US2626630A - Hydraulic control valve - Google Patents

Hydraulic control valve Download PDF

Info

Publication number
US2626630A
US2626630A US17751550A US2626630A US 2626630 A US2626630 A US 2626630A US 17751550 A US17751550 A US 17751550A US 2626630 A US2626630 A US 2626630A
Authority
US
United States
Prior art keywords
trough
valve
plunger
conduit
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Francis B Hotton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US17751550 priority Critical patent/US2626630A/en
Application granted granted Critical
Publication of US2626630A publication Critical patent/US2626630A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K39/00Feeding or drinking appliances for poultry or other birds
    • A01K39/02Drinking appliances
    • A01K39/022Drinking appliances with weight-controlled supply
    • 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
    • F16K21/00Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04Self-closing valves, i.e. closing automatically after operation
    • F16K21/16Self-closing valves, i.e. closing automatically after operation closing after a predetermined quantity of fluid has been delivered
    • F16K21/165Self-closing valves, i.e. closing automatically after operation closing after a predetermined quantity of fluid has been delivered with means sensing the weight of said fluid quantity
    • 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
    • Y10T137/7287Liquid level responsive or maintaining systems
    • Y10T137/7339By weight of accumulated fluid
    • Y10T137/7355In gravitating tank

Definitions

  • the present invention relates to improvements in hydraulic control valves for watering troughs employed for poultry and the like.
  • An object of the present invention is to provide a novel means for delivering water to a trough for poultry, wherein the means of the present invention is supported by the inlet conduit.
  • a further object of the present invention resides in a novel arrangement for resiliently supporting the trough whereby lowering of the water level in the trough effects resilient operation of the valve for permitting inflow of water.
  • Still another object of the present invention resides in the arrangement of pressure closed valve and plunger means for unseating the pressure closed valve whereby upward movement of the plunger first unseats the pressure closed valve and then itself seats for closing against the flow of water upon further upward movement.
  • Another object of the present invention is to provide a novel resilient bracket whereby one end of a trough may be supported and wherein the bracket is readily removably positioned upon a supporting member.
  • Figure l is a side elevational view showing the hydraulic control valve of the present invention with the drinking trough supported thereby;
  • Figure 2 is an end elevational view of Figure 1;
  • Figure 3 is a vertical transverse sectional view taken substantially along the plane of line 3-3 of Figure 1.
  • the numeral l0 designates generally the trough for poultry and the like
  • the numeral l2 designates generally the hydraulic control valve means of the present invention.
  • the trough I0 is of conventional form, having a flange l4 integrally formed with its upper edge and outwardly extending therefrom.
  • the trough I0 is hingedly connected to a block 16 at -l 8 whereby the loss of weight in the trough due to drinking and evaporationeifects pivoting movement of the trough In with respect to the block It.
  • An inlet conduit 20 provides means for supporting the valve arrangement and has threadably secured to its extremity the valve cas- 2 ing 22 which is shown of non-circular form whereby it may be threaded onto the end of the cpnduit 20.
  • the casing 22 is formed with an annular shoulder 24 upon which an annular valve seat 26 is securely positioned.
  • the casing 22 is internally threaded at 28 for receiving the externally threaded tubular outlet conduit 30.
  • a locking nut 32 is threadably engaged on the tubular conduit 30 for securely locking the same in position within the casing 22.
  • a ball valve 34 is positioned above the annular valve seat 20 within the casing 22 and is engaged with the seat 28 as a result of the fluid pressure exerted thereagainst by the inlet fluid.
  • the outlet conduit 30 is of elongated form and is completely threaded on its exterior surface, the conduit 30 being of sufficient length to extend downwardly to a point near the upper surface of the trough I0.
  • a spring retainer'36 is threadably and adjustably secured on the outlet conduit 30 and a spring 38 is seated thereon.
  • the supporting member 40 Positioned above the spring 38 and resiliently supported thereby is the supporting member 40 which is provided with a pair of angulated end portions 42 and 44 which are bifurcated for a purpose to be hereinafter described.
  • the outlet sleeve 46 is received on the lower end of the outlet conduit 30 and has an annular flange 48 extending outwardly from a portion adjacent its upper ends. tained in spaced relation to the supporting member 40 by means of a plurality of spacing and supporting pins 50.
  • the sleeve 46 is provided with a plurality of apertures 52 and 54 along its longitudinal length for reasons to be hereinafter set forth.
  • the means for supporting the trough I0 include the bracket 56 which has a pair of downwardly extending arcuated arms 58 and 60 terminating in upwardly arcuated portions 62 and 64 for engagement with the under surface of the flange [4 of the trough I0.
  • the upper portion of the bracket 56 is horizontally angulated with respect to the arms 58 and 60 as shown at 6B.
  • the angulated portion 66 is formed with a pair of radially extending supporting portions 68 and 10 which are adapted to be received in the bifurcated portions of the supporting member 40 hereinabove described.
  • the centermost portion of the bracket 56 is of elongated arcuate form and provides a finger holding portion whereby the bracket 56 may be removed from the bifurcations 42 and 44 or inserted therein.
  • the plunger means II is provided with an angulated end 12 which is adapted to be selectively positioned in one of the apertures 52 or 54 provided for adjustment purposes.
  • the upper end of the plunger II is provided with an annular seating surface 14 and a needle-like end 16.
  • the flange 48 is main-' needle-like end 16 is adapted to unseat the ball valve 34 upon upward movement of the plunger l I, and continued upward movement of the plunger effects seating engagement of the seating surface 14 against the annular seat 26.
  • the spring 33 will urge the sleeve 46 upwardly, with the plunger i I moving therewith.
  • the plunger will first unseat the ball valve, but continued upward movement will effect seating of the surface i i against the ring 26.
  • a hydraulic control valve comprising an inlet and valve support conduit, a valve casing secured to the lower end of said conduit, a pressure closed valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said means for resiliently porting a water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured to said supporting member and receiving said outlet conduit therein said outlet sleeve 'beingconnected to'said plunger means.
  • Ahydraulic control valve comprising an inlet and valve support conduit, a valve casing secured to the lower end of said conduit, a pressure closed V f valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said means for resiliently supporting a, water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured to said supporting member and receiving said outlet conduit therein, aperture means formed in the wall of said sleeve, said plunger means including a plunger having a needle end for engagement with said valve means, the other end of said plunger being angulated for insertion into said
  • a hydraulic control valve comprising an inlet and valve supporting conduit, a valve casing secured to the lower end of said conduit, a pressure closed valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said pressure closed valve means including an annular seating ring in said casing, and a ball valve positioned thereon, said means for resiliently supporting a water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured 'to said supporting member and receiving said outlet conduit therein, aperture means formed in the wall of said sleeve, said plunger means including a plunger having a needle end
  • a hydraulic control valve comprising an inlet conduit, a valve casing secured to the end of said conduit, a pressure closed valve means in said casing, an outlet conduit connected to said casing, a spring retainer mounted on said outlet conduit, a spring mounted on said retainer, a trough supporting member mounted on said spring, means supporting a trough from said supportin member, an outlet sleeve rigidly secured to said supporting member, said outlet conduit extending into said sleeve, a plunger extending through said outlet conduit, said plunger having an end for engagementwith said valve means, said sleeve having apertures therein and said plunger havin a portion forinsertion into one of said apertures, whereby said plunger operates said valve means in response to movement of said sleeve.
  • a hydraulic control valve comprising an inlet conduit, a valve casing secured 'to the end of said conduit, an annular valve seat member and a pressure closed valve member in said casing, an outlet conduit connected to said casing, a spring retainer mounted on said outlet conduit, a spring mounted on said retainer, a trough supporting member mounted on said spring, means supporting a trough from said supportingmemher, an outlet sleeve rigidly secured tosaid supporting member, said outlet conduit extending into said sleeve, aplunger extendingthrough said outlet conduit, said plunger having an end for engagement with said valve member, said sleeve having apertures therein and said plunger having a portion for insertion into one of said apertures, an annular seating surface on said plunger below said valve member, said annular seating-surface cooperating with said annular valve-seat member to provide 'a secondary valve action, whereby said plunger operates said valve member in response to movement of said sleeve.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Birds (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Safety Valves (AREA)

