Page:The making of a man (1902).pdf/65

 beneath the stump, where they are securely held in place by pressure of the stump. Price $20.

No. 305 represents a stump after an amputation of all the fingers and thumb, and No. 306 an artificial wooden hand for same, with stationary fingers and articulated thumb with a powerful spring to be opened with the assistance of the sound hand. Price $40.

Rubber Hand

With the assistance of the other hand, or by pressing against some resisting body, the ductile rubber fingers of the hand No. 307 may be changed in position to suit the needs of the wearer as shown by the dotted lines in the illustration. For those who prefer the rubber to the wooden hand it will be furnished with any of the arms we make. It can be attached permanently to the forearm, detachable at the wrist, with provision for using a hook of other implement in place of the hand, or furnished with a palm socket and lock for the use of hook, knife, fork, etc., without removing the hand. See No. 308.

Connections

No. 309 represents a new method for connecting the hand and arm. Heretofore the devices in use could not be absolutely relied upon to keep the hand or tools in place. It mattered not how strongly the fingers were made for lifting heavy weights, the customary spring or set-screw used for locking this connection was liable to loosen or give way without warning and cause much annoyance, if not injury. On the hand plate two studs are riveted, the heads of which pass into keyholes in the arm plate. With a slight turn of the hand the heads pass into the slots of the keyholes, bringing the heads of the studs under the arm plate; they are kept immovable with a spring that automatically slips into a slot in the edge of the plate;