US966767A - Priming attachment for spark-plugs. - Google Patents

Description

W. c. REYNoLDs.

PRIMING ATTACHMENT PoR SPAR PLUGS."

\ APPLlIOATIOH FILED DEO. 17, 1808, 966,767,

Pantea Aug. 9, 1916.

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UNITED STATES PATENT OFFICE.

WILLIAM c. REYNOLDS, OFAALPENA, MICHIGAN.

PRIMING ATTACHMENT FOR SPARK-PLUGS.

To all whom 'it may concern: v

Be it known that I, WILLIAM C. REY- NOLDS, a citizen of the United States, residing at Alpena, in the county of Alpena, State of Michigan, have invented certain new and useful Improvements in Priming Attachments for Spark-Flu s; and I do declare the following to be a ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, andI to the figures of reference marked thereon, which form a part of this specification.

This invention relates to a priming attachment for 'spark plugs of the type commonly employed in internal combustion engines, and consists in the construction and arrangement of parts hereinafter more fully -set forth and pointed out particularly inthe claim.v v

The primary object of the invention is to provide simple and efficient means for intro.- ducing a prlming charge into the explosion chamber or cylinder of an engine, the arrangement being such as to automatically prevent the escape through the priming device of any of the' gases under pressure created by the explosion within the cylinder.

A further object is to so connect the priming attachment with the sleeve of 'the spark plug as to afford a direct passage for the gasolene or other explosive fluid, obviating the liability of the passage becoming choked or clogged.

A further object is to so form said passage as to enable it to be readily cleaned.

The above objects are attained by 'the structure illustrated in the accompanying drawings, in which n Figure 1 is an elevation of a spark-plug having my im roved priming attachment, showing said p ug screwed into the wall of the cylinder or combustion chamber of an engine. Fig. 2 is a similar view showing the sleeve of the plug and the priming attachmentin section. Fig. 3 is an enlarged view in section, showing the sleeve and priming attachment with the ball check valve removed from the priming cup, and a portion of the sleeve'broken away.

Referring to the characters of reference,

1 designates a"`section of the wall of a cylin`- der or combustion chamber which is bored and tapped for the reception of the screw- 'a cup 9 which is internallgy threade Specication of Letters Patent. Patented Aug. 9, 1910. o Application ined December 17, 190s. seria1No.'4c7,955.

threaded sleeve 2 of the spark plug, the outer end of said sleeve being formed for the application of a wrench, as shown at 3. Within the sleeve`2 is the ordinary porcelain core 4 commonly employed in spark plugs through which passes one of the electrodes 5, the wall of the sleeve 2 serving as the other electrode, as will be well understood.` To confine the porcelain core within the sleeve of the plug, a gland 6 is 'employed which screws onto the up r threaded end 7 of said sleeve, al1 of whiche in the art.

Projecting fromthe up er end of the sleeve and preferably formed integral therewith is a bracket 8 carryin at its up er end at its upper end, as shown at 10. Formed through the bracket `8 and connecting the bottom of the c p19 with the interior of the sleeve is a straig t passage 1l for the flow of gasolene, or other explosive Huid. The position of the assa 11 is such as to enable it to be rille through the cup 9, thereb obviating the necessity of coring. and a ording a passage without an an le or bend therein, thereby reducing the lia ility of clogging to the minimum. Should the passage 11 become clogged in anr manner,

'or from any cause, it may be readl y cleaned by passing a small instrument through said passage from the bottom of the cup 9.

- To provide for closing the upper end of the cup 9 a valve case 12 is emp oyed which is internally threaded, as at 13, to screw into the top of said cup. The top of the valve case is conical and is rovided with a central opening which is dlosed by a ball valve 14 seated therein and held upon its seat b a coiled spring 15 which supports said bal The lower end of the-spring 15 rests upon .the bottom 16 ofthe casethrough whic a central aperture 17 for the passage of the combustible Huid into the cup 9. The case 12 is provided with a flange 18 `formed to enable a wrench to be1 applied thereto for the purpose of screwing said case into the cu By pressing downwardly upon the ball 14 with the spout of a can, said ball will be unseated sufficiently to enable the introduction of said spout into the case 12 and the disconstruction is common o charge thereinto of a priming charge of I combustible fluid. Upon the withdrawal of `said spout, the spring "15 will return the valve to its seat owing to the 'concaved under face of said cup. From the valve case 12 the fluid lows intdthe cu'p and thence through the passage 11 into the cylinder or combustion chamber of the engine through the space 19 between the core and theinner wall of the sleeve. The gases created by thel explosion of a charge in the cylinder of the engine cannot escape through the passage 11 and the cup, owing to the fact that any pressurewithin said passage or cup only serves to force the ball more firmly onto its seat.

By the use of this device a very simple and eiicient means is provided for introdue` ing a priming charge into the cylinder of an engine without removing the spark plug or detaehing any part connected therewith.

Havin thus fully set forth Amy invention, what I c aim as new anddesirel to secure by Letters Patent, is

A spark plug sleeve-having a projecting resting on the bottom of said cap and en-4 gaging said ball.

In testimony whereof, I sign this specification in the presence of two witnesses.

WILLIAM C. REYNOLDS. Witnesses:

I. G. HowLETr, O. B. BAENZIGER.

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