US265138A - Albert t - Google Patents

Description

(No Model.) 1A. T. POWELL. 2 sheetssneu 1V.

, STEAM ENGINE. Y N04- 265138- ,Patented ,Sept-r 26. 18182- fgz I N. PETERS Phnlumhngmphur. wnhngtun, D. C,

UNITED STATES PATENT OEEICE.

ALBERT T. POWELL, OE sTANEoRDvILLE, NEW YORK, AssIeNOR To POWELL sTEAM MOTOR COMPANY, (LIM1TED,) OE SAME PLAOE.

STEAM-anemia.

SPECIFICATION forin'iingI part of Letters Patent No. 265,138, dated September 26, 1882.

L. Application iledNovember 4, 18541.` (No model.)

To all whom fit may concern Be it known that I, ALBERT T. POWELL, of Stanfordville, in the county of Dutchess and State of New York, have invented certain new and useful Improvements in Steam-Engines, ot' which the following is a specification.

My invention relates more particularly to small engines which are adapted for use in grocery-stores for driving coffee-mills and like purposes, in dairies for working churns, and in many other situations where only a small power is required.

The object of my invention is to provide a simple and inexpensive engine which is adapted for giving rotary motion to any desired Inachine by a belt from its crank-shaft, and which is adapted for giving a reciprocating motion directly to a churn-flasher or to any machine requiring such motion.

The invention consists in the combination, with a steam-boiler, ot a feed-water heater and a feed-pump erected thereon, a standard also erected thereon, a beam or lever fulcruined in said standard, a steam cylinder or cylinders erected on the boiler, and a single-acting piston or pistons for operating the beam or lever, a crank-shaft, and a connecting rod or rods for operating said shaft from the beam or lever, whereby I produce avery simple and compact single or double cylinder engine, in which no stuffing-boxes are necessary, and which are cheaply made. preferably arranged at a. distance from the standard in which the 'beam is fulcrumed, and the rod or rods for operating the crankshaft are connected to the beam between said cylin`- der or cylinders andthe standard. y1 also combine with the beam or lever a detachable arm or extensioupiece,which may be attached to the beam or lever when it is desired to impart or direct reciprocating motion by a rod from the beam or lever to a churn-dasher, and which may be removed when the power of the engine is to be transmitted through a belt trom the crank-shaft.

The invention also consists in the combinatioI1,-with the cylinder and piston, of a spring for cushioning the pistonat the end of its upward stroke, arranged as hereinafterparticularly described.

The c linder or c 'lindcrs are In the accompanyingdrawings, Figure l represents an elevation ofthe top port-ion ofa boiler and a side View and partial section of a singlecylinder engine erected` thereon. Fig. 2 represents an end view of a portion ot' the engine, showing the cylinder, the pum p, and their con` nections, the valve-operating mechanism, and a portion ot the feed-water heater. Fig. 3 represents a vertical section on the dotted line a: m, Fig. 1, looking toward the crank-shaft.

Fig. 4 represents a side view ot' the lower portion of the cylinder, showing the valve-seat. Fig. 5 represents a'face View of the valve. Fig. o represents an elevation of the upper part ot' a boiler and a partially-sectional elevation vofV a double-cylinder engineerected thereon; and Fig. 7 represents a vertical section on the dot-` ted line y y, Fig. 6, looking in the direction indicated by the arrows.

Similar letters of reference designate corresponding parts in all the tigures;

Y Referring first to Figs. l to 5, inclusive, A designates the upper portion of a steam-boiler, which may be ot' any ordinary or suitable construction, as it in itself forms no part of the invention. l

B designates the sniokelpipe leading from the boiler, and B designates a feed Water heater which surrounds the smokepipe, and is adapted to contain a sutiicient supply of water for feeding the boiler a considerable time.

C designates a steam-cylinder, erected on the boiler, and D designates astandard, also erected on'the boiler. This standard, together with a brace or beam, D', extending from it to the cylinder, forms the trame-work of the engine.

E designates a beam 'or lever, which is ful crumed at one end to the standard D. This beam or lever may .be of metal or it may be made ot' wood, as here represented, and have at the fulcrum end a bracket, E', bolted to it and receiving the t'ulcrum-pin.

C designates the piston, which is itted to the cylinders C, and may be of any suitable construction and provided with any desirable paekin g. The cylinder C receives steam only at the lower end below the piston, and the top ofthe cylinder is open.

C2 designates the piston-rod, which is jointed or hinged to the piston at the lower `end by a Ioo e I scales pin, a, and is connected in a similar manner at the upper end to a strap or connection, a', which may consist of a casting embracing the beam or lever E, and bolted thereto. This arrangement dispenses with any stuffing-box and with a cross-head and slides, which are necessary where a rigid piston is used. In order to cushion the piston C' on its upstroke I employ a spring, b', surrounding the piston-rod C2, and arranged between an adjustable colla-r, c, on the rod and a xed cross-piece or abutment, c', supported by uprights c2 on the cylinder.

F designates a pump, arranged by the side of and parallel with the cylinder C2, and F' designates its piston-rod, which is connected at the upper end to and is operated by an arm, F2, projecting from the beam E.

The hot feed-water is discharged by a cock or faucet, d, from the heater B', and is delivered into a funnel, d', from which a suctionpipe leads to the pump F, and by the pump the water is delivered through a dischargepipe, d?, into the boiler. This system ot' feeding is adapted for feeding a very small quantity of Water at each stroke into the boiler,

,where it will be instantly converted or iiashed into steam. The steam-cylinder is supplied with steam from the boiler through a supplypipe, e, in which is arranged a safety-valve, c', and the steam is exhausted from the cylinder through an exhaust-pipe, e?.

On the exterior ofthe cylinder C, near the lower end, as seen best lin Figs. 2 and 4, is a tlat valve-seat, G3, in which are three ports,

The portf leads directly to the cylinder, the poi-tf' leads from the supply-pipe e, and the port]2 leads tothe exhaust-pipe c2.

Q4 designates a valve, which is pivoted to the seat (13 by a bolt passing through a hole, f3, in the valve and entering a hole, f4, in the seat. This valve is exposed-that is, it is not covered by or contained within a steam-chest-f and by dispensing with a steam-chest the cost of the engine is reduced. In the faceof the valve C4 are two cavities or co\f'es,j'5f", of arc shape, and by oscillating the valve the portj" is first brought into communication with the portj'by the cavityfi covering both said ports, to allow steam to enter the cylinder, and the port]02 is afterward. brought into communication with the portj' by the cavityj'G covering both ports to allow steam to exhaust from the cylinder. The exposed oscillating valve is not in .itself new. The valve C4 has upon its face two lugs,f7, which limit the extent of its oscillation in both directions, and on its back is a lug or ear, j, through which works a valverod, ft, connected at its upper end to the beam or lever E. The rod fJ works looselyin the lngor ear f8, and is provided above and below the said lug or ear with adjustable collars f1@ and spiral springsfu, as clearly seen in Figs.

l and 2. The valve C4 is oscillated. in either direction until the lugs f7 strike the sides of the valve-seat, and then the springs fu yield, while the valve-rod j"9 moves still farther, thus insuring the valve always making a full nioveinent and cushioning the rod in its action on the valve.

Gr designates a crank-shaft mounted in suit able bearings on the cross-beam D', and provided with a crank, G', which is operated by a connecting-rod, G2, connected to a strap or socket, G3, secured on the beam E. Upon the crank-shaft G is a iiy-wheel, G4, and a pulley, G5, from which power lnay be transmitted by a belt, G6. As the cylinder C and piston C' are single-acting, the crank-shaft has no power transmitted to it on the downstroke. To assist the weight of the beam and connections in the downward stroke and impart a more uniform motion to the crank, Iemploy a lever, H, fulcrumed atg to the standard D, and connected by a rod, g', to a crank-pin, g2, in the pulley G5, as seen in Fig. 3. To the lever H are connected one or more springs, g3, (two being here shown,) which are extended whenthe engine makes its upstroke, and serve in contracting to assist the downstroke. In lieu ot' the lever Handits connections,asinglespring,H,might be applied between the beam E and standard D, as shown dotted in Fig. 1, for the same purv Where it is desired to impart a reciprocating motion directly to any machine-as to a churndasher--I emplpy an arm or extension-piece, E2, which is detachably secured to the end of the beam E, so that when not wanted for use it may be removed. To the outer end ot' the arm or extension-piece the churn-dasher or other moving part may be connected.

I will now describe the doublecylinder engine shown in Figs. 6 and 7.

A designates the upper part of the boiler; B, the smoke-pipe, and B' the feed-Water heater. In this engine the beam or leverE is fulcrumed at or about the middle ot' its length to the standard D, and the beam might have an extension-piece or arm, E2, applied to either end of it, as shown in dotted'outline in Fig. 6, or to both ends ot' it, t'or the purpose previously described. Two cylinders, O, are arranged at opposite ends of the beam E, and their pistons C' are connected with the beam by rods C2, as previously described. The valves G4 are of the kind previously described, except that each valve has an arm, h, extending from it, through which the valve-rodsj"9 work, and is weighted at h' on the opposite side to balance said arm.

The arrangement of the valve-rods f 9, their collars f1, and springs j is the same as in the single-cylinder engine. The pump F is arranged as Abefore described, and its rod F' is operated through an arm, F2, projecting from the beam E, but in this instance the pump takes its suction through a pipe, t', from any suitable source of supply, and the water is discharged from the pump into the heater B' through a pipe, t', and escapes from the heater Y to the boiler through a pipe, i?. The crankshaft G is arranged parallel with and under the beam, and has two disk-cranks, G', which serve IOO IIO

IIS

IZO

as driving-wheels. The cranks are operated by rods G2I from the beam E. In this example ot' my invention no springs are necessary for cushioning the pistons or for assisting the downward stroke of the pistons, as steam is always acting uponV one or the other of the pistons whenthc engine is in operation.

The arrangement of the crank-shaft relatively to the beam shownin Figs. 6 and 7 and other features of construction are not claimed in this application, and may be made the subject of a future application for a patent.

By myinvention I produce an engine of simple construction, which 'may be sold at a low price, and which will serve admirably for many purposes Where small power only is required.

What I claim as my invention, and desire to secure by Letters Patent, is- A `1. The combination, with a steam-boiler, of a feed-water heater and a feed-pump erected thereon, a standard also erected thereon, a beam or lever fulcrumed in said standard, a cylinder or cylinders also erected on the boiler, and having a piston or pistons connected with said beam or lever, and a crank-shaft, and a connecting rod or rods for operating the shaft from said beam or lever, substantially as specilied.

2. The combination, with a standard and abeam or lever fulcrumed therein, of a cylinder and piston and a crank-shaft, a rod connecting the piston with the beam or lever near its free end, and a connecting-rod for operating said crank-shaft, connected to the beam or lever between the cylinder andthe standard, substantially as specified.

3. The combination, with a beam or lever, a cylinder and piston for operating the same, and a crank-shaft operated by said beam or lever7 of a detachable arm or extension-piece fitted to the end of said beam or lever, substantially as specitied.

4. The combination of the beam or lever E, the crank G', the connecting-rod G2, the crankpin g2, the lever H, and rod g', and one or more springs, g3, substantially as specified.

5. rlhe combination, with acylinder, U, and its piston G and piston-rod G2., ot the collar c on said rod, the cross-piece or abutment c', and

a spring, b', surrounding the rod and arranged between said collar and cross-piece or abutment, substantially as specilied.

ALBERT T. POWELL. Witnesses:

' EDWARD H. THOMPSON,

EDGAR KNAPP.

Images