US741905A

US741905A - Push-button.

Info

Publication number: US741905A
Application number: US13846803A
Authority: US
Inventors: Edwin W Ham
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-01-10
Filing date: 1903-01-10
Publication date: 1903-10-20
Anticipated expiration: 1920-10-20

Description

button is placed in a plain hole of this kind, itsholding-clips will have suilicient tension to fasten the push-button -in place with suffibe readily withdrawn from its socket andthe comparatively small hole which has been made for receiving the body of the push-button can be plugged and refinished without materially marriug iheiwoodwork or other mate rial in which the push-button may be located.

The electrical connections controlled by the finger-piece ofthe push-button are preferably-- 'arranged in as simple and direct a manner as possible, so that the electric` wires may so connect that little chance will be afforded for short-circuiting or electrical resistance, while at the same time the operative parts will be inclosed in a substantially dust-proof casing. To accomplish these results, I preferably employ substantially U-shap'ed n tact-pieces 18, the ends of which form spring-arms extending in through slots iu the walls of the casing to coperate with the conical point 13 of the operating-rod.` At their rear ends the contact-pieces 18 are perforated to receive the fastening-screws 19. The heads ofthe fastening-screws 19 preferably fit/into counterbored recesses in thc rear of the body 1,0, as shown in Figp3, and the screws 19 may engage small metal bushings 20, which are cast into the rear eud of theinsulating-casing 10. The screws 19 by means of this construction are utilized both for ,holdingthc contactpieces 18 in place and for forming bindingposts to connect the wires NV directly to the 'contact-pieces." By having the headset' the screws 19 fitting into recesses or countcrbored sockets the Walls of these sockets will hold the ends of the wires Win place,.sc that'the ends o f the Wires will be directed back away from each other to prevent the ends of the wires being bent into contact to accidentally produce short circuits. o y

I am aware that changes maybe' madein the construction of my push-button without vdeparting from the scope of/my invention as expressed in the claimsand that constructions may be devised embodying a part Aonly of the features which I have herein shown and described. v i

I4 do not Wish, therefore, to be limited to the construction .herein illustrated; but

W'hat I do'claim, and desire to secure by Letters Patent of the United States, is-

1. As an article of manufacture, a pushbutton construction comprising an insulating- Vitnesses: l

casing, two substantially U-shaped contact- 6o pieces, one arm of each of said contact-pieces projecting through a slot in the side wall of the insulating-casing, andthe other arm of f. Said-centact-piecei extending around to the'v rear endof the-casing, and means for malring connection between the ends of the contact-pieces which are extended into the inside of thec'asing. A. 2. As an article of manufacture, a pushbutton construction comprisinga cylindrical go .insulating-casingwitha closed innerend,aud having oppositely-disposed grooves in its outer face, two substantially tJ-shaped contact-pieces mounted in the grooves, one arm vof each contact-piece extending through a',75

slot to the inside of the casing, while its other arm extends around to the other end of the casing, a screw fastening each contact-piece to the end of the casing and furnishing meansl for connecting a wire thereto, and a contact- 8o making plunger for making connection between the ends of the contact-pieces which7 extend to the inside of the casing.

3. As an article of manufacture, a pushbutton construction comprising internallythreaded bushings, and insulating casingcast around the bushings, contact-pieces hav ing arms extend-ing through slots-inthe sider walls of the casing, .with the other ends of said contact-pieces extending around tothe 9c rear of the casing, screws threaded into the 'bushings and serving as fastenings for 'thev contact-pieces and as binding-posts for connecting thc wires thereto,- and means for establishing connection between, the contactpieces. p i 4. In a push-button construction, the combination of a cylindrical insulating-casing, a front piece or face-plate secured to the end of thecasing, anda spring holding-clip fasico tened in position by the face-plate and serving to hold the push-button in the socket or Vrecess into which the'same is fitted.

5. AS an article of manufacture, a 'pushp button construction comprising a cylindrical :o5 insula'tingcasing, .a sheet-metal face-plate threaded to the casing, and fa holding-clipA fastened in place bythe face-plate and consisting of a partial washer-shaped body with spring-arms extending from the ends thereof.y 1ro In testimony whereof I have hereunto set my hand in the presence of two subscribing EDWIN W, (HAM.