US1008634A - Time-controlled switch. - Google Patents

Description

G. W.'FREE. TIME CONTROLLED SWITGH.

APPLICATION FILED FEB. 15, 1911.

1,008,634, Patented Nov. 14, 1911.

Y m Y L UNITED STATES. PATENT OFFICE.

GEORGE FREE, OF ST. LOUIS, MISSOURI.

TIME-CONTROLLED swrrcn.

Specification of Letters Patent.

Patented Nov.-14, 1911.

Application filed February 15, 1911. Serial No. 608,821.

To all whom it may concern:

Be it known that'I, GEORGE W. FREE, a citizen of the United States, residing at the city of St. Louis, State of Missouri have invented certain'new and useful Improvements in Time Controlled Switches, of which the following is a specification.

This invention relates to improvements in automatically-operated switches for controlthe claim.

tive i'iow, on an enlarged scale, of the switch'operating member.

In carrying out the present invention an ordinary alarm-clock '1 having the usual time winding and setting shafts 2 and 3 and the usualv alarm winding and setting shafts 4 and 5, respectively, is used. A bracket. (3 is preferably formed of a metal plate that may he cut and bentinto the desired shape by means of a. sheet-nietal press (not shown) or other suitable means and is fastened to a. board 7 or piece of' slate or other insulating material by screws 8, or the like. The part i) of bracket (3 projects outwardly from the board 7 and forms a seat for the clock 1, being preferably concaved to conform to the curvature ofthc base of said clock. Said part 9 of bracket (3 is cutaway at 10. so as not to use more metal than is absolutely necessary for the purpose of supporting the clock 1. and contains a pair of elongated notches 11 to'allow the feet 12 of clock 1 to extend thcrethrough, said notches extending substantially parallel to each other and being formed in the front edge of the part 9, so that the clock can he slid into place.

A spring 13'is secured to the upper part of board 7 by means of one-of thebolts 14,

which support said board, and extends over' the top of the clock 1, the end 15 of said'eo spring being bent downwardly to hookover the upper edge of the face of the clock 1, so

as to hold said clock "firn'ily in place on bracket 6. place, the end 15 of spring 13 is raised sufficiently to allow the top of the clock-to pass therebeneath when the clock is slid into place upon the bracket 6, and, when it is desired toremove the'clock, the end 15 of spring 13 is raised sutticiently to disengage the clock, thereby allowing the clock to be withdrawn from the bracket 6; The bolts 14 are secured In order to set the clock 1 in y to a b0ard'16 or piece of slate or other insulating material, and pass through spacing r sleeves 17, or thelike, by means of which the boards 7 and 16 are spaced apart. The

board 16 is preferably square and is fastened to the wall 18 or other support by screws 19, or the like. The advantage in using an octagonal board 7 and a square board 16 is that'access to the screws. 19 can be had at all" times in order to attach the board 16 to or remove same-from'the wall 18, without thenecessity of having to disconnect the board 7 fronr the board 16. An ordinary cut-oft or snap switch 20,-which controls the circuitof the electriclamp 0r lamps (not shown), is fastened to the board 16 by any suitable means and. its button 21 projects into an opening 22 in board 7.

The alarm-winding shaft 4 of the clo'c'k'l is screw-threaded to receive a lock-nut or lock-nuts 23 by means of whichv a member 24 is rigidly fastened to shaft 4, said member containing an opening 25 to allow said shaft to pass therethrough. It is preferable to use two lock-nuts 23 and to solder same to shaft 4 after same have been tightened against the member 24Ywhich. is located thcrebetwecn. The member 24 is preferably made of a piece of sheet-metal that may be readily formed into the desired shape by means of a sheet-metal press (not shown) or other suitable means. The ends 26 of the l ing 22 in'board 7 and'embrace the button by turningmember 21 of switch 20 in such manner as to cause said button to revolve with shaft l, when said shaft is released to rotate at the time at which the alarm is set. In order to allow the button 21 to enter the space between the two ends 26 of member 24: the edges of ends are A stop-pin 27 and a stop pin 28 are attached to the back of the clock 1 and are located in the path of movement of the arm 29 borne by member The stop-pins 2? end 28 limit the movementof the arm .29 so that the alarm shaft 6t elf-clock l is allowed only to rotate through in e proper part of a revolution that is necessary to revolve the button 21 of switch 550 to a position to turn the circuit oil. W lAGEl the shaft 4 is rotated by revolving member in s clockwise direction, Fig. 3, so as to move the arm 29 from stop-pin 27 to stoppin 28, and the button 21 of switch 20 is rotated to turn the circuit on, the member 2% holds the ends 26 in position to embrace the hutton 21, when the clock 1 is placed. in the proper position upon bracket '6, as herein: above described. When the alarm-Winding shaft 4: is released to rotate at s time at which the circuit is to be closeo, some rotates in s counter-clockwise dir lion, ,l ig. 3, and tl'1ereby'moves zi'rin 29 from stop-pin 28 to stop-pin 27, with the result that the ends 26 of member 24 rotate the hutton 21 of switch 20 suiiiciently to turn oil' the cir cuit.

It should be understood that by changing the positions of the stop-pins 2 7 and 28 and the member 24 the device can be used autoniaticslly a turning the circuit on predetermined time.

The operation of the apparatus largely evident from the above description, t may be summarized as .follows: The time at Which the lamp or lamps in circuit with. the switch 20 shall be ezitiiigsished is set in the usual manner by the alarm-setting shaft 5, and the alarm-Winding shaft dis rotated 24 so that arm 29 moves stop-pin 28. After the button 21 of switch 20 is rotated to the posi' tion to turn on the circuit, the clock 1 is set in. position upon bracket 6, as hereinabove described. When the alarm shaft 4: is re from stop-pin 27 to to protect Y leased same returns to its normal position and causes the ends 26 of member 24: to revolve the button 21 switch 20 to the proper position to turn ed the circuit and thereby to extinguish the lamp' or lamps automatically.

From the foregoing description of this invention, it will be evident that a simple, efficient, and inexpensive device is provided, its adaptation to an ordinary snap or cut-oil SWlECh now in general use being particularly i advantageous for automatically extinguishing' an electric lamp or lamps, Whichmay be used to light show cases, stores, 'olfice buildings, etc, for a predetermined length of time during the day or night. Thus the necessity of employing personal service for turning ofi the circuit, as is customary, is obviated.

I claim:

lln a device of the type set forth, in combination with a clock having an alaim-winding' shaft, a board for attachment to a support, a switch attached to the board and having a ievoluble button, a second board extending over the front face of the switch same and being rigidly secured to the first named board and being formed With an opening to receive said button, a bracket on the second named board to support the clock base, a' central spring arm having a down-turned end signature in the presence or" two Witnesses.

GEURGE W."FREE. Witnesses Gmors WALTON, GEORGE G. ANoEssoN.

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