US531834A - cornwall - Google Patents

Description

(No Model) P. GHGUTEAU 8v F. R. CORNWALL.

`IIITEGIIIIENI EOE IIIEEGI ACTING ENGINES. No. 531,834.

Zay/573.9146@ NTTED STATES PATENT FFI@ PIERRE CIIOUTEAU AND FREDERICK R. CORN WALL, OF ST. LOUIS, MISSOURI;

SAID CORNWALL ASSIGNOR TO SAID CHOUTEAU.

ATTACHMENT FOR DIRECT-ACTING ENGINES.

SPECIFICATION forming part of LettersPatent N o. 531,834, dated January 1, 1895.

Application filed August 4, 1894. Serial No. 519 ,440. (No model.)

To au whom it may concern.- struction-shoulder to a flange on an interiorly- Be it known that We, PIERRE CHOUTEAU threaded collar C, which collar turns loosely and FREDERICK R. CORNWALL, citizens of the on the cylinder. The bore of the cylinder at United States, residing at the city of St. Louis, its upper end is formed with the shoulder a 55 5 State of Missouri, have invented certain new upon which rests and is loosely supported a and useful Improvements in Attachments for close tting independent cylinder head D, Direct-Acting Engines, of which the following which in conjunction with the base of the hanis a full, clear, and exact description, referdie E forms a live fluid chamber G', which encebeinghad to the accompanyingdrawings, communicates with the ports A" to distrib- 6o to Whereinute the live fluid beneath the head of the pis- Figure l is a longitudinal sectional View t0n. Thisindependent cylinder-head or auxthrough an engine'provided with our attachiliary cylinder head, as it might be termed, ments. Fig. 2 is a plan-view of the engine outside of forming the live fluid chamber for cylinder. Fig. 3 is a sectional View through the reception and distribution of the live mo- 65 t5 the handle, taken on line 3 3, Fig. l. Fig. t tive fluid to the engine, also forms a yielding is a detail sectional View, showing the parts cushion for the piston on its upstroke, as illusin a different position from what is illustrated trated in Fig. 4. The live fluid has a tendency in Fig. l; and Fig. 5 is adetail view of a modito always hold this cushioning-head D to its ication. seat et, at all times, by reason of the increased 7o zo Our invention relates to new and useful imarea presented by the upper surface over the provements in attachments for direct-acting area presented by the lower surface. Moreengines, and consists in forming an inlet port over, as the piston is ascending, the space or Way through the engine handle, whereby therebetween and the head D is being exthe conducting-pipe which connects the enhausted. Therefore, the head D is held to its 7 5 25 gine to asuitable source of supply, is in aconseat. The momentum ofthe piston on its upvenient place and out of the way of the operstroke very often vcarries it beyond its supator. posed limit of stroke, and the upper face of Another feature of our invention resides in the piston hammers itself on the end closing the improved means for attaching the handle plate of the bore. The headD Willyield under 8o 3o to the engine cylinder whereby the same may this condition and when the piston strikes, it be located at a desirable point; and, finally, in will be forced u p slightly, absorbing the shock introducing into the bore of the cylinder an or jar, and, by cushioning the parts, insure a independently-movable cylinder-head which longer life to the engine. is held in its place by the pressure of live The handle is formed withabase-portion E, 85 3 5 fluid and which acts as a cushion or butter for from which projects a threaded flange F,which the piston at the extreme of its stroke. co-operates with the threads on the collar C,

The engine which is shown in the drawings to hold the parts together. Any suitable lockis substantially the same in construction and ing device may be used to hold the collar C operation, so tar as the piston and its carried stationary, or to lock the base of the handle 9o 4o distributingwalve is concerned, as the engines and collar O to the cylinder. In Fig. 3, We have shown and described in United States Letters shown a pin .I passing through the base E, Patent No.434,976, of August 26, 1890, and No. flange F, shoulder B, and flange of collar C, 519,147, of May l, 1894. Therefore, no dewhich will retain the parts against displacetailed description need be given here of those ment, and in Fig. 5 we have shown a pin C 95 Y 4.5 parts. passing through the collar C into an opening In the drawings, A indicates the cylinder in shoulder B to prevent the collar C from formed with tool-shank opening A in its front turning. Pin C' is held in place by a strap end, exhaust port A, and inlet-ports A", as spring C. Such a construction could also be is common. Located at the upper end ot' the utilized to lock the handle base in position. Tco 5o cylinder, is an annulus or ring B, preferably Extendingtromthe handlebaseE,isahand formed integral therewith, which offers an obstock which is adapted to be grasped by the live luid chamber G.

operator to manipulate the tool. This handstock is formed throughout its length with an inlet conducting port G, which opens into the In the length of this conducting port G, is a valve H, shown in the drawings as an ordinary plug-valve, operated v by a handle H', but it is obvious that any suitable form of valve may be employed to admit or cut oft the motive fluid to the engine.

At the eXtreme outer end of the handle, we preferably form a threaded boss I, to which a suitable coupling may be attached to connect the port G with a source of supply of the motive fluid.

In Fig. 5, we have shown a modified form of the head D in which the same is rigidly held in its place by an extension on its upper face, which extension is impinged upon by the handle-base E, when it is screwed home. This construction might be desirable in some instances Where the stroke of the piston was too short to admit of its hitting the head B, but it would be advantageous to have present in the engine the live fluid chamber G.

I-Iaving thus described our invention, What we claim, and desire to secure by Letters Patent, is-

' l. In an engine, the combination with the cylinder, of an independent head mounted in its bore, a projection on said head, a cylinder head in the form of a handle base which is secured to the cylinder, and which retains said independent head in position by impingement, and a handle on said handle base, through'which handle isformed an inlet port leading to between the two cylinder heads, substantially as described.

2. In an engine, the combination with the cylinder having a ring formed thereon near its upper end, a collar loosely mounted on said ring an auxiliary cylinder head which is mounted in the bore of the cylinder, and a cylinder head which'is mounted in the collar, between which two heads is formed a live iiuid chamber, substantially as described.

v3. In an engine, the combination with the cylinder, of a ring formed thereon near its

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