US937857A - Pendant switch. - Google Patents

Description

J. G. PETERSON.

PENDANT SWITCH.

APPLIGATIONHLBD JAN. 5, 1909.

937,857. Patented Oct. 26, 1909.

U N1 TED STATES PATENT OFFICE.

JOHANN Gr. PETERSON, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO THE ARROW ELECTRIC COMPANY, NECTICUT.

or HARTroRD, CONNECTICUT; A l'CORPORATION or CON- PENDANT SWITCH.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application iled J'anuar'y 5,1909. Serial No'. 470,771.

To all whomit may concem:

- Be it known that I, JOHANN GODFREY I E- TER'soN, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented a new and usefulPendant Switch, of which the following is a speciiication.

This invention relates to oscillating snap push button electric switches and more particularly to that class of such switches which are known as pendant switches, that is, switches which are attached to flexible and swinging electric circuit wires for the purpose of turning on and off current for one or more electric lamps'or fans that are out of reach.

The object of the invention is to provide a mechanism for such switches which will operate easily, quickly and safely for opening and vclosing an electric circuit; which mechanism has few parts, all of which are exceedingly cheap to manufacture and simple to assemble.

The invention is illustrated in the accompanying drawings as embodied in two forms of a pendant switch, one having two push buttons in the end'and the other having one push button in the end and the other in the side.

Figure l of the drawings shows on natural scale an'end view of the first form of pendant switch mentioned, without the exterior shell.

Fig. 2 shows on like scale a side elevationl view looking at one side ofthe switch mechanism of the lirst form of switch above mentioned. Fig. 4 shows a view on the same scale of the other side of the said switch mechanism. Fig. 5 shows a sectional View of .the switch mechanism. Fig. 6 shows a plan of the switch mechanism. `F ig. 7 shows an edge view. Fig. 8 shows on natural scale a view of the underside of the receptacle for this switch mechanism; and Fig. 9 shows on enlarged scale, a side elevation of the switch mechanism arranged for the second mentioned form of pendant switch, that is, the form which has one button extending though the end and the other through the s1 e.

The cylindrical pendent receptacle l, which is illustrated, may be made of porcelain or other suitable insulating material. This receptacle is designed to be inclosed in a metallic shell of usual' shape, which is not shown, as it forms no part ofthe present invention.

In both forms of switch illustrated th mechanism supporting frame is stamped from a single piece of metal with'sides 2 joined by an end 3. lLugs 4 project outwardly from the upper edges of the sides of the frame. `These lugs have threaded perforations 5 .for receiving the screws 6 which pass through the end of the receptacle and secure the frame in the interior.

An arbor 7 is mounted in the sides of the frame, and pivotally mounted on this arbor are a pair of arms 8 to which the push buttons 9 are connected by fingers 10. In the formof switch having two buttons projecting through the end of the receptacle, 4the lingers are attached to two lugs 11, which project edgewise from one of the arms, as shown in Fig. 5, while in the form which has one button projecting through the side of the receptacle, the finger connected with the j lbreak connection with the contacts 15 projecting from the plates 16 which are secured to the end of the receptacle fand are provided with screws 17 for the attachment of the circuit wires. The contact plateis insulated from the end of the yoke and the studs 18 which securel it thereto, by insulating washers 19.

Pivotally supported by the yoke near its swinging end is a bar 20 from which ex. tends a rod 21 that passes freely through a plate 22 that is pivotally supported by the forked ends of the arms. A spiral spring 23 thrusts between the bar carried by the yoke and the 'plate carried by the arms.

A sheet of insulating material 24 is placed over the open end of the receptacle. This insulating sheet is preferably held in place by nuts 25 turned upon the screws 26, which are employed to hold the fixed contact plates in position.

When one of the buttons is pushed inward, the armsare rocked in such manner that they cause the spring to be compressed until the ends of the arms pass the longitudinal axis of the yoke, at which time the tension of the spring throws, the yoke and changes the posltion of the contact brushes. The action is exactly the same 1n both cases,

`that is, whether both of the buttons project through thel end ofthe receptacle or one button projects through the end of the receptacle and the other through the side.

The invention claimed is:

1. An electric switch having an insulating receptacle, a frame secured in the receptacle, an arbor supported by the frame, a pair of arms pivotally mounted parallel with each other on the arbor, push buttons that extend through the wall of the receptacle connected with and adapted to oscillate said arms, a yoke having its two 4arms pivoted on the said arbor, contact brushes connected with but insulated from the swinging neck of the yoke, a spiral spring having one end connected with the arms relatively near the arbor, and the other end connected with the yoke relatively distant from the arbor, whereby the movement of the arms first compresses the spring and then allows the spring to expand and throw the yoke and brushes, and contacts fixed to the receptacle and adapted to be connected by the brushes.

2. An electric switch having an insulating receptacle, a frame secured in the receptac'le, an arbor supported by the' frame, a pair of arms pivotally mounted parallel with each other on the arbor, push buttons that extend through the wall of the receptacle connected with and adapted to oselllate said arms, a yoke havingits two arms arbor supported by the frame, a rocker pivl otally mounted on the arbor, push buttons connected with and adapted to oscillate the rocker arms projecting parallel with'each other from the rocker, a yoke having its two arms pivoted on the said arbor, a contact connected with, but insulated from the swinging neck of the yoke, a spiral spring having connected with the yoke relatively distant from the arbor, whereby the movement of the arms rst compresses the spring,and then, as the s rin .is carried between the one end connected with the arms relatively near the arbor, and the other end' arms of the yo e, a lows the spring to throwthe yoke and contact, and a contact fixed to the receptacle and adapted to be lengaged by the contact carried bythe yoke.

JOHANN lor. PETERSON.,

Witnesses: J OSEPHINE M. STREMPFER,

HARRY R. WILLIAMS.

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