, supported as shown, and around the pulley on the with tongues fitted to the grooves of the board, a screw being inserted in the clamping pieces for drawing screw. The screw is rapidly revolved, and the frame by which them into contact with the edges of the board, as shown it is supported is… … SIMPLE BACK GEAR FOR FOOT LATHES. lathes. Of course, there is a limit to the size Fig. 2.-SIMPLE ARC LAMP FOR PROJECTION. of work possible with a light lathe, even mer until the threads engage the periphery of the though provided with back gear, the limit being de- helix of sufficient size to…
Patents · Munn · Tripod · Patented · Scientific American · Solder · Wrought iron · Natural gas · American supplement · Express money · Tripod head · Address munn · Screw cutting · Test tubes · Letters patent
Internet Archive · Public domain (published before 1931). Free to use for anything.
