Advancing material of indeterminate length – By intermittent material-mover – Adjustable feeder
Patent
1977-05-09
1979-08-07
Stoner, Jr., Bruce H.
Advancing material of indeterminate length
By intermittent material-mover
Adjustable feeder
74 8921, 414 14, B65H 5118, B65H 5132
Patent
active
041635140
ABSTRACT:
An adjustable feed mechanism is disclosed to feed elongated stock to a machine, for example, elongated bar stock to a machine tool, so that successive parts may be machined in the machine tool, cut off, and then a new length of bar stock of the proper length fed to the machine tool for the next cycle of operation. The adjustable feed mechanism includes a stock pusher to push the bar stock to the spindle of the machine tool and an actuator means is provided, such as a spring urging the stock pusher forwardly as controlled by a stock feed cam and cam follower. A cable pulley is journaled on an arm moved by the cam follower to have a constant length stroke. A flexible cable is connected to actuate the stock pusher and encompasses part of the cable pulley and then has a variable anchor on an involute curve as a fixed anchor point on the frame of the machine. By changing the anchor point along this involute curve a continuously variable amount of feed of the bar stock is achieved with a constant forward feed position of the stock pusher. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
REFERENCES:
patent: 2763365 (1956-09-01), Pulman
patent: 2779590 (1957-01-01), Seastrom
patent: 3814299 (1974-06-01), Spercel
patent: 3917143 (1975-11-01), Yourkievitz
Eisenhart, L. P. A Treatise on the Differential Geometry of Curves and Surfaces, Athenaum Press, Boston, 1909, pp. 43-47.
Acme-Cleveland Corporation
Stoner Jr. Bruce H.
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