US962307A - Electric time-switch. - Google Patents

Description

c. E. BUNKER. ELEGTRIO TIME SWITCH. APPLICATION FILED SEPT. '16, 1909.

Patented June 21,1910.

IIIIIIIIIIIIiIIIIIA QWMo t G. E. BUNKER.

ELECTRIC TIME SWITCH.

nrmonzon FILED sEi 'r.1s, 1909.

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CAREY E. BUNKER, OF OREGON, MISSOUIR ELnc'rnic TIME-SWITCH.

Specification of Letters Patent. Patented J ne 21, 1910.

Application filed September 16, 1909. Serial No. 518,054.

To all whom it may concern:

Be it known that I, CAREY E. BUNKER, a

" citizen of the United States, residing at Orehe to gen, in the county of Holt and State of Missouri, have invented certain new and useful Improvements in Electric Time-Switches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in electric time switches.

One object of the invention is to provide means for automatically turning on and olt an electric switch at a predetermined time. 'Anotherf object is to rovide a simple and roved electric switcii mechanism adapted applied to and actuated by the hour hand shaft of a clock works whereby the switch will be operated at the proper time, means being provided whereby the operating devices may be easily adjusted-or set from the outside of the clock to actuate the switch at any'desired time.

With. the foregoing and other objects in view, theinvention consistsof certain novel features oficonstruction, combination and arran ement of parts, as will be more fully descri d and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a front View of a clock having my invention applied thereto; Fig. 2 is a side view of the same, partly in section; Fig. 3 is a cross sectional view on the line 38 of Fig. 2, showing the switch in an operative position; Fig. {is a similar view showing the switch in an inoperative position, just after having been released; Fig. 5 is a detail view of the stationar contact plate of the switch, showing the manner in which the same is connected to its base of insulating material.

' Fig 6 is a detail view showing another form of connection for the contact plate. Fig. 7 is a similar view showing a modified construction of the connection shown in Fig. (3. Fig. 8 is a detail perspective view of still another form of connection for the contact plate.

Referring more particularly to the draw- F in s, 1 denotes a clock which may be of any suitable construction, to which are connected the terminals of an electric circuit. terminals of the circuit may be connected to the clock in'any suitable manner and in the Thepresent instance I show theclock as being provided on one side with a screw plug 2 having in its outer end a contact late 3 which is connected by a short con ucting wire 1 to a contact plate 5 arranged within the casing of the clock. The shell of the plug and the clock casing and metallic parts thereof serve as the other conductor .or the circuit, whereby the electric current is carried to-the movable member of the switch, hereinafter described. The stationaryimemher or contact plate 5 of the switch consists of a flat metal plate of suitable size having on one end an extension 6 in which is arranged a binding screw 7 to which the circuit wire4 is connected.

The contact plate 5'is loosely connected to ablock or base 8 of insulating material, preferably by securing to the underside of the plate a rock shaft 9, the ends of which project laterally a short distance beyond the oppositc edges of the plate, as shown. The I shaft 9 is mounted in a groove 10 formed in the base 8 and is loosely secured at its opposite ends by washer plates 11 and screws 19..

a This form of mountlng for the contact plate 5 15 clearly shown in Fig. 5 of the drawings.

7. In Fig. 8, is shown another modified form of contact mechanism, in which the In Fig. 0,

plate 5 is provided with a rock shaft 9 and is loosely held in position at its ends by headed pins S)" which engage holes 9 formed in the plate, asshown.

Pivotally mounted at a suitable point on the casing or frame of the clock, is a mo'v able switch member 16 comprising a spring metal bar 17 on one end of which is formed a rectangt'ilar head 18 having at one corner an operating lug 19 and having formed thereon a curved longitudinally extending stop arm 20. On the free end of the bar 17 is arranged a contact block 21 which, when the switch member is moved back and forth, is adapted to be brought into and out of enson 5; 5145;;

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to the desired adjustment for actuating and releasing the switch' member in the manner described. It will 'be understood that the operating pins 27 and 28 on the gears 22 and ,23 are arranged almost opposite to the indicating fingers 26 on the outer ends of the shafts 24: of the gears so that when the gears are turned by the setting wheels ll and 42 to bring the indicating fingers 26 to the desired position on their dials, it will be known that the operating pins on the gears are in the proper position for turning on or off the switch at the desired time. By providing the spring bearing arms 4L3, the setting wheels-41 and 42 are normally held out of engagement with the gears 22 and 23 and said setting wheels are pressed normally into engagement with the gears when the latter are operated,

The setting wheels ll and a2 are preferably formed of wood fiber or similar insulating material and the clock casing may be arranged in a casing of suitable insulating material such as porcelain, wood fiber or the like (not shown) to insure a perfect insulation from electric currents while setting or winding the clock, when in position in the circuit.

From the foregoing description, taken in connection with the accompanying drawings, the construction 'and operation of the invention will be readily understood" without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of, the advantages of the invention, as defined appended claims. l

' Iaving thus described my invention,what I claim is:

1. In an electric time switch, the combination with a clock works, of a spring retracted switch member having an electrical connection with one terniinal of an electric circuit, a pivotally mounted cont-act plate having an electricalconnection with the other terminal of th circuit, a contact block carried by said swi ch member and adapted to be engaged with said contact plate to complete the electric circuit, a switch operating gear adapted to move said switch member into gagement with said contact plate, thereby closing the electric circuit, a stop arm carried by said switch member, a

match adapted to be engaged by said stop 'arm to hold the switch member in closed position, a gear adapted to trip said catcln and release said'switch member, a pinion slidably keyed to the hour hand shaft of the clock works, and adapted to normally engage and operate said gears, means to disengage said pinion from said gears, and means whereby the latter are set to open and close the switch at the desired time.

in the 2. In an electricitime switch, the combination with clTck works, of a pivotally mounted spr ngiet-racted switch member, an

operating big on one end of said switch member, a stop arm carried by said member, a contact block on the freeend thereof, a pivotallvfimounted contact plate arranged in said cloth and adapted to be engaged by the contact block on said switch member, an elevating spring adapted to be engaged by the contact block on said switch member and to be elevated to a position for engagen'ient with said contact plate, a switch closing gear revolubly mounted in the clock, an operating pin carried by said wheel and adapted to engage the operating lug on said switch member, whereby the latter is moved to a closed position, a spring retracted catch adapted to be engaged by the stop arm on said switch member and to hold the latter iin closed position, a revolubly mounted gear,

an operating pin carried by said gear and adapted to trip said catch, thereby releasing said switch member, a spring to retract said member to an inoperative position when released from saidcatch, an operating pinion mounted on the hour hand shaft of the clock and operatively engaged with said gear-s to turn the same in proper direction to open and close the switch.

3. In a time switch, the combination with a clock arranged in and forming part of an electric circuit and having connected thereto an electric plug, of a pivotally mounted switch member, a stationary contact member adapted to be engaged by said switch member, a catch to hold'the switch member in engagement with said contact plate to close the electric circuit, a gear adapted to move said switch to a closed position and into engagement with said catch, a gear adapted to trip said catch and releasesaid switch, an operating pinion slidably keyed to the hour hand shaft of the clock, and engaging said gears to operate the latter in the proper direction, a shifting lever adapted to move said pinion out of engagement with said gears whereby the latter may be adjusted without interfering with the operation of the clock, and spring retracted set wheels adapted to be projected into engagement with said gears whereby the latter are turned and set from the outside of the clock.

4. In a time switch, the con'il'iination with a clock, of aspring retracted switch member, a contact member comprising a plate having a loose pivotal coi'mection whereby when enarranged on the dial of fleeting pointers arranged 0;; gears and pointing to en sud r mls whereby the posirg devices on said gears my whereof I have hereunto set L resence of two subscrlblng wlt- CAREY 'E. BUNKER.

FAQTR disengaged from said 15

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