US2448841A

US2448841A - Electric switch

Info

Publication number: US2448841A
Application number: US666711A
Authority: US
Inventors: Tayler Ellen Graves
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-05-02
Filing date: 1946-05-02
Publication date: 1948-09-07
Anticipated expiration: 1965-09-07

Description

Sept. 7, 1948.

E. G. TAYLOR ELEQTRIC SWITCH Filed May 2, 1946 INVENTOR.

ELLEN G.TAYLOR BY I ATTORNEY Patented Sept. `7,` 1943 UNITED w sures PATENT orr CE agimm Ellen Gram Tayior. Miami. Fle.- Appliotion Ma! 2, 1040, Serial No. 606.711

1 3 Clain.

My invention relates to quick action eiectric switches. 4

An important object of the invention is to provide means to shift the movable contact and hold the same, in the shlf-ted position.

A further'object of the invention is to provide resilient means to quickly complete the shiftins' movement of .the movable contact.

A further object of the invention is to provide A further object of the invention is to provide a switch of the above mentioned character, which is simple in construction, convenient to operate and not liable to derangement.

A further object of .the invention is to provide a switch of the above men-tioned character having a contact element shiftable to one ormore circuit closing positions.

Other objects and advantages of the invention will be apparent during .the course oi' .the following description.

In the accompanying drawings forming a part of this application and in which like numerals are employed to designate like pa'ts throughout the same,

Figure 1 isa side elevation of a switch embodying my invention, the front side plate 'being removed and the movable contact in one circuit ciosin position,

Figure 2 is a similar view with the movable contact in the intermediate position,

Figure 3 is a transverse section taken on line 1-3 of Figure l, and

Figura 4 is a similar view taken on line 4-4 of Figure 2.

In the drawings. wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates an insulating casing body portion, formed of "Bakelite" or the like. The opposite sides of this casing are covered by plates E, formed of "Bakelite" or the like, and secured to the body portion by screws or the like. The body portion 5 has a chamber or cavity 1 formed therein, having upwardly converging side walls 8, and lower or bottom walls S, curved as shown. The chamber 'I has a horizontal top wall ili provided with a downwardiy extending projection II, iongitudinally curved, as shown. A pair of stationary contacts !2 are providedmeid within grooves II, and having horizontal ends ll flush with the wall ID. .A similar pair of contacts I! are provided, held within 2 erooves il and having horizontal ends ll', flush with the wall II. Each pair of contacts is connected in a separate circuit.

The numeral I'I designates a disc or carrier. mounted to turn in a transverse recess li, and pivotally supported by a pin I 9, held within openings 20, in the plates O. The carrier or disc ll and pin I! are formed of insulating material, such as "Bakelite" The carrier or disc l' projects downwardly beyond .the body portion 5 and has-a lever or arm Il. tormed integral therewi-th and provided with steps zi' 'to limit the throw oi' the lever. Formed integraly with the carrier or disc l'l, within the cham'ber 1, is an extension or shifting member 22, having upwardly diverging arm 23, provided with radial faces or shoulders 24.

Arranged withinthe chamber 'I is a resilient frame 25, rormed of metal and which is substantially rectangular or square. when expanded. This frame includes upper sides 20 and lower sides 21, as shown. The lower ends of the sides 21 ar'e held within radial slots Il. fo'ned in the carrier or disc I`l. and these sides have inturned ends 2 9, held within notches fl. At the upper ends of the sides !I the !rame is provided with knuckies Il, receiving a pin 32, carrying a roller u.

The operation of the switch is as follows:

When the contact roller 33 is in the circuit closing position. Figura 1, .the frame 25 is expanded and the lower sides 21 engage the shoulders or faces 24. In Figure 1, the contact roller is connecting or bridging the ends M of the contacts z. When it i-s desired to break the electrical connection, between the ends Il, and connect the.

ends i'l of contacts II. the carrier or disc il is turned clockwise. Figure 2. The contact roller ll engages the projection ll and is depressed thereby. The lower arm 21 to the left is now fiexed. serves as a leaf spring and moves from the adjacent face or shoulder 24. The upper arm !I to the left serves as a push rod to move the contact roller ll. while the lower side 21 to the right in conjunction with the adiacent face or shoulder u becomes a lever to shift the contact roller 33 to the right, moving at approximately a right angle .to the line of puil. The upper arm 28 to the right serves'as a leaf spring and rod for transmitting the pull to the contact roller u. The opposite of this operation occurs when the carrier or disc I 1 is swung in an opposite direction. When the contact roller 33 passes the high point of the projection I I, the roller quickly moves 'to the circuit closing position, to engage the ends of the pair o! contacts.

I contemplate omitting one pair of stationary contacts, so that the switch will operate as a single pull switch. The stationary contact unit may also be in the form of a single stationary contact instead ot a pair of contacts. in which event the metallic frame 25 would be connected in the circuityas is obvious.

It is to be understood that the form of my invention herein shown and described is to be taken as a preferred example of the same and that various changes in the shape. size and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Iclaim:

1. A switch comprising a support having a, projection, contact units carried by the support and arranged upon opposite sides of theprojection. a swinging carrier mounted upon the support and having shoulders extending generally radially beyond such carrier, a resilient frame having its ends mounted upon the carrier and having parts to engage the shoulders, each part being n'ovable in one direction from the shoulder. and a contact element carried by the frame and movable from one contact unit to the' other contact unit and across the projection.

2. A switch comprising a support having a projection, contact units carried by the'support and arranged upon opposite sides of the -projection, a pivoted carrier mounted upon the support, a shifting member mounted upon the carrier and having generally radial shoulders, generally bowed resilient elements connected at corresponding ends and mounted near their opposite corresponding ends upon the carrier, the shiiting member being arranged between the generally bowed elements and projecting beyond the mounting or the elements upon the carrier, each generally bowed element having a part movable in one direction !rom the adjacent shoulder, and a contact element Secured to the generally bowed elements for coaction with the contact unit and the proj action.

3. A switch comprising a support having a projection. contact units carried by the support and. arranged upon opposite sides of the projection. a. pivoted carrier mounted upon the sup-' port, a shifting member mounted upon the car rier and having generally ra-dial shoulders, opposed resilient elements, each resilient element including angularly arranged arms, corresponding arms of the elements being connected, the other corresponding arms being mounted upon the carrier and disposed outwardly of the shifting member and movable in one direction from the shifting member. and a contact element secured to the resilient elements for coaction with the contact units and projection.

ELLEN GRAVES TAYLOR.

REFERENCES CITI'ED The following references are of record in the file of this patent:

UNITED STATES PATENTS Douglas Oct. 5, 1937