US1759662A - Pressure control for hydraulic oil storing and delivering systems - Google Patents

Description

v a L May 20, 1930. w. J. PETER 1,759,662

PRESSURE CONTROL FOR HYDRAULIC OIL STORING AND DELIVERING SYSTEMS Original Filed Oct. '7, 1926 3 Sheets-Sheet 1 v INVEN R M ATTORNEYS w. J. PETER 1,759,662

AND DELIVERING SYSTEMS May 20, 1930.

PRESSURE CONTROL FOR HYDRAULIC OIL STORING Original Filed 001:. '7, 1926 3 Sheets-Sheet 2 ML 1; ATTORNEY s w.- J. PETER 1,759,662 PRESSURE CONTROL FOR HYDRAULIC OIL STORING AND DELIVERING SYSTEMS May 120, 1930.

a sums-sheet 5 Original Filed Oct. 7, 1926 ATTORNEYS Patented May 20, 1930 WILLIAM J. PETER, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGN- PATENT OFFICE MENTS, TO AQUA SYSTEMS INCORPORATED, OF NEW YORK, N. Y., A CORPORATION or mew Yoax PRESSURE CONTROL FOR HYDRAULIC OIL STORING AND DELIVERING SYSTEMS Application-filed October 7,1926, Serial No. 140,006. Renewed April 11, 1928.

This invention relates to oil storage and delivery systems and particularly to means for automatically disconnecting the source of pressure when the system is not delivering oil.

In oil storage and delivery systems operated by, hydraulic pressure, the oil is stored within a tank-and forced out through an 011 delivery pipe entering'the top of the tank,

,10 by means of-water forced in at the bottom.

Delivery of the oil can be controlled either a by means of a valve placed in the water pres sure line or a valve placed in the oil delivery line. If the latter valve is relied upon wholly the system is under full hydrostatic pressure at all times, and, in the event of a break in the oil delivery line, this constantly acting pressure will act immediately to empty the tank. Because of the fire risk thus involved when the contents of the tank are inflammable, as in gasoline filling stations, the authorities insome localities insist that the connection with the operating water supply be closed when the system is not in use. This means that every time the station is used the valvein the water line must be opened, and closed again when the delivery has been completed, which is irksome to the operator and is avoided when possible. There is atendency therefore to disregard the water pressure valve and to manipulate it onl by opening it in the morning and closing it at ni -ht.

In most delivery systems, particularly in gasoline filling stations, not only is the delivery hose provided with a nozzle control valve but a second control valve or so-called key valve is situated in the oil line adjacent the meter. It has been proposed so to con- 40 nect this key valve with the valve in the water line that when the key valve is opened the water control valve is likewise opened, and,

when the key valve is closed the water control valve is closed. This system of control would work very well and would insure the cutting off of pressure between deliveries of oil if the operator could be relied upon to close the key valve after each filling operation. But the operator cannot be relied upon to do this. any more than he can be relied pressure control valve in the water line or its equivalent when the operator hangs up the hose after a filling operation. The key valve is constantly urged into closed position by a spring and is manually opened inropposition to the spring by means of an operating arm.. I provide this operating arm with two latches, one holding it against valve-opening movement when the hose is on the hook and the other holding it against valve-closing movement when the hose is not on its hook. When the operating arm is swung to open the key valve it simultaneously opens the water valve preferably by closing a switch in series with a solenoid or other electrically actuated devices, and a source of electrical energy, the solenoid thus energized opening the valve in the water line and keeping it open as long as the hose is being used. When the hose is replaced on its hook the latch holding the key-valve operating arm in open position is automatically released, whereupon the spring closes the key-valve and swings the arm into closed position, thus opening the switch, deenergizing the solenoid and closing the valve in the "water line.

As long as the hose is on the hook it is impossible to swing the operating arm to open the valves so that danger of accidental discharge of the oil is done away with. In order to prevent unauthorized use of the system I have provided means for locking the hose on its supporting hook.

As a further improvement of the present invention I assemble the meter, the key valve, the operating arm, the solenoid control switch, the latches, the hose-supporting hook,

the hose and a check valve for systems dis-;

charging at diflerent levels, all upon one panel, thus producing a unit which can be readily and easily installed, inspected and repaired.

