US3783786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-inking hand stamp
Assignee: Individual
•
Filing: 1972-03-20
•
Granted: 1974-01-08
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Expires: 1992-03-20
Abstract
Abstract A self-inking hand stamp includes a novel positively indexing, quick-settable character band printing unit structure and a novel inking structure, as well as a simple, rugged and durable arrangement of parts for extended life in hard usage.
Inventors
- 👤 L Ellison
- 👤 C Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:37
CPC Classifications
B; B41; B41K; B41K1/00; B41K1/08; B41K1/10; B41K1/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
295 words
A hand stamp assembly comprising an upright body frame having matched elongated slots including a base to be thrustingly engaged with an object to be imprinted, a printing frame, a printing unit within the body frame and operatively coupled with said printing frame by means of connecting means from the printing unit to the printing frame riding in said slots, said printing unit having character-carrying means movable to shift different printing characters thereon into printing position facing toward said base, and means normally biasing the printing frame and thereby the printing unit into a retracted position on the body frame away from said base and from which position the printing frame can be moved in opposition to the biasing means to drive the printing characters into imprinting engagement with an object against which the base is thrustingly engaged, including: a self-inking device comprising a carriage having side plates pivotally attached within said body frame and printing frame and carrying an inking pad therebetween; said plates having matching control cam slots therein; said connecting means being operatively engaged in said cam slots and said elongated slots to effect swinging of the carriage between a position wherein the inking pad is in inking contact with the printing characters which are in printing position in a retracted relation of the printing frame and the printing unit relative to said frame and base, and a clearance position relative to said printiNg frame and the printing unit wherein the inking pad is located at one side of the body frame to permit movement of the printing frame and the printing unit in opposition to said biasing means and relative to said body frame to effect imprinting by the inked printing characters upon an object against which the base is thrust.
Claim 2
Dependent Claim
295 words
A hand stamp assembly comprising an upright body frame having matched elongated slots including a base to be thrustingly engaged with an object to be imprinted, a printing frame, a printing unit within the body frame and operatively coupled with said printing frame by means of connecting means from the printing unit to the printing frame riding in said slots, said printing unit having character-carrying means movable to shift different printing characters thereon into printing position facing toward said base, and means normally biasing the printing frame and thereby the printing unit into a retracted position on the body frame away from said base and from which position the printing frame can be moved in opposition to the biasing means to drive the printing characters into imprinting engagement with an object against which the base is thrustingly engaged, including: a self-inking device comprising a carriage having side plates pivotally attached within said body frame and printing frame and carrying an inking pad therebetween; said plates having matching control cam slots therein; said connecting means being operatively engaged in said cam slots and said elongated slots to effect swinging of the carriage between a position wherein the inking pad is in inking contact with the printing characters which are in printing position in a retracted relation of the printing frame and the printing unit relative to said frame and base, and a clearance position relative to said printiNg frame and the printing unit wherein the inking pad is located at one side of the body frame to permit movement of the printing frame and the printing unit in opposition to said biasing means and relative to said body frame to effect imprinting by the inked printing characters upon an object against which the base is thrust.
Claim 3
Dependent Claim
40 words
An assembly according to claim 1, wherein said body frame includes stop surfaces, and stop lug means on said plates of the carriage engageable with said stop surfaces to assure proper registration of the ink pad with the printing characters.
Claim 4
Dependent Claim
80 words
An assembly according to claim 2 having stop lugs projecting from said printing frame into said longitudinal slots and engageable with a stop surface provided at an end of said slots in the retracted position of the printing frame, said engagement of the carriage plate lugs with the body frame stop surfaces and engagement of the printing frame lugs with said slot end stop surfaces being coordinated to relieve the stop lugs on the carriage plates from undue impact wear.
Claim 5
Dependent Claim
72 words
An assembly according to claim 1, wherein said body frame comprises spaced vertical bars and said printing frame comprises spaced vertical legs reciprocably movably positioned along the outer sides of said frame bars, said frame bars having said matched longitudinal slots therein, and said printing frame legs having lugs thereon projecting into said slots, said slots having end stop surfaces engaged by said lugs in the retracted position of the printing frame.
