US992077A

US992077A - Push-button switch.

Info

Publication number: US992077A
Application number: US58199710A
Authority: US
Inventors: Edwin D Stalfort
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-09-14
Filing date: 1910-09-14
Publication date: 1911-05-09
Anticipated expiration: 1928-05-09

Description

E. D. STALFORT.

' PUSH BUTTON SWITGE.

urmourmx IILED smear. 14. mo.

'P tented May 9, 1911.

m W m no IEDXVIN D. STALFORT; OF BALTIMOBE, MARYLAND.

PUSH-BUTTON SWITCH.

Specification Letters Patent.

Application filed September 14, 1910. Serial No. 581.997.

Another ohjeet of the invention is the provision of a push hutton switeh ineluding at ratehet or star wheel eontart. whiehhas alternate teeth tlanlted with insulation so as to rais .h-s fixed eontaet eofiperatiug with the wheel out of engagement therewith h v eat-h alternate step in the movement thereof 50 as to sueees ively open and (lose the (it'- euit h v sueeessively pressing the hutton whieh operates to eoutrol the wheel.

With these ohjeets in view and others, as a will appear as the deseription proceeds. t

invention comprises the various novel features of eonstruetion and :trnmgement of parts whieh will he more fully deserihed hereinafter and set forth with partieularit) in the elaiuts appended hereto.

tn the aeeompauyingz drawing. whit-h illu trates one emhmlitnent of the invention.

Figure l is a eeutral vertieal seetion of the wit h. Fig. 2 is a plan view thereof with the eovei' removed. a'iew of the malte or hreak ratehet wheel or uzm'ahle eontaet element. Figs. -t and 5 are detail views. :dmwiu; the position of the.

parts when the eireuit is open and elo etl.

Similar rehren e eharm-ters are ent- 311(1).("l to din-agitate t-tirre gmn liug parts throughout the H'Yl-l'itl "it\\' I f l l l l i Fig. I- is. a perspeetive i standard (3 fastened to the base. or hottotn of the casing. The free end of the contaet 2 is adapted to ride. on the teeth of the lnov; ahle eontaet and therehy close the .eircuit. The postand avle are preferably of metal and at the has-e of the post the other eireuit;

wire 7 is conneeted. v

Extending transversel across'the top of the casing and located lat-tween the eontaet wheel and inner end of the push button is a spr ng: paw] F fastened at 9 t0 the casing, one end of the leaf spring forming the pawl being bent downwardly so that the free end thereof will engage the contaet wheel. The spring pawl holds the push hutton normally outward and when the button is pushed inwardly the spring yields and causes the contaet wheel to move one tooth. The spring contact 2 not only forms a conductor for current hut operates as a hack aeting or hold back pawl ,for preventing the eontact wheel from movin; reverselv as the spring pawl returns to normal position when the pressure on the push hutton is relieved.

Fastened to one side of the eontaet wheel sulation. The alternate teeth 11 of this insnlation are raised above the correspondingi, i teeth of the eontaet, wheel. while. the intermediate teeth 12 are flush with the adjacent teeth of the contaet wheel.

The effect of I this is that as the rotary element of the switeh turns step-hy-step the spring contact; 2 will eontplete the. eircuit: when it engages the teeth of the. metal section of the element that. are flush with the insulation and open the eireuit when it engages the teeth of tho insulation raised ahove the metal seetion of ltet'erriug to the drawing designates a 1 asing made of pfll 'tlttlll or ulllt't uitahhinsulatin; material and ennstrtzeted in an 3 .-ituple manner. In the top of the easing is a deserihed the prineiple of operation of the and is adapt d to he pushed inwardly in rotates on an axle 5 set-tired to a 'iosl or tended hereto.

the element. it will thus he seen that the eireuit is made, and hrolt'en hv a single element that is moved one step eat-h time the hutton of the switch is pressed.

From the foregoing deseription. taken in invention. together with the device which I now consider to he the best embodiment, thereof, I desire to have it understood that th d viee shown is merely illustrative, and that sut-h ehanges may he. made when desired as are wi hin the seope of the. elaims ap- Ia tenied May 9, 1911.

Having thus described the invention what is claimed as new, is

1'. In a switch, the combination of a rotary element including metal and insuiation sections each formed with ratchet teeth, the alternate teeth on the insulation section being raised above the corresponding teeth upon the metal section, a spring contact arranged to engage alternately a tooth of one section and a tooth of the other section as the ele ment'is moved stepby-step, and an actuator arranged to engage the teeth of the element to turn the same step-by-step.

2. A switch comprising a rotatable element in the form of a ratchet wheel formed of conducting and non-conducting parts, the alternate teeth of the non,condncting part being raised above the corresponding teeth of the conducting part, a contact spring arranged. to engage the teeth of the element to complete and break the circuit by the alternate engagement of the teeth of the conductin and non-conducting parts, said spring being arranged to form a hold back pawl, and an actuating pawl arranged to engage the teeth of the said element to turn the same step-by-step. v a

. 3. A switch comprising a rotatable ele- .ment in the form of a ratchet wheel formed of conducting and non-conducting parts, the alternate teeth of the non-conducting part being raised above the corresponding teeth of the conducting part, a contactsprmg arranged to engage the teeth of the element to complete and break the circuit by the alternate-engagement of the teeth of the conducting and non-conducting part-s, said spring being arranged to form a hold back pawl,

an actuating pawl arranged to engage the teeth of the said element to turn thesame ing the last mentioned pawl.

4. In. a switch, the combination of a casing, a rotating element mounted therein and consisting of toothed conducting and non conducting parts, the alternate teeth of the non-conducting parts being raised above the corresponding teeth of the conducting part, means for connecting the conducting part to the circuit, a spring contact engaging the element to form a pawl and adap ed to complete the circuit by contact with the co'nr noting part and to break the circuit by contact with the raised teeth of the non-conducting part, a spring arranged within the easing and forming a pawl for engaging with and turning the said clement step-by-step,

and a pnsh'button arranged to operate w. R. FAHLiJR, W. J. MURRAY.

40, step-by-step, and a push button ir-r operat-