US1311035A - Planooraph co - Google Patents

Description

D. BEHTHELO'T AND H. 1. F. GUILBAUD.`

' PUMP.

APPLlcAloN FILED FEB.I1. |919.

1,3 1 1,035. Pafemed'July 22, 1919.

THB COLUMBIA PMNOURAPH C0., wAsHxNuToN, D c.

A,at Paris and Meudon, Republic of France,`respectively, have in- `and the like,

UNITED sTATEs PATENT oEEmE.

DANIEL BERTI-IELOT, 0F PARIS, AND HENRI J'.l F. GUILBAUI), OF MEUDON, FRANQE.

PUMP.

Application led February 11, 1919. Sera1No.i276,426.

To all whom z' may concern:

Be it known that we, DANIEL BERTHELoT and HENRI JEAN FREDERICK GUILBAUD, both citizens of the Republic of France, residing Seine et Oise, in the vented a certain new and useful Pump,of which the following is a specification.

This invention relates to anv improved suction and delivery pump capable of operating in any position and adapted for use with any kind ofliquids.

The pump of this invention delivers, proportionately to the `speed at which it is operated, a strictly regulatedvolume of liquid: further theoutput of liquid may be stopped, increased or diminishedduring the working of the pump lever.

The improved pump is particularly applicable in all cases where great regularity is required, more particularly with a small output. It may be employed in installations requiring a circulation of as well as for feeding petrol,- paraflim-heavy oil,-`motorspirit and the like. Itis also adapted to be used for regulating the concentration of baths in chemical operations. y

' It is obvious that the dimensions of the constituent parts of ths pump may `vary according to the purpose to which it is applied and the nature of the materials employedin its manufacture may be varied as desired. For chemical products it must be made so as not to be attacked by these latter.

The invention is more particularly illustrated with reference to the accompanying drawing, which is a part sectional `view of one form of the improved pump.

The driving shaft 1 operates the pump by means of a cam or eccentric 2 through a connecting rod 4 which communicates a relever 3 pivoted i The piston I has a part `z' which moves into Specication of Letters Patent.

by the operation of a simple s water, oil, acids Patented July 22, 1919.

the piston D. This part z' is provided with a slot l through which passes a pin E the ends of which are xed in the wall of the piston D. Between this latter and the piston I a helical spring C is arranged which is always 1n compression.

The space F existing between the pistons D and I constitutes the delivery chamber ofthe pump, and may communicate on the one hand with the delivery pipe V, which has a non-return valve R controlled by a compression spring 1'. It also communicates by means of ports Gr with the interior ofthe piston I. These ports may be uncovered or closed in order to permit or interrupt this communication by the operation of a closing member J controlled by spring K.

The spring K abuts against a ca e K1 arranged near the suction port X and 1n the i interior of which two valves are arranged viz a suction valve M with a spring m and a valve T with spring t enabling the liquid to be forced to the feed reservoir as will be hereinafter explained.

Between the body of the pump and the cage K1 a washer L is interposed intended to limit the downward course `of the piston I. The working 2of the improved pump will now beeasily understood.

In the accompanying drawing, the movable parts of this pump are shown in the position which they occupy at the end of a ydelivery stroke and at the commencement of a suction stroke.

f The lever 3 actuated by the control mechanism draws the cap or butt end A and the piston D outward which moves away from the piston I until the pin E, sliding in the Islot 1, comes in contact with the bottom of the latter which is near the end of the parti ofthe piston I.

From this moment the piston I exactly follows the `movement communicated to the piston D, and, yin being displaced, it removes completely the ports G from the closing member J.

During this period the liquid is drawn up the pipe X which is in communication with the feed reservoir, and passes through the cage K1, flifting the valve M, through the interior ofthe piston I and fills the space F constituting the delivery chamber of the pump.

