Portable power saw
Abstract
Abstract 585,297. Reciprocating-saw machines. MOULDER, G. J. HAY-. Feb. 16, 1945, No. 3908. [Class 145 (ii)] A portable mechanical saw comprises a base A of suitable size and shape to give a firm bearing on the material to be cut, e.g. plywood, a saw-blade E which cuts on the upward stroke and which works between or slightly forward of two vertical guide-bars B arranged close together at one end of the base, two grooved bearing blocks C slidably mounted one above the other on the bars B, the saw-blade being carried by the blocks, and a pitman I connected to the top block B and to a crank-pin on a disc G fixed to a shaft F adapted to be coupled to a power-driven member such as an electric drill, or to be driven directly or through gearing from a built-in electric motor. As ari alternative to the pitman I, a pin on the disc G may engage a transverse slot in a member attached to the blocks C. A secondary shaft may be geared to the shaft F the power-driven member being coupled to either shaft. Adjustable blocks H may be provided to steady the saw.
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