US1657040A

US1657040A - Electric switch

Info

Publication number: US1657040A
Application number: US182782A
Authority: US
Inventors: Schmid William
Original assignee: HARRY A DOUGLAS
Current assignee: HARRY A DOUGLAS
Priority date: 1927-04-11
Filing date: 1927-04-11
Publication date: 1928-01-24
Anticipated expiration: 1945-01-24

Description

Jan. 24, 1928. 1,557,040

W. SCHMID ELECTRIC SWITCH Filed April 11. 1927 \g' I Patented Jan. 24, 1928.

WILLIAM SGHMIID, BBONSQNQMICHIGAN, ASSIGNOR TO HARRY A.

IBBONSON, MICHIGAN.

DOUGLAS, 01'' ELECTRIC SWITCH.

Application tiled April 11, 1927. Serial No. 182,782

4 My invention relates to switching devices wherein reciprocable rods are employed for effecting their operation.

The contacts or switch elements of such devices are mounted upon carriers which'are usually inthe form of casings which enclose the contacts or switch elements and through which casings the rods pass to be operable from the exterior of the casings, the rods having switch controlling elements thereon, usually in the form of collars, whereby the circuits are adjustable, the rods being normally 'sprin pressed in one direction to provide norma adjustments for the switches and being operable against the force of the springs to afl'ordalternative adjustments for the switches. Switches of this type find wide employment in automatically controlled stop lights upon the rear ends of automotive vehicles.

It is the object of my invention to provide a simplified assembly of the switch enclosing casings or earners, the rods, and the springs upon the rods. In carrying out. my invention, the switch controlling member comprises a reciprocable rod, a switch controlling element upon and in normally fixed "relation to the rod, an abutment upon the, rod and spaced longitudinally of the rod apart iromsaid switch controlling element, a bearing collar surrounding and in sliding relation to said rod and interposed between said circuit controlling element and abutment and engageable with the abutment, and

" a coiled spring surrounding the rod and located between said switch controlling element and bearing sleeve and serving to engage said sleeve and abutment. The carrier is employed for the switch, said bearing sleeve and carrier being formed to have holding engagement upon relative movement, of the rod and carrier transversely of the rod. in the preferred embodiment of the invention,.the switch carrier is in the form of a two-part casing whose parts have edge portions that meet in a plane that includes 1 the axis of the rod. There is desirably an additional bearing sleeve, one sleeve being disposed at each end of the rod. and these hearing sleeves have annular grooves in their cylindrical sides. The end walls of the two sections of the casings are provided with registering arcuate recesses forming circular openings through the ends of the casing through which the rod passes, the edge portions of these arcuate recesses being received in the grooves in the bearing sleeves. One end of the spring presses upon the first aforesaid bearing sleeve and the other end of the spring presses upon a second abut- I ment provided upon the rod to normally maintain the first abutment in engagement With the first bearing sleeve. The second bearing sleeve is free to slide on the rod whether the switch controlling member is assembled with the casing or not whereby the distance between the bearing sleeves is easily adjusted to enable these bearing sleeves to be engaged with the casing by the mere lateral movement of the sleeves, and the rod carrying them, transversely of the rod.

I will explain my invention more fully by reference to the accompanying drawing in which Fig. 1 is a plan view of the preferred embodiment of the invention; Fig. 2 is a side v ew; Fig. 3 is a longitudinal sectional view; Fig. 41s a bottom view of the upper or cap section of the casing showing the switch contact structure mounted therein; and Fig. 5 1s a perspective view illustrating one of the casing sections and the switch controlling member in separated relation, this figure indicating the ease with. which the switch controlling member and thecasing may be assembled.

'lhe switch controlling member includesa reciprocable rod 1 made preferably of iron or steel. Two abutments or sets of

abutments

2 and 3 are desirably integrally formed with the'rod and are spaced apart longitudinally of the rod. A coiled spring 4 surrounds the rod and is disposed between said abutments. A switch controlling collar 5, formed preferably of insulation, is slipped upon one end of the rod, together with a washer 6, before the abutments on this end of the rod are formed, said washer being interposed betweensaid collar and the abut Ill tion to the rod, the abutments'3 being be-' tween the collar 5 and this second bearing sleeve 8. Additional abutments 9 are provided near the end of the rod adjacent the sleeve 8 to prevent this sleeve from dropping away from the rod when the switch controlling member is not assembled with the balance of the structure.

The space between the abutments 3 and 9 is sufiicient to permit the bearing sleeve 8 to be moved toward and from the bearing sleeve 7 whereby the two bearing sleeves may be readily spaced apart the exact distance they are to occupy when they are held by the switch carrier or casingthat will now be described. This switch carrier or casing is made in two sections, one a cap section 10 and the other a mounting section 11, the two casing sections meeting upon a plane that contains the axis of the rod when the rod is assembled with the casing as will be described. The end walls of the

casing sections

10 and 11 are formed with registering arcuate recesses 12 which define circular openings in the end walls of the casing when the casing sections are assembled. In the process of assembling the casing sections, the bearing sleeves 7 and 8 arerelatively adjusted as hitherto described to bring the annular grooves 13 in the sides of the hearing sleeves into register with the end walls of one of the casing sections, say the casing section 10, whereafter the edge portions of the arcuate recesses 12 in. this casing section 10 are engaged within the grooves 13 merely upon relative movement o'l said casing section and rod transversely of the rod. When the bearing sleeves 7 and 8 have thus been assembled with one section of the casing, the other section of the casing is similarly engaged within grooves 13 whereaiter the two casing" sections are assembled in lined relation.

A illustrated, the casing section 10 is formed with ears 1e that are passed through openings formed in the wines 5i and 16 that project from the longitudinal margins of the casing; section 11. these cars being; thereafter turned into clinching engagement with said win s, as illustrated most clearly in Fifi. 2. end walls of the casing: now firmly hold hearing sleeves 'l' and 8 in lined relation so that the rod 1 may be pulled upon or moved against the fierce of the an no" 4i by means of a tie member 1'2 which is suitably coupled with oralre or other travel cont-rolling" lever on the automotive vehicle. The collar to control a switch. The switch sl: inclusire oi two contact springs 18 and 19 which are suitably mounted upon and insulated from the section 10 of the casing, the casing being preferably metallic. These contact springs are provided with suitable binding posts 20 and 21 whereby the

circuit wires

22 and 23 that are included in the stop light circuit are connected with said springs. Assuming that the stop light is controlled by the brake lever, when the brake lever is applied, the rod 1 will be moved to the left against the force of the spring 4, the collar 5 then pressing the spring 18 against the spring 19 to close the stop light circuit. When the brake lever is released, spring 1 will restore the collar 5 to its idle position, the resilience of the spring 18 then moving this spring to an open circuit position. I hate herein disclosed one use to which my switch may be put, it being obvious, however, that the switch of my invention may be otherwise used.

Changes may he made without departing from the invention.

Having thus described my invention, I claim:

1. The combination with a controlling member comprising :1 reciprocable rod carryine' two ahutments spaced apart longitir dinally oi the rod, a coiled spring surrounding the rod and disposed between said abutments, a switch controlling collar surrounding the rod and interposed between one oi the aliutments and one end of said spring which presses the colla against this abutment. a laterally grooved hearing sleeve surrounding and in sliding" relation to the rod and interposed between the other abutment and the other end of said spring which adapted to effect engagement between this abutment and hearing;- sleere, and a second laterally grooved hearing electe surrruuuliug; and in sliding; relation to the rod. the abutment that is pressed upon h said collar being between this collar and said second hearing sleeve; cl a circuit mutrollina switch engageahle and brought into circuit. changing adjustment by said collar accordinp o the position at said rod: and a carru said switch having; portions enterilu grooves in the sides oi said bearingtzlee E2. The combination "with a controlling member comprisinrecipromihle rod. a switch controlling ncnt upon and in u mally listed relation Hi the roll. an abutment upon the rod and spaced l' of the rrd apart lroru said an ch roellrul r element. a laterally grooved hearing surround lltl relation w and in d hetwec and tilllllli rod and 1r ltl 1 able roun d1 switch.

lltl

Q lltl abutment, and a second laterally grooved bearing sleeve surrounding and in sliding relation to the rod, said switch controlling element being between the spring and this second bearing sleeve; of a circuit controlling switch engageable and brought into circuit changing adjustment by said switch controlling element according to the positionof said rod; and a carrier for said switch having portions entering the grooves in the sides of said bearing sleeves.

, 3. The combination with a controlling member comprising a reciprocable rod carrying two abutments spaced apart longitudinally of the rod, a coiled spring surrounding the rod and disposed between said abutments, a switch controlling collar surrounding the rod and interposed between one of the abutments and one end of said spring which presses the collar against this abutment, and a laterally grooved bearing sleeve surrounding and in sliding relation to the rod and interposed between the other abutment and the other end of said spring which is adapted to efi'ect engagement between this abutment and bearing sleeve; of a circuit controlling switch engageable and brought into circuit changing adjustment by said collar according to the position ofsaid rod; and a carrier for said switch having a portion entering the groove in the side of said bearing sleevej 4., The combination with a controlling member comprising a reciprocable rod, a switch controlling element upon and in normally fixed relation to the rod, an abutment upon the rod and spaced longitudinally of therod apart from said switch controlling element, a laterally grooved bearing sleeve surrounding and in sliding relation to said rod ahd interposed between said circuit controlling element and abutment and engageable with the abutment, and a coiled spring surrounding the rod and located between said switch controlling element and bearing sleeve and serving to engage said sleeve and switch controlljng element; of a circuit controlling switch ,engageable and brou ht into circuit changin'g adjustment by sea switchcontrolling element according to the position of said rod; and acarrier for said switch having a portion entering the groove in the side of said bearing sleeve.

5. The combination with a controlling member comprising a reciprocable rod carrying two abutments spaced apart longitudinally of the rod, a coiled spring surround ing the rod and disposed between said abutments, a switch controlling collar surrounding the rod and interposed between one of the abutments and one end of said spring which presses the collar against this abutment, a bearing sleeve surrounding and in sliding relationto' the rod and interposed between the other abutment and the other end of said spring which is adaptedto efiect engagement between this abutment and hearing sleeve, and a second bearing sleeve surrounding and in sliding relation to the rod, the abutment that is pressed upon by said collar being between this collar and said second bearing sleeve; of a circuit controlling switch engageable and brought into circuit changin adjustment by said collar according to the position of said rod; and a carrier for said switch, said bearing sleeves and carrier being formed to have holding engagement upon relative movement of the rod and carrier transversely of the rod.

6. The combination with a controlling member comprising a reciprocable rod, a switch controlling element upon and in normally fixed relation to the rod, an abutment upon the rod and spaced longitudinally of the rod apart from said switch controlling element, a bearing sleeve surrounding and in sliding relation to said rod and interposed between said circuit controlling element and abutment and engageable with the abutment, a coiled spri 11g surrounding the rod and located between said switch controlling element and bearing sleeve and serving to engage said sleeve and abutment, and a second bearing sleeve surrounding and in sliding relation to the rod, said switch controlling element being between the spring and this second bearing sleeve; of a circuit controlling switch engageable and brought into circuit changing adjustment by said switch controlling element according to the position of said rod; and -a carrier for said switch, said bearing sleeves and carrier being formed to have holding engagement upon relative movement of the rod and carrier transversely of the rod.

7 The combination with a controllingmember comprising a reciprocable rod carrying two abutments spaced apart longitudinally of therod, a coiled spring surroundmg the rod and disposed between said abutments, a switch controlling collar surrounding the rod and interposed between one of theabutments and one end of said spring which presses the collar againstthis abut ment, and a bearing sleeve surrounding and in sliding relationto the rod and interposed between the other abutment and the other end of said spring which is adapted to efl'ect engagement between this abutment and bearing sleeve; of a circuit controlling switch engageable and brought into circuit changm adjustment by said collar accordmg to t e position of said rod; and a carrier for said switch, said bearing sleeve and carrier being formed to have holdin engagement upon relative movement the rod and carrier'transversely of the rod.

8. The combination with a controlling member comprising a reciprocable rod, a i

mally fixed relation to the rod, an abutment upon the rod and spaced longitudinall of the rod apart from said switch contro in element, a bearing sleeve surrounding Ian in sliding relation to said rod and intery posed between said circuit controlling element and abutment and engageable with the abutment, and a coiled sprin surrounding the rod and located between said switch controlling element and bearing sleeve and serving to engage said sleeve and abutment; of

upon relative movement of the rod and car rier transversely of'the rod.

a coiled spring surroundin 9. The combination with a controlling member com risin a reciprocable rod, 2. switch contro ing e ement upon the rod, and the rod and pressing said switch contro ing element at one spring end in one direction;. of a circuit controlling switch engageable. and

brought into circuit changing ad ustment by said switch controlling element according to the position of. said rod; a carrier for said switch and pressed upon-by said .spring at the other s ring end; and 1a bearing sleeve for'said ro sald carrier and'bearing sleeve being formed to have holding engagement upon relative movement of the rod and carrier transversely of the rod.

In witness whereof, I hereunto subscribe my name.

WILLIAM SCHMID.