US1358554A - Two-blade knife-switch - Google Patents

Description

W. JAEGER.

TWO BLADE KNIFE SWITCH.

APPLICATION FILED JUNE 14, 1919.

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TWO BLADE KNIFE SWITCH.

APPLICATION FILED JUNE 14, I919.

1,358,554, Patented NW. 9, 1920.

2 SHEETS-SHEET 2.

ummy UNITED STATES WILLIAM JAEGER, OF MENOMONIE, WISCONSIN.

TWO-BLADE KNIFE-SWITCH.

Application filed June 14, 1919.

able others skilled in the art to which it.

appertains to make and use the same, reference being had to the accompanying draw ings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in automatically operated means for opening and closing electrical circuits and controlled by clock mechanism, and consists of a simple apparatus of this nature so arranged that the circuit may be closed at a predetermined hour and also broken at such an hour as may be desired.

The apparatus is adapted especially for regulating and controlling electrically heated ovens, cooking ranges and appliances, and for regulating and controlling electric currents for show window lights, electric signs, etc, and consists of a simple and efficient device of this nature having various details of construction, combination and arrangement of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claims.

My invention is illustrated in the accompanving drawings which, with the numerals of reference marked thereon, form a part of this application, and in which:

Figure 1 is an elevation of the apparatus.

Fig. 2 is a sectional view through the casing, showing in edge elevation parts of the apparatus.

Fig. 3 is a plan view,and

Fig. 4 is a sectional view.

Reference now being had to the details of the drawings by numerals:

1 designates a casing having binding posts 2, 3, 4 and 5, the two former of which, 2 and 3, are electrically connected to the terminals 6 and 7. The terminal 6 is connected by electrical wiring 8 with the binding post 4, and the terminal 7 is connected through a wire 9 with the binding post 5. The circuit closing switch is designated by numeral 10 and is pivotally mounted upon a pin 12 and has Specification of Letters Patent.

Patented Nov. 9, 1920.

Serial No. 304,110.

two blades adapted to be drawn in contact with the terminals 6 and 7 through the medium of the coiled spring 13.

In the drawings I have indicated diagrammatically the conventional mechanism of a clock works having a hand carrying post 14 the hand adapted to move over a dial upon the face of the frame. A second dial is designated by numeral 16 and has numerals upon one-half thereof designating the hours during the A. M. and other numerals designating the hours P. M., the two sets of nu- Inerals designating all of the twenty-four hours of a day. Concentrically disposed relative to the dial 16, shown in Fig. 4 of the drawings in section, is the shaft 17 having a gear wheel 18 keyed thereto which in turn is adapted to be driven by gear connection with the clock mechanism. Frictionally mounted upon ihe shaft 17 is a sleeve 19 having a contracted cross-sectionally noncircular end, also fitting a similarly shaped central aperture in a ring 21, which thus rotates with said sleeve. Said sleeve has an angled pointer 22 bent over the periphery of the dial 16 and is adapted to indicate one or another of the numerals thereof. A gear wheel 23 has a hub portion which is frictionally mounted upon the sleeve 19 and carries a pivotal trip 24 on the face thereof. The teeth of said gear wheel 23 are formed in a laterally extending peripheral flange, as shown clearly in Figs. 2 and 4 of the drawings, and 25 is a pinion fixed to a shaft 26 having a turning handle 27. Said shaft 26 is adapted to have a longitudinal movement to throw the pinion carried thereby into or out of mesh with the teeth in said gear according as it may be desired to set the pointer 22 to indicate the predetermined moment the current is to be broken. An angled pointer 28 is fixed to the gear 23 and is adapted to indicate over one or another of the numerals upon the dial 16, and is adapted to indicate the predetermined moment the circuit will be closed. Said sleeve 19 has an integral gear wheel 29 with a laterally extending peripheral flange provided with teeth 30, which are adapted to mesh with the teeth of the pinion 31 fixed to a stem 32 provided with a hand Wheel 33 for turning the same. A coiled spring 34 is mounted upon the stem 32 and interposed between the wheel 33 and the frame of the mechanism through which the stem passes, the purpose of said spring bein to normall hold the )ii'llOIl out of e: iii mesh with the teetn upon the gear 29.

Pivotally mounted upon a shaft 35 is an angled lever comprising two arms desig nated respectively by numerals '36 and 37, the latter having a lateral projection 37*. Said arm 36 is formed to provide a hook adapted to engage a shaft 38 pivoted at 38 and guided in a slot 38 in a bracket 38 and which shaft passes through a slot 39 in a bar 40, the latter being adj ustably held to a link 41 through the medium of the shaft 38 passing through the slot 39 and on the end of which shaft a thumb nut 43 is screwed. The link 41 is pivotally connected at 44 to the switch 10 and is adapted to raise the switch to break the circuit. through the medium of a crank arm 45 to which it is pivoted, and which in turn is fixed to a shaft 46 driven by gear connection with a shaft 47 which is driven by means of a spring 48.

Fixed to a shaft 49, which in turn is driven by gear mechanism from the spring driven shaft 47, is an'escapement wheel 50, having three radial fingers 51 thereon. An escapement member 52, bent as shown in Fig. 1 of the drawings has a disk 53 fixed thereto which is mounted to rock upon a pivot 54, and said disk has fixed thereto a plate 55 one end of which is adapted to project into the path of a trip 56 which is mounted upon the gear 29.

