US530848A - Pump-motor - Google Patents

Description

(No Model.) 2 sheetssheet 1'.

B. MELILIQVOR 0F MARK.

PUMP MOTOR. 4

1 I0."5 30,E 348. Patented Dec. 11, 1894.

THE Norms PETERS co, PHOTO-LITHQ, wasnmamn, 0.1:v

(No Model.) 2' Sheets-Sheet 2.

B. MELLOR 01' MARK;

PUMP MOTOR- No. 530,848. Patented D60. 11,1894.

UNIT D STATEs PATENT OFFICE.

PUMP-MOTOR.

SPECIFICATION forming part of Letters Patent No. 530,848,

dated December l 1, 1894.

Application filed February 18,1894- Serial No. 500,021. (No model.)

To all whom it may concern.-

Be it known that I, BENJAMIN MELLOR of Mark, a citizen of the United States, residing. at Ellicott City, in the county of Howard and State of Maryland, have invented a new and useful Pump-Motor, of which the following is a specification.

My invention relates to a pump motor or operating mechanism, and consists in an improvement upon the construction shown in Patent No. 510,983, issued to me on December 19, 1893; the objects in view being to provide improved means for operating the tilting-cup, whereby the contents of the latter are discharged without the use of a permanently located trip device, as in my former patent above mentioned; furthermore, to provide means whereby the supply of water for operating the motor is checked during the descent of the tilting-cup to avoid the waste of water when the supplyis small; furthermore, to provide improved means for conveying the motion of the tilting-arm or lever to the pumprod and for'maintaining the latter and causing it to travel in a line parallel with the axis of the pump-cylinder; and, furthermore, to provide for a readjustment of the parts comprising the motor, whereby it is adapted for use under different conditions and where the power is derived from different sources.

Further objects and advantages of the invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

Referring to the drawingsz-Figure 1 is a view of a pump operating mechanism constructed in accordance with my invention and arranged to pump from a source which is located at a distance from and above the plane of the pumpcylinder and motor. Fig. 2 is a view showinga slightly modified arrangement of the parts and indicating in dotted lines the arrangement of a'hand-lever when it is necessary or preferable to operate the motor by this means. Fig. 3 is a detail'view in perspective of the adjustable bifurcated standard. Fig. at is a detail plan view of the tilting-cup. Fig. 5 is a detail view of the connection between the lever and the pump-rod. Fig. 6 is a similar view of a modified form of this connection. Fig. 7 is a detail view of a portion of the pump-mechanism, showing the manner of applying a hand-operating device thereto.

Like numerals of reference indicate like parts in all the figures of the drawings.

1 designates the base or ,frame of the improvedmotor; 2, the cylinder; 3, the plunger operating therein; 4, the pump-rod; 5, a service-pipe communicating with the cylinder and adapted to extend to the point'of use, and 6 the flume from which the, supply of water for operating the motor is derived.

' The standard 7, which is arranged near one end of the base or frame 1 and adjacent to the cylinder, is provided with a vertically adjustable stem 8, which fits in a tubular socket 9 and is held at the desired adjustment by means of set-screws 10. The socket portion of the standard is provided at its lower end with a horizontal opening 11, through which extends the base 1, said socketportion being fastened at any desired point of the base to vary the distance of the standard from the cylinderby means of the setscrews 12. The standard is provided at its upper end with twin horizontally disposed anti-friction rolls 18, between which extends the pump-lever 14, the latter being secured at an intermediate point to the pump-rod 4 by a swivel connection 15, and the upper end of the pump-rod 4 operates in a guide 16 consisting of the anti-friction rolls 17 mounted in a bracket 18 which is secured to the base 1. By means of the guide 16 the pump-rod is held in accurate alignment with the axis of the cylinder and is caused to travel in such alignment, and owing to the swivel connec tion between the pump-lever and the pumprod and the sliding connection between the pump-lever and the standard? the necessary longitudinal freedom of movement of the lever is possible to accommodate such vertical movement of the pump-rod. Said swivel connection 15 consists of a loop or opening 19 formed in the pump-rod through which the pump-lever extends and a bolt 20,.which extends horizontally through aligned perforations in the sides of the said loop and in the pump-lever. A series of perforations 21 is formed in the pump-lever, whereby the point of connection of the pump-rod to the lever may be adjusted. y

In Fig. 1 I have shown an arrangment of the mechanism in which the operating-lever is different from the pump-lever and is shown at 22. This operating-lever 22 is fulcrumed upon a bifurcated standard 23 also adj ustably mounted upon the base 1 by means similar to those described in connection with the standard 7, and is provided with vertically adjustable stems 24 fitting in a socket portion 25 and held at the desired extension or vertical adjustment by means of the setscrews 26. This standard is bifurcated to allow the pump-lever 14 to extend in a straight line below the operating-lever, and the journal, for the operating lever consists of a swiveled block 27 mounted at its extremities in bearings 28 formed in the upper ends of the stems 24 and having a central sleeve portion 29, through which the operating-lever extends and in which it is secured at the desired point by means of a set-screw 30.

Alink 31 forms the connection between the extremity of the short arm of the operating arm and the contiguous extremity of the pump-lever, said link being provided with a series of perforations 32 to receive the pivotbolt 33 at the end of the operating lever, and is provided, furthermore, at its lower end with a sleeve 34 which receives the extremity of the pump-lever and is fastened thereto by means of a set-screw 35.

Instead of arrangingth elink 31 between the extremities of the operating and pump-levers, it may be disposed as shown in dotted lines in Fig. 1 to connect the long arm of the operating-lever at a point near its fulcrum to the vertically subjacent point of the pump-lever.

36 represents a leaf or plate spring, which is secured to the base 1 and is arranged at its free end under the extremity of the pumplever for a purpose hereinafter described.

37 represents the tilting cup, which is adapted to be secured either to the operatinglever, as shown in Fig. 1, or the pump-lever, as shown in Fig. 2, and for this purpose it is provided with a bifurcated stem 38 having a shank 39 to fit in a socket 40 at the extremity of the lever to which it is attached. 37 is swiveled between the extremities of the parallel arms 41, forming the bifurcation of the stem, and secured to the exterior surface of the sides of the cup are the perforated V- shaped straps 42. The vertical portions 43 of these straps are perforated to receive the pivots which form the connection between the tilting-cup and the arms of the bifurcated stem, and the inclined portions 44 of said straps are perforated, as shown at 45, to receive the stop-pins 46 and 47, which are arranged respectively above and below the plane of the arms of the stem. Secured to the stem by means of a collar 48 are the tilting springs 50 and 51 arranged respectively above and below the plane of the same in position to engage the pins 46 and 47. The tilting-cup is swiveled a short distance in advance or in front of its center of gravity,

The cup whereby when elevated, as shown in Fig. 1, it tips slightly to the rear, thereby preserving the greater portion of the weight of the water in rear of its pivotal point and preserving its upright or receiving position. In this position of the tilting-cup the pin 46 bearing upon the upper side of the upper spring 50 depresses the latter and holds it against the upper surface of the stem, as shown in Fig. 1.

52 represents anadjustable counterbalancing weight, which is arranged upon a rod 53 secured to one side of the tilting cup, said weight being arranged and secured at any desired point of the rod by means of a setscrew 54. By means of this weight the precise relative weights of the front and rear portions of the tilting-cup may be regulated.

Pivoted at the outlet-end of the flume 6 is a gate 55, having an angularly disposed arm 56, which carries an adjustable weight 56. When the gate is in its closed position, as shown in Fig. 1, the arm 56 with its weight, inclines rearward and thereby holds the gate in its closed position, but when the weighted arm is thrown in front of a vertical plane embracing the pivotal point of the gate it will act to maintain the gate in its open position.

Secured to the tilting-cup at its opposite sides and between its pivotal point and its rear end are the standards 58 which support the transverse trip-bar 59, andthe gate is provided with a trip-arm 60, which is arranged in the path of said trip-bar as the tilting-cup ascends. Therefore, with the parts in the position shown in Fig. 1, when the trip-bar 59 strikes the trip-arm 60 it opens the gate and throws the-weighted arm 56 in front of the plane of the pivotal point of the gate. The gate is provided at its lower edge-with a finger 61, which, as shown in the drawings, is curved and is of such alength that when the trip-arm is elevated and thegate is opened it will engage under the trip-bar. Therefore when the tilting-cup commences its descend ing movement the trip-bar operating upon said finger will partially close the gate, and in doing so will throw the weighted arm 56 in rear of the plane of the pivotal point of the gate, whereby the gate will be closed.

It will be understood that the mechanism embodying my invention may be operated successfully without the use of this gate and closing devices, as in the arrangement shown in my said former patent, but where the supply of water for operating the motor is small and it is desirable to economize the same, the use of the gate is of advantage.

