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.
A holder that is especially adapted for use in hanging umbrellas for display in a store can be easily made of a piece of wire wound in a coil, as shown in the sketch, to fit over the end on the umbrella stick. The coil at one end of the spring is formed into a hook so that the umbrellas may be hung in screweyes or on a line, as the case may be. The end of the umbrella is stuck into the spring, as shown, which grips it tightly. - Contributed by Abner B. Shaw, N. Dartmouth, Mass.