US396206A - Hydraulic valve - Google Patents

Description

(No Model.) 4 Sheet-Sheet 1:

T. W. HEERMANS.

HYDRAULIC VALVE.

No. 396,206. Patented Jan. 15 1889.

N PETERS, Phulo-Lnnognpher, Wilmington. DC.

(No Model.)

Elm 396,206.

P W m 4 Sheets-Sheet 2. T.'W. HEERMANS.

HYDRAULIC VALVE.

Patented Jan. 15, 1889.

(No Model.) 7 4 SheetsSheet 3.

T. W. HEERMANS.

HYDRAULIC VALVE.

WW I

(No Model.)

4 Sheets-Shet 4.

T. W. HEERMANS.

HYDRAULIC VALVE.

Patenteddwwl er. Washingwm D. C.

' U ITED STATES,

PATENT rricn.

THADDEUS IV. HEERMANS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CRANE ELEVATOR COMPANY, OF ILLINOIS.

HYDRAULIC VALVE.

SPECIFICATION forming part of Letters Patent No. 396,206, dated January 15, 1889.

Application filed June 22, 1888. Serial No. 277,904. (No model.) I

To all whom it may concern.-

Be it known that I, THADDEUS W. HEER- MANS, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Hydraulic Valves, of which the following is a specification.

My invention relates to the class of valves in which the main valve is actuated by the To pressure of the water or other motor fluid, the operation of the latter upon the main valve being controlled by an auxiliary or pilot valve, the auxiliary or pilot valve being Shifted by any means suited to the situation in which it is used. In valves of the class named a piston-valve or its equivalent has been used for a main valve, and has been so arranged that the exhaust on the one hand or inlet on the other was opened as the valve was moved to one side or the other of its central position. It is evident, however, that a single direct seated valve cannot control both theinlet and exhaust, and therefore the purpose of my in vention is to so combine two direct-seated valves that they may be operated in a practical manner by a single auxiliary pilot-valve, thus combining the quickness and freedom of action of the direct-seated valve with the wellknown advantages of the use of a pilot-valve,

0 while preserving the connection between the main and pilot valves, so that the latter valve is closed by the movement of the main valve when the desired amount of opening is attained. g

3 5 I have designed my val vo chiefly foruse in connection with hydraulic elevators, and the pilot-valve in such a case is shifted by the attendant upon the elevator-car through the illtervention of any of the devices known in this art. I prefer, however, some of the devices which will permit the attendant to control positively the amount of movement imparted to the pilot-valve irrespective of the movement of the car, of which devices United States Letters Patent No. 317,202, granted May 5, 1885, to George ll. Reynolds, shows one type.

My invention consists in the parts and combinations hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation, the inlet and exhaust valves both being closed. Fig. 2 is a side view, the casingbeing broken away and the inlet-valve being raised. Fig. 3 is a Vertical central section. Fig. 4 is a vertical cross-section on line .r 00, Fig. 3. Figs. 5, 6, and 7 are sections of the auxiliary or pilot valve, showing it in various positions correspondin g to the different positions of the main valve shown in the preceding figures. Fig. 8 shows a safety-weight applied to the auxiliary valve. 6o

2, Figs. 1 and 2, is the valve-casing. 3 is the inlet and 4 the exhaust passage, and 5 the opening leading to the cylinder. .Partitions 7 and 8 divide the space within the easing into three parts corresponding to the passages just named, and valves 9 and 10 govern the communication of the inlet and exhaust passages, respectively, with the cylinder-passage. As the valves 9 and 10 are alike, only one need be described. Connected to the stem of L valve 9 is a piston, 11, which moves in the cylindrical part 12 of the casing 2. The piston is exposed to the same pressure of water as the valve 9, and is of somewhat greater area. A cylindrical extension, 13, of the valve 7 5 9 projects through the casing 2, and a cupped leather or other water-tight joint at 15 prevents leakage around the same. The cylindrical extension 13 is about the same diameter as the valve-seat and valve 9, so that the bal- 8o ance of pressure between the valve and its piston 11 shall be nearly the same whether the valve be open or shut. A bolt, 6, extends from'end to end and holds all. the parts of valve 9 together.

From the parts of valves 9 and 10 outside the case 2 project the studs 11; and 17, upon which the til tin glcver 18 is hung. The leverl 8 carries a stud, 19, out of line with the other two studs 16 and 17. The lever 18 is here shown as a ring; but any other form would suffice which would include the three points 16, 17, and '19. One of the studs 16 and 17 must work in a slotted bearing, for obvious reasons. The lever21 (which I call a floating lever because in operation it shifts bodily from side to side, and it may occupy innumerable intermediate positions) has a slot, 20, in its upper end, in which the stud 19 may move. The opposite end of lever 21 is pivoted to the crank-arm 24: of the I00 pilot-valve 25. At an intermediate point, 34, of its length the lever 21 is connected by a link, 23, tothe rocker-arm 22, the last-named being placed by any suitable gear, as before mentioned, under the control of the operator or attendant.

The stru ':ture of the valve 25 will appear from Figs. 4, and 5.

Aninlet-pipe, 2n, admits water under pressure to the side of the valv(. -(.-asing 25, and an exhaust-pipe, 27, is attached to the bottom of same.

The plug 2% of the valve is hollow and its interior is tilled with water from the pipe 20. Its sides are grooved at L") and. 130, and it does not extend to the bottom of the valve-ease, so that a el ear passage is afforded from its grooved sides to the exhaust-pipe 27. Ports 3.1 and 2-32 in the side of the valve-easing lead to the spaces beneaththe pistons ot the main valves and 9, respectively. (See, also, Figs. 2 and 33.) The spaeingot' the ports 31. and IE2 is sueh that water cannot be admitted to either port without exhausting the water [from the other, as will hereinafter appear in the deseription of the operation. Upon the hub end of the crank-arm 2t are hooked proieetions 233 ii whieh, by the revolution ot' the eianlt-arm 24, are brought into the line ot. travel of the projecting end of the stud Ei-t, thereby limiting the movement of the floating lever 2i and the crank-arm 2t.

In Fig. is shown a w ight, 35, pivoted to a lug, $30, on the valveeasing 2:), and eoinieet ed by a stud and slot, 37 and 238,1o the erank arm 24. The purpose of this wi ight is to bring the pilot-valve to its central position, and thereby close both main valves in ease any of the connections operating the valve should break.

The operation is as follows: When the rocker-arm '32 is in its middle position, as shown in full lines in Fig. 1, the pilotvalve is also eentral, as shown in sect ion in Fig.

It the roeker-a rm is moved to the position shown in dotted lines in Fig. ],the1 ilotvalve will. assume the position shown in lii ti, and water will be admitted beneaththepision 11 of valve t), which will begin to rise. The rise of valve J will carry the lever 18 in. the direction indicated by the arrow, Fig. 2, thereby causing the floating lever to turn on the pivot 3.4. at the end. of link it as a fulernin, its lower end moving in the direetion ot' the arrow at the bottom. The attached crankarni 2t gradually closes the pilot-valve 25, and by the time the main valve has reaehed the position shown in Fig. 2 the admission of water beneath the piston 12 has been out ot'l' and the main valve brought to rest.

It is evidmit that it less than its full opening is given thepilot-valve it will be closed by a small rise of the main valve, the degree ot sueh opening being thus eompletely in the control of the o i '-rator.

Throwing the roeker-arm in the opposite direction to that just deseribed eauses the pilot-valve to assume the position shown in Fig. 7 and allow the water to escape from beneath the piston of valve 51, the greater area of said piston eoinpelling the valve to seat it self.

It is obvious that the rising-andfalling movement of the valves 9 and 10 eouldbe made to operate upon the 'iilota'alve through a set of lovers differing in arrangement from those shown .in the drawings. Many sueh arrangements will occur to the skilled nieehanie; but the essential feature ot' my invention is the connecting of two direct-seated valves to the pilot-valve in sueh a manner that while they are tree to move setun-ately from each other they are nevertheless mutually dependent upon each other, and are governed by a single nlet-valve, which li'unetiou is essentially dependent on the lever 18, whieh is pivoted to both main valves, eaeh pivot aetiug in turn as a tuleruin while the opposite valve is in motion.

1 claim- 1. The combination, in a hydraulie-valve apparatus, of two valves, a leveetulerum to both said valves, a pilot-valve, and a floating lever having a movable tulerum and operating the pilot-valve and eonneeted to the firstnamed lever, substantially as deseribed.

The eombination otT two valves, one eontrolliug the inlet and the other the exhaust opening, pistons eonneeted to said valves, a lever tulerumed to both said valves, a pilotvalve etmtrolling the admission of water to said pistons, and a floating lever having a movable tulerum and operating said pilotvalve and connected to the tirstaianied lever, substantially as described.

3. The eombinati on of the easin 2, divided by the partitions 7 and 9 into three chambers eoinnuinieating with the inlet 3, eylinderopening 5, and exhaust -il-, respectively, the valves .1! and 10, seating in said partitions, the pistons 11, eonneeted to said valves, the pilot-valve admitting water to saidpistons, the lever '19, eonneeted to pistons 0 and. 10, the floating lever 21, oonneeted to the lever 18 and the valve-arm. 24-, and having the movable t'uleruni ll, substantially as de scribed.

4:. In a hydraulic motor for elevators, the eoniliinatioinwith the inletaiul exhaust valves and fluidanotors for operating them and an oseillatin pilot-valve tor (amtrollin g the How of fluid to said meters, of a lever having suitable pivoted eonneet-ion s with. said. inlet and exhaust valves, said. connections serving alternately as tulerums tor the lever as the valves are moved, a floating lever pivoted at one end to the piston-valve to oseillate it and eonueeted at its other end to the first-named lever by a pivotal emmeetion constructed to permit an independent longitudinal movement 01: said floating lever, and a etmneetingrod to which power is applied, attached to the floating lever between the ends of the floating lever and engaging stops connected to the nlet-valve and the floating lever to limit their relative nu'wenients, substantially as d esmibed.

\Vitnesses: .tHAhhEUS W. ltEllltMANS.

.T. t. 'Vmintm, P. ill. T. Mason.

It is hereby certified that in Letters Patent N 0. 396,206, granted January 15, 1889, upon the application of Thaddeus W. Heermans, of Chicago, Illinois, for an improvement in Hydraulic Valves, an error appears in the printed specification requiring v correction, as follows: In line 86, page 2, the compound Word lever-fulcrum should read lever fnlernmed; and that the Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Oifice.

Signed, countersigned, and sealed this 22d day of January, A. D. 1889.

[s'EAL] D. L. HAWKINS,

Assistant Secretary of the Interior. Ooun tersigned BENTON J. HALL,

Commissioner of Patents.

Correction in Letters Patent No. 396,206.

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