US530908A

US530908A - staub

Info

Publication number: US530908A
Authority: US
Publication date: 1894-12-11
Anticipated expiration: 1911-12-11

Description

(N0 Model.)

H. STAUB. ROTARY STEAM ENGINE.

Patented Dec. v1'1 Il! Illllli N o Modlel.)

'H.'STAUB. ROTARY STEAM ENGINE.

8 Sheets-Sheet 2; l

No. 530,908'. Patented Deo. 11,4894.

I so

NiTnD STATES PATENT Frio.

HENRY STAUB, OF ALIEGIIEN Y, PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH TO GUSTAV PEYER, OF SAME PLACE.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 530,908, dated December 11,1894'.

applicati@ nea June 4,1894. seran no. 513,461. (Numan.)

To @ZZ whom it may concern.-

Beit known that I, HENRY STAUB, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Rotary Steam-Engine, of which the following is a specication.

My invention relates to rotary steam engines of the class known 'as eccentric pisvton; and it has for its object to provide a ment, and a wing or web carried by the cylinder and slidably swiveled in the core forming the movable abutment. The steam-inlet is arranged axially with relation to the cylinder, and is preferably formed by a bore in the driven-shaft, the inlet opening being controlled by a suitable valve mechanism to admit steam continuously or at intervals, as may be required.

In the course'of the following description various objects and advantages of the invention will appear, and the Vnovel features of the construction are particularly pointed out in the appended claims.

In the drawingsz-Figure lis a longitudinal central section of an engine embodying my invention. Fig. 2 is a transverse section on the line 2-2 of Fig. 1, with the cap-plate of the cylinder omitted, and showing the cylinder and core in their initial positions. Fig. 3 is a similar view, showing the cylinder and core at the quarter-revolution. Fig. 4 is a similar View, showing the cylinder and core at the half-revolution.V Fig. 5 is a transverse section of the steam-chest. Fig. 6 is a detail view in perspective of a portion of the drivenshaft showing the steam-inletpport and the controlling-valve. Fig. 7 is an inner face view of the removable cap of .the cylinder, and showing in dotted lines the radial channel communicating with the axial steam-inlet pipe, whereby the steam is conveyed to the transverse steam-duct in the cylinder. Fig. 8 is a detail View in perspective of the con- 55 trolling valve.

Similar numerals of reference indicate correspondng'parts in all the figures of the drawlngs.

1 designates therotary cylinder, compris- 6o ing the ring 2, the rear plate 3, having a concentric sleeve 4, and the face-plate 5, said ring being divided at one side in the construction illustrated in the drawings for the reception of a radialwing 6, which, as hereinafter more fully explained, forms the movable abutment. The sleeve4 is mounted upon aspindle 7 secured in a bearing 8 in the standard 9, which may be secured to a base-plate 10, and the front cap-plate 5 is also provided 7o u with a sleeve l1 secured to the driven-shaft 12. The spindle 7 is provided at the inner side of the cap 3 with a collar i3, and beyond the said collar with an eccentric journal 14, upon which is revolubly mounted the core l5. The inner end of the radial wing 6 is swiveled in the side of the core by means of a rocker 16 formed in separable parts or members 17 having flat inner surfaces in contact with the v wing and convexed outer surfaces to tit in a So cylindrical seat 18 arranged longitudinally near the surface of the core. A cavity 19 is formed in and communicates with this seat to allow free movement of the extremity of the wing when the core and cylinder are ap- 8 5 proaching or leaving their initial position, as shown in Figs. 2 and 3.

The radiusof the core is such as to cause the surface of the latter to bear at one point against theinner wall or bore of the cylinder, 9o as will be seen by a comparison of Figs. 2, 3 and 4, whereby the inner wall of the cylinder is arranged at a tangent to the core, and a cavity 2O may be and preferably is formed in` the core opposite the above described scatto avoid irregular movement of the core.

The front cap 4 is .provided with a radial channel 21, which communicates at its inner end with the bore 22 in the driven shaft, said bore 22 forming the axial steam-inlet pipe and roo communicating at its outer end with a transverse steam-chamber 23, which is formed in the inner surface of the wall of the cylinder contiguous to the plane of the above described radial wing. The steam-exhaust port 24 is formed in the wall of the cylinder on the opposite side of said wing and adjacent thereto.

The driven shaft is mounted in a bearing 25 in oneend ofthe steam-chest 26, saidsteamchest being mounted upon a suitable standard 27, which is secured to the above mentioned base; and the other end of the steam-chest is closed by a removable cap 2S, also provided with a bearing 29 for the driven shaft, as shown clearly in Fig. l. means for communicating power to the machinery to be driven, is secured to the exterior portion of the driven shaft.

