US1142212A - Timing and ignition device. - Google Patents

Description

W. W. WALKER.

TIMING AND IGNITION DEVICE.

APPLICATION FILED IAN. 16, 1914.

1,l&3,212. PatentedJune s, 1915.

2 SHEETSSHEET W. W. WALKER.

TIMING AND IGNITION DEVICE. APPLICATION FILED IAN. I6, I914.

I 1,142,212, Patented June 8, 1915.

2 SHEETSSHEET 2.

THE NORRIS PETERS 60.. FHOTO-LITHQ. WASHINGTON, D C.

ES l FICE.

WILBUR- W. WALKER, 'OF HANFORD, CALIFORNIA.

'rnvrrne AND 1GNITION DEVICE.

To all whom it may concern Be it known that I, WJLBUR W. WALKER, citizen of the United States, residing at Hanford,in the county of Kings and State of California, have invented certain new and useful Improvements in Timing and Ignition Devices, of which the following is a specificatlon.

This invention relates to explosive engines,

and consists of improved electric sparking mechanism, and controlling mechanism therefor whereby the parts of the said sparking mechanism, may be readily and easily adjusted to regulate or control the time of the spark production. I

Theobject of the invention is to provide an ignition device, the actuation of which is entirely dependent upon the rotation of the crankshaft of the engine. 7

A further object of the invention contemplates the provision of means in the nature of an auxiliary contact capable of both vertical and longitudinal adjustment to. provide, in the first instance for the regulation or control of the time of spark production, and

in the second instance, for the. final adjustment of the said contacting element fora purpose to be hereinafter fully disclosed.

The above and additional objects are accomplished by such means as are illustrated in their preferred embodiment in the accompanyingdrawings, described in the following specification and'then more'particularly pointed out in the claims which are appended hereto and form a part of this application. I I i In describing my invention in detailreference will be had to the accompanying draw ings wherein like characters denotelikeor corresponding parts throughout the several views, and in which I Figurel is an end view of aportion of an explosive engine illustrating the application of the invention thereto; Fig. 2- is a side elevation'of the device as is illustrated in Fig. 1; Fig. 3 is an enlarged longitudinal sectional view of the device; Fig. at is a section on the line 4-4: of Fig. 3; and Fig. 5 is a section on the line 55 of Fig. 3. r

Referring now to the drawings by nu meral, 1 designates, as an entirety, the explosive engine, and 2' an auxiliary shaft driven by the crank shaft (not shown) of the engine. Mounted upon one endof the shaft 2 and rotatable therewith, I provide aneccentric '3 from one ofthe lateral faces Specification of Letters Patent. Patented June 8, 1915. Application filed January 16, 1914. Serial No. 812,520.

- of which a spindle 4 projects. An arm 5 as at 7 and disposed for engagement with a l roller 8 projecting from one end of the engine cylinder, the opposite edge of the said enlargement being slightly curved as at 9 to conform to the configuration of a vertically and longitudinally adjustable contact member 10. The-upper or exposed face of the said contact 10 is disposed in the path of an arm 11 oscillatable from a point 12, the oscillatory movement of the said arm 11 being derived by reason of its engagement with the said contact, the latter being reciprocatory with'the said arm 5. Mounted upon the engine cylinder in any suitable manner and operated by movement of the arm 11, is an ignition device designated '13 comprising the usual stationary and pivoted contacts (not shown), the former of which is connected to and movable with the. .said

arm.

To provide, for the proper adjustment of the contact member 10 means including a movable carriage l i have been devised, the same, in its preferred embodiment, comprising a casing 15 through'an opening 16 of which the said contact member 10 extends.

Within the casing the said contact is fulcrumed as at 17, an adjustable thumb screw 18--being disposed for engagement with the spring normally exerting sufficient pressure upon the said member to maintain its inner end in engagement with the thumb screw 18. a The carriage 14: is longitudinally grooved or bifurcated as at 21 to provide for the reception of the arm 5 upon which the said carriage is movable, bolts or screws 22 serving as retainingelements therefor. Detachably yet rigidly secured to the arm 5, I provide a two-part bracket 23, between the parts or sections of which the said arm 5 extends, bolts 24: being provided to lock the said parts or sections together. Extendingtransversely of the bracket 23 and in a plane parallel with the longitudinal axis of the arm 5, is a longitudinally adjustable thumb screw 25, the knob 26 of which is serrated for a purpose to be hereinafter fully described. The inner end of the thumb screw 25 is rigid with the carriage 141, the attachment thereto being effected "through the medium of an extension 27 having collars 28 disposed respectively upon the, innor and outer faces of the casing 15, a cotterpin 29 extending transversely of the extension 27 and engaging the innerof the collars 28 ;serving as a lock whereby the carriage 14: is rendered immovable other than by adj1'1stmentfefl'ected by manipulation of the thumb screw 25.

The upper end of the bracket 23 is grooved as at. 30 to provide for the reception of a lever 31 fulcrumed as at 32 within the said groove, one end of the lever being adapted for engagement with the serrations of the, knob 26 to render the latter incapable of' facilitate the operation ofthe lever 31, cap 34 is provided and formed integrally with the said lever at a point directly over that engaged by the spring 33, from which it will be seen that a depression of the said spring may be readily effected.

The. construction of the device having been fully described, it now remains to set forth-in detail the operation thereof. When it is desired that-the time of spark production or ignition be regulated to time more accurately the explosion of the engine charge, the contact member 10 is adjusted,

"first by the manipulation of the thumb screw 18, and finally and more accurately, by the manipulation of the thumb screw 25. In the first instance, by reason of the engagement between the said thumb screw 18 and the contact 10, the latter is moved upon its fulcrum 17 to raise one end thereof slightly out of engagement with the curved edge of the enlarged portion 6 of the reciprocatory arm. By the raising of the contact 10, it is apparent that the stroke of the oscillatory arm 11 commences in advance of what would otherwise be the case. Byreason of the engagement between the said arm 11 and the said contact 10,.it is pa t hat th f r is o i a ed t i tact (not shown) commonjto' ignition'devices, thereby causing the said'electrode to engage the stationary electrode, the disengagement of which, by reason of the return stroke of the arm 5 and contact 10, will pro vide for the ignition ofthe engine charge.

Should the adjustment of the thumb screw, 18 prove inaccurate, and to provide for final nally adjust the carriage 14 upon the arm 5 and move the contact 10 with which itis bodily movable, into thedesired position to re ulatethe timing or control of the igni- 7 tion devicea It is apparent'from the above, taken in connection with the accompanying drawings, that thecontact 10 may be extended'a considerable distance beyond the enlargement 6 of the arm 5 by the adjustment or manipulation of the thumb screw 25; that the roller 8 serves not only as a support for the said arm but as a bearing for the beveled edge of the head 6 to facilitate in the reciprocatory movement of the said arm,

and that" accidental movement of either thumb screw 18 or 25 is rendered impossible by reason of, first, the lock nut 19, and sec- 0nd the lever 31. r

In reduction to practice, I have found the drawings and referred to in the above description, as the preferred embodiment, is the most eificient and practical; yet realizing that the conditions concurrent with the adoption of my device will necessarily vary, I desire to emphasize the factthat various minor changes in details of construction,

proportion and arrangement of parts may be resorted to, when required, without sacrificing any of the advantages of my invenand out of engaging proximity with said device, means to move said element "relatively that the form of my invention, illustrated in to said member, said member acting as a sup- 7 port therefor, and means locking said element in its various adjusted positions.

2. In combination with the ignition device of an internal combustion engine, a con-' tact. elementengageable with the said device, ernerb neaas 9 the said el ment mea sactuatable to bodily move the said support means for adjusting the element relatively to the said device, means actuatable to adjust the element independently of its support means, a spring actuated fulcrum lever engageable with the said first mentioned adjusting means for automatically locking the said support means in its adjusted position, and means actuatable to lock the last mentioned adjusting means in its adjusted position, as and for the purpose set forth.

8. In combination with the ignition device of an internal combustion engine, a member reciprocable through movement of the engine crank shaft, a carriage mounted on said member, a bracket stationary relatively to the member, means movable relatively to the bracket for adjusting the carriage longitudinally upon the member,

means operating automatically to lock the adjusting means in its adjusted position, a contact element fulcrumed to and bodily movable with the carriage, and means operating to adjust the element relatively to the carriage, said element being engageable with the said device for controlling ignition, as and for the purpose set forth.

4. In combination with an ignition device for explosive engines, an arm oscillatable upon said device, a reciprocatory arm actuatable through movement of the engine crank shaft, a roller carried by the engine and engageable with said reciprocatory arm to support the latter in operative position, a carriage adjustable longitudinally upon said reciprocatory arm, a contact movable bodily with said carriage,

arm adapted to oscillate said first mentioned arm, means carried by said carriage and disposed for engagement with said contact to provide for vertical adjustment thereof, a bracket rigid with said reciprocatory arm, means carried by said bracket and disposed for engagement with said carriage to longitudinally adjust the latter upon said arm, and means including a lever fulcrumed to said lever and engageable with said last mentionedmeans to maintain the same incapable of actuation, as and for the purpose set forth.

5. In combination with the igniting device of an explosive engine, a member movable throughoperation of the engine crank shaft, a contact element movable relatively to said member, said member being at all times in engagement With said contact element to brace the latter at its point of contact, means to bodily move said element toward and from said device, and means to lock the element in its various adjusted positions.

In testimony whereof I affix my signature in presence of two witnesses.

- WILBUR W. WALKER. Witnesses:

P. S. WALKER,

JAS. J. HIGHT.

Copies '01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, I). O.

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