Patent US3590986A successfully refreshed from Google Patents.
US3590986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer feed
Assignee: EW Bliss Co Inc
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Filing: 1968-10-01
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Granted: 1971-07-06
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Expires: 1988-10-01
Abstract
Abstract A transfer feed in which the work gripping fingers are connected to a pair of feed bars. The bars are supported intermediate their ends and at their ends for sliding lateral and longitudinal movement. Cam units are connected to the bars at either end to effect the lateral movement and a third cam unit connected to one end of the bars effects longitudinal movement. No torsional forces are imposed on the bars thus permitting the feeding of heavier parts than has been possible with other types of feeds.
Inventors
- 👤 Ralph L Andrews
- 👤 William Hollenbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05; B21D43/055; B65; B65G; B65G25/00; B65G25/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
280 words
A transfer feed mechanism comprising; a. a pair of feed bars positioned in parallel spaced-apart relationship, b. support means movably supporting said feed bars for lateral reciprocating movement toward and away from one another and for longitudinal reciprocating movement, c. first drive means for driving said feed bars in lateral reciprocating movement toward and away from one another, d. said first drive means including first crank means mounted for rotation of a pivot axis located intermediate said pair of feed bars, said first crank means having first and second end portions disposed on opposite sides of said pivot axis, e. first connecting rod means pivotally connected with said first end portion of said first crank means and with one of said feed bars, f. second connecting rod means pivotally connected with said second end portion of said first crank means and with the other of said feed bars, g. power means for rotatably driving said first crank means about said pivot axis to reciprocate said feed bars toward and away from one another by alternate pulling and pushing force applied through said first and second connecting rod means by rotational movement of said first crank means, h. second drive means for driving said feed bars in longitudinal reciprocating movement, i. said second drive means including second crank means mounted for rotation about a pivot axis, j. longitudinal connecting rod means pivotally connected with said second crank means and with said feed bars, and k. power means for rotatably driving said second crank means to longitudinally reciprocate said feed bars by alternate pulling and pushing force applied through said longitudinal connecting rod means by rotational movement of said second crank means.
Claim 2
Dependent Claim
280 words
A transfer feed mechanism comprising; a. a pair of feed bars positioned in parallel spaced-apart relationship, b. support means movably supporting said feed bars for lateral reciprocating movement toward and away from one another and for longitudinal reciprocating movement, c. first drive means for driving said feed bars in lateral reciprocating movement toward and away from one another, d. said first drive means including first crank means mounted for rotation of a pivot axis located intermediate said pair of feed bars, said first crank means having first and second end portions disposed on opposite sides of said pivot axis, e. first connecting rod means pivotally connected with said first end portion of said first crank means and with one of said feed bars, f. second connecting rod means pivotally connected with said second end portion of said first crank means and with the other of said feed bars, g. power means for rotatably driving said first crank means about said pivot axis to reciprocate said feed bars toward and away from one another by alternate pulling and pushing force applied through said first and second connecting rod means by rotational movement of said first crank means, h. second drive means for driving said feed bars in longitudinal reciprocating movement, i. said second drive means including second crank means mounted for rotation about a pivot axis, j. longitudinal connecting rod means pivotally connected with said second crank means and with said feed bars, and k. power means for rotatably driving said second crank means to longitudinally reciprocate said feed bars by alternate pulling and pushing force applied through said longitudinal connecting rod means by rotational movement of said second crank means.
Claim 3
Dependent Claim
28 words
The device of claim 1 wherein said feed bars have end portions and undersurfaces and said support means includes pedestal means engaging said undersurfaces intermediate said end portions.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |