US860547A - Four-cycle explosive-engine. - Google Patents

Description

PATENTED JULY 16, 1907.

H. KASTRUP.

POUR CYCLE EXPLOSIVE ENGINE.

No. s6o,547.'

APPLIOATIQN FILED AUG. 25, 1906.

V I N ;360,547.

UNITED STATES P ATENT OFFICE..

HERMAN KASTRUP, OF ST LOUIS, MISSOUR. 4

. FOUR-CYCLE nxPLosrvn-ENGmE.

tain new and useful Improvcnents in Four-ycle Explosive-Engines, of which the following isa full, clear, and exact description, reference being had to the accompanying drawingsforning part of this specification.

My invention relates to a four-cycle explosiv e en gine and it has for its object to produce art engine 'of this type which is of simple and inexpensive construction and so designed as to provide'for the production of a high degree of power.

The drawing is a vertical sectional view of my engine.

l designates' the crank. housing of the engine, in' which is journaled the crank shait or power shaft hay: ing afwrist 2 that has connected to it the pisten rod 3.

4 designates the cylinder of the engine which surmounts 'the eran'k housing and contains the comhus- -tion chamher 5 and is provided with a radial exhaust port 6, intermediate of the crank housing andthe head of the engine cylindcr, through which free 'communication from the cornhustion chainber to the exterior ofthe engine cylinder is provided' e '7 is the piston which is connected to the wrist 2 of the power shaft hy the pisten rod 3 and is adapted' toopera-te in the combustion chamber on a forward stroke and be withdrawn to a position back of the exhaust port 6 when the 'burned gases from the explosive ageit are to bo exhausted at its next forward movement.

8 dcsignates a three way or Tvalve hohsing that is connected to the engine cylinder adjacent to its head and through which communication from a Vertical cond ucting pipo 9 connected to its lower end and leading ironi a suitable carburctcr (not shown) to the comhustion chamber 5 is ohtained, in order that the ex- 1.h sivc agent may be admitted* to said combustion chamber.

10 is a cont'olling outerinlet valve seated in the con- .ucting-pipc 9 and which is adapted to open automatically hy suction when the explosve went is to he delivered from said pipo into the valve housing and thercfrom into the cornhusticn chamber, bu't which atothcr times remains scatcd to prevent escape of cxpiosivc &gent ironi said pipo.

ll designatcs an inn-r inlet vsflvc contrulling comunication betw en the valvc housing 8 and combus- Lion chanher 5, this inncr inlct'valve being carricd hy u rcciprocatory valve Rich: 12 that is mounted in the va'vc housing. (in the reciprcnnory valve stem exterior of the Volvo housing is a retrsctilc spring 13 that serves to normally hold the nncr inlet valve 11 to its seat. At the enter end of the 'eciprocatory valve Specification of Letters Patent. Application filed August.25,1906. Serial Ne; 331, 966.

.Patented Jul'y 16, 1907.'

stem is a head 14 having an inclined face at its lower side.

15 designates a reciprocatory trip rod that is mounted" in a horizontal arm projecting from the side of the engine cylinder having a douhly c'urved arm provided at its upper end with a head 16 having an inclii ed face at its upper-side opposing the inclined face of the reciprocatog'y valve stern head 14. The trip rod 15 extendsdownwardly into the power shait housing and in the .lower end of said rod is mounted an anti-friction roller 17. 18 is a cam fixed toa countershaft 19 that is gear-ed to the power shaft in a manner common in explosive' engines, and-for which no inven'tion'is her-ein claimed. This cam 18 is' iormed with approximately Parallel 'side's and rounded forward edge and iseccentrically mounted upon the countershait 19. power shaft and`the countershaft 19 geared to the first named power shaft, the cam 18 strikes against the antifriction roller mounted in the trip rod 15 upon each coniplete rotation of the countershaft 19, thereby causing During -the rotation-of the said trip rod to be moved outwardly or up'wardly. As 4 'the trip rod moves outwardly or upwardly its head 16 by acting against the head 14 oi the reciprocatory valve stem 12 serves to impart an nward -moveient'to said reciprocatory valve stem and unseat the inner inlet valve 11 at the proper time during the operation of the engine. In the valve housing 8 is a vertical vent openi ing 8. .This vertical vent opening is controlled by upwardly opening relief valve 20 that is looselyftted to a guide rod 21 mounted in a horizontal'suppqrt proj ccting into the 'cha'mber of the valve housing and is normally held to its seat by a surmounting pressure spring22. 23

