US1484246A

US1484246A - Spark indicator

Info

Publication number: US1484246A
Application number: US523909A
Authority: US
Inventors: Ziegler Leonard
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-12-21
Filing date: 1921-12-21
Publication date: 1924-02-19
Anticipated expiration: 1941-02-19

Description

Patented Feb. 19, 1924.

UNITED stares insane LEONARD ZIEGLER, or NUTLEY,1\TEW JERSEY.

- SPARK IHD ICATOR.

Application'filedg December 21', 1921. Serial No. 523,909. I

useful Improvements in Spark Indicators, I

of which the following is a specification;

This invention relates to an improved spark indicator for internal combustion en- 1 inner side is a metallic switch plate 19 provided, as best shown in Figure 3, with a semi-circular opening 20 and securing the gines and seeks, as one of its'principal objects, to provide a device particularly adapted for use in connection' with motor vehicles and wherein the spark plugs of the engine of a vehicle may be tested while the vehicle 'ries a second'bolt 22 projecting at'its inner is in motion.

i A further object of the invention is to an enginemay be tested under working conditions of the engine.

And the invention has as a still further object to provide a device which will be neat and attractive in'appearanceand may be readily installed upon motor vehicles of substantially any conventional design.

Other and incidental objects 'will appear hereinafter.

In the drawings:

Figure 1 is a perspective View of my im proved indicator, I

Figure 2 is a section on the line 2-2 of Figure 4:, looking in the direction of the p 1 cularly disposed series of bolts 28 and proarrows, A V p Figure 3 is'a section on the line 3-3 of Figure 2, looking in the direction of the arrows, I r

Figure 4; is a section on the line 4+4: of Figure 2, looking in thedirection ofthe arrows,- I 1 Figure 5 is a rear elevation of the device, and V p I v t Figure 6 is a sectional view showing an improved spark plug employed in conjunction with the indicator. f

Referring now more particularly to the drawings, it will be seen that I employ a cylindricalcasing 10 having a forward end wall 11 and bent adjacent-its outer end to provide a stop flange 12. Seated in the forward end of the casing to abut the end-wall 11 is a front block 13 from which extends a centrally disposed annular flange 14 projecting from the front face 'of the block through the end wall of the casing. As particularly shown in Figure 1, the front block is secured; to said end wall by fastening devices provide a device wherein the spark plugs of T 15 and mounted in the casing at its inner end is a back block 16 secured in position by fastening devices 17. The front and back '

blocks

13 and 16 are of porcelain or other 'apprOVedinsuIating material and fitting within the casing between said blocks is a spacing ring 18 which is also preferably of insulating material. I j

Mounted upon the front block 13 at its switchf'plate isa bolt 21 extending for wardly through said block. The block carend through the opening 20 in the switch plate and mounted upon the outer ends of said bolts are electrodes 23 housed by the flange 14 andforming a spark gap therebetween.

pairs of coacting switch fingers 28 similar 'to the fingers 24:1.

Extending through the block 16 is a cirjecting through the block between said bolts is a similar series of squared sleeves 29 pro- 'vided at their" outer ends'with plates 30 engaged1by thebolts. [Each of the bolts is thus electrically connected with one of the sleeves respectively. Slidable through the

plates

13 and 16 are switch rods 31 which, at their inner end port'ions are squared to fit through the sleves 29,-the sleeves looking the rods against rotation, while at their outer ends, said rods are equipped with buttons 32. Extending from the rods are switch arms 33 each engageablebetween a pair of the switch fingers 28 respectively upon the plate 26 while, asshown'in dotted lines in Figure2, the rods may be-pulled rearwardly to engage each of said arms between a corresponding pair of the switch fingers 24: re

spectively upon the plate 19. As will be observed, I have shown the use of six of the switch rods 31, the present device being designed for use in connection with a six cylinder, engine. However, as will be at Rising from the switch plate at circumferentially spaced points thereon are PATENT oeres;

once understood, the device may comprise a greater or lesser number of rods and associated parts to meet the requirements of different engines. In practice, the device may be mounted upon the dash of a vehicle, as conventionally illustrated at 34, projecting through thedash so that the stop flange 12 of the casing 10 abuts the dash and ex tending through said flange. are appropriate fastening devices securing the indicator in position.

In conjunction with the indicator, 1 employ a spark plug of the character illustrated in Figure 6, the plug shown being typical. As will be observed, the plug comprises a shell 35threaded at its lower end for engagement in the usual spark plug orifice of an engine cylinder and extending through the shell is an insulator 36 of. porcelain or other approved materialr Surrounding the insulator are gaskets 37 and threaded into the upper end of the shell to coact with the uppermost of thesegaskets is a nut 38 removably clamping the insulator upon the shell. Extending throughtheinsulator are

electrodes

39 and 40 to the upper ends of which are connected binding posts 41 carried by an insulating cap 42 upon'the upper end of the insulator. At its lower end the electrode 39 is provided with a laterally directed portion while upon the lower end of the electrode 40 is formed a loop through which the laterally directed portion ofthe electrode 39 extends to provide a spark gap between the electrodes- As will now be understood, each of the cylinders of the vehicle engine is equipped with one of my improved plugs. Feed wires are then attached to the binding posts of the electrodes 39 of the plugs when wires are then arranged to extend between the electrodes 40 of the plugs and the several'bolts 28 of theindicator, these latter wires being indicated in Figure 2, at 43. Connected at one end to the bolt 22 of the indicator is a wire 44 which is led through the opening 25 in the plate 16 to a suitable electrical ground and connecting one of the securing bolts 27 for the switch plate 26 with said wire is a wire 45 so that said switch plate is also grounded. Normally, the several switch. rods 31, will occupy the position shown in Figure 2, so that the switch arms 33 ofsaid rods engage the switch fingers 28 for closing a circuit for each of the spark plugs through one of the wires. 43, one of the bolts 28 and one of the sleeves 29 to the ground wire 44. Thus, all of the plugs will normally be connected with therground wire so that said plugs may function. To test the plugs, the buttons 32 are grasped and the rods 31 drawn outwardly one at a time, to engage the switch arms 33 of said rods with the switch fingers .24. As each of the rods is thus drawn outwardly, the circuit of one of the plugs respectively will be closed through the plate 19 and electrodes 23 to the bolt 22 r wardly. On the other hand, shouldiany one u of the plugs be short cii'cuited to theeugine,

nospark will appear at the gapv between the electrodes 23 and accordingly, the faulty plug may be easily located. As will be perceived, I providea device wherein the plugs of the vehicle engine may be easily tested without stopping the vehicle and under 'working conditions of the engine.

Having thus described the invention, what is claimed as new is: f

1. A spark indicator. including. spaced blocks, a switch plate carried by each of said blocks, coacting electrodes upon one of" the blocks forming a spark gapin circuit with one of said plates,,and a switch rod slidable upon the blocks to selectively coact with the plates.

. 2.-A spark indicator including spaced blocks, a switch plate carried by each of said blocks, a sleeve upon one of the blocks,

and a switch rod slidable through said sleeve 7 to selectively coact with said plates,.the rod being in circuit with the sleeve. 7 V

3. A spark indicator including I spaced blocks, a switch platecarried by eachof said blocks, a terminal upon one of the V blocks, a sleeve secured by said-terminal in circuit therewith and a switch rodsl'idable through the sleeve to selectively coact with said plates.

4. A. spark indicator including spaced. 7

blocks, a switch plate carried by each of said blocks, a terminal upon one of the blocks, a sleeve extending through said block and provided at one end with a plate engaged by said terminal securing the sleeve upon the block, the sleeve being in circuit with the terminal, and a switch rod slidable through said sleeve to selectively coact with the switch plates.

5. A spark indicator including spaced blocks one provided at the front facethereof with a forwardly directed flange, coacting electrodes mounted upon said block to provide a spark gap therebetween and housed by said flange, switch plates upon the blocks. at the inner faces thereof one said plate being in circuit with said electrodes,

and a switch rod slidable through the blocks to selectively coact with said plates.

6. A spark indicator including a casing, spaced blocks removably fitting therein from one end of the casing, a' spacer be-- tween the blocks, means connecting one'of said blocks with the casing securing both blocks against displacement, and switch mechanism associated with said blocks.

7. A spark indicator including a casing provided at one end with an annular end wall, spaced blocks mounted in the casing, one of said blocks abutting said end wall and being provided with an annular flange projecting through the end wall, coacting electrodes upon said blocks housed by said flange, switch plates upon the blocks one in circuit with said electrodes, and a switch rod slidable upon the blocks to selectively H' coact with said plates.

8. A spark indicator including a casing open at one end and provided at its opposite end with an annular end wall, spaced blocks mounted in the casing closing the ends thereof, one of said blocks abutting said end wall, a spacer between the blocks, means connecting the other of said blocks with the casing [securing both blocks against displacement, and switch mechanism associated with the blocks.

In testimony whereof I afiix my signature.