US928663A - Hydrant. - Google Patents

Hydrant. Download PDF

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Publication number
US928663A
US928663A US1908444701A US928663A US 928663 A US928663 A US 928663A US 1908444701 A US1908444701 A US 1908444701A US 928663 A US928663 A US 928663A
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Prior art keywords
spindle
valve
nut
screw
hydrant
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Expired - Lifetime
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George W Johnston
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Chapman Valve Manufacturing Co
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Chapman Valve Manufacturing Co
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Priority to US1908444701 priority Critical patent/US928663A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008Mechanical means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8158With indicator, register, recorder, alarm or inspection means
    • Y10T137/8225Position or extent of motion indicator

Definitions

  • n B GRAHAM ca. womumucland, WABHI mvrrnn srar ns PATENT orrron GEORGE W. JOHNSTON, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO CHAPMAN VALVE MANUFACTURING COMPANY, OF INDIAN ORCHARD, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.
  • My invention relates to improvements in valves of the inside-screw variety, in which provision is made for imparting to the valve spindle a limited amount of longitudinal movement without, however, taking away as the chief factor in opening and closing the valve proper the means whereby said valve is operated by therotary motion of said spindle after the manner of inside-screw valves, with the result that the spindle is converted into an indicator which shows the position of the valve and, what is of far greater importance, has a secure connection at the base eX- cept when the valve is wide open, the invention being particularly designed for and adapted to fire-plugs or hydrants.
  • the primary object of my invention is to produce a hydrant in which the valve will remain closed regardless of. any injury which the exposed part of such hydrant may sustain, provided the valve be closed at the time the accident occurs.
  • a further object of my invention is to utilize the valve spindle as an indicator of the position of the valve, the ordinary insidescrew construction not permitting this to be done.
  • Figure 1 is a sectional view of a hydrant embodying my invention, showing the valve closed, and Fig.2, a similar view showing said valve open. Parts of the casing and of the valve spindle are broken out in these views in order to economize space.
  • the casing of the hydrant illustrated in the drawings consists of a base piece 7 in which is the inlet 8, asuperimposed connection 9 which varies in length to adapt the hydrant to different localities, a superimposed body 10 in which is one or more outets 11, and a superimposed ca 12, allbolted together in the usual and wel -known manner.
  • a centrally perforated, diaphragmal plate 13 Suitably supported within the cap 12 is a centrally perforated, diaphragmal plate 13 which forms a bearing and guide for a valve spindle 14.
  • the hub-like center of the plate 13 receives an internally screwthreaded bushing 15 with which a screwthreaded part 16 of the spindle 14 engages.
  • a stuffing-box 17 for the spindle 14 is screwed into the plate 13 above the bushing 15, and a follower 18 is screwedontothe top of such stuffing-box.
  • a nut 19 Rigidly attached to thetop of the spindle 14 is a nut 19 which receives the wrench used'to turn said spindle.
  • the nut 19 rojects through an opening in the top of tlecap- 12, and said nut has a body 20 which extends into said cap when the spindle is inwardly disposed;
  • a scale, as shown in Figs. 1 and 3, is marked on the body 20, there being siX graduations in the present instance, numbered from above downward from 1 to 6.
  • a coupling 21 connects the two rods which together make up the spindle 14..
  • the screw-threads 22 are inuch'coarser than the screw-threads 16 and 23 which are alike, the ratio being in this case about four of the fine, threads to one of the coarse threads.
  • the fine threads form ri ht-hand screws and the coarse threads for a eft-hand screw, but this arrangement may be. reversed.
  • the upper screw 16 is something more than twice the length of the lower screw 23, and the intermediate screw 22 is very much longer than said lower screw. The reason for these differences inthreads and screws will a pear presently.
  • the upper screw 16 is a trust screw, the next lower screw 22 is the nut actuating screw, and the lowest screw 23 I term the safety screw.
  • the screw 23 engages an internally screw threaded bushing 24 incorporated with a fixed nut 25 which rises from the bottom of the base 7.
  • a center-piece, projection or stud 26 the di ameter of which is the same as the small diameter of the screw-threads in the bushing 24.
  • a chamber 27 in the nut 25 is for the accommodation of the stud 26'.
  • a valveseat 28 for a Vertically movable valve 29 which has a rubber ring 30 attached thereto by means of a retaining ring 31 and nut 32.
  • the ring 30 makes a ti ht joint with the valve-seat when the va ve is closed.
  • An arm 33 projects laterally from the back of the valve 29 near the top, The spindle 14 passes through an opening 34 in the arm 33 the diameter of which opening is considerably larger than the" diameter of that por tion of said spindle which operates in and through said opening.
  • Below the arm 33 and in threaded engagement with the screw 22 is an operating wedge nut 35' for the valve 29.
  • a spring 36 seated in a pocket 87 in the lower rear part of the valve 29 and bearing path of travel of the nut 35.
  • any given mark of the scale when in line with the top of the cap 12, must indicate correctly the position of the valve for example, sup-- pose the mark 3 be in line with such top of the cap, it is known at once that the valve is three-sixths of the way or half open. This register is very convenient when it is not desired to locate the valve in either of its extreme positions.
  • the scale may vary to meet different requirements, that is, it may be made finer or coarser and have more or less than the number of graduations shown.
  • the screw 16 takes the thrust of the spin dle 14 in place of the nut formerly employed for this purpose, but in the event that an accident happens to the hydrant which breaks the engagement of said screw with the plate 13, while the valve 29 is closed, said spindle is prevented from rising and said valve from opening by reason of the engagement of the screw 23 with'the nut 25.
  • the great value and utility of this feature of my invention was carefully pointed out in the introductory part of this description, Excepting when the spindle is at the upper end of its travel or nearly at that point and the valve consequently wide 0 en, the screw 23 is held by the nut 25, so tliere is always a strong base check or look for said spindle which provides additional holding means for said valve whether the latter be completely closed or partly open.
  • the bushings 16 and 24 really constitute parts of the plate 13 and the nut 25, respectively, and so far as this invention is concerned it would make no diflerence if such bushings were omitted and the tapping were done directly in the metal of which said plate and nut consist.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Description

G. W. JOHNSTON.
HYDRANT.
APPLICATION 21mm JULY 22, 1908.
Patented July 20, 1909.
'LVVENTOR.
ATTORNEYJ,
n B GRAHAM ca. womumuclunui, WABHI mvrrnn srar ns PATENT orrron GEORGE W. JOHNSTON, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO CHAPMAN VALVE MANUFACTURING COMPANY, OF INDIAN ORCHARD, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.
HYDRANT.
Specification of Letters Patent.
Patented J 'uly 20, 1909.
Application filed July 22, 1908. Serial No. 444,701.-
To all whom it may concern:
Be it known that I, GEORGE W. J OHNSTON, a citizen of the United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, have invented certa'in new and useful Improvements in Hydrants, of which the following is a specification.
My invention relates to improvements in valves of the inside-screw variety, in which provision is made for imparting to the valve spindle a limited amount of longitudinal movement without, however, taking away as the chief factor in opening and closing the valve proper the means whereby said valve is operated by therotary motion of said spindle after the manner of inside-screw valves, with the result that the spindle is converted into an indicator which shows the position of the valve and, what is of far greater importance, has a secure connection at the base eX- cept when the valve is wide open, the invention being particularly designed for and adapted to fire-plugs or hydrants.
It frequently happens that hydrants are broken off above the ground by heavy wagons and automobiles, when with the old construction their valves are released and immediately open, and that in consequence of such accidents large volumes of water run to waste and sometimes do much damage to adjacent property before the water can be shut off back of said valves, thus there is always the loss of the water to take into account and there may be in addition the damage just mentioned, and the primary object of my invention is to produce a hydrant in which the valve will remain closed regardless of. any injury which the exposed part of such hydrant may sustain, provided the valve be closed at the time the accident occurs.
A further object of my invention is to utilize the valve spindle as an indicator of the position of the valve, the ordinary insidescrew construction not permitting this to be done.
Other objects will appear during the course of the following description, and it will be seen that the improved construction is simple, is readily adaptable to the ty e of valve for which it is intended, and won d increase the strength, durability, practicability and efficiency of such type even in the absence of the new features of special and peculiar usefulness.
I attain the objects and secure the advantages of my invention by the means illustrated in the accompanying drawings, in which Figure 1 is a sectional view of a hydrant embodying my invention, showing the valve closed, and Fig.2, a similar view showing said valve open. Parts of the casing and of the valve spindle are broken out in these views in order to economize space.
Similar fi 'ures refer to similar parts throughout t 1e views.
The casing of the hydrant illustrated in the drawings consists of a base piece 7 in which is the inlet 8, asuperimposed connection 9 which varies in length to adapt the hydrant to different localities, a superimposed body 10 in which is one or more outets 11, and a superimposed ca 12, allbolted together in the usual and wel -known manner. Suitably supported within the cap 12 is a centrally perforated, diaphragmal plate 13 which forms a bearing and guide for a valve spindle 14. The hub-like center of the plate 13 receives an internally screwthreaded bushing 15 with which a screwthreaded part 16 of the spindle 14 engages. A stuffing-box 17 for the spindle 14 is screwed into the plate 13 above the bushing 15, and a follower 18 is screwedontothe top of such stuffing-box. Rigidly attached to thetop of the spindle 14 is a nut 19 which receives the wrench used'to turn said spindle. The nut 19 rojects through an opening in the top of tlecap- 12, and said nut has a body 20 which extends into said cap when the spindle is inwardly disposed; A scale, as shown in Figs. 1 and 3, is marked on the body 20, there being siX graduations in the present instance, numbered from above downward from 1 to 6. A coupling 21 connects the two rods which together make up the spindle 14.. Below the coupling 21 less the spindle is screwethreaded at 22, and more screw-threads appear'on said spindle at 23, these last being at the lower terminal. The screw-threads 22 are inuch'coarser than the screw-threads 16 and 23 which are alike, the ratio being in this case about four of the fine, threads to one of the coarse threads. The fine threads form ri ht-hand screws and the coarse threads for a eft-hand screw, but this arrangement may be. reversed. The upper screw 16 is something more than twice the length of the lower screw 23, and the intermediate screw 22 is very much longer than said lower screw. The reason for these differences inthreads and screws will a pear presently. The upper screw 16 is a trust screw, the next lower screw 22 is the nut actuating screw, and the lowest screw 23 I term the safety screw.
en inwardly disposed the screw 23 engages an internally screw threaded bushing 24 incorporated with a fixed nut 25 which rises from the bottom of the base 7.- Below the screw 23 the spindle 14' is provided with a center-piece, projection or stud 26 the di ameter of which is the same as the small diameter of the screw-threads in the bushing 24. A chamber 27 in the nut 25 is for the accommodation of the stud 26'.
At the inner end of the inlet 8 is a valveseat 28 for a Vertically movable valve 29 which has a rubber ring 30 attached thereto by means of a retaining ring 31 and nut 32. The ring 30 makes a ti ht joint with the valve-seat when the va ve is closed. An arm 33 projects laterally from the back of the valve 29 near the top, The spindle 14 passes through an opening 34 in the arm 33 the diameter of which opening is considerably larger than the" diameter of that por tion of said spindle which operates in and through said opening. Below the arm 33 and in threaded engagement with the screw 22 is an operating wedge nut 35' for the valve 29. A spring 36 seated in a pocket 87 in the lower rear part of the valve 29 and bearing path of travel of the nut 35.
at its upper end against that part of the nut 35 which is above tends to force said valve downward as far as the arm 33 and said nut will permit. The nut 35 engages the valve 29 in such a way that said. nut cannot rotate. A wedge 38 springs from the side of the base 7 which is opposite the outlet 8, on the in side, and extends into the lower part of the There is also a wedge 39 on the back of the valve 29 between said v'alve' and the nut- 35. In practice there are two wedges 39.
When the valve 29 is closed its rin 30 is forced hard against the valve seat 28 y the wedging action of the members 38 and 39 and the nut 35 under the downward pressure of the spindle 14 and so held, in the customary manner.
To open the valve 29,- assuming that it be closed as shown in Figs; 1 and 2, apply a Wrench to the nut 19 and rotate said nutand with it the spindle 14 to the right, when the latter rises in the bushings 15 and 24 and at the same time raises the nut 35 by the screw 22. The nut 35 thus carried upward by the spindle and with the spindle takes with it tie valve 29 and so opens the inlet 8,- such inlet being wide open by the time the arm 33 contacts with the bottom of the coupling 21, further movement in this direction then being arrested. The parts now stand as vshow-n in Fig. 2 with the body 20 of the nut 19 above the top of the cap 12, and the screw23' out of the fixed nut 25, only the stud 26 remaining insaid nut to center the spindle at the base and to prevent dirt from fouling the screw-threads below and from gettingv into the chamber 27 and so 0bstruet mg the return of said spindle to its former position. The valve is again closed by rotating the spindle to the left until all of the parts resume theirtormer' places.
It will be understood that, owing to the difference already noted between the screws 16 and 23 and the screw 22, the movement of the nut 35 on the spindle is much greater at each revolution of said spindle than is the movement of the spindle itself longitudinally, therefore while the spindle is moving a short distance vertically the valve 29 moves through a considerable space relati-vel yi The scale on the body 20 registers or indicates the position of the valve, because the total length of said scale is the same as the maximum length of vertical travel of the spindle and corresponds to the maximum length of vertical travel of the valve, and the ratio between said travel of the spindle and said travel of the valve is always the same.
From the foregoing it is clear that any given mark of the scale, when in line with the top of the cap 12, must indicate correctly the position of the valve for example, sup-- pose the mark 3 be in line with such top of the cap, it is known at once that the valve is three-sixths of the way or half open. This register is very convenient when it is not desired to locate the valve in either of its extreme positions.- The scale may vary to meet different requirements, that is, it may be made finer or coarser and have more or less than the number of graduations shown.
The screw 16 takes the thrust of the spin dle 14 in place of the nut formerly employed for this purpose, but in the event that an accident happens to the hydrant which breaks the engagement of said screw with the plate 13, while the valve 29 is closed, said spindle is prevented from rising and said valve from opening by reason of the engagement of the screw 23 with'the nut 25. The great value and utility of this feature of my invention was carefully pointed out in the introductory part of this description, Excepting when the spindle is at the upper end of its travel or nearly at that point and the valve consequently wide 0 en, the screw 23 is held by the nut 25, so tliere is always a strong base check or look for said spindle which provides additional holding means for said valve whether the latter be completely closed or partly open. Since the screw 23 is not required actively while the spindle is at the upper end of its travel, it need not be as long as t e screw 16 which undernormal conditions is constantly in active service, and for this reason the construction is such that said screw 23 leaves the bushing 24 when said s indle approaches the aforesaid upper end of travel.
The bushings 16 and 24 really constitute parts of the plate 13 and the nut 25, respectively, and so far as this invention is concerned it would make no diflerence if such bushings were omitted and the tapping were done directly in the metal of which said plate and nut consist.
I make no claim for the valve er se with its wedging mechanism because am aware that the same is old in the art. I am aware, too, that various kinds of screw spindles for operating valves have been employed before, but not in the same or a similar form as herein set forth.
What I claim as my invention, and desire to secure by Letters Patent, is-
1. The combination, in a device of the class described, with a valve, of a rotary reciprocating spindle therefor, means to cause said valve to travel a greater distance than said spindle longitudinally at each revolution of the latter, and a member on the spindle provided with a scale to denote the positions of both s indle and valve.
2. The combination, in a device of the class described, with a suitable casing provided above with a plate adapted to serve as a bearing and guide for a spindle, and having below a fixed nut, and a valve provided with spindle-engaging means, of a spindle tapped into said plate and also tapped into said nut and having threaded engagement with said spindle-engaging means, and an operating nut on the head of said spindle which protrudes through the top of said casing and has a scale thereon to indicate the position of the spindle and thus register the condition of the valve.
3. The combination, in a device of the class described, with a suitable casing provided above with a plate adapted to serve as a bearing and guide for a spindle, and having below a fixed nut, and a valve provided with spindle engaging means, of a spindle tapped into said plate and also tapped into said nut and having threaded engagement with said spindle-engaging means, and provided with a bottom stud having substantially the same diameter as the small diameter of the screwthreads in the nut.
4. The combination, in a device of the class described, with a suitable casing provided above with a plate adapted to serve as a bearing and guide for a spindle, and having below a fixed nut, a valve, and a valve nut, of a spindle having formed thereon a thrust screw to engage said plate, a safety screw to engage said fixed nut, and an actuating screw for said valve nut, the threads of said nut-actuating screw being coarser than those of the other screws.
GEORGE W. JOHNSTON.
Witnesses:
F. A. CUTTER, T. R. GEARY.
US1908444701 1908-07-22 1908-07-22 Hydrant. Expired - Lifetime US928663A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001054A1 (en) * 2007-01-03 2008-07-10 Hawle Armaturen Gmbh Hydrostatic axial piston machine in inclined disc construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007001054A1 (en) * 2007-01-03 2008-07-10 Hawle Armaturen Gmbh Hydrostatic axial piston machine in inclined disc construction method
DE102007001054B4 (en) * 2007-01-03 2015-07-02 Hawle Armaturen Gmbh Hydrant sealing system with sealing body which can be brought out of the flow path

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