Edison-Leland battery

Edison-Lalande Battery.

Stress is laid on the extremely low and constant internal resistance of the Edison-Lalande cell. It is claimed, also, that the electromotive force is constant during the whole life of the battery and that there is entire absence of polarization or local action.

Edison-Lalande Battery.

The battery is light and compact and easily set up. The caustic potash for making the solution is sent out with the battery, doing away with all of the trouble and difficulty of securing pure sal ammoniac. When once the cell is set up it runs itself and very little inspection is necessary. There is, it is said, no creeping of salts, no corrosion of binding posts nor uneven eating away of the zinc, and when the cell is exhausted the operation of renewal is a very simple one.

The latest type of Edison-Lalande telephone cell (type X) is shown in Fig. 1. The cell is a square, vitrified porcelain jar, with a partition in the middle, and is made to fit into the battery box under the telephone transmitter.

The larger type of Edison-Lalande battery (type R, Fig. 2), has been used by a large number of telephone companies throughout the country with excellent results in connection with what is known as the common battery speaking-tube installation. In this system the transmitter and telephone are directly in series. No induction coil is used, the battery power for the transmitter being furnished by special wires which are run from one set of batteries to every instrument connected with the system. The New York and New Jersey Telephone company has one station at Morris Plains Insane Asylum equipped for 60 instruments, and the service from this plant has been extremely satisfactory. This battery is specially adapted to this kind of work on account of its low internal resistance, thus cutting down the trouble from cross-talk.

These batteries are manufactured by the Edison Manufacturing company, New York.