Illustrated and Descriptive Catalogue and Price List of Stereopticons, Lantern Slides, Moving Picture Machines, Accessories for Projection (1902)
W.B. Moore · W.B. Moore: Chicago · leaf 17
a quicV. connection. The part of the connector with the holes or sockets should^ be attached to the supply wire, and the part with the posts or plugs' to^ the wire leading to the machine. When using this connector should' the lamp be burning ‘‘up-side-down’ the current at the lamp can be .… … A curtain is usually hung by a rope drawn tightly over screw hook.^ Frequently it is not possible to make the screw hook firm and then.... much trouble is experienced in drawing the curtain tight. If the rope;. is run over a pulley, the curtain can be drawn tighter and with much.: less strain on…
