Apparatus for forming one piece metallic can bodies

Claim 2

In metal forming apparatus of the type having a main frame mounting a longitudinally reciprocal ram driven by a rotating crankshaft and movable in forward and rearward strokes with forward and rearward reversals between said strokes, said ram being adapted for having a metal part positioned to be engaged thereby during a rearward portion and said rearward reversal of said ram strokes and for engaging and forming said metal part during a more forward portion of said strokes; the improvements comprising: drive transfer means including a plurality of pivot arms connected one to another between and to said crankshaft and ram for transferring said crankshaft rotations into said ram reciprocal forward and rearward strokes and into a reduced comparative speed of ram reciprocal movement and movement reversal directly approaching and following said ram stroke rearward reversal than directly approaching and following said ram stroke forward reversal, said pivot arm connection in said drive transfer means reciprocally driving said ram in a particular changing speed pattern of movement from said ram stroke rearward reversal forwardly to said ram stroke forward reversal and in an exactly reverse changing speed pattern of movement from said ram stroke forward reversal rearwardly to saiD ram stroke rearward reversal.

Claim 3

Metal forming apparatus as defined in claim 1 in which said drive transfer means includes said plurality of pivot arms being connected forming a longer effective driving pivot arm extension between said crankshaft and ram directly approaching and following said ram stroke forward reversal then directly approaching and following said ram stroke rearward reversal providing a reduced comparative speed of ram reciprocal movement and movement reversal directly approaching and following said ram stroke rearward reversal than directly approaching and following said ram stroke forward reversal.

Claim 4

Metal forming apparatus as defined in claim 1 in which said pivot arms of said drive transfer means include a crank arm secured to and extending radially from said crankshaft, a transfer arm having a rearward end pivotly connected to an outer end of said crank arm and a forward end extending at all times forwardly of said crank arm, means pivotly connecting said transfer arm forward end to said ram.

Claim 5

Metal forming apparatus as defined in claim 1 in which said pivot arms of said drive transfer means include a crank arm secured to said crankshaft and extending radially therefrom, a transfer arm pivotly connected to an outer end of said crank arm and having a forward end at all times spaced forwardly of said crank arm, a drive arm having a lower end pivotly secured to said main frame, said transfer arm forward end being pivotly connected to said drive arm intermediate upward extension of said drive arm, means pivotly connecting an upper portion of said drive arm to said ram, said drive arm upper portion being spaced above said drive arm pivotal connection to said transfer arm forward end.

Claim 6

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage and is movable generally horizontally in said forward and rearward strokes by forward and rearward movements of said ram carriage; and in which hydrostatic-type pressurized oil film bearing assemblies include ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, one of said ram carriage and main frame oil bearing parts including slides having surfaces thereon parallel to said ram movements, and the other of said ram carriage and main frame oil bearing parts including spaced pads having flat surfaces thereon parallel to said ram movements, said pads being positioned with said pad surfaces at all times at least partially generally vertically facing and adjacent said slide surfaces, pressurized oil inlets opening through each of said pad surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlet over and between said pad and slide facing surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements, at least certain of said ram oil bearing parts being positioned exerting vertical force components through said oil films acting generally vertically downwardly against opposed upward force components of facing of said main frame oil bearing parts providing support at least by vertical force components of said ram horizontally movable on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting saiD ram carriage on said main frame during said horizontally reciprocal movement.

Claim 7

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage and is generally horizontally reciprocal on said main frame movable in said forward and rearward strokes by forward and rearward strokes of said ram carriage; and in which hydrostatic-type pressurized oil film bearing assemblies include ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, one of said ram carriage and main frame oil bearing parts including slides having at least partially generally upwardly and downwardly facing surfaces thereon parallel to said ram movements, the other of said ram carriage and main frame oil bearing parts including generally horizontally spaced sets of generally vertically spaced pads with said pads having flat surfaces thereon parallel to said ram movements, said vertically spaced pads of each set being positioned with said surfaces of one pad adjacent and generally downwardly facing said slide upwardly facing surfaces and said surfaces of the other pad generally upwardly facing said slide downwardly facing surfaces, pressurized oil inlets opening through each of said pad horizontal surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlet over and between said pad and slide facing surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage by at least both vertically upward and downward force components during said ram and ram carriage reciprocal movements to thereby support said ram horizontally movable on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 8

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage and is generally horizontally reciprocal on said main frame movable in said forward and rearward strokes by forward and rearward strokes of said ram carriage; and in which hydrostatic-type pressurized oil film bearing assemblies include ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, said main frame oil bearing parts including slides having generally upwardly and downwardly facing surfaces thereon parallel to said ram movements, said ram carriage oil bearing parts including sets of generally vertically spaced pads generally transversely horizontally spaced at opposite sides of a longitudinal axis of said ram, each of said pads having a flat surface thereon parallel to said ram movements, one of said pads of each of said vertically spaced sets being positioned with one pad surface generally downwardly facing said slide upwardly facing surfaces and the other pad surfaces generally facing said slide downwardly facing surfaces with a slide spaced generally vertically therebetween, pressurized oil inlets opening through each of said pad surfaces and connected to pressurized oil supply means distributing constantly flowing anD pressurized, thickened oil films through said inlet over and between said pad and slide facing surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage by at least both vertically upward and downward force components during said ram and ram carriage reciprocal movements to thereby support said ram horizontally movable on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil film thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 9

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage and is movable generally horizontally in said forward and rearward strokes by forward and rearward strokes of said ram carriage; in which hydrostatic-type pressurized oil film bearing assemblies include ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, one of said ram carriage and main frame oil bearing parts including slides having surfaces thereon parallel to said ram movements, the other of said ram carriage and main frame oil bearing parts including spaced pads having flat surfaces thereon parallel to said ram movements, said pads being positioned with said pad surfaces at all times facing and adjacent said slide surfaces, pressurized oil inlets opening through each of said pad horizontal surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized thickened oil films through said inlet over and between said pad and slide facing surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements, said ram carriage oil bearing parts being positioned and through said pressure oil films producing vertical and transversely opposite horizontal force components acting generally vertically downwardly horizontally transversely opposite against correspondingly facing and oppositively acting of opposed vertical and transversely opposite horizontal force components of said main frame oil bearing parts providing support at least by vertical forces and opposed transverse forces of said ram carriage horizontally movable on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 10

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage and is generally horizontally reciprocal on said main frame movable in said forward and rearward strokes by forward and rearward strokes of said ram carriage; in which hydrostatic-type pressurized oil film bearing assemblies include ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, said main frame oil bearing parts including slides having upwardly and downwardly facing generally horizontal surfaces thereon and oppositely transversely facing generally vertical surfaces thereon all parallel to said ram movements, said ram carriage oil bearing parts including sets of vertically spaced pads transversely horizontally spaced at opposite sides of a longitudinal axis of said ram, each of said pads having a generally horizontal flat surface thereon parallel to said ram movements, one of said pads of each of said vertically spaced sets being positioned with one pad horizontal surfaces downwardly facing said slide upwardly facing horizontal surfaces and the other pad horizontal surfaces upwardly facing said slide downwardly facing horizontal surfaces with a slide spaced vertically therebetween, pressurized oil inlets opening through each of said pad horizontal surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlet over and between said pad and slide facing horizontal surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage by both vertically upward and downward forces during said ram and ram carriage reciprocal movements to thereby support said ram horizontally movable on said main frame; in which said ram carriage oil bearing parts include at least one set of pads having generally vertical flat surfaces thereon parallel to said ram movements and in the same general longitudinal location of said vertically spaced pads, each of said vertical surface pads being positioned with one pad vertical surfaces transversely facing a corresponding of said slide vertical surfaces, pressurized oil inlets opening through each of said pad vertical surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlet over and between said pad and slide facing vertical surfaces maintaining said pad surfaces spaced transversely from said slide surfaces and pressure oil film supporting said ram carriage transversely during said ram reciprocal movements and in which each of said ram carriage pads is comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 11

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage projecting generally horizontally forwardly therefrom and is generally horizontally reciprocal on said main frame in said forward and rearward strokes by forward and rearward generally horizontal movements of said ram carriage; in which hydrostatic-type pressurized oil film bearing assemblies including ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, one of said ram carriage and main frame oil bearing parts including slides having surfaces thereon parallel to said ram movements, the other of said ram carriage and main frame oil bearing parts including spaced pads having flat surfaces thereon parallel to said ram movements, said pads being positioned with said pad surfaces at all times at least partially generally vertically facing and adjacent to said slide surfaces, pressurized oil inlets opening through each of said Pad surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlets over and between said pad and slide surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements, at least certain of said ram carriage bearing parts being positioned exerting vertical force components through said oil films acting generally vertically downwardly against opposed upward force components of facing of said main frame oil bearing parts providing support at least by vertical force components of said ram carriage on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame; and in which a hydrostatic-type pressure oil film bearing sleeve is secured stationary on said main frame at all times spaced forwardly of said ram carriage and telescoping part of said ram during said reciprocal movements of said ram, said bearing sleeve having a plurality of pressurized oil inlets opening through an inner surface of said sleeve against a peripheral surface of said ram spaced about said ram peripheral surface, pressurized oil supply means connected to said bearing sleeve oil inlets distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said sleeve inner surface and said ram peripheral surface maintaining said sleeve and ram surfaces spaced apart by said constantly flowing and pressurized oil film for pressure oil film supporting said ram part during said ram reciprocal movements so that the combination of said ram carriage and said bearing sleeve in spaced relationship support said ram in such movements.

Claim 12

Metal forming apparatus as defined in claim 1 in which said ram is mounted on a ram carriage projecting generally horizontally forwardly therefrom and is generally horizontally reciprocal on said main frame in said forward and rearward strokes by forward and rearward generally horizontal strokes of said ram carriage; in which hydrostatic-type pressurized oil film bearing assemblies including ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame, one of said ram carriage and main frame oil bearing parts including slides having generally horizontal surfaces and transversely spaced generally vertical surfaces thereon parallel to said ram movements, the other of said ram carriage and main frame oil bearing parts including spaced horizontal pads having generally horizontal flat surfaces thereon and transversely spaced vertical pads having generally vertical flat surfaces thereon parallel to said ram movements, said horizontal pads being positioned with said pad horizontal surfaces at all times generally vertically facing and adjacent said slide horizontal surfaces, said vertical pads being positioned with said pad vertical surfaces at all times generally vertically facing and adjacent corresponding of said slide vertical surfaces, pressurized oil inlets openings through each of said horizontal and vertical pad horizontal and vertical surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlets over and between said pad and slide horizontal and vertical surfaces maintaining sAid pad surfaces spaced from slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements, at least certain of said ram carriage oil bearing parts being positioned acting generally vertically downwardly against correspondingly facing and upwardly acting of said main frame oil bearing parts through said facing horizontal surfaces and said pressurized oil film therebetween providing said horizontal support of said ram carriage on said main frame, said ram carriage and main frame oil bearing parts having said facing vertical surfaces acting generally horizontally between said ram carriage and main frame with said pressurized oil film therebetween providing transverse support of said ram carriage on said main frame, each of said pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surfaces area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontal reciprocal movement; and in which a hydrostatic-type pressure oil film bearing sleeve is secured stationary on said main frame at all times spaced forwardly of said ram carriage and telescoping parts of said ram during said reciprocal movements of said ram, said bearing sleeve having a plurality of pressurized oil inlets opening through an inner surface of said sleeve against a peripheral surface of said ram spaced about said ram peripheral surface, pressurized oil supply means connected to said bearing sleeve oil inlets distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said sleeve inner surface and said ram peripheral surface maintaining said sleeve and ram surfaces spaced apart by said constantly flowing and pressurized oil film for pressure oil film supporting said ram parts during said ram reciprocal movement so that the combination of said ram carriage and said bearing sleeve in spaced relationship support said ram in such movements.

