US3768632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blank feed device in a transfer press
Assignee: Aida Engineering Ltd
•
Filing: 1971-12-30
•
Granted: 1973-10-30
•
Expires: 1991-12-30
Abstract
Abstract A blank feed device in which there is provided a pair of feed bars each having a plurality of grippers and connected together by a cross plate having elongated slots by means of pins which are slidingly received in said slots, a pair of links pivoted at one end to said pins, a common coupling member pivotally supporting the other ends of said links, a reciprocating means integrally connected at one end to said coupling member, a pinion rotatably supported at the other end of said reciprocating means, a stationary rack engaging one side of said pinion, a movable rack engaging the other side of said pinion and a pusher fixedly mounted on said movable rack.
Inventors
- 👤 N Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:11
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: 5
Claim 1
Independent Claim
245 words
In a transfer press of the type provided with a pair of work feed bars for performing a work transfer cycle including clamping, advancing, unclamping and return strokes, a blank feed device for feeding successive blanks to the press from a blank press station during the time period from the beginning of the advancing stroke to the ending of the unclamping stroke of the feed bars said blank feed device including a cross plate extending transversely of said pair of feed bars said cross plate having spaced elongated slots extending longitudinally thereof, pins loosely received in said slots for connecting said feed bars and cross plate together and for slidingly moving along said slots, a pair of links respectively pivoted at one end to said pins, a common coupling member pivotally supporting the other ends of said links, a reciprocable means, said reciprocable means being connected at one end to said coupling member, a pinion rotatably supported at the other end of said reciprocable means, a stationary rack in mesh with one side of said pinion, a movable rack in mesh with the other side of said pinion and blank pusher means fixedly mounted on said movable rack, whereby as the feed bars move in the advancing stroke, the pins move along the slots in the cross plate pivoting the links about their pins thereby moving the coupling member, the reciprocable means and pinion so the pinion moves the movable rack in the same direction.
Claim 2
Dependent Claim
245 words
In a transfer press of the type provided with a pair of work feed bars for performing a work transfer cycle including clamping, advancing, unclamping and return strokes, a blank feed device for feeding successive blanks to the press from a blank press station during the time period from the beginning of the advancing stroke to the ending of the unclamping stroke of the feed bars said blank feed device including a cross plate extending transversely of said pair of feed bars said cross plate having spaced elongated slots extending longitudinally thereof, pins loosely received in said slots for connecting said feed bars and cross plate together and for slidingly moving along said slots, a pair of links respectively pivoted at one end to said pins, a common coupling member pivotally supporting the other ends of said links, a reciprocable means, said reciprocable means being connected at one end to said coupling member, a pinion rotatably supported at the other end of said reciprocable means, a stationary rack in mesh with one side of said pinion, a movable rack in mesh with the other side of said pinion and blank pusher means fixedly mounted on said movable rack, whereby as the feed bars move in the advancing stroke, the pins move along the slots in the cross plate pivoting the links about their pins thereby moving the coupling member, the reciprocable means and pinion so the pinion moves the movable rack in the same direction.
Claim 3
Dependent Claim
69 words
The blank feed device as set forth in claim 1, in which reciprocable means comprises a rod integral with said coupling member and a tubular member telescopically receiving said rod therein, said rod having an annular groove and said tubular member being provided with a resilient engaging piece engaging in said annular groove to connect the rod and tubular together, with the pinion being supported by the tubular member.
Claim 4
Dependent Claim
66 words
The blank feed device as set forth in claim 1, in which said rod assembly further includes a pair of hollow projections extending outwardly from the opposite sides of said tubular member surround said annular groove of said rod and at least one of said projection having an opening through which said engaging piece engaging in said anular groove by the action of an associated spring.
Claim 5
Dependent Claim
31 words
The blank feed device as set forth in claim 1, in which said device further includes a microswitch to be actuated by a microswitch actuating pin abutting against said engaging piece.
References Cited (Backward Citations)
US3428166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |