Handy man's workshop and laboratory . wo ends may be left projecting, asshown at H, for connection to two handles or electrodes, andthe coil may be protected by a final wrapping of paper, as shownat C. One pole of a dry battery E is connected to the tang of a largetile F, and the other to one of the primary terminals D. Theremaining primary terminal G is then lightly dragged along the•surface of the file, thus making and breaking the circuit in rapidsuccession as the wire passes over the teeth. If the shocks re-ceived from the handles are too strong, use a longer piece of wire \ ^V_r c y^j r e
Handy man's workshop and laboratory . wo ends may be left projecting, asshown at H, for connection to two handles or electrodes, andthe coil may be protected by a final wrapping of paper, as shownat C. One pole of a dry battery E is connected to the tang of a largetile F, and the other to one of the primary terminals D. Theremaining primary terminal G is then lightly dragged along the•surface of the file, thus making and breaking the circuit in rapidsuccession as the wire passes over the teeth. If the shocks re-ceived from the handles are too strong, use a longer piece of wire \ ^V_r c y^j r e 3 £7 G ^ 17 —;-j- ^wtk Fig. 208—A simple medical coil 252 HANDY MAN S WORKSHOP AND LABORATORY at G; if too weak, add another dry battery in series, or put morewire on the secondary.—95 AN EASILY MADE MAGNETO MACHINE FOR PHYSIOLOGICAL EFFECTS As one of the diversions of an evenings entertainment for acompany of young folk there is perhaps nothing that will con-tribute so much to the general enlivenment as some means of. Fig. 209—A magneto machine of simple construction giving electric shocks. Of the various devices for producingshocks nothing is more convenient and satisfactory than themagneto machine. A simple magneto-machine of novel construction designedespecially for physiological effects is here described. Fig. 209shows the completed machine. Fig. 210 gives details of con-struction. HANDY MAN S WORKSHOP AND LABORATORY 253 Four ordinary 5-inch horseshoe magnets, d, are clamped in abundle with their like poles in contact upon a horizontal brassshaft, a, 3/16 of an inch in diameter. The magnets are held, twoon each side of the shaft, by clamping plates, b, of thick sheetbrass, drawn together against the faces of the magnets by smallbrass machine screws. At their butts the pairs of magnets bind directly upon theshaft; at their open ends they clamp upon a rectangular strip ofNo. 22 sheet brass, c, half an inch wide, soldered transverselyupon the shaft near the en
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
