US1336298A - Internal-combustion engine - Google Patents

Description

H. V. J. JOUFFHET.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED Aus.25, 1917.

1,336,298, Patented Apr. 6, 1920.

HENRI vieron JULnsJoUrrnr-ir, or Panis, FRANCE.

INTEBfNL-CGMBUSTGN ENCT'ITE.

Specification of Letters Patent.

Patented Apr. 6, 1920.

Application filed August 25, 1917. Serial No. 188,204f

A that is so that t1 ey require less fine machine work while at the same time they are superior to and more easily taken to pieces than is the case with engines'as present constructed.

in the ns i method of constructing engines of this crass, the head is provided with a cylindrical enlargement and between the outer wall of the said enlargement and the inner wail. of the head is an annular space adapted to receive the upper end of the sleeve or sleeves.

rlie present invention consists essentially in providing, in place of the construction just mentioned, a piston connected by means of a suitable joint to the head, which piston has the same function as the aforesaid enlargement.

The invention refers moreover, in addition to the principal feature just mentioned to certain other constructional arrangements which will be more fully described hereafter and it comprises certain structures to carry the invention into eifect, and, as new industrial. products engines of the class in question comprising the application of the improvements, as well as special parts suitable for their construction.

In order that the invention may be clearly' manner, into an annular portion of the head and the following or some analogous construction is adopted.

o is the cylinder which is provided with an ordinary head 0.1. t1 and. b2 are the two slefwes mounted concentrically and having their movements controlled in the ordinary manner.

c is a piston, the outer diameter of which is equal to the inner diameter of the small sleeve b2.

rhis piston c is connected by means of a controlling rod (Z of appropriate length to the head al, the said connecting rod being jointed to thevpiston and to the head in any suitable manner, preferably by means of a universal joint.

lilith this construction the piston takes the place of and fulfils the same functions as the inner cylindrical enlargement usually proviled; but, two important advantages accrue.

(ln the one hand the centering` of the piston is automatically effected thus avoiding the complicated and delicate methods of centering and smoothing the head, where the head. is separate from the cylinder and the difficult machining of the annular chamber for the reception of the upper edge of the sleeve where the head is in one with the cylinder. In addition by regulating the length of the connecting rod, the compression of the engine may be easily regulated.

in some instances in addition to providing the simple construction just described, it is preferable to embody the whole or part of the following improvements. Packing rings c1 may be furnished adapted to increase the tightness between the piston c and the sleeve Z22.

The piston c may be provided with a closed top or cover 00, thus avoiding' the accumulation of lubricating oil within the cavity. The connecting rod Z is in that case jointed to the cover 0.

The shaft c and the eccentric f are preferably located in the head, or other like mechanism for controlling the sleeves may ,be similarly located, an arrangement rendered possible by the absence of the cylindrical enlargement in the head.

As regards the cooling, where the conductivity of the walls of the piston is not sufficient to secure it, this may be effected by providing a conduit for cooling liquid,

conducting the same in the interior of the piston adjacent to the closed bottom of the piston. This conduit consists preferably of a flexible pipe, which need only be slightly elastic. A flexible outlet pipe /i is connected to the cover or top o0 to provide for a circulation of the cooling medium or liquid in the piston.

It is to be understood that the invention is not limited in any Way to the method of carrying the same into effect, which has been more particularly described, but that all modifications are included, Which fall Within a fair interpretation of the claims.

What I claim and desire to secure by Letters Patent of the United States of America is l. In an internal combustion engine of the class described, the combination of a cylinder, an enlarged head for such cylinder, a sleeve valve sliding in said cylinder and having the top edge thereof entering the enlarged head and a fixed guide piston .vith which said sleeve has sliding association and hingedly connected to the said head and acting as an internal cylindrical projection of the cylinder head, the piston being formed with a closed chamber.

2. In an internal combustion engine of the class described, the combination of a cylinder, an enlarged head to such cylinder, a

sleeve valve sliding in said cylinder and having the top edge thereof entering the enlarged portion of the head, and a guide piston sliding Within the said sleeve and connected to the said head by means of a jointed connecting rod, such guide piston having a cover so as to form a closed chamber Within the piston, substantially as and for the purposes set forth.

3. In an internal combustion engine, of the class described, the combination of a cylinder, an enlarged head to such cylinder, a sleeve valve sliding in said cylinder and having the top edge thereof entering the enlarged portion of the head, and a guide piston sliding Within the said sleeve and connected to the said head by means of a jointed connecting` rod, such guide piston having a cover so as to form a closed chamber Within the piston, and flexible conduit connections for a cooling medium communicating with the interior of the said piston.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

HENRI VICTOR JULES JOUFFRET.

Witnesses CHAs. P. PREssLY, EUGNE TULLIER.

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