In my co-pending applications, Serial Nos. 62,925 and 62,926, filed October 15, 1925, now Patents 1,622,881 and 1,622,882, I have described somewhat similar means forinsuring that the valve in the water line is closed when the hose is hung upon its hook. The control illustrated in Patent No. 1,622,881, operates automatically both to open and to close the water control valve. Of these two automatic controls .the latter is far more important than the former, for obviously the operator can be relied upon to openthe'valve. In accordance with the present invention I have therefore eliminated the automatic opening of the valve and have made improvements in the automatic closing control; In Patent No. 1,622,882, I have illustrated and described manually controlled means for simultaneously closing both the key valve in the oil line and the pressure control valve in the water line. In that case, however, I insure that the operator close the water control valve after each filling by making it im ossible for him to hang up the hose until he as done so. In doing this I utilize the swinging operating arm of the key-valve as the support for the hose and so arrange it that when the arm is swung to open the valves it is incapable of serving as a support, and must beswung back into valve-closing position before the operator can hang the hose in 1ts accustomed place. The present invention represents a refinement and improvement of the controls illustrated and described in these two prior applications.

In the accompanying. drawings I have illustrated a'preferred embodiment of my invention. In these drawings Figure 1 is a diagrammatic elevation of a delivery system equipped with the pressure control of the present invention; Figure 2 is a detailed elevation of the meter panel showing the keyvalve, the delivery hose and the hose support; Figure 3 is a side elevation of the panel shown in Figure 2; Figure 4 is a section taken along hne 44 of Figure 2, and Figure 5 is a front elevation partly in section of the elements shown in igure 4. 1

Referring first to Figure 1, 1 represents the storage tank of the system, 2 the oil inlet pi 3 the oil discharge pi e and 4 thewater d:-

" livery pipe. The by aulic pressure under which the system operates is maintained b a .riser 5 terminating in a float box 6 which receives water from any suitable source as, for instance, the city water mains, the level of the water imthefloat box being maintained constant b means of a float actuated control valve 7 e tank is connected to the sewer through a waste pipe 8. The riser 5 and the sewer pipe 8 are selectively placed in commumcation with the pipe 4, and hence with the tank, by means of a manually controlled twowa valve 9. This is the main water valve an is usually manipulated only in the morning and night or when the tank is to be filled with oil through pipe 2 and its water discharged to the sewer. During normal operation of the system in dispensing oil, the valve 9 is so positioned that the riser 5 is in communication with the tankthrough the pipe 4, and communication with the sewer pipe 8 cut ofli'. v

Theoil discharge pipe 3 may supply a plurality of outlets either on' the same level as, illustrated in myPatent No. 1,622,881, or at different levels, as illustrated here. The pipe 3 passes upward to a meter panel '12 where it joins a branch pipe 13, passes through a meter 14 and terminates in a hose 15, provided with a valve controlled nozzle 16. The pipe 3 continues upward to other meter panels situated at higher levels and is provided on each panel, except the uppermost, with a check'valve 17 preventing, any back pressure from the col- 1mm of 011 extending above the panel, and making it possible to repair the elements mounted upon any given panel, or evento remove a panel without loss of oil from above.

As illustrated and described in my Patent No. 1,622,882, I place inthe riser 5 between the float box 6 and the valve9 a control valve 18 provided with a valve rod 19 to which Is connected the core of a solenoid 20. This solenoid is in series with a suitable source of energy '22 and a switch 23 mounted: upon the meter panel. -When this switch is closed, the solenoid is energized and the valve 18 opened; when the switch is opened, the solenoid 1s deenergized and the valve 18 is closed by the action of the valve rod dro pingunderits own weight. I shall now descri e in greater detail the improvements of the presentmvention.

Situated within the oil dischar e branch pipe 13 and beyond the meter is .a ey-valve 24 enclosed within a valve housing 25 and constantly urged towardits seat 26 by means of a compression coil spring 27 all as clearly shown in Figure 5. This valve as opened by means of a pair of sub-arms 28 keyed upon a rock shaft 29 journalled within housing, the sub-arms extendmg V housing and terminating within an annular groove 31 in the end ofthe valve st The rock shaft 29 is manually oscilla by means of an arm 33 fixed upon the outer end thereof. The valve construction ust described and illustrated in Figures 4 and 5 is not novel, andof itself forms no part ofv the present invention.

Secured to the inner end. of the rock shaft thevalve the 29 is a latch arm 34 which constitutes, in f eflect, an extension of the arm 33. Secured to this arm is a. downwardly extending connecting rod 35 which operates the switch 23, as illustrated in-Figures 2 and 3. The latch arm 34 is also provided with two latches 36 and 37 the former designed to prevent opening of the valve and the latter designed to prevent its closing. I shall now describe how these latches function. I

Mounted upon the meter panel just outside the valve housing 25 is a support for the hose 15. This support comprises a base member 38 mounted upon or integral with the nal movement.

meter panel 12 and provided with a bearing sleeve 39, and a hook 40 provided with an.

outer 'yoke 41 designed to receive a pair of laterally extending .ears 42 on the hose nozzle, and an inner yoke 43 to which is fixed a pin 44 mounted within the bearing sleeve 39 for oscillation and also for a slight longitudi- A compression coil spring 45 is mounted within a depression 46 on the inner end of the sleeve 39, and is secured at one end to the fixed sleeve 39, and at the other end to the yoke 43. This spring tends to swing the hook 40 upward when the latter is relieved of the weight of the hose, and also at the same time to move the hook bodily to the right, as viewed in Figures 2 and 4. The other end of the sleeve 39 terminates in a cam face 47 cooperating with a similar cam face 48 on the yoke 43, these cam faces being so designed that when the hose is replaced upon the hook, causing it to swing downward about the axis of the pin 44, the hook is shifted bodily to the left against the spring 45. The pin 44 extends beyond the yoke 43 5 to the left and terminates as a latch pin 50 designed to cooperate with the latch 37 to hold the valve 24 open. The hook is also pro-- videilgwith' a latch pin 51 extending downward and outward and designed to cooperate with the latch 36 to prevent downward swinging of the arm 33.

' When the hose is hanging upon the book 40, as illustrated in Figures 2 and 3, the latch pin- 51 is seated behind the latch 36, as illustrated in Figure 3. With the parts arranged in this position, it is impossible for the operator to swing the arm 33 downward to open the valve 24, this swinging movement being prevented by means of the latch 36 and its cooperating latch pin 51'. As soon, however, as the hose is removed from the hook, the spring 45 swings the hook 40 upward to release the latch 36 so that it becomes possible for the operator to open the valve 24 by grasping'the arm 33 and swinging it downward. At the same time the rod. 35 is moved upward to close the switch 23, energize the solenoid 20 and open the valve 18 in the water line. As the operator swings the arm 33 downward. the latch arm extension 34 swings upward and is held in its uppermost position by means of the latch 37 which snaps over the spring pressed latch pin 50, as illustrated in Figure 5. Both the valves 18 and 24 are therefore ating cam faces 47 and 48. carries the pin 44 audits latch end 50 to theheld in open position and the discharge is controlled for the time being wholly by the nozzle valve.

When the operator has completed the filling job for which he had removed the hose,

he replaces the nozzle on the hook 40. The weight of the hose thereupon swings the hook downward and in so doing shifts it bodily to the right through the action of the cooper- This movement 53. The inner side of the nozzle is provided with a lug 54 which projects inward adjacent the outer end of the arm 52 and is likewise provided with a hole 55 registering with the.

hole 53 when the hose nozzle is upon the hook. V

in which position the hose can be locked by passing the'bow of a padlock 56 through the registering holes 53 and 55.

- By means of the present invention I have provided means which automatically insure that the pressure control valve in the water line and the oil delivery control valve in the oil line are closed when the delivery hose' is hung on its accustomed hook so that all the operator need do at the conclusion of any filling operation is merely to hang up his hose, and as long as the hose remains upon the hook it is impossible for the operator to open either of the control valves. When oil is to be dispensed, the removal of the hose from the hook, although it automatically opens no Valves, makes it possible for the operator to open both control valves by a simple manual operation.

This control mechanism is particularly adapted for use in a multiple outlet system employing a plurality of discharge panels. In such a system the valve in the water line is closed when all of the delivery hose are upon their hooks. lVhen oil isto be discharged through any given hose, that hose is removed from its hook and the corresponding'key-valve 24 opened by swinging arm 33 downward. This opens the valve 18 in the water line and places the whole system under pressure, but oil can flow only from the hose which has been removed'from'its hookand whose key-valve has been opened. The other key-valves are closed and no pressure is placed.

source of hydraulic pressure designed to be connected with and disconnected from the tank, a support for the hose when not in use, and manually controlled means for connect- ,ing the source of pressure with the tank oper- 'able only when the hose is removed from the support, a nd automatically operated to disconnect the source of pressure from the tank when the hose is replaced on the support.

2. In a hydraulic oil storage and delivery system, the combination of a tank, an oil detank, a valve in the. water pipe, :1 support for the hose when not in use, and manually controlled means for. opening the valve operable only when the hose is removed from the support and automatically operated to close the valve when the hose is replaced on the support.

In a hydraulic oil storage and delivery system, the combination of a tank, an oil delivery hose receiving oil from the tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a support for the hose when not in use, manually controlled means for opening the valve, and a latch for preventing operation of said means when the hose is on the support.

4. In ahydraulic oil storage and delivery system, the combination of a tank, an oil delivery hose receiv'ing' oil from the tank, a pipe for conducting water under pressure to the tank, a. valve in the water pipe, a support for the hose when not in use, manually controlled means for opening the valve operable when the hose is removed from the support,

a latch for holding the valve open, and means for automatically freeing the latch to close the valve when the hose is replaced on the support.

5. In a hydraulic oil storage and delivery system, the combination of a tank, an oil de- "livery hose receiving oil from the tank, apipe for conducting water under pressure to'the tank, a valve in the water pipe, a support for the hose when not in use, manually controlled means for opening the valve, a latch for preventing operation of saidmeans when the hose is on the support, a second latch for holding the valve open, and means for automatically freeing said second latch to close the valve when the hose is replaced on the support.

6. In a hydraulic oil storage and delivery system, the combination of a tank, an oil deliveryhose receiving oil from the tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a support for the hose when not in use, a pivoted arm for controlling thevalve, a latch on the arm cooperating with a latch pin on the hose support for preventing movement of the arm into valve-opening position when the hose is on the support, and a second latch on the arm cooperating with a second latch pin on the support holding the arm in valve-opening positlon-as long as the hose is not on the support. 7

7 In a. hydraulic oil storage and delivery system, the combination of a tank, an oil delivery hose receiving oil from the tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a support for the hose when not in use, a pivoted arm for controlling the valve, a spring urging the arm into valve-closing position, a latch on the arm cooperating with a latch pin on the hose support for preventing movement of the arm into valve-opening position when the hose is on the support, a second latch on the arm cooperating with a second latch pin on the sup port holding the arm in valve-opening position as long as the hose is not. on the support and means for automatically retracting the second latch pin when the hose is replaced on the support to releas the latch and permit the valve arm spring to swing the arm into valve-closing position.

8. In a hydraulic oil storage and delivery system, the combination of a tank, an oil delivery pipe, a valve in the oil delivery pipe, a hose connected with the oil delivery pipe, a support for the hose ,when not in use, and manually controlled means for opening the valve operable only when the hose is removed from the support and automatically operated to close the valve when the hose is replaced on the support. 9. In a hydraulic oilstorage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank, a valve in the Water pipe, a pipe for delivering oil from the tank, a valve in the oil pipe, 7

an oil delivery hose connected with the oil pipe, a support for the hose when not in use, manually controlled means for opening both valves when the hose is removed from the support, and automatically operated to close both valves when the hose is replaced on the support.

10. In a hydraulic oil storage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a pipe for delivering oil from the tank, a valve in the oil pipe, an oil delivery hose connected with the oil pipe, a support for the hose when not in use,

a pivoted arm for opening and closing the oil valve, means operated by the arm for simultaneously opening and closing the water valve, a latch preventing movement of the arm to open the valves when the hose is on the support, a second latch for holding the arm in valve-opening position as long as the hose is not on the support, and means for releasing said second latch when the hose is re placed on the support to close the valves.

11. In a hydraulic oil storage and delivery system, the combination of a tank, an oil delivery hose receiving oil from the tank, a valve controlling the flow of oil to the hose, a pivoted arm for controlling the operation of said valve, a latch on the arm, a support for the hose when not in use comprising a base and a pivoted hook, a latch pin carried by the hook and designed to cooperate with the latch to hold the arm in valve opening position, cam faces on the base and hook cooperating to shiftthe hook and latch pin when the hose latch, and means for automatically swinging the arm to close the valve when the latch is released. 5

12. In a hydraulic oil storage and delivery system, the combination of a tank, an oil delivery hose receiving oil from the tank. a pipe forcondncting water underpressure to the tank, a valve in the water pipe, a support for the hose when not in use, manually controlled means for opening the valve, a latch for preventing operation of said means when the hose is on the support, and means for locking the hose on the support.

13. In a hydraulic oil storage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a pipe for delivering oil from the tank, a valve inthe oil pipe, an oil delivery hose connected with the oil pipe, a support for the hose when not in use, manually controlled means for opening both valves when the hose is removed from the support. and. automatically operated to close both valves when the hose is replaced on the support, the valve in the oil pipe. the hose. the hose support and the manual valve control means being assembled as a unit and mounted upon a panel.

14. A discharge unit for a hydraulic oil storage and delivery system in which the oil is stored-in a tank and discharged through an oil delivery pipe by water forced into the tank through a valve-controlled water pipe, which comprises a panel on which are mounted a section of the oil delivery pipe, a check valve therein, a. delivery hose. a support .for the hose when not in use. an oil control valve. a. ivoted arm for operating the oil control valve and the valve in the water pipe, and means on the, hose support for preventing movement of the arm when the hose is on the support.

15. An oil storage and delivery system. comprising the combination of a tank, an oil delivery hose receiving ,oil from the tank, means for discharging the oil from the tank and through the hose.- a support for the hose when not in use, and means for controlling the discharge means manually operable only when the hose is removed from the support and automatically operated to render the discharge means inoperative when the. hose is replaced on the support.

16. In an 011 ..torage and delivery system,

the combination of a tank, an oil delivery hose receiving oil from the tank, a source of pressure designed to be connected with and disconected from the tank, a support for the hose when not inuse, and manually controlled means for connecting the source of pressure with the tank operable only when the hose is removed from the support, and automatically operated to disconnect the source of pressure from the tank when the hose is replaced on the support.

17. In an oil storage and delivery system,

the combination of a tank, an oil delivery hose receiving oil from the tank, a source of pressure designed to be connected with and disconnected from the tank, a support for the hose when not in use, manually controlled means for connecting the source of pressure with the tank, and a latch for preventing operation of said means when the hose is on the support.

18. In an oil storage and delivery system, the combination of a tank, an oil delivery pipe, a valve in the oil delivery pipe, a hose connected with the oil delivery pipe, a support for the hose when not in use, and manually controlled means for opening the valve operable only when the hose is removed from the support and automatically operated to close the valve when the hose is replaced on the support.

19. In an oil storage and delivery system, the combination of a tank, an oil delivery pipe, a valve in the oil delivery pipe, a hose connected with the oil delivery pipe, a support for the hose when not in use, a source of pressure designed to be connected with and disconnected from the tank and means for automatically closing the valve in the oil delivery pipe and disconnecting the source of pressure from the tank when the hose is placed upon the support.

20. In a hydraulic oil storage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a pipe for delivering oil from the tank, a valve in the oil pipe, an oil delivery hose connected with the oil pipe, a support for the hose whennot' in use, and means for automatically closing both valves when the hose is placed upon the support.

- '21. In an oil storage and delivery system, the combination of a tank, asource of pressure designed to be connected with and disconnected from the tank, an oil delivery pipe,

a plurality of branch pipes leading from the oil delivery pipe, a valve in each branch pipe, a hose connected with each branch pipe, 9. support for each hose when not in use, and means for automatically closing any valve when the corresponding hose is placed upon its support, and also disconnecting the source of pressure from the tank provided no other hose is in use; 7

22.- In a hydraulic oil storage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank,

a valve in the water pipe, a pipe for deliver-.

ing oil from the tank, a plurality of branch pipes leading from the oil delivery ipe, avalve in each branch pipe, an oil elivery hose connected with each branch pipe, a support for each hose when not in use, and means for automatically closing the valve in the branch pipe to which a given hose is connected when that hose is replaced on the support and'also the valve in the water pipe, provided no other hose is in use.

23. In a hydraulic oil storage and delivery system, the combination of a tank, a pipe for conducting water under pressure to the tank, a valve in the water pipe, a pipe for delivering oil from the tank, a plurality of branch pipes leading from the oil delivery pipe, a valve in each branch pipe, an oil deivery hose connected with each branch'pipe, a support for each hose'when not in use, manually controlled means for opening the valve in any given branch pipe and the valve in the Water pipe when the hose connected to that branch pipe is removed from its support, and automatically operated to close the valve in the branch pipe when the hose is replaced on the support, and also the valve in the water pipe provided no other hose is in use.

In testimony whereof I aflix my signature.

\VILLIAH J. PETER.

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