US3693543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imprinting mechanism
Assignee: Singer Co
•
Filing: 1970-10-26
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Granted: 1972-09-26
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Expires: 1990-10-26
Abstract
Abstract A cam operative mechanism for controlling the platen of a printing device to provide a uniform printing pressure on articles of varying thicknesses. The platen is normally springbiased in its printing stroke to impress the article to be printed against the print die. During such movement a wedge is moved beneath and into engagement with a pair of yieldable arms carried by the platen to impart an additional movement to the platen, whereby printing pressure is applied. Regardless of the thickness of the article to be printed, an equal printing pressure is effected by the wedge and the arms, carried by the platen, thereafter yield as the printing stroke is completed.
Inventors
- 👤 Harry F Noller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:59
CPC Classifications
B; B41; B41F; B41F1/00; B41F1/26; B41F1/54
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
250 words
A printing device comprising: a framework; a stationary printing die plate mounted in said framework; a platen means having a planar surface for effecting contact of an article to be printed with said die plate when raised from an inactive position to an active position; means for moving said platen means from said inactive position to said active position; and platen pressure means for applying printing pressure to said platen means when in said active position, said platen pressure means including: a wedge-shaped member having a tapered surface movable along a path from an inoperative to an operative position, said path being substantially transverse to the path of travel of said platen means; a pair of arms pivotally mounted on said platen means, each said arm having a free end adapted to contact said tapered surface as said wedge-shaped member travels to said operative position; yieldable means for biasing each of said arms to a predetermined angular position relative to a center line perpendicular to said planar surface of said platen means and in a direction toward said inoperative position; and means for moving said wedge-shaped member between said inoperative and said operative positions when said platen means is in said active position so that said free ends contact said tapered surface, movement of said wedge-shaped member toward said operative position after said contact causing said arms to pivot from said predetermined angular position toward said operative position of said wedge-shaped member thereby applying printing pressure to said platen means.
Claim 2
Dependent Claim
250 words
A printing device comprising: a framework; a stationary printing die plate mounted in said framework; a platen means having a planar surface for effecting contact of an article to be printed with said die plate when raised from an inactive position to an active position; means for moving said platen means from said inactive position to said active position; and platen pressure means for applying printing pressure to said platen means when in said active position, said platen pressure means including: a wedge-shaped member having a tapered surface movable along a path from an inoperative to an operative position, said path being substantially transverse to the path of travel of said platen means; a pair of arms pivotally mounted on said platen means, each said arm having a free end adapted to contact said tapered surface as said wedge-shaped member travels to said operative position; yieldable means for biasing each of said arms to a predetermined angular position relative to a center line perpendicular to said planar surface of said platen means and in a direction toward said inoperative position; and means for moving said wedge-shaped member between said inoperative and said operative positions when said platen means is in said active position so that said free ends contact said tapered surface, movement of said wedge-shaped member toward said operative position after said contact causing said arms to pivot from said predetermined angular position toward said operative position of said wedge-shaped member thereby applying printing pressure to said platen means.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein said yieldable means includes means for adjusting said predetermined angular position of said arms.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 wherein each of said free ends of said pair of arms is provided with a rotatable roller for contacting said tapered surface.
Claim 5
Dependent Claim
108 words
The apparatus of claim 1 wherein said means for moving said platen means includes first and second pairs of spaced arms for supporting said platen means, each said pair rockably mounted for parallel motion in said framework to maintain said planar surface of said platen means parallel to said die plate; bias means coupled to at least one of said spaced arms and said framework for urging said platen means toward said active position; lever means for normally retaining said platen means in said inactive position; and control means for moving said lever means to permit said bias means to move said platen means to said active position.
Claim 6
Dependent Claim
14 words
The apparatus of claim 1 further including roller means for supporting said wedge-shaped member.
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |