US983738A - Spark-plug connector and switch. - Google Patents

Description

G. W: MANVILLE.

SPARK PLUG CONNECTOR AND SWITGH. APPLICATION FILED APR.5,1910.

983,738. 7 Fat-6mm Feb.7,1911.

- State of Pennsylvania,

' operating, or the tures of construction and enonen w. MANVILLE, or 'rowAnnA, @E'NNSYLVANIA.

SPARK-PLUG CONNECTOR AND SWITCH.

Specification of Letters Patent.

Patented Feb. 7 ,1911.

Application filed April 5, 1910. Serial No. 553,584.

To all whom it may concern: 7

Be it known that I, GEORGE W. MAiWILLE, a citizenof the United States, residing at Towanda, in the county of Bradford and have invented new and useful Improvements in SparkPlug -Connectors and Switches, of which the fol- "lowing is a specification.

This'invention relates to devices for attaching circuit wires to the term nals of spark plugs, either of the jump spark or the make-and-break type.

The invention has for one of its objects to improve and simplify the construction of devices of this character so as to comparatively simple and inexpensive to manufacture, reliable and efficient in use, and so designed as-to be quickly attached or detached without danger of injuring the spark plug or altering the positions of the electrodes.

Another object of the invention is the provision of a connector that embodies a switch, whereby the spark plug can be tested from time to time to see whether it is strength of the current may be determined by the spark produced 7 by holding the switch partially open.

Another ob ect of the invention is the provision of combined connector and testing device which includes a metallic tip adapted to be applied to the ungrounded electrode of the spark plug, and to also form means for attaching the device to the spark plug so that the contact of. the device can engage the tip for completing the circuit and while the contact is thus engaged, the device will be locked in position.

\Vith these objects in View, and others as will appear as the description proceeds, the invention comprises the various novel feaarrangement 0 parts which will be more, fully described hereinafter and set forth with particularity in the claims appended hereto.

' In the accompanying drawings,which illustrate one embodiment of the invention Figure 1 is a side View of the combined connector and testing device applied to a spark plug. Fig. 2 is a perspective view of the device. Fig. 3 is a perspective View of the combined electrode tip and attaching means fort-he device.

Similar reference characters are employed to designate corresponding parts throughout the several views.

' ball 5.

- connectionwith the lugs, the advantages of the COIlStl'llCtlOIl' and leferring to the drawing, A designates a spark plug which, in the present instance, is of the jump spark type but it 1s to be understood that a niake-and break plug may be used in connection with the invention. The ungrounded electrode 1 .of the spark plug is provided with a metallic tip a, which serves as means for attaching the combined connector and testing device B to the spark plug.

the fixed electrode, andabove the base is .a non-circular stem 3 thatv is surmounted by an enlarged portion 4: terminatingin a The base 9. andenlargement t provides spaced shoulders Gbetween which 'fits the insulating supporting arm 7 of" the device B, the said armhaving one end bifurcated to form members 8 which straddlethe stem. .On the outer end of the arm 7 is a metallic standard 8 that is provided with, a screw 9, by which the circuit wire 10'is connected and on the upper end of the standard is pivotedjit 11. a lever12 which.

is also of metal, and En this lever, are spr ng contacts 13 spaced apart to engageopposite sides of the portion 5 of the tip a.

outer end of the lever is provided with a handle 1 1 of insulating material for per-v mitting the lever to be readily manipulated without receiving a shock.

\Vhen the device B is applied, the spring contacts .13 engage the tip a so that the device will be locked on the spark plug. When it is desired to remove the device B, it is merely necessary to first raise the lever 12 to disengage the contacts 13 from the tip and then by a lateral or horizontal movement, thearm 7 can be slipped over the tip a. To apply the device B, the arm is first engaged with the tip aand then the lever depressed to engage the spring contacts 13 with the tip. Whenever it is desired to test the spark plug to see whether it is operating eiiectively, the lever 12 can be raised slightly to separate the spring contacts from the ball 5 gap will be created across which a spark will jump if the electrodes of the spark plug are clean. Also by the intensity of the spark between the contacts 13' and ball 5, it can be determined.

From the foregoing description taken in accompanying drawof the method of operation will be readily This tip has a, threaded base 2 into which engages the upper end-0t The and in doing this, a slight apparent to those skilled in the art to which the-inventionirelates, and while I have de scribed the principle of operation of the invention, togeter with the device which I now consider to be the best embodiment thereof, -I desire to have it understood that the device shown is merely illustrative and that such changes may be made when dehe claims. What Icla'im as new and desire to secure "sired as, are within the scope of t by Letters Patent 1s:

1. The combinationof a spark plug including an electrode, and a nut on the outer end of the electrode, with thecOmbined coni lectoran d switchcompri'sing an insulating supporting arm fastened to the nut, and a contact movably mounted on the arm and shaped to grip the nut to connect the spark plug in circultand to test the condition of the plug or circuit.

2'. The combination of a spark plug including an electrode, a metallic tip on the outer end of the electrode having spaced shoulders, a supporting arm of insulation slidably' engaged between the shoulders, a swinging metallic lever mounted on the arm, means for connecting the lever with a conductor, and a contact on the lever arhearse ran ed to engage the tip to connect the elec- 89 tro e in circuit and to lock the arm on the tip. .7 1

3. The combination of a spark plug in- Witnesses eluding an electrode, end of the electrode, base, a stem connected non-circular cross sect connected with the s ball, with a combined detachably mounted 0 same comprising an insulati cber fitting between the ment of the ti p and enga thereof a metallic contac ed on the said member a gage the ball tachment of the member for connecting the electro a conductor connected wi 4. A device of the cla prising a tip adapted t spark plug electrode, an ing arm detachabl a lever mounted o of the tip 3 911g 11 the conductor, spaced s by the leve engagement with the connecting the lever in of current.

In testimony whereof I afli in presence of two witnesses.

GEORGE W. MANVILLE r and mov'ab E. J. Barnes,

and a tip on the outer said'tip including a with the base and of ion, an enlargement tem and including connector and switch park plug, the ng b baseand enlargeged with the stem t element support-' nd arranged to'enfor preventing defrom the tip and de in circuit, and th the element. ss described, como besecured to a insulating s'upport-. aging with the tip,

arm'an'd formin g cont-acts carried 1e into and out of tip, and means for circuit with a source x my signature

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