Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-09-04
1977-02-15
Jones, Jr., James L.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
040075354
ABSTRACT:
The invention comprises a locking puller for pulling such objects as the inner race of a bearing, gear, or sprocket off of shafts. The puller has three jaws each pivotally mounted to a collar to enable the jaws to pivot radially toward one another to engage such objects to pull such objects off of a shaft. The apparatus has a cam ring with a triangular shape and rearwardly extending braces which are fixed to a rearward ring. The collar has a rearwardly threaded cylindrical portion with a nut threaded onto the cylindrical portion. The nut has an annular groove with the rearward ring rotatably mounted to a nut in the groove. The cam ring surrounds jaws at a location forward of the pivotal mounting of the jaw. The jaws are tapered. The tapered surfaces of the forward end of the jaws have a radius greater than that of the inner surfaces of the cam ring when an object to be pulled is engaged between the jaws, whereby an operator may rotate the nut to move the rearward ring forward thereby moving the braces and cam ring forward until the cam ring engages the outer surfaces of the jaws in a wedging manner to thereby lock the jaws to the object to be pulled. A rod is threaded into the center of the collar which is thereafter rotated to move it forward until it engages the end of the shaft and force is applied to move the rod further forward with the jaws thereby pulling the object rearward towards the end of the shaft.
REFERENCES:
patent: 2303560 (1942-12-01), Knight
patent: 2956336 (1960-10-01), Peterson
Brandt Paul W.
Somerville Dean S.
Jones Jr. James L.
Kleve Robert E.
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