US11546A - bristol - Google Patents

Description

UNITED sfrarns rA'rENT OFFICE.

R. `oBRIsToL, oF CHINA, MICHIGAN.

R'IARY ENGINE.

Specification of Letters Patent No. 11,546, dated.Auf'gust` 22, 1854.

To all LU/wm t may concern Be it known that I, RICHARD CBRIs'roL, of China, in the county of St.` Clair and State of `Michigan,` have invented certain new and -useful Improvements in Rotary Engines; andl do hereby declare the fol-` lowing to bea full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, in whlchs Figure l, represents a perspective view,

Fig. 2 represents a vertical longitudinal sec-` tion, Fig.`3, represents a vertical transverse section, Fig. 4, represents a longitudinal section through `one of the abutments, and

showing themannerof packing, Fig. 5, rep- .presents a longitudlnal section through one` of the chambers, and Fig. 6, represents a detached portion vofthe ring and one of the i ends of the case or outside cylinder,in secp tion.

Y atmospheric pressure upon them, from causl ing too much friction. Also, in the method Similar letters where they occur refer to like parts.

s The nature `of my invention relates to the resting of the outer cylinder by lugs upon a convex bearing, with a plate interposed adjustable by set screws, or by a wedge with.- out a plate, by which means the outer cylinder can bemade to conform to all possible variations of the shaft and inner cylinder.

Also, in driving out the slides by steam act-= ing under pistons at each end of` them, two being drawn out in equilibrio, `while the other two are being acted `against to pro-` Also, in using a cock lor` valve in the exhaust pipe to be lclosed before starting the l engine, for the purpose of illingthe engine pel.

with steam, and causing the pistons to force out the slides. Also, in the metal rings upon the outer head being fitted over the elastic packing, and `forced up to the ends of the` cylinder by springs, thus providing for ex-v pansion and contraction of the metals.`

Also, in holding back the metal rings aforesaid by screws or otherwise to prevent the of making the joint in the abutment, by which it is made adjustable, "and perfect on.

the face ofthe inner cylinder at the end` `of the abutment and on the periphery of the inner heads. s

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings. j

,i A, is the frame of the engine.

. j B, B, are the journal boxes (one only be- `ing seen) `for receiving the main shaft S,

to which the revolving part of the engine is secured.4 C, is theoutside cylinder; it is bored true-faced at the ends, and is surrounded by a steam case E, which is fur- '1" nished with lugs F, F, upon which it is supported on the frame. `The side railsv of the frame A, are convex, and upon `them are placed the supportingplates a, which are made adjustable by set screws therein, or

by wedgesfunderneath them, and upon these plates, the lugs F, rest, and the outer cylin-` der is thusI `made adjustable, so as to conform to all possible variations of the shaft and inner cylinder. By examination `it will be found that this" adjustment varies essentially from that of James McKay., patented in 1853. McKay supports his outercylinder upon axes at right" angles, and `on a plane` with the main shaft, which will only 1 allow it to move up or down at theends, las

the shaft may do; whereas by my plan, it will allow the cylinder to move in any direction-the ends may go up, down or laterally, the height being readily adjusted by i the set screws and plates under the lugs, which lugs may be on a plane with the shaft, `above or below it as maybe found most convenient. 1 j

The double steam case E, has passages b 7J Figs. 2, 3,4, 5, both encircling the cylinder, but independent of each other, the former communicating with the interior of the cylinder through `openings c c and d d,

Fig. 3, and the` latter (b) communicating with the same by openings c 0 and d d" (same figure). Onl top of the outer cylinder is the steam chest Gr, which may be supplied with steam from the boiler, through the pipe J. K, is the exhaust pipe, to re- P0rut f, (Figs 2, 3 N, NQN, Nff, are four sliding pistons. They are" set in the slots, t', c', c', of the ceive the whole steam through theexhaust steam wheel, which is composed of a cylinu der D, having a hub g, secured on the shaft S. In McKays patent, before referred to, the slides or wingsare forced out by letting steam under them while there is no steam operating upon the engine. I force them out by steam under pistons at each end of two ofthe sliders, while the other two sliders are doing their work in propelling the shaft. The cylinder C, being stationary, and the vao steam acting inside of it on lthe sliders, it moves the wheel co-mposed of the cylinder D, hub g, and shaft S, with theirv various parts, which form the rotating parts of the engine. Then the engine is running in one direction, it takes its steam by only one of the slide valve ports, and is shown in Fig.

2, to be taking the steam through the pasa sage e. When moving in a contrary direction it takes its steam by the passage e', where it is now shown exhausting thevsteam through the cavity of the slide valve H, and through the exhaust port f, into pipe K. The slide valve G, iS for reversing the motion o-f the engine which may be moved by a rod and lever in the well known way of performing this operation,.and is like those in common use.

R, R, are two fixed abutments attached to the stationary cylinder C. rlhese abutments have concave flan-ges fw, w, branching from their apices, and have packingbars m, m, which are adjustable by screws p, p, to press them steam tight against the rotary cylinder.-

'In Figgf, one of the packing bars m, with its adjusting screws is distinctly seen. The bar has a lap joint m, near the center, and inclined planes y y at its ends. Upon the inner ends of the adjusting screws p p, are two followers e, e, which have one straight andk one inclined side-the latter resting against the inclined planes on the ends of .the bar, so that by turning the screws 7J, p, said bar may be brought up steam tight against the rotating cylinder. The bar m', and set screws 20 p, are for controlling the bar m in the other direction. There are small flanges 2, 2, on the extreme ends of the bar m, which cover the oint 3, and rest against the packing il, which is also adljustable from t-he outside of the cylinder by the screws 5, so that the packing bar m, extends entirely through the cylinder and is adjustable from the outside, and makes aperfect steam point throughout its entire length. The engine is represented as receiving the steam through the ports c 0, on both sides of the engine, the one at the right hand side (Fig. 3) on the upper side of the abutment, and at the other side beneath the abutment7 causing the engine to rotate in the direction of the arrow. The steam exhausts at. the right hand side through the ports below the abutment, and on the left hand side above the abutments. When theengine is moving in a contrary direction, the present steam passages become the exhaust passages. The slides N, N', N, N, by this arrangement of the steam and exhaust ports, are relieved o-f all the steam pressure when passing the abutments, so that there is very little friction upon them. In other rotary engines the chambers u, u, u, u, in both ends of the engine. The ends of thesliders have projections outside of the ends of D, these are connected to small pistons in the chamber u u, which small pistons are actuated by steam in the chambers at the ends of the cylinder. The steam from the small pistons is exhausted before a slider comes to an abutment, but co-mmences to press out the slider when it passes an abutment. These sliders work free in their recesses t 2', in the arms h, it, but are always pressed steam tight and allow nosteam to pass them. l

M,L M, are the inside cylinder heads, in which there are slots for the projections of sliders,v which slots serve as guards andbearings for the ends of sarid sliders. O, O, are other cylinder heads, secured'by bolts o, o, and fitting close to M, M, but have flanges P, P, all around the outer side.

Q, Q, are metallic packing rings, corresponding lwith the size of the interior of the outer cylinder, and fitting closely over the inner heads M M. Under t-hese packing rings, there is an elastic packing 6, Fig. 2, and back of them are springs 7 Fig. 6, for the purpose of providing' for the expansion and contraction of the metals, and the` metal rings are in turn held back by screws 8 or otherwise to prevent the atmospheric pressure upon them, from causing too much friction.

L, in Fig. l, represents4 a stop. cock or valve in the exhaust pipe, which must be closed previous to the starting of t-he engine, for the purpose ofiilling the engine with steam, and causing the pistons to force out the slides. VVitho-ut this ora similar contrivance the steam would blow through the engine without affecting any of the moving parts or bringing them into action. Upon closing this valve and admitting the steam, the slides are immediately thrown out, by the action of the steam under or behind t-he pistons, then by opening the valve the engine is ready to run.

The metal rings Q, Q, Figs. l, 2, 6, are fitted to t-he outer heads O, of the cylinder,

and have underneath them elastic packing free running of the engine. To counteract such effect, the metal rings are held back, or in any fixed position by means of the screws 8, passing through the outer head and into the packing rings, and thus a tight joint is made, which shall not however have any unnecessary pressure or friction upon it other than is incident to making it tight.

I-Iaving thus fully described the nature of `my invention what I claim therein as new and desire to secure by Letters Patent is 1. The resting of the outer cylinder by lugs, upon a convex bearing, with a plate interposed and made adjustable, by `set screws, or by wedges, for the purpose of adjusting the outer cylinder, to any and all possible variations of the shaft and inner cylinder, substantially as described.

2. I also claim driving out the slides by steam acting under pist-ons at each end of them--two being drawn out in equilibrio, while the other two are being actedv against to propel the engine, substantially as described.

3. I also claim using a cock or valve in the exhaust pipe, to be closed before starting the engine, for the purpose of filling the engine with steam, and causing the pistons to force out the slides, which fall back upon stopping the engine, substantially as described.

4L. I also claim the metal rings upon the outer head, fitted over elastic packing, and forced up t-o the ends of the cylinder by springs, `tor providing for the expansion and contraction of the metals as set forth.

5. I also claim in combination with the rings thus forced up the use of set screws for restraining the action of such springs, and preventing the atmosphere from causing undue pressure or friction on said rings.

6. I also claim the peculiar method of making the joint in the abutment, so as to be adjustable and perfect on the face of the inner cylinder at the end of thevabutment, and on the periphery of the inner heads, substantially as described.

. R. C. BRISTOL.

Witnesses:

J. P..WooDBURY, I. S. CLARK.

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