US1409710A - Engine - Google Patents

Description

1. HALTENBERGER.

ENGINE.

APPLICATION FILED lN[)V.22, I920.

ao: www

UNITED STATES JULES IIAI."1ENBERGER7 0F INDIANAPOLIS, INDIANA.

ENGINE.

Specification of Letters Patent.

Patented Mar. 14, `1922.

Application filed November 22, 1920. Serial No. 425,597.

T 0 all whom t may concern Be it known that I, JULES HALTENBERGER.

- who am a citizen of the city of Kassa, Kai

the radial. type, to avoid the necessity for` any separate cam shaft and eliminate all gearing and gear noise in such mechanism, and to provide round surfaces for the interengaging relatively movable parts of the valve-operating mechanism.

The accompanying drawing illustrates my invention: Fig. 1 is an end elevation of a three-cylinder radial-type internal combustion engine embodying my invention, with two of the cylinders and part of the crankcase broken away; Fig. 2 is a side elevation of such engine, with the lower part broken away, and in partial section at the crankshaft; and Fig. 3 is a section on the line 3--3 of Fig. 1.

The engine shown has a plurality o1 radial cylinders 10, suitably bolted to a central crank-case 11, in which is mounted a crank-shaft 12 provided with the usual flywheel 13. The pistons in the several cylinders are connected by the usual connecting rods 14 to the crank-shaft 12, which has a number of cranks corresponding to the number of planes in which the cylinders are arranged transverse to the crank-shaft, as shown, the crank-shaft has but a single crank, as there is an odd number ot cylin ders and so they are all arranged in a single plane transverse to the crank-shaft. Though the engine shownV has three cylinders, any desired number oi cylinders may be used. The structure as so far described is wellknown. Y

Each cylinder 10 is provided at its outer end with an inlet valve 20 and with an exhaust valve 21, shown'as of the Voverhead type, and each of these valves co-operates with one end of a rocker arm 22 pivotally mounted at an intermediate point on a suitable support 23 carried by the cylinder. The valves may be all alike, and the rocker arms may be all alike, so that they are interchangeable, The other end of each rocker arm 22 co-operates with the outer end of a push rod 24, conveniently through an adj listing screw 25 which may be provided on the rocker arm. The push rods 24 are all alike, so that they are interchangeable. The outer ends of these push rods 21 are all in the same plane transverse to the crank-shaft when the cylinders 10 are all in a single plane, and the outer ends of the two rods for each cylinder are spaced apart in such plane, as is clear from Fig. 1; the push rods for each cylinder lie in planes parallel to and on opposite sides of the plane of that cylinder and ot the crank-shaft, and preferably the inner ends of the push rods for each cylinder lie on opposite sides of the transverse plane or' the outer ends of such rod, and are spaced from such transverse plane by equal distances, as is clear from Figs. 2 and 3. This arrangement permits the valve rods to be all alike and therefore interchangeable.

The inner ends of the push rods abut against the outer ends of two parallel tappet rods 2T rotatably and slidably mounted in suitable guide holes 26 in the crank-case 11; the push rods or the tappets are suitably cupped to receive the other at their interengaging ends. The tappets 27 and the holes 26 are round where theyV fit together, so that they may readily be machined. Vithin the crank-case, each tappet has a crankarm 29, in the free end of which is swiveled a pin 3() carrying a roller 28. The two pins 30 for each cylinder preferably lie substantially in the plane of the axes of said cylinder and of the crank-shaft.

In the crank-shaft 12 are two grooves 35 and 36, one of which receives the rollers 28 for all the inlet valves and the other the Vrollers 28 for all the exhaust valves. Each groove 35 and 36 is a twin or two-revolution groove, comprising two axially separated parts extending almost completely around the crank shaft in a single plane transverse to the crank-shaft axis, and an X-shaped crossover part interconnecting said two axially separated parts. As the crank shaft rotates, any one roller completely traverses its groove in two revolutions of the crank shaft, to give the desired valve movement for a four-cycle engine, the roller traveling first in one of the axially separated portions and then passing by the crossover to the other portion, a liter traveling which it returns by the crossover to the first portion. rhebottoni ot the crossover and ot one of the axiallyv separated portions oi' each groove is wholly cylindrical, but that ot the other of ysaid axially separated portions is provided with a cam nose which littsaud lowers the roller 28 and .therethrough opens and closes the associated. valve.l This opening and closing movement of the valve is obtained wholly while the roller 28 is fout of the crossover part ot the groove.