The steam-inlet pipe, which in this case is formed asabovedescribed in the drivenshat, is provided with an inlet-port 3l arranged spirally, and slidably mounted upon this pipe is a controlling valve 32 having aspiral face 33. The valve is preferably splitand provided at its extremities with an adjustingscrew 34, whereby it may be adjusted to the size of the pipe to take up lost motion by wear or otherwise, and the valve is further provided with an operating stem 35, which extends through a guide-opening 36 in the removable cap of the steam-chest,and may be provided with any suitable operating mechanism, as a system of levers,shcwn.at37. I t will be seen that the valve remainsstationary during the rotation ofthe inlet-pipeor driven shaft, and therefore owing to the spiral face thereof it is obvious that according tothe position of the valve the inlet-port may be closed entirely or allowed to remain permanently open, or may be opened and closed at longer or shorter intervals, as preferred. It' the annular portion of the valve is arranged in alignment with the inlet-port, said port will remain permanently closed, and if the valve is withdrawn so that therotation of theshaft does not bring the port under any part of the valve, said port will remain permanently open; but if, on the other hand, the valve is arranged at an intermediate position theport will be carried under a portion of thevalveat each revolution and therefore the port will be alternately opened and closed and theintervals of opening and closing will be varied according to the relative position of the valve. The narrow portion 38 of the valve is arranged at such a point as to admit the full head of steam when the valve is open, as the cylinder and core reach their initial position, as vshown in Fig. 2.

From the above description it will bescen that the cylinder and core rotate in the same direction and synchronously by reason of the radially disposed wing, and that with the parts in the positions shown in Fig. 2 when steam is admitted it enters the transverse steam-chamber in the wall of the cylinder and imparts motion in the direction indicated by the arrows in said Fig. 2.

It will be seen that the contacting` surfaces A pulley 30 or other From the above description it is obvious d that the number of contacting movable parts is small, and the major portion of the friction `iscaused between the Wing and the rocker arranged in the core, this being a sliding connection. The friction between the surface of the core and the walls of the cylinder is small, for the reason that said parts move in the samedirection and atapproximately the same speed, the relative positions of the cylinder and the core remaining the samethroughout the revolutions of said parts.

Various charges in the forn1,proporti.on, and the minor detailsot' construction may be resorted to without departing from the spirit of the invention or sacrificing any of the4 advantagesthereof.

Having described my invention, what I claim :is-

l. In a rotary engine, the combination with a casing, a driven-shaft, a rotary cylinder fixed tothedriven shaft, a rotary eccentric core arranged in the cylinder in contact with one sido thereof, and awing carried by the cylinder and connected to the core, whereby motion is communicated from the cylinder to the core, of a steam-inlet channel arranged concentric with the cylinder and communieating by a radial passage with an inlet-port in the wall of the cylinder, substantially as specified.

In a rotary engine, the combination of a casing, a drivenshaft provided with an axial steam-inlet channel, a` valve for controlling the inlet of steam, a cylinder concentric with and carried by the driven-shaft, a rotary eccentric coremounted withinithe cylinderand in contact at one side with the inner surface thereof, and a wing carried by the cylinder and connected to the core, substantially as specified.

3. In a rotary engine, the combi-nation of a casing, a rotary cylinder having concentric sleeves mounted in bearings in opposite sides of the casiug,a fixed spindle arranged in the sleeve at oneside of the cylinder and provided within the cylinder with an off-set or eccentric journal, a core mounted upon said eccentric journal, a wing carried by the cylinder and connected to the core, a tubular driven shaft secured in the sleeve at the opposite side of the cylinder, the bore of said shaft communicating with a steam` passage leading to a port in the cylinder, and a valve for controlling an opening communicating with the bore of the shaft, substantially as specified.

4.. The combination with a driven shaft, of

IOC

IIO

a concentric revoluble cylinder, a core arranged eccentrically Within the cylinder, a wing connecting said cylinder and core, a steam-chamber and an exhaust-port arranged respectively upon opposite sides of and contiguous to the plane of said wing, a steaminlet pipe connected to and co-axial with the cylinder and having a lateral port, and a nonrotatablecontrolling valve encircling and slidably mounted upon said inlet-pipe and having a spiral face to vary the intervals of the admission and cut-o of the steam, substantially as specified.

5. The combination of a rotary cylinder, an eccentric contained core, a wing connecting said core and cylinder, a steam-chamber and exhaust-port arranged respectively upon opposite sides of the plane of'said wing, a bored driven shaft forming a steam-inlet pipe arranged concentric with the cylinder and comzo municating' by a radial channel with said steam-chamber in the cylinder, a steamchest concentric with said driven shaft, an inlet port formed in the side of the driven shaft and communicating with its bore, a non-roz 5 tatable controlling valve slidably mounted on the driven shaft within the steam-chest, and means for operating s'aid valve, substantially as specified.

In testimony that I claim the foregoing as 3o my own I have hereto affixed my signature in the presence of two witnesses.

` HENRY STAUB.

Witnesses:

JOHN LINDER, JOHN BENDER.