Bisbee daily review., 1922-10-08
NEW SYSTEM TO CHARGE BATTERY
 IN EIGHT HOURS
Local Garage Owner Installs Unit of Interest to
 Motoring Public

The installation of an Industrial Constant Potential Battery charging system, by Frank Thayer's Garage of Lowell, will be of interest to the mot bring public of tine Warren District. This system is unquestionably the greatest advance of recent date in the | battery world. From the standpoint
 Of economy, efficiency and above all -service-it is undeniably in a class | by itself As it's name indicates this system delivers a constant voltage to each battery at all times. This feat
 ure is fundamentally necessary and 1 makes possible the charging of bat 1 teries, at minimum of time. Time | spells service to the car owner and the Constant Potential reduces the : time to approximately eight hours, 1 thus giving the customer his battery | eight hours after being received, and | saving him all rental charges on bat | teries.
 | The Industrial Constant Potential 4
 motor, two generators, mounted on a | single shaft; Q main control panel | board, consisting of an automatic cut
 out, two Calibrating Rheostats, two i volunteers, and two armeters. The | Calibrating Rheostats are provided to i enable the accurate setting of the vol tage at all temperatures. The geneT-
 ators are so designed that they main | tain a constant voltage, regardless of i the load conditions, except variations due to changes Of temperature. The \ Calibrating Rheostats are adjusted to compensate temperature changes. The
 automatic cutout is provided to dis,
 connect the batteries from the gener
 ator when, for any reason the voltage
 of the generators is not sufficiently
 high to charge the batteries. This
 cutOut is identical in purpose and op
 eratiOn to the conventional type of
 cutout used @n automobiles. It is de | signed to close at ' 12 volts on eacE generator, and open when the voltage of either or both generators drops tC volts.
 The batteries to be charged are con
 nected in parallel, andthe voltage be ing practically the same across eacf battery, the charging current will di vide in direct proportion to the re
 sistance of each battery, which is tho | same as charging EACH BATTERY
 SEPARATELY, or in other words. 6 heavy value for a start depending or the state of discharge of the batteries and a lesser value at the completion of the charge. That is, each battery will receive all the current it needs and ore. to charge it in the quickest time possible to capacity, without heating. and no harm can be done by leaving it on after it has become fully charged
 The charging current must be reg ulated to suit tN' lesser plate batter ies. or tEe deteriOrating effect of heat
 ing the battery will have g tendency
 to loosen the active material aud buc iIle the plates Also. the larger bat tcries are not receiving the ful amount that they should, tlAreby talk ing longer tC change Even if all bal teries were of the same size, it is al most cei tain that their state Of charge will not be the same; in which cast | they must receive the same voltage whether they require it or not Henc the advantage Of the Potential systen Each battery receives separately jus