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US3921974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet orienting apparatus
Assignee: Pitney Bowes Inc
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Filing: 1974-10-03
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Granted: 1975-11-25
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Expires: 1994-10-03
Abstract
Abstract Disclosed is an apparatus for properly orienting a thin flexible lithographic master sheet prior to the master sheet being fed to and clamped onto the master sheet cylinder of a lithographic press. The apparatus is basically a flat tray with movable pushers mounted thereon for shifting a sheet deposited on the tray in a lateral direction with respect to the direction of travel of the sheet and also longitudinally along the direction of travel of the sheet in order to place the sheet in a precise predetermined position with respect to a take-away mechanism. The apparatus also includes a movable wire guide device which maintains the sheet in a flat condition while it is being oriented to prevent the sheet from buckling more than the very slight degree which is specifically provided for to assure proper orientation. The device is constructed to be self-powered and readily removable from the duplicating machine with which it is normally associated.
Inventors
- 👤 Joseph F Miciukiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:23
CPC Classifications
B; B41; B41L; B41L29/00; B41L29/12; B65; B65H; B65H9/00; B65H9/10; B65H9/101
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
281 words
A sheet orienting device for establishing a predetermined position of a sheet having a predetermined width and consisting of a relatively soft and limp material, said device comprising: A. an elongate relatively flat sheet supporting member having a fixed side edge guide extending along one longitudinal edge of said supporting member, B. sheet pushing means extending along the opposite longitudinal edge of said supporting member and normally spaced laterally of said supporting member from said fixed guide by a distance greater than the width of a sheet to be oriented, C. means mounting said sheet pushing means for limited movement toward and away from said fixed guide, the innermost limit of movement of said pushing means toward said fixed guide being a distance slightly less than the predetermined width of the sheet to be oriented, and D. actuating means for moving said pushing means toward said fixed guide from said normally spaced position to said innermost position and then back to a position where said pushing means is spaced from said fixed guide by a distance substantially equal to the predetermined width of the sheet, whereby a sheet placed on said supporting member is moved toward said fixed guide and is slightly buckled longitudinally to assure proper alignment of the edge of the sheet with said fixed guide and is then allowed to flatten on the sheet supporting means by said movement of said pushing means away from said fixed guide to said position where its distance from said fixed guide is substantially equal to the predetermined width of the sheet, after which said fixed guide and said pushing means define a channel for guiding the sheet during longitudinal movement thereof.
Claim 2
Dependent Claim
281 words
A sheet orienting device for establishing a predetermined position of a sheet having a predetermined width and consisting of a relatively soft and limp material, said device comprising: A. an elongate relatively flat sheet supporting member having a fixed side edge guide extending along one longitudinal edge of said supporting member, B. sheet pushing means extending along the opposite longitudinal edge of said supporting member and normally spaced laterally of said supporting member from said fixed guide by a distance greater than the width of a sheet to be oriented, C. means mounting said sheet pushing means for limited movement toward and away from said fixed guide, the innermost limit of movement of said pushing means toward said fixed guide being a distance slightly less than the predetermined width of the sheet to be oriented, and D. actuating means for moving said pushing means toward said fixed guide from said normally spaced position to said innermost position and then back to a position where said pushing means is spaced from said fixed guide by a distance substantially equal to the predetermined width of the sheet, whereby a sheet placed on said supporting member is moved toward said fixed guide and is slightly buckled longitudinally to assure proper alignment of the edge of the sheet with said fixed guide and is then allowed to flatten on the sheet supporting means by said movement of said pushing means away from said fixed guide to said position where its distance from said fixed guide is substantially equal to the predetermined width of the sheet, after which said fixed guide and said pushing means define a channel for guiding the sheet during longitudinal movement thereof.
Claim 3
Dependent Claim
92 words
A device according to claim 1 wherein said actuating means comprises: A. driving means operable through a fixed range of movement, B. driven means directly connected to said pushing means and resiliently connected to said driving means, C. means cooperating between said driving means and said driven means for reversing the direction of movement of said driven means before said driving means moves through its full range of movement, said reverse direction of movement of said driven means being accommodated by said resilient connection, and D. means for moving said driving means.
Claim 4
Dependent Claim
105 words
A device according to claim 2 wherein said driving means comprises a slide plate movably mounted adjacent said sheet supporting member and having an abutment means thereon, and wherein said driven means comprises: A. a first portion directly connected to said pushing means for moving said pushing means, B. a second portion resiliently connected to said slide bar for moving said driven member in one direction and C. a third portion operatively located to interfere with said abutment means on said driving member for causing said reverse direction movement of said driven member as said slide bar approaches the end of its range of movement.
Claim 5
Dependent Claim
167 words
A device according to claim 2 wherein said driving means comprises a slide plate movably mounted adjacent said sheet supporting member and having an abuTment means mounted thereon, and wherein said driven means comprises a pair of bell cranks each pivotally secured to said sheet supporting means and each having one leg connected to a single point on said pushing means, the opposite leg of one bell crank being resiliently connected to said slide bar and the opposite leg of the other bell crank being operatively located to interfere with said abutment means on said slide bar before said slide bar moves through its full range of movement whereby said slide plate moves said bell cranks and said pushing means in one direction through said resilient connection until said abutment means contacts said opposite leg of said other bell crank whereupon said bell cranks and said pushing means are moved in the opposite direction as said slide plate moves through the rest of its range of movement.
References Cited (Backward Citations)
US898831A
Cited
US3871644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |