US699865A - Governor. - Google Patents

Description

No. 699,865. Patented may I3, |902.

R. coNRADER.

GUVEBNUR.'

(Application led Apr. 29, 1901.) (un Model.) l 2 sheets-sheet l.

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Patented May I3, |902.

n. coNRAnER.

G U V E R N 0 R.

(Application led Apr. 29, 1901.)

2 Sheets-Shet'l (No Model.)

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NTTnn STATES PATnNT OFFICE.

RUDOLPH OONRADER, OF ERIE, PENNSYLVANIA.

GOVERNOR.

SPECIFICATION-forming part of Letters Patent No; 699,865, dated May 13, 1902. Application iiled April 29, 1901. Serial No. 58,009. (NoAmodl.)

To a/ZZ whom it may concern,.-

Be it known that I, 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 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 appertains to make and use the same.

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

More particularly the invention is adapted to governors for operating on a pump or compressor, and in the laccompanying drawings it is shown as so adapted.

The invention is illustrated in the accompanying drawings as follows-z Figure 1 shows a section of the governor' mechanism on the line 1 l in Figs. 2 and 3. Fig. 2 shows a side elevation of the governor from the right of Fig.v l. Fig. 3 shows a plan view of the gov-ernor. Fig. i shows a detail of the speed-changing device in section on the line 1l i in Fig. I5. Fig. -5 shows a view of the same parts in section on the line 5 5 in Fig. 4.

A marks the valve-chamber, in which there is the ordinary throttling-valve. (Not shown.)

From this valve extends the valve-stem l). Connected with the valve-stein is the shoulder b, and from this extends the stem b2 to the governor-weights. The frame C is secured to the upper end of the chamberA by means of the plate C. It has the arm c, forming the box for the driving mechanism, and the upwardly-extending arm c', in which is arranged the bearing for the governor-carrier, and the arm c2, in which is arranged the centripetal element of the governor. The driveshaft D is journaled in the arm c and has on its inner end the drive-gear d. This meshes the gear e, which is ylixed on the carrier E. The carrier E is journaled in the arm O' and has at its upper end the two governorweights F F. At the upper end of the stem h2 is a cross-head b3. The link f connects this cross-head with the weights F.

Operating on the shoulder b is the lever G. The lever Gr is pivoted on the arm C2, the outer end of the lever being engaged by a bolt 71.. A spring II is arranged on this bolt Vand tensioned against the lever G and the adjusting-nut H. By adjusting the nut H the tension of the spring H may be varied, and thus the centripetal element of the governor adjusted. This part of the governor' operates as an ordinary governor. It will of course be understood that the stem l) instead of being connected with the ordinary throttling-valve may be connected with any governing device.

At the outer end of the armo is arranged a casingI. The disk D is iixed on the end of the shaft D and arranged within thecasing I. Extending from the casing I is' the flange I', having the bearing c'. The shaft J is journaled inthis bearing, and the drive-pulley J is fixed on this shaft. On the inner end of the shaft J is a disk J 2. This disk is arranged Within the casing I opposite the disk D. The disks J2. and D' are slightlyiconed, so that the elements on the surface of the disk lying in the same plane and at opposite sides of the axis are substantially parallel. Extending from the casing I is a lug 2', in which is formed a bearing for a trunnion K. An opening 7c is arranged at the inner end of this trunnion, and the sleeve L is made to slide in said opening. Journaled in said sleeve is a shaft M, on each end of which is a frictionroller fm. It will readily be seen that as the trunnion K is turned one of the frictionrollers m is brought into contact with the disk D', While the other end of the frictionroller is brought into contact with the disk J 2. It will also be observed that by shifting the position of the sleeve L in the opening 7c the relative position of the friction-rollers m to the axes of the opposing disks may be varied, so that the speed which is communieating from one disk to the other through the friction-roller may be varied. In the ,drawings it Will be noted that fthe friction-roller m is in contact with the disk J? near its outer periphery and with the disk D' near its axis. As arranged the shaft D will have a greater speed than the shaft J. By drawing the sleeve downwardly, however, the position of the roller m may be so changed that the shaft D may be given the same or a less speed than the shaft J. In order to keep the roller in contact with the disk with a constant pressure,

IOO

I provide the following mechanism: The arm K is fixed on the trunnion K. Extending from the bearing i is an arm '112, and extending between the arm K and the arm 2 is a spring N. It will readily be seen that the spring N tends to rock the trunnion K, and as the trunnion K rocks it throws the upper roller m into engagement with the disk J2 and the lower roller m into contact with the disk D. Extending from the sleeve are the lugs I, and pivotally secured to these lugs is a yoke O. Extending from the yoke O is the lever I). This lever is pivoted at p in the frame C. A stem P2 extends from this lever to a piston R. The piston R is arranged in the cylinder R', and the cylinder R' has a connection r below the piston with the receiver. An adjustable weightP is arranged on the lever, and a spring Q is arranged above the piston against the cap r. It will readily be seen that when the pressure in the receiver overcomes the tension of the `spring Q and the weight P the piston R is forced upwardly. This moves the sleeve upwardly, and this brings the friction-roller m in contact with the disk J 2 near its periphery, and the other roller in contact with the disk D near its axis, so that the speed of the shaft D, and consequently the governor-weights, is increased. This operating in the usual manner of centrifugal governors cuts off the steam and slows down the pump. As the receiver-pressure falls the reverse of this action takes place.

In a prior patent, No. 664,468, granted to me December 25, 1900, I have arranged a governor adapted for pumps wherein I vary by means of a pressure device the power of the centripetal element of the governor. Of course as the power of the centripetal element isvaried the speed of the pump is changed, so that indirectly the force of the centrifugal element is varied. This variation in the centrifugal element,which is consequent upon the variation iu the centripetal element in my former device, makes a compensating device desirable in the pressure device to adjust it to the changes in the centripetal force necessary by reason of the change in the centrifugal force. In the present device it will be noted that the centripetal element may remain constant, and if it is so arranged it will not form a disturbing element in the variation of the centrifugal element in effecting a change in the speed of the pump.

In the operation of the present device the weight may be adjusted so that with the spring-pressure a minimum receiver-pressure must be had before the piston will be actuated by the receiver-pressure. The sprin g increasing in tension with the movement of the piston .makes a slight variation necessary in the receiver pressure necessary to give a full movement of the piston. This change in spring-pressure for a given movement of the piston may be varied by adjusting the cap r', and the variation in receiver-pressure necessary to make a complete movement of the piston may be termed the permissible range in receiver-pressure. The diiference between the maximum and minimum pressure can be made very small, because through the action of the governor the full change in speed of the pump may be accomplished with a very small change in receiver-pressure. The governor will maintain a constant speed of the pump at any of the intermediate points in the movement of the piston that will provide for the necessary air-supply in the receiver. If the amount drawn from the receiver is constant, the governor will remain constant; but with the slightest change in the amount of air drawn from the receiver with a consequent change in the receiver-pressure there is a change in the position of the piston in the pressure device and a consequent change in the speed of the governor, so as to give to the pump a speed commensurate with the desired supply, and if the required supply remains constant in this new position the governor will remain constant in that position until a subsequent change. Additional adjustment, of course, can be made through the centripetal mechanism as with ordinary governors.

What I claim as new is*- l. In a governor for pumps, the combination with a centrifugal element; a driving means for actuating said element; mechanism arranged to operate upon said centrifugal element land means actuated by the pumped fluid for operating said mechanism to vary its force independently of the speed of the driving means.

2. In a governor for pumps, the combination of a centrifugal element; a centripetal element arranged to act in opposition to said centrifugal element; mechanism for varying the strength of said centrifugal element independently of any variation of strength in the centripetal element and means actuated by the pumped fluid for operating said mechanism.

3. In a governor for pumps, the combination of a centrifugal element; mechanism for automatically varying the speed of the centrifugal element and means actuated by the pumped fluid for operating said mechanism.

4:. In a governor, the combination of a centrifugal element; a centripetal element arranged to act in opposition to said centrifugal element; means acting independently of said centripetal element for automatically varying the strength of said centrifugal element and mechanism for actuating said means.

5. In a governor for pumps, the combination of a centrifugal element; a centripetal element arranged to act in opposition to said centrifugal element; means acting independently of said centripetal element for automatically varying the speed of said centrifugal element and mechanism for actuating said means. p

6. In a governor for pumps, the combina- IOO IIO

tion of a centrifugal element; a centripetal element acting in opposition to said centrifugal element; means acting independently of the centripetal element for automatically varying the speed of the centrifugal element and mechanism actuated by the pumped fluid for operating said means.

7 In a pump-governor, the combination of a centrifugal element; a speed-changing device for said centrifugal element; a pressure device arranged to be actuated by the pumped fluid; a counter -pressure device operating upon said pressure de vice with a varying pressure; and a connection between said pressure device and the speed-changing device.

8. In a governor for pumps, the combination with the centrifugal element; a speedchanging device for driving saidelement; a pressure device arranged to be actuated by the pressure of pumped fluid; and a connection between said pressure device and speedchanging device. y

9. In a governor for pumps, the combination of a centrifugal element; a speed-changing device; a pressure device arranged to be operated by the pumped fluid; a spring arranged against said pressure device; and a connection between said pressure device and the speed-changing device.

10. In a governor for pumps, the combination of a centrifugal element; a speed-changing device; a pressure device arranged to be operated by the pumped fluid; a spring arranged against said pressure device; means for varying the tension of the spring; and a connection between said pressure device and the speed-changing device.

11. In a governor for pumps, the combination of a centrifugal element; a speed-changing device arranged in the driving mechanism of said element; a pressure device arranged to be actuated by the pressure of pumped fiuid; a counter-pressure device arranged against said pressure device means for varying the force of said counter-pressure; and a connection between said pressure device and speed-changing device.

12. In a governor for pumps, the combination of a centrifugal element a disk for driving said centrifugal element; an opposing disk connected with the driving element of the governor; a friction-roller between said disks; means for varying the relative position of said roller on said disks for varying the` speed; a pressure device arranged to be ac tuated by the pumped fluid; and a connection between said pressure device and said friction-roller whereby said roller is actuated relatively to the axes of said disks by said pressure device.

13. In a governor for pumps, the combina ing-disk, J2; the trunnion between said disk;

the rolls, m m, and shaft, M; a bearing for said rolls carried by said trunnion; vmeans for shifting said roller in said trunnion; and means for holding said roller in engagement with said disk.

14. In a governor for pumps, the combination of the centrifugal element; the frictiondisk, D', for driving said element; the driving-disk, J2; the trunnion between said disks; the rolls, m m; the shaft, M; abearing for said rolls carried by said trunnion; means for shifting said bearing in said trunnion; means for holding said rollers in engagement with said disks; a pressure device arranged to be operated by the pumped fluid of a pump controlled by said governor; and aconnection between said pressure device and the bearing carrying said rolls, whereby said rolls are shifted by a movement of the pressure device.

the disk, D', for driving the centrifugal elei ment; the casing, I,-arranged.in the disk, D'; the ange, I', securedito the casing,I;

the bearing, t', onsaid ange, I'; the shaft,

J, arranged in said bearing; the-pulley,J', xed on said shaft; the disk, J2, fixed'on said shaft, said disks, J2 and D', having the bevel described the rollers, m m; theshaft,

M, connecting said rollers; the sleeve, L,.on

which said shaft is journaled; tlie trunnion K; a spring for exerting pressure on said trunnion ,to hold the rolls in contact with said disks; the pressure-cylinder, R', `having connection, r; the piston, R, in vsaid cylinder; the cap, r', on said cylinder ;the spring, Q, tensioned against the piston and said cap;

the stem, P2, extending from said piston; thelever, P, secured to said stem; the weight, P', on said lever; and the yoke, O, connecting said lever withthe sleeve, L.

VIn testimony whereof I'affix my signature in presence of two witnesses.

RUDOLPH CONRADER. Witnesses:

I-I. C. LoRn, R. F. LANZO.

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