US680209A - Valve. - Google Patents

Description

Patented Aug. 6, I90l.

w. H. & n'. THOMPSON.

VALVE. (Application filed Aug. 3}. 1899.)

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(No Model.)

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N 0 s P M 0 H T um m H W Patented Aug. 6, I90l.

VALVE.

(Application fild Aug. 31, 1899.)

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(No Model.)

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w. u. & n. THOMPSON.

VALVE.

(Application filed Aug- 31, 1899.)

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Patented Aug. 6, I90I.

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' UNITED STATES v PATENT OEEIcE. I

WILLIAM HENRY THOMPSON AND ROBERT THOMPSON, OF LONDON, ENGLAND.

VALVE.

'SPECIFIGATION formingpart of Letters Patent No. 680,209, dated August 6, 1901. hpplioation filed August 31,1899. Serial No. 729,100- NO model-l To all whom it may concern.-

Be it known that we, WILLIAM HENRY THOMPSON and. ROBERT THOMPSON, citizens of Great Britain, residing at 155 Fenchurch street, in the city of London, England, have invented certain new and useful Improvements in Valves; and we do hereby declare the following to be a full, clear, and exact des'cription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In the accompanying drawings, Figure 1 represents a vertical side elevation, part in section, of one form of the valve and its operating mechanism. Fig. 2 represents a similar view of the valve and operating mechanism forming a modification of ourinvention. Fig. 3 represents a view of the same in end elevation, partly broken away.

Similar letters referto similar parts.

In carrying our invention into practice we arrange the body A or casing of the valve, hereinafter called the body, with an aperture B on its top surface, hereinafter called the top aperture. Assuming the valvewith the handwheel uppermost, of suitable form for receiving and holding the stem of the valve-cup, as hereinafter mentioned, we arrange the bottom surface with an aperture 0, hereinafter called the bottom aperture,

for the passage or withdrawal of the valvecup, valve, and spindle, and parts or surfaces connected or combined therewith, as hereinafter mentioned. Said bottom aperture C is screwed or prepared for the reception of a screw or other'suitable cover D, by which it is sealed when the valve is in operation. We form or prepare the part or partition E of the body, usually prepared as for the valve-seating, with a suitable surface to receive and hold in position or form a joint or union with the aforesaid valve-cup, as

hereinafter mentioned, and such surface is hereinafter called the valve-cup seating F.

The valve-cup G is a hollow casting or part, preferably made in the form of a cup or bell, which, assuming it to be in an inverted position,has a rim or shoulder formed around its mouth or bottom end or at or near its largest circumference. The upper surface of such rim is prepared so as to form a suitable joint with the valve-cup seating F when drawn or set up to it, as hereinafter mentioned. The bottom surface of the said rim H and valvecup G is formed or prepared as the valveseating I, from which the cup G, extending upward, terminates with the hereinbeforementioned stem .I, formed witha hole through it into the cup for the passage of the valvespindle K, the said hole being formed with a suitable number of right or left hand screwthreads along part of its surface, so as to form a nut for the screw cut on K, which spindle is connected at' its lower end with the valve in a suitable manner, while its upper end passing through the hole extends beyond or above the stem J a sufficient distance for its proper connection with the hand-wheel L, by which it and the valve are operated by turning the spindle, so as to work its screw in the nut in the usual manner. The escape of the fluid around the spindle is prevented by a gland-nut M, containing packing and working on a screw formed on the stem J, which screw is of such a length as to enable it not only to be employed as a glandscrew, but to be utilized as a means for drawin g the upper surface of the rimH of the aforesaid valve-cup G into contact with the valvecup seating F by means of a nut N, hereinafter called the second nut, run or worked on the same screw, so as to precede and be worked the valve-spindle in advance of the gland-nut M untilit bears and gland-nut M and gland-screw on stem .I 5

with second nut N, hereinafter called the combination of wearing parts, in proper Working relation with the body of the valve. If found desirable, under some conditions a separate screw may be formed on the stem to loo receive the second nut instead of utilizing the gland-screw. Suitable apertures P are formed in the valve-cup G, opening into outlet part or division of the body, so as to admit of the passage of the fluid from the inlet division or partition of the body through they passage of the stem J through the top apertu re 13. The combination is replaced by passing it up through the bottom aperture 0 until the upper surface of the valve-cup rim H is in contact with the valve-cup seating F, and the stem J projects through the top aperture when the nuts and hand-wheel are replaced and also the screw-cover, and the valve is then in working order.

The valve may be composed of renewable seating or parts, as may be found expedient in the hereinbefore arrangement. The force of the fluid is directed on the back of the' valve and the bottom surface of the valvecup, so that when the valve is closed both the valve and the valve-cup are forced onto their seatings with more or less force as the pressure rises and falls, while the pressure being entirely registered by the said seating the valve-spindle and its screw and nut are relieved from the strain of the constant pressure, the force of which also acts on the valvecup rim, holding it up to the valve-cup seating, so that it does not depend entirely on the pull or force exerted by the second nut on the gland-screw for the pressure with which it contacts with the seating. Suitablev packing may be employed between the various surfaces. A suitable compression-spring may be interposed between the valve and the under side or other suitable part of the valve-.

cup, so as to keep the valve-cup and its rim aforesaid up to the valve-cup seating by its pressure in the absence of the fluid-pressure. The said spring may be arranged in such a manner as to be compressed by the pressure of the fluid in the action of closing the valve and the force acquired by such compression utilized in assisting the hand of the operator in opening the valve, or the said spring or its action may be similarly employed in any modification and arrangement of the valvecup, valve, or spindle, which spindle may also be arranged with the necessary shoulder or shoulder-surfaces worked or provided with,

suitable bearing-surfaces for supporting or resisting the thrust of any of the forces acting on it.

The valve may be adapted for automatic action, as shown by Figs. 2 and 3, bydispensing with the internal screw-threads formed in the-stem J and the correspondingpthreads on the valve-spindle K, so as to leave the spindle free to reciprocate or to be operated by a coiled or clock spring by connecting the part of the valve-spindle extending beyond the gland-nut with a suitable rack Q and pro viding suitable bearings R or supports on the body A of the valve for carrying a spindle S, arranged or formed with a pinion T or spur-wheel, the said bearings being so ar ranged as to bring the pinion T into gear or proper working relation with the rack Q. A coiled or clock spring is connected at its central endU with the spindle S and at its outer end V with the case or cylinder in which it is contained, hereinafter called the spring case W, which case W takes its bearing and works on thespindle hereinafter called the pinion-spindle S, and may be turned by the direct application of the hand and held in position by a suitable pawl-and-ratchet Wheel formed or connected with it, or when the power required for winding up is too much for the direct application of the hand or the necessary adjustment of the spring too in flnitesimal forit to be regulated by the pitch of the ratchet-teeth we form or arrange the spring-case W with a worm-wheel X, which We operate by a suitably-arranged Worm Y, connected with and operated by a suitable handle or hand-wheel Z. The coiled spring U V is coiled or wound in the direction necessary forturning the pinion-spindle S and pinion T, so that it will work the rack upward or in the direction necessary to pull or force the valve 0 against the opposing force of the fluid, so as to control its passagepast or through the valve in such a manner that it passes from the valve with its force reduced in proportion to the adjustment of the spring or force it is exerting on the valve. The spring-case may be stationary and the spring wound and set by-operating and holding the pinion-spindle S by a suitable application of ratchet-wheel and pawl or Worm-Wheel and worm, or other suitable mechanism or devices may be employed for winding and adjusting the force of the spring, or the spring force may be communicated to the valvespindl e by means of an arrangement of a lever or. levers or other suitable mechanism.

' The aforesaid arrangement and combination of spring and mechanism or parts by which it is Wound or, adjusted, or its power utilized may be arranged for controlling any Valve or arrangement of valve or valves hereinbefore mentioned, or any other form of arrangement of valve for which such spring and mechanism or parts may be adapted or applicable.

Two or more of the aforesaid valves and valve-cups orseatings and springs or mechanism and parts inwhich they are controlled or set in position may-be grouped, so that the fluid may pass from one to the other in order to sustain a more uniform delivery or passage of the fluid.

The application or arrangement of the here- 'inbefore-mentioned arrangement or combination of wearing parts may be modified or Varied according to the design of the valve body or casing or arrangement of inlet and outlet passages, screwed ends or flanges, or other provision for connection with the piping or apparatus to which the valve may be applied.

What we claim, and desire to protect by Letters Patent, is-

1. In a Valve, the combination of a valvecasing, a valve-cup seating in said casing, a perforated valve-cup bearing against said seating, a valve closing the open bottom of said cup, a hollow stem formed by an upward extension of said cup passing through an aperture in said casin g and screw-threaded externally,- a spindle to which said valve is attached passing up through said hollow stem and movable therein, a gland-nut provided with screw-threads and adapted to screw on the top of the said hollow stem, means for adjusting and holding said valve-cup in position, means for operating said valve, and an opening with movable cover in the bottom of said casing for withdrawing the valve, sub-' stantially as set forth.

2. In a valve, the combinationof a valvecasing, a valve-cup seating in said casing, a perforated valve-cup bearing against said seating, a valve closing the open bottom'of said cup, a hollow stem formed by an up ward extension of said cup passing through an aperture in said casin g and screw-threaded externally, a spindle to which said valve is attached passing up through said hollow stem and movable therein, a gland-nut provided with screw-threads and adapted to screw on the top of said hollow stem, a second nut below the said gland-nut engaging the screwthreads on said hollow stem and adapted to adjust and hold said valve-cup in position, means for operating'said valve, and an opening with movable cover in the bottom of said casing for withdrawing the valve, substantially as set forth.

3. In a valve, the combination of a casing, a cup seated in said casing, a valve seated on the bottom of said cup, a hollow stem formed by an upward extension of said cup and passing through the top of said casing, a valvespindle passing through saidstern, means for packing and adjusting said valve, and sprin gactuated mechanism for operating said valvespindle, substantially as set forth and for the purpose stated.

4. In a valve, the combination of a casing, a cup seated in said casing, a valve seated in said cup, a hollow stem formed by an upward extension of said cup and passing through the top of said casing, a valve-spindle pass in g through said stem, means for packing and adjusting said valve,- a rack on the upper part of said spindle, a pinion engaging said rack, a spindle on which said pinion is mounted,

supports attached to said casing on which.

said spindle has its bearings, a hollow drum mounted on said spindle,- and a coiled spring within said drum adapted to revolve said spindle by its expansion, substantially as set forth.

5. In a valve, the combination of a casing, a cup seated in said casing, a valve seated in said cup, a hollow stem formed by an upward extension of said cup and passing through I the top of said casing, a valve-spindle passing through said stem, means for packing and ad justing said valve, a rack on the upper part of said spindle, a pinion engaging said rack, a spindle on which said pinion is mounted, supports attached to said casing on which said spindle has its bearings, a hollow drum mounted on said spindle, a coiled spring within said drum adapted to revolvesaid spindle by its expansion, a worm -wheel mounted on the circumference of said drum, a worm mounted on said supports and adapted to engage said worm-wheel, and means for turning said worm, substantially as set forth. 6. In a valve for controlling the passage of fluids, having a spindle or operating connection to its moving valve, means for operating said valve-spindle or operative connection consisting of a coiled spring, mechanism whereby the coiling or uncoiling action of the spring may automatically operate the valve, and gearing for putting the said spring under adjustable tension substantially as described.

In testimony whereof we aifix our signatu res in presence of two witnesses.

WILLIAM HENRY THOMPSON. ROBERT THOMPSON. Witnesses:

F. W. GoLBY, FRED. O. HARRIS.

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