US1133740A

US1133740A - Hydrocarbon-engine.

Info

Publication number: US1133740A
Application number: US85210914A
Authority: US
Inventors: Gunder Nygaard
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-07-20
Filing date: 1914-07-20
Publication date: 1915-03-30
Anticipated expiration: 1932-03-30

Description

G. NYGAARP.

HYDRUUARBON ENGiNE.

,wruunrmu ruin JULY 2M. 1914 Patented Mar. 30, 1913.

HHHHHI ll livntor Witnesses Atlm neys 1 and claimed,

OFFICE.

GUNDER NYGAARD, OF CLERMONT, IOWA.

HYDROCARBON-ENGINE.

Application flied July 20, 191 Serial No. 852.109.

T 0 all ir/wm it may concern:

Be it known that l. (ltisnnn NYGAARD, a citizen of the United States. residing at (.lermont. in the county of Fayette and State of Iowa, have invented a new and useful -llydrocarbon-Engine, of which the following is a specification.

The present invention appertains to hy drocarbon or internal combustion engines, and relates more particularly to the intake and exhause valves thereof.

t is the object of the present invention to provide a unique valve structure for a hydrocarbon engine, with a view to obtaining maximum power with a minimum exi ieruliture of fuel, to cheapcn the manufacture of the engine, to reduce the number of parts to a minimum. and to enable. the parts to be cooled more readily.

\Vit-h the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of constructioi'i hereinafter described it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, withoutdeparting from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying drawing, herein the figure is a sectional viowof the improved valve structure as applied to an engine cylinder, parts being shownin full.

In carrying out the invention. the engine cylinder 1. in which the. piston l reciprora is provided with a domeshaped head or end 3, providing an exhaust chamber therein, and the, exhaust pipe 4 is engaged or so cured through the dome-shaped head 3 to communicate with the exhaust chamber therein. Between the body of the cylinder 1, and the head 3, there is formed a conracted inner annular valve seat 5, of com paratively large diameter, and in which is seated a puppet valve 6, which forms the exhaust valve. The exhaust valve 6 is secured upon one end of a tubular stem or shank 7 which is slidable through a central opening fOI'Il'leCl within the. head 3.

The tubular stem or shank 7 forms a portion of the intake conduit, the outer end portion of the stem or shank 7 being slidably received by the discharge end of the Specification of Letters rat-cut.

Iatented Mar. 30, 1915.

intake pipe 9, and a packing or stul'ling box 10 being carried by the end of tliepipe 9 and embracing the tubular shank or stem 7 to prevent leakage. The end of the intake pipe 9 is concentric or coaxial with the opening 8 of the head 3, in order to properly guide the tubular shank or stem 7 for reciprocatory movement axially of the cylinder 1. The inner end of the. tubular stem or shank i and upon which the exhaust valve 6 is so; cured. is flared or formed with a beveled valve seat 11, in which is seatable a puppet valve 12, forming the intake valve, and having a stem 18 projecting axially within the tubular shank T of the exhaust valve 6, spiders or apeu'tured guides ll being secured within the shank 7 and ha 'ing the stem 13 guided slidably therethi'ough. A relatively weak coiled wire expansion spring 15 is disposed upon the free end portion of the stem 13 and is seated between the spider or guide 1% remote from the valve 12 and an'adjustable nut 16 mounted upon the free end of the stem 13, whereby the spring 15 will normally hold the intake valve 12 seated, although the intake valve may open upon the suction stroke of the piston. v

The cylinder 1 is preferably provided with inner ribs 17 adjacent the valve seat 5, for properly guiding the exhaust valve 6 for movement to and from its seat- 5, and the ribs 17 are preferably integral with the seat 5, to brace or reinforce the. same.

An annular flange 18 is secured. upon the protruding portion of the tubular shank 7 outside of the head 3, and a coiled Wire expansion spring 19 is disposed upon the shank 7 between the flange 1.8 and the head 3, to yieldablv seat the exhaust valve 6. The exhaust valve (3 may be unseated at the 0pportune times, in any suitable manner, and to this end, a lever 20 may be fulcrumed to an extension .21 of the head 3, and may have one. arm bear against the flange 18, while the thrust or push rod 22 may be fulcrumed to the other arm of the lever 20, to enable the said lever to be actuated by-the usual valve shaft (notshown).

As will be obvious, the valve structure is operative nohvithstanding the various positions in whii h the cylinder 1 may be arranged, the cylinder being illustrated in an inverted position in the drawing, although it may be arranged in various other positions in practice. The usual spark" plug or igniter 23 is engaged through the cylinder 1 adjacent the valve seat 5, so as to lie between the exhaust valve 6 and the piston 2.

In operation, the exhaust and intake valves 6 and 12, respectively, will normally be held seated under the influence of the respective springs 19 andv 15, and when the piston 2 moves through its intake stroke, the suction created w'ithinthe e inder will unseat the intake valve 12, and the combustible mixture will then be sucked into the cylinder from the intake pipe 9 through the tubular shank 7 of the exhaust valve 6. Immediately upon thepiston 2 reaching theend of the suction stroke, the intake valve 12 will be seated under the influence of the spring 15, and both of the valves 6 and 12 will remain seated during the compression stroke of the piston 2, it being-observed that the present engine has a four cycle action. The compressed gas is then ignited by the spark plug 23, as usual, 0 force the piston 2 through its power or explosion stroke, and then, when the piston 2 returns through its exhaust stroke, the exhaust valve 6 is unseated to enable the burnt gases to pass into the discharge chamber within the domeshaped head 3 and thence to the atmosphere through the exhaust pipe 4. The exhaust valve 6 may be readily unseated by the timely oscillation of the lever 20, which may be accomplished in any suitable mode, whereby the lever 20 bearing against the flange 18 will slide the tubular shank 7 inwardly against the tension of the spring 19, to unseat the exhaust valve 6, for the purpose indicated. It is to be noted that the intake valve 12 is movable with the exhaust valve 6, since the exhaust valve carries the seat of the intake valve, but in view of the aimed at in a satisfactory manner, and furthermore, it will be noted that the tubular shank 7 of the exhaust valve 6, passing through the discharge chamber within the head 3, will enable the shank 7 to be heated so as to heat the fresh gas entering the cylinder, to increase the efliciency of the engine.

Having thus described the invention, what is claimed as new is In an engine, a cylinder having a chambored head at one end and an inner contracted valve seat between the said head and the body of the cylinder, a spring pressed tubular shank slidable through the said head, an exhaust valve carried by the said shall and cooperable with the said valve seat, said shank having a valve seat, a yieldably seated intake valve cooperable with the last mentioned valve seat and carried by the said shank, and means for moving the said shank inwardly to unseat the exhaust valve, there being ribs between the body of the cylinder and first mentioned valve seat forming guides for the exhaust valve.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

GUNDER NYGAARD. Witnesses:

B. C. GRUvEn, E. M. HAUG.