Mechanics for young America; how to build boats, water motors, wind mills, searchlight, electric burglar alarm, ice boat ..etc.; the directions are plain and completeReprinted from Popular mechanics . Fig. 2). Nail or screwthe buttons to the table as shown at Fig. 5with the wires underneath. The connec-tions are simple: I in Fig. 5 is a wire run-ning from one end of the table to the otherend, attached to a post at each end; each bell if preferred.—Contributed by Vin-cent de Ybarrondo, 1148 W. 25th St., LosAngeles, Cal. HOW TO MAKE A TELEGRAPH IN=STRUMENT AND BUZZER The only expenditure ne
Mechanics for young America; how to build boats, water motors, wind mills, searchlight, electric burglar alarm, ice boat ..etc.; the directions are plain and completeReprinted from Popular mechanics . Fig. 2). Nail or screwthe buttons to the table as shown at Fig. 5with the wires underneath. The connec-tions are simple: I in Fig. 5 is a wire run-ning from one end of the table to the otherend, attached to a post at each end; each bell if preferred.—Contributed by Vin-cent de Ybarrondo, 1148 W. 25th St., LosAngeles, Cal. HOW TO MAKE A TELEGRAPH IN=STRUMENT AND BUZZER The only expenditure necessary in con-structing this telegraph instrument istwenty-five cents for a dry cell battery, pro-viding one has a few old materials on hand. Procure a block of wood about 6 in. longand 3 in. wide and take the coils out ofan old electric bell. If you have no bell, onemay be had at the dealers for a small these coils on the blocks at one endas shown in Fig. 1. Cut a piece of tin 2 in. long and y2 and bend it so the end of the tinwhen fastened to the block will come justabove the core of the coil. Cut anotherpiece of tin 3 in. long and bend it as shown POPULAR MECHANICS 85.
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Keywords: ., bookcentury1900, bookdecade1900, bookp, booksubjectindustrialarts
