US1191011A - Water-motor. - Google Patents

Description

L. C. LEWIS.

WATER MOTOR.

APPLICATION FILED MAY 2, 1914.

Patented July 11, 1916.

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L. C. LEWIS.

WATER MOTOR.

APPLICATION FILED MAY 2, 1914.

1 ,1 9 1 ,0 1 1 Patented July 11, 1916.-

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LEWIS oHARLEsLEWIs, or COLUMBUS, oriro, assreivon T0, LLEWEIiLYN LEWIS, or

V coLUM Us, OHIO. g r V A'J Ert-MOTOR.

' Specification of Letter s'Pateiitf I Pate t d 13 111 1 916 Application filed May 2, 1914.- Serial No. 835,915.

T c all whom it may concern:

Be it known that I, LEWIS C. LEWIS, av

citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a new and useful VVater-Motor, of which a specification.

This invention has reference to improve-v ments in water motors of that type including a mechanically-actuated valve connected with the movable element of the motor, and a fluid-actuated valve cooperating with the first valve to controlthe admission and exhaust of the motive fluid.

The object of the invention is to improve and simplify the construction and operation of the valve mechanism of a motorof such".

type so that such mechanism may be inexpensive to manufacture and reliable and efficient in use and few parts.

In accordance with the present'inventionthere is provided a cylinder with a powerpiston therein, and at one end of the cylinder are ducts and valves, one valve moving" axially with reference to the other, and the two valves operatingto control the flow'of motive fluid and exhaust fluid, all the parts with the exception of'the inlet and outlet members being of relatively small compass and of compact construction. The arrangement is such that the directing of the motive fluid to opposite sides of the power piston is controlled by a valve in turn actuated solely by the motive fluid, while in conjunction with such valve therev is provided another valve having its part in the control of the direction of flow of the motive fluid, and

the second named valve isunder the control of the piston and timed in operation to be moved by the piston as the latter approaches its limit of reciprocatory travel.

The invention will be best understood from a consideration of the following detailed description, taken in connection with.

the accompanying drawings forming a part of thisspecification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention.

the following is have but comparativelyv provided'an axially located valve cylinder4,

f TATES IP T NT FF In the drawings: Figure 1 is a longitudi naldiametric section of the improved'motor, some parts being shown in elevation, and the piston approaching one limit of its travel. Fig. 2 is a longitudinal diametric section with some parts which are shown in section inFig. .1 illustrated in elevation and" with the piston and one of the valves at the other limit of travel from that shown in Fig. 1. Fig. 3 is a section on the line 3-3 of Fig.2. Fig. 4 is'asectionon the line- 44 of Fig. 2'. Fig. 5 is a' section on the line of Fig. 2; Fig. 6 is a section on the line 66 of Fig. 1. Fig. 7 is a section on the line 77 of Fig. 1, some distant parts being omitted; r

Referring to the drawingsthere is shown a cylinder 1, to one end of which there is applied an axiallyelongated head orvalve casing 2. Within the valve casing 2 there is 7 is an annular port8 communicating at one side .with an outlet duct 9 terminating in a nipple portion 10 for connection to a pipe or other means "for disposal of the exhaust of the :motor;

Partially surrounding that end of the fluid being usually water, and for con venience of description will be considered as water. The cylinder 4 also communicates with the chamber 14 through another port: 17 onthe side of the port 6 toward the cylinder 1. At that end of the valve casing. enter, ing the cylinder 1 the chamber 5 is annular,

a cap 18 inclosing an annular chamber 19 surrounding an axially extended chamber 20 which is separated from the chamber 19 by a cylindrical wall 21. The cap 18 is pro? videdwith an annular port 22 in line with the chamber 5, and Opening into the chamber 19 so thatthe chamber 5 and the chamber 19 are constantly in communication. The cap 18 has an interiorly threaded end 23 by means of which it is screwed onto the end of the valve casing. entering the cylinder. 1. The cylindrical wall 21 inclosing the chamber 20 is axially extended toward the bore of the cylinder 4 in the form of an annular flange cut across at appropriate points, as shown at 23 for the flow of water 7 through the walls of the flange. The wall 21 is continued axially beyond the cap 18 into the cylinder 1 and is formed with an inwardly directed annular flange 24 forming a seat for a packing gas'ket25 held in place by a ring nut 26, all for a purpose to be described.

