Other, List of Push-Button and Electric Appliance Manufacturers from Hart Manufacturing Company, February 3, 1917

February 3, 1917. The following list of push-button< and electric appliance manufacturers was copied from a book in the office of the Hart Mfg. Company. Possibly we are in communication with all of these people now, but there may be some new names. Frank Adams Electric Co., St. Louis, Mo. Mfg. of Switch boards. Norton Electric Instrument Co., , Manchester, Conn. Mfg. Ammeters and other electrical instruments. Patrick & Wilkons, 51 N. 7th St. Philadelphia, Pa. Mfg. of añnunciators and other electrical indicating devices. These people supply the United States Navy with annunciators for use on battle ships. This was one of the apparatus suggested for illumination by Mr. Castle of the Steam Engineering Department of the United States Navy. Minerallic Electric Company, 1043 Washington Blvd., Chicago, Ill. Mfg. of Altman table push buttons and electric watchman's signals. I noticed all the New England trolleys are equipped with Westinghouse air gauges which are manufactured by the Standard Gauge Mfg. Company, Syracuse, N. Y. The application of Radium Luminous Material to these dials would be very practical according to may conversation with several motormen, as it is nee- essary for them to keep their eyes constantly on these indicators. Some of the cars have them set on top of the control handle directly beside the motorman's hand.