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176,064
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Apr. 11, 1876
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Screw Cutting Machine
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Charles W. Roberts |
Cohoes, Albany County, NY |
Abstract:
The object of this invention is to improve the construction of the machine known as The G. W. Roberts Pipe Cutting and Threading Machine and Vise, so as to make it more convenient in use and more effective in operation. The invention consists in the pivoted bar, the hand-screw, the swiveled spider, the setscrew, and the two hooks, in combination with each other, and with the gear-wheel and its hollow or die-holding hub in the combination of the sliding plate, the knife, the stationary nut, the swiveled screw, the worm-gearing, the box or block, the spider, and the adjustable stop-bar, with the gear-wheel and the vise; in the combination of the hand-screw, the grooved projections, the tongues, and the set-screws, with the stationary frame, and with the frame that carries the operating mechanism; in the means whereby the hollow hub of the large gear-wheel is held or secured in its bearing and yet adapted to be readily detached when required; and in the adjustable pipe-holder and the set-screws, in combination with the square cavity of the hub of the gear-wheel and with the vise.
Claim:
The combination of ring as and screws 2 with the rabbeted hub Q and its bearing P. |