US1357911A - Internal-combustion engine - Google Patents

Description

E. STUKE.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 3. 1918.

1,357,91 1. Pafented Nov. 2, 1920.

I I i PA ENT ol-"F cs.

ERNEST swim, or iunmman, m'ssrssrrrr.

INTERNAL-COMBUSTION Enema To all whom it may concern: v

Be it known that I, ERNEs'r STUKE,. a

citizen of the United States, residing at Meridian, inthe county of Lauderdale and State of Mississippi, have invented a'new I, and useful Internal-Combustion Engine,of

which the following is a. specification.

This invention relates to internal combustion engines of. that type shown, for example, in Patent Number-875,865 issued to me on J anuary 7 1908.

The primary object of the invention is to provide means constantly under the control of the operator whereby the compression of the explosive charge within the cylinder of the engine can be maintained substantially uniform if desired, irrespective of the changes in the atmosphere due to variations in altitude.

A further object is to provide simple and eflicient mechanism whereb. the variations in the relative positions 0 certain of the parts of the engine, necessary to maintain the desired compression, can be produced quickly and easily. A still further object is to provide mechanism of this character especially adapted for use in connection with airships and 'whereby high altitudes can be attained readily. a

With the foregoing and other objects in view the invention consists of certain novel details of construction and combinations of parts which will be-hereinafter more fully described and pointed out in the claims, it being understood that various changes may be made in the construction and arrange ment of the parts without departing from the spirit or sacrificing any ofthe advantages of the invention as set forth in theap ended claims.

ferred form of t e invention has 11 the accom anying drawings the preeen shown.

In said drawings- Figure 1 is a side elevation'of the engine, the same being shown partly in diagram Fig. 2'is a plan view of t at portion of the mechanism constituting the present in-- vention. I l

Fig. 3 is a detail view of the pedal mechanism. f i v Fig. 4 is an enlarged view through a portion of the pedal. n r 4 Referring to the figures by characters of reference, 1 designates, in diagram, the.cyl-

Specification of Letters Patent.

gas thereinto at the center thereof. Opposed p1stons 2 are mounted for reciproca- Patented Nov. .2, 1920.

Application filed May'3, 1918. Serial Ila-232,328.

inder of an internal. combustion engine and which cylinder is open at its ends and is prov1ded with any suitable means for directing tion in the respective end portions of the cyllnder and arranged below the center of 'the cylinder is a crank shaft 3 to the cranks of which are connected links 1. These links diverge upwardly and are connected, at their upper ends, to theouter ends of piston rods 5, the inner ends of the rods being pivotally connected to the respective pistons 2. A crank 6 is mounted'for rotation under .rotating the cranks 6 simultaneously or otherwise andone form of'mechanlsm for 2, 3 and 4. Shafts are connected to the this purpose has begn illustrated in Figs. cranks 6 and are provided with worm wheels which, in turn, are engaged and operated by worms secured to a shaft 10, the worm wheels being indicated at 11 and the worms at 12. Ratchet wheels 14: are secured to the shaft .10 and tiltably mounted on the shaft and extending over the ratchet wheels is a' pedal 15 having opposed pawls 16 and 17 depending therefrom and adapted to engage opposed portions of. the ratchet wheels. A sprmg 18 is connected to the pedal for holding it normally in an intermediate position. Spaced pins 19 and 20 are slidably mounted in the pedal and are provided at their upper ends with knobs for engagement by the toe and heel respectively of the foot engaging the pedal. A bell crank lever 21 is connected to the pin 19 and is connected to a sleeve 22 in which is housed a s ring 23. This spring bears against a p lunger housed in the sleeve and which-1s attached to a rod 24 connected to the awl 16. ,A coiled spring 25 may be arrange around to a bell crank lever 25 adapted to pull I through rods 26 and a spring 27 upon the pawl 17, thus to throw the pawl into engage- 110 mentwith the ratchetwheel.

It is to be understood that under normal conditions. the worms l2 and wheels 11 will successive explosions of gas in the cylinder,

the connections 8will work in arcs concentric with the lower ends of the bars 7 and motion will be transmitted through the links 4 to the cranks on shaft 3.' The operation of Y the engine will thus be the same as that of the engine described in my patent hereinbefore mentioned.

As the density of the atmosphere diminv ishes 1n proportion to the altitude, it vis necessary, in order to drive aeroplanes, etc. at high altitudes, to have some means whereby the compression of the charge can be increased as the density diminishes; The pedal operated mechanism is provided for this purpose.- By pressing with the toe on the pin 19 and lifting the heel from the pin 20, the pawl 16 will be throwninto engagement-with one ratchet wheel 14 while the pawl 17 will shift out of engagement with the other'wheel. Thus by oscillating the pedal, at the same time holding pin 19 depressed, the shaft 10 can be rotated intermittently in one direc-" tion, thereby transmitting motion through the worm gearing to the shafts 9 and causing the cranks 6 to gradually rotate and lift the bars 7 The arcs described by the connections 8 during the-reciprocation of the pistons will thus be moved upwardly and inwardly toward the cylinder 1 with the result that the pistons will move closer together during the compression strokesthereof and increase the compression as desired.

By lifting the pressing with the heel upon the pin 20 pawl 16 will become disengaged and pawl 17 will be movedinto active position so that oscillation of the pedal 15 will result in the rotation of the. shaft 10 in the opposite direction and the lowering of the connections 8.

Obviously this adjustment of the engine can a of the atmosphere toe from the pin 19 and be effected duringthe operation of the engine by a simple movement of the foot en gaging the pedal 15, the worm gearing looking the parts efficiently during the operation of the engine.

What is claimedis:

r 1. In an internal combustion engine a cylinder, oppositely arranged pistons therein, a crank shaft opposite the space between the pistons, oppositely extending piston rods pivotally connected to the pistons, supports pivotally connected to and extending at an 2. In an internal combustion engine the combination with a cylinder, opposltely arranged pistons therein, a crank shaft opposite the spacebetween the pistons, and oppositely' extending piston rods pivotally connected to the respective pistons, of support- .ing links pivotally connected to the outer ends of the piston rods, a shaft, means operated by the rotation of said shaft for si-v multaneously shifting said supports to raise or lower the outer ends of the piston rods, links connecting the crank shaft to the joints between the piston rods, links connecting the crank shaft .to the joints between the piston rods and their supporting links and constituting means for transmitting motion from the pistons to the crank shaft, and foot operated means. for rotating the support shifting shaft in either direction to ralse or lower said support. Y

In'testimony that I claim the foregoingas myown, I have hereto aflixed my signa- 'ture in the presence of two witnesses.

' ERNEST STUKE.

Witnesses:

IVY E, SIMPsoN P InoMENA A. ltoolmnm.

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