e object may be pro- tened to secure the tree in place, after which the rear jecting opaque pictures only. Some transparency pro- jected by reflected light alone or by transmitted light connection is swung open and the machine is drawn off. jectors, however, have been provided with an attach-… … the tree which it is desired to move so that the two arms of the frame will IMPROVED PICTURE PROJECTING APPARATUS, straddle the trunk. When the machine has been backed sufficiently to bring the ment whereby the same may be converted into a hoisting drum into contact with the projector for opaque…
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