US1431082A - Switch - Google Patents

Description

H. a. AINSWORTH.

SWITCH. APPLICATION FILEDJUNE 29, 1921.

1,431,082, Patented Oct. 3, 1922.

I I'l ll 1| H h UNITED STATES.

Patented Oct. 3, 1922. 1

HARBY G. AINSWORTH, 0F KENTLAND, INDIANA.

SWITCH.

Application filed J'une 29, 1921. Serial No. 481,344.

To all whom it may concern: 1 I

Be it known that I, HARRY G. Arnswonrrr,

a citizenof the United States, residing at Kentland, in the county of Newton and State of Indiana, have invented certain new and useful Improvements in Switches, of which the following is a specification, reference being had to the accompanying drawings, and to the reference characters marked thereon, which form a part of this specification.

This invention relates to switches used in electric systems and more particularly to a switch'designed to be located outside of a garageand in the roadway, where the wheels of a vehicle may pass over it to operate the switch.

The object of theinvention is toproduce a simple, durable switch, located in a body or housing, which may be sunk or buried in the ground, but leaving projecting above the surface of the ground or roadway, a depressible button adapted for contact with the vehicle wheels.

To this end, the invention consists of the devices and combination of devices illustrated, described and claimed. r

In the drawings, Fig. 1 is a central, verti- "cal sectional view of a device embodying my invention. v

2 is a plan view, partly in section, of the housing member with the cap removed, the parts that are sectioned being upon the dotted line 22 of Fig. 1.

A is a body or housing; B the cap, and C the movable button. The housing A comprises a cylindrical or cup shaped'p'art 1,

with a lateral extension 2, and having at its upper end a horizontal flange member 3. The cover B is secured to the flange member 3 by bolts 4. Rising from the inside of the bottom wall 5 of the housing and centrally thereof, is an apertured bearing boss 6, the inner walls thereof forming a suitable supportingguideway for the lower end of a boss or plunger rod member 7. The upper end of this'rod member 7 is secured to a downwardly projecting, apertured hub or boss 8, depending from the inside of the button C." The cap or lid B is provided with a pair of bosses 9, 10, arranged in axial "alignment with the lower bearing boss 6, and being apertured, the walls thereof forming a guideway for the rod as clearly shown.

In the chamber of the housing A and surrounding the boss 6, I usually place lubricating oil which is indicated at 11. The rod 7 is centrally apertured at 12, the upper end of the aperture or passageway being turned and directed to the periphery of the rod 7. Oil will pass through a small aperture or passageway 13 into the interior of the boss 6, and up through the passageway or conduit 12. Every time the button C is depressed,

the lower end of the rod 7 acting as a plun ger, forces the oil upwardly and out through the bent upper end of the passageway 12, and thus acts as a lubricant for the rod 7,thereby fa ilitating its longitudinal movement through the cover B and bosses 9 and 10. i v

The lower portion 14 of the rod 7 is of smaller diameter than is the upper portion, thereby forming an annular shoulder at 15. 16 is an apertured bearing plate adapted to be moveddownwardly by contact with the shoulder 15 when the rod 7 is moved.

An interiorly directed lug 17 extends vertically from that wall of the body A opposite to the extension 2 of the housing or body and acts as a guideway tor the separated lugs 18, which project from one end of the plate 16. The lower end of the plate 16 is providedwith a central boss 19. 20]

is a spiral spring surrounding the boss 19 and the hub 6, one of its ends bearing upon the bottom wall 5 of the housing and its 1 other end bearing against the under surface of the plate 16.

The normal action of this spring 20 is to keep the plate 16 pressed up against the shoulder 15 of the rod 7, which shoulder in its normal position'is in the same horizontal plane as the lower edge of the boss 9. 1

On that side of the plate16, oppositethe lugs 18, is a lug21, on which'is mounted a bolt 22 having a somewhat enlarged head I 23. 24 is a switch operating arm pivotally mounted at 25 to the inside wall of the extension 2 of the housing, and having its free end bent downwardly to-connect with a laterally disposed lug 26, through which the bolt 22 may freely slide. 27 is a coiled spring surrounding the bolt 22 and having its lower end resting upon the upper surface of the lug 26 and its upperend' pressing beneath the head 23. s

In the extension 2, I provide an aperture 28 through which the positive and negative wires 29, 30, of an electric system, may be laced, to the terminals 31, 32, re-

spectively. 33 is the usual flat metal contact strip, secured to the terminal 31 and adapted to be depre sed upon the terminal 32 to close the circuit. IB-t is an insulated movalle button, adapted to actuate the contact strip 33 and 35 is a downwardly projecting lug secured to the pivoted arm 52-1: adapted to contact with and operate the button as The operation of the device will. be clearly understood. Assuming the parts to be in the position illustrated in Fig. l and the lines 30, connected up with an electric ysteni for any useful purpose, such for example, as a controlling dev'ce tor garage doors, the occupant of a car will drive so that the wheel at the vehicle will run over the button C. This will depress the button and the rod 7. The rod 7, by reason of the shoulder 15, will depress the plate 16, contracting the spring 20. The downward mo ement of the plate it? will carry w th it the tree end oi": the arm 2%, thus causing he boss to contact with the insulated button 34; which latter ill depress the strip 33 and closethe circuit between the terminals and rtt the same time, the lower end of the rod 7 will act as a plungor within the bearing boss 6 and force the oil up to lubricate the upper bearing ot the plunger rod, as before stated. As soon as pressure on the button C is released, the spring 20 will. expand and return the plate 16 and with it the rod 7 to their normal positions. This will also permit the spring 27 to expand and carry the free end of the arm 24 upwardly, thus releasing any pressure through the boss 35 upon the insulated button 34. The strip 33 will thereupon spring to its normal upper position, opening the circuit as shown in l Thedevice is exceedingly simple, has no complicated parts to get out of order, and

its operation requires no study or skill. The

button C and its plunger rod may be removed by simply lifting the rod 7 out oi? itsl'iearings and if it is desired to inspect the interior of the housing A or clean it, the cover B may be quickly and easily removed by unscrewing the screw bolts l.

I claim as my invention:

1. An electric switch comprising a housing, a removable cap, guide hearings in the housing and. cap, an exposed button having a supporting rod movable in said bearings, means for holding the rod in a predetermined position, a. pair of contact points in the housing, a connecting strip on one adapted to be pressed upon the other contact point, an insulated movable button for depressing the connecting strip, and operating connections between the supporting rod and said insulated button for actuating the latter.

2. An electric switch comprising a housing, a removable cap, guide bearings in the housing and cap, an exposed button having a supporting rod movable in said bearings, means for holding the rod in a predetermined position, a pair of contact points in the housing, connecting strip on one adapted to be pressed upon the other contact point, an insulated movable button -for depressing the connecting strip, operating connections liietween the supporting rod and said insulated button for actuating the latter, said means including a pivoted arm overhanging the insulated button.

3. An electric switch comprising a housing, a removable cap, guide hearings in the housing and cap, an exposed button having a supporting rod movable in said bearings, means for holding the rod in a predetermined posit-ion, a pair of cont-act points in the housing, a connecting strip on one adapted to be pressed upon the other contact point, an insulated movable button for depressing the connecting strip, operating connections between the supporting rod and said insulated button tor actuating the latter, said means including a plate upon and movable with the supporting rod, an arm. pivoted within the housing and over hanging the insulated button and connections between the plate and said arm.

a. An electric switch comprising a housing, a remr *able cap therefor, aligned guide bearings in the housing and cap, a supporting rod in said bearings with one end projecting above the cap, a button on the rod end, a plate within the housing dcpressible by the rod, means tor returning the plate to normal position after being depressed, a pair ot contact points within the housing, a connecting strip on one point adapted to contact with the other contact point to close a circuit, and operative means connected with the plate to actuate said contact strip.

5. An electric switch comprising a housing, a removable cap therefor, aligned guide bearings in the housing and cap, a supporting rod in said bearings with one end projecting above the cap, a button on the rod end, a plate within the housing depressible by the rod, means for returning the plate to normal. position after being depressed, apair of contact )Olllt'S within the housing, a con necting strip on one point adapted to contact with the other contact point to close a circuit, and operative means connected with the plate to actuate said contact strip, said plate returning means including a spiral spring.

6. An electric switch comprising a housing, a removable cap therefor, aligned guide bearings in the housing and cap, a supporting rod in said bearings with one end projecting above the cap, a button on the rod end, a plate within the housing depressible by the rod, means for returning the plate to normal position after being depressed, a pair of contact points within the housing, a con necting strip on one point adapted to contact with the other contact point to close a cirinwardly from that part of the wall of the cuit, and operative means connected with the plate to actuate said contact strip, said operative means including a spring controlled pivoted arm.

7. An electric switch comprising a housing, a removable captherefor, aligned guide bearings in the housing and cap, a supporting rod in said bearings with one end projecting above the cap, a button on the rod end, a plate within the housing depressible by the rod, means for returning the plate to normal position after being depressed, apair of contact points within the housing, a connecting strip on one point adapted to contact with the other contact point to close a circuit, and operative means connected with the plate to actuate said contact strip, said plate returning means including a spiral spring and said operative means including a spring controlled pivoted arm.

8. housing for a covered electric switch comprising a cast metal body, a removable cap therefor, aligned guide bearings in the cap and the lower part of the body, an extension on the body for supporting a pair of contact points, an aperture in the extension for the admission of circuit wires, and

a vertically disposed guide flange projecting body opposite the extension.

9. A vehicle operated circuit closer comprising a cup shaped housing and a removable cap upon its open end, a movable presser button and an attached rod member, an apertured boss on the cap aflfording a. guide hearing for the rod, an apertured boss on the inside of the housing to form an aligned guide bearing for the lower end of the rod, an aperture or conduit through the wall of the last mentioned boss, a conduit extending longitudinally of the rod, communicating normally at its lower end with the interior of the housing boss above the level of the aperture through the wall thereof, said rod conduit extending laterally at its upper end to communicate with the interior wall of the cap bearing boss, a pair of contact points in the housing, cooperative connections between the movable rod and one of said contact points for closing the circuit and a spring surrounding the housing boss and adapted to raise the rod to open the circuit.

HARRY G. AINSWORTH.

Witnesses CLARENCE J FLAOK, JOHN EASTER.

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