Woodworking – Special-work machine – Combined
Patent
1976-02-20
1978-01-31
McGehee, Travis S.
Woodworking
Special-work machine
Combined
144 92, 144133A, 144309R, 144321, 144326R, 408 24, B27C 904
Patent
active
040710602
ABSTRACT:
An upright main frame is provided with horizontal rails extending transversely through the frame to form a travel path for crossties. A pair of motor driven adzing heads are supported below the crosstie travel path for forming rail seats on the depending surface of the crosstie as it moves through the machine. A boring tool frame, including longitudinal horizontally disposed beams, supporting a plurality of motor driven boring tools, is vertically movable within the frame for forming rail spike pilot holes in the crossties. A carriage frame is horizontally supported by the main frame for to and fro reciprocating movement below the plane defined by the upper limit of the crosstie supporting rails. Dogs, pivotally secured to the carriage frame, move the crossties along the travel path in a step-by-step fashion by the carriage frame movement. A motor driven sequence control shaft, extends longitudinally through the main frame and is connected by an eccentric and pitman arm with vertically reciprocable main frame end panels connected with the boring tool support beams for raising and lowering the boring tools. Cams, secured to the control shaft, engage cam plates secured to carriage frame movement control tubes, to reciprocate the carriage frame in unison with the boring tool action on the crossties.
REFERENCES:
patent: 1195852 (1916-08-01), Purdy et al.
patent: 1686915 (1928-10-01), Lane
patent: 2593744 (1952-04-01), Gillespie
patent: 3263718 (1966-08-01), Carmichael et al.
Bray W. D.
McGehee Travis S.
Rhea Robert K.
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