Prices, Nos. 319 and 320 (See page 66)
With wood or rubber hand, permanently attached
to forearm, no provision for tools, and without attachment above the elbow $30.00
The same with attachment above the elbow 35.00
Rubber hand, not detachable at wrist, but with
palm socket, including knife, fork, hook, and brush, without attachment above the elbow, 35.00
The same with attachment above the elbow 40.00
With wood or rubber hand, detachable at the
wrist, including knife, fork, hook, and brush, without attachment above the elbow 40.00
The same with attachment above the elbow 45.00
No. 321 represents arm for amputation below
the elbow, leather socket and leather lacer above
the elbow, both reinforced with steel frame, connected
at elbow with steel joint straps.
No. 322 is a detachable wooden hand, with rigid fingers and movable thumb. A traction rod for opening the thumb with motion of shoulder is shown in the illustration; a web strap is buttoned to the upper end of the traction rod and passes over opposite shoulder, as shown in No. 326, page 70. Any motion of the shoulder that will draw on this rod will open the thumb, and when the tension is released a strong spring in the thumb brings it back in contact with the first finger. For single amputations there is little or no advantage in having this attachment put on; it necessarily requires more complicated and expensive mechanism, without any practical gain to the wearer. For double amputations something of this kind must be depended upon for assistance, and to obtain the greatest benefit from artificial arms, means similar to this for operating the movement of the thumb are absolutely required. One or more movable fingers in conjunction with the thumb may be operated in the same manner.
