US888196A - Igniter mechanism for internal-combustion engines. - Google Patents

Description

No. 888,196; I PATENTED MAY 19, 1908.

B. RUUD & 0. BEGBNBOGEN. IGNITER MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION tum) MAY 18,1904.

z sums-sunmm I INVENT I No. 888,196. PATENTED MAY 19, 1908.

REGBNBOGEN, IGNITER MECHANISM FOR INTERNAL GOMBUST E. RUUD [is 0.

ON ENGINES.

APPLIOATION FILED MAY 18, 190i.

2 SHEETS-SHEET 2.

m VE/V Tom ATTORNEY v .W/T/VESSES;

operating the mec anism which is utilized engines in order to insure the production of mechanismshown n Fig. l,-but illustrating ,a n'iodihcation. I 40 UNIT s Ii Filliid Prllililtlil @lll lh l in EDWIN lRlIlIID. OF lllTSlll itl PENNSYLVANIA. AND tO'NRi-ill REGENBOGEN, OF MANCHES- Specification of Letters Patent.

lNGilUl'SE Hi-HHINIC COMPANY, A (ORPORA- IG-NI'IER MECHANISM Fuzz .lNlERNjAL-GOMBUSTION ENG-llama.

Patented May 19, 1908.

Application filed may 18, 1904. Serial No. 208,577.

T all 107mm it may concern:

Be it known that we, EDW'IN lill'h, a citizen of the United States, and (.oxnwn R12- GENBOGEN, a subject of the Sting of Prussia, residents, respectively, of Pittsburg, in the county of Allegheny and State of PennsyL vania, and of IiIam-hester, in the county of Lancaster, England, have invented a new and useful Improvement in lgniter ilech- 'enis in' for Internal("ombustion Engines, of which the following is aspecification.

Our invention relates to internal combustion engines, and mrticularly to means for for igniting the explosive charges which are periodically admitted to the combustion chambers of such engines.

It is a usual practice to operate the sparking points of combustion engines by means of cams or eccentrics on rotary parts of such sparks that will ignite the explosive charges in the ignition chambers at proper intervals.

Our present invention materially simplifies the construction of such apparatus, by reason of utilizing a single cam and rod for operating both the inlet valve of the engine and the ign'itingdevice.

In the accom anying drawings, Figure 1 is a View, partia y in side elevation and partially in section, of a portion of a gas engine constructed in accordance with our invention. Fig. 2 is a detail view of a portion of the ignitcrmeoh'anism shown in Fig. 1, parts being broken away, and Fig. 3 is a view, partially in side elevation and partially in section, corresponding to the portion of the Referring now particularly to Figs. 1 and 2 of the drawings, the inlet valve 1, which serves, when depressed, to admit a charge of explosive mixture from a suitable .source, such, for example, as a mixing valve, (not. shown), to the explosion chamber 2, is normally held to its seat by means of. a coils ring 3 andis depressed to admit, the explosive mixture, at suitable intervals, by means of a rocking lever 4, the free end of which engages with the upper end of the valve stem 5. A lever 6 is rigidly connected, at one end, to the corresponding end of the lever 4 by means of a rod or shaft 7 and, at its other end, is pivotally connected to a head 8 in which is located. a coil-spring 9. -5 A valve-operating rod 10 is provided, at its upper end, with a collar 11 against which the upper end of the spring 9 bears, and this col or may be adjusted by means of nuts 12,

an automatically adjustable connection'be- 6O tween the rod 10 and the lover 6 being thus provided. The lower end of the rod 10 is attached to the free end of an operatin lever l3, the other end of which is pivoted to the frame l4 ot' the. engine. The lever 13 is provided with a roller 15, with which engages a suitably shaped cam 16 that is mounted upon a shaft 17 and is operated from the main shaft of the engine by means of suitable gearing, (not shown). The rod 7o 10 is moved to and held in its uppermost position, when not pressed downward by the action of the cam 16, by a coil-spring 18.

Suitably mounted upon the .side of the cylinder 19 is an ignition device 20 having a stationary contact terminal or electrode 21 and a pivotally mounted contact terminal or elect-rode 22. The movable terminal 22 is provided with a laterally projecting arm '24, and a hammer member 24, pivotally mounted concentric with the terminal 22, normally forces the projecting arm 24 of terminal 22 in' contact with. a stop 24" by means of a coiled spring 23, The elements are so arranged that whenarm 24 is in contact with sto 24 terminal :22 will be out of contact wit terminal 21, and when the hammer member 24 is raised or rotated toward the terminal 22, the arm 24 will follow the same untilthe two terminals are in contact. The outer end of hammer member 24 when in its lowest position, which is when it is holding the arm 24 in. contact with stop 21', is in the path of travel of the upper end of a tripping bar 25, which is pivotally mounted upon a block 2 6. The block 263 is clamped to the rod 10 and is provided with a spring 27, the free end of which rests agai11st*-tl1e upper end of the tripping bar 25 and tends to press it inward in line with the outer end of the ham- 10o mer member.

The bar 25 is provided with a beveled 0r inclined edge 28, which engages with a collar 29, the latter being here shown as in the form of an eccentric mounted upon a pin 30, so that it may be adjusted to vary the throw of the bar 25 in accordance with the conditions of operation desired.

p the rod 10 and with it the arm to such a point as will bring the terminals in contact. A slight additional degree of movement will cause the eccentric 29 to move bar 25 out of engagement with the hammer member 24: and the spring 23 will instantly separate the terminals and produce the necessary spark. As the cam 16 continues torotate it will lower the rod 10 and through the action of the levers 6 and 4 will niove the inlet valve to open position, and together with the spring 27 will move the bar 25 downward and inward beneath the hammer member 24.

In Fig. 3, we have shown a rod 10 a portion of which is provided with a screw-head 31 upon which is supported the block 26 and with which engages adjusting nuts 32 and 33 in order to vary the position of the block u on the rod. In this modification, we have a so shown a separate tripping rod 34 for enga ement with the arm 24 of the movable mem er of the igniter and have shown said movable member as rovided with a spring 35 that is so arranged as to tend to hold the sparking points. in engagement. The tripping rod 34 is normally held in its lowest 7 osition by means of a coil-spring 3 6 and its ower end is engaged bythe bar 25 and moved upward as the main rod 10 is moved upward. When the bar 25 is moved out of engagement with the end of the tripping rod 34 by the eccentric 29 at substantially the upper limit of the stroke, the spring 36 causes the tripping rod'34 to quickly descend and strike the arm 24 a sharp blow, thus quickly separating the terminals of the igniter and producing the desired spark.

Other variations from what is shown in the drawings and specifically described may be made b those skilled in the art without departing rom our invention and we therefore desire it to be understood that our invention is to be accorded such scope as ma be warranted by the state of the art, regar less of any specific illustration and description which we may have given.

We claim as our invention:

1. In an internal combustion engine in combination with an inlet valve, a pivoted said rod is capable of further motion after,

said valve is closed, an igniter trip bar pivotally mounted on said rod,;a stationary otally mounted on sai 2. In an internal combustion engine, the

combination with an inlet valve, aivoted valve-operating lever, a cam-actuate rod, a

yielding connection between said rod and said lever whereby said rod is capable of further motion after said valve is closed, an igniter trip bar mounted on said rod, a stationary igniter terminal, a movable igniter terminal, means rendered operable by said trip bar for moving said movable terminal into contact with said stationary terminal, a device for moving said terminals apart and an adjustable timing cam for rendering said device operable.

3. In combination with an internal combustion'engine valve, a valve-operating lever, a cam-actuated rod, a yielding connection between said rod and said lever whereby said rod is ca able of further motion after said valve is c osed, a pivotally' mounted igniter terminal, a stationary igniter terminal, a spring-controlled rod for normally holding said igniter terminals a art, a trip bar pivd. cam-actuated rod for moving said tri rod to permit said pivotally-mounted igniter terminal to move to contact with said stationary terminal, an adjustable timing device for releasing said trip rod to break the contact between said terminals. I

' 4. In combination with an internal combustion engine valve, a valve-operating rod, a lost motion connection between said rod and said valve whereby said rod is capable of further motion after said valve is closed,-

igniter terminals, a trip rod adapted to normally hold said terminals apart, a pivoted bar carried by said valve-operating rodfor moving said trip rod to permit said terminals to contact and a timin device for releasing said trip rod and thereby breaking the contact of said terminals.

In testimony whereof, I have-hereunto subscribed my name this 21st day of April,

EDWIN RUUD. Witnesses:

E. H. L. MUMMENHOFL OTTO W. Hnnmunrorn

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