US722722A - Steam or other fluid pressure motor. - Google Patents

Description

No. 722,722. Y 7 PATBNTED lMAR. 17,1903..

P. LAMPLOUGH.

STEAM OR OTHER FLUID PRESSURE MOTR.

APPLICATION FILED DB0. 14. 1001. No MODEL. v a SHEETS-SHEET 1 VV/TNESSES /A/l/,f/v TUR I @CAM/W. fha-DEREK.' A/VPL 006W.'

W A Y 5y H/S A TTURA/Er No. '722,722- v PATENTED MAR. 1'7, 1903.

FI LAMPLOUGH.

STEAM OR OTHER FLUID PRESSURE MOTOR.

APPLICATION FILED Imc. 14, 1901.

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NO MODEL.

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- No. 722,722. PATRNTRD MAR. 17, 1903.

D. LAMPLOUGH.

' ASTRAMOR OTRRR FLUID PRESSURE MOTOR.

Y APPDOATION FILED DEO. 14, 41901. no MODEL. f

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FREDERICK LAMPLOUGH, OF WILLESDEN, LONDON, ENGLAND.

STEAM OR OTHER FLUID PRESSURE MOTOR.

SPECIFICATION formingpart of Letters Patent N o. 722,722, dated March 17, 1903. Application filed December 14, 1901. Serial No. 85,865. (No model.)

To a/ZZ whom it may concern.-

Be it known that LFREDERICK LAMPLOUGH, engineer, a subject of the King of Great Britain, residing at 6 Scrubbs Lane, Cumberland Park, Willesden, in the county of London, England, have invented certain new and useful Improvements in Steam or other Fluid Pressure Motors, of which the following is a specification. Y

This invention relates to steam and other iiuid pressure motors, and has for its chief object to so construct the same that they shall be light, compact, simple in construction, and very suitable for the propulsion of road-vehicles, steam-launches, and the like.

An important feature of the invention is the valve-gear, which is constructed on the well-known Joy principle, but modified in such manner that the oscillatory parts participate only in a small arc of movement, so as to permit of the gear being located or in-v closed within a comparatively small chamber wherein the crank works.

Another important feature is a device for operating the actuating-shaft of the valvegear through the intervention of a screw which can be disengaged when large adjustments of said shaft are to be eected.

Another important feature is that the motor is unprovided with the usual stuffing-boxes for the working parts, the only stuffing-boxes being those in which are mounted the inner ends of tubes and which serve as expansionjoints therefor, as hereinafter described.

In the accompanying drawings, Figure l is a longitudinal section of the motor for Vuse with steam as the motive iiuid. Fig. 2 is a horizontal section, and Fig. 3 an end view, of the same. Fig. 4 is a plan of the crank-chamber. Fig. 5 is a longitudinal section similar to Fig. l, showing the parts in another position. Fig. 6 is an edge View, and Fig. 7 a face view, of the device foradjusting the position of the valve-gear.

A A are the working cylinders, of which there are two `in the example illustrated, arranged in alinement with each other and preferably composed of steel tubes connected with the central or body portion B, that constitutes the aforesaid crank-chamber. The said body portion B comprises a rectangular casing having internally-screW-threaded bosses BX B to -screw into said bosses.

receive the aforesaid cylinders A, which are correspondingly screw-threaded at A A to The body portion B is open at the top and sides to facilitate the assembling of the parts it is destined to inclose, coverplates B B2 B2 being provided for closing the said openings. This portion B and its covers are preferably made of aluminium forsake of lightness.

c c are the valves for controlling the inlet and outlet of the steam to and from the working cylinders through the passages aa. These valves are of the piston type and work in stationary tubes a' c', which are mounted at theirl outer ends in steam-chests C C, having cavities c c2, the former of which communicates with the exhaust-opening a2 and the latter of which communicates with the aforesaid passages ce a. Theinner ends of said tubes are mounted in stuffing-boxes a3 a2, with which the body portion B is provided. Instead of these stufling-boxes(which serve as expansionjoints) I may provide the said tubes with flanges and connect them to the body portion .B by means of screws or otherwise. Each of the tubes is formed with ports a4 a5, the former of which communicate with the cavities c2 in the steam-chests leading to the passages a and the latter of which communicate with the cavities c in the steam-chests leading to the exhaust-opening a2. f

A A arethe cylinder-end covers, which are preferably made of aluminium and secured in any appropriate manner to annular flanges A2 A2, also preferably of aluminium,

screwed onto the outer ends of said cylinders.

The steam-chests AC O are also preferably made of aluminium and connected with the annular flanges A2 in any appropriate manner. O O are the end covers of the steam-chests, and which may also be of aluminium. The body portion B is intended to contain oil for lubricating the parts it contains, and its cover B is made capable of ready detachment for enabling access to be had to the interior when required. It will thus be .seen that all the working parts of the motor are effectually lubricated and inclosed, so that it will be impossible for dust or other foreign matter to reach said parts.

- The aforesaid piston-valves are carried by a hollow rod. c3, through which the steam en- ICO tering the left-hand chest through the pipe c4 can reach the right-hand chest. The piston-valves act as guides for the hollow valverod c3 and effectual] y prevent the motive Huid from reaching the interior of the central casing through the tubes ct' and becoming mixed with the oil within such casing. The said rod c3 is provided with an adjustable block c5, to which one end of an oscillatory lever d, having its fulcrum at D, is connected. The opposite end of this oscillatory lever is coupled by a link d to a lever d2, which is connected at its upper end d3 to another link d4, which is in turn connected with the free end of an arm d5, mounted on a shaft D. The lower end d6 of the arm d2 is connected to an arm 0F, pivotally connected at d8 with the pistonrod e of the left-hand piston E. The free end C19 of this arm 17 is connected to the end of a link d10, which is pivoted at d to the body portion B of the motor. The piston-rod e of the right-hand piston E' is connected to the left-hand piston-rod e at e2, and said righthand piston-rod c' is coupled at f to the crank F of the shaft F. I attach importance to the fact that the piston-rods overlap at their inner ends and that they are connected t0- gether independently of the crank, to which only one of them is directly coupled. This arrangement enables the total length of the motor to be considerably reduced and also facilitates the location of the valve-gear in the comparatively small space provided within the central or body portion of the motor, as aforesaid. The said shaft D is capable of angular movement by means of the aforesaid adjusting device,which is situated within easy reach of the driver or motor attendant. This device comprises a hand-lever G, fixed to the valve-gear-actuating shaft D in any appropriate manner to permit of these parts moving together. This hand-lever is provided with a sliding frame g, carrying the screw g', which by a spring g2 is normally maintained in engagement with a toothed segment H, stationarily mounted with respect to the said shaft D. The axle of the said screw g is furnished with a thumb-piece g3 for enabling it to be turned in its frame and by so doing to cause it, together with the hand-lever G and the shaft DQ to travel in one or other direction in accordance with the direction in which said screw is turned. By

this movement a fine adjustment of the valvegear can be edected. The said hand-lever G is also provided with a pivoted handle G', by which the aforesaid frame g can be shifted away from the toothed segment H, so as to bring said screw g' out of gear with said segment, and thus enable the hand-lever G to be shifted independently of the screw g when large adjustments of the shaft D are required. On releasing the hand-lever and the handle G the saidv spring g2 brings the screw g again into engagement with the segment H, so that ine adjustments can then be effected through said screw, as before stated. For the purpose of maintaining the said segment H in its stationary position it is formed with a boss h, having lugs h h thereon, which are adapted to engage with corresponding recesses in some fixed part of the motor-framing. Mounted ona sleeve h2,

surrounding said shaft D', is a collar and a nut. This collar and the boss h grip between them the aforesaid motor-framing when said nut h2 is screwed up, and thus keep the aforesaid lugs 71' in iirm engagement with their recesses and the segment stationary. By shifting the said hand-lever G into either of its extreme positions the said valve-gear can be so actuated as to alter the position of the valves and permit the steam to drive the motor in a forward or a backward direction, or by moving said handlever intointermediate positions by the screw g the valve-gear can be set to cause any desired cut-off of the steam to be eected and the motor to be driven at the requisite speed in accordance with the amount of work it has to perform.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. In a motor, the combination with a pair of coaXially-arranged working cylinders and motive-fluid-distributing valves, of a casing located between said cylinders for completely inclosing the crank and valve operating re- Versing and expansion gear and having detachable top and side plates, of screw-threaded bosses on said casing for the cylinders to be screwed into, of fianged rings screwed on the outer ends of said cylinders, of motivefiuid chests connected with said flanged rings, and of ported tubes connecting said motivefluid chests with the casing substantially as described.

2. In a motor, the combination with a pair of coaxially-arranged working cylinders and motive-iiuid-distributing valves, of a casing located between said cylinders, of screwthreaded bosses on said casing for the cylinders to be screwed into, of iianged rings on the outer ends of said cylinders, of motivefluid chests connected with said flanged rings, of ported tubes connecting said motive-fluid chests with the casing, of piston-valves working in said tubular and ported tubes, of a hollow rod carrying said piston-valves, and permitting the motive uid of one chest to reach the other, of means for connecting said rod with the valve-gear inclosed in said casing, of piston-rods hinged to the pistons of the working cylinders and of a length that their inner ends overlap, one of said rods being coupled to the crank, of means for hinging said piston-rods together independently of the crank, of means for connecting the valve-gear to one of the piston-rods, of a crank-shaft eX- tending laterally through one of the side plates of said casing, and of a shaft connected with the valve-gear and extending laterally through the opposite side plate of said ICO casing for enabling the valve-gear to be controlled from the exterior of the casing substantially as described.

3. In a motor, the combination with a pair of coaxially-arranged working cylinders and motive-fluid-distributing valves, of a casing located between and connected with said cylinders for completely inclosin g the crank and valve-gear, of piston-rods hinged to the pistons of the working cylinders and of a length that their inner ends overlap, one of said rods being coupled to the crank, of means for hinging said piston-rods together independently of the crank, of means for connecting the valve-gear to one of the piston-rods and of means for controlling said valve-gear from the exterior of the casing substantially as described.

4. The combination, in a motor having a pair of coaXially-arranged working cylinders, motive-iiuid-distributing valves and a casing located centrally between and connected with said cylinders; of hinged piston-rods overlapping at their inner ends within said casing and coupled together independently of the crank to which one of them is connected, of valve-gear, and inclosed in the aforesaid casing, of a sliding hollow rod carrying the slide-valves, of motive-fluid chests within which said valves work, of ported tubes connecting said motive-duid chests with the central casing, of means for connecting the said valve-gear with the said sliding hollow rod, and of means for actuating said gear from the exterior of the central casing substantially as described.

5. In a motor having a pair of coaxiallyarranged working cylinders, motive-iiuid-distributing valves and a casing located centrally between and connected with said cylinders; the combination of the hinged piston-rods having overlapping ends coupled together independently of the crank to which one of them is connected, of valve-gear comprising an arm mounted on a transverse shaft extending outside said central casing, a link coupling said arm to one end of alever whose opposite end is connected with an arm on one of the piston-rods, the free end of which arm is connected by a link to a fixed point, a link coupling said lever to one end of an oscillatory lever whose fulcrum is at a Xed point and whose opposite end is connected to the sliding hollow valve-rod by an adjustable block, of piston-valves mounted at the ends of said hollow valve rod, of motiveiiuid chests, and of ported tubes which connect said motive fluid chests with the central chamber and within which said piston-valves work, substantially as and for the purpose specified.

In testimony whereof I have hereunto set my hand, in presence of two subscribing witnesses, this 21st day of November, 1901.

FREDERICK LAMPLOUGI-I.

Witnesses:

THos. C. WARDLE, WALTER J. SKERTEN.

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