It will be understood that the construction of the cylinder may be varied without affecting the operation of the other parts of the mechanism, and that the valves for controlling the influx and efflux may be, as in the ordinary arrangement, disposed within or contiguous to the cylinder, as shown in Fig. 2 of the accompanying drawings, but itsometimes occurs that the supply of water for operating the mechanism is located at a con- IIO siderable distance from the point of supply of the water which is to be pumped, and if the valves for controlling the passage of the water are located in or near the cylinder, it is obvious that the water from the spring or well or other source of water to be used must be piped from such point of source to the cylinder and thence from the cylinder to the reservoir or building. This piping from the point of source to the cylinder is unnecessary and may be avoided by a simple arrangement, such as I have shown in Fig. 1, in which the pipe com municates freely with the cylinder and is provided at a point adjacent to the source of water to be pumped with a branch 62 having adjacently located valves 63 and 64, the former being arranged in the pipe 5 to prevent the backing of the water when the plunger of the pump rises, and the latter being arranged in the branch in such a manner as to allow the water to be drawn from the spring or source into a portion of the pipe 5 which is between the valve 63 and the cylinderwhen the plunger rises and which cuts off the passage into the branch-pipe when the plunger descends. Thus, when the plunger rises, the water from the spring enters the pipe 5 below the valve 63 and passes a short distance downward toward the cylinder, but upon the return or downward stroke of the plunger this water is forced above the valve 63, and hence the operation is similar to that performed when the valves are arranged contiguous to the cylinder, but the unnecessary piping of the water is avoided.

The plunger, which I have shown in the drawings, is of the expansible type, and is provided with a compressible core 65 of rubher or similar material interposed between upper and lower plates 66 and 67, the former of which is held in place bya nut 68 threaded upon the plunger-rod, whereby when this nut is adjusted downward upon the rod, thecore of the plunger may be compressed vertically and thereby expanded laterally to fit snugly. In order to allow for the.

free end or adjacent to the point of connection of the link 31, and is .held in place by means of the adjustable collars 72 arranged on opposite sides thereof. This operatingweight is adjustable upon the pump-lever to vary the force of downward pressure upon the plunger, and it will be'seen that it is the gravitation of this weight 71 which performs the actual work of forcing the water into the service-pipe 5, and for this reason said weight front end of the latter.

may be termed an operating-weight, which is permanent in its downward pressureand which must be elevated at intervals in order tha-tit may have effect in operating the'pumplever. The means for elevating this operating-weight at intervals have been described above, andconsistsof the operating-lever and the variable weight consisting of the tiltingcup and connections.

A counterbalancing weight 73 is attached adj ustably to the short arm of the operatinglever 22 to counterbalance the weight of the tilting-cup, whereby in the operationof the mechanism the weight of such tilting-cup is without effect and may be discarded from the calculation, except, in so faras its inertia affects the movements of the parts.

Reference to Fig. 1 of the drawings will show that by removing the link 31 or transferring it to the position shown by dotted lines in said figure, the downward movement of the tilting-cup will be communicated directly to the pump-lever l4, and the weight of such tilting-cup and contents will operate in conjunction with the operating weight 71 instead of inopposition thereto as in the arrangement shown by the full lines, and therefore by .increasing the size of the'weight 73 or arranging it far enough from the fulcrum of the lever 22 to counterbalance the weight of the tilting-cup when empty and the weight 71, the weight of the tilting-cup and contents when filled will assis-tthe operating-weight; or, the

ing the water into the service-pipe.

The spring 36 assists in raising the free end of the pump-lever when it reaches the limit of its downward movement and cushions the jar of the mechanism.

The operation of the tilting-cup, in so far as it relates to the opening and closing of the gate controlling the flow of water from the flume, has been described, and a comparison of Figs. 1 and 2 will show that when the tilting-cup has been filled and commences its downward movement, the gradual change of the inclination of the operating lever elevates the rear end of the cup by upward pressure upon the pin 46, and hence gradually throws the water contained in the cup toward the When the weight at the front end of the'cup overbalances that at the rear end the cup is reversed or tilted, as indicated in-Fig. 2, such tilting operation being assisted by the upper spring 50. As the cup swings over to the position shown in Fig. 2, the pin 47 contacts with the lower spring 51 and thereby cushions the jar of the cup, and at the same time when the cup is relieved of the weight of the water, the said spring '51 by downward pressure upon the pin 47 re-v turns the cup to its original or upright position. In other words, the springs 50 and 51 a are not of sufficient strength to materially affect the position of the tilting-cup when the latter is weighted by its contents, but are of sufficient weight to affect the position of the cup when empty, and therefore when the contents have been discharged the cup is immediately righted by the operation of the spring 51.