In operation, when it is desired to adjust the apparatus to cause the circuit to be closed at a predetermined moment and designated by the pointer on the face of the dial 16, for the purpose of actuating any electrically controlled mechanism, such as a heater for ovens, etc., the angle lever -3637 will be tilted by the trip 24 coming in contact with the lateral projection 37 upon the angle lever, causing the latter to turn upon its pivot rocking the hook portion of the lever on 43 out of engagement-withtheshaft 38, as shown bydotted lines in Fig. 1 after which the spring 13 will throw the switch into contact with the terminals 6 and closing the 'circuit- The dial will continue to revolve, it being understood that said dial makes a complete revolution once in twentyfour hours, and when it is desired to break the circuit at a predetermined hour and'indicated by the pointer 22, when the trip 56 comes in contact with the plate 55 the latter will tilt as shown by dotted lines in Fig. 1, throwing the escapement member which is fixed thereto out of the path of the fingers 51, and which will permitthe shaft 46 to be given a partial rotary movement and through its connections with the switch cause the same to be raised and automatically held in a raised position through the medium of the hook upon the angle lever arm 36 which engages under the shaft 38 it Said bar '40 is raised being understood that the shaft 46 is caused to rotate through the influence'of the coiled spring 48 which actuates the shaft -7 having gear connection with a gear wheel upon theshaft 46. V

While I have shown means for opening and closing the circuit, it will be understood that the parts may be duplicated should it be desired to cause the circuit to be opened or closed at different intervals or to actuate several circuit closing and breaking devices for the purpose set forth, without departing from the spirit of the invention.

lVhat I claim to be new is:

1. An automatic circuit closing and breaking apparatus, comprising a clock work mechanism, terminals and pivotal spring pressed switch with electrical connections between the terminals, a shaft having gear connection with the clock works, and a dial fixed to said shaft and having numerals thereon designating the hours of a day, a sleeve frictionally'mounted upon said shaft, a pointer rotating with said sleeve and movable adjacent to the face of the dial, a gear frictionally mounted upon said sleeve, a pointer and a spring pressed trip mounted upon said gear, means for adjusting the pointers, a pivotal shaft adapted to hold theswitch open, a spring pressed angle lever adapted to be actuated by said trip .to release the switch Which is closed by the spring attached thereto, and means for opening the switch.

2. An automatic circuit closing and breaking apparatus, comprising a clock work mechanism, terminals and pivotal spring pressed switch with electrical connections between "the terminals, a shaft having gear connection with the clock works, and a dial fixed to said shaft and having numerals thereon designating the hours of a day, a sleeve frictionally mounted upon said shaft, a pointer rotating with said sleeve and movable adjacent to the face of the dial, a gear frictionally mounted upon said sleeve, a pointer and a spring pressed trip mounted upon said gear, means for adjusting the pointers, a pivotal shaft adapted to hold the switch open, a spring pressed angle lever adapted to be actuated by said trip to release the switch which is closed by the spring attached thereto, said sleeve having a gear wheel rotating therewith, a spring pressed trip fixed upon the gear which to tates with the sleeve, a pivotal shaft with connections between the same and said switch, a spring actuated shaft with crank connections with said shaft which is connected to the switch,-a spring actuated escapement Wheel, and escapement member coperating therewith and actuated by the gearwheel which rotates with the sleeve.

3. An automatic circuit closing and break ing. apparatus, comprising a clock work mechanism, terminals and pivotal spring pressed switch with electrical connections between the terminals, a shaft having gear connection with the clock works, and a dial fixed to said shaft and having numerals thereon designating the hours of a day, a sleeve frictionally mounted u on said shaft, a pointer rotating with said s eeve and movable adjacent to the face of the dial, a gear frictionally mounted upon said sleeve, a pointer and a spring pressed trip mounted upon said gear, longitudinally movable shafts having pinion wheels fixed thereto and adapted to engage the teeth of the gears to regulate said pointers, a pivoted shaft adapted to hold the switch open, a spring pressed angle lever adapted to be actuated by said trip to release the switch which is closed by the spring attached thereto, and means for opening the switch.

4. An automatic circuit closing and breaking apparatus, comprisin a clock work mechanism, terminals an pivotal spring pressed switch with electrical connections between the terminals, a shaft having gear connection with the clock works, and a dial fixed to said shaft and having numerals thereon designating the hours of a day, a sleeve frictionally mounted upon said shaft, a pointer rotating with said sleeve and movable adjacent to the face of the dial, a gear frictionally mounted upon said sleeve, a pointer and a spring pressed trip mounted upon said gear, means for adjusting the pointers, a shaft pivoted at one end, a link fixed to said shaft and having pivotal connection with the switch, a spring pressed shaft with crank fixed thereto, a slotted bar pivotally connected to a pin upon the crank and fastened to said pivotal shaft, and escapement mechanism for permitting said crank shaft to rotate at a predetermined hour and actuated by a trip upon the dial carrying shaft.

In testimony whereof I hereunto afiix my signature.

WILLIAM J AEGER,

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