y As each roller 28 travels` its groove, it is given three motions, and its tappet is given two motions. The cam nose in the bottom of `the groove littsand lowers the roller and the tappet, and therethrough raises and lowers the associated valve, the round part ot the tappetQT-sliding longitudinally within the hole 2611s required for such movement; the Side walls olvthe groove guide the roller, .both turning it and moving it longitudinally of the crank-shaft,V thus causing'both theV swiveled pin 30 to turn in the crank-arm 29 and the round part of the tappet 27 to turn' inthe hole 26. These motions are all permitted by the tappet and roller mounting.

Not only arethe valves, the rocker arms, Y

land the push rodsiinterchangeable, but so are the tappets; so that the entire valveoperating Y mechanism is interchangeable o throughout.

l. claim as my invention: Y

1. Inaninternal combustion engine, the -combination of a crank-shaft provided in its outer surface with a vtwo-revolution cam-operating path of which the'two parts are connected by ya crossover, a tappet mounted on one side of theplane of the crank-shaft and of theengine cylinder associated with such tappct .and both rotatable and longitudinally, slidable, and means connecting the outer end ot said tappet with an engine valve to operate the latter upon longitudinal movement of said tappet, said tappet having a crank-armY which at-itsflree end has means co-operating with said'path,` the pointwhere .said last-named means-fengages said path kbeing substantially in the :aforesaid plane.

2. 4In an internal-combustion engine, the combination otra crank-shaft provided in its outer surface with :a two-revolution eam operatingpath of which the twoparts are connectedV by'a crossover, aA tappet mounted ;onone side of the VVplane of the crank-shaft and/ofthe engine cylinder associated with 'such tappet andrboth rotatable and longitudinally -slidable, means connecting the louter end ot- 'said tappet with an Vengine valveto operatethe latter upon longitudi-V nal movementot -said tappet, said tappet having a crank-alainV andmeans having :a

' said path.

swivel mounting in the Ytree end of said crank-arm'and co-operating with said path, the pointwhere said'last-named means engages said path being substantially in the I aforesaid plane.

In an internal combustionl engine, the

combination of a crank-shatt'provided in its outer surface with a two-revolution cam-op, erating path of which the two parts are connected by a. crossover, a tappet both rotat able and longitudinally slidable, and means combination ota crank-shaftsprovided in its outer surface with a two-revolution camopcrating path ot which the two parts are connected by a crossover', a tappet both rotatable and longitudinally 'slidable, and means connecting the outer end oit said tappet with an engine valve to Yoperate the latter upon longitudinal movement of said tappet, said tappetjhaving a crank-arm, and means having a swivel mountingin the tree end ofesaid crank-army and (3o-operating with 5. In an internal combination of acranlr-shatt provided Vin its outersurface with a two-revolution Vcamoperating path ot which the'two parts are connected by a crossover, a tappet mounted on one side of the plane ot the crank-shaft and of the` engine cylinder associated with such tappet Vand both rotatable and longitu-` dinally slidable, means connectingthe outer end oi" said tappet with an engine valve to operate the latter upon longitudinal moven ment ot' said tappet, said tappet having a .crank-arm, VHand a roller; having a swivel mountingfin the treeY end ot said crank-arm andwin such plane and co-operating with Vsaid path, the .point where said'last-named means engages said path Vbeing substantially in the aforesaid plane.

`6. lnV anV internal ycombustion engine, the

combination of a vcrank-shaft providedfin its cuter surface with la two-revolution camoperating path Yof which thetwo parts are connected by a crossover, Aa tappet both rotatable and longitudinally slidable, means connecting the outer end'or" said tap'pet with anengine valve toroperate thelatter upon longitudinal movement of said tappet, said tappet having a crank-arm, andV a roller having a swivel mounting in the tree end of said combustion engine, the v crank-arm and co-operating with said path.

ln witness whereof, have hereuntoset" my hand at ndianapol1slndiana, this ith" day of'November,'A.,D. one thousand nine Y hundred and twent Y Y Y y, JULES Il ALTENBERGER.

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