Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1981-07-16
1983-11-15
Crane, Daniel C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29175A, 403157, 74579R, 228155, 228160, 228182, B23P 1500, B23K 3100
Patent
active
044147260
ABSTRACT:
A clevis end connecting rod such as truck lever connection rods, brake cylinder push rods, brake rod ends, etc., utilized on railroad cars, is manufactured by positioning an outside side surface of a metal eye member, having a bore therethrough, transversely against one end of a metal rod, and then the metal rod end is circumferentially welded to the eye member side surface with a good concentric and coaxial uniform weld. Thereafter, the eye member is transversely cut in half, thereby providing a cutting gap which is in line with the axis of the rod. Then this same end of the rod is axially cut to a predetermined depth to provide a bifurcated rod end. The bifurcation is aligned with the cutting gap between the eye member halves, and then the bifurcated rod end is spread and re-shaped to form a clevis end with the bores of the eye member halves being positioned in spaced alignment to receive a clevis pin, thereby eliminating expensive prior art hot forging techniques. As a modification to the method, the eye member may be provided initially in two halves, prior to the step of positioning and welding it to the end of the metal rod. This latter technique is especially useful where a plurality of transverse clevis pin bores are provided in the eye member for adjustable clevis pin connection, thereby requiring a relatively long clevis eye member, which would require considerably more time to be transversely cut in half. The rod end which is welded to the eye member is preferably tapered to provide an annular welding relief between the rod end and the eye member to provide a uniform concentric or coaxial weld prior to the step of making a bifurcation cut into the end of the rod through the weld.
REFERENCES:
patent: 680218 (1901-08-01), Blakeslee
patent: 1067362 (1913-07-01), Miller, Jr.
patent: 1391792 (1921-09-01), Recker
patent: 1470120 (1923-10-01), Schaefer
patent: 1657875 (1928-01-01), Wright
patent: 1784966 (1930-12-01), Johnson
patent: 2019460 (1935-10-01), Mahan
patent: 2458989 (1949-01-01), George
patent: 2512688 (1950-06-01), Skog
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