(No Model.)
J. F. POND.
ASTEAM ENGINE.
Patented Oct. 9, 1883.
L11/vena? 'ii-Nifrnn Srnrss Fries..
iiarsfnr STEAM-ENGINE.
SPECIFICATION forming part of Letters Patent No. 286,482. dated October 9, 1583.' v
(No model.)
I ttZZ whm/ it may concern.-
Be it known that I, JOSEPH F. POND, of Cleveland, inthe county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Steam-Engines, of whichthe following is a speciiication.
My invention relates to steam engines 5 and the novelty consists in the construction, arrangement, and adaptation of parts, as will 1o be more fully hereinafter set forth, and specifically pointed out in the claims. It is well known that there is a latent poweror force in steam which is developed when the steam-atoms are broken or disintegrated.
This breaking up of the atoms has before been attempted by a separate force. f I seek to accomplish the same end by the force of the steam itself.
In a steam-cylinder having ports upon a 2c single. side the admitted steam first strikes the side of the cylinder apd then reverberates. I seek to obviate this by having the currents of steam meet their first resistance at the center of the cylinder.
1 In steamengines where but one steam-oonnection leads to the steamchest only that amount of pressure can be obtained which the capacity of that .connecting-pipe will allow.
I provide twosuchconnections, and conse- 3o quently feed to the cylinder a greater amount of steam and pressure at the beginning of the stroke as the crank passes over the center.
The 0lojeot, in general, of my invention is` cussion is produced, a given amount of friction is obtained, which in every instancecreates heat, thus producing in a degree superheated steam.
The invention contemplates developing the latent power of steam by liberating said power in the destruction or breaking up of the It contemplates arranging two steam-chests on opposite sides of the cylinder, said chests receiving equal pressures of steam from the boiler, and each having port-connections with the cylinder in the same transverse plane, whereby the valves, which operate simultaneously to disclose either pair of ports, will admit the steam into the cylinder in opposite directions. Said currents of steam, meeting, `as aforesaid, will increase the steam-pressure within the cylinder to a point greater than the pressurel in either of the chests or within the boiler. f
It also contemplates means whereby the pistou is held in the center of the cylinder, and unequal friction, by reason of the piston being forced toward one side of the cylinder by the action of the steam entering either wholly or a preponderance thereof from one side of the cylinder, is prevented. n
To these ends the invention consists in the mechanisms fully illustrated in the accompanying drawings, which form a part of this speciiication, and in whichi Figure l is an elet/'ation taken at right angles to the plane of the main shaft, and Fig. 2 a central vertical section.
Referring to the drawings, in which similar letters of reference indicate like parts in both the figures, A designates the cylinder, mounted `upon the frame B, and C is the pistonhead, mounted upon the stem c. This stem is properly connected by cranks (not shown) to the shaft S, to which, by eccentrics or cams and straps I and I', are connected the valverods 71. h of the valves II H.
The cylinder A is provided with steamports D D E E', and the valves H H operate in steamrhests G G', arranged on opposite sides IOC Y v boiler.
of the cylinder. Separate pipes g and g connect the steam-chests with the boiler, and separate exhausts R connect the cylinder with a main exhaust, Q. The cylinder A is provided Vwith exhausts F and F.
Now, it will be observed that the valves H and H move simultaneously, and that each steam-chest receives its steam direct from the As'the valves move together in either direction, one pair of steam-ports D D is uncovered, and the steam, at equal pressure, rushes in opposite directions through said ports, the currents meeting in the center of the cylinder, directly behind the piston-head, holding the piston in the center of the cylinder, the concussionl caused by the Contact of the two currents breaking up the steam-atoms and liberating the latent force therein, the steam impacting behind the piston-head and in the center of the cylinder, thus obtaining at this objective point a pressure at the moment of contact greater than that in either of the chests or in the boiler.
Having thus fully described the invention, what I claim as new is- 1'. An engine-cylinder having only two inlet-ports located at diametrically-opposite.
sides of the' cylinder, and provided with suitable valves for controlling said ports simultaneously, whereby the steam is conducted to the center of the cylinder from two opposite sides, substantially as herein described.
2. An engine-cylinder provided with two separate steam chests located on diametrically-opposite sides of the cylinder, two steaminlets and two exhaust-ports, and suitable valves for simultaneously controlling said ports, substantially as described.
8. An engine-cylinder having two inlet-ports and separate steam-chests located at diametrically-opposite sides ofthe cylinder, suitable valves simultaneously operated, and independent boiler-connections for each chest, substantially as herein shown and described. y
4. An engine-cylinder having two ports and steam-chests located at diametrically-opposite sides of the cylinder, suitable valves for controlling said ports, and separate boiler-connections provided with Valves,` substantially as and for the purpose specied.
JOSEPH F. POND.
Witnesses: l
E. W. LAIRD, GEO. W. TIBBITTs.