US881048A - Steam-engine. - Google Patents

Description

PATENTBD MAR. 3, 1908.

W. H. BBTTS. STEAM ENGINE.

APPLICATION FILED JUNE 4.1907.

I aktozmu narran STATES,

WALTER H. BET'IS, OF ADMIRE, KANSAS.

STE .AM-ENGINE Specification of Letters Patent.

Patented March 3, 190s.

Application led June 4, 1907. Serial No. 377,215. l

To @ZZ whom it may concern:

Bc it known that I, WALTER ll. Bn'r'rs, a

citizen of the United States, residing at Admire, in the county of Lyon and State of lansas, have invented neuy and useful linprovemcnts in Steam-Engines, of which the 'following is a specification.

rlhis inventimi relates to a double-acting engine of that type in which the admission and exhaust of the motive. fluid to and from the cylinder are controlled by the movement of the piston, whereby the more or less complicated valve mechanism commonly employed is dispensed With.

The invention has for one of its objects to improve and simplify the construction and operation of engines of this character so to be comparatively easy and inexpensive to manufacture, thoroughly reliable and eilicient in use, and readily.controlled.

A further object of the invention is the provision of an engine Within the cylinder of which is a hollow cylindrical member that rcceives the piston and is actuated at the end of each stroke of the latter for opening an inlet port on one side of the piston and simultaneously. opening the exhaust port on the opposite side, so that the admission and exhaust of steam can be controlled automat- `ieally to effect the continuous operation4 of the engine.

A still further object is the employment of a reversing mechanism whereby the inner reciprocating cylinder can be adjusted to reverse the engine.

W'ith these objects in view and others, as will appear asthe description proceeds, the invention comprises the various novel features of construction and arrangement: of parts which will be morelfully described-hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustrates one of theembodiments of the invention, Figure 1 is a longitudinal vertical section of a single cylinder, double-acting engine. Figf2 isl a longitudinal section of the inner c linder or valve of the engine.

Eindigt-r reference characters are employed to designate corresponding parts throughout the several views.

Referring to thedrawmg, 1 designates the.

bed of the engine; 2, the cylinder mounted at one end thereof and in which is a piston 3 that imparts rotation to the crank shaft 4,

. through the piston rod 5,v cross-head 6, and

connecting rod 7, the cross-head being arranged to reciprocate in a guide 8 on the bed l. These parts of the engine may be of any approved design as far as the present invention is concerned. v

0n the cylinder 2 is a steam chest=9 that is suppliedwith live steam by the pipe 10 that is provided with a controlling valve 11, and between the steam chest and cylinder 2 from the heads of the cylinder to provide for the necessary compression at the ends of the strokes of the pistonv 3. 'Arranged at the suitable point are exhaust ports 13 to which are connected a branch exhaust pipev 14. The inlet and exhaust ports of the cylinder 15 that constitutes a single valve for all the ports. The inner cylinder has a Working fit in the main cylinder and is adapted to move back and forth therein and the piston 3 reciprocates Within the inner `cylii'ider Which is carefully finished .to 'insure a Working it with the piston. The hollovsT cylindrical valve 15 is provided with inlet ports 16, so arranged that one or theother can be brought into register with one of the inlet ports 12, so that steam can be admitted to one side of the piston while it is cut off from the other side. The member 15 is also provided With exhaust ports 17 arranged to register one at a time with the stationary exhaust ports 13 and the relation of the variousports is such that -while ysteam isladmitted to one side of the piston, it exhausts from the other side.

1,5 are annular grooves for receiving packing lrings 18 vfor reventing. leakage. Adjacent the ends of t 1e valve 15 are internal stops, pro'ections or abut-ments 19 disposed in the pat of the pistons 3, so that as the latter n ears the end of 4its stroke in either direction, it will engage oneL of the abutments 19 and impart longitudinal movement to the valve for simultaneouslycuttingioff steam from \of the piston.

moved backend forth directly by the piston to control the admission and exhaust for effecting the continuous reciprocation of the; piston.

ment of the engine, provision is made to this purpose, the latter is provided With a are inlet ports 12 spaced slightly inwardlyopposite side of the cylinder or at any other' 2 are opened and closed by an inner cylinder' In the outer surface of the cylindrical valve shift the position of the valve 15, and for' one side and admitting it to the other side In this manner, the valve is In order to reverse the direction of movei 30 f vvalve-chest.

lor stops 24 for engaging with t central arm or post having a threaded arm 20 passes through an opening 21 in the Wall of the cylinder 2 and projects into the valve chest 9. 4The arm has an opening 22 for receiving the inner end of an 'actuating rod 23 that is provided with adlustable'nuts shift the valve 15 in one direction or the other. The rod 23 extends throu h the wall of the steam chest and is hin ed y connected with an operatin lever 25 ulcrumed on a bracket 26 carriedgby the rear head of the cylinder. The lever is provided with a latch 27 enga g a toothed section 28 on lthe bracket, v'W ereby the lever can be held in adjusted position. Normally the valve orinner1c` 1inder 15 moves back and forth between't enuts 24 without interference,

' and by operating the lever 25, the valve 15,

` can be shifted 'of travel.l

;in Fig. 1, 'it 1s merely necessary themethod of operation will be readily apl When it is desired to reverse the engine and thepiston is moving to the left as shown to throwthe lever'y 25 to such a position as to cause theleft hand inlet port of th'e cylindrical valve 1 5 to register with ,the left-hand port of the This will admit steam to the left side of the iston and cut oil' the supply to the right 'si e and thereby cause the engine to reverse. As soon as the piston starts onlits reverse stroke, the lever is ladjusted and locked in such a position as to permit the ,valve 15'to be actuated by the piston, as p before, whereby theengine will continue to operate in a reverse direction.' i y l From the fore oing description, taken in yconnection with t eaccornpanying drawing, the ,advantages of the construction and of e post 20 to 4 so aste reverse the direction v arent to those skilled 1n tne art to which thc 1nvent1on appertarns; and while l` have described the principle of operation of the in-- vention, together 1th the apparatus which l now consider to be the best embodiment thereof, l desireto haye it understood that the apparatus shown 1s v merely illustrative and that such changes may be madewhcn desired as are n ithin the scope of the claims.

Having thus described the invention, what|- l claim ist' l 1. ln an engineLthe combination of a cylinder having inlet andexhaust ports, a cylinderthereinI havingv inlet and exhaust portsv and movable longitudinally to alternate/ly bring corresponding ports into register, a piston reciprocating in th'e inner cylinder and adapted to close the ports at the ends of the strokes, means on the inner cylin-4 denier engaging the piston to receive motion thereform, and a manual means for adjusting the inner cylinder to reverse the engine.

2. In an engine, the combination of a stationary outer cylinder having inlet and me.

vhaust ports, an inner cylinder mounted for reciprocation and having register with those of the outer cylinder, a piston reciprocating Within the inner cylinder and adapted lto impart motion thereto at the end of each stroke, a removable member ion the inner cylinder .and extending into the Ysteam chest, an actuating red, an adjustable lost motion connection between the member and rodv and located Within the chest, and a manually actuated means connected with the rod for reversing the engine.

ln`testirnony whereof', I atix my signature in presence 'of two Witnesses.

WALTER H.4 Barre.

ports'adapted to

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