US837252A - Hydraulic motor. - Google Patents

Description

PATENTED NOV. 27, 1906.

J. H. ROSE. HYDRAULIC MOTOR.

APPLICATION FILED ULY 26, 1905.

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PATENTED NOV. 27, 1906.

J. H. ROSE.

HYDRAULIC MOTOR.

APPLICATION FILED JULY 2a, 1905.

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No. 837,252.- PATENTBD NOV. '27, 1906. J. H. ROSE.

HYDRAULIC MOTOR.

APPLICATION FILED JULY 26, 1905.

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JOHN H. ROSE, OF DAYTON, OHIO.

HYDRAULIC MOTOR- Specification of Letters Patent.

Application filed July 26,1905. Serial No. 271,276.

Patented Nov. 27, 1906.

To a whom it may concern.-

Be it known that I, JOHN H. Rosn, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Hydraulic Motors, of which the following is a specification, reference be ing had therein to the accompanying drawin s.

lhis invention relates to hydraulic motors, and has for its object to provide a simple, efficient, and inexpensive reciprocating watermotor of the single-cylinder double-acting type, the same being designed primarily for use as a small motor for domestic use and being capable of ready ap lication in various situations, owing to the act that its organization is such that its pressure and exhaust connections may be reversed.

To these and other ends my invention consists in certain novel features which will now proceed to describe and will then particularly point out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of a motor embodying my invention in one form. Fig. 2 is a sectional view of the same, taken on the line at a: of Fig. 1 and looking in the direction of the arrows. Fig. 3 is a transverse sectional view taken on the line y y of Fig. land looking in the direc- Fig. 4 is an inverted plan view of the motor with the drip-base omitted, and Fig. 5 is a view of the inner face of one of the end members of the frame, detached.

In the said drawin s the motor is shown in Fig. 1 as mounted upon the usual dripbase 1, although this base may be dispensed with. The motor proper com rises a cylinder 2, preferably in the form 0 a lain piece of cylindric tubing of brass or the ike. This cylinder is supported in a frame comprising end pieces an side iecesinthe form of castings, preferably 0 brass, which 'may be readily constructed and connected without any special fitting of the parts. The end members of the frame are indicated by the reference-numerals Stand 4, and one of them,

the end member 3, is shown in detail in Fig. 5 of the drawings. Each end member of the frame comprises a body portion havin a seat 5 for the corresponding end of the cyIinder and lateral seats 6 to receive the ends of the side members 7 and 8 of the frame. The central portion of each end member thus constitutes a cylinder-head and is provided with a central chamber 9 in free communication with the correspondin end of the cylinder, said central chamber being connected by a transverse passage 10 with openings or ports 11 in the seats or recesses 6, which receive the ends of the side members of the frame. The seat 5 is provided with a gasket or packing-washer. 12 fitting between it and the corresponding end of the cylinder 2, and the seats 6 are provided with similar gaskets or packing-washers 13, fitting between said seats and the ends of the side frame members 7 and 8.

Each of the end frame members 3 and 4 is provided with apertured lugs 14, through which pass longitudinal connecting-bolts or threaded rods 15, provided on their outer ends with nuts 16. By means of these nuts and bolts the two end frame members may be drawn toward each other, so as to firmly rip between them the cylinder and side l rame members, and thus hold the cylinder and frame rigidly and firmly together, the gaskets or packing-washers making watertight joints between the parts and doing away with the necessity of any special fitting or machining of the castings or threading of the cylinder ends. Each of the end frame members is provided with a supporting-leg 17, terminating in a slotted foot 18, by means of which the motor may be secured to the base 1 or any other suitable support through the medium of screws 19. The two end members of the frame are similar in construcrying a packing 23, and thus constituting a stuffing-box for the piston-rod. The piston is indicated at 24, and the piston-rod at 25.

Each of the side frame members is in the form of a bar having a passage 26 extending longitudinally therethrough and having a central valve-casing 27', the valve-chamber 28 of .7

which lies midway of the passage 26 and in communication with both portions thereof.

