This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
The sketch shows a handrail clamp, or holding device, which is detachable, for use on stone stairways in the winter when there is ice or snow on the steps. The clamps are made of 3/16-in. strap iron, of any desired width, conforming to the shape of the balustrade and provided with a hook at either end. To the inside end of the band an upright is riveted and to this upright is riveted an ordinary handrail holder to take the handrail. A heavy thumb screw allows the clamp to be fastened firmly to the balustrade at the outside.
This is a simple and inexpensive device which affords protection against falls. - Contributed by John De La Mater, Chicago, III.