US1289606A

US1289606A - Internal-combustion engine.

Info

Publication number: US1289606A
Application number: US86707414A
Authority: US
Inventors: Oliver E Barthel
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-10-17
Filing date: 1914-10-17
Publication date: 1918-12-31
Anticipated expiration: 1935-12-31

Description

0. E. BARTHEL. INTERNAL COMBUSTION ENGINE. APPLICATION man ocT. l?. 1914,

Patented Dec. 81, 1918 4 SHEEr'S-SHEET l.

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APPLICATION FILED OCT. I7. 1914. Y

Patented Deo. 31, V1918.

4 SHEETS-SHEET 2 fille MA lill/4 i m z mm@ im www o. E. 8111111151. Y INTERNAL COMBUSTION EINQINE. I APPLICATIQN FILED OCT. I?, l9l4. 1,2891606 Patented De@ 31,1918.

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Cil/@imam o. E. BAR-THEN, INTERNM COMBUSTION ENGINE. APFLlCATION FILED OCT. I7, i914.

OLITER E. BARTHEL, F DETROIT, MICHIGAN.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented nec. ei, reis.

Application inea october i?, i914. semaine. 867,074.

To all whom t may concern.'

Be it known that l, Onrvnn E. BARTHEL, a citizen of the United States of America, residing at Detroit, in thecounty of Wayne and State of Michigan, have invented certain newv and useful Improvements in nternal-Combustion Engines, of lwhich the following is avspecification, reference being had therein to the accompanying drawings.

This invention relates to improvements in internal combustion engines, ject is, in an engine having a mechanically operated overhead valve to provide an arrangement of operating mechanism for the valve -which will afford ellcient lubrication of the parts and prevent noise of operation.

i A further object of the invention is to provide an arrangement of inlet passages which will effect an even distribution of combusin the appended claims, reference being had to the accompanying drawings in which-d Figure 1 is a side elevation of an engine embodying the invention, and showing parts broken away to disclose'the internal construction Fig. 2 is an end elevation of the same;

Fig. 3 is an enlarged side elevation of the upper end of the cylinders, the head therefor and the cam shaft? chamber, lWith parts broken away and in section to disclose the internal construction;

Fig. 4 is a plan view of Fig. 3 with parts broken away and in section to disclose the internal construction; 4

Fig. 5 is a transverse section of the head and cam chamber substantially upon the line V-V of Figs. 7 and 4;

Fig. 6 is a like section upon line VI-VI of Figs. 4 and 7;

Fig. 7 is a horizontal section through the head substantially on the li'ne VII- VII of Fig. 5; and l Fig. 8 is a sectional detail 'of a portion of a tappet. I

For convenience of illustration La four cylinder engine is shown in the drawing,

but' it will be understood that engines havand its obthe engine independently ing any desired number of cylinders may be constructed with the invention embodied therein, and other changes in the form or arrangement of parts may be made without departing from the spirit of the invention. I do not, therefore, limit myself to the form or arrangement shown.

As shown in thedrawings, the cylinders 1v are cast integral with the upper half 2 of a crank case, said half of the crank case being provided with suitable bearings 3 for a crank shaft 4. The lower half 5 of the crank case is Aarrainged to be bolted to the flange on the upper half of the case and at its rear end is formed to engage a bearing member 6 forming the lower half of the rear bearing for the crank shaft. rear end, the upper half 2 of the crank case is formed witha semi-circular seat or flange 7 around the bearing 3 for a fly wheel casing 8,- and the half bearing 6 is formed with a semi-circular flange 9 forming a continuation of the seat 7 and to which the casing 8 is detachably secured by meansI of bolts 10.

By forming the rear crank shaft bearing with a lower detachable half which is separate from the lower half of the crank case, and providing this half bearing with the flange 9, the fly wheel casing'is attached to of the lower half of the crank case and each may be detached Without removing the other. Access may therefore be had to the crank shaft to adjust or renew the necting the fly wheel casing or. the usual transmission casing which is attached thereto but not shown in the drawings. With this construction it,v is not'neeessary to dismount the whole engine in order to get at the crank shaft or the fly wheel and its adjacent parts.

