The Bangerter Anniversary Self-Winding Regulator deserves this title because its construction embodies all the principles essential to a Regulator to be the very best time-keeper. “Graham dead-beat escapement” and a pendulum provided with means for keeping its gravity always the same length, overcoming the variation which change in temperature invariably brings about.

Another great improvement is the daily Self-Winding System, winding a weight which is the only means of maintaining an even pull to the delicate works of the clock. Wound by a force which requires attention one minute a year only.

This invention relates to clocks, and particularly that class wherein a pendulum escapement is employed and wherein the clock-train is weight driven.

It is well known to those skilled in the art that the most accurate and reliable clocks are those which are driven by a weight. Most of such clocks are provided with a plurality of weights, one being used to supply the energy necessary to strike the time, and the other the energy for operating the clock-train, and in clocks of such construction they have to be wound frequently, usually either daily or weekly.

Many attempts have been made to produce clocks which will run for a relatively long time without requiring the attention of an attendant to wind the same. In such clocks (other than electrical clocks) powerful springs have been employed, one of such springs being used for time-striking and the other for actuating the clock-train. Clocks of this class designed to run for an extended length of time, such, for example, as period of, say, a year or more, have been indifferent time-keepers, due to the fact that the power of the springs becomes materially lessened during the latter part of the cycle of operations. Therefore, spring-operated clocks, calculated to be run for any great length of time, have been more or less unsatisfactory, and have not gone into very extensive use.

The object of my invention is to provide a clock which will not require the attention of an attendant but once in a long period of time, and which will also be an accurate time-keeper.

A further object is to provide a clock operated by a uniformly pulling weight, the pull of which is not varied by the lifting of said weight.

A further object is to provide a power-storage device and power transmission mechanism and automatic devices connected thereto, whereby the power of said power-storage mechanism is utilized to wind up the clock—that is to say, to lift the clock-train operating weight at certain definitely recurring intervals of time.

A further object of my invention is to provide, in connection with such power-storage mechanism, time-striking means operated by said power-storage device, which being independent of the clock-train operating means does not interfere therewith.

A further object of my invention is to provide a single power-storage mechanism which will afford the power to strike the time and effect the winding of the clock, doing away with two sets of mechanism (one for each purpose), as heretofore used.

A further object of my invention is to provide such a power-storage device that with one winding of the same the clock may be kept running, and also striking the time, for a year or more in duration.

A further object of my invention is to provide means in connection with said power-storage device whereby the winding of the clock-train does not interfere with continuous running and perfect time-keeping of the clock, and does not require any supplemental propelling mechanism for the clock-train during the winding operation.

BANGERTER’S FIRE DETECTOR AND FIRE ALARM.