US860710A - Sparking device for explosive-engines. - Google Patents

Description

No; 860,710. PATENTED JULY 23, 1907. W. A. VAUSE. SPARKING DEVICE FOR EXPLOSIVB ENGINES.

APPLICATION FILED MAR.10.1906.

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PATENT OFFICE.

WILLIAM A. VAUSE, OF COLUMBUS, OHIO.

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Specification of 'Letters Patent.

Patented July 23, 1907.

Application filed March 10, 1906. Serial No. 305,203.

To all whom it may concern:

Be it known that 1, WILLIAM A. V .wsn, a citizen of the United States. residing at Columbus. in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in SparkingDevices for Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

The objectof this invention is to provide a. simpler, more effective and durable sparking device for explosive engines than those heretofore proposed; and the invention consists in the construction herein shown and described, the invention not being confined in its embodiment to precisely the forms shown in the accompanying drawings. 7

In said drawingsFigure l is a front end view; Fig.

2 is a. sectional view on the line :r.r of Fig. 1; Fig. 3

is a sectional view on the line g,'y of Fig. 2, parts being left in full; Fig. 4 is a sectional view on the line 2-2 of Fig. 3 with parts shown in full, and Fig. 5 is a detail view of the arm for adjusting the device to control the time of sparking. p

In the several views 1 designates a carrier provided with a socket 2 for attachment to the cam shaft of the engine. Pivoted to this carrier on a' fulcrum 3 that stands in a planeat right angles to the axis of rotation of the carrier is a bent lever 3 having attached to its upper end as shown, a small shaft or bearing 4, said shaftor hearing extending approximately parallel to the axis of the carrier.

5 designates contact wheel or roller that is journaled to rotate on the shaft or hearing 4. A coiled spring (5 secured to the carrier and to the lower end of the lever 3.11s shown, tends to throw the contact roller outwardly from the axis of rotation of the carrier.

7 designates an annulus of insulating material provided with contact blocks 8 havingtheir inner surfaces flush with the inner surface of the annulus. This annulus is secured between a flange on a collar 9 and a cup shaped cap 10, all forming a closed chamber.

The carrier 1 is journaled in the collar 9; and to relievethis collar of friction and wearing action by'the outward pressure of the contact roller, the carrier is also journaled in a central bearing provided in the cap piece 10.

It will be observed that by this construction the parts forming the closed chamber are supported on opposite sides of the revolving c ntact piece.

The periphery of the contact roller is curved or formed in cross section to provide anarrow bearing,

and that face of the said roller which is more remote from the fulcrum 3* made convex. The small shaft or hearing 1 upon which thc contact roller is mounted is somewhat longer than the thickness of the roller.

The said roller, therefore, has a play laterally with respect to itself on the hearing. The narrow curved contacting rim or tread of the roller penetrates through oil or other foreign things on the surface of the contact blocks 8 and thus insures an effective contact. The play of the roller on its shaft tends to keep thecontact surfaces clean and to produce an even wear of the parts. As the force exerted by the spring 6 upon the roller causes the roller to move outwardly in an arc of which the fulcrum 3 is the center, the wear on the roller will be toward the inner or convex face, and as the surface wears down the fact that the face is' c0nvexed prevents contact of the roller with that part of the carrier adjacentsaid face.

The contact blocks 8 are crescent shaped in cross section and are seated in corresponding sockets in the insulating annulus. The number of blocks is'inade to conform to the requirements of the engine used, the sparker shown being for a four-cylinder engine. Electrical connection is made as usual through posts 11 connecting the contact blocks and wires leading I to the explosion chamber.

The chamber carrying the insulating annulus is provided with the usual arm 12 whereby it may be turned or adjusted to pry the time of sparking.

What I claim and desire to secure by Letters Patent is:

. 1. In u sparking dcvic :"or explosiv engines. the combination with a rotary carrier. of a luv-r fulcruulcd to have the plane of its oscillation substantially longitudinal with reference to the axis of rotation of the carrier. :1 contact device on said lever. and an insulating annulus conraining a contact piece against which the contact device on the lever operates.

2. In a sparking device for explosive engines, the combinntion with a rotary carrier. of a lover fulcrulned to have the plane of its oscillationsubstantially longitudinal with reference to the axis of rotation of the carrier. a contact device on said lever. a spring to not on said lever to throw the contact device thereof outwardly. and an insulating annulus containing a contact piece against which the contact device on the ever operates.

Ii. in a sparking device for explosive engines. the comhinatlon with a rotary carrier. of a lever fulcrumcd to have the plane of its oscillation substantially longitudinal with reference to the axis of rotation of the carrier. :1 contact wheel journalcd on said lever to rotate in a plane substantially at right angles to the plane of oscillation of said lever. and an insulating annulus containing a contact piece against which the rotary contact piece operates.

l. In a sparking device for explosive engines. the com hination with a rotary carrier. of a lever fulcrumed to have the plane of its oscillation substantially longitudinal with reference to the axis of rotation of the carrier. a bearing on said lover. a contact device mounted on said hearing nnd having a play outwardly or axially thereon. an insulatingannulus containing a contact piece against which the contact device of the lover operates.

5. In a sparking device for explosive engines, the com bination with a rotary carrier. or a lover l'ulcrumed to have the plane of its oscillation substantially longitudinal with refm'encs w th? axis of rqtation of the carrier, mid bearing and having a pin out bearing on said levefl q contact whee! journaled on said on. saidyvhecl being convcx m hearing and having a play outwardly or axially thereon, fulcrum of the lever. andf-an insulating annulus containing a contact p'icce In festimony whe reof l aliix m 1v 5 against which the Contact wheel/operates. of two witnesses.

6.; In a sp i-ki g dc 'ice for explosive engines, the combinat ionwi'th a o'tal'y a tier, of a lever fulcriimed thei'eon to have the plane of its oscillation substantially longi- "VKUIQSSQS-Z tndinal witixc x'eference to the axis of rotation of the carllm'ssns R. En'rnus, 1Q riel a bearing on s irl lever, a contact wheel journnled on J BEXJ. Fmcmcnf

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