US226257A - werotte - Google Patents

Description

3 Sheets-Sheet 2.

R. S. WEROTTE.

Governor. No. 226,257. Patented April 6,1880.

MPETERS. PfiOTD-LITMOGRAFHER. WASHXNGTON. D C

3Sheets-Sheet3. R. S. WEROTTE.

Governor.

Patented April 6,1880.

WITNESSES VLPETERS PHOTO-UYMOGRAPMER. WASHINGTON. n. 0-

Nrra 'rarns Frnwr Orrica.

RUDOLF SOHMITZ \VEROTTE, OF WEST BROMPTON, GREAT BRITAIN.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 226,257, dated April'fi, 1880. Application filed December 10, 1879. Patented in England March 10, 1879.

To all whom it may concern:

Be it known that I, RUDOLF SGHMITZ VVEROTTE, of est Brompton, in the county of Middlesex, Kingdom of Great Britain and Ireland, have invented new and useful Improvements in Governors for Steam and other Engines, and partly applicable for other purposes, of which the following is a specification.

My invention relates to an improved cataract governor, designed to afford a wide range of variation and adjustment in regard to the power given out by the instrument, its sensitiveness, and the increasing and decreasing the number of revolutions or movements of the prime mover, and to enable these adjustments to be readily efiected while the prime mover is at work.

In my improved governor a principal feature is the use of an improved multiple forcepump driven from the prime mover to be controlled, and discharging liquid into a chamber which supplies a cataract, the variations in the supply of liquid to which chamber, by acting on a hydraulic ram through it, control the prime mover.

My improved governor is arranged as follows: On a suitable shaft driven from the prime mover to be governed is fixed a series of pump cylinders or chambers, each fitted with a piston. These chambers may conveniently be formed ina cylindrical piece of metal, which I will call the pump-chamber cylinder or body. The piston-chambers are by the roration of the governor-shaft caused to revolve about their common center or axis. Reciproeating motion is imparted to their pistons, (it may be by a suitable cam or other arrangement,) and thus each piston is caused to alternately draw liquid from a lower of two chambers, which is open, to a tank, and force such liquid into an upper chamber provided with an adjustable outlet or outlets and communicating with a cylinder fitted with a ram or piston, which can be more or less loaded by Weights or springs, or by means of a hydropneumatic cylinder and adjustable reducingvalve arrangement. The upward extension One end of this bar is connected to the The other end is by a link connected with the throttle-valve, eX- pansioirgear, dam per, fire-door, or other mechanism for checking the speed of the prime mover.

It will be evident multiple pumps of theimproved construction hereinabove set forth may be employed for various purposes without the hydraulic cylinder and ram-as, for instance, for drawing and forcing or measuring water or other liquid or fluid.

Figure 1 of the drawings shows a longitudinal section of my improved cataract governor. Fig. 2 is an end view, and Fig. 3 a plan, of the same. Fig. 1 is a sectional plan taken in the line A B of Fig. 1. Fig. 5 is a cross-section in the line C D of Fig. 1. Fig. 6 is a cross-section, to a larger scale, of the pumpchamber cylinder or body, and shows, also, the anti-friction rollers and one of the tubular cams. Fig. 7 is an end view of the pumpchamber cylinder or body, and Fig. Sis an end view of the water-chamber block with the nut and disk or washer removed.

On a shaft, 1, driven by a wheel, 2, from the prime mover to be governed, is fixed the pumpchamber cylinder or body 3, in which the pump cylinders or chambers (five of which are here shown) are formed, each fitted with apiston, 4.. At one end of each of these cylinders or chambers is formed a slot, 5, which acts as a guide to a square piece, 6, formed on an extension of each of the pistons. From each of the pieces (iprojects a cylindrical part or axis, 7 upon which work anti-friction rollers 8 and 9.

10 and 11 are two tubular cams, connected together and to the bed-plate by bolts and nuts, as shown, between which cams the antifriction rollers travel, as in an annular campath.

12 is a chamber, communicating at l2 with a tank, 13, containing water. The chamber 12 and tank 13 are secured by bolts to the bedplate 22.

14 is an upper chamber, (hereinafter called the pressure or delivery chamber,) sepa 17 is a cylinder communicating with the upper chamber, 14, and provided with a ram or piston, 18, the rod of which ram or piston has jointed to its upper end a nut or part, 19, through which passes a screwed bar, 20.

21 is a link connecting one end ofthe screwed bar to the bed-plate 22. The other end of the screwed bar is connected by a link at 23 to the throttle-valve or other contrivance for check in g the speed of the prime mover.

24 is a handle for turning the screwed bar 20 to alter the distance between the center of the rod of the piston 18 and the center of the link at 23, thereby determining the length of stroke of the piston 18 which shall effect the closing of the throttle-valve or other regulation.

25 is a flanged pipe fitting loosely around the cylinder 17 and carried by a collar on the top of the piston-rod. The flange 25 at the bottom of the pipe 25, carries weights 26 to increase the load, as required, on the piston 18; or springs or an adjustable hydropneumatic piston with ad ustable pressure may be used in lieu of weights.

27 is a cup-leather or packing fitting around the enlarged end of the pump-chamber cylinder or body 3, which revolves close up against the face of the chamber-block.

28 is a disk or washer keyed onto the shaft or spindle 1, and screwed up tight against the chamber-block by means of the nut 29, so as to keep the pump-chamber cylinder or body3 well in contact with the face of the chamberblock.

30 is a shallow eccentric groove at the back of the chamber block, covered by the disk 28,

and serving the double purpose, first, of lubrieating the disk and the bearing of shaft 1 inside the block, and, second, of counteracting and balancing the pressure with which the pumpchamber cylinder or body 3 is pressed away from the pressure or delivery chamber 14 at its semicircular opening 14. 31 is a small hole through the wall of the pressure or delivery chamber, for the purpose of admitting fluid under pressure to the eccentric groove 30.

The operation of my improved governor is as follows: As the shaft 1 is rotated by means of the wheel 2, driven from the prime mover to be governed, it carries round with it the pumpehamber cylinder or body 8, with its cylinders or chambers and their pistons 4, which, by means of their anti-friction rollers 8 and 9, traveling round in the annular campath formed'cetween the two fixed tubular cams 10 and 11, are caused to reciprocate and alternately to draw water from the tank 13 through the lower or suction chamber, 12, and its semicircular opening 12 and force it through the semicircular opening 14 into the pressure or delivery chamber 14, where more or less pressure obtains, according to the load on the piston 18. If, by an increase of speed, the pump delivers more liquid into the pressure or delivery chamber 14 than can escape during the same time through the opening regulated by the adjustable valve 16, water accumulates under the piston 18 and forces it up, thereby operating the throttle-valve or other contrivance for eheckin g the speed of the prime mover. Similarly, when less liquid enters the chamber 14 than escapes in the same time past the valve 16, the volume of water under the piston 18 decreases and the piston falls under its load.

16 is an outlet for allowing the waterto escape by the valve 16 back into the tank 13.

The adjustments are effected in the following way: Given the resistance offered by the valve-gear or other regulating mechanism, (including friction of piston 18,) the load on the piston 18 must be slightly in excess of the total of such resistance. The area of opening of the valve 16 is then adjusted so that the pressure under the piston 18 balances the total load. If more work is thrown on the governor, the opening of the valve 16 must be further reduced, so as to increase the pressure in the chamber 14 according to requirement.

It will be obvious that multiple pumps constructed according to my invention may be employed in conjunction with suitable registering apparatus for measuring liquids and without the registering apparatus for drawing and forcing liquids and fluids for various purposes, the cams being appropriately arranged and the shaft 1 suitably driven-for example, as indicated in Fig. 1.

What I claim isa 1. The combination, with a series of chambers, arranged concentrically and revolving about a common axis, of piston-rods provided with anti-friction rollers, and fixed cams for imparting reciprocating motion to the piston, substantially as and for the purpose specified.

2. In a governor, the combination, with the revolving chambers, pistons provided with anti-friction rollers, and fixed cams, of a lower or suction chamber with an opening to a tank (or liquid-reservoir) and another opening opposite the lower revolving chambers, and an upper or delivery chamber with an opening opposite the uppermost revolving chambers, substantially as described.

3. In a governor, the combination, with the revolving chambers, pistons provided with anti-friction rollers, fixed cams, suction and delivery chambers, of a shallow eccentric groove, 30, formed in the back of the chamber-block, with a small hole, 31, and a disk or washer, 28, and nut 29, substantially as described.

4. In a governor, the combination, with the revolving chambers, pistons provided witho. The combination, with the revolving chambers, their pistons and upright cams, substantially as shown, and the delivery-chamber 14, of the chamber 16 and communicatingpassage valve 16, for regulating t-heliquid from the delivery-chamber 16 and the outlet 16, for escape of said liquid, all substantially as and for the purposes herein set forth.

6. In a governor, the combination of the revolving chambers, their pistons, suction and delivery chambers, cylinder 17, weighted or loaded piston 18, a nut or part, 19, connected to said piston 18, a screwed bar, 20, link 21, and handle 24, all arranged and operating substantially as described and shown, for the purpose specified.

\Vitnesses:

H. PAIGE, J. J. BROUGHAM, Both of? Whitehall Place, London, 8. W.

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