is an igniter that extends into the conibustion chamber 5 beneath the head of the engine cylinder and to which an electrical current is conducted in any suitable or well known manner for the purpose of creating a spark in said conbustion chamber for the igniton of the explosive &gent delivered thereinto.

` In thepractical use of my engine the cam 18 acts to operate the trip rod 15 andunseat the inner inlet valve 11 whilethepiston 7 is receding and the charge of explosive agent is drawn into the comhustion chamben The forward stroke of the piston then occurs immediately and the admitted =charge is compressed in the combustion chamb er until said charge is ignited and exploded th ough the spark produced in the gniter 23 as usual, it being understood that the ime' inlet galve 11 was permitted to resume its seat previous to such compression and the explosion of the explosive agrrt, due to the disengagement of the cam 18 ironi the trip rod 15. Upon the return or working stroke of the pisten it passes the exhaust port G and the burned gases or products of combustion escape through said exhaust. port; then as the piston again moves forwardly the cam 18 actuates the trip rod 16 with the result of unseating the inlct vziive 11 and the bnrned 'gas present in the combustion chanber is iorced theremm 'by the pisten into the valve housing 8, from which it is Vented by reason of the gas pressure acting to unse't the relief vaive 20. The conbustion chanher ie thue freed of gas and the piston immediately starts upon its return stroke. While the piston is returnng at this time, the unseated valve 11 is held in an open position, due to the continued engagement of the cam 18 with the trip rod 15 and e fresh supply of expiosve &gent is cirawn into the combus'tion chamber, the unseated valve being permitted to resume its seat just previous to the completion of the return Stroka of the pisten; The pisten then instantly stzrts upon its forward sti-oke and the explosive' ,agent is comp'ossed thereby in the combustion chami er in the same manne' LS previously described, as a precedent to the igniton and explosion of the expiosive agent in the same manner as that prevousiy explained.

I claim?- A four-cycle expiosive engine comprising a crank housing. a cyiinder having a combustion chamher provided with a -idel exhaust port and surmounting the crank housing.

" &0,547

a power shutt joii'naled in the ermk housing and having a eronk provided with a wrist, a piston, :i pisten rod couneotlng ihe pisten with the wrist, a eounte-sha't join'- power shaft 'with the countershaft, a U-shaped cam''ormed with approximately paruliei emes and a rounded forward edge and mounted eccentricliy upon the countewshut, H. three-way vaive hou`sing having a horizontal support projecting into the chamber the'eof, a controliing outer iniet vaive, an inner :iulet vaive, controliing communication between the valve housing and the combustion cha-niher and having a recprocatory vaive ste-m' having; e head provided with u iowe'.inclined face and Inonnted in the valve housing, a vertical reciprocatory trip rod having a head at its upper end provided with an upper inciiued face 'opposing the inciinod lower face of the :head of the reciprocutory vaLve-stem, and raised by the U-shaped cam. a guide stem nonted in the horizontal support, an ipwardiy opening relief vaive for the Volvo housing fitted to the giide stem, a retractile spring for seating the inner iziet` valve and rew tnrning the trip rod to normal position and a spring for seat'ng the reiief valve.

HERMAN KASTRUI" In presence of-- E. S. K IGHT. I WM. H. Sco'r'r.

naied in the emni:: housing, gear wheels connecting the,

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