US3796427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stacking devices for printing machines
Assignee: Roland Offsetmaschinenfabrik Faber and Schleicher AG
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Filing: 1971-09-23
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Granted: 1974-03-12
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Expires: 1991-09-23
Abstract
Abstract The invention is concerned with sheet stacking devices for printing machines in which an auxiliary stack table is slid into position above a main stack table, and serves to solve the problem which arises when small format sheets are stacked and rear abutments are brought forward so that they foul the edge of the auxiliary table and prevent its being slid home. In the invention the rear abutments are linked so that they can be rocked clear of the auxuliary table under control of a first abutment. The first abutment is pivotally mounted so that it can be moved clear of the table during the table movement. In one embodiment the first abutment pivot is arranged parallel with the advancing edge of the table and is moved clear of the table path by contact with that edge. In another embodiment the first abutment is linked to a lever carrying a roller which engages a cam on the table. In a third embodiment the first abutment is movable by an electromagnet which is energised by a microswitch actuatable by a cam on the table.
Inventors
- 👤 H Reutter
- 👤 F Sendlinger
- 👤 H Alix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:47
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/32; B65H2801/00; B65H2801/03; B65H2801/21
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
315 words
A sheet feeding device of a printing press, said device comprising in combination: a frame an up and down movable main delivery pile table and an auxiliary delivery pile table; conveyor means having a portion thereof positioned above said auxiliary table for delivering sheet thereto guide means for slidably supporting said auxiliary table above and parallel to said main table into any one of several selected positions; a movable support means supported by and bridging said frame; said guide means being supported by said movable support means; front stop means secured to and protruding from the auxiliary table for aligning the leading edge of sheets delivered to the auxiliary table; rear stop means including a first rear stop member and a second rear stop member, said support means including pivotable means for supporting said rear stop members for alternately pivoting the same into an active position in which one stop member coacts with the trailing edge of sheets delivered to the auxiliary table to effect in conjunction with the front stop means aligning of the delivered sheets while the other stop member is an inactive position clear of the auxiliary table, and bias means for biasing said pivotable means of said support means toward the pivotable position in which the first rear stop member is in its active position while the second rear stop member is in its inactive position, placement of said table in one selected position freeing the bias means for pivoting the first rear stop member into its active position and placement of said table into another selected position moving said table into engagement with the second rear stop member thereby pivoting the pivotable means of said support means against the action of said bias means into a position in which the second rear stop member is in its active aligning position and the first stop member is in its inactive position.
Claim 2
Dependent Claim
315 words
A sheet feeding device of a printing press, said device comprising in combination: a frame an up and down movable main delivery pile table and an auxiliary delivery pile table; conveyor means having a portion thereof positioned above said auxiliary table for delivering sheet thereto guide means for slidably supporting said auxiliary table above and parallel to said main table into any one of several selected positions; a movable support means supported by and bridging said frame; said guide means being supported by said movable support means; front stop means secured to and protruding from the auxiliary table for aligning the leading edge of sheets delivered to the auxiliary table; rear stop means including a first rear stop member and a second rear stop member, said support means including pivotable means for supporting said rear stop members for alternately pivoting the same into an active position in which one stop member coacts with the trailing edge of sheets delivered to the auxiliary table to effect in conjunction with the front stop means aligning of the delivered sheets while the other stop member is an inactive position clear of the auxiliary table, and bias means for biasing said pivotable means of said support means toward the pivotable position in which the first rear stop member is in its active position while the second rear stop member is in its inactive position, placement of said table in one selected position freeing the bias means for pivoting the first rear stop member into its active position and placement of said table into another selected position moving said table into engagement with the second rear stop member thereby pivoting the pivotable means of said support means against the action of said bias means into a position in which the second rear stop member is in its active aligning position and the first stop member is in its inactive position.
Claim 3
Dependent Claim
66 words
The device according to claim 1 wherein said pivotable means comprise a pivot pin for each of said rear stop members and linkage means coupling said stop members for pivotable movement about said pins in one direction by the action of said bias means and for pivotable movement in the opposite direction in response to engagement of the second rear stop member with said auxiliary table.
Claim 4
Dependent Claim
106 words
The device according to claim 2 wherein said auxiliary table is of substantially rectangular configuration, two of the edges of the table being normal to the direction of displacement of the table, and wherein said front stop means are disposed parallel to said edges and the rear stop means being disposed adjacent to the other of said edges, the axis of the pivot pin for the first rear stop member being substantially parallel to said other edge and the axis of the pin for the second rear stop member being substantially normal to said other edge and substantially parallel to the surface of the auxiliary table.
Claim 5
Dependent Claim
101 words
The device according to claim 2 wherein the axes of said pivot pins are substantially parallel to the surface of said auxiliary table, and wherein said linkage means include a link mounting a cam follower and an edge portion of said other edge of the auxiliary table constitutes a cam surface engageable with said cam follower when the auxiliary table is slidably moved in said guide means into said other selected position, engagement of the cam follower with said cam surface upon said displacement of the table causing said pivoting of said support means against the action of said bias means.
Claim 6
Dependent Claim
138 words
The device according to claim 2 wherein the axes of said pivot pins are substantially parallel to the surface of said auxiliary table, and wherein solenoid means coact with said first rear stop member for causing in response to energization pivoting of the support means for the rear stop members into the position in which the first rear stop member is in its inactive position and the second rear stop member is in its active position, said solenoid means being connected in an energizing circuit including a circuit means, an edge portion of the auxiliary table engageable with the first rear stop member when said table is slidably moved in said guide means into said other selected position mounting a cam surface coacting with said switch means so as to operate the same for energizing said solenoid means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |