US1467270A - Ignition device for internal-combustion engines - Google Patents

Description

Sept. 4, 1923. v A. ERICKSON' 'lqNnioN DEVICE FOR INTERNAL COMBUSTION ENGINES Filed July 21 191s) 5 Sheets-Sheet 1 Sept. 4, 1923. I 1,467,270

A. ERICKSON IGNITION DEVICE Fori INTERNAL COMBUSTION ENGINES Filed July 21 1919 3 Sheets-Sheet 2 l IN Sept. 4, 1923.

I A. ERICKS IGNITION DEVICE FOR INTERN AL COMBUSTION ENGINES Sl'xeets-Sheet 5 led July 21 1919 I i x NI\ZI. 7M... t

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Patented Sept. 4, i923.

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I 1,467,270 PAT-ENT' OFFICE.

ALBERT ERICKSON, OF CHICAGO, ILLINOIS, ASSIG-NOI TO SCPLI'IDORI? ELECTRICAL COMPANY, OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

IGNITION DEVICE FOR INTERNAL-COMBUSTIQN :eive'rrins.

Application filed July 21,

To all whom it may concern:

Be it known that I, ALBERT ERICKSON, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Ignition Devices for Internal-Combustion Engines, of which the following is a description, reference being had to the accompanying drawing and to the figures ofreference marked thereon.

The invention relates to new and useful improvements in ignition devices, and more particularly to an ignition device having. a fixed and a movable electrode to which current is suppliedby a magneto generator.

An object of the invention'is to provide an ignition device of the above character, wherein the fixed and movable electrodes are supported by a member or part which is readily detachable from the bracket carrying the magneto, generator, whereby new electrodes may be readily substituted. for-the old ones without requiring any changes in the bracket structure which carries the mag neto generator. c

A further object of the invention is to provide a device of the abovecharacter,v wherein the spring for holding the electrodes closed is supported by the part or member carrying the electrodes. a

A still further object of the invention is to provide a device ofthe above character, wherein the fixed electrode has a sliding detachable connection with a terminal member on the bracket carrying the. magneto generator, so that the electrodes may be separated from the magneto generator without discon necting any parts.

These and other objects will in part beobvious and will in part be hereinafter more fully disclosed. v

v In the drawings which showby way of illustration one embodiment of the invention- Figure l is a perspective view showing a portion, of an engine cylinder, the pad carried thereby, the supporting stud for the bracket carrying the magneto and the electrodes, together with the supporting means therefor; v

Figure v2 is an end view of the magneto generator showing the supporting bracket therefor;

Figure 3 is a vertical sectional, view through a portion of the engine cylinder and 1919. Serial No. 312,229.

a portion of the bracket-carrying the magneto generator;

Figure 4 is a horizontal sectional view of the same. e

The invention is directed broadly to an ignition device having a fixed and amova-ble electrode with which is associated a magneto generator for supplying current for lg; nition. by a bracket which is detachably mounted on the engine cylinder. Said bracketis formed with an opening which is adapted to register with the opening in the engine,- which is adapted to receive the spark plug;

. which includes the fixed'and movable 'electrodes and the supporting member orpart therefor. This spark plug extends out wardly away from the cylinder to the engine andinto an opening in the'bracket, said opening being shaped to con'formg'en erally to the shape of the projecting plug; and fitting snugly around the same. Said projecting plug is formed with: a shoulder which overlaps the edg e' of the opening inth bracket, so'that when the bracket is bolted on the engine cylinder, it serves also: to hold the'spark plug or support forthe electrodes in place in the engine cylinder. The spring'lfor normally holding. the' 'e'lc' 'a trodes closed is wound about the shaft carrying the movable electrode and is, there-f fore, supportedqby the member which can" ries theelectrodes. The fixed electrode has a projecting rod which" has 'a sliding engagement with an insulated terminal on the magneto bracket, which is in turn connected with the magneto generator; I 1

Referring more detail. to the. drawings, I have shown my invention as applied tofan ignition device which. includes amen-1am generator G, a fixed electrode 1, carrying a contact point 2, a movable. electrode ii," carry' ing acontact point 4:, which is adapted to en? gage the contact point 2; The fixedel'ectrode 1 is carried by a rod 5, which is mounted in; an insulating sleeve, and said A insulating sleeve isin turn mounted in, a sp'ark'plug or} supportingmember 6; The movable electrode: 3 is-carried by a shaft" Twhich islikew'ise. mounted in this spark plug: or supporting? member 6. The supporting member 6 is tapered, so as to fitsnugly the-tapered open ing in the wall of the cylinder, whi'cli cylinder is indicated atC in the drawin*gs. Q11 the outer endof the'shaft athere is an arm The magneto generator is carried- 8, which is fixed to the shaft. spring 9 encircles the shaft between the arm and the supporting member 6 and is connected at one end to said arm and at its other end to the supporting member 6. This spring holds themovable electrode shaft seated and the contact points 4: and 2 in engagement with each other. The magneto generator G is carried by a bracket 10. Said bracket is formed with a shelf 11, to which the magneto generator is bolted by suitable bolts 12. The magneto generator is provided with a trip lever 13, and this trip lever is operated by means of a main spring 14. The partied lar construction of the magneto and the actuating means therefor forms no part of the present invention, but is shown, described and claimed in my copending application Serial No. 312,228, filed of even date herewith.

'The bracket 10 is formed with a face member 15 which is provided with an opening 16 adapted to surround the projecting end of the spark. plug or supporting memher 6. Said spark plug or supporting member 6 isprovided with a shoulder 17, which is adapted to overlie the edge of the opening 16. The bracket 10 has an opening 18 which extends over a stud 19 carried by the pad 20 formed on the engine cylinder, and a nut 21 on the end of said stud clamps the bracket firmly against the pad 20 and at the same time causes the bracket to firmly clamp the spark plug or supporting member 6 in the engine cylinder. The trip lever 13 is adapted to engage a cam face. on the arm 8 in the usual manner for separating the electrodes. One of the terminals of the magneto generator is connected to a rod 22 which is mounted in a sleeve of insulating material 23 and said sleeve is mounted in a boss 24: formed in the bracket 10 carrying the mag neto. The outer end of said rod 22 terminates in a recess 25. The rod 5 has an extending'rod 26 which is adapted to engage the walls of said recess and thus form an electrical connection with the rod 22.

Mounted on the spark plug or supporting member 6 is a pin 27 which is adapted to engage a recess 28 formed in a lug 29 carried bythe bracket 10. This pin is set eccentric to the center of the opening 16, and, therefore, serves to hold the member 6 from any rotative movement relative to the bracket 10. 4 From the above, it will be apparent that I have provided a magneto generator wherein the support for the fixed and movable electrodes is a self-contained unit adapted to be independently placed on the engine cylinder and said supporting member is held in place by the bracket.

It will also be notedthat the, fixed electrode has a sliding electrical contactwith one terminal of the magneto generator, and,

' therefore, the entire bracket may be readily removed without disturbing any of the parts and the spark plug for the movable and fixed electrodes may be quickly replaced by a new part.

It is obvious that minor changes in the details of construction and arrangement of parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an ignition device, a fixed and a movable electrode, a support therefor projecting beyond the face of the engine cylinder, a: magneto generator, a bracket for supporting said generator, said bracket having an opening formed therein surrounding the projecting support for the electrodes, and means forholding the support for the electrodes and the bracket in a predetermined relation to each other, and means for securing the bracketto the engine cylinder.

2. In an ignition device, a fixed and a movable electrode, a support therefor projecting beyond the face of the engine cylinder, a magneto generator, a bracket for supporting said generator, said bracket having an opening formed therein surrounding the projecting support for the electrodes, and means for securing the bracket to the engine cylinder, said support for the electrodes having a pin adapted to engage a recess in the bracket for holding the support from rotating movement in the bracket.

3. In an ignition device, a fixed and a movable electrode, a support for said electrodes, a magneto generator, a bracket for said magneto generator, means for securing the bracket to the engine cylinder, a terminal rod carried by the bracket for the magneto generator, and means whereby said 'fixed electrode has a sliding engagement with said terminal.

4. In an ignition device, a fixed and a movable electrode, a supporting member for said electrodes, a spring for holding said electrodes normally closed, a bracket independent of the support for the electrodes, a magneto generator carried by the bracket, means for securing the bracket to the engine cylinder, said bracket having means for surrounding the support for the electrodes and for holding the support on the engine cylinder.

5. In an ignition device, a fixed and a movable electrode, a supporting member for said electrodes, a. spring for holding said electrodes normally closed, a bracket independent of the support for the electrodes, 9. magneto generator carried by the bracket, means for securing the bracket to the engine cylinder, said bracket having means for surrounding the support for the electrodes and for holding the support on the engine cylinder, a rod terminal having a cup shaped recessed end carried by the bracket for the magneto generator, said fixed electrode having an extension adapted to make sliding engagement with the cup-shaped recess in the end of the terminal.

6. In an ignition device, electrodes, a sup port for said electrodes, a magneto generator, a bracket carrying said magneto generator and having an opening in which said support for the electrodes projects, said support having a shoulder adapted to be engaged by the bracket, whereby the support is held on the engine cylinder and additional means for holding said support for the electrode and the brackets in a predetermined position relative to each other.

7. In an ignition device, electrodes, a support for said electrodes, a magneto generator, a bracket carrying said magneto generator and having an opening in which said support for the electrodes projects, said support having a shoulder adapted to be engaged by the bracket, whereby the support is held on the engine cylinder, a terminal rod carried by the bracket for the magneto generator, one of said electrodes'having an extension making sliding contact with a cupshaped recess in the terminal rod.

8. In an ignition device, electrodes, a cylindrical support for said electrodes, a

bracket, a magneto generator mounted on the bracket, said bracket having openings adapted to receive and fit an extension on said support, said bracket and support having interfittingmeans for holding the support from rotating in the bracket.

9. In anignit-ion device, electrodes, a cylindrical support for said electrodes, a bracket, a magneto generator mounted on the bracket, said bracket having openings adapted to receive and fit an extension on said support, and a pin carried by the supture.

ALBERT ERICKSON.

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