A pipe or conduit 29comn1unicates withthe. va ve-chamber 28 of the frame member'7',

and a ipe or conduit 30 communicates with the va ve-chamber 28 of the frame member 8, these pipes orconduits being in the form of sleeves or nipples cast in one piece with the frame members and communicating with the valve-chambers through ports 31. These sleeves or nipples constitute the receiving and exhaust connections of the motor, and either of them may act in either capacity, although for convenience of explanation I have indicated the part 29 as the supply-conduit and the part 30 as thedischarge or exhaust the valve-casings of the frame members 7 and 8, and these valves may be three-way valves of any approved construction. In the present instance I have shown them as tapering plugrvalves having ports 37 and 38, by means of which the port 31 may be placed in connection with either branch of the passage 26, according to which of the two positions of the valves are assumed, said positions being indicated, respectively, in full and dotted lines of Fig. 2 of the drawings. They are shown as held in position and adjusted to take up wear by means of screws 38 and washers 38 at their upper ends. In the case now assumed, in which the supply of water under pressure enters at 29, 35 is the inletvalve, and 36 is the exhaust-valve. These valves are caused to move in unison by reason of arms 39, rigidly secured to their lower ends and connected by a link 40, pivoted to the ends of said arms. The simultaneous movement of the two valves to proper relative positions, with relation to each other is thus assured.

The valve-shifting mechanism comprises a tappet-arm 41, secured by a set-screw 42 on the projecting end of the piston-rod25. This arm extends downward and embraces or straddles a valve-rod 43, adapted to slide in guide-apertures 44 in the leg-pieces 17 of the frame end members 3 and 4. This rod has abutments against which the arm 41 strikes as it approaches the limit of its movement in each direction, so as to shift the valve-rod. These abutments are of any suitable construction, and in the present instance I have shown the outer abutment as composed, of a split key 45 and washer 46, while the inner abutment is composed of an arm 47, secured to therod 43 at one end and having its other end formed into a yoke 48, which embraces the piston-rod 25, and thus prevents the valve-rod 43 from turning. The arm 47 by its contact with the cap 22 limits the motion of thevalve-rod in one direction, its motion in the other direction being limited by a stop 49, shown as composed of a split pin and Washer.

The valve-rod carries a tappet-finger 5O adjustably secured thereon by means of asetscrew 51. With this tappet-finger there cooperates a valve-shifting lever 52, having contact-pieces 53 and 54, adapted to be alternately engaged by the finger 50, a recess 55 being formed between the contact-pieces to receive the end of the finger 50 as the lever 52 passes its central position. The lever 52 is provided with a projecting arm 56, having pins 57 and 58 extending therefrom in opposite directions. The lever 52 is pivotally mounted on a bearing 59, formed on the lower end of the valve 35, and the pin 57 is arranged to engage in one direction with the arm 39 of said valve and in the other direction with an arm 60,which forms an extension of the arm 39 in the opposite direction. The pin 58 has connected to it one end "of a spring 61, the other end of which is connected to a fixed part on the opposite side of the 'motoras, for instance, a pin or post 62, mounted in the valve-casing 27 of the valve 36. This connection of the spring is transversely opposite to the pivotal support of the lever 52., so that as soon as said lever has been moved beyond a central position in either direction, said central position being that in which the pins 58 and 62 and the pivotal support' 59 of the lever are in alinement, the lever will be thrown fully over to that side toward which it is moving. By reason of this construction the valve-rod and finger 50 are only required to move the lever 52 to a point slightly beyond its central position, whereupon the spring 61 will complete the movement and will almost instantaneously move both valves over into free open position, such position being the opposlte. of that formerly assumed by them. Stops 61 limit the I movements of thelever 52.

63 indicates a bridge-bar or strut connects ing the side members centrally at their lower portions, one end thereof being mounted on the pin or stud 62, while the other end is mounted on a screw bolt 64, which is threaded into the lower end of the valve 35.

From the foregoing detailed description of the construction of the motor its general mode of operation will be readily understood. With the parts in the position shown water entering through the part 29- will pass through the conduits formed in the side and end frame members and enter the cylinder at the end to the right of Fig. 2, forcing the piston outward until the arm 41 thereof comes into contact with the abutment on the valverod formed by the washer 46 and pin 45. The valve-rod will then. move in the same direction along with the piston and pistonrod, its arm 50 being in engagement With the contact-piece 53 of the lever 52, and said lever will be turned upon its pivotal support until slightly past its central position, in which position 'of the parts the arm 50 extends into the recess 55. The spring 61 then quickly throws the lever 52 over into its the water occurs and the piston moves back to its original position. Toward the end of the stroke in this direction the arm 41 comes into contact with the arm 47, whereupon the arm 50 by its contact with the contact-pieces 54 of the lever 52 carries said lever backward to and past its central position, when the sprin 61 throws said lever back to the position s own in Fig. 4, and the contact of the pin 57 with the arm 60 will again shift the valves.

It will be noticed that the arrangement of the parts is such that the valves remain stationary until the closing portion of ,the movement of the lever 52 in each direction, the shifting of the valves occurring quickly during the last portion of said movement when either the arm 39 or the arm 60 is. struck b the pin 57. Thus the valves are shifted a most instantaneously ateach end of the stroke, and the only Work which the piston has to do in effecting this shifting is the movement of the lever 52 through a little more than half of its range of motion against the resistance of the spring 61, which spring accomplishes the shifting by-the impact or blow of the pin 58 after it is moved through a considerable are without any resistance whatsoever, so that its momentum is correspondingly great and any resistance of the valves is thus readily overcome:

It will be understoodthat the piston-rod is adapted to be coupled to any mechanism which it is desired to operate, such as an icecream freezer, washing machine, or any other device capable of being operated by a reci rocating motion. The motor may be rea ily mounted in an desired position, either horizontal or vertical, and the sup ly of water under pressure may be connected to either side, the exhaust being discharged from the opposite side. Suitable pipes or hose may be connected to the supply and exhaust connections, as may be desired;

It will be seen that the structure is exceedingly simple, the frame being composed of four parts, through which the water-passages are formed, two of these parts havin the cylinder-heads formed therewith an the other two having the valve-casin s formed therewith, said valves being locatec on op 0- site sides of the central portion of the cy inder, so as to be readily accessible. The cylinder is a plain section of cylindrical tubing, unthreaded and otherwise unfinished, and the castings of which the frame is composed haveno'machine-fitted joints, the gaskets and connecting-bolts effecting a water-tight junction between the frame members and the cylinder, and the tension of the bolts which draw the end members together being resisted by the rigid castings forming the side members, which latter serve not only as conduits for the water, but also as struts or compression members to cooperate with the tension members, which are the bolts or threaded rods.

I do not wish to be understood as limiting myself to the precise details of construction hereinbefore. described, and shown in the accompanyin drawings, as it is obvious that these details may be modified without departing from the rinciple'of my invention.

Having thus ful y described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a water-motor of the character described, a cylinder consisting of an openended tube, in combination with a supporting-frame comprising end and side members and means for connecting the same, the end members forming the cylinder-heads, the side members having valve-casings, and inlet and exhaust valves located in the casings of the respective side members, and passages extending through both the side and end members and connecting both cylinder ends with both of the valves, substantially as described.

2. In a water-motor of the character described, the combination, with a cylinder consisting of an open-ended tube, of a supporting-frame therefor comprising end and side pieces having intercommunicating water-passages, the end (pieces having seats for the ends of the cylin er and side members provided with packing-gaskets, the side members comprising water connections and valve-casings with controlling-valves therein, and tension-bolts connecting the end members to draw them toward each other, substantially as described.

3. In a water-motor of the character described, a cylinder consisting of an openended tube, in combination with a sup orting-fraine comprising side and end mem ers, each end member having a central portion forming a cylinder-head and having a packed seat for the cylinder end, and lateral portions having packed seats for the ends of the side members, each end member having a Waterpassage formed therein with openings or ports at the ends of the cylinder and side members, each side member having a longitudinal opening therethrough from end to end, a central valve-casing and valve, and a water connection, and tension-bolts for drawing the end members toward each other and against the ends of the cylinder and side members, substantially as described.

4-.. In a water-motor of the character described, the combination, with a cylinder and piston, of two rotatory threeway valves located on opposite sides of the cylinder, connected with both ends thereof, and having supply and exhaust connections, said valves having arms and a connecting-link to cause them to operate in unison, one of said valves havin a second arm extending'in the opposite direction from the first-mentioned arm, a'shifting lever ivotally mounted concentricallv with said last-mentioned valve and provided with contactieces and an intervening recess on one si e of itspivotvand a projection on the other side of its pivot adapted to engage the valve-arms at the limitsof itsstrok'e, a shifting rod provided with a tappet-arm to alternately engage the contact-surfaces of the shifting lever, a proj ection on the piston-rod to engage and move the shiftin rod at the ends of the istonstroke, and a s ring acting on the s ifting lever to resist the first part of its movement and to accelerate or cause the last art of its movement, after said shifting ever has passed the center of its movement, to cause the =said'lever to strike one or the other of the valve-arms with the momentum due to the unresisted action of the spring toward the end of the-stroke of the shifting lever, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN H. ROSE. Witnesses:

ALBERT KERN, LUCIUS 0. (300K.

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