Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Pickpocket Detectors. chain to ab- Fig. 3860. stract the sup-posed watchfrom the pock-et, will turnthe spring-wheel whoseproj ectionswill actuatethe hammerand sound thealarm on thebell, a is anelevation andJ is a verticalsection of thedevice. In c, thealarm is at-tached to anyarricle and al-so to the pock-et. When anattempt ismade to ab-stract the ar-ticle, the
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Pickpocket Detectors. chain to ab- Fig. 3860. stract the sup-posed watchfrom the pock-et, will turnthe spring-wheel whoseproj ectionswill actuatethe hammerand sound thealarm on thebell, a is anelevation andJ is a verticalsection of thedevice. In c, thealarm is at-tached to anyarricle and al-so to the pock-et. When anattempt ismade to ab-stract the ar-ticle, the trig-ger is trippedand the ham-mer falls upon and explodes the cap. The shell ofthe device is of such form and size as to be conven-iently carried in the pocket. The hammer is cappedand cocked by an imieiiendent lever, and the work-ing parts do not project beyond the outside shell. Pocket-book. A leathern receptacle, dividedinto cumpartnients for bank-notes, etc., and of shapeand size suitable for carriage in the pocket. It hasan exterior flap, usually secured by a tongue and PoRTE-MOXNAIE. Pooket-knife. A knife having one or morepivoted blades, which shut within the handle, andare held firm by the back, which constitu
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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
