From the Dec 1941 ish of Mechanix Illustrated, a jim-dandy shop project to make Junior his own dowel-firing machine-gun!
ANY small boy will want, and be delighted with this toy submachine gun, which holds fifteen shots in the magazine and fires them continuously, until empty, as the "tromboning" action is worked. Made entirely from wood, simple of construction, and employing no "hard to get" parts, this gun would make an excellent mass production product for any guild club doing such work for gift or sale.
The body of the gun, housing the mechanism, is built up on the side plate having the projection to which the magazine is secured. If the modeler makes up a set of full sized drawings of all the parts on light card or heavy paper and makes cut-outs from them, much of the fitting and adjusting may be done before actually cutting the parts, from wood. This minimizes the chance of error caused by working from small drawings.
The short dowels which project through the firing pin and cocking bar should slide freely, but not too loosely in the tracks formed by the small rippings, which are bradded and glued to the side plates. Punch pin holes through the full sized drawing of the side plates, at the exact location of these rippings so both plates are identical.