US573100A - Valve-gear for engines - Google Patents

Description

(No Model.)

P. MUNDT.

- VALVE GEAR FDR ENGINES. No. 573,100. Patented Dec. 15, 1896.

- 2 F ,Z' d 7 MZHESGES.

PAUL MUN DT, OF BROADWELL, ILLINOIS.

VALVE-GEAR FOR ENGINES.

SPECIFICATION formingpart of Letters Patent N 0. 573,100, dated December 15, 1896. Application filed July27,1896. fierial No. 600,733. (NonioclelJ To all 2071 0122 it may concern..-

Be it known that 1, PAUL MUNDT, a citizen of the United States, residing at Broadwell, in the county of Logan and State of Illinois, have invented certain new and useful Improvements in Valve-Gear for Steam-En gines, of which the following is such a full, clear, and exact description as will enable those skilled in the art to which it appertains to make and use my said invention.

The purposes of my invention are to provide mechanism of novel and improved form adapted to operate the slide-valve of the engine, and to provide an engine-frame so constructed and arranged that said valve-actuating device may be supported thereon in suitable position to be connected with the connecting-rod of the engine, and to provide simple and effective means whereby the valveactuating device may be adj ustablyconnected with the connecting-rod of the engine.

"With these ends in view myinvention consists in certain novel features of construction and combinations of parts shown in the annexed drawings, to which reference is hereby made, and hereinafter particularly described and specifically claimed.

Referring to the drawings, Figure 1 is a top plan View of the complete mechanism. Fig. 2 is a vertical longitudinal section on the line 2 of Fig. 1. Fig. 3 is an enlarged vertical transverse section on the line 8 of Fig. 2. Fig. 4 is an enlarged detached perspective view of the link-block and link forming part of the connection between the conn ecting-rod and the valve-rod of the engine. Fig. 5 is an enlarged detached perspective view of the adjusting'block which fits inside of the linkblock and on top of the connecting-rod.

Similar letters of reference designate like parts in all of the views. i

The main frame and the cylinder of the engine are preferably of cast-iron, and the base A, the side pieces A, the cylinder A the steam-chest A and the cross-head guides at are cast in one piece and are supported on any suitable foundation B. The crank D is secured to the crank-shaft D, which turns in suitable bearings O. The piston-rod E is connected with the crank D by means of the connecting-rod E and the cross-head F in the usual well-known manner.

I will now describethe peculiar construction of the cross-head guide.

The upper part of each of the cross-head guides a is recessed to a depth sufficient to accommodate the cross-head F and the upper guide-plate a. The plates a are secured to the guides to by means of bolts a which pass through. the holes in the plates a and screw into the ledges d on the cross-head guides.

The link G is supported and oscillates in boxes 9 on the base A. The upper end g of the link G fits in a box 7L on the outer end of the bar Il. The valve-rod N slides in standards N, and the bar II is connected with the valve-rod by means of a collar 71/ A key h serves to adjust one-half of the box It in the end of the rod 11. The lower end g of the link G fits loosely in a hole k in the block K. A vertical slotted standard J is secured to the main frame. A boltj passes through the slot in the standard J and screws into the hole It and serves to connect the block K with the standard J in such manner that when the block is raised or lowered the bolt j will slide in the slot in the standard. The block K has a central transverse opening through which the connecting-rod E passes. The lower surface of the opening 70 is convex, as shown in Fig. 4, in order to permit rocking movement of the block K on the connecting-rod.

The adjusting-block M fits loosely in the transverse opening of the block K. The block M has vertical side walls 012, which, when the block is in position in the transverse opening in, abut against the sides of the block K, above the opening 7c, and serve to prevent displacement of the block M. Midway between the side walls of the block M is a convex surface m. lVhen the block M is in position in the opening in the block K, the flat surface of the block M contacts with the upper surface of the connecting-rod E, and the screw k which screws into a hole in. the top of the block K, bears on the convex surface m'. When the blocks K and M are properly adjusted relative to the connecting-rod E, the connecting-rod slides through the transverse opening 70 and under the block M, and as the rod E reciprocates the block M rocks on the lower end of the bolt 70 so as to prevent binding of the connecting-rod in the opening, and the screw 70 may be so adjusted as to take up lost motion or wear of the parts.

It will be seen that by means of the connection described the reciprocating movement of the connecting=rod E raises and row ers and oscillates the block K, so as to impart a rocking movement to the rod G, Which in turn imparts a reciprocating movement to the rod H and the connected valve-rod N.

The operation of the mechanism is obvious from the description, 7 I

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, .is'-- p 1. A valve-actuatingdevice for steanren gin e's, consisting of a block sliding vertically on a standard seem-ed to the bed-plate and having a transverse opening through Which the eenne-etingneci or the engine slides, and a rocking link connected With said block and with the valve-rod of the engine, substantinny as set forth.

a. In a steam-engine the combination of main frame, a cylinder, a pistonnn'd Working in said cylinder, at steam-chest, a valve-rod working in said steam chest, a rotatable crank-shaft and crank, a connecting-rod connetting said crank with said piston-rod, a slotted standard secured to the main frame, a block K fitting on the connecting-rod and slidably connected with said standard and a rocking link G connected with said block and with said valve-rod, as set forth.

3. In a steam-engine the combination of a main frame, a slotted standard secured thereto, a reciprocating connecting-rod, a block K having a transverse opening it through which the connecting-rod passes and sli'dabljy connected with said standard, a block M fitting in the transverse openin in the block J and having a convex surface, a screw 70 in the block K bearing on the convex snrfa'ce of the block M, a rocking link G connected with the block K and a rod H connecting said rocking link with the valve-rod, as set forth.

In witness whereof I have hereunto subscribed my name, in the presence of two wit= messes, at Lincoln, Illinois, this 24th of July, 1896.

PAUL MUNDT.

\Vitnesses:

JOHN H, Sins, HENRY ISENBERG.

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