Claim 13

In metal forming apparatus of the type having a main frame mounting a longitudinally reciprocal ram on a ram carriage both movable in generally horizontal forward and rearward strokes with forward and rearward reversals between said strokes, said ram being adapted for having a metal part positioned to be engaged thereby and formed at least during a part of said forward stroke; the improvements comprising: hydrostatic-type pressurized oil film bearing assemblies including ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame; one of said ram carriage and main frame oil bearing parts including slides having surfaces thereon parallel to said ram movements; the other of said ram carriage and main frame oil bearing parts including spaced pads having flat surfaces thereon parallel to said ram movements, said pads being positioned with said pad surfaces at all times at least partially generally vertically facing and adjacent said slide surfaces, pressurized oil inlets opening through each of said pad surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlets over and between said pad and slide surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements; at least certain of said ram carriage oil bearing parts being positioned exerting vertical force components through said oil films acting generally vertically downwardly against upward force components of facing of said main frame oil bearing parts providing at least by vertical force components horizontal support of said ram carriage movable on said main frame; and each of said spaced pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 14

In metal forming apparatus of the type having a main frame mounting a longitudinally reciprocal ram on a ram carriage both movable in generally horizontal forward and rearward strokes with forward and rearward reversals between said strokes, said ram being adapted for having a metal part positioned to be engaged thereby and formed at least during a part of said forward stroke; the improvements comprising: hydrostatic-type pressurized oil film bearing assemblies including ram carriage and main frame oil bearing parts supporting said ram carriage on said main frame during said ram and ram carriage generally horizontal reciprocal movements, said ram carriage oil bearing parts being secured movable with said ram carriage and moving relative to said main frame oil bearing parts secured stationary on said main frame; one of said ram carriage and main frame oil bearing parts including slides having surfaces thereon parallel to said ram movements; the other of said ram carriage and main frame oil bearing parts including spaced pads having flat surfaces thereon parallel to said ram movements, said pads being positioned with said pad surfaces at all times at least partially generally vertically facing and adjacent said slide surfaces, pressurized oil inlets opening through each of said pad surfaces and connected to pressurized oil supply means distributing constantly flowing and pressurized, thickened oil films through said inlets over and between said pad and slide surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage during said ram and ram carriage reciprocal movements; at least certain of said ram carriage oil bearing parts being positioned exerting vertical force components through said oil films acting generally vertically downwardly against upward force components of facing of said main frame oil bearing parts providing at least by vertical force components horizontal support of said ram carriage movable on said main frame; and each of said spaced pads being comprised of a raised flat surface area constituting said pad surface horizontally isolated from all surrounding surfaces, said each pad surface surrounding and terminating inwardly in an oil inlet area having said oil inlet, the total of said pad surface area being greater than said oil inlet area for each pad, said isolated pad surfaces with said pressurized oil films thereon against said slides supporting said ram carriage on said main frame during said horizontally reciprocal movement.

Claim 15

Metal forming apparatus as defined in claim 12 in which said one of said ram carriage and main frame oil bearing parts include said slides having a least partially generally upwardly and downwardly facing surfaces thereon parallel to said ram movements; and in which said other of said ram carriage and main frame oil bearing parts include horizontally spaced sets of vertically spaced pads, each of said sets of vertically spaced pads having one of said pad flat surfaces facing at least partially generally upwardly and the other of said pad flat surfaces facing at least partially generally downwardly corresponding to said slide surfaces at all times facing said corresponding of said slide surfaces.

Claim 16

Metal forming apparatus as defined in claim 12 in which said other of said ram carriage and main frame oil bearing parts include at least certain of said pads being transversely spaced sets of longitudinally spaced pads and forming at least a part of said at least certain ram carriage oil bearing parts and said corresponding main frame oil bearing parts.

Claim 17

Metal forming apparatus as defined in claim 12 in which said one of said ram carriage and main frame oil bearing parts include said slides having at least partially generally upwardly facing surfaces and at least partially generally downwardly facing surfaces thereon parallel to said ram movements; and in which said other of said ram carriage and main frame oil bearing parts include at least partially generally upwardly and downwardly acting pads at spaced longitudinal locations and at spaced transverse locations all acting against corresponding upwardly and downwardly facing oil bearing part slide surfaces providing through said facing surfaces and said pressurized oil film therebetween upward and downward horizontal force component support of said ram carriage in said longitudinal reciprocal movements of said ram and ram carriage on said main frame.

Claim 18

Metal forming apparatus as defined in claim 12 in which said one of said ram carriage and main frame oil bearing parts include said slides having at least partially generally transversely facing surfaces thereon facing transversely opposite and extending parallel to said ram movements; and in which said other of said ram carriage and main frame oil bearing parts include said pads having generally horizontally spaced corresponding at least partially transversely facing surfaces thereon parallel to said ram movements and facing said surfaces on said oil bearing part slides, said pressurized oil inlets opening through each of said pad surfaces and connected to pressurized oil supply means distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said pad and slide surfaces maintaining said pad surfaces spaced from said slide surfaces and providing force components also transversely pressure oil film supporting said ram carriage during said ram and ram carriage longitudinal reciprocal movements.

Claim 19

Metal forming apparatus as defined in claim 12 in which said one of said ram carriage and main frame oil bearing parts include slides having upwardly and downwardly facing generally horizontal surfaces thereon and generally veRtical surfaces thereon facing transversely oppositely, all of said horizontal and vertical surfaces extending parallel to said ram movements; in which said other of said ram carriage and main frame oil bearing parts include horizontally spaced sets of vertically spaced pads, each of said sets of vertically spaced pads having one of said pad horizontal surfaces facing upwardly and the other of said pad horizontal surfaces facing downwardly at all times generally facing corresponding of said slide horizontal surfaces, said pressurized oil inlets opening through each of said pad horizontal surfaces distributing said constantly flowing and pressurized, thickened oil films over and between said pad and slide horizontal surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage both upwardly and downwardly during said ram and ram carriage longitudinal reciprocal movements; and in which said other of said ram carriage and main frame oil bearing parts include pads having generally horizontally spaced vertical surfaces thereon parallel to said ram movements and facing corresponding of said vertical surfaces on said oil bearing part slides, pressurized oil inlets opening through each of said pad vertical surfaces and connected to pressurized oil supply means distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said pad and slide vertical surfaces maintaining said pad surfaces spaced transversely from said slide surfaces and transversely pressure oil film supporting said ram carriage during said ram and ram carriage longitudinal reciprocal movements.

Claim 20

Metal forming apparatus as defined in claim 12 in which said one of said ram carriage and main frame oil bearing parts include said slides having upwardly facing generally horizontal surfaces and downwardly facing generally horizontal surfaces thereon and generally vertical surfaces thereon facing transversely oppositely, all of said horizontal and vertical surfaces extending parallel to said ram movements; in which said other of said ram carriage and main frame oil bearing parts include upwardly and downwardly acting pads at spaced longitudinal locations and at spaced transverse locations all acting against corresponding upwardly and downwardly facing oil bearing part slide surfaces providing through said facing horizontal surfaces and said pressurized oil film therebetween upward and downward horizontal support of said ram carriage in said longitudinal reciprocal movements on said main frame; and in which said other of said ram carriage and main frame oil bearing parts include longitudinally spaced sets of pads each having vertical surfaces thereon parallel to said ram movement, said pad vertical surfaces of each set facing transversely oppositely and facing corresponding of said vertical surfaces on said oil bearing part slides, pressurized oil inlets opening through each of said pad vertical surfaces and connected to pressurized oil supply means distributing a constantly flowing and pressurized, thickened oil film through said inlet over and between said pad and slide vertical surfaces maintaining said pad surfaces spaced transversely from said slide surfaces and transversely pressure oil film supporting said ram carriage during said ram and ram carriage longitudinal reciprocal movements.

Claim 21

Metal forming apparatus as defined in claim 12 in which said ram projects forwardly from said ram carriage; and in which a hydrostatic-type pressurized oil film bearing sleeve is secured stationary on said main frame at all times spaced forwardly of said ram carriage and telescoping parts of said ram during said reciprocal movements of said ram and ram carriage, said bearing sleeve having a plurality of pressurized oil inlets opening through an inner surface of said sleeve against a peripheral surface of said ram spaced about said ram peripheral surface, pressurized oil supply means connected to said bearing sleeve oil inLets distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said sleeve inner surface and said ram peripheral surface maintaining said sleeve and ram surfaces spaced apart by said constantly flowing and pressurized oil film for pressure oil film supporting said ram parts during said ram and ram carriage reciprocal movements so that the combination of said ram carriage and said bearing sleeve in spaced relationship support said ram in such movements.

Claim 22

Metal forming apparatus as defined in claim 12 in which said ram projects forwardly from said ram carriage; in which said one of said ram carriage and main frame oil bearing parts include slides having upwardly and downwardly facing generally horizontal surfaces thereon and generally vertical surfaces thereon facing transversely oppositely, all of said horizontal and vertical surfaces extending parallel to said ram movements; in which said other of said ram carriage and main frame oil bearing parts include horizontally spaced sets of vertically spaced pads, each of said sets of vertically spaced pads having one of said pad horizontal surfaces facing upwardly and the other of said pad horizontal surfaces facing downwardly at all times generally facing corresponding of said slide horizontal surfaces, said pressurized oil inlets opening through each of said pad horizontal surfaces distributing said constantly flowing and pressurized, thickened oil films over and between said pad and slide horizontal surfaces maintaining said pad surfaces spaced from said slide surfaces and pressure oil film supporting said ram carriage both upwardly and downwardly during said ram and ram carriage longitudinal reciprocal movements; in which said other of said ram carriage and main frame oil bearing parts include pads having generally horizontally spaced vertical surfaces thereon parallel to said ram movements and facing corresponding of said vertical surfaces on said oil bearing part slides, pressurized oil inlets opening through each of said pad vertical surfaces and connected to pressurized oil supply means distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said pad and slide vertical surfaces maintaining said pad surfaces spaced transversely from said slide surfaces and transversely pressure oil film supporting said ram carriage during said ram and ram carriage longitudinal reciprocal movements; in which all of said pads of said other of said ram carriage and main frame oil bearing parts are similarly formed and isolated; and in which a hydrostatic-type pressurized oil film bearing sleeve is secured stationary on said main frame at all times spaced forwardly of said ram carriage and telescoping parts of said ram during said reciprocal movements of said ram and ram carriage, said bearing sleeve having a plurality of pressurized oil inlets opening through an inner surface of said sleeve against a peripheral surface of said ram spaced about said ram spaced about said ram peripheral surface, pressurized oil supply means connected to said bearing sleeve oil inlets distributing a constantly flowing and pressurized, thickened oil film through said inlets over and between said sleeve inner surface and said ram peripheral surface maintaining said sleeve and ram surfaces spaced apart by said constantly flowing and pressurized oil film for pressure oil film supporting said ram parts during said ram and ram carriage reciprocal movements so that the combination of said ram carriage and said bearing sleeve in spaced relationship support said ram in such movements.