US687449A - Pump-governor. - Google Patents

Description

N0. 687,449. Patented Nov. 26, |90l.

R. CONHADER.

PUMP GOVERNOR.

(Application led Sept. 10, 1900.)

2 Sheeis-Sheet I.

'(No Model.)

IH: Nonms verras cc.. PNro-uno.. wAsHxNmon. nA c:

Patented Nov. 26, |9o|.- y

No. 687,449. H. CONHADER.

' PUMP GovEnNon;

(Al-aplication levd Sept. 10, 1900.) (Nollodel.) 2 Sheets-Sheet 2.

THE Norms Ferias 0d.4 moauma. wnsmmsmu4 u c4 UNITED STATES PATENT OFFICE.

RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA.

PUMP-GovR-NGR.

SPEGFICATION formingpart of Letters Patent o. 687,449, dated November 26, 1901. Application led September 10, 1900. Serial No. 29,490. (No model.)

T @ZZ whom t may concern:

Be it known thatl, RUDOLPH CONRADER@ a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Pump-Governors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaius to make and use the same.

This invention relates to governors for pumping-engines; and it consists in certain improvements in the construction thereof, as will be hereinafter fully described, and pointed out in the claims.

The object of the invention is to provide pumping-engines with agovernor which will increase or decrease the speed of the engine in accordance with its requirements.

Another object of the invention is to provide an automatic stop device, so thatin case of accident to the driving-belt or otherwise the governor-valve will immediately close.

Other objects of the invention relate to details of construction, which will appear in the following specification and claims.

Under application filed January 31,. 1900, Serial No. 3,473, I have claimed generally a pump-governor having a centrifugal element and a centripetal element and a means actuated by the pumped fiuid for varying the relative strength of one of the element-s Within the limits of the power exerted by the other element. In that device the centripetal element consists of two springs of different strengths, with apparatus actuated by the pumped fiuid for changing the centripetal element so as to bring one or the other of the springs into action, and thus change the power of the centripetal element. In this apparatus the pressure device was ordinarily operated from one extreme of its movement to the other with each change of pressure. This was due to the fact that with the apparatus there shown it was difiicult to exert a couuter-pressu re upon the pressure device that would equalize the force asserted by the pressure `device throughout its movement. With the present invention I have arranged an apparatus by means of which the pressure on the pressure device may be equalized at all points in its movements, so that the force of the centripetal element of the governor may be varied throughout the action of the pressure device. This feature of the iuvention is applicable, however, not only to a governor1 having the varying centripetal element within the limits of the power exerted by thecentripetal element, butI is also applicable to that class of governors in which the governor-valve is directly actuated by the pressure device. Y

The invention is illustrated in the accompanying drawings, as follows:

Figure 1 shows a frontelevation of the governor. Fig. 2 shows a side elevation of the. governor. Fig. 3 shows a section on the lines 3 3 in Figs. 1 and 2. Fig. 4. shows the details of the stop device.

A marks the valve-chamber. This has the usual valve-diaphragm a. The valve B is of the usual balanced type und is provided with a stem b. The governor is mounted on a frame O. This frame is provided with a box c for the drive-shaft d, the box c for the carricr E, and an arm c2 for the centripetal lever G. The drive-shaft is provided with a drivepulley D and a bevel-gear d. The bevel-gear d. meshes the gear e. The gear e is secured to the carrier E. The governorweights F F are pivotedon the carrierEand are provided with the usual link mechanism. (Shown in dotted lines in Fig. l.) This link mechanism is connected to a stern b', so arranged that with an outward or centrifugal movement of the weights the stem b is pressed downwardly. The stem b' and the stem B are connected to a yoke b, with which the end g of the lever G engages. The lever G is pivoted at c3 on the arm of c2. The centripetal spring H is tensioned against a nut I-I' to the collar h'. The collar h rests on the end g of the lever G. The spring H is coiled around the rod h. This rod is threaded through the nut H and is provided with a stop-nut h2. The rod h passes through the end g of the lever G and is provided with a nut h3 on its lower end. The nut h3 and the collar h' so engage the end g' as to compelits movement in both directions with the rod h. The nut These guides are ICO `anisrn comprised in the levers J J.

The frame C is carried by a base-plate C. Extending from this base-plate is a perforated projection C2. The perforation of this projection comes directly under the sliding frame I. A cylinder L, having the shoulder Z', is placed in the perforation. The cylinder has its upper end screw-threaded, and a cap Z2 is screwed down against the projection C2, thus securing the cylinder in place. In order` to prevent the cylinder from turning in the socket, a set-screw Z3 is passed through the shoulder Z' into the plate C2. A piston L' is arranged to operate in this cylinder. An inlet L2 is connected with the receiver or receptacle (not shown) for the pumped fluid, so that the piston L' is subjected to the pressure of the pumped fluid. A stem Z extends from the piston L' to a cross-head 'i' at the lower end of the frame I. It will readily be seen that with the upward movement of the piston L', by reason of an` excessive pressure in the receiver, the frame I is carried so that the tension on the spring H is reduced. This decreases the force exerted by the centripetal element of the governor, so that the centrifugal weights are carried to their outward position at a lower speed than before the movement of the piston. In this way the speed of the engine is reduced. Where the governor is used on a double engine, so that a complete stoppage of the engine is not objectionable,

the nut h2 may be so arranged that it will:r

contact the nut H' before the piston L' reaches the limit of its upward movement. When the nut H' strikes the nut h2, the r od h is lifted positively with the frame I, lso that the governor-valve may in this way be entirely closed and the governor thrown out of action.

In order to compensate for the force of the spring H and to exert a counter-pressure on the pressure device comprised in the cylinder and piston mechanism, I provide the following mechanism: Levers J are pivoted on the cross-head t" and also on the levers K. It will be seen that with the upward movement ot' the cross-head t', by reason of a forward movement of the piston L', the levers K are pressed outwardly by the toggle-joint mech- It will also be noticed that the arm of the lever J is constantly increased with the upward movement, so as to exert a greater force on the levers K as the piston L' moves to its upper position. Extending outwardly from the levers K are the rods m, which are screwthreaded and arranged to turn in the sockets lc in the levers K. These rods are provided with a hand-wheel m2, so that the rods can be readilyoperated. Cross-headsm'arescrewed on the rods m. Springs M extend between the cross-heads m' and are tensioned to tend to draw the levers K together. Jam-nuts m3 are provided for locking the cross-heads at theirdesiredpositions. ThespringsMshould have sufficient strength to prevent a movement of the piston L' before the minimumreceiver-pressure is reached. To do this, it is necessary for the springs M to have sufficient strength to overcome the force exerted upon the cross-head 'i' by the piston L and the spring I-I. The length of the spring is such that the strength of the spring increases approximately as the arm of the levers J increases. Ordinarily the increase in the strength of the spring as it is extended should increase slightly less than the increase in the length of the arm J, because as the cross-head 'i' is raised the upward tension on the sliding frame I, by reason of the spring H, is decreased. This difference can be adjusted exactly as desired by increasing the initial tension of the springs INI, changing their length, or shifting their position on the levers K. By this means the minimum pressure at which the piston L' moves can be controlled, and the pressure at which the piston L" reaches the extreme upward end of its movement can be adjusted and in this way the speed of the engine can be constantly varied after the minimum pressure is reached up to the time that `the maximum pressure is reached, when the engine is brought to its minimum speed, and

unless the nut h2 is adjusted for a double engine the engine is at all times subjected to the action of the governor, so that even when going at the minimum speed should there be an addition to the load which would tend to ,reduce it below this speed the governor immediately acts to compensate for this additional load. The pressure device, however, of this invention, as before stated, is adapted to operate upon other classes of governors than that shown, and in the broadest phase of my invention I do not wish to be limited to the relation of the pressure device and the connection mechanism between it and the valve shown. In order to limit the upward movement of the cross-head 7l' as desired, I have provided the stops c5. These are in the form of set-screws and are carried by the guide c4. The stops t' are arranged on the frame I in the path of the stop c5.

The automatic stop device is constructed as followsz' A head Nis journaled on the drive-shaft Z. This head is provided with an opening n, through which the drive-shaft passes, the segmental slot-s n3, and the socket n2, in which the rider-pulley arm is placed. Passing through the slot-s n3 are set-screws m5. These set-screws are secured in the flangepiece N2. The flange-piece is provided with a segmental flange n'. A lever O is pivoted on the arm c2 at c3. The outer end of the lever is provided with a roller o. This is arranged to rest normally on the flange n'. A weight o' is arranged on the lever O and is sufficient to operate the valve as against the strength of the governor when the lever O is released. A lug o' extends from the lever O over the lever G, so as to engage the lever G and vary the lever G with the lever O when the lever O is moved. An arm n4 is secured in the socket nand a rider-pulley N' is journaled on the end of this arm.

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The operation of the stop device is as follows: In the normal position of the rider-pulley the flange n is beneath the shaft d and the roller o rests upon this flange, thus holding the lever O in its upper position. With an accident to the governorbelt the riderpulley drops to its lower position and the flange n is carried by the roller o, thus allowing the lever O to drop. This closes the valve. By providing the head with the slots n3 the head end can be turned relativelyto the dangepiece N2, so that the stop device may be adapted to an Aupright engine or to any in connection with a governor-belt.

What I claim as new is- 1. In a pump-governor, the combination of a speed-governor comprising a centrifugal and a centripetal element a governor-valve a pressure device actuated by the pumped fluid; a lever mechanism connected with said pressure device; a counter-pressure means connected with said lever mechanism in opposition to the pressure device, said lever mechanism being `arranged to operate upon one of the elements of the speed-governor and to present a varying arm to the counter-pressure means and pressure device.

2. In a pump-governor, the combination of a speed-governor comprising a centrifugal and a centripetal element; a governor-valve; a pressure device actuated by the pumped fluid; a lever mechanism connected with said pressure device; a counter-pressure means connected with said lever mechanism in opposition to the pressure device, said lever mechanism being arranged to operate upon one of the elements of the speed-governor and to present a varying arm to the counterpres sure means and pressure device, to compensate for the variation in the counter-pressure on the pressure device through the action of the speed-governor element.

3. In a pump-governor, the combination of a speed-governor comprising a centrifugal and a centripetal element; a governor-valve; a pressure device actuated by the pumped iiuid; a lever mechanism connected with said pressure device; a counter-pressure means connected with said lever mechanism in opposition to the pressure device, said lever mechanism being arranged to operate upon the centripetal element ofthe governor and to present a varying arm to the counter-pressure means and pressure device.

4. In a pump-governor, the combination with the governor-valve; of a pressure device actuated by the pumped fluid; a lever, J, and a lever, K, arranged in toggle-joint relationthe lever J, being connected with said pressure device; a counter-pressure means arranged to operate upon said levers; and a connecting mechanism between the pressure device and the governor-valve, said connecting mechanism being arranged to influence the action of the governor-valve with a movement of the pressure device.

5. In a pumpgovernor, the combination with the governor-valve; of a pressure device actuated by the pumped liuid; a lever, J, and a lever, K, arranged in toggle-joint relationthe lever, J, being connected with said pressure device; a spring, M, tensioned against the lever, K; and a connecting mechanism between the pressure device and the governor-valve, said connecting mechanism being arranged to influence the action of the governor-valve with a movement of the pressure device.

6. In a pump-governor, the combination with the governor-valve and the centrifugal and centripetal elements; of a pressure device; a lever mechanism connected with said pressure device; a counter-pressure y means connected with said lever mechanism in opposition to the pressure device; said pressure device and counter--pressure means being arranged to operate against each other through said lever mechanism ona relatively varying arm; and a connecting mechanism between said pressure device and one of the elements of thelgovernor for varying the strength of one of the elements of the governor relatively tothe other element of said governor, within the limits of the power exerted by the other element.

7. In a pump-governor, the combination with the governor-valve and the centrifugal and centripetal elements; of a pressure device and lever mechanism connected with said pressure device; a counter-pressure means connected with said lever mechanism in opposition to the pressure device; said pressure device and counter-pressure means being arranged to operate against each other through said lever mechanism with a relatively varying arm; and a connecting mechanism between said pressure device and the centripetal element of the governor, said connect- IOO ing mechanism being arranged to vary the strength of the centripetal element with the movement of said pressure device within the limits of the power exerted by the centrifugal element.

8. In a pump-governor, the combination with the governor-valve and the centrifugal and centrpetal elements; of a pressure device and lever mechanism connected with said pressure device; a counter pressure means connected with said lever mechanism in opposition to the pressure device; y a spring connected with said lever mechanism in opposition t0 the pressure device, said spring and pressure device being arranged to operate upon a varying arm of said lever mechanism; and a connecting mechanism between said pressure device and one of the elements of the governor for varying the strength of oneofy the elements of the governor relatively to the other element of said governor, within the limits of the power exerted by the other element.

9. In a pumpgovernor the combination with the governor-valve and the centrifugal and centripetal elements of the governor; a

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pressure device arranged to be actuated by the pumped iiuid; a lever mechanism comprising levers, J and K, arranged in togglejoint relation; a counter-pressure means arranged to operate upon said levers; and a connecting mechanism between said pressure device and one of the elements of the governor, said connecting mechanism being arranged to vary the power of one of the elements with a movement of the pressure device Within the limits of the power exerted by the other element of the governor.`

10. In a pump-governor, the combination with the governor-valve; of the cylinder, L; piston, L', therein; the toggle-joint formed by the levers, J and K connected with the piston; the spring, M, arranged to oppose the outward movement of said toggle-joint; and the connecting mechanism between said piston and the governor-valve, said mechanism being arranged to influence the movement of said valve with a movement of the piston, L'.

1l. In a pump-governor, the combination of the governor-valve; the lever, Gr, arranged to actuate said valve; the centrifugal weights, F, arranged to operate upon said valve; the centripetal spring, H; a sliding frame, I, against which said spring is tensioned; the cross-head, t', on said frame; the cylinder, L, connected with the compressed-Huid supply; the piston, L', in said cylinder-stem, I, connecting said piston with the cross-head 1",- the levers, J, connected with said cross-head; the levers, K, connected with the levers, J and pivoted at their opposite end on a part of the governor-frame and spring, M.

12. In a pump-governor, the combination of the governor-valve; the lever, Gr, arranged to actuate said valve; the centrifugal weights F, arranged to operate upon said valve; the centripetal spring, H; a sliding frame, I, against which said spring is tensioned; the cross-head, t', on said frame; the cylinder, L, connected with the compressed-fluid supply; the piston, L', in said cylinder; stem, Z, connectin g said piston with the cross-head, t'; the levers, J, connected with said cross-head; the levers, K, connected with the levers, J, and pivoted at their opposite end on a part of the governor-frame, and spring, M; and a means for securing said springs to the lever, K, and means for varying the tension of the springs.

13. In a pump-governor, the combination of a centrifugal element; a centripetal element; a pressure device arranged to be actuated b'y the pumped fluid and to normally indirectly intiuence the governor-valve by varying the strength of one of the elements Within the limits of power exerted by the other element; a'governor-valve arranged to be actuated by the governor; land a connecting means between the pressure device and the governor-valve for directly actuating the l governor-valve.

14. In a pump-governor, the combination of the centrifugal element; a spring operattermined variation of the tension of said.

spring; and said governor-valve.

l5. In a pump-governor, the combination of the centripetal spring, H; the lever, G, for operating the governor-valve; the governor-valve; the rod, h', arranged to be engaged by said lever; the sliding frame, I; a pressure device operating upon said frame, said frame being arranged in contact with the spring, H, but in position to engage the rod, h, at a predetermined movement of the sliding frame.

1G. In a pump-governor, the combination of a governor-valve; a lever for closing said valve when released; means for holding said lever lnormally out of operative position; a rider-pulley; an arm carrying said rider-pulley; a connecting mechanism between said arm and said means, said connecting mechanism being arranged to release said lever upon a movement of the arm incident to a movement of the rider-pulley by the normal path of a belt in contact with which said riderpulley may be placed; a pressure device arranged on the side of the governor opposite the rider-pulley; and means for conveying the action of the pressure device to the valve.

17. In a pump-governor, the combination of a speed-governor; a drive-pulley for said speed-governor; a governor-valve actuated by said speed-governor; a pressure device actuated bythe pumped fluid; means for conveying the action of the pressure device to the valve; a stop mechanism arranged to close the valve when released irrespective of the position of the speed-governor or pressure device; and means for releasing said stop mechanism with a change in condition of a drive-belt. l

18. In a pump-governor, the combination of a speed-governor; a drive-pulley for saidy speed-governor; a governor-valve connected with said speed-governor; a stop mechanism comprising a lever pivoted to the side of the governor opposite the drive-pulley and eX- tending by the stem to the side of the governor on which the drive-pulley is placed; a stop mechanism arranged to release said lever when the governor-belt is disarranged a pressure device arranged to be actuated by the pumped fluid, said pressure device being at the opposite side of the governor from the driving-pulley; a lever for conveying the action of the pressure device to the valve and means on the stop-leverl for acting upon the IOO IIO

pressure-device lever tor conveying the action of the stop-lever when released to the valve.

19. In a pump-governor, the combination of the governor-valve; the stop-lever, O, for actuating said valve; the iiange-piece for ISO holding said lever normally ont of position; a5, arranged to pass through said slots into Io a head adjustably secured to said iangesaid Iiange-pieee; and a rider-pulley conpieoe; and a rider-pulley connected With said nected to said head.

head.. In testimony whereof I affix my signature 5 20. In a pump-governor, the combination in presence of two Witnesses.

of the governor-valve; the stop-lever, O, for RUDOLPH CONRADER.

actuating said valve; the flange-piece foi` Witnesses:

holding said leverl normally out of position; R. F. LANZA,

a head with segmental slots, n3; set-screws, H. L. LORD.

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