US1917104A - Starting motor switch - Google Patents

Description

July 4, 1933. L. B. EHRLICH STARTING MOTORSWITCH Original Filed June 11. 1925 0 w w E 5 m .0 Z

Patented July 4, 1933 um'rro STATES-PATENT OFFICE hours i. mnron, or ronnnq-omo essrenoa To run ELECTRIC auro arrr. oomrm, or roar-no, oauo, A conroaarrou or OHIO STARTING- MO'IOR Original application flledjune 11, 1925, Serial No. 86,467, now Patent No. 1,839,916, dated January 5,-1985l Divided and this application filed September 20, 1928. Serial 1T0. 807,191.

- Thisinvention relates to controllin means for starting motor switches, and is a iv1s1on of my ap lication for Starting motor switches, erial Number 36,467, filed on J une ll, 1925, which issued into Patent Number 1,839,916, January 5,1932. f Switches for starting motors forv automobile engines are usually arranged on the floor board of the body underthe foot'of the driver, but where they have been mounted directly on the motor the construction was.

such thatv it was still. necessary to connect the switch terminal with the motor terminal by a.

cable or the like. In accordance with this part-of my invention, the construction of my switch and its installation on the motor are simplified by using the motor terminal asone .'terminal of the switch and extending that terminal insulatedly through the motor frame for connection inside the motor to the field or armature winding or both. The switch terminal formin the other terminal of the insulatedly by the motor may be further simplified by providing a switch housing which is fastened to the motor 1 frame and not only carries the, switch termi-" nal but extends over the motor terminaL.

, Preferably one of said terminals, usually the switch terminal, carries the conducting member or switch blade which extends into cooperative relation with the other. terminal and is usually a spring metal plate adapt-ed :to be pressed into contact with that terminal by means of an operating lever pivoted on v the 1 switch housing, This operating lever may be actuated by the driver by means of a pull'wire or by a push rod extending to a knob on the face of the dashboard of the automobile, and the operating lever'is preferabl so constructed and arranged as to be suita le for both means of operation upon bemg reversed in-position on a pivot supported by the housing.

In the accompanying drawing illustrating the. preferred embodiment of my switch, Fig.

1 shows, partly in elevation and partly in section, the switch operated by a pull wire; Fig. 2 is a similar view showmg the switch operated by a push rod with the operating lever of the switch reversed for that purpose;

the armature or field winding, or both, being soldered or otherwise fastened inside the frame to the bottom of the terminal between the ears 2 of the cli 3. This motor terminal .has a top contact rmed by a copper nut 4 screwed on the shank 5 of the copper stud bolt and held from turning thereon by the lock washer 6. The switch terminal 7 extends, through the pressed-up metal switch housing 8 and is insulated therefrom as shown. Outside the housing the cable conw nector 9 is secured to theterminal for connection of the battery lead -10 and inside the houslng the conducting element or switch blade 11 of spring copper is-fastened to this 1 terminal so as to extend over the nut 4 of the motor terminal, the switch housing 8 being fastened to the motor frame at 12 and covering the motor terminal. Mounted on the pivot pin 13 which passes through cars 14 struck up fromthe housing, is'an operating lever 15 carrying-the rollers 16 of insulating material near its inner end and having a hole near its outer end.

' *Where a pullwire is used for-operation, the-operating lever is arranged as shown in Figs. 1 and 3, the pull wire consisting of a wire 17 passed through the hole in the oper- I ating lever 15 and secured by the adjustable connector 18. Atthe body frame member 19' the wire passes through a guide tube'20 which is held in place by thefitting 21 assing through the dashboard 22,v the wire 1 being fastened to the rod 23 having a-knob orhandle 24 at its end for operationby the driver.

' Where a push rodis used for operation, the operating lever 15 is arranged, as shown in Fig; 2 in reverse position on'the pivot pin 13 and the rod 25 with an elongated slot at 26 is connected thereto by a?" cotter pin 27;, or the like. This rod passes through a tube 31cc l 28 secured to the face of the dashboard 29 and has a knob 30 for operation by the driver,

It will now be obvious that-to close the switch for supplying current from the battery or other source to the starting motor, the operator merely pulls the knob 24 of Fig. l or pushes the knob 30 of Fig. 2, to the limit of its motion, wherebythe switch blade 11 is pressed by the rollers 16 into intimate contact with the top contact of the motor terminal and the circuit thereby completed. from the battery or other source to the motor. As a result of the bend at 31 in the switch blade, there is a slight but suldcient wiping action of the blade on the motor terminal, particularly in the arrangement with the pull wire, Suficient to keep the contacting surfaces clean. Upon releasing the knob, the spring tension in the switch blade 11 restores the parts to their normal or open position shown in the drawing.

