US1296101A - Spark-plug intensifier. - Google Patents

Description

F. G. MEYER.

SPARK PLUG INTENSIHER. APPLICATION FILED FEB.8| ISIII.

l ,296,101 Patenwd Mar. 4,1919.

` irai) s FRED G. MEYER, 0F DETROIT, MICHIGAN.

SPARK-PLUG- IN TEN' SIFIER.

Spcification of Letters Patent.

Patented Mar. d, 1919.

Applicationuiea February s, 191s. serial No. 216,061.

e it known he county of Wayne and Sta e of Michigan, have invented a new and useful Sparklug Intensiier, of which the following is a specification.

This invention relates to spark intensifiers especially adapted for use in the ignition circuits for the spark-plugsof internal combustion engines.

- he general object of the invention is to provide a comparatively simple and eliicient containing a visible spark gap lfor introduction intol the ignition circuit and connecten with the spark-plug, which will through', said body is a should be equal to or ing the terminal of an he 'either of serve to intensify the spark at the plug and enable the condition thereof to be readily observed.

A special object of the present invention is to provide a device of this character of improved structural formationin .which the parts will be comparatively few in number and extremely simple to machinel and assemble, and which as a whole will be readily attacliable, 'thoroughly serviceable and efficient in operation `and less liable to breakage or disarrangeinent than the usual devices of this c aracter.

Further objects and advantages will appear from the following description of a preferred embodiment of the invention as illustrated in the accompanying drawings, and in wvhich:

Figure 1 is a side elevation of dying my invention, s

ignition circuit cable with an ordinary spark plug.

Fig. 2 is a view in elevation of the body andend portions of the Vdevice disengaged.

Referring to the several parts by theicharacters of reference leading thereto, 41 represents a cylindrical barrel-sliaped body Imember of insulating material, which is pijfeiably formed of vulcanized rubber or ard liber to render it substantially non-breakable, an inserted in abo formed axially transparent sleeve or tube'12iof insulating material which may glass or sheets of mica rolled .the length of which slightly less than that to form a cylinder j the body.

'Fjecting tongue 17 of the body so as not to protrude beyond the ends thereof.

Formed centrally and radially through 1 is a plurality of apertures 3 which are intersected and abridged by the transparent sleeve 2 and form sight-.windows through which the interior thereof may be observed. The ends of this body member, y fianged4 respectively received are formed with annuwhich are inclosing caps 4 and 5 lar shoulders 6 about which the fianges 7 of said caps are rolled or pressed into clam ing engagement to prevent withdrawal therefrom, and formed integral with the innerfaces of said caps adjacent the flanges thereof are laterally projecting lugs 8'which are received by and interlocked Iwith registering peripheral notches 9 formed in the shoulders 6 to retain tive rotation thereon.

Each of the caps 4 and 5 has formed integral with the innerface thereof a central laterally projecting hub 10, which hubs Vextend snugly into the respective ends of the tube 2 so as to close and seal the ends of said tube to form an air-tight chamber therein. Extending centrally from the hub il? to a point intermediate the ends larly anchored to extend through the cap 5 and its hub 10 into the tube 2 in axial alineform an passage of a spark in thepassage of the electric current through said outer end of the electrode The cap 4 is y prohaving an aperture 18 therethrough for the reception of the binding post 19 and engagement with the clamping-nut 20 of a spark plug 21, as shown in Fig. 1. By this means the device is con- 'the current passing thereto the spacingof the electrodes to provi proper spark gap being predetermined andthere being no provision for adjustment, disnected in the the device.

It will parts in the present sembled are securely be observed that the principal structure when 'asheld relatively fixed, 'de the i arrangement of the parts'through tamperin an air-tight chamber lparent tube and b y embracing which is comparatively fragile,

ing by unskilled users is avoided. It Will also appear within the transsa'id tube, within the fibrous body provided with sight openings, said electrodes will be kept clean and free from any substances that might aHect their functioning, and the condition of the spark may be readily observed through said openings, While the body' member will not only serve to reinforce and protect said tube against breakage but .lso affords a strong, yet yieldable foundation upon which to firmly clench the end caps and securely tie the parts together.

I claim:

1. An electric-igniter intensifier comprising a cylindrical insulating body member having annular peripheral shoulders at opposite ends thereof and provided with an axial bore therethrough and a radial sight opening intersecting said bore intermediate said ends, a transparent member abridging within said bore, a cap for said opening each end of said body member having a bendable flange for engagement with the shoulder thereof and provided with a hub portion extending into the bore -o'f said body member, and sparking electrodes respectively anchored in said caps and extending into said bore in spaced axial alinement adjacent said opening.

2. An electric-igniter intensifier comprisin a cylindrical body member having annu ar peripheral shoulders at opposite ends thereof and provided with an axial bore therethrough and a radial sight opening intersecting said bore intermediate said ends, a transparent `insulatin sleeve extending through said bore and a ridging said sight opening, a cap for each end of said body Copies of this patent may be obtained for that by inclosing the electrodes v Afor the reception. of spark-plug,

five cents each, by addressing the Washington, D. C3?

-axial alinement adjacent said si ht opening.

3. An electric-igniter intensi er comprising a cylindrical insulating body member having an axial bore therethrough and a radial sight opening intersecting said bore, a transparent member abridging said opening, a cap iixedly secured over each end of said `body member and having a hub portion extending into the end of said bore, one of said caps having an integral laterally extending tongue provided with an aperture the binding-post of a a sparking electrode anchored in the hub portion of said cap and extending init-0 said b ore yin opening, a second sparking electrode spaced axially from said first named electrode and anchored to extend through the other of sai caps, the outer end of said second electrode bein screw-threaded and provided with a binding vnut for engagement with the terminal of an electric conductor. 4 4L An electric-igniter intensifier comprising a cylindrical insulating body member having .annular peripheral shoulders at opposite ends thereof and provided with an axial bore therethrough and a radial sight -opening communicating with said bore, a

transparent insulating y sleeve extending through said bore and abridging said opening, a cap for each end of said body member having a flange engaging the shoulder thereof and provided with a hub portion extending into the end 'of said sleeve, one of said caps having an apertured tongue for engagement with a spark-plug, a sparking electrode anchored in the hub portion of said cap and extending into said sleeve adjacent said sight opening, and a second sparking electrode spaced axially from said rst named electrode and anchored to extend through the other of said caps, the outer end of said second electrode' being screw-threaded and provided with a' binding nut for engagement with the terminal of an electric conductor.

In testimony whereof I sign this specification. v

vFRED e. MEYER.

Commissioner of latents,

line with said sight -i dao'

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