US3563535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding assembly
Assignee: SCM Corp
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Filing: 1969-05-05
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Granted: 1971-02-16
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Expires: 1989-05-05
Abstract
Abstract In a photocopying machine for copying original objects, for example books, a stack of copy paper sheets is contained in a paper feed drawer located at an operating position inside a compartment which is covered by a door. The forward end of the stack is lifted upwardly by an upwardly biased lifting member to a feeding position where the topmost sheet of the stack engages feed rollers which are rotatably driven to advance the sheets separately from the compartment for further use in the photocopying machine. To load the photocopying machine with another stack of copy paper sheets, the door is moved to uncover the compartment, and a cam connected to the door lowers the lifting member beneath the paper feed drawer. The paper feed drawer is held at the operating position by a latching mechanism, and an actuating member connected to the door releases the latching mechanism and enables the paper feed drawer to be pushed from the operating position by a resiliently biased plunger. The paper feed drawer may then be pulled to a loading position and a fresh stack of copy paper sheets placed therein. The drawer is then pushed to the operating position inside the compartment, thereby pressing the resiliently biased plunger backwardly until the latching mechanism again holds the drawer at the operating position. The door is then moved to cover the compartment, and in so doing moves the cam backwardly to enable the lifting member to move upwardly through the paper feed drawer and lift the forward end of the stack to the feeding position where the topmost sheet engages the paper feed rollers.
Inventors
- 👤 Gerard A Vitu
- 👤 Henry R Kuksa
- 👤 Theodore B Bernett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:16
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/585; G03B27/586
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
209 words
In a photocopying machine, the combination comprising a compartment having an opening, a lifting member supported for generally vertical movement in said storage compartment, resilient biasing means for urging said lifting member upwardly, a door for covering said opening of said storage compartment and supported for movement relative thereto, said door being movable in one direction for uncovering said opening of said storage compartment, operating means operable upon the uncovering movement of said door for moving said resiliently biased lifting member downwardly, a paper feed drawer having a floor for supporting a stack of sheets, said paper feed drawer being movable through the opening of said storage compartment to an operating position above said lifting member into the storage compartment, said floor of said paper feed drawer having an opening formed therein for movement of said lifting member therethrough, said door being movable in another direction for covering the opening of said storage compartment, and said operating means being operable upon the covering movement of said door for enabling said resiliently biased lifting member to move upwardly through the opening in the floor of said paper feed drawer to lift a portion of a stack of sheets thereon to a feeding position from which the sheets may be advanced.
Claim 2
Dependent Claim
209 words
In a photocopying machine, the combination comprising a compartment having an opening, a lifting member supported for generally vertical movement in said storage compartment, resilient biasing means for urging said lifting member upwardly, a door for covering said opening of said storage compartment and supported for movement relative thereto, said door being movable in one direction for uncovering said opening of said storage compartment, operating means operable upon the uncovering movement of said door for moving said resiliently biased lifting member downwardly, a paper feed drawer having a floor for supporting a stack of sheets, said paper feed drawer being movable through the opening of said storage compartment to an operating position above said lifting member into the storage compartment, said floor of said paper feed drawer having an opening formed therein for movement of said lifting member therethrough, said door being movable in another direction for covering the opening of said storage compartment, and said operating means being operable upon the covering movement of said door for enabling said resiliently biased lifting member to move upwardly through the opening in the floor of said paper feed drawer to lift a portion of a stack of sheets thereon to a feeding position from which the sheets may be advanced.
Claim 3
Dependent Claim
115 words
In a photocopying machine according to claim 1, the combination further comprising latching means for holding said paper feed drawer at the operating position in said compartment, said paper feed drawer being supported for sliding movement through the opening of said compartment, moving means for urging said paper feed drawer from the operating position in said compartment, said latching means being operable in response to the uncovering movement of said door to release said paper feed drawer for movement from the operating position, and said moving means being operable in response to the release of said latching means for moving said paper feed drawer from the operating position through the opening of said storage compartment.
Claim 4
Dependent Claim
95 words
A photocopying machine according to claim 2, wherein said latching means includes a latching flange on said paper feed drawer, a latching hook located in said compartment and engaging said latching flange to hold said paper feed drawer at the operating position, said latching hook being supported for movement relative to said latching flange, releasing means for moving said latching hook from engagement with said latching flange, and said releasing means being operable upon the uncovering movement of said door to release said paper feed drawer for movement from the operating position in said compartment.
Claim 5
Dependent Claim
109 words
In a photocopying machine according to claim 3, said latching hook being supported for generally vertical movement in said compartment, resilient biasing means for urging said latching hook upwardly, said latching hook having a camming surface formed thereon for engagement by said latching flange, said latching hook being moved downwardly upon engagement of said camming surface by said latching flange during movement of said paper feed drawer to the operating position in said compartment, and said latching hook being moved upwardly by said resilient biasing means upon movement of said latching flange past said camming surface to hold said paper feed drawer at the operating position in said compartment.
Claim 6
Dependent Claim
146 words
In a photocopying machine according to claim 4, said releasing means including a pawl supported for generally vertical movement in said compartment, said pawl having a latching hook flange for engaging said latching hook upon downward mOvement of said pawl to move said latching hook downwardly from engagement with said latching flange, an actuating rod supported for generally lateral movement in said compartment and being connected to said door for movement therewith, said pawl having a camming flange formed thereon for engagement by said actuating rod during lateral movement thereof, said actuating rod being movable in one direction past said camming flange during the uncovering movement of said door, and said camming flange of said pawl being engaged by said actuating rod during the uncovering movement of said door to move said pawl downwardly to release said paper feed drawer for movement from the operating position.
Claim 7
Dependent Claim
85 words
In a photocopying machine according to claim 5, said actuating rod being movable in another direction past said camming flange during the covering movement of said door, said camming flange being engaged by said actuating rod during the covering movement of said door to move said pawl upwardly from engagement with said latching hook, and resilient biasing means for urging said pawl downwardly upon movement of said actuating rod past the camming flange to bring said latching hook flange into engagement with said latching hook.
Claim 8
Dependent Claim
107 words
A photocopying machine according to claim 1, wherein said operating means includes a cam for engaging said upwardly biased lifting member, said cam being supported for sliding movement relative to said lifting member, means connecting said cam to said door for movement therewith, said cam being movable in one direction upon the opening movement of said door to lower said upwardly biased lifting member, and said cam being movable in another direction upon the covering movement of said door to enable said upwardly biased lifting member to move upwardly through the opening in the floor of said paper feed drawer at the operating position in said compartment.
Claim 9
Dependent Claim
103 words
In a photocopying machine according to claim 7, said lifting member being pivotally supported in said compartment and having a substantially upright portion for movement through the opening in the floor of said paper feed drawer, said cam being supported for sliding movement on said pivotally supported lifting member, said cam having a surface portion for lowering said upright portion of said lifting member beneath the floor of said paper feed drawer during the initial uncovering movement of said door, and said cam having another surface portion for holding said lifting member in a lowered position during subsequent uncovering movement of said door.
Claim 10
Dependent Claim
94 words
In a photocopying machine according to claim 8, the combination further comprising a plate for supporting a portion of a stack of copy paper sheets contained in said paper feed drawer, said plate being hingedly connected to said floor and covering the opening formed therein, and said plate being pivoted upwardly to lift the portion of a stack of copy paper sheets supported thereon by the movement of the upright portion of the lifting member through the opening formed in the floor of said paper feed drawer upon the covering movement of said door.
Claim 11
Dependent Claim
100 words
In a photocopying machine according to claim 1, the combination further comprising sheet-advancing means for advancing sheets of copy paper from the feeding position in said compartment, said sheet-advancing means being located in said compartment above the floor of said paper feed drawer, and said upwardly biased lifting member being operable upon the covering movement of said door to move through the opening in the floor of said paper feed drawer to lift a portion of a stack of sheets supported thereon and press the topmost sheet of the stack into engagement with said sheet-advancing means at the feeding position.
Claim 12
Dependent Claim
62 words
In a photocopying machine according to claim 10, the combination further comprising sheet-separating means for separating an advancing sheet from the remainder of the stack supported on the floor of said paper feed drawer, and said sheet-separating means being located in vertically sPaced relation with said sheet-advancing means for engaging a sheet being advanced from the feeding position by said sheet-advancing means.
Claim 13
Dependent Claim
59 words
In a photocopying machine according to claim 10, the combination further comprising sheet-separating means for separating an advancing sheet at the feeding position from the remainder of the stack supported on the floor of said paper feed drawer, and said sheet-separating means being carried by said paper feed drawer for movement therewith from the operating position in said compartment.
Claim 14
Dependent Claim
75 words
In a photocopying machine according to claim 1, said paper feed drawer being supported for sliding movement relative through the opening of said compartment, said paper feed drawer being slidably movable from the operating position inside the compartment to a loading position outside the compartment to enable a stack of copy paper sheets to be placed thereon, and said paper feed drawer being slidably movable through said opening to said operating position in said compartment.
Claim 15
Dependent Claim
117 words
In a photocopying machine according to claim 13, the combination further comprising sheet-advancing means for advancing sheets of copy paper from the feeding position in said compartment, said sheet-advancing means being located in the said compartment above said operating position, said paper feed drawer being supported for sliding movement to said feeding position in vertically spaced relation to said sheet-advancing means in said compartment, and said resiliently biased lifting member being operable upon the covering movement of said door to move upwardly through the opening in the floor of said paper feed drawer to lift a portion of a stack supported thereon and press the topmost sheet into engagement with said sheet-advancing means at the feeding position.
Claim 16
Dependent Claim
59 words
In a photocopying machine according to claim 14, the combination further comprising sheet-separating means for separating an advancing sheet at the feeding position from the remainder of the stack supported on the floor of said paper feed drawer, and said sheet-separating means being carried by said paper feed drawer for movement therewith from the operating position in said compartment.
References Cited (Backward Citations)
US1626353A
Cited
US3273883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |