Drill press attachment assembly

Claim 2

A machine having a supporting beam with a substantially constant cross-section along an axis of extension, and also having a plurality of members slidably mounted on said beam for relative axial movement along said beam, wherein the improvement is a system for maintaining the relative angular position of said members about said axis comprising: a bar normally carried by one of said members in a position parallel to said axis, at least one other of said members having means slideably engageable with said bar in closelyfitting relationship therewith to prevent angular misalignment between said members; and means normally securing one of said members to said beam against angular displacement about said axis.

Claim 3

A machine as defined in claim 1, wherein one of said members is a lathe headstock, and another of said members is a carriage operable in conjunction with said headstock.

Claim 4

A machine as defined in claim 2, wherein said headstock and carriage are normally interconnected by a feed screw.

Claim 5

A machine as defined in claim 1, wherein said bar is normally fixed with respect to a member slideably mounted on said beam, said bar being slideably received in a member normally fixed with respect to said beam.

Claim 6

A machine as defined in claim 1, wherein said beam is circular in outside cross-section.

Claim 7

A machine as defined in claim 1, wherein said beam is the column of a drill press.

Claim 8

A machine as defined in claim 1, wherein said members slideably engaging said bar include means adapted to apply a predetermined degree of clamping action on said bar.

Claim 9

A machine as defined in claim 7, wherein said members moveable on said beam include means adapted to apply a predetermined degree of clamping action on said beam.

Claim 10

A machine as defined in claim 1, wherein said bar engages at least two members fixed with respect to said beam.

Claim 11

A machine as defined in claim 9, wherein at least one of said members moveable with respect to said beam is interposed between said members fixed with respect to said beam.

Claim 12

A machine as defined in claim 10, wherein said bar is normally fixed with respect to said interposed moveable member.

Claim 13

A machine as defined in claim 1, wherein a feed screw interconnects two members moveable relatively along said beam.

Claim 14

A machine as defined in claim 1, wherein said bar is rectangular in cross-section, said cross-section having a greater dimension in a direction tangential to the axis of said beam than in a direction radial thereto.

Claim 15

A machine as defined in claim 13, wherein a feed screw interconnects two relatively moveable members on said beam, said feed screw being laterally disposed with respect to said beam in a direction parallel to said greater dimension.

Claim 16

A machine as defined in claim 14, wherein said bar is received in outwardly-open recesses in said members.

Claim 17

In combination with a beam structure including a principal section and a section extending transversely thereto from a junction of said sections, an assembly of machine components cOmprising: a headstock unit received on said principal section and normally fixed with respect thereto; a carriage unit slideably mounted on said principal section; and an alignment bar normally carried by one of said units in a position parallel to said principal section, the other of said units having means slidably engagable with said bar in closely-fitting relationship therewith to prevent angular misalignment between said units; and means normally securing one of said units to said principal section against angular displacement there-about.

Claim 18

In combination with a beam structure including a principal section and a section extending transversely thereto from a junction of said sections, an assembly of machine components cOmprising: a headstock unit received on said principal section and normally fixed with respect thereto; a carriage unit slideably mounted on said principal section; and an alignment bar normally carried by one of said units in a position parallel to said principal section, the other of said units having means slidably engagable with said bar in closely-fitting relationship therewith to prevent angular misalignment between said units; and means normally securing one of said units to said principal section against angular displacement there-about.

Claim 19

A combination as defined in claim 16, wherein said bar is fixed with respect to said carriage unit, and has clearance with respect to said beam structure at said junction.

Claim 20

A combination as defined in claim 17, wherein said principal and transversely-extending sections are normally horizontal, and said transversely extending section extends to the rear with respect to said carriage unit.

Claim 21

A combination as defined in claim 16, wherein said headstock has a portion reaching over the junction of said beam structure at said junction, said headstock portion supporting a driving pulley in a position on the opposite side of said transversely-extending section from said carriage unit.