US1856407A - Electric switch - Google Patents

Description

May 3, 1932.

V. G. APPLE ELECTRIC SWITCH Filed Jan. 27, 1930 I JNVENTOR. Mncent ,flpp/e ATTORNEYS Patented- May 3, 1932 UNITED STATES PATENT OFFICE v INcEN'r e. 'AI'PLE, or DAYTON, 0310, ASSIGNOB 'ro BENDIX BRAKE comPANY, or r sourn BEND, INDIANA, A CORPORATION or ILLINoIs ELECTRIC swI'rcII Application filed January 27, 1930. Serial No. 4232641.

My invention relates to electric switches and has particular reference to a switch which may be utilized to close a plurality of ber of the switch is continuously operated.

In its final stage the circuit will be without any resistance the lastswitch having functioned to shunt out the resistance from the circuit.

Another object of my inventionis'to provide a switch such as above described which is constructed of relatively few partsand very simply assembled.

Still other objects and meritorious features of my invention will be apparent from the following description taken in conjunction with the drawings wherein like numerals refer to like parts throu hout the several figures and wherein 2 "Fig. 1 is a cross sectionthrough the vertical axis of the switch element along the line 11 of Fig.2, 7 p

Fig. 2 is a cross section through the vertical axis between the switch element along the line 22 of Fig. 1, r

\ Fig. 3 is a plan view, partly in section, taken along the line 3'3 of Fig. 1, and

Fig. 4 is a circuit diagram illustrating one manner of applying the switch toa circuit including external resistance, battery, and

, in place by means of the nuts 14.

electric motor.

, As illustrated in the drawings my switch unit is comprised of'a housing of suitable insulation material. arethreaded into the'housing and clamped The nousthe-screws 18. 1 The plate is securely faswithin the scope of the appended claims. The terminal screws 12 tened to the cover member rivets, welding or an other desired means. As illustrated in ig. 2 the screws 18 are threaded through the lateral flanges 22 of the cover member20 and assist in securing this cover to the assembly. p

Extending through the plate 16 are the insulated pins or studs 24 and 26. Each of the studs 24 and 26 is provided withan upwardly extending projection 28 and 30 which seats in an aperture in the plate 32.

A shaft 34 extends transversely through the upper portion of the cover member 20, and secured to this shaft by means of a pin 36 is a cam roller 38, This cam roller rests upon the plate 32 intermediate the portions wherein the studs 24 and 26 are seated.

The switch plates 40 and 42 are held against the studs 24and 26 respectively by means of coil springs 44 and 46. As illustrated these springs are held in fixed position withrelation to the switch blades 40 and 42 by means of downwardly extending projections on studs 24 and 26. Spring 46 is stiffer than spring 44.

lit is obvious from the illustrations that as the shaft 34 is rotated the cam roller 38 is likewise rotated. This cairn roller contacts the upper face of plate 32 and as it rotates, it will function to depress the switch plate 40 'iipon its initial rotation and bridge the contacts 48. This particular switch may be incorporated with a resistance unit such as I have described in my above specified copending application. Upon subsequent rotation of the cam roller '38 the switch blade 42 will be depressed, bridging contacts 50, and thus shunting out the resistance unit to close a direct circuit from the battery through any desired electromotive apparatus such as the electric motor 52 in Fig. 4.

Various modifications of my device will be apparent to those skilled in the art and for that reason I intend to limit myself only I claim: 1. An electric switch comprising a housing, a plurality of pairs ofcontacts and -1nde-.

pendently operable-means forbridging each 1 pair supported therein, rigid-means coupled pendently therewith and operable to actuate either one or both of said bridging means, and a rotatable member operable from outside the housing contacting said rigid means and adapted upon rotation to successively bridge said pairs of contacts.

2. An electric switch comprising a housing, a plurality of p)airs of contacts and; independently opera le means for bridging each pair supported therein, rigid means coupled therewith and operable to actuateeither one or both of said bridging means, a cam shaft rotatably journalled in said housing having its cam face contacting said rigid means and operable from a point outside the housing.

3. An electric switch comprising a housing, a plurality of pairs of contacts and indeoperable means for bridging each pair supported therein, and yieldable means of unequal power associated with each bridging means normally retaining the same in non-bridging position. p

4. An electric switch comprising a housing, a plurality of airs of contacts and independently opera ble means for bridging each pair supported therein, yieldable means associated with each bridging means normally renecte blades for actuatin the-same successively. 9. An electric switch comprising a hous ing, a plurality of pairs of contacts inde-' pendently operable switch blades helg in inoperative position with'relation to sm 1y coupled with each of said'switch yieldably V Cpairs of contacts, a rigid unit disconblades, and rotatable means eccentrically journalled within. said housing about an axis midway between said switch blades and in camming relation to said rigid unit.

10. In combination with a pair of contacts,

independently operable switch blades yieldably retaine in inoperative relation to each of said contacts, a single unit coupled with each-of saidswitch blades at spaced apart points, axis of and bearing upon said single unit in camming relation thereto. v a

In testimony whereof, I, VINCENT GaAPILE, sign this specification. 5 VINCENT G. APPLE.

and an eccentric journalled about an taining the-same in non-bridging position,

and a single rotatable means operable from a point outside the housing for overcoming the resistance of said yieldingmeans to bridge the contacts.

5. An electric switch comprising a housing, a plurality of pairs of contacts and independently operable means for bridging each pair supported therein, yieldable means of varying resistance, a single member coupled with all of said bridging means,

and rotatable means journalld in the housing engaging said single member whereby said pairs of contacts are successively bridged upon rotation thereof.

v6. An electric switch comprising a housing, two pairs of'contacts secured therein,

studs slidably supported therein carrying a bridge plate in operative relation to each pair of contacts, and separate yieldable means of unequal power retaining each stud at the inoperative extremity of its slidable movement.

7 An electric switch comprising a housing, a plurality of pairs of contacts supported therein, a switch blade operable to ridge :each of said pairs. of contacts, and yieldable means of unequal power retaining each of said blades in non-circuit making position.

8. An electric switch comprising a housing, a plurality of pairs of contacts supported therein, a switch blade operable to bridge each of said pairs of contacts, and yieldable means of unequal power retaining each of said blades in non-circuit making position, and .rotatable means operable through a rotation midway between said blades A single rigid connection between said switch

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