Having thus described my invention what I claim is: i i

l. lln a motor switch, a pair of terminals; an element attached to one of said terminals; a reversible lever adapted to be pivotally mounted in either of two positions with respect to said element and adapted to more said element into engagement with said other terminal in one position when the end of said lever is pulled, and in the other position when the end of said lever is pushed.

2. la a motor switch, a pair of terminals a casing enclosing one of said terminals and insulatingly supporting the other terminal; a flexible element for completing a circuit between said terminals; means for flexing said flexible element including a lever and antifriction means connected with said lever and interposed between said casing and said lien ible element, and means including a ilenible wire for manipulating said flexible member to complete the circuit.

3.,lln combination, a switch comprising a housing; a resilient switch blade in said housing; means insulatingly supported on said housing and fixedly retaining said. switch blade; means for flexing said switch blade comprising a lever journalled upon said housng, the tension of said blade normally holdmg said means into engagement with said housing; and means including a flexible wire for manipulating said lever from a position remote to said switch.

d. lln combination, a switch comprising a housing; a resilient switch blade in said housing; means insulatingly supported on said housing and fixedly retaining said switch blade; said retaining means acting as a connecting terminal; means for flexing said switch blade comprising a lever journalled upon said, housing; a roller journalled in one end of said lever and adapted for rolling engagement with said switch blade, the tension of said blade normally holding said roller into engagement with said housing; and means includinga flexible wire for manipulating said lever.

5. n a motor switch, a casing; a terminal carried by said casing and insulated therefrom, said terminal having a portion proj ectingexteriorl of said casing; a resilient memmeans mounted upon said casing including a lever, and antitriction means comprising a roller of insulating material journalled upon said lever for engagement with said resilient member; a'manipulating means including a flexible wire for operating said lever from a position remote to said casing.

6. ln a device of the character disclosed. in combination, a switch casing; a terminal supported thereon and insulated therefrom; a spring switch blade carried by said terminal; a lever pivotally secured to said casing; a shaft forming a pivotal support for said lever having a plurality oil annular grooves; means for holding said shaft in position including portions of said casing adapted to project into said annular grooves; anti-*itriction rel ers carried by said lever for coo oration with said switch blade; and manipu ating means operatively connected to said lever.

i. la a device of the character described; in combination, a substantially rectangular switch housing having a wall provided with flat portions arranged in substantially diilerent parallel planes; circuit terminal sup ported on one oil th flat portions oi said housing wall and i ulated therefrom; a spring switch blade carried by said terminal within said housing; a lever pivotally supported upon struck up projections fiorm on the other flat portion ct said housing wall; a shaft forming a. pivotalsupport "for said lever, the struck up portion of said housing holding said shalt in position; and an anti friction roller carriedby said lever for cooperation with said switch blade, said lever having a manipulating portion projecting euteriorly of the walls of said housing,

8. lln combination, a switch comprising a substantially rectangular sheet metal housing having a wall provided with hat portions located in substantially difierent parallel planes; a resilient switch blade within said housing; a terminal insulatingly supported on a hat portion of said housing wall "for fixedly. retaining one end of said switch blade; means for flexing said switch blade comprising a lever journalled upon the other fiat portion of said housing wall; and antiiiriction means connected with said lever and interposed between said housing wall and said switch blade, said housing wall having an opening adapted to accommodate a portion of said lever projecting externally oi said switch housing 9.. in combination, a switch comprising a substantially rectangular housing having .ber carried y said terminal; manipulating ltlll lilll llti lilli of sai spaced parallel side walls and a connecting wall, said connectin wall having flat portions arranged on dlfierent planes; a resilient switch blade in said housing; means insulatin 1y carried by one of the flat portions housing wall for supporting said switch blade, said supporting meanshavinfi a portion projecting exteriorly of said s'witc housing and acting as a circuit terminal for. said switch blade; means for flexing said "LOUIS B. EHRLICH.

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