US1459479A - Internal-combustion engine - Google Patents

Description

June 19, 1923. N 1,4594% I A. SCHAEFER INTERNAL COMBUSTION ENGINE Filed Nov. 8, 1920 2 Sheets-Sheet 1 mwx June 19, 1923.

1,459,479 A. SCHAEFER INTERNAL COMBUSTION ENGINE Filed Nov. 8, 1920 2 Sheets-Sheet 2- J a. cka e tr Patented June 19, 1923.

UNITED s'raras- AnoLrn; SCHAEFER, or LEJO, CALIFORNIA.

INTERNAL-com ression nneinn.

Application filed Noveinber s, 1920'. serial no. 422,473.

T 0 aZZ whom it may concern: 7

Be it known that Lr hDOLPl-I SCHAEFER, a citizen of the UnitedStates, residing at Vallejo, in the county of Solano and State of California, have invented certain new and useful Improvements in InternaLCombustion Engines, of which the following is a specification.

My invention relates to internal combustion engines and has particular reference to an improved engine embodying a novel valve mechanism therein.

The primary object is to provide an improved engine of the slide valve type, in which all parts are so disposed as to give'the greatest efficiency in operation and in the production of power. With this, and such other objects in view as will be apparent from the description, the invention resides in the novel construction, combination and arrangement of parts, described in the specification and illustrated in the accompanying drawings, in which;

Fig. 1, is a side elevation of the preferred embodiment,

Fig. 2, a central vertical section thereof,

Fig. 3, a section on line 33 of Fig. 2,

Fig. 4, a section on line 44 of Fig. 3.

Fig. 5, a detail view on line 5-5 of Fig. 4,

Figs. 6 and 7, sections on the lines 6-6 and 77 of Fig. 3, respectively.

In detail, the engine comprises a base casing 1, carrying a cylinder2 having the piston 3 and connecting rod 4 connected to a crank 5 disposed on the crank shaft 6 which projects through the casing 1 at its ends and carries the fly wheel 7 and gear 8 respectively thereon. At its lower end the cylinder extends into the casing, and its walls are diametrically slotted from the bottom, as at 9, a sufficient length and width to provide a clearance for the crank and connecting rod and permitting of an efiicient splash lubrication of the piston 3 through the slots 9. The wall of the cylinder is provided with a downwardly inclined intake port 10 and upwardly inclined exhaust port 11 arranged side by side and in the same plane at the interior of the cylinder. These ports register with similarly inclined transverse perforations 12 and 13 in a valve block 14 mounted on the exterior wall of the cylinder. Secured on the outer face of the valve block is a plate 15, of inverted L shape, with the short arm abutting the wall of the cylinder over the top of the valve block, and the long arm-spaced laterally from the face of the block to provide a casing for the slide valves 16 and'17. Plate-15 is provided with ports 18 and 19 in alignment with the intake and exhaust passages described and is adapted to have secured thereon the'intake andexhaust manifold (not shown). I

Journalled in the casing 1 above the crank shaft and at one side of the cylinder is a cam shaft 20, having a gear 21 mounted on its outer end in'mesh with a pinion 22 driven Cam shaft 20 from the crank shaft" gear 8. carries disc cams 23 and 24 operating in yokes25 andu26 slidably mounted in guides 27 and 28 formed on the wall of the casing,

and guides 29 and 30 formed on the ends of opposed castings 31 and 32 extending inwardly of the casing adjacentthe cylinder. These castings terminate adjacentthe cylinder to provide a clearance therebetween for the connecting rod and crank shaft operating through the adjacent slot 9. Each yoke spectively. For the protection of the valves i and stems from dirt and outside interference, an arcuate cover 39 is suitably secured to the casing 1 and plate 15. The engaging walls of valve block 14 and plate 15 are'provided with lubricating wells 40, and fora similar purpose the guides 30 and 31 are provided with transverse perforations 41 for splash lubrication of the yokes. I

The cams are so disposed on the shaft 20 and the ratio of the gearing is such, that the requisite movement will be imparted to the slide valves 16 and 17 :By the distribution andarrangement of the yokes and guides with respect to the crank shaft and connecting rod, a highly efficient lubrication of all working parts is obtained.

While I have described and illustrated certain specific details which enter into the construction and operation of the engine, I desire it to be understood that I do not limit myself to these, but that any changes may be made therein that will fall within the scope of the invention as claimed.

I claim The combination in an internal combustion engine having a crank shaft, of a base casing, vertical cylinder, an extension on said cylinder disposed within the casing and 1,0 ends of the castings, the portion of the castings: intermediate the guide flanges beingv perforated to permit lubricatlon, coacting vertical guide flanges onthe opposite Wall of th'e casing foreach set-of: guides on the castings. yokes slidably' mounted in said guides and disposed on opposite sides of the adjacent slot in the cylinder extension, a

cam shaftextending through said yokes,

cams carried thereby and disposed Within said yokes, vertical stems carried by the yokes and, vertically movable slide valves connected with the-stems,

In testimony whereof I aifiX my signature.

ADOLPH SCHAEFER'.

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