In connection with Fig. 2 it should be noted that the operating-lever and means of connection to the pump-lever are omitted and the variable weight is attached directly to the end of the pump-lever, whereby the downward movement of such pump-lever is the direct result of the weight of the tiltin g-cu p and contents. In this arrangement of parts a counterbalancing Weight 74: is attached adj nstably to the short arm of the lever, whereby the actual weight of the tilting-cup becomes an unimportant factor in the operation. In Fig. 7 I have shown the arrangement of means whereby the pump may be operated by handpower by placing aweight 80 in the position shown to depress the lever and pump-rod. Other means, such as wind-power, may also be employed in this connection to elevate the pump-lever.

.In order that the parts of the mechanism shown in Fig. 1 may be employed in the various adaptations of the device, I have shown the lever 22 arranged to operate as the pumplever in Fig. 2, and it is obvious that owing to the forms of the connections which I employ this arrangement of parts may be accomplished without the aid of the skilled mechanic.

In Fig. 6 I have shown a modified form of connection between the pump-lever and the pu1np-rod when it is desirable to provide a fixed fulcrum for the pump-lever instead of the sliding fulcrum above described. Said modified connection consists essentially of a sleeve 75, fitted upon the pump-lever and secured by means of a set-screw 76,and a loose link 77 pivotally connected at its extremities to ears 78 and 79, which are arranged respectively upon the sleeve and the contiguous extremity of the pump-rod.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

Having described my invention, what I claim is- 1. In a device of the class described, the combination with a cylinder, a plunger, and a plunger-rod, of a guide arranged above the cylinder and having anti-friction rolls to direct the movement of the plunger-rod in alignment with the axis of the cylinder, a standard having an extensible stem, means for locking said stem at the desired extension, anti-friction rolls mounted in suitable bearings in the stem, a pump-lever swiveled to the pump-rod, and fitting between the antifriction rolls, and means for operating the pump-lever, substantially as specified.

2. In a device of the class described, the combination with a cylinder, a plunger operating therein, a plunger-rod connected to said plunger, and means for guiding the plungerrod, of a standard having a socket portion provided with a horizontal opening to receive the base of the mechanism, and a stem fitting adj ustably in the socket portion, means for locking said stem at the desired extension, a pump-lever slidablyfulcrumed to the upper end of thestem, and means for operating the pump-lever, substantially as specified.

3. In a device of the class described, the combination with pump-mechanism, and a lever connected to said mechanism, of a Variable weight consisting of a tilting-cup fulcrumed at a point in advance of its center of gravity, lateral pins carried by the tiltingcup, and tilting springs carried by the lever and arranged at their extremities in operative relation with said pins, to cushion the cup and assist gravity in tilting and returning the same substantially as specified.

4. In a device of the class described, the combination with a pump-mechanism, and a leverconnected therewith, of a variable Weight consisting of a bifurcated stem, a tilting-cup fulcrumed between the arms of said stem,.

pins adj ustably secured to the sides of the cup above and below the plane of said stem, and tilting springs secured to and carried by the stem and arranged at their free ends in operative relation with the pins, substantially as specified.

5. In a device of the class described, the combination with a pump mechanism and a lever connected therewith,ofavariable weight carried by the lever and comprising a tilting cup pivoted in advance of its center of gravity and having lateral upper and lower stop' pins arranged in rear of its pivot point, tilting springs carried by the lever and arranged with their free ends in operative relation with said pins to cushion the tilting cup and assist in tilting and returning the same, and an adjustable weight carried by the tilting cup and adapted to be arranged either in advance or in rear of its pivot point to secure equilibrium of the parts, substantially as specified.

6. In a device of the class described, the combination with a pump mechanism, and a lever connected therewith, of avariable weight consisting of a tilting-cup, and means for tilting the same, a gate controlling the outlet from the water-supply flume, and having a weighted arm adapted to be arranged upon either side of the plane of the pivot of said gate to maintain the latter either in its open or its closed position, a trip-bar carried by the tilting-cup, and a trip-arm connected to the gate and arranged in the path of said tripbar, substantially as specified.

7. In a device of the class described, the

combination with a pump mechanism, and a ger respectively during the upward and downleverconnected therewith,ofavariable weight ward movements of the variable weight, subconsisting of a tilting-cup, and means for tiltstan tially as specified. ing the same, a gate controlling the outlet In testimony that I claim the foregoing as I 5 5 from the water supply fiume, a weighted arm my own I have hereto affixed my signature in arranged to lie 011 either side of the plane of the presence of two witnesses. the pivot of said gate to hold the latter in either its closed or open position, a trip-arm, BENJAMIN MELLOR 0F MARK and a trip-finger carried by the gate, and Witnesses: IO a trip-bar carried by said tilting-cup and J. MALCOLM DORSEY,

adapted to engage the trip-arm and trip-fin- I. E. GANAHER.

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