The upper end of the casting forming the several cylinders is faced offto receive a head l1 which is faced to seat thereon and is bolted thereto in the usual manner.` This head is formed with seats over the upper end of-each cylinder for an inlet valve 12 and an' exhaust valve 13. The casting forming the cylinder is formed intermediate the two pairs of `cylinders with a passage 14 opening through the side of the casting, and o verthe open end of the passage, a pipe leading from a carbureter or' other source of combustible charges, not shown, is adapted to be secured. The upper-end oit' At its bearings kwithout disconformed in the lower part of the head.

lower guide shanks the passage opensthrough the top of the casting and into the passage or chamber All of the inlet ports for the several cylinders which are controlled by the valves 12, open into this passage orv chamber 15 and an exhaust passage 1G for the exhaust ports of the two adjacent center cylinders, extends upward through the chamber 15 at the center thereof and opens through the side of the head intermediate its ends. The exhaust ports for the two end cylinders open into passages 17 which alsol open through the side of the head so that an exhaust manifold, not shown, may be secured to the side of the head to receive the exhaust from the several exhaust passages.

As the inlet ports all open from a common inlet passage which is supplied with combustible vapor intermediate its ends from the earbureter, andas said chamber 15 surrounding the center exhaust passage forms an annular passage, the combustible fiuid circulates freely and continuously therein materially aiding its flow, its entrance into the cylinders and preventing partial condensation or variation in richness of the charges, due in other forms of inlet passages or manifolds, to the retardation or banking of the vapor in the ends of the passage and the sudden changes in the direction of fiow. The chamber from which all of the inlets open also serves by reason of the volume of gas therein, to dissipate. the pulsations in the flow caused by the opening and closing of the valves and gives a substantially constant suction in the carbureter.

All of the space within the head not taken up by the inletand exhaust passages is chambered to receive water, and these several water chambers 1S are in comn'iunication with the water jacket of the cylinders a suitable pump 19 shown in Fig. 1 being provided to maintain a circulation of water through the cylinder jacket. chambers in the head and through a suitable cooler or radiator not shown. The explosive charges in the several cylinders are ignited by means of spark plugs 20 screwed into openings in the sides of the cylinders adjacent to the head 11.

rlhe several inlet. and exhaust valves are provided with stems 21 which extend vertically upward through suitable bearings in the head 11, and adjustably secured to the. upper ends of these. stems, are yokes 22, the of each of which are bored and internallyscrew threaded to receive the stems of the valves` and a lock uut 24 on each stem engages the lower end of the. shank to lock the which il is adjusted in the bore. These shanks 23 ofthe several yokes, are guided in suitable guide bearings in the bottom of a by the inertia of' stem in the-position to suitable casing adapted to contain the several yokes, said casing being preferably of oval shape in cross section and formed in two parts, the lower half being preferably` cast integral with the head 11 and supported by and spaced therefrom by means of brackets or webs 2G. The two halves of the chamber or casing are fianged and bolted together and the upper half is formed with suitable guide' bearings for the upper rounded ends or shanks Q7 ofjthe yokes.

The several inlet and exhast valves are operated in timed relation to the movement of the pistons in the cylinders, by means of a cam shaft 28 which is provided with cams 29, and is mounted in suitable bearings on the lower half of the cam shaft casing or chamber. The yokes 22 span the shaft and are provided with

suitable rolls

30 and 31 to engage the cams which thus act to posi- 'tively move the yoke in both directions and open and close the valves. Each of the rolls 31 is carried by a sliding member 32 engaging a bore in the upperend of the yoke..

and a spring 33 interposed between the sliding member and the inner end of the bore normally holds the roll 31 in contact Wit-h the cani 29 which is formed with a separate cam surface for each roll of each pair. To prevent the member 32 from turning Within its bore, it is provided with a pin 34 engaging a slot 35.

The cam shaft 28 is tion to the rotation of the crank shaft of the engine, by means of a shaft 36 and gears 37 indicated in dotted lines in Fig. Q for transmitting motion from the crank shaft to said shaft 36, similar gears 38 being provided at the upper end of the shaft 3G to transmit motion therefrom to the cam shaft, these. last named gea-rs being contained within the ends of the casing for the cam shaft.

This cam shaft easing or chamber is adapted to contain oil which is supplied thereto from a pump 39 shown in Fig. 1 and located in the bottomof the engine crank case. From-the pump, oil is con` ducted by a pipe 40 to the cam shaft chamber. and this pump also supplies oil to the other parts of the engine, such as the cups 41 into which the cranks dip, a pipe 42 con necting the pumpwith these cups. From the cam shaft chamber the oil overfiows through pipes 43 into the upper part'Y of the crank case, and thus maintained at all times in the cam 'shaft chamberto thoroughly lubricate the cams and rolls,. and also to deaden the noise of contact of the cams with the rolls.

A suitable packing 44, shown in Figs. 3 and 5, is provided for each of the. shanksl rotatedin timed relaa level of oil isk 23 of the yoke to prevent leakage of oil from tiuning within the casing. Each yoke is thus accurately guided in its up and down movement and is held in perfect alinement with the stem of the valve by the guide bearings in the upper and lower parts of the cam shaft casing.

By spacing the cam shaft casing from the head 11, the valve stems are made accessible for adjustment and are cooled by exposure to the air, and the cam shaft islocated within a chamber by itself where it will not be affected by heat from the cylinders. W'ear and consequent noise is thereby prevented, and an accurate opening and closing of each valve is insured by the yoke upon which the cam operates.

Having thus fully described my inventiony what I claim 1s z- 1. In an internal combustion engine, the combination of a plurality of cylinders having a head portion formed with a chamber provided with ports opening directly into the upper ends of all of said cylinders, said chamber extending from side to side of said bead portion and having an inlet opening midway of its length. valves for said ports, and means for supplying combustible fluid to said chamber through said inlet opening.

2. In an internal combustion engine, the combination of a series of cylinders, a head portion extending across the upper ends of all of said cylinders and formed with a sup-v ply chamber having ports opening directly into the upper ends of all ofsaid cylinders, said chamber being continuous from one end cylinder of the series to the other end cylinder'and extending from side to side of theI head portion with an inlet opening near one side intermediate its ends, valves controlling the several ports, and means for supplying combustible fuel to said chamber through said inlet openinO.

3. In an internal combustion engine. the combination of a plurality of cylinders having inlet and exhaust ports and a chamber into which all of said inlet ports directly open, an exhaust passage being provided for certain of said exhaust ports which passage extends across said chamber and is snrrounded thereby to permit a free circulation of combustible Huid in said chamber around said passage to all of said inlet ports, valves for closing the ports, and means for supplying combustible fluid -to said chamber.

4, In an internal combustion engine` the combination of a plurality of cylinders, a head for said cylinders formed with an inlet chamber having an inlet port for each cylin der opening directly therefrom and formed with an exhaust passage extending across and surrounded by said chamber, said chamber being also provided with an inlet opening intermediate its ends opposite one side of said exhaust passage which extends across the chamber, valves for said ports, and means for supplying combustible fluid to the inlet chamber through said inlet opening.

5. In an internal combustion engine, the combination with a cylinder. of a head for said cylinder formed with an inlet and an exhaust port, Valves controlling said ports, upwardly extending stems on the valves extending through be-arings in'said head, a casing spaced from said head and forming a cam shaft chamber intowhich the valve stems extend across said space, and a cam shaft in said casing provided with cams to operate the valves.

6. In an internal combustion engine, the combination with a plurality of cylinders, of a common head for said cylinders formed with inlet and exhaust ports in the plane of the vertical axes of the several cylinders and passages leading to and from said ports, valves for said ports, stems on the valves extendingthrough bearings in said head, a

casing spaced from said head and forming `a cam shaft chamber into which the valve head for said cylinders formed with an inlet and an exhaust portfor each cylinder 1n the plane of the vertical der, said plane being common to all of said cylinders, valves for the ports, stems on the falves extending upwardly through -the head, a casing above the head for holding oil and into which the stems extend, a cam shaftv 1n said casing extending` horizontally in the vertical plane of the cylinders and provided with cams for`operating the several stems, and means for rotating the cam shaft in timed relation to the movements of the pistons.

8. In an internal combustion engine, the combination with a cylinder and a piston in said cylinder, of valves in the upper end of said cylinder having upwardly extending stems. a. casing extending across the several cylinders and spaced therefrom and into which the stems extend adjusting means for each stem within the space between said cylinder and casing, and

means within the casing for operating the stems in timed relation to the movement of the piston. y

5l. In an internal combustion engine, the combination with a. cylinder and a piston in said cylinder. of valves in the upper end of axis of said cylinacross said space,v

said cylinder having upwardly extending stems, a cam shaft casing adapted to contain oil and into which the upper ends of the valve stems extend, a camv shaft in said casing having cams to engage the valve stems, and means in the bottom of the casing around each stem to frictionally engage the stem and remove the oil therefrom vas the stems are reciprocated, whereby the escape of oil from the chamber around the valve stems is prevented.

l0. In an internal combustion engine, the combination with a plurality of cylinders and pistons in said cylinders. of valves in the upper ends of said cylinders havingl upwardly extending stems, a cam shaft casing extending across the several cylinders and spaced therefrom and into which the stems extend across said space, said casing bclng adapted to contain oil, a. cam slaft in said casing having cams to engage the stems, and means in the-bottom of said casing surroum'ling each stem in frictional engagement therewith to remove thel oil from the stems upon downward movement thereof, said easing being chan'ibered around' each stem to receive. said means.

11. In an internal combustion engine, the combination with a cylinder and a piston in said cylinder, of valves for controlling inlet and exhaust ports in the head of said cylinder, said valves having upwardly extending stems, a cam shaft casing in the vertical plane of the cylinder and provided with bearings at its upper and lowersides for said valve stems, a cam shaft in said casing. a yoke for each valvestem embracing the cam shaft, 'and cams on the cam shaft within the yokes to engage the same and opcrate the valve stems in both directions.

12.. In an internal combustion engine, the combination with a plurality of vertically disposed cylinders and pistons in said cylinders, of a plurality of valves for controlling the inlet to and exhaust from said cylinders, saidl valves being positioned in the vertical plane of the axes of the several cylinders, stems on the valves extending vertically 'with an inlet and relation to the through the, upper ends ofthe cylinders, a am shaft chamber extending across the upper ends of the several cylinders with the said stems projecting into said chamber, a cam shaft in said chamber provided with cams for operating the stems, and a yoke for each stem within the chamber embracing theI cam shaft to be moved in two directions by the engagement therewith of said cams, said yokes being guidedyertically iu the upper and lower part of said chamber.

13. In an internal combustion engine., thel combination with a plurality of vertically disposed cylinders and pistons in said cylinders. of a head for saidvcylinders provided an exhaustl port for each cylinder. and passages leading from said ports, all of the inlet ports opening directly into a common passage, valves vfor closing said ports. ing vertically through he heada chamber carried by the head into which the valve stems extend, a yoke, on each valve stem guided in bearings in the, upper and lower part of the chamber. means for preventing the rotation of the yokes, a cam shaft having ams mounted in the bearings in the casing .and extending longitiulinally thereof, rolls on the yokes to be engaged by the cams.

one. of said rolls for each cam being yield! iugly held in'contact with said cams, and means for rotating the cam shaft in timed movements of the several pistons.

In testimony whereof I affix my signature in presence of two witnesses.

Imwis ll. ItLANnnas, A NNa M. Donn.

'alve "tems for the valves extend` tov