Description

Jan. 27, 1953 F. B. HOTTON HYDRAULIC CONTROL VALVE Filed Aug. 3, 1950 Fig.
E 22. .im
m a m m 0 "T o A I F 2 m a 4 6 8 0 6 3 4 B m 2 2 M. 2 0 .5 w c w I M i: .rarTiiifliw? r Y F B am vkw w. 6 6 0 2 3/ m M m m wfi 2 0... v .4 H w a Patented Jan. 27, 1953 UNITED STATES PATENT OFFICE HYDRAULIC CONTROL VALVE Francis B. Hotton, Salisbury, Md.
' Application August 3, 1950, Serial No. 177,515
- Claims.
: The present invention relates to improvements in hydraulic control valves for watering troughs employed for poultry and the like.
An object of the present invention is to provide a novel means for delivering water to a trough for poultry, wherein the means of the present invention is supported by the inlet conduit.
A further object of the present invention resides in a novel arrangement for resiliently supporting the trough whereby lowering of the water level in the trough effects resilient operation of the valve for permitting inflow of water.
Still another object of the present invention resides in the arrangement of pressure closed valve and plunger means for unseating the pressure closed valve whereby upward movement of the plunger first unseats the pressure closed valve and then itself seats for closing against the flow of water upon further upward movement.
Another object of the present invention is to provide a novel resilient bracket whereby one end of a trough may be supported and wherein the bracket is readily removably positioned upon a supporting member.
Various other objects and advantages will be apparent from a detailed description to follow. In the description as well as in the claims, parts are at times identified by specific names for convenience, but such nomenclature is intended to be as generic in its application to analogous parts as the prior art will permit.
The best form in which I have contemplated applying my invention is illustrated in the accompanying drawings, wherein:
Figure l is a side elevational view showing the hydraulic control valve of the present invention with the drinking trough supported thereby;
Figure 2 is an end elevational view of Figure 1; and
Figure 3 is a vertical transverse sectional view taken substantially along the plane of line 3-3 of Figure 1.
Referring more particularly to the drawings, wherein like numerals designate like parts throughout, the numeral l0 designates generally the trough for poultry and the like, and the numeral l2 designates generally the hydraulic control valve means of the present invention.
The trough I0 is of conventional form, having a flange l4 integrally formed with its upper edge and outwardly extending therefrom. The trough I0 is hingedly connected to a block 16 at -l 8 whereby the loss of weight in the trough due to drinking and evaporationeifects pivoting movement of the trough In with respect to the block It.
The hydraulic control valve I2 is best disclosed in Figure 3. An inlet conduit 20 provides means for supporting the valve arrangement and has threadably secured to its extremity the valve cas- 2 ing 22 which is shown of non-circular form whereby it may be threaded onto the end of the cpnduit 20. The casing 22 is formed with an annular shoulder 24 upon which an annular valve seat 26 is securely positioned. The casing 22 is internally threaded at 28 for receiving the externally threaded tubular outlet conduit 30. A locking nut 32 is threadably engaged on the tubular conduit 30 for securely locking the same in position within the casing 22. A ball valve 34 is positioned above the annular valve seat 20 within the casing 22 and is engaged with the seat 28 as a result of the fluid pressure exerted thereagainst by the inlet fluid.
The outlet conduit 30 is of elongated form and is completely threaded on its exterior surface, the conduit 30 being of sufficient length to extend downwardly to a point near the upper surface of the trough I0. A spring retainer'36 is threadably and adjustably secured on the outlet conduit 30 and a spring 38 is seated thereon. Positioned above the spring 38 and resiliently supported thereby is the supporting member 40 which is provided with a pair of angulated end portions 42 and 44 which are bifurcated for a purpose to be hereinafter described.
The outlet sleeve 46 is received on the lower end of the outlet conduit 30 and has an annular flange 48 extending outwardly from a portion adjacent its upper ends. tained in spaced relation to the supporting member 40 by means of a plurality of spacing and supporting pins 50. The sleeve 46 is provided with a plurality of apertures 52 and 54 along its longitudinal length for reasons to be hereinafter set forth.
The means for supporting the trough I0 include the bracket 56 which has a pair of downwardly extending arcuated arms 58 and 60 terminating in upwardly arcuated portions 62 and 64 for engagement with the under surface of the flange [4 of the trough I0. The upper portion of the bracket 56 is horizontally angulated with respect to the arms 58 and 60 as shown at 6B. The angulated portion 66 is formed with a pair of radially extending supporting portions 68 and 10 which are adapted to be received in the bifurcated portions of the supporting member 40 hereinabove described. The centermost portion of the bracket 56 is of elongated arcuate form and provides a finger holding portion whereby the bracket 56 may be removed from the bifurcations 42 and 44 or inserted therein.
The plunger means II is provided with an angulated end 12 which is adapted to be selectively positioned in one of the apertures 52 or 54 provided for adjustment purposes. The upper end of the plunger II is provided with an annular seating surface 14 and a needle-like end 16. The
The flange 48 is main-' needle-like end 16 is adapted to unseat the ball valve 34 upon upward movement of the plunger l I, and continued upward movement of the plunger effects seating engagement of the seating surface 14 against the annular seat 26.
From the foregoing description, taken in conjunction with the drawings, it is believed that a device has been provided which will accomplish all of the objects hereinabove set forth and that the operation thereof will be readily obvious to one skilled in the art. As the water in the trough It is drunk or evaporates, the trough It will pivot upwardly, lightening the load on the supporting member '19 and effecting upward movement of the sleeve it. The plunger II will be carried upwardly therewith and will unseat the ball valve 34, permitting entry of additional water.
When the trough is completely removed from the trough supporting means, the spring 33 will urge the sleeve 46 upwardly, with the plunger i I moving therewith. The plunger will first unseat the ball valve, but continued upward movement will effect seating of the surface i i against the ring 26.
Having described the invention, what is claimed as new is:
l. A hydraulic control valve comprising an inlet and valve support conduit, a valve casing secured to the lower end of said conduit, a pressure closed valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said means for resiliently porting a water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured to said supporting member and receiving said outlet conduit therein said outlet sleeve 'beingconnected to'said plunger means.
2. Ahydraulic control valve comprising an inlet and valve support conduit, a valve casing secured to the lower end of said conduit, a pressure closed V f valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said means for resiliently supporting a, water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured to said supporting member and receiving said outlet conduit therein, aperture means formed in the wall of said sleeve, said plunger means including a plunger having a needle end for engagement with said valve means, the other end of said plunger being angulated for insertion into said aperture means.
3. A hydraulic control valve comprising an inlet and valve supporting conduit, a valve casing secured to the lower end of said conduit, a pressure closed valve means in said casing, an outlet conduit associated with said casing, means for resiliently supporting a water trough by said outlet conduit, and plunger means responsive to a lowering of the water level in said trough to a predetermined amount for opening said valve means in opposition to the pressure, said pressure closed valve means including an annular seating ring in said casing, and a ball valve positioned thereon, said means for resiliently supporting a water trough including a spring retainer on said outlet conduit, a spring mounted on said retainer, a supporting member mounted on the upper end of said spring, a trough supporting bracket removably positioned on said supporting member and having hook portions for engagement with the trough, and an outlet sleeve rigidly secured 'to said supporting member and receiving said outlet conduit therein, aperture means formed in the wall of said sleeve, said plunger means including a plunger having a needle end for engagement with said valve means, the other end of said plunger being angulated for insertion into said aperture means.
4. A hydraulic control valve comprising an inlet conduit, a valve casing secured to the end of said conduit, a pressure closed valve means in said casing, an outlet conduit connected to said casing, a spring retainer mounted on said outlet conduit, a spring mounted on said retainer, a trough supporting member mounted on said spring, means supporting a trough from said supportin member, an outlet sleeve rigidly secured to said supporting member, said outlet conduit extending into said sleeve, a plunger extending through said outlet conduit, said plunger having an end for engagementwith said valve means, said sleeve having apertures therein and said plunger havin a portion forinsertion into one of said apertures, whereby said plunger operates said valve means in response to movement of said sleeve.
5. A hydraulic control valve comprising an inlet conduit, a valve casing secured 'to the end of said conduit, an annular valve seat member and a pressure closed valve member in said casing, an outlet conduit connected to said casing, a spring retainer mounted on said outlet conduit, a spring mounted on said retainer, a trough supporting member mounted on said spring, means supporting a trough from said supportingmemher, an outlet sleeve rigidly secured tosaid supporting member, said outlet conduit extending into said sleeve, aplunger extendingthrough said outlet conduit, said plunger having an end for engagement with said valve member, said sleeve having apertures therein and said plunger having a portion for insertion into one of said apertures, an annular seating surface on said plunger below said valve member, said annular seating-surface cooperating with said annular valve-seat member to provide 'a secondary valve action, whereby said plunger operates said valve member in response to movement of said sleeve.
FRANCIS B. HOTTON.
REFERENCES err-En The following'references are of record inth'e file of this patent:
UNITED STATES PATENTS Number Name Date 1,662,716 Peterson 'Mar,.'l3, 1928 2,512,839 Pruitt June 27, 1950
US17751550 1950-08-03 1950-08-03 Hydraulic control valve Expired - Lifetime US2626630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17751550 US2626630A (en) 1950-08-03 1950-08-03 Hydraulic control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17751550 US2626630A (en) 1950-08-03 1950-08-03 Hydraulic control valve

