US180040A - Improvement in valve-motions for steam-engines - Google Patents

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G.KLUG. Y VALVE MOTION FORI STEAM'ENGINES. No. 180,040, Patented Ju1y18,1876.

Mbzsses l- Y Y K WM /fY/@f UNITED S'IrvrEs PATENT' OEEIoEc GEoEGE KLUG, oE EAMBEG, GERMANY.

IMPROVEMENT fN vALvE-ivlorioNsl-'OR STEAM-ENGINES. l

Specification forming part of Letters Patent No. 180.040. dated July 18, 1876; application'led April 11, 1876.

.To all whom tmay concern Be it knownthat I, GEORGE KLUG, of the city of Hamburg, Germany,A engineer, have invented a new and useful Improvement in Valve-Motions and Reversing-Gear for Steam- Engines; and I do hereby declare that the followin is a full clear and exact descri i! tion ofthe same, reference being had to the accompanying drawing, which forms part of this,`speciiication, and which represents my improved valve motion and v reversing-gear applied to the slide-valve of a steam engine, and showing th'e same in various positions.

In said drawing, in signifies center of crankshaft. e signifies eccentric. llsignify a guiding apparatus, movable on a certain point in a circular' direction. o signifies fulcrum or Apoint on which the guiding apparatus turns. x :v signify angles, showing direction of turning guide l l on point o. efe signify eccentric-rod. m o signify direction of eccentric-rod .und guide l l in their middle position. c t' signify connecting-rod for the steamvalve of the cylinder. i k signify middle position ofthe same rod. u u e lv signify lines showing outer and inner lap of valve. :v signifies angle of-'inclination between i 7c and center line of cylinder.

I only use one eccentric, e, with my motion and reversing-gear, the rod of which., c f c, is connected by its end c with the valve-rod c t. \Vhen the engine is in motion, the eccentricrod receives in a point,f, of its middle part a motion in a certain line, ZZ, the direction of which 'can be altered. This motion ofthe pointf ol' the eccentric-rod is caused by means ofajoint-piece, which has a rotating motion with thc fulcrum j', and at the same time is guided along line l l, inthe direction of which the guiding apparatus is capable of being moved on point o. If the guide lZis in its mean position, m o, the engine stops; but a rotation of the guide l l, say equal to the angles w will cause a forward or backward motion of the engine. The guiding-linel Z of the guiding apparatus is curved circular in the plane of the angles .fr but, according to the corresponding radius of curvation, this curve may be a sharp one, and, if a' slight curve, of 'no practical value. The guide Z Z, `Working upon a point, f, ofthe middle part of the eccentric-rod,in connect-ion with its shape, produces my new valve-motion in the point c of the eccentric and valve-'rod in the direction ofthe center line z 7c of the valve-rod. This valve-motion may be alteredin stroke or direction yby transmissions placed between ci and inner valve-rod.

The relation between the different dimensions of eccentricity e 1n, eccentricrod ofc,

radius of cnrvations and angles as a: of guide ll gives the means of effecting an excellent distribution of steam for the corresponding engine. Therefore, the radins of cilrvation of the guiding-line l l depends upon the construction df theengine, and chietly upon the relative dimensions of Iconnecting-rod and crank. y

For horizontal engines, with long connecting-rods, for example, the guiding-line can be made straight, and on the contrary for vertical engines, as used in screw-ships, the guidingline may be'made of a sharp cnrvation'.

The position ofthe eccentric e on the shaft is shown in the drawing. Itdepends'alone on the position ofthe fulcrum o relative to the shaft m, and is fully ont of connection with the lead, expansion, or compression. The

position of eccentric is such that., supposed av correct length of eccentric-rod in cj', if the crank is at the dead-points, the guided point j' of the eccentric-rod falls within the axis o of guide l l. .6

What I claim as my invention is The combination ofthe eccentric or crankpiu and its rod efe, the angularly-adjnstable guide or lever l l, along which and to opposite sides 0f its fulcrum o the eccentric-rod a't its center f is free to slide, and the valve-rod ,e t', all arranged for operation in relation with the crank-shaft of the engine, substantially as shown and described, and for the purposes herein set forth.

GEORGE KLUG. Witnesses:

E. BOEHMEE, ERNST SPAXKMANN.

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