Patent US3754667A successfully refreshed from Google Patents.
US3754667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer mechanism
Assignee: Individual
•
Filing: 1972-01-07
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Granted: 1973-08-28
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Expires: 1992-01-07
Abstract
Abstract A mechanism for transferring workpieces along a succession of equidistantly spaced work stations. The mechanism comprises a plurality of workpiece-engaging members carried by one or more bars, together with actuating means for moving the bars in a rectangular path to engage, transfer, and disengage the workpieces, and retract to their original positions. The actuating means comprises a reciprocable actuator which may be linked with the motion of a press, link and bell crank means connecting the actuator to the bars, and cam and cam follower means connected to the bell crank to create rectilinear motion of the work-engaging bars in response to the reciprocating motion of the actuator.
Inventors
- 👤 R Storch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:28
CPC Classifications
B; B65; B65G; B65G25/00; B65G25/02; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05; B21D43/055
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
In a transfer mechanism for moving workpieces along equidistantly spaced stations, a work-engaging bar having workengaging members spaced therealong, a reciprocable actuator, and means responsive to reciprocation of said actuator for moving said bar along a rectilinear path first approaching said workpieces, transferring said workpieces to their next stations, withdrawing from said workpieces, and returning to the original position, said means comprising a pair of bell cranks pivotally joined to said bar, pivotal supports for said bell cranks, guide means supporting said pivotal supports for movement parallel to the path of advancement of the workpieces, a connection between one arm of at least one bell crank and said actuator, a cam follower on at least one of said bell cranks, and a fixed cam track engaged by said cam follower for controlling pivotal movement of said bell crank.
Claim 2
Dependent Claim
138 words
In a transfer mechanism for moving workpieces along equidistantly spaced stations, a work-engaging bar having workengaging members spaced therealong, a reciprocable actuator, and means responsive to reciprocation of said actuator for moving said bar along a rectilinear path first approaching said workpieces, transferring said workpieces to their next stations, withdrawing from said workpieces, and returning to the original position, said means comprising a pair of bell cranks pivotally joined to said bar, pivotal supports for said bell cranks, guide means supporting said pivotal supports for movement parallel to the path of advancement of the workpieces, a connection between one arm of at least one bell crank and said actuator, a cam follower on at least one of said bell cranks, and a fixed cam track engaged by said cam follower for controlling pivotal movement of said bell crank.
Claim 3
Dependent Claim
18 words
The combination according to claim 1 in which said actuator is connected to both of said bell cranks.
Claim 4
Dependent Claim
43 words
The combination according to claim 2, further provided with a second work-engaging bar on the opposite side of said workpieces from said first bar, a second pair of bell cranks, pivotal supports, links, cam followers and cam tracks for said second workpiece-engaging bar.
Claim 5
Dependent Claim
43 words
The combination according to claim 1, said cam track having a rectilinear shape, and shoulders at diagonally opposite corners of said cam track for preventing reverse movement of said cam follower, said shoulders having sloping entrances permitting the cam follower to ride up.
Claim 6
Dependent Claim
18 words
The combination according to claim 1, the rectilinear path of said work-engaging bar being in a horizontal plane.
Claim 7
Dependent Claim
42 words
The combination according to claim 5, further provided with a second work-engaging bar on the opposite side of said workpieces from said first bar, a second pair of bell cranks, pivotal supports, cam followers and cam tracks for said second work-engaging bar.
Claim 8
Dependent Claim
43 words
The combination according to claim 6, said cam tracks having a rectilinear shape, and shoulders at diagonally opposite corners of said cam track for preventing reverse movement of said cam followers, said shoulders having sloping entrances permitting the cam followers to ride up.
Claim 9
Dependent Claim
18 words
The combination according to claim 1, the rectilinear path for said work-engaging bar being in a vertical plane.
Claim 10
Dependent Claim
35 words
The combination according to claim 1, said connection between the actuator and each bell crank comprising an arm on one of said bell cranks connected to the actuator, and a link connecting said bell cranks.
Claim 11
Dependent Claim
43 words
The combination according to claim 9, said cam track having a rectilinear shape, and shoulders at diagonally opposite corners of said cam track for preventing reverse movement of said cam follower, said shoulders having sloping entrances permitting the cam follower to ride up.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |