Pock′et-a-larm′.
A device worn like a watch and having a chain attached to the hook at its upper end. A pickpocket, in pulling the chain to abstract the supposed watch from the pocket, will turn the springwheel whose projections will actuate the hammer and sound the alarm on the bell. a is an elevation and b is a vertical section of the device. In c, the alarm is attached to any article and also to the pocket. When an attempt is made to abstract the article, the trigger is tripped and the hammer falls upon and explodes the cap. The shell of the device is of such form and size as to be conveniently carried in the pocket. The hammer is capped and cocked by an independent lever, and the working parts do not project beyond the outside shell. |
| Pickpocket Detectors. |
