Lee Valley Tools Woodworking Newsletter
Vol. 3, Issue 2
November 2008
 
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Similar letters refer to like parts throughout the different views of the drawings.

A represents the frame, which may be made of any suitable size, form, and material, but preferably bent to form three sides of a rectangular figure. The outer surface of this frame is formed with a groove a¹ to receive the endless cable B, which passes once and a half around the pulleys C and C¹, the former of which is mounted on a stub-shaft c, journaled in the forks c¹ of the piece D, which piece is formed with a vertical socket to receive one end of the frame A and is provided with a set-screw d, employed to secure the frame in the proper position. The piece D is provided on each side with grooves d¹ to receive the edges of the covering E, which is of similar form to the frame A, or substantially of such form. The pulley C¹ is mounted on a stub-shaft c, journaled in the forks c² on the opposite end of the frame A from that to which the socket-piece D is secured. As shown in Fig. 3 of the drawings, the covering E for the frame is substantially rectangular in shape and has its free edges bent inwardly, so that said covering will encompass the frame. While I have shown the frame and covering therefore rectangular in cross-section, yet I may employ a frame and covering of any desired shape. The stub-shafts c are each provided in their free and inner ends with slots c³, which terminate in enlargements c4 to receive the blade F and enlargements f on the ends thereof. The cable B, as shown in Figs. 2 and 5 of the drawings, is passed once and a half around each of the rollers or pulleys C and then passes up and over the frame A and has its strands crossed, as shown in Fig. 5 of the drawings, on the upper portion of the frame. Secured to one of the stub-shafts c, and usually that one located in the socket-piece D, is a handle G, which is used for forcing the saw back and forth through the material to be sawed and is also employed for turning the blade to the desired position. The covering E may sometimes be omitted, and in the event of the cable becoming slack that end of the frame A extending into the socket-piece D may be moved outwardly until the cable is made taut and there held by means of the set-screw d, which is employed for this purpose.

The operation of my saw is simple and as follows: The enlargements f on the ends of the blade F may be inserted into the enlarged openings c4, near the ends of the stub-shafts c, in which position the said blade will be held by reason of the tendency of the ends of the frame to spring outwardly. After the blade shall have been thus fixed in the stub-shafts it may be turned to any desired position by turning the handle G, which will cause the pulleys C and C¹ to rotate by reason of the cable or cord B, which connects them.

 
 
                   
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