ig. 2 is an inverted by the threads of the worms. The chains are firmly glass frame is slipped in the plate-holder groove in the bottom view of the device. Fig. 3 represents a section regular manner, and the tri-color frame removed. held up against the worms by thrust-disks bearing of the blind and… … PETTINGILL'S SHUTTER-FASTENER. drum-shaft, but is held in place by bolts passing Then the operator can focus as with an ordinary through the slots and fastened to the adjacent disk. camera, and move the frame, H, backward or forward blind and is composed of only two parts—a plate held a short…
Liquid · Air · Acetylene · Apparatus · Cents · Liquid air · Munn · Static machine · Naval constructor · Scientific American · Draw span · Years ago · American supplement · Fiscal year · Total length · Internal combustion
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