LONDON: J. & A. CHURCHILL.
DIRECTIONS FOR USING THE
HAMMOND
Wall Cabinet
MANUFACTURED BY
THE WAITE & BARTLETT MAN’F’G CO.,
143 East 23d Street, New York.
TO USE THE GALVANIC CURRENT.
To use the galvanic current place the ends of the conducting cords in the two binding posts marked 13-13. Place the socket of current selector (20) on the pin marked O, and turn the lever of selector on pin No. 1, or on any number, according to the number of cells desired; at the same time see that all the switch levers are on their blank buttons, except the one at left of current selector, which should be on its left-hand button marked Constant.
If it is desired to use cells from any other part of the series, place the socket on the pin from which it is desired to begin, and having previously moved the lever ahead of this pin move it along until the desired number of cells intervenes between socket and lever. The number of cells in circuit when the socket is not on O, but on a pin with a number, is the difference between the number of the pin and number on which the lever rests, for instance, if socket is on pin 12 and lever on pin 22, then 10 cells are being used, the starting point being 12 cells from any part of the series may thus be brought into the circuit. If socket be placed on pin 39 and lever on pin 40 then the 40th cell would be in use only.
Always keep the socket on the lowest number and the lever on the highest, as putting socket ahead of lever would reverse the current.
Should, through any accident, a cell become disconnected or run down, or should it get out of order from any cause, it is only necessary to short-circuit the cells and throw the milli-ampere-meter in circuit by adjusting the switch 10. By placing the socket on the pin marked O and selecting cell after cell with the lever, the defective cell is easily found by the milli-ampere-meter failing to deflect when the pin corresponding to the defect is reached.
TO OBTAIN THE INTERRUPTED GALVANIC CURRENT.