US399531A - Steam-engine valve-gear - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

J. J. HEINDL.

STEAM ENGINE VALVE GEAR.

P' tent Mar. 12, 1889.

r NYEflT0R=- (No Model.)

3 Sheets-Sheet 2.

J. J. HEINDL.

STEAM ENGINE VALVE GEAR.

Patented Mar. 12, 1889.

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3 Sheets-Sheet 3.

Patented Mar. 12, 1889.

1/ 1 W 2 l 2 2/ F M F W H AME (No Model.)

J. J. HEINDL.

STEAM ENGINE VALVE GEAR.

NTTE STATES PATENT OFFICE.

JOSEPH J. HEINDL, OF BROOKLYN, i lUV YORK.

STEAM' ENGlNE VALVE-GEAR.

SPECIFICATION forming part of Letters Patent No. 399,531, dated March 12, 1889.

Application filed December 26, 1888. serial No. 294,592. (No model.

T0 aZZ "whom it 772 0.3 concern:

Be it known that I, JOSEPH J. HEINDL, of Brooklyn, Kings county, and State of New York, have invented certain new and useful Improvements in Steam-Engine Valv .--(h*ars, of Which the following is a specification, reference being had to the accompanying draw- 111gs.

My invention relates specially to the construction, arrangement, and adaptation ol :1 valve-gcar for three-cylinder engines, whereby they may be operated without the use of eccentrics, and whereby an economical admission, distribution, and expansion of the steam may be effected while passing through the cylinders to accomplish its work.

My improvements are specially adaptable l to three-cylimler or triplex pumps as a means for operating the three pumps at once and for effecting a higher movement of piston and rate of revolution. The special features of this improved gear consist in having a series of main-valve-operating levers attached directly at their shorter portions or ends to the several pistons and their longer ends to a vibrating fulcrum acting also as a support for said longer ends. To a bearing-pin formed in each of said main-val.ve-operating levers is attached a connecting-rod operating a triplecrank shaft, the cranks of said crankshaft being set at angles of one hundred and twenty degrees to each other. Said triplecrank shaft wears in special bearings and carries fly-wheels for effecting regularity of motion. This triple-crank shaft is specially located out or apart from the center line of pistonrods, and in such position that a line drawn through the center of bearing-pin for connecting-rods and through the center of crankshaft shall not be parallel to the center line of cylinder and rods to prevent the possibility of any two of the pistons or valves coming abreast of each other. The center lines of motion not being parallel to each other, the movements of cranks and pistons are not in exact unison, the cranks, for instance, having a portion of their upward or downward move ment still in progress when their associate pistons have passed to a reve se movement.

Referring to the drawings, Figure 1 represents a erosssection through one of the three cylinders, also a general mid-position arrange ment of the valve-operating mechanism. Fi 2 represents a longitmlinal elevation of a l thrcc-evlimlor engine with sectional portions of valvc-gear details of the first and second cylinders and an outside elevation ot the third cylinder. Fig. 3 represents a plan view of the three cylinders with the immediate valve-stem connections shown in section and in detail. Figs. 4 and 5 represent details of the main valveoperatinglever, that in Flg. 4.

\ having the secondary lever attached and in place, as used for operating the valves under ordinary practice, that in Fig. being without such secomlary lever, as used when steam is admitted beneath the valve, as through the exhaust-port instead of being admitted from the chest, as in ordinary practice. Figs. 6, T, and 8 are details of slide-valves in varied positions, that in Fig. 8 showing exhaust-port admission.

Similar letters of? reference designate like parts or portions in all the figures.

The letter A designates the engine-cylinders and identified in Figs. 2 and 3 by the letters A A A B design ates the piston, Fig. 1, and C the piston-rods, the rods being identified by C U C".

c designates the piston-rod bosses, to which the main-valve-operating levers D are attached. These levers are identi lied by D D and D according to the cylinder to which they belong. The shorter portions of these levers D are attached to the bosses c of the piston-rods, while the longer portions are attached to and center on a vibrating fulcrumsupport, E, attached to and swinging upon a fixed center, F.

To a lever-pin or bearing, G, forming a part of the main-valve-operating levers D, is attached a connecting-rod, H, for the purpose of operating a triple-crank shaft, 1, each crank controlling and being operated from the piston-rod of. each of the cylinders. To this same lex'enpin or bearing G is also attached a secondary lever, K, swinging upon and supported by a suspension-rod, L, as a fulcrum. Attached to the shorter portion of lever K is the suspension and connecting rod N, communicating the motion of secondary lever K to valve-lever O. M and Q are fixed brackets for supporting fulcrum-rods L and P. There are three fulcrum-rods P, one to each the shaft offulcruin-rocls P is attached a special lever, R, operated and adjusted by means of a turn-buckle, T, acting to lengthen or shorten rod-connection S, one end of which is fixed to hearing U.

V designates the valve-stems to each In Fig. 3, the plan view, it will be noticed that the gear of cylinder A operates the valve of cylinder A, gear of cylinder A that of A, and gear of A that of A In-thc general operation of this gear the position of the piston and rod, through the lever-boss (2, together with the position of the crank-shaft and connecting-rod, as also of the main-valve-operating lever I), as also, when used, of the secondary-valve-operating lever K, control the position ot the several steamvalves, while the adjusting-rod S, lengthened or shortened by the turn-buckle T, together with the attached lever R and fulcrum-sup- .port P, control the throw of the several valves.

In the sectional view, Fig. 1, the mid or central position of the several parts is shown in detail, while dotted center lines outline and define their extreme and'relative positions. Line a designates the extent of movement of piston-rod boss as well as the stroke of the several. pistons. 1;,1), and b designate the position of boss 0 and, the attached lever at extreme throw or position of pistons, also the mid-position. b b and Z1 mark the positions of 0 center for the three crank positions, as shown. (Z (Z and (1" are corresponding points of position of the lever-pin G. (l and (1 mark the positions of lever-pin G, corresponding to positions 6 and e of cranks. c c and c of crank positions correspond with (1 d, and d of lever-pin G positions, and of b b and b of 0 center. of piston-rod boss. Now lever K, when used, moves at its outer end to 71 7L3, and 71*, corresponding to positions (1 d, and d of lever-pin G center. \Vith positions 713, 71 and 7&4 lever 0 moves, through the communication of rod N, to positions f, f and f, and the opposite end of lever O, communicating with valve-stem V, moves to positions g g and g, and the valves have positions I1 [133, and 1;", all these several positions corresponding with positions e c and e of the several cranks. All these several positions, as well as those between them, are occupied by the several valves, levers, connections, and cranks, according as they move through their travel, and the. pistons move up and down or to and fro through the cylinder. Now to vary the throw of the valves, making such throw longer or shorter, as may be required, the turn-buckle or nut T is operated to lengthen or shorten the connection S, the end bearing, U, being fixed, thereby raising or lowering lever R on an are, m 'm, and the vibrating fulcrum P on the are 77 n to or from the valve-stem V, resulting in the proportionate lengthening or shortening of the throw of the valve. As the vibrating fulcrum P moves from the valve-stem, it lengthens the distance between the center P and the center of valvestem V. The fulcrum P is of course only moved to and fro by the adjustment in the length of S, and only when it is required to lengtl'ien or shorten the throw of valve \V. As shown by section in Fig. 3, the valve-operating mechanism of each engine operates the valves of some other one of the three engines, and preferably of that engine whose crank follows immediately after its own crank in the circle of revolution. Thus the valve-moving mechanism operated from crank-pin 6 moves the valves of the cylinder A operating on crankpin e the mechanisn'l operated from crankpin e" moves the valves of cylinder operating on crank-pin e, and that from crank 6" moves valves of cylinder E operating on crank 2 steam being admitted through the chest by the opening of the outer edges of the main valve and ports, after the well-known and usual manner. Should, however, some of the new forms of valves admitting steam through the exhaust-passage, instead of through the chest, be used, the valve would of course move in an opposite direction to that admitting steam direct from inclosing-chest. Then the secondary lever K would not be necessary and would be omit-ted, and connection N take direct hold of the main-valve-operating lever D, as shown in Fig. 5, at points or positions 7L2 h h of said valve-operating lever. The valve shown in Fig. 8 has the central steam admission used in connection with the lever of Fig. 5that is, the steam is admitted to the cylinder through exhaust-passage instead of through the chest, after the manner of some piston-valves now in use. A puppet-valve may of course take the place of the slide-valve V and be moved up and down by the stem V, the principal detail changes being in the shape of valves themselves.

lVhat I claim as new, and desire to secure by Letters Patent, is g 1. In a three-cylinder engine, in combina tion with the piston-rod of any one of the said cylinders, a main-valve-operating lever connected to and operated by said piston-rod and swinging upon a vibrating fulcrum, a pitman or connecting-rod joining said mainvalve-operating lever with one of the crankpins of a triple-crank shaft, a secondary'le ver connected to and operated by said main operating-lever, a vibrating fulcrum supporting said secondary lever, apitman or connection between said secondary lever and a valve operating lever, and a connecting Valve-stem and valve of a second cylinder of the set of three, substantially asset forth.

2. In a three-cylinder engine, in combination with the pistoirrod of any of the said cylinders, a 1nain-valve-operating lever connected to and operated by said piston-rod and swinging upon avibrating fulcrum, a pitman or ctmnecting-rod joining said main-valveopera-tin g lever with one of the crank-pins of a 1 ri pl e-crank shatt,'a secondary lever eon neeted to and operated by said main-valve-operat in g lever, a vibrating fulcrum supporting said secondary lever, a pitman or connecting-rod joinin said secondarylever to a slotted-valve operating lever, a vibrating fulcrum or support for said slotted-valve-operatinglever, and means for adjusting the position of said fulcrunrsupport, and a valve-stem and valve of a second cylinder of the set of three connected to and operated by said slotted-valve-operating lever, substantially as and for the purposes set forth.

3. A valve-adjusting mechanism for steamcylinder steam-chests, consisting of a slotted lever attached directly to the valve-stem, a vibrating fulcrumsupport for said slotted lever made adjustable to or from the valvestem to lengthen or shorten the throw of valve, an adjusting-arm or lever operating through a rock-shaft, to which both the vibrating fulcrum-support and the adjusting-arm are attached, a fixed bearing for the support of said rock-shaft, an d a turn-buckle rod adapted to be lengthened or shortened, one end of said turn-lmckle rod being attached to said adjust ing-arm and the other to a fixed center or swing support, substantially as set forth.

4. In a threeevlinder engine, in combination with the piston-rod of any one of said cylinders, a mainvalve-operating lever connected to and operated by said piston-rod and swinging upon a vibrating fulcrum, a pitman or conneeting-rod joining said. main operating-lever with on e of the crank-pi us of a tripleerank shat t, a rod connecting said main -valveoperating lever directly with the valve-lever, the valve-lever operating upon a vibrating support, and the connected valve and valvestem of a second cylinder of the set of three, substantially as set forth.

5. In a three-cylinder engine, in combination with the piston-rod of any one of said cylinders, a n1ain-valve-operating lever attached to and operated by said piston-rod and swinging upon a vibrating fulcrum, a pitman or connecting-rod joining said mainvalve-operating lever with one of the crankpins of a triple-crank shaft, a connecting-rod directly attached to and operated by said main operating-lever and communicating motion to and operating a slotted-valve lever, a vibrating fulcrum-support for said slottedvalve lever, and means or mechanism for adjusting the position of said fulcrum or support to effect a longer or shorter throw of valve, and a valve-stem and valve of a second cylinder of the set of three connected to and operated by said slot-ted lever, substantially as and for the purposes set forth.

0. In a thrce-cylinder-engine, the combination of the piston-rods of said engine, mainvalve-operatiug levers connected directly to said piston-rods and swinging upon a vibrating fulcrum, connecting-rods joining said levers to the cranks of a triple-crank shaft, said crankshaft bein placed in such position that the center line of motion of said connectingrods shall not be parallel with the center line of motion of the said piston-rods, whereby the movements of the cranks, valves, and pisston-rods are never in exact unison with each other, substantially as set forth.

JOSEPH J. HEINDL.

\Vitnesses:

W11. H. WEIGHTMAN, )[ANUEL RODRIGUEZ.

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