Publications (1)

Publication Number Publication Date
US2626630A true US2626630A (en) 1953-01-27

Family

ID=22648895

Family Applications (1)

Application Number Title Priority Date Filing Date
US17751550 Expired - Lifetime US2626630A (en) 1950-08-03 1950-08-03 Hydraulic control valve

Country Status (1)

Country Link
US (1) US2626630A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714390A (en) * 1952-10-27 1955-08-02 John W Goff Suspension mount for automatic fount
US3092078A (en) * 1961-11-15 1963-06-04 George D Goswick Poultry water fountain
US3837539A (en) * 1972-09-01 1974-09-24 Haas W And Sohn Cart mounted removable sprayer
US20120012062A1 (en) * 2008-01-31 2012-01-19 Misty Johnson Method and apparatus for pet water drinking device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662716A (en) * 1927-05-21 1928-03-13 John B Peterson Regulating valve for water troughs
US2512839A (en) * 1946-10-22 1950-06-27 Virgil H Pruitt Watering device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1662716A (en) * 1927-05-21 1928-03-13 John B Peterson Regulating valve for water troughs
US2512839A (en) * 1946-10-22 1950-06-27 Virgil H Pruitt Watering device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714390A (en) * 1952-10-27 1955-08-02 John W Goff Suspension mount for automatic fount
US3092078A (en) * 1961-11-15 1963-06-04 George D Goswick Poultry water fountain
US3837539A (en) * 1972-09-01 1974-09-24 Haas W And Sohn Cart mounted removable sprayer
US20120012062A1 (en) * 2008-01-31 2012-01-19 Misty Johnson Method and apparatus for pet water drinking device

Similar Documents

Publication Publication Date Title
US2512839A (en) Watering device
US2775227A (en) Drop delivery type poultry fountain
GB1438687A (en) Water dispenser
US2626630A (en) Hydraulic control valve
US2541369A (en) Water dispenser for poultry
US2307220A (en) Drinking valve
US2665706A (en) Water flow regulator
US2716423A (en) Trough valve
US3063417A (en) Automatic poultry waterer
GB1420341A (en) Drinking fountains
US2107573A (en) Poultry fountain
USRE23447E (en) Wateking device
US3092078A (en) Poultry water fountain
US1824116A (en) Fountain unit
US1210601A (en) Poultry drinking-fountain.
US1548720A (en) Drinking fountain
US2225087A (en) Vacuum operated boiler compound sight feeder
US2739609A (en) Automatic liquid feed valve
US2333946A (en) Animal scratching device
US2722231A (en) Automatic control valve
US2031723A (en) Drinking fountain
US3151338A (en) Apparatus for flushing toilets
US2810367A (en) Constant mass liquid dispensing control
US1460702A (en) Poultry fountain
US1771947A (en) Automatic animal drinking fountain