The suction stroke is then terminated and a delivery stroke commences. The lever 3 presses the cap A and the piston D toward the interior: the spring C, act'ng on the part vl, at the same time moves the piston I in the same direction. This latter first bears against the plug J which is displaced in its turn, compressing the spring K and closes the ports Gr thereby interrupting communication between the feed and the delivery chamber F. The movement of the pistons D and I continuing, the latter then bears against the washer L. At this moment the actual delivery commences because the piston D, in approaching the piston I, expels the liquid retained in the chamber F forcing it through the v( lve R in the pipe V The delivery7 period being completed, a fresh suction period is produced and so on in succession.

It should be noticed that during the suction stroke an excess of liquid passes through the cage K1, while during the first portion of the delivery stroke, when the pistons D and I are returning together, this excess of liquid is forced back toward the feed reservoir,

through the said cage K1 the valve T of which lifts for this purpose.

It is evident that to any given stroke of the piston D regulatedby the movement of the lever 3, there will be a corresponding Volume of liquid delivered and one which is equzl to the difference of capacity of the chamber F, considered at the moment when the piston I comes in contact with the washer L and the capacity at the end of the actual delivery.

By varying the stroke of the piston D, the output of the pump is varied at the same time, proportionately to the speed imparted by the control mechanism to the lever 3.

The accompanying drawing shows, by way of example, one arrangement whereby the stroke of the piston D and consequently the output of the pump, can be varied at will and at any moment by simply operating` a lever Q it being evident that any other suitable method of carrying this out may be adopted instead and in place of this arrangement.

By means of this lever. Q, the position of the shaft 5 about which the lever 3 which actuates the pump pivots, may be changed. By moving the points 5 and 6 toward one another the stroke of the piston D is reduced and consequently the output of the pump: on the contrary by moving these points apart the stroke of the piston D is increased and also the output of the pump.

Tc attain this object, the shaft 5 is carried on a sleeve 7 which is adapted to slide along the lever 3 and is mounted freely in a support 8 having socket 81 sliding on a fixed rod 9. The operating lever Q is pivoted on the one hand to the socket 81 and on the other hand to a connecting rod l0 movable about a fixed point 11.

It is evident that on a displacement of the lever Q, in one direction or the other, a corresponding displacement, in the same direction, of the supporting socket 81 and consequently of the shaft 5 on which the lever 3 is pivoted, will take place.

This arrangement maybe combined with the pump to be integral with it.

lFrom the above, it is evident that the plug J, subjected to the action of the spring K, must be regulated so as to close the ports G a little before the piston I has come in contact with the washer L. This adjustment can be effected by means of nuts N. In its raction the plug J may play another part to that which has been hereinbefore assigned to it. In fact it constitutes an actual safety valve, the pressure of the spring K being consequently regulated in case the delivery port V should be closed for any reason. In this even, the Aliquid contained in the delivery chamber F, when the pistons D and I approach one another, will lift the plug J and be forced back toward the feed reservoir. y

In certain cases it may be necessary to place the delivery pipe V in direct communication with the feed pipe X. In order to attain this result with this improved pump, it is suiicient to lift the plug J from its seat. For this purpose, a button or stud U is provided actuating, by means of a rod u passing through a stuffing box P, a cam O intended to act on a small plate o carried by the rod or stem j of the plug J. Owing to this arrangement by suitably operating the stud U, the plug J may be displaced so that the ports G are always uncovered even when the pump is at the end of a delivery stroke.

When the feed reservoir is under pressure or is at the same level or even at a level slightly lower than that of the pump, the cage K1 and its valves M and T may be dispensed with without affecting the proper action of the pump.

The improved pump may be completed by the addition of an air chamber S, arranged on the delivery pipe V, to regulate the output and to convert anintermittent delivery into a constant delivery.

The improved pump is very suitablefor feeding petrol or other like motors, the de livery pipe V being simply connected with a nozzle or vaporizer and thus the feed of several cylinders with a single pump may be insured. The pump being a suction pump enables the motor or motors to be fed with a reservoir placed at .a lower level without it being necessary to place thisreservo-ir under pressure. This arrangement may be applied to existing motors without introducing any modification therein.

vVhile the pumps at present employed do not give satisfactory results for a small output, this improved pumpfhasa great ad* vantage of furnishing with absolute regularity a ,veryvlsmallidelivery of liquid or a very largeone, as desired, with an invariably strictly regulated output, owing to the combination of two pistons of unequal stroke, this combin-ation 'beingl -such I that even 4with a maximum output a greater volume of liquid is aspirateduthan the volume of liquid delivered,`the"`ei'cess of a'spirated'liquid being automatically returned to the feed resen' voir at each cycle of action of the pistons.