Claim 6
Dependent Claim
95 words
An assembly according to claim 4, including a shaft pin connecting said printing head with said printing frame legs and extending through said vertical slots spaced from said lugs, and studs carried by said legs and extending through said longitudinal slots intermediate said shaft pin and said lugs and engaging with means on said printing unit and cooperating with said shaft pin to hold the printing unit in stable, vertical, centered working relation within the body frame, said shaft pin extending through said cam slots in the inking carriage plates and comprising said coupling means.
Claim 7
Dependent Claim
124 words
An assembly according to claim 1, wherein said character-carrying means comprise a yieldable band having a series of printing characters thereon, said printing unit including a transverse rigid thrust bar facing generally toward said base and having a surface facing toward the back of said band and of a width to receive selected printing character-carrying areas of the band in printing position, said surface having a depression therein, and said back of the band being normally spaced from said surface across said depression but engaging the thrust bar at opposite sides of the depression, whereby inward yielding into said depression of the band is permitted when the printing characters in printing position encounter uneven, angular or tilted surfaces during imprinting marking of an object.
Claim 8
Dependent Claim
38 words
An assembly according to claim 6, said band having on the back thereof indexing means projecting partially into said depression but remaining normally spaced from said surface within the depression except at the opposite sides of the depression.
Claim 9
Dependent Claim
19 words
An assembly according to claim 7, wherein said indexing means comprise resilient projections on the back of the band.
Claim 10
Dependent Claim
42 words
An assembly according to claim 8, said projections on the back of the band comprising transverse serration-like rib teeth, and band moving wheel means on the printing unit having complementary transverse rigid rib teeth meshing with said rib teeth on the band.
Claim 11
Dependent Claim
116 words
An assembly according to claim 9, said rib teeth on the band being provided in respective areas having a length substantially equal to the width of said depression and the back of the band being free from teeth at both ends of the tooth area, whereby in the movement of the band across said thrust bar said teeth provide a mild frictional resistance to movement across the portions of the bar at opposite sides of said depression and immediately on passing of the tooTh area from said portions of the bar into registration with said depression there is relief of the resistance and sensible indication that the associated printing character has been moved into printing position.
Claim 12
Dependent Claim
67 words
An assembly according to claim 1, said carriage including an ink pad supporting panel hingedly mounted on and between said carriage plates, and means normally latching said panel in position on said plates to support the ink pad for its inking function and the latching means being releasable for swinging the panel away from the inking position for access to the inking pad to supply ink thereto.
Claim 13
Dependent Claim
32 words
An assembly according to claim 11, said latching means including a latching projection on said panel, and a transverse rod secured to and between said panels and engageable by said latching projection.
Claim 14
Dependent Claim
46 words
An assembly according to claim 11, comprising a pair of spaced rods secured to and between said carriage plates, said panel being hingedly connected to one of said rods and the latching means comprising a structure releasably engageable with snap-action with the other of said rods.
Claim 15
Dependent Claim
22 words
An assembly according to claim 11, said panel having a tray secured thereto, and said inking pad being carried by said tray.
Claim 16
Dependent Claim
109 words
An assembly in accordance with claim 1 in which said matched elongated slots have a shoulder at the end farthest from the base, stop lugs on the printing frame extend into said slots and engage said shoulders to limit movement of the printing frame to said retracted position, said connecting means from the printing unit to the printing frame comprises a shift pin secured to the printing frame at a locus spaced from said lugs, and extending through said matched elongated slots; and studs fastened to said printing frame, intermediate said shaft pin and said lugs, and extending through said matched elongated slots to engagement with the printing unit.
Claim 17
Dependent Claim
38 words
An assembly according to claim 11, including a snap latch mechanism on said panel and said carriage for normally retaining the panel in place on the carriage to hold the pad in position for inking the printing characters.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |