Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 29
up. Take up about 5 ft. of thewalk and nail it together so as to make atrap door that will work easily. Place asmall spring under one end to hold it upabout !, in. i \. Pig. Ll. Nail a strip oftin along the under Bide of the trap nearthe spring and fasten another strip on thebaseboard, so that they… … Alarm Rings When Caller Approaches When any person approaching the housesteps on the trap the bell will ring andthose in the house can see who it ifore the door bell rings.—Contributed byR. S. Jackson. Minneapolis, Minn. AN OPTICAL TOP One of the latest optical delusions, andone not easy to…
Handicraft · Amusements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