The improved pump acts after the manner of a pump with a plunging piston, which insures its correct operation, in spite of the wear which may be produced after a time in the pistons or on the walls.

This pump does not require lubrication.

We declare that what we claim is zl. A pump comprising in combination a casing, a delivery piston therein, -a suction piston connected with lost motion to said delivery piston and means to reciprocate one of said pistons.

2. A pump comprising in combination a casing, a delivery piston therein, a suction piston connected with lost motion to saiddelivery piston and means to reciprocate the delivery piston.

\ 3. A pump comprising in combination a casing, a delivery piston therein, a suction piston connected with lost motion to said delivery piston and means to adjust the strokes of said pistons.

4. A pump comprising in combination a cylinder, a pair of pistons in tandem therein, lost motion connection between said pistons, means to reciprocate one piston and delivery and suction passages connected to the-bottom of the two pistons respectively.

5. A pump comprising in combination a cylinder a pair of pistons in -tandem therein, a lost motion connection between them, a spring connection between them, inlet and outlet passages connected to the ends of said pistons, and means to reciprocate one of said pistons.

6. A pump comprising in combination a cylinder a delivery piston therein, a suction piston in tandem with it and having transfer passages in it, a delivery passage connected to said cylinder, a spring loaded valve cooperating with said transfer passages when the suction piston moves against it, an inlet passage connected to the cylinder at the bottom of the suction piston and means to reciprocate said delivery piston.

7. A pump comprising in combination a cylinder a delivery piston therein, a suction pist-on in tandem with it and having transfer passages in it, a delivery passage connected to said cylinder, a spring loaded valve cooperating with said transfer passages when the suction piston moves against it,

8. A pump comprisingfin combination a cylinder a delivery piston therein, a suction piston in tandem with it and having transfer` passages in it, a delivery passage connected to said cylinder, a spring loaded valve coperating with said transfer passages when the suction piston moves against it, an inlet passage connected to the cylinder at the bottom of the suction piston, a cage in said delivery passage, one way valves opening in opposite directions and mounted in said cage.

9. A pump comprising in combination a cylinder a delivery piston therein, a suction piston in tandem with it and having transfer passages in it, a delivery passage connected to said cylinder, a spring loaded valve cooperating with said transfer passages `when the suction piston moves against it, an inlet passage connected to the cylinder at the bottom of the suction piston and means to remo-ve said spring loaded valve permanently out of range of said suction piston in its stroke.

1.0. A pump comprising in combination a v lcasing a delivery piston therein, a suction piston connected with lost motion to said delivery piston, a lever, a reciprocating element connected thereto, a pivot carrying said lever, means connecting said lever with a piston, a slide, and means to displace said pivot along said slide to alter the effective length of said lever.

13. A pump comprising in combination a casing, a delivery piston therein, a suction piston connected with lost motion to said delivery piston, a lever of the second order, a reciprocating element connected thereto, a pivot carrying said lever, means connecting said lever with a piston, a slide, and means to displace said pivot along said slide to alter the effective length of said lever.

14. A pump comprising in combination a casing, a delivery piston therein, a suction piston connected with lost motion yto Vsaid delivery piston, a lever, a reciprocating eley inent connected thereto, a` pivot carryingy 1919, in the presence of two-subscribing Witsaid lever, means connecting said lever with nesses.

a piston, a slide, and means to displace said pivot along said slide to alter the effective JBEFRTIEUD length of said lever, and a pivoted control handle displacing said pivot along said slide. Witnesses:

In Witness whereof, We have hereunto ALPHONSE STEFAN, signed our names this 21st day of January JOHN F. SIMONS.

Copies of this patent may be obtained for ve eents each, by addressing the Gommissiner of Iatents, Washington, D. C.

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