Patent US3735852A successfully refreshed from Google Patents.
US3735852A
Expired / Lapsed
US
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Transfer mechanism
Assignee: Northwest Tool and Die Inc
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Filing: 1972-04-11
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Granted: 1973-05-29
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Expires: 1992-04-11
Abstract
Abstract A transfer mechanism is adapted for inclusion in conventional die assemblies operated by reciprocating presses. A cam-actuated drive mechanism induces transferring movement of an assembly having a lost-motion interconnection between certain components, and this lost-motion is utilized to induce a cam-controlled lifting-retracting action at the opposite extremes of a normally horizontal transferring movement. The lifting and carrying component is embraced by a member establishing a vertical guideway, and these two members move together horizontally. A second set of these members, connected in sequence, provides movement of the mechanism in three successive dimensions.
Inventors
- 👤 Keefe T A Wyoming O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:55
CPC Classifications
B; B23; B23Q; B23Q7/00; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
In comBination with a die assembly having upper and lower sections adapted for relative reciprocation, a transfer mechanism including means forming a first guideway on one of said die sections, a carrier bar movably mounted on said one section, an actuator bar movably mounted in said first guideway, said carrier and actuator bar having interengaged cam and follower means providing for transverse movement of said carrier with respect to said actuator bar, a guide bar movably mounted in said first guideway, said guide and carrier bar having second guide means establishing a direction of relative movement of said carrier transverse to said guideway, holding means releasably securing said guide bar at spaced positions along said first guideway, and drive means operative to reciprocate said actuator bar along said first guideway, wherein the improvement comprises: an assembled relationship wherein said carrier bar is interposed between said actuator bar and said guide bar; and said holding means releases on application of predetermined force to said guide bar independently of the position thereof.
Claim 2
Dependent Claim
170 words
In comBination with a die assembly having upper and lower sections adapted for relative reciprocation, a transfer mechanism including means forming a first guideway on one of said die sections, a carrier bar movably mounted on said one section, an actuator bar movably mounted in said first guideway, said carrier and actuator bar having interengaged cam and follower means providing for transverse movement of said carrier with respect to said actuator bar, a guide bar movably mounted in said first guideway, said guide and carrier bar having second guide means establishing a direction of relative movement of said carrier transverse to said guideway, holding means releasably securing said guide bar at spaced positions along said first guideway, and drive means operative to reciprocate said actuator bar along said first guideway, wherein the improvement comprises: an assembled relationship wherein said carrier bar is interposed between said actuator bar and said guide bar; and said holding means releases on application of predetermined force to said guide bar independently of the position thereof.
Claim 3
Dependent Claim
42 words
A combination as defined in claim 1, additionally including stop means limiting the relative freedom of movement of said actuator bar and guide bar in the direction of said first guideway, said stop means being independent of said cam and follower means.
Claim 4
Dependent Claim
34 words
A combination as defined in claim 2, wherein said stop means is a spaced pair of abutments on said actuator bar, said abutments being engageable with the opposite ends, respectively, of said guide bar.
Claim 5
Dependent Claim
19 words
A combination as defined in claim 1, wherein said holding means is a spring-loaded detent engageable with a recess.
Claim 6
Dependent Claim
15 words
A combination as defined in claim 1, wherein said holding means is a friction brake.
Claim 7
Dependent Claim
68 words
A combination as defined in claim 5, wherein said brake includes a third guideway transverse to said first guideway and normally fixed with respect to said one die section, and includes a pair of shoe members slidably mounted in said third guideway and engageable with opposite surfaces, respectively, on said guide bar, and also includes biasing means urging said shoe members into bearing engagement with said guide bar.
Claim 8
Dependent Claim
65 words
A combination as defined in claim 1, additionally including a second carrier bar and guideway means interengaging said carrier bars for relative transverse movement, and also including second cam and follower means interengaging said actuator bar and second carrier bar, said first and second cam and follower means each having a dwell portion providing a sequence of directions of motion to said second carrier bar.
References Cited (Backward Citations)
US3077259A
Cited
US3655070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |