US534170A - mcgowen - Google Patents

Description

(No Medel.) 2 sheets-sheet 1.

R. MQGOWl-ZN. PUMP GUT-OPP -MPGHANISM PoR STAND PIPPS.

" 11e, 534,170. Peeeeted Peb. 12, 1895.

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, (No Model.) l 2 sheets-sheet 2.

' R. MGGOWBN. I PUMP .GUT-0111 MEGHANISM F011 sir-AND BIPBS. No. 534,170. Patented Feb. 12,1895.

` Y By l/IA-l ATTORNEYS.

Unire rares PATENT enten.

ROBERT MCGOVEN, OF .WASHINGTO N, INDIANA.` ,K

PUMP CUT-OFF ll/IECHANlSM FOR STAND-PIOPES.

SPECIFICATION forming part of Letters Patent No. 534,170, dated February 12, 189 5.

' Application md rebfumy 24., 1894. serial No. 501,350. (No moan.)

To @ZZ whom t may concern:

Be it known that I, ROBERT McGowEN, residing at Washington, in the county of Daviess and State of Indiana, have invented a new and Improved Pump Out-Off Mechanism for Stand-Pipes, of which the following is a specification.`

My invention relates to an improved cut voff mechanism for the pumping engines of stand pipes, which will serve to cut off the said engine when the water reaches the top of or any predetermined point in such pipe and which is automatically set in operation by the waterin the stand pipe as it rises above such point, or top of the pipe.

The invention also has forits object to provide electro-mechanically operated means, which, while serving to positively operate for their intended purposes, will, after having been set in operation, to cnt 01T the pump, automatically reset themselves to their normal position. y i

With other minor objects in View, my invention cnsists in such peculiar combination and novel arrangement of parts as will hereinafter'be first described in detail and then pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure l is a diagrammatic side elevation ofmy improved mechanism connected with a pump station and stand pipe., Fig. 2 is a Vertical section partially in elevation of the magneto operating mechanism hereinafter referred to. Fig. 3 is a similar view of the pump cut off valve operating devices. Fig. 4 is a horizontal section taken on the line 4-4 Fig. 2. Fig'. 5 is a detail view of the shifting valves in the cylinder water feed pipes. Fig. 6 is a detail horizontal section on the line 6-6 Fig. 3.

Referring to the accompanying drawings A indicatesthe stand pipe, and B the pump station, which are arranged in any well known manner. l

C indicates the overfiow pipe which is usually connected with the stand pipev near its upper end, and which extends to the base, where it discharges.

When pumping into a stand pipe, it sometimes happens, through negligence of the pump operator, or irregular pumping capacity, that the pipe overflows a considerable length of time before such fact becomes known to the pump operator, which overflow frequently causes considerable damage to surrounding property, as well as a great waste of water. This serious objection I overcome by the employment of the devices shown, and

vwhich consist essentially of -a cut oft' mecha anism proper, and intermediate adjusting devices operated by the water from the overiiow pipe, to hold such cut off mechanism in operation until the water in the stand pipe shall have receded below the overiiow point.

Referring now more particularly to Fig. 2 D indicates a supporting frame formed of the base D', the stay rods d cl and the cross heads d d2, the lower part of such frame being l0- cated in a Well hole DX whereby to bring such end in close proximity to a water supply pipe E, and to prevent freezing. f f

F indicates a cylinder projected up from the base and containing a piston G, the rod or stem Gr of which passes through the cap Yplate f of the cylinder, is projected as at g,

and provided with a counterweight gf, such upper end g being formed tubular for apurpose presently described.

Extended transversely under the base D is ploy the means most clearly shown in Fig. 5,

in which J, indicates a tubular pipe section held to rotate in the pipe H, and having its ends projected to receive oscillating levers Ky K, and provided with a longitudinal opening j which is adapted to be at all times in communication with the opening h, in the pipe Hand to be alternately moved into registerlwith the inlet and exhaust ports 'L' 71X in the feed pipes I I as shown.

By the construction described it will be readily understood that by oscillating the levers K in alternate directions, the water IOO will be let into the cylinder to raise the piston or to be drawn off therefrom to allow it to recede by gravity.

Within the tubular stem g is held to slide a central rod or operating bar L which is held to its upper or normal position by means of a bail portion l, on its upper end engaging a pivoted trigger arm M, which is held to its locked position by a bell crank tripper N, normally held in engagement with such arm M, by a retractile spring a, as clearly shown in Fig. 2, and adapted to be automatically released in a manner presently described.

The operating barLhas on one face a rack Z", which engages a pinion Z', on a shaft O, of an electric magneto or energizer O which projects into the magneto casing and gears with its rotary armature in the ordinary manner.

At one side of the main frame isheld a vertically movable catch pipe P, the upper end of which connects with the arm Nof the bell crank N, and has at such end a funnel mouth p, which is held over the lower end of the overflow pipe C. On the lower end of the pipe P is held a bucket PX formed in its bottom with a flap outlet valve px, which is lifted when the bucket is at its lowermost position by a stem p5, to let off the water held in such bucket.

It should be stated that the operating bar which engages the pinion O as before stated and which is also guided by a roller e, on its opposite side, asshown in Fig. 2, is adapted to drop by gravity when released, its lower end being guided in the hollow stern f, and in which, at the bottom, is a yielding piece g5, to cushion the said bar as it falls.

Q indicates an arm projected from the bar L, through which extends a rod R of a light flexible wire, formed on the upper end of a frame S the lower end of which is weighted as at s and formed into a socket portion s', in which is held for a limited free movement a push pin s2, such frame being normally suspended on a hook S2 on the main frame, and is guided at its lower end in aloop s3 as shown.

Projected at one side from the bar L, is a guide or arm T provided with atrip T which when the said bar descends, engages the cross member SX on the rod R, which is normally supported on the hook S2, and causes such member SX, through the tlexure of the rod, to slip from the hook S2 to allow the frame S to instantly drop.

When the parts are in their normal position the push pin s2, rests on the cross bar 7o, which connects one end of the levers K, and when in such position, it follows, that, when the bar L is released, it drops, and as it reaches its lowermost position its trip member T will move the frame S to move ofi from its support S2, and cause it to instantly drop by gravity, and as it thus falls it will swing the levers K to the position shown in dotted lines, such movement opening up communication between the cylinder and the water inlet pipes I I. A gravity operated frame U similar to frame S is disposed on the oppo site side of the cylinder, the push pin u of which rests on the cross bar 7c', and such frame is hung on a hook u' as shown.

V indicates a tripper projected from the tubular stem g, which engages the trame U when said stem is moved to the limit of its upper stroke, to allow such frame U to drop to oscillate the levers Kin a reverse direction, to cut off the water supply from the cylinder and open up a communication between it and the exhaust pipe sections 12.

The frame U is connected at its upper end with one end of a chain w, which passes over a guide pulley w and extends down through the trpper arm V and has a collar or stop tu? at such end, such construction providing simple means forbringing the frame U back to its upper position' as the piston G recedes by gravity.

So far as described it will be seen as water drops or flows out into the pipe C, and the water accumulates in the bucket on pipe P, such pipe will, as the weight in the bucket overcomes the tension of the tripper spring, pull the tripper away from the trigger arm that holds the bar L to allow it to drop, which movement imparts motion to the magneto shaft and energizes the magnet on the pump cut off devices presently referred to. The bar L in its descent operates to release frame S, which operates to open up a water pressure under the piston, which in turn rises and lifts bar L, and as the har is thus raised, its upper lateral arm Q will engage the head r on the rod R of the frame on the upper end of frame S and elevate it to engage its supporting hook. It will also be noticed that as the piston rises its arm V will carry the tripper V up until it engages the frame U, when such frame is disengaged from its supports, and as it drops its push pin will serve to oscillate the levers K to cut off the water pressure under the piston and release the water from the chamber. New as the piston returns to its lower position the chain w will be drawn down and the frame U lifted back to its place, thus resetting all the parts to their normal position. It should be stated however, that the water in the stand pipe sometimes rises or falls so irregularly and its upper surface is so agitated, that even after the bucket and pipe P have been depressed, it will continue to trickle over into pipe U. To this end in practice the tension ofthe trigger spring is such as to but slightly overcome the weight of pipe P and the bucket. I-[ence it follows that so long as any quantity of water trickles down pipe C and accumulates in the bucket, the tripper will be held from becoming automatically engaged by the trigger or supporting arm and so long as such arm is thus disconnected, the bar L and the piston will maintain an alternate reciprocating movement through the alternate shifting of the levers K, and thereby maintain, as it were, during such overtiow of the pipe, a con- ITO tinued electric circuit/to operatev to hold the pump cut oft' mechanism in a position for stopping the pump.

The -pump cut off devices proper, the construction of which is most clearly shown in Fig. 3, consist of a frame A having at its -lower end a base 0.5, on which is mounteda cylinder A5 with which are connected at the lower end hydraulic operating devices, constructed and arranged precisely similar to the hydraulic operating means for lifting the piston on the magneto operatingA devices, the upper end of the tubular stem 0.x on the piston A7 having however an additional lifting arm a5 for a purpose presently explained.

y B5 indicates a casing projected up from the cross head 0,5 in which is held to slide vertically a weighted sash frame B5, the upper end of which connects with a lift rod-b5 extended below the cross head, as at h5, and adapted to beengaged by the lifting arm a5, when the piston'A7 rises to its highest point. Pivoted in the casing B5 is a trip lever C5 the inner end ofl which forms a catch to receive a loop d5 on the upper end of the plunger rod D5, the lower end of which ts and is vertically movable in the tubular stem a", its drop therein being cushioned by a yielding packing a5 as shown. t

The trip lever C5 is normally held toits lockedposition by a bell crank lever E5, one end e5 of which-projects into frame B5, under its cross bar h5. p Y

F5 indicates a pivoted armature lever nor- .mally held drawn with its hook end inward by a spring f5, its lower end being held to .Operate over an electro magnet G5, while its\ upper or hook end engages a pivoted dog f5 which in turnengages a stud 117,' on the sash frame B5, as shown, and such frame is supported normally by the dog f5.l

H5 indicates an arm projectedl from 'the plunger rod D5, to which is bolted a rod l5 held to slide in a guide sleeve h5, held on the cross bar j5, which connects one end of the valve levers J5.

K5 indicates a sash like frame consisting of upper and lower cross pieces 705 h5, the upper one of which'connects with the upper end of the tubular stem ctx, while the lowerpiece extends under the cylinder vA5, and hassecured thereto an operating cable L5,y which passes under a guide Z5, and connects to hinged lever M5,which in turn is pivotally connected with a plunger or cut off valve N5 held to opcrate in the steam pump supply pipe O5, as clearly shown in Fig. 3.

By the construction shown vin such Fig. 3 it will be readily seen that when the velectro magnet` G5 is energized in the manner heretofore described, the armature lever will be drawn to disengage the dog f5 which thereby releases frame B5, and as it drops, it the frame B5, will ,engage the bell cranklever which holds the trip arm C5, and release such arm C5, and allow the plunger D5 to drop by gravity. AS such plunger descendsits rod I5 telescopes into guideJ sleeve h5, depressing they bar L thereby turning on the waterlunder" piston A7, which, then slowly'rises, raises the frame K5 and graduallycloses the valve N5.

The piston as it rises operates by means of its lateral arm Q5 a cut off and resetting device R5, constructed and arranged to operate precisely like that used in connection 'with the magneto operating. mechanism before described. The piston on its upward stroke also serves to reset the electrically operated tripping mechanism for plunger D5 by means of the arm a5 which engages with rod b5and carries it together with sash frame B5 to a position where B5 will engage with pivoted dog f 5. At

the same time loop d5 engages with its trip lever C5 thereby placing plunger D5 and sash frame B5 in their normal position.

After the water is drawn off fro-m under the cylinder A7 such cylinder will slowly drop by gravity and with it frame K5, which then leaves cable L5 slack, as the cut off valve N5 willbe held closed and packed by the steam pressure-against it, and until thev saine is again opened by operating the swinging lever M5 back to its outer position. f

Having thus described myV invention, what I claim, and desire to secure by Letters Patent, is'- l. In a pump cutoff mechanism for stand pipes, in combination with the steam supply pipe and'acut off valve operating therein, hy-

draulically operated means connected theremeans for moving it to its cut off position,an d

electrically operated devices including a' magneto or energizer for setting in operation such valve operating means, of a reciprocating barV connected with the magneto for operating it,

IOC

IIO

reciprocated in one direction by gravity, a

trigger mechanism for holding it elevated,

and a counterbalance device, arranged to be set in operation by the stand pipe overflow connected with the said trigger, adapted to release such trigger when overbalanced by .the overflow, all arranged substantially as shown and for the purposes described.

3. In a pump cut off mechanism for stand pipes, the combination with the cut o valve and electro mechanical means, including an.

,electro magneto, for operating such cut off valve, a reciprocating bar connected with the magneto shaft, operated in one direction by gravity, hydraulic means for operating it in a reverse direction, trigger devices for holding such bar normally elevated, a spring actuated pawl or lever for normally holding such IZO trigger locked, a countcrbalance mechanism connected with such lever, and arranged to be operated by the overflow from the stand pipe all arranged substantially as shown and described.

4. In a pump cnt olf mechanism for stand pipes, the combination with the cut oft valve and electro mechanical means for operating it,and a magnet or energizer,ot the magneto operating bar held to reciprocate in one direction by gravity, hydraulic means, set in operation by the descent of such bar, adapted to reciprocate such bar in a reverse direction and a trip mechanism arranged to be set in operation by the overflow from the stand pipe, connected with the magneto operating bar, all arranged substantially as shown and for the purposes described.

5. In a pump cut off mechanism for stand pipes, he combination with the cut off valve and mechanical means for operating it and a magneto, of a magneto operating bar held to reciprocate in one direction by gravity, hyd aulic means for reciprocating the said bar in a reverse direction, said hydraulic means held to engage said gravity bar and lift it to its elevated position, a trigger or holding pawl adapted to be automatically engaged by such bar as it is elevated, a counterbalance connected to such trigger operated by the overflow from the stand pipe, and tripper devices connected with the hydraulic operating means and connections between such tripper and the piston member of the hydraulic means, arranged substantially as shown whereby the hydraulic means are cut oft as the piston ascends, as set forth.

(i. In a pump cut off mechanism for stand pipes, the combination with the cut oiT: valve and electro mechanical means for operating such valve, including a magneto having an extended shaft, provided With a pinion, of a reciprocating bar, gravity operated in one direction, and provided with a rack member engaging the magneto shaft pinion, hydraulically operated mechanism connected with the bar, said mechanism means set in operation to elevate the gravity bar, by the drop movement thereof, a tripping lever, adapted to automatically engage the gravity bar and hold it normally to its elevated position, a counterbalance connected with such lever, andheld to be operated by the overflow from the stand pipe, and a valve cut oit mechanism for the said hydraulic means, set in operation by the lift movement of the said hydraulic mechanism means all arranged sub stantially as and for the purposes described. 7. In a pump cut ott mechanism for stand pipes, the combination with the cutoff valve, an operating frame connected therewith, hydraulically operated devices for operating such frame, a reciprocating plunger adapted to set in operation such hydraulic devices, and movable by gravity in one direction, trip devices for holding such plunger elevated, and electro mechanical-means for operating to release such trip devices,-all arranged substantially in the manner shown and described.

8. In a pump cut off mechanism for stand pipes, the combination with a cut off valve movable to its open position by hand, of clos ing mechanism connected therewith, consisting of a reciprocating frame, movable by gravity in one direction, a hydraulic means for moving it to its opposite direction, a plunger or drop bar adapted when released to set in operation the hydraulic devices, an electro mechanical tripper for holding the said bar normally to its upper position and valve shifting mechanism for the hydraulic means setl in operation by the upward movement of the plunger bar, and adapted to cut off the hydraulic means, al1 arranged substantially in the manner and for the purposes shown and described.

ROBERT MCG() WEN.

lVitnesses:

l. C. McGowan, EMIL GLASER.

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