Packing 27 is introduced between the cap 18 and the corresponding end of the valve casing, and packing 28 is introduced between the corresponding end of the cylinder 1 and the valve casing where the two join. That end of the cylinder 1 remote from the valve casing 2 has a cap 29 applied thereto, which cap has an axial packing gland 30 and a packing gasket 31 is introduced between the cap 29 and the cylinder 1. Within this cylinder there is lodged a piston 32 which may be composed of two plates 33, 34 holding cup- .shaped packing rings 35 between them, and

these plates may be secured together by screws 36 or otherwise. formed on one face with a hollow boss 37 having an axial passage 38 therethrough, while the other ring 34 is formed with a hollow boss 39 having a larger axial passage 40 therethrough. The boss 37 is internally threaded for the reception of the corresponding end of a piston rod 41 having an axial bore 42 extending into it from the threaded end. This piston rod extends through the hollow boss 39 of the plate 34, and also is continued to the exterior of the cylinder 1 through the packing gland 30.

Formed on the head 18 in eccentric relation to the axis thereof is a hollow boss 43 suitably threaded for the reception of a pipe or tube 44 extending lengthwise of the cylinder 1 inside of. said cylinder, and having the end remote from the boss terminating close to the interior of the head 29, the pipe being there freely open. This pipe is extended through the piston 32 through appropriate matching passages eccentric to the longitudinal axis of the piston, and there the pipe'is surrounded'by packing rings 45' rendering the pipe exteriorly water tight Where it passes through the piston. I

The plate 33 is through the piston. At that end of the valve casing 2 remote from the cylinder 1 there is applied a'cap or head 46 having a reduced axial extension 47 constituting a prolongation of the cylinder 4, being in line therewith, and leading from the outer end of the prolongation 47 is a still further reduced axial extension 48 having the outer end 49 permanently closed. Where the extension 48 joints the prolongation 47 there is provided an annular flange 50.

Mounted to travel in the cylinder 4 is a valve 51 made up of tubular sections 52, 53 and 54. The section 52 terminates in axially extended nipples and 56, and the section 54 terminates in axial nipples 57 and 58, each section 52, 53 and 54 being headed or radially expanded at the ends. The nipple 55 is exteriorly threaded for the reception of a ring nut 59 holding a packing ring 60 to the corresponding head of'the section 52. The section 54 has its nipple 58 exteriorly threaded for the reception of a ring nut 61 holding a packing ring 62 against the corresponding head of the valve section 54. Applied to the nipples 56 and 57, which are exteriorly screw-threaded for the purpose, is the valve section 53, which latter is interiorly threaded to engage'the nipples 56 and 57, and confines packing rings 63, 63 to the corresponding ends of the valve sections 52 and 54. Each nipple 55, 56, 57 and 58 is in teriorly threaded for the reception of a ringnut 64 holding a packing gasket 65 in place. Extending through the valve 51 is a tubular valve member 66 considerably longer than the valve 51. This tubular member has one end 67 closed, and at an intermediate point is provided with a solid web 68, thus dividing the tube into two chambers 69 and 7 O, the latter having one end freely open. That end of the tubular valve member 66 remote "from the chamber 7 O is provided with a stem prolongation 71 ofless diameter than the tubular valve, and of a size to pass snugly, yet freely, through the passage 38 in the boss 37, so as to enter the bore 42 in the corresponding end of the piston rod 41. That end of the stem 71 entering the piston rod is threaded, and has a nut 72' applied thereto, so that the piston rod is connected to the stem 71, and by it to the valve 66, but in a manner to provide for considerable movements of the piston without alfecting the valve 66, so that the connection is of the lost motion type.

The valve 66 extends axially through the valve 51 with the packing rings or gaskets 65 snugly hugging it, but not sufficiently to prevent longitudinal movement of the valve 66 in the valve 51. The section 52 of the valve 51"has a sufficiently large internal di-' ameter to provide a chamber 73 within it, about the valve 66. The section 53 provides a similar interior chamber 74- and thevalve section 54 also incloses a chamber 7 5 about the valve'66, Thevalve section 52-hasjports' its walls near the closed end 67 other ports 80 through its walls near the web 68,*and both sets of ports 79 and 80 open into the chamber 69, while on the other side of the web 68 the valve 66 has ports 81 opening through its walls into the chamber 70. Between the cap 46 and the corresponding end of the valve casing 2packing 82 is provided, so that the various chambers, the ends of which are closed by the cap 46, do not intercommunicate. x I

In the position of the parts shown in Fig. 1, it is assumed that the piston has been moving on the power stroke toward the right until the inner wall of the boss 37 has engaged the nut 72, so that a'continuance of such power stroke will cause a corresponding movement of the valve 66. During this power stroke water has-been flowing through the conduit 15 into the chamber 14, and by way of the port 13 into the valve cylinder 4, finding its way through'the port 12 into the chamber 11 in the valve casing,which chamber is in constant communication with the cylinder 1 through an extension 11 Water under pressure also finds its way from the interior of the valve cylinder 4 after entering the same through the port 12, through the ports 7 6 into the chamber 7 3, and from the latter by the ports 81 into the chamber. 70, escaping through the open end of the valve 66'into the interior of the extension 48, and from the latter into theinterior of the prolongation 47, and bearing against the corresponding end of the valve 51, maintaining this valve in the right hand position shown in Fig. 1. While the piston is moving toward the right water from in front of it escapes through the pipe 44 into the boss 43, hence into the chamber 5, through the port 6 into the cylinder 4, about the valve section53,-and by way of the port 8 of the outlet 9. a

As the piston 32 continues its stroke toward the right the valve 66 is carried with it until the ports 81 open into the chamber 74 and the ports 80 open into the chamber 75. When this occurs the interior of the prolongation 47 and extension 48 are put into communication with the exhaust side of the motor byway of the chamber 70, ports 81 and chamber 7 4 which is in communication with the exhaust through the ports 77. Now, pressure through the'chamber 14 by W-ay of the port 17 is exerted upon the va-lve section 54 and the water finds its way through theiports 8, through the chamber 75,-'and by way of the ports 80 into' the chamber 69, andby'way of the ports 79- into the chamber 20, sot-hat the w'ater pressure is exerted upon the right hand end of the valve'5l, the water pressure "being other-i w se balanced 1 upon this valve, wherefore the valve l's'forced toward-the left as far as it can-travehas shown in Fig.2. Now, the water under pressure finds its wayfrom the chamber '14 through'the portlZ into the'cylinder' 4 about the valve section 54, and by way -'of. the port 6 into the chamber 5,-Which constant communication with the" chamber 19, wherefore water under pressure finds its way by the pipe 44 to the right 1s in hand end of the cylinder 1 and the pressure is exerted on the corresponding face of the piston 32, causing the latter to travel toward the left; Water from the left hand end of the cylinder 1 now finds escape by way of the chamber 11 through the port 12 to that part of the cylinder 4 with which the valve section 53 is then coincident, and the water' flows into the space surrounding the valve section 53 and outthrough the port 8 into the outlet 9. This continues until the piston has traveled nearly to the limit of its left hand stroke as viewed'lin Fig. 1, when the boss 37 engages the end 67 of the valve 66, then projecting beyond the boss or extension 24 and forces the valve 66 toward its first" position, which position is shown in Fig. 1,1 whereupon 'the direction of flow of water under pressure as exerted upon the'valve 51 is reversed, and the valve 51 is returned to the position'shown in Fig. 1 so that the piston 32 isagain forced toward the right. The operation is entirely automatic and continues indefinitely so -long as water under suitable pressureis supplied.

If itbe desired to dismantle the structure for inspection or repairs, it is merely necesw sary to remove the'cap or head 29, unscrew the P18130111 rod, and remove the nut 72, and

then by unscrewing the cap 46 both valves are freely accessible for the removal of that is claimed is 5 1. In an apparatus of theclass described, a cylinder, a recipr'ocatorypiston therein, a valve casing at one end of and alined with the cylinder, a reciprocatory valve responeithe-r-the valve 66, or'bothvalves 66 and 51.

sive to'fluid pressure, and mounted in the valve casing concentric therewith, another reciprocatory valve in and concentric with the first-named valveand connected to the piston foractu'ation thereby, said valves and valve-casing having ports for the fiowand control of'motive fluid, and a pipe Within the cylinderextending through the piston with one end of the'pipe communicating" with the valve casing and the other end opening into the cylinder on the side of the connected with the cylinder, conduits com municating with the valve casing and the V opposite ends of the cylinder, the conduit connecting the casing to the end of the cylinder remote therefrom being located within the'cylinder, inlet and outlet chambers for the casing, a fluid-actuated valve mounted for reciprocation in the casing controlling the flow of fluid through said conduits to reciprocate the piston, a mechanically-actuated valve axially located with respect to the fluid-actuated valve for admitting fluid to opposite ends of the casing to operate the fluid-actuated valve, and a lost-motion connection between the piston and the mechanically-actuated valve, the conduit for directing fluid to the end of the piston remote from the valve casing extending through said piston.

3. In a fluid motor, a motor cylinder, a piston therein, a valve'casing at one end of and connected with the cylinder and in turn inclosing a cylinder of even internal diameter throughout, a removable closure for the end of the valve casing and secondnamed cylinder remote from the motor cylinder and containing a cylinder forming a continuation of the second-named cylinder and together with the latter constituting a valve cylinder of even internal diameter throughout, a mechanically actuated valve of even diameter throughout extending centrally through the valve cylinder and provided at one end with a connection to the piston, and a fluid actuated valve located and reciprocable wholly within the valve cylinder and surrounding the first-named valve, said second-named valve comprising spaced end'members and a central member connecting them, spaced packing means carried by the end members exterior thereto and in position to engage the inner wall of the valve cylinder, and other packing means also carried by each end member at each end thereof interior to the second-named valve and in position to engage the outer wall of the first-named valve, said firstnamed packing means coacting with the corresponding valve members of the fluid actuated valve and With the valvecylinder to define chambers, and said second-named packing means coacting with the valve members of the fluid actuated valve and the firstnamed valve to define chambers.

4. A fluid motor having a motor cylinder, a piston therein and a valve casing at one end inclosing a valve cylinder, a longitudinally extended valve of even diameter throughout located in the valve cylinder with the latter also of even internal diampiston, anda second named valve within the valve cylinder surrounding and movable along the first-named valve and comprising end members each interiorly and exteriorly threaded and shouldered at both ends, and

a central member interiorly threaded at both ends and coacting with the exterior shoulders at the corresponding inner ends of the other members to unite the latter and confine packing against the shoulders, nuts for the outer threaded ends of the firstnamed members coacting with theshoulders thereat for confining packing thereagainst, and means for confining other packing within both end portions of each end member in engagement with the first-named valve, whereby there are formed as many cha1nbers between thefiuid actuated valve and the valve casing and also between the two valves as there are members of the fluid actuated valve.

5. A fluid motor having a motor cylinder with a removable head at one end and a piston within the cylinder provided with a piston rod connected thereto for removal therefromwithout dismantling the piston, said fluid motor being also provided with a valve casing at'the end of the cylinder remote from the removable head and containing a valve cylinder of even diameter throughout and having a removable closure at the end remote from the motor cylinder,

a mechanically-actuated valve of even di- To ameter throughout extending through the valve 7 cylinder and having a mechanical connection to the piston for removal therefrom on the removal of the piston rod from the piston, and a second valve surrounding it the first-named valve and located and working wholly within the valvecylinder, whereby either or both valves are bodily removable from and introducible into the valve cylinder through that end thereof provided J with the removable closure.

6. In a fluid motor, a motor cylinder having a removable head at one end, a piston in the cylinder, a piston rod connected to the piston for attachment to and removal there- 2 I from while the piston is in the cylinder and without dismantling the piston, a valve casingat the end of the cylinder remote from the removable head and having a valve cylinder of even diameter throughout in axial alinement with the motor cylinder, a tubular valve of even diameter throughout working in and extending through the valve cylinder and provided with a mechanical connection removably joined .to the piston and there accessible on the removal of the cylinder head and the piston rod from the piston, a

second valve surrounding the tubular valve and located Wholly within the valve cylinder and provided with exterior packing and a removable cap for that end of the rings engaging the Walls of the valve cylinder, and other interior packing rings engaging the Walls of the tubular valve,

valve casing remote from the motor cylinder, whereby either or both valves may be bodily removed from and introduced into the valve cylinder through the end of the valve casing provided With the removable cap.

7 A Water motor comprising a cylinder, a piston therein, a valve casing connected to one end of the cylinder, a head on one end of the valve casing Within the cylinder, a tubular conduit communicating With the valve casing and extending from the head thereof through the piston into juxtaposition with the other end of the cylinder, arenected With the piston, and another valve mounted in the valve cylinder and movable along the tubular valve, said valves and the valve casing having chambers and ports for the control of motive fluid. i

In testimony, that I claim the foregoing as my own, I have hereto afiixed my signav ture in the presence of tWo Witnesses.

LEWIS CHARLES LEWIS. Witnesses: v I ELIAS LEWIS,

L. LEWIS.

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

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