US1238024A - Internal-combustion engine. - Google Patents

Description

F. H. KRlENlTZ.

INTERNAL COMBUSTION ENGINE.

APPLICAHON FILED MAB. 10. 1911.

L ,@SIQQ., Patented Aug. 21,- 1917.

2 SHEETS-SHEET l,

ATTORNEY F. H. KRIENITZ. E INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR-10.1917.

fas

FRANK H. KRIENITZ, OF MCFARLAND, KANSAS.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Aug. 21, 1917.

Application led March 10, 1917. Serial No. 153,906.

To all whom t may concern:

Be it known that I, FRANK H. Knmni'rz, a citizen of the United States, residing at McFarland, in the county of lVabaunsee and State of Kansas, have invented new and useful Improvements in Interi'ial-Combustion Engines, of which the following is a speciication.

This invention relates to internal combustion engines one object of which is to provide a compact powerful multiple-cylinder engine in which the cylinders reciprocate as a unit and the pistons are stationary, the arrangement being such that all of the cylinders are coupled by a pair of connecting rods with a crank shaft having two cranks, thereby materially reducing the friction and strain and also producing a construction by means of which the impulse or working stroke in one cylinder is cushioned by the compression stroke in an opposing cylinder, resulting in a material reduction in vibra tion and producing an engine of smooth and powerful action.

A further object of the invention is to provide cut-olf valves slidably mounted in the pistons and adapted to control the ports thereof, suitable means being provided for operating the two valves as desired at appropriate intervals.

1n the accompanying drawings Figure 1 is a top plan view of the engine;

Fig. 2 is a longitudinal sectional view of the engine;

Fig. 3 is a horizontal sectional view of the same;

Fig. i is an end view of one of the pistons.

Fig. 5 is a transverse sectional view of the engine.

Fig. 6 is a sectional view of a disk used upon the engine.

Fig. 7 is a fragmentary sectional view of parts of the engine cut on the line 7 7 of Fig. 2.

Referring to the drawings, l designates the crank shaft of the engine, the same being mounted in bearings 3. The crank shaft is provided with a gear wheel 4L and is geared with a shaft the latter indicated at 5. The shaft 1 is provided with two cranks 7, 8 designating connecting rods attached to the cranks 7 by the connecting rod bearings 9.

A frame is provided and includes side members 10 substantially parallel to each other and the end members 11 which rigidly connect the side members 10. In the engine as illustrated in the accompanying drawing, four pistons A, B, C and D are employed, each piston being provided at its outer end with an attaching flange 12 by means of which it is bolted or otherwise securely fastened to one of the end frame members 11. The inner end of each piston is closed by a head 13.

Cooperating with the pistons is a correspending number of cylinders a, o and d, all of which cylinders being cast @a bloc and having their ends open to embrace the pistons while the inner ends thereof are closed by means of a cylinder head 14 common to all of the cylinders.

In the preferred embodiment of this invention all of the cylinders and pistons are horizontally opposed and they all lie in a common horizontal plane. Extending through the block of cylinders at the center thereof is a hollow shaft 15 to which the adjacent ends of the connecting rods 8 are coupled. The connecting rods 8 are located at a su'Hicient distance from the cylinders to prevent any interference on the part of the said piston rods as the crank shaft end thereof follows the sweep of the cranks 7. Roller tracks 19 extend longitudinally of the outer walls of the cylinders and bear against rollers 20 carried by forks 21 on the ends of the supporting rods 22 which are fastened to the frame at 23. The arrangement just referred to forms a support for all of the cylinders and guides the same in the reciprocatory movement thereof.

Each piston is provided with a. longitudinally disposed passage way 24 which communicates with the valve chamber through a port 25 located adjacent the head 13. The said valve chamber is located centrally of the piston and contains a sliding valve as best shown in Fig. 3 and described hereinafter. Each piston is further provided with a port 26 which communicates at its inner end with the valve chamber and at its outer end with a passage way 27 which in turn communicates with the interior of that cylinder in which the said piston operates. The ports 25 and 26 are out of alinement with each other, the port 26 being located at a. point more remote from the head 13 than the port 25 as shown in Fig. 3. The valve 28 is slidably mounted in the valve chamber of each piston and is provided with a s'tem 29. The stems extend beyond the end frame members 11 and are provided with rollers 30 adapted to operate in grooves 30 provided in cam disks v31. IThe said disks are located in the frame containing the cylinders and pistons. Each disk is adapted to operate two valves in order that the valves may be moved in a 'predetermined manner with Arelation to the ports and 26. One disk 31 operates two valves 28 and both of the said disks aremounted on the shaft 5 in a suitable manner as shown in Fig. 1. Gas or mixture pipes 33 connect with the ends of the passage way 24.

The cylinders are provided adjacent the head 14 with spark plugs Si and in the re ciprocatory movement of the cylinders the said plugs approach the electric conductors 35 whereby sparks` are made at the plugs and ignition results. The stems 29 pass through guides 36 and springs 87 bear against the said guides andthe stems and serve to hold the rollers y toward the disks 31.

rlhe .timing of the engine is preferably such that as an explosion takes place in one oylindencompression is taking place in one of the opposing cylinders and in this way the working stroke in oneof the cylinders is eushionedby the compression of the iniX- ture in an opposing cylinder. The other cycles of operation are arranged to follow each other after the manner of the ordinary four cycle internal combustion engine. Thus in an engineelnhodying four cylinders there -of the crank shaft.

Having described the invention what is claimed is In an internal combustion engine, the oombination of a crank shaft having 'two cranks, a frame Comprising longitudinal and transverse members, horizontally opposed pistons having closed heads at their inner ends arranged in spaced relation to each other, the outer ends of said pistons being `iiredly secured to the said frame, a block of cylinders corresponding' in number with lthe number of pistons and arranged to reciprocate back and forth relatively to and upon said pistons, means operatively connecting the saideylinders with the cranks, of the shaft, the said pistons having passageways at their opposite sides and ports communicating withthe passageways and the interiors of the pistons, valves slidably mounted in the pistons and adapted to close the said ports successively, stems attached to the valves, rotary earn disks coperating with the valve stems and driven from the crank shaft, each disk being provided with a` Igroove adapted to operate two of the valve stems.

In testimony whereof I my signature.

' FRANK H. KRIENITZ.

NCo'pies. of this patent may be obtained for veeents each, by addressing the Commissioner 'of yatents. Washington, D. C.

Images