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 very satisfactory electric score board, for use in scoring basketball and other games played indoors, is shown in the illustration. It is constructed entirely of wood, but should be lined with asbestos board or sheathing. The dimensions are a matter of choice, but one 4 ft. long, 2 ft. wide and 18 in. deep is a good size. The back of the box is provided with two cleats, each 2 1/2 ft- long, fastened at each end. This allows a projection of 3 in, at the top and bottom, for fastening the score board to the wall. The manner of construction is shown in Fig. 1, and a cross section of the box, in Fig. 2.
The front of the box should be fastened with screws so as to make its removal easy in case of repairs. This part of the box carries the frame for inserting the numbers and the words "Home Team" and "Visitors," as shown in Fig. 3. As the words are a permanent fixture, the cards carrying them are fastened to the front. At the end of these words a frame is constructed as shown in Fig. 4, in which the cards having the numbers are inserted in slides.
Numerals and letters can be cut out of heavy cardboard or tin. The design of a letter having sharp angles and straight edges, as shown in Fig. 5, is very easily cut out with a chisel. The method of cutting is shown in Fig. G.
As portions of the letters and numerals, such as the center in an O, would fall out if cut entirely around, some way must be provided to hold the parts in place. The way to prepare stencils is to leave a portion uncut, which is known as a tie, and the letter will appear as shown in Fig. 7.
Ill: Electric Indoor Score Board, Showing Its Construction and Manner of Cutting Out the Letters and Numbers
The best method for making these letters and figures is to cut out the letter entirely, then to paste thin paper over the back and replace the parts removed by the cutting in their original position. - Contributed by James M. Kane, Doylestown, Pa.