US1125641A - Engine. - Google Patents

Description

D. BERRY.

ENGINE.

APPLICATION FILED 001125. 1913.

WW 2 Mi 2 2 snmTS-SHEE Patented Jan. 19, 1915.

WITNESSES ATTORNEYS IHE NORRIS PE TEES 60.. PHOTOLITHOH WASHINCI'ON. L-

-D. BERRY.

ENGINE.

,APPLIGATION FILED 00125, 1913.

1,125,641. Patented Jan. 19, 1915.

2 SHEETS-SHEET 2.

INVENTOR Ba d Earn,

ATTORNEYS WITNESSES THE NORRIS PETERS 60.. PHOTO-LITHO.. WASHING rON. D. c.

' fluid takes place through the piston, which 5% PATENT pr on.

DAVID BERRY, 0F ANCHOR BAY, CALIFORNIA.

ENGINE.

Application filed October 25, 1913.

To all whom it may, concern:

Be it known that I, DAVID BERRY, a citizen of the Republic of Switzerland, and a resident of Anchor Bay, Gualala, in the county of Mendocino and State of California, have invented a new and Improved Engine, of which the following is a full, clear, and exact description.

This invention relates to engines of the reciprocatory type wherein water, steam, air or other fluid may be used as the motive medium.

The invention has for its general objects "to improve and simplify the construction and operation of engines of the character referred to so as'to be reliable and efiicient in use and so designed as to develop great power.

A further object of the invention is the provision of a double-acting engine of that type in which the exhaust of the motive has at its ends or head valves which are so arranged that one is open while the other is closed, so that the used motive fluid can exhaust through the open valve as the piston moves in one direction while the active motive fluid is operating on the other valve and piston to drive the latter.

Anadditionalobject ofthe invention is the provision of simple, effective and novel means 'for operating the slide valve that controls the admission of motive fi uid through the cylinder, there being connecting conduits between the slide valve and cylinder which are capable of being controlled for adapting the engine for use with water under pressure or with air or any other elastic fluid as the motive medium.

With such objects in view, and others as will appear as the description proceeds, the invention comprises various novel features of construction and arrangement of parts such as will be set forth with particularity in the following description and claims appended hereto.

In the accompanying drawings, which illustrate certain embodiments of the invention, and wherein similar characters of reference indicate corresponding parts in all the views, Figure 1 is a side view of the engine with portions in section for showing the slide valve operating means; Fig. 2 is a plan Specification of Letters Patent.

\ ing means.

Referring to the drawing, A designates the cylinder of the engine which is in horizontal or any other suitable disposition, and slidable therein is a piston B which is connected with the piston rod 1 that extends out through a stuffing box 2 and is connected w th a cross-head 3, such cross-head being slidable on guides 4 and united by a connecting rod 5 with a crank 6 on the shaft 7 of the engine, there being on the shaft one or more flywheels 8 from which power may be derived for driving machinery.

The piston B, as shown in Fig. 3, comprises heads 9 and 10 united by a tubular body 11. This tubular body 11 is of smaller diameter than the heads of the piston so that an annular'exhaust chamber 12 is formed by the wall of the cylinder A and by the heads and body of the piston. At the center of the cylinder is an exhaust pipe 13 which is always in communication with the chamber 12. The chamber or bore 14 of the piston extends entirely through the same from one head to the other, and at the ends of this bore or passage are valve seats 15 and 16 that are adapted to be engaged respectively by the exhaust valves 17 and 18. The valves 17 and 18 are rigidly connected together by a rod 19 the length of the rod being such that when one valve is seated the other is unseated. Each valve is provided with guide lugs 20 which are always in engagement with the bore of the piston so that the valves will be maintained in alinement with their seats. The exhaust valves are adapted to be operated as the piston B reaches the the piston continues to move. The means for shifting the valve structure when the piston moves to the right is carried by the piston rod 1. This rod is united to the head i 5 of the piston by a yoke 23, and on the piston rod is a collar 24 between which and the yoke is a helical compression spring 25 and encircling the piston rod, such collar 24 carrying an L-shaped member 26 that constitutes an abutment against which the valve 18 strikes as the piston moves to the right. During the last part of the piston stroke to the right, the collar 24 strikes the seat or abutment 27 on the head 28 of the cylinder A. The piston continues to move and causes the valve 18, which is held stationary for the time being by the member 26, to engage with the seat 16 at the end of the piston. The spring 25 is compressed during this action, but as soon as the piston'moves again 'to the left the spring 25 will expand and throw the member 26 out of engagement with the valve 18, so that the latter can open when the piston reaches the end of its stroke to the left.

The motive fluid is admitted to the cylinder A at its ends through conduits or ports 29 and 30, the supply through one conduit alternating with the supply through the other by means of a slide or other valve that controls the conduits. Then the piston is in the position shown in Fig. 3, live motive fluid is about to enter the left end of the cylinder so as to drive the piston to the right, there being in the right end of the cylinder the motive fluid which has spent its energy The valve 18 is open while the valve 17 is closed, and consequently as the piston moves to the right the exhaust fluid passes out through the open end of the piston bore, through the ports I) in the body of the piston, 12 and the exhaust pipe 13. When the piston reaches the-right end of its stroke the valve 18 will close and the valve 17 open, so that as soon as the motive fluid is admitted to the right end of the cylinder the piston will move to the left, forcing out the exhaust fluid in the left end of the cylinder by way of the left open end of the piston.

On the cylinder B is mounted a valve chest C which contains a ported valve seat 31 for the slide valve 32 which is disposed within the valve chamber 33. This valve 32 controls ports 34 and 35 that communicate respectively with the chambers 36 and 37. The chamber 36 is united by a pipe 30 that leads to the right end of the cylinder A as shown in Fig. 2, while the chamber 37 connects by the pipe or conduit 29 with the left end of the cylinder. The slide valve 32 is held against its seat by means of a springpressed plate 38 and the operating rod 39 for the slide valve extends out of the stuff- 65 ing box 40 in the wall of the chamber 33.

through the chamber- This rod is reciprocated by some moving part of the engine in timed relation to the strokes of the piston, so that the motive fluid will be admitted to or cut off from the cylinder at the proper instant. The inlet chamber 33 is connected with a source of supply through the pipe 41, there being a throttle valve 42 in the pipe for regulating the pressure or cutting off the flow of the fluid. When water or any other liquid under pressure is employed, air domes 43 may be connected with the supply pipe on the engine side of the throttle and with the conduits 29 and 30, so as to impart elasticity to the motive fluid. hen steam or elastic fluid is used for motive medium these air chambers 43 may be cut out of use by closing the valves 44.

The means for operating the slide valve comprises, as shown in Fig. 1, a sliding structure D arranged on the cross-head guide 4. This structure has an arm 45 which is adjustably connected with the slide valve rod 39. The device D has spaced abut ments 46 and 47, between which projects a lug 48 on the cross-head 3. The distance between the abutments 46 and 47 is slightly less than the full stroke of the cross-head, so that at the end of each stroke of the latter, the lug 48 will strike one abutment or the other and therebyimpart movement to the slide valve, whereby the latter opens the port 34 and closes the port 35, or vice versa. The abutments 46 and 47 are adjustable by being fastened to the device D by bolts 48 which pass through blocks that form the abutments and through slots 49 in the device D.

In Fig. 6 is shown means for lubricating the slide valve rod 39, such device comprising an oil cup or other reservoir 50 which has a discharge pipe 51 which extends into. the inlet chamber 33 in the valve chest, such discharge pipe 51 being in the shape of a spout that has its outlet ends 52 disposed in a passage 53 that leads through the stuffing box 40. When water is the motive fluid, the pipe 50 will supply this stuffing box with oil, but when steam is employed the oil feeding pipe 51 is turned to the dotted line position, Fig. 6, so that oil will drop upon the slide valve and its rod, thereby effectively lubricating the valve and stufiing box.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation together with the apparatus which I now. consider to be'the best embodiment thereof, I desire to have it understood that the apparatus" shown is merely. illustrative, and

that such changes may be made when delast part of its stroke for causing the said sired as are within the scope of the appendmember to engage the valve and shift the ed claims. same with respect to the piston.

Having thus described my invention, I 2. In an engine, the combination of a cylclaim as new and desire to secure by Letters inder, a piston having an exhaust passage, a Patent: I central valve for the exhaust passage, a yoke 1. In an engine, the combination of a cylfastened to the piston and bridging the inder, means at the ends thereof for admitvalve, a rod connected with the yoke, a memting fiuid alternately to the cylinder, a pisber slidable on the rod to form an abut- 16 ton in the cylinder having a central eX ment with which the valve engages, whereby haust passage, a reciprocatory valve mountthe valve is held stationary While the piston ed on the piston and having parts arranged moves to the end of its stroke, and a spring respectively to close the passage at one end on the piston rod and disposed between the while the opposite end of the passage is member and yoke for moving the member 1 opened, a yoke fastened to one end of the out of engagement with the valve When the piston, a rod connected with the yoke, a piston reverses its stroke. member slidable on the rod and having a In testimony whereof I have signed my valve-engaging portion disposed between name to this specification in the presence of the yoke and adjacent end of the piston, two subscribing witnesses.

20 and a helical spring carried by the rod and DAVID BERRY.

engaging the yoke and member, said mem- Witnesses: her being adapted to engage one end of the DAVID A. BERRY, cylinder while the piston moves during the J. C. HALLIDAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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