← The boy mechanic, book 3, Volume 4
Chapter 230
A Detachable Chair Arm
The children in the home as well as others can make good use of a chair arm which may be attached quickly to an ordinary chair. The wide arm is clamped to the back of the chair by means of a strip of metal fitted with a thumbscrew, and the upright is fixed to the arm by a hinge, making it convenient to store the device. The lower end of the upright is fitted with a metal angle which fits on the corner of the chair.—J. F. Long, Springfield, Mo.