Patent US3741535A successfully refreshed from Google Patents.
US3741535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet stock feeding mechanism
Assignee: Garden City Envelope Co
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Filing: 1971-05-17
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Granted: 1973-06-26
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Expires: 1991-05-17
Abstract
Abstract The described apparatus feeds sheet stock such as envelope blanks from the bottom of a supply stack into a transporting conveyor such as the conveyor for an envelope-converting machine. The apparatus includes a pair of transverse load-supporting members. A segment feed roll is mounted on a drive shaft which is journaled in a first bearing member affixed to one of the supporting members. A pinch feed roll is disposed adjacent the segment feed roll to form a nip through which the sheet stock may be drawn. The pinch roll has a drive shaft journaled in a second bearing member which is resiliently mounted on the other of the transverse supporting members, and this drive shaft is driven through a universal coupling.
Inventors
- 👤 V Palkovic
- 👤 H Semple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:53
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/30; B65H3/02; B65H3/06; B65H3/063; B65H3/08; B65H2404/00; B65H2404/60; B65H2404/66; B65H2404/662
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
257 words
In an apparatus for feeding sheets of sheet stock, such as envelope blanks, by removing such sheets from a supply stack and feeding the sheets along a predetermined path into a transporting conveyor; a frame including a pair of spaced side members between which said sheets are moved along said path; a pair of spaced, substantially parallel stationary rigid unitary load-supporting members each extending transversely between and rigidly supported in said side members, one of said supporting members being disposed on one side of said path and the other of said supporting members being disposed on the other side of said path; first bearing means mounted on one of said supporting members and disposed between and spaced from said side members of said frame; a first feed roll disposed adjacent to said first bearing means; a drive shaft journaled in said first bearing means and supporting said first feed roll; second bearing means mounted on the other of said transverse supporting members and disposed between and spaced from said side members of said frame; a second feed roll disposed adjacent said first feed roll to form a nip through which such sheets may be drawn during removal from such supply stack, said second feed roll being disposed adjacent said second bearing means; a drive shaft journaled in said second bearing means and supporting said second feed roll; and power means for rotating said drive shafts, whereby sheets moved into position for engagement by said rolls will be drawn through the nip and pulled from said supply stack.
Claim 2
Dependent Claim
257 words
In an apparatus for feeding sheets of sheet stock, such as envelope blanks, by removing such sheets from a supply stack and feeding the sheets along a predetermined path into a transporting conveyor; a frame including a pair of spaced side members between which said sheets are moved along said path; a pair of spaced, substantially parallel stationary rigid unitary load-supporting members each extending transversely between and rigidly supported in said side members, one of said supporting members being disposed on one side of said path and the other of said supporting members being disposed on the other side of said path; first bearing means mounted on one of said supporting members and disposed between and spaced from said side members of said frame; a first feed roll disposed adjacent to said first bearing means; a drive shaft journaled in said first bearing means and supporting said first feed roll; second bearing means mounted on the other of said transverse supporting members and disposed between and spaced from said side members of said frame; a second feed roll disposed adjacent said first feed roll to form a nip through which such sheets may be drawn during removal from such supply stack, said second feed roll being disposed adjacent said second bearing means; a drive shaft journaled in said second bearing means and supporting said second feed roll; and power means for rotating said drive shafts, whereby sheets moved into position for engagement by said rolls will be drawn through the nip and pulled from said supply stack.
Claim 3
Dependent Claim
12 words
The structure of claim 1 wherein said transversely-extending load-supporting members are tubular.
Claim 4
Dependent Claim
47 words
The apparatus of claim 1 wherein said first feed roll comprises at least one segment roll having at least one recess therein for receiving and engaging the leading edge of one of said sheets of sheet stock and bending it into the nip of the feed rolls.
Claim 5
Dependent Claim
31 words
The apparatus of claim 3 and further including edge manipulating means for sequentially moving the leading edge of each sheet of sheet stock into position for engagement by said segment roll.
Claim 6
Dependent Claim
99 words
The apparatus of claim 4 wherein said edge manipulating means includes a suction arm mounted for movement between a raised position in engagement with the bottom sheet in said supply stack above said segment roll periphery and a lowered position below said segment roll periphery, and means synchronized with the rotation of said segment roll for effecting movement of said suction arm between its two positions, whereby the leading edge of the sheet may be drawn downwardly into engagement with said segment roll and may be further moved downwardly by said segment roll into the nip between said rolls.
Claim 7
Dependent Claim
54 words
The apparatus of claim 5 wherein said suction arm moving means includes an operating cam of a configuration which will cause the suction arm to move downwardly with a delay in the downward movement after the sheet-engaging end of the suction arm has moved below the level of the periphery of the segment rolls.
Claim 8
Dependent Claim
63 words
The apparatus of claim 5 and further including means synchronized with said suction arm moving means for sequentially separating the leading edge of the bottom sheet in the stack and supporting the leading edge of the remaining sheets in the stack as the leading edge of the bottom sheet is being drawn downwardly into engagement with said segment roll by said suction arm.
Claim 9
Dependent Claim
31 words
The apparatus of claim 1 wherein at least one of said feed rolls is resiliently mounted, and the drive shaft thereof is driven by said power means through a universal coupling.
Claim 10
Dependent Claim
33 words
The apparatus of claim 8 wherein the surface of each of said feed rolls is nonresilient whereby any resiliency in said rolls is as a result of the resilient mounting of said rolls.
Claim 11
Dependent Claim
72 words
The apparatus of claim 8 wherein said second bearing means compriseS two members connected together for movement toward and away from a predetermined position relative to each other and means resiliently urging said members toward said predetermined position, one of said members being affixed to said other transverse supporting member, the other of said members carrying said second feed roll with the drive shaft of said second feed roll being journaled therein.
Claim 12
Dependent Claim
91 words
The apparatus of claim 1 and further including a third feed roll disposed downstream from and adjacent to said first and second feed rolls and having a drive shaft journaled in said first bearing means and operatively connected to said power means, and pressure roll means operatively mounted on said second bearing means for movement between an inoperative position remote from said third feed roll means and an operative position adjacent said third feed roll means for holding the sheet stock passing therebetween in driving engagement with said third feed roll.
Claim 13
Dependent Claim
33 words
The apparatus of claim 11 and further including means for moving said pressure roll means between its inoperative and operative positions and for releasably locking said pressure roll means in its operative position.
Claim 14
Dependent Claim
33 words
The apparatus of claim 11 and further including means for moving said pressure roll means between its inoperative and operative positions and for releasably locking said pressure roll means in its operative position.
Claim 15
Dependent Claim
33 words
The apparatus of claim 11 wherein said pressure roll means includes a pair of spaced idler rolls and an arcuate guide member for guiding the sheet stock partially around said third feed roll.
Claim 16
Dependent Claim
33 words
The apparatus of claim 11 wherein said pressure roll means includes a pair of spaced idler rolls and an arcuate guide member for guiding the sheet stock partially around said third feed roll.
Claim 17
Dependent Claim
29 words
The apparatus of claim 13 wherein means is provided resiliently urging said idler rolls toward said third feed roll when said pressure roll means is in its operative position.
Claim 18
Dependent Claim
29 words
The apparatus of claim 13 wherein means is provided resiliently urging said idler rolls toward said third feed roll when said pressure roll means is in its operative position.
Claim 19
Dependent Claim
100 words
The apparatus of claim 1 and further including a third feed roll disposed downstream from and adjacent to said first feed roll and having a drive shaft generally parallel to said drive shaft of said first feed roll, said first and third feed rolls being positioned in mutually overlapping relation with one another as viewed parallel to their axes of rotation, and means for maintaining sheet stock in driving engagement with said third feed roll along the peripheral segment thereof adjacent a line through said nip between said first and second feed rolls and tangent to said third feed roll.
Claim 20
Dependent Claim
100 words
The apparatus of claim 1 and further including a third feed roll disposed downstream from and adjacent to said first feed roll and having a drive shaft generally parallel to said drive shaft of said first feed roll, said first and third feed rolls being positioned in mutually overlapping relation with one another as viewed parallel to their axes of rotation, and means for maintaining sheet stock in driving engagement with said third feed roll along the peripheral segment thereof adjacent a line through said nip between said first and second feed rolls and tangent to said third feed roll.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |