US3636865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print head for high-speed printers
Assignee: Data Printer Corp
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Filing: 1969-05-08
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Granted: 1972-01-25
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Expires: 1989-05-08
Abstract
Abstract A print head in which a bank of hammers is disposed over a bank of actuators, comprising inner and outer actuator elements of complementary construction. The apparatus is constructed by successively pinning stamped plates to a base frame, one on top of the next. Alignment of the parts is accomplished by a series of dowels so that in general only one positioning step is required to align each part that is secured to the frame.
Inventors
- 👤 Joseph Konkel
- 👤 Frank H Schaller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:13
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/10; B41J9/127
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
492 words
In a print head for high-speed printers, a relatively massive base frame adapted to be secured to the side frames of a printer adjacent the type carrier thereof, an actuator-mounting plate secured to said base frame, said plate and said frame being provided with a set of three confronting apertures each extending along a central axis parallel to a line that will coincide with the line of print where said frame is installed between the side frames of a printer, said set of apertures comprising two outer apertures and an inner aperture located between said outer apertures, a set of four alignment combs mounted in pairs on said mounting plate on either side of said outer apertures, each pair having confronting teeth projecting normal to said line, a stop bar mounted on said plate adjacent each alignment comb and having an edge parallel to said line, a set of print hammer actuators mounted on said plate and each located between and engaging a different pair of teeth of one of said combs and engaging said edge of one of said stop bars, said actuators being thereby located in directions parallel to said line by said combs and in directions normal to said line by said stop bars, said actuators having movable arms projecting over said central aperture beyond a normal from said plate to said line in position to drive hammers toward said line, a screw plate mounted on said actuator mounting plate over said central aperture, a pair of guide combs, one mounted on each side of said screw plate and each having teeth projecting up between the actuator arms extending from actuators on that side of the mounting plate, a pair of stop combs, one mounted on each side of said screw plate and each having teeth each projecting under a different one of the actuator arms on that side of the mounting plate, a resilient stop pad mounted on each tooth of each stop comb in position to engage one of said actuator arms, a set of screws threaded in said screw plate and each extending into contact with a different one of said stop comb teeth to adjust the position of the stop pad thereon relative to the associated actuator arm, a pair of supports mounted on said actuator mounting plate, a hammer support bar having ends connected to said supports and extending therebetween over said actuators along a longitudinal axis parallel to said line, a channel beam having a central web connected to said bar and extending above and below it in directions normal to said line, said beam having parallel flanges extending away from said hammer support bar, upper and lower hammer support springs mounted on said flanges and extending over and projecting from said hammer support bar, and print hammers each connected between a different pair of superposed upper and lower springs and adapted to be engaged by a different one of said actuator arms.
Claim 2
Dependent Claim
492 words
In a print head for high-speed printers, a relatively massive base frame adapted to be secured to the side frames of a printer adjacent the type carrier thereof, an actuator-mounting plate secured to said base frame, said plate and said frame being provided with a set of three confronting apertures each extending along a central axis parallel to a line that will coincide with the line of print where said frame is installed between the side frames of a printer, said set of apertures comprising two outer apertures and an inner aperture located between said outer apertures, a set of four alignment combs mounted in pairs on said mounting plate on either side of said outer apertures, each pair having confronting teeth projecting normal to said line, a stop bar mounted on said plate adjacent each alignment comb and having an edge parallel to said line, a set of print hammer actuators mounted on said plate and each located between and engaging a different pair of teeth of one of said combs and engaging said edge of one of said stop bars, said actuators being thereby located in directions parallel to said line by said combs and in directions normal to said line by said stop bars, said actuators having movable arms projecting over said central aperture beyond a normal from said plate to said line in position to drive hammers toward said line, a screw plate mounted on said actuator mounting plate over said central aperture, a pair of guide combs, one mounted on each side of said screw plate and each having teeth projecting up between the actuator arms extending from actuators on that side of the mounting plate, a pair of stop combs, one mounted on each side of said screw plate and each having teeth each projecting under a different one of the actuator arms on that side of the mounting plate, a resilient stop pad mounted on each tooth of each stop comb in position to engage one of said actuator arms, a set of screws threaded in said screw plate and each extending into contact with a different one of said stop comb teeth to adjust the position of the stop pad thereon relative to the associated actuator arm, a pair of supports mounted on said actuator mounting plate, a hammer support bar having ends connected to said supports and extending therebetween over said actuators along a longitudinal axis parallel to said line, a channel beam having a central web connected to said bar and extending above and below it in directions normal to said line, said beam having parallel flanges extending away from said hammer support bar, upper and lower hammer support springs mounted on said flanges and extending over and projecting from said hammer support bar, and print hammers each connected between a different pair of superposed upper and lower springs and adapted to be engaged by a different one of said actuator arms.
Claim 3
Dependent Claim
280 words
In a print head for high-speed printers of the line at a time type having a type carrier adapted to move past a line of print, a print hammer assembly comprising: an integral support member extending parallel to and at least coextensive with the line of print, a first set of independent hammer support springs having first ends connected to a first side of said member and having second ends projecting over it with clearance, a second set of independent hammer support springs having first ends connected to a second side of said member opposite said first side and having second ends projecting over it with clearance, the projecting end of each spring of said first set being opposite the projecting end of a different spring of said second set, directly adjacent print hammers each connected between a different opposed pair of springs of said first and second sets and adapted to produce a continuous line of image forming impacts, in which said springs comprise adjacent pairs formed on confronting sides adjacent their first ends with confronting openings adapted to receive a fastener, and fastening means for each adjacent pair of springs, said fastening means comprising gib means overlying said first ends of said springs and formed with a recess to receive a portion of a fastener protruding through the recess formed by the confronting openings of said springs, a fastener having a portion protruding through the openings formed in said gib means and by said confronting openings, said fastener having an enlarged portion overlying said gib means, and means for securing said fastener to said support to clamp said springs to said support by pressure on said gib means.
Claim 4
Dependent Claim
280 words
In a print head for high-speed printers of the line at a time type having a type carrier adapted to move past a line of print, a print hammer assembly comprising: an integral support member extending parallel to and at least coextensive with the line of print, a first set of independent hammer support springs having first ends connected to a first side of said member and having second ends projecting over it with clearance, a second set of independent hammer support springs having first ends connected to a second side of said member opposite said first side and having second ends projecting over it with clearance, the projecting end of each spring of said first set being opposite the projecting end of a different spring of said second set, directly adjacent print hammers each connected between a different opposed pair of springs of said first and second sets and adapted to produce a continuous line of image forming impacts, in which said springs comprise adjacent pairs formed on confronting sides adjacent their first ends with confronting openings adapted to receive a fastener, and fastening means for each adjacent pair of springs, said fastening means comprising gib means overlying said first ends of said springs and formed with a recess to receive a portion of a fastener protruding through the recess formed by the confronting openings of said springs, a fastener having a portion protruding through the openings formed in said gib means and by said confronting openings, said fastener having an enlarged portion overlying said gib means, and means for securing said fastener to said support to clamp said springs to said support by pressure on said gib means.
Claim 5
Dependent Claim
239 words
In a print hammer assembly for high-speed printers, the combination comprising: a support having spaced parallel elongated flanges and means connecting said flanges together, a first set of adjacent pairs of independent elongated parallel leaf springs having first ends projecting from a first of said flanges and second ends connected to said first flange, said springs extending normal to the direction of elongation of said flanges and equally spaced each from the next, a second set of pairs of adjacent elongated parallel leaf springs having first ends projecting from the second of said flanges and second ends connected to said second flange, the springs of said second set extending normal to the direction of elongation of said flanges parallel to the springs of said first set, the springs connected To each of said parallel flanges comprising adjacent pairs each formed with confronting recesses forming an opening, a corresponding aperture formed in said support and underlying said opening, gib means overlying said second ends of each of said adjacent pairs and formed with an aperture overlying said aperture and said opening, a fastener for each of said adjacent pairs having a portion protruding through said aperture in said gib means and said support and through said opening, said fastener clamping said gib means, said springs and said support together, and juxtaposed print hammers each connected to said first ends of different pairs of springs each comprising one from each set.
Claim 6
Dependent Claim
239 words
In a print hammer assembly for high-speed printers, the combination comprising: a support having spaced parallel elongated flanges and means connecting said flanges together, a first set of adjacent pairs of independent elongated parallel leaf springs having first ends projecting from a first of said flanges and second ends connected to said first flange, said springs extending normal to the direction of elongation of said flanges and equally spaced each from the next, a second set of pairs of adjacent elongated parallel leaf springs having first ends projecting from the second of said flanges and second ends connected to said second flange, the springs of said second set extending normal to the direction of elongation of said flanges parallel to the springs of said first set, the springs connected To each of said parallel flanges comprising adjacent pairs each formed with confronting recesses forming an opening, a corresponding aperture formed in said support and underlying said opening, gib means overlying said second ends of each of said adjacent pairs and formed with an aperture overlying said aperture and said opening, a fastener for each of said adjacent pairs having a portion protruding through said aperture in said gib means and said support and through said opening, said fastener clamping said gib means, said springs and said support together, and juxtaposed print hammers each connected to said first ends of different pairs of springs each comprising one from each set.
Claim 7
Dependent Claim
183 words
A print hammer assembly for a high-speed printer, comprising: a bank of adjacent print hammers arranged in a parallel array, an elongated support extending along said array, and a pair of independent springs for each hammer, each pair comprising one spring having a first end overlying one side of said support and one spring having a first end overlying the other side of said support, both extending normal to said support to second ends, and both connected to the associated hammer at said second ends, in which the springs of said pairs on each side of said support are arranged in adjacent pairs, each pair being formed at their first ends with confronting recesses to receive a single fastener, gib means overlying said first ends and formed with an aperture, a single fastening means for each pair comprising a screw having a head engaging said gib means and a shank protruding through said aperture and said recesses, and means for detachably securing said shank to said support to cause said gib means to clamp said springs to said support in independently detachable pairs.
Claim 8
Dependent Claim
183 words
A print hammer assembly for a high-speed printer, comprising: a bank of adjacent print hammers arranged in a parallel array, an elongated support extending along said array, and a pair of independent springs for each hammer, each pair comprising one spring having a first end overlying one side of said support and one spring having a first end overlying the other side of said support, both extending normal to said support to second ends, and both connected to the associated hammer at said second ends, in which the springs of said pairs on each side of said support are arranged in adjacent pairs, each pair being formed at their first ends with confronting recesses to receive a single fastener, gib means overlying said first ends and formed with an aperture, a single fastening means for each pair comprising a screw having a head engaging said gib means and a shank protruding through said aperture and said recesses, and means for detachably securing said shank to said support to cause said gib means to clamp said springs to said support in independently detachable pairs.
Claim 9
Dependent Claim
249 words
A print hammer assembly, comprising: a support extending along a predetermined axis, a first parallel array of leaf springs each having a first end overlying a first side of said support and a second end projecting from said support normal to said axis, a second parallel array of leaf springs each having a first end overlying a second side of said support spaced from said first side and a second end projecting from said support normal to said axis, the springs of said second array being parallel to the springs of said first array, and each aligned with a different spring of said first array in a different line normal both to said axis and to the direction of extension of said springs, each of said arrays of leaf springs comprising adjacent pairs formed with confronting recesses adjacent said first ends thereof and overlying said support, gib means overlying said first ends of each of said adjacent pairs and formed with an opening aligned with the region between said recesses, and fastening means for each of said adjacent pairs comprising means for clamping said springs to said support by way of said gib means and comprising a portion protruding through said opening, between said recesses, and through a corresponding opening in said support, and a print hammer connected between each aligned pair of springs for restrained movement generally normal to said axis, said hammers being spaced on centers equal to the centers on a complete line to be printed.
Claim 10
Dependent Claim
249 words
A print hammer assembly, comprising: a support extending along a predetermined axis, a first parallel array of leaf springs each having a first end overlying a first side of said support and a second end projecting from said support normal to said axis, a second parallel array of leaf springs each having a first end overlying a second side of said support spaced from said first side and a second end projecting from said support normal to said axis, the springs of said second array being parallel to the springs of said first array, and each aligned with a different spring of said first array in a different line normal both to said axis and to the direction of extension of said springs, each of said arrays of leaf springs comprising adjacent pairs formed with confronting recesses adjacent said first ends thereof and overlying said support, gib means overlying said first ends of each of said adjacent pairs and formed with an opening aligned with the region between said recesses, and fastening means for each of said adjacent pairs comprising means for clamping said springs to said support by way of said gib means and comprising a portion protruding through said opening, between said recesses, and through a corresponding opening in said support, and a print hammer connected between each aligned pair of springs for restrained movement generally normal to said axis, said hammers being spaced on centers equal to the centers on a complete line to be printed.
Claim 11
Dependent Claim
298 words
In combination, a support plate, a pair of uprights mounted on said support plate in spaced relation, a support bar connected between said uprights and extending parallel to said plate along a first axis, a channel member having a central web wider than said support bar and connected to said bar and having a parallel flanges extending normal to said web and away from said bar, a first set of independent parallel leaf springs extending normal to said bar and having first ends overlying one of said flanges and projecting over and beyond said bar to second ends, a second set of independent parallel leaf springs extending normal to said bar and having first ends overlying the other of said flanges and proJecting over and beyond said bar to second ends, each spring of said first set overlying and opposite a different spring of said second set, in which said springs of each set comprise adjacent pairs, each pair being formed at their first ends with confronting recesses to receive a single fastener, gib means for each pair overlying said first ends of said pair and said flange and formed with an aperture, and detachable fastening means for clamping said gib means to said support and comprising means engaging said gib means and means extending through said aperture and said recesses to fix said springs to said support, whereby each of said pairs is independently and detachably mounted to the corresponding flange, and elongated print hammers closely spaced to comprise the complete hammer bank of a line to be printed each connected to the second ends of a different pair of opposite springs, one from said first set and one from said second set, for restrained movement in directions generally normal to said bar and to said springs.
Claim 12
Dependent Claim
298 words
In combination, a support plate, a pair of uprights mounted on said support plate in spaced relation, a support bar connected between said uprights and extending parallel to said plate along a first axis, a channel member having a central web wider than said support bar and connected to said bar and having a parallel flanges extending normal to said web and away from said bar, a first set of independent parallel leaf springs extending normal to said bar and having first ends overlying one of said flanges and projecting over and beyond said bar to second ends, a second set of independent parallel leaf springs extending normal to said bar and having first ends overlying the other of said flanges and proJecting over and beyond said bar to second ends, each spring of said first set overlying and opposite a different spring of said second set, in which said springs of each set comprise adjacent pairs, each pair being formed at their first ends with confronting recesses to receive a single fastener, gib means for each pair overlying said first ends of said pair and said flange and formed with an aperture, and detachable fastening means for clamping said gib means to said support and comprising means engaging said gib means and means extending through said aperture and said recesses to fix said springs to said support, whereby each of said pairs is independently and detachably mounted to the corresponding flange, and elongated print hammers closely spaced to comprise the complete hammer bank of a line to be printed each connected to the second ends of a different pair of opposite springs, one from said first set and one from said second set, for restrained movement in directions generally normal to said bar and to said springs.
Claim 13
Dependent Claim
215 words
A print head for a high-speed printer of the kind having a type carrier movable past a line of print, comprising: a base frame adapted to be mounted between the side frames of a printer, an integral elongated support means extending parallel to and at least coextensive with said line of print, means mounting said support means on said base frame in spaced parallel relation thereto, a bank of adjacent parallel print hammers closely spaced on centers corresponding to a complete line of print, said support means comprising an elongated channel beam having parallel flanges extending parallel to said frame, each of said hammers being resiliently mounted on said channel by a different pair of leaf springs, each of said pairs of leaf springs being mounted at a first end on said hammer and at a second end on a different one of said flanges, said springs extending normal to the direction of elongation of said channel, the springs on each of said flanges comprising adjacent pairs formed with confronting complementary recesses adapted to receive a single fastener, a fastener securing each such pair to the corresponding flange, and gib means between said fastener and said pairs, said gib means being engaged by said fastener to clamp each pair of springs to said support means.
Claim 14
Dependent Claim
215 words
A print head for a high-speed printer of the kind having a type carrier movable past a line of print, comprising: a base frame adapted to be mounted between the side frames of a printer, an integral elongated support means extending parallel to and at least coextensive with said line of print, means mounting said support means on said base frame in spaced parallel relation thereto, a bank of adjacent parallel print hammers closely spaced on centers corresponding to a complete line of print, said support means comprising an elongated channel beam having parallel flanges extending parallel to said frame, each of said hammers being resiliently mounted on said channel by a different pair of leaf springs, each of said pairs of leaf springs being mounted at a first end on said hammer and at a second end on a different one of said flanges, said springs extending normal to the direction of elongation of said channel, the springs on each of said flanges comprising adjacent pairs formed with confronting complementary recesses adapted to receive a single fastener, a fastener securing each such pair to the corresponding flange, and gib means between said fastener and said pairs, said gib means being engaged by said fastener to clamp each pair of springs to said support means.
Claim 15
Dependent Claim
35 words
The apparatus of claim 7 further comprising: a group of print-hammer-actuating means, one for each hammer, mounted on said frame adjacent said hammers and each operable to drive its associated hammer away from said frame.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |