US859752A - Pump. - Google Patents

Description

'No. 859,752. v PATENTED JULY 9, 1907. L. M. G. DELAUNAY-BELLEVILLB.

PUMP.. APPLICATION FILED NOV.19, 1000.

2 SHEETS-SHEET 1.

THE NORRIS PETERS ca., WASHING7ON, u. c.

No. 859,752. PATENTED JULY 9, 1907. L. M. e. DELAUNAY-BELLEVILLE.

PUMP.

APPLICATION FILED NOV. 19, 1906.

2 SHEETS-SHEET 2.

1n: mamas PETERS ca, WASHINGTON o c UNITED srAT s PATENT OFFICE.

LOUIS GABRIEL DELAