US608197A

US608197A - harrison

Info

Publication number: US608197A
Authority: US
Publication date: 1898-08-02
Anticipated expiration: 1915-08-02

Description

No. 608,37,` Patented Aug. 2, |898. w. F. HAnmsoN.

THBOTTLE VALVE.

(Application led Sept. 80, 1897.)

2 Sheets-Sheet l.

No. 608,l97. Patented Aug. 2, |898.

W. F. HARRISUN. l THROTTLE VALVE.

(Application med Sept. 30, 1897.)

rre

`WILLIAM F. HARRISON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE PRATT da CADY COMPANY, OF SAME PLACE.

THRoi'Tris-VALVE.`

SPECIFICATION forming part of Letters Patent No. 608,197, dated August 2, 18981. Application nea scptemtr 30,1897. seh-.i1 No. 653,582. (No modem To all whom it may concern:

Be it known that I, WILLAM F. HARRISON, a citizen of the United States, residing-at Hartford, in the county of I -Iartford and State of Connecticut, have invented certain newV and useful Improvements in Throttle-Valves, of which the following is a specification.

This invention relates to those throttlevalves which are arranged so that they may, from the immediate vicinity or from distant points, be set in operation and caused to stop the iiow of fluid in the supply-pipes withwhich they are connected.

The object of the invention is to provide a simple, inexpensive, and durable valve of this nature having a stop-disk which when the spindle is turned to open the valve will first move slowly, and then after the pressure of the fluid is relieved will move rapidly and open very quickly to a position where it will be held by a catch until released, and when the catch is tripped will be moved very rapidly in a reverse direction by automaticallyoperating closing means which act quickly and shut the valve tightly.

The embodiment of the invention illustrated in the accompanying drawings has a valve-disk connected With a spindle thatis so supported as to have imparted when rotated for opening or closing the valve a longitudinal movement which results from the joint actions of several threaded parts that are brought into combined operationV by their peculiar engagement, the spindle when the valve is open being held from rotation by a catch that is adapted to be tripped byl mechanism operated from near at hand or from distant points, as the emergency arises, and when released being rotatedautomatically by mechanisms in whichl power for this purpose is stored by the act of rotating the spindle for opening the valve, as more particularly hereinafter described, and pointed out in the claims.

Figure 1 of the views shows a throttle-valve which embodies the invention, parts of this i figure being cut in section to illustrate the construction. Fig. 2 shows a view of the hand-wheel end of this valve. Fig. 3 shows a section taken on plane -indicated by the Fig. 4 shows a broken line X X of Fig. 1.

detail section of a portion of a valve with a valve-disk of different construction.

The body 1 of the valve maybe cast of iron, brass, or any other suitable metal to any approved shape, with ilanged or screw-threaded ends, as desired, for attachment to the pipes of the n system with which it is to be used. Thevalve-seat may be formed in the interior of the body in any convenient manner, that 4shown being formed on the edge of a ring 2,

that is threaded and screwed into a threaded recess in the walls of the body on one side of the disk-chamber, which is preferably provided with disk-guiding ribs 3.

A cover 4t is secured to the open end of the body in the customary manner, and throughv by casting a suitable fine metal intothe in- `terior of the end of the baser-metal frame.

Supported by this bushing is an outer sleeve 9. This outer sleeve is provided with exterior threads that iit the threadsin the bushing S, and `itis also provided with interior threads that iit exterior threads on anr inner `sleeve 10. The inner sleeve 10 also has interior threads thatv fit and mesh with threads on a portion of the spindle 5. This inner sleeve 10 bears adcollar 11, which has outwardly-projecting lugs 12, that move between ribs 13, formed on the frame, so that the sleeve 10 is held from rotation as it is reciprocated. The outer sleeve 9 supports a collar 14C, provided with outwardly-extending

lugs

15 and 16, Fig. 1, and 17, Fig. 2. Secured to the end of the spindle is a handwheel 18, and attached to this `is a drum l), around which is wound acord 20, that supports a weight 21. Vhen the hand-wheel is turned in one direction, the cord is wound up and the weight lifted, `and then -when the hand-Wheelwis free the Weight will unwind the cord and rotate the hand-Wheel and connected spindle in the opposite direction. 4It desired, of course, this power can be obtained by means of a spring instead of the cord and weight shown.

Projecting inwardly from a part of the handwheel is a lug 22. In a chamber in the walls of the Vframe is an outwardly-thrust spring,- bolt 23, and engaging with this is a lever 24. The outer end of this spring-bolt projects into the path of the lug 17 except when it is drawn inwardly by a movement of the lever 24.

When the hand-wheel is turned to open the valve, the spindle rotates and simply travels outward with a movement that is determined by the pitch of its own thread that meshes with the interior thread of the inner sleeve 10 until the lug 22 on the hand-wheel engages with the lug 15 on the collar 14. Then further rotation of the hand-wheel in the same direction with these lugs 22 and 15in engagement rotates the outer sleeve 9, with which the collar 14, bearing the lug 15, is connected. The rotation of the outer sleeve 9 causes that sleeve to travel outward with a movement that is determined by the pitch of its exterior thread that engages with the interior thread in the stationary bushing S at the end of the frame. This longitudinal outward movement of the outer sleeve S) carries out the inner sleeve l0, and the rotation ot the outer sleeve 9 also, through the meshing of its interior thread, causes the inner sleeve 10, that does not rotate, to be moved outward still faster. Ot' course as the inner sleeve 10 moves outward it carries the spindle bodily, and this, addedto the natural travel of the spindle incident to the pitch of its own thread, causes the spindle to be moved longitudinally very fast and the valve-disk to be drawn away from the seat, so as to open the valve Very rapidly.

When the valve is fully opened, the lug 17 is in position to be engaged by the springbolt 23, so that the collar 14 and outer sleeve cannot be rotated in a reverse direction until the bolt is withdrawn from in front of this lug. The rotation of the hand-wheel winds up the weight-cord or spring, as the ease may be, and stores up power for moving the parts in a reverse direction. NVhen the hand is removed from the hand-wheel after windin g up,

the hand-wheel will rotate backward freely under the influence of the weight or spring vuntil the lug 22 moves from contact with the lug 15 into contact with the lug 16 in position by engagement with that lug when the bolt is withdrawn to rotate the collar 14 and sleeve 9, so as to close the valve. This initial movement causes the spindle to travel inward the distance it iirst moved outward under the pitch of its own thread in the sleeve 10, so that when the catch is released and the parts are rotated by the weight the disk will be carried back close against the seat and the valve tightly shut. The trip-lever can be operated by hand or by a cord or wire leading to any distant locality, or by electrical or other common means that are employed for moving tripping devices and which do not form a part of this invention.

This quick-operating mechanism may be applied to a small or relief valve attached to a larger valve, as shown in Fig. 4. In this case the small valve-disk 25 is drawn from its seat on the large valve-disk 26 by the initial rotation and outward traveling of the spindle under its own thread. This opens the valve, so that a portion of the pressure on the large disk is relieved, and then when the threaded sleeves commen ce to draw the spindle rapidly the parts so engage that the large disk is drawn quickly from its seat. In closing this form the small disk will be shut against its seat by the rotation of the spindle when the valve is open and the opening power is removed from the hand-wheel; Then when the' catch is tripped the two disks will move together very rapidly and shut the valve tightly.

A valve embodying this invention can be opened very slowly when the disk is subjected to pressure, and then when the pressure is relieved can be opened very rapidly. This valve can be arranged so as'to be automatically closed from distant points when an emergency, like an accident to an operative or breaking of machinery, occurs and requires that the engine be stopped at once, and when this valve thus arranged is tripped it will act so quickly that the fluid in the supply-pipe will be almost instantly cut off and the engine stopped. The mechanism of this valve is simple and inexpensive to manufacture, not liable to get out of repair, positive in operation, and always ready for action.

I claim as my invention- 1. A throttle-valve having a body, a Valvedisk within the body, a spindle connected with the disk, a sleeve with a thread fitting a thread on the spindle whereby longitudinal movement is imparted to the spindle when the spindle is rotated, and a connection between the spindle and the sleeve whereby the sleeve is also given a longitudinal movement when the spindle is rotated, substantially as specified. I

2. A throttle-valve having a body, a valvedisk within the body, a spindle connected with the disk, an inner sleeve with a thread fitting a thread on the spindle whereby longitudinal movement is imparted to the spindle when the spindle is rotated, an outer sleeve connected with the inner sleeve, and a connection between the spindle and the outer sleeve whereby the inner sleeve is also given a longitudinal movement when the spindle is rotated, substantially as specified.

3. A throttle-valve having a body, a valvedisk within the body, a spindle connected with the disk, an inner sleeve with a thread fitting a thread on the spindle, an outer sleeve connected with the inner sleeve, and means for rotating and also for moving longitudinally the outer sleeve when the spindle is rotated, substantially as specified.

4. A throttle-valve having a body, a valve- IOO IIO

disk Within the body, a spindle connected With the disk, an inner sleeve With a thread fitting a thread on the spindle,an outer sleeve with a thread fitting a thread on the inner sleeve, and means for rotating and moving longitudinally the outer sleeve when the spindle is rotated, substantially as specified.

5. A throttle-valve having a body, a valve-` disk Within the body, a spindle connected with the disk, an inner sleeve With a thread fitting a thread on the spindle, an outer sleeve with a thread fitting a-thread on the inner sleeve, means for rotating and moving longitudinally the outer sleeve, and a trip device for automatically restraining the rotation of the outer sleeve, substantially as specified.

6. A throttle-valve having a body, a valvedisk Within the body, a spindle connected with the disk, an inner sleeve With a thread fitting a thread on the spindle, an ou ter sleeve with a thread fitting a thread on the inner sleeve, a hand-Wheel connected With the spindle, and lugs connected with the hand-Wheel and with the outer sleeve arranged to engage When the hand-Wheel is rotated, substantially as specified. Y

7. A throttle-valve having a body, a valvedisk Within the body, a spindle connected with the disk, an inner sleeve with a thread fitting a thread on the spindle, an outer sleeve with a thread fitting a thread on the inner sleeve, a hand-wheel connected with the spindle, lugs connected With the hand-Wheel and with the outer sleeve arranged to engage When the hand-Wheel is rotated, and a catch connected With the frame and arranged to temporarily engage a lug connectedwith the outer sleeve, substantially as specified.

8. A throttle-valve having a body, a valvedisk within the body, a spindle connected with the disk, an inner sleeve with a thread 9. A throttle-valve having a body, a valvedisk Within the body, a spindle connected with the disk, an inner sleeve With a thread fitting a thread on the spindle, an outer sleeve With a thread fitting a thread on the inner sleeve, a hand-Wheel connected with the spindle, lugs projecting from the hand-Wheel and from a part connected With the outer sleeve and arranged to engage When the hand-Wheel is rotated, a drum connected with the hand- Wheel, means for rotating thel drum, and a catch for temporarily holding the drum against rotation, substantially as specified.

lO. A throttle-valve having a body, a main valve-disk Within the body, a supplemental valve-disk mounted upon the main valve-disk e and adapted to have a small motion independently thereof, a spindle connected with the supplemental disk, a sleeve witha thread fitting a thread on the spindle whereby longitudinal movement is imparted to the spindle When the spindle is rotated, and a connection `between the spindle and the sleeve whereby the sleeve is also given a longitudinal move- `ment When the .spindle is rotated, substantially as specified.

WILLIAM F. HARRISON.

Witnesses:

II. R. WILLIAMS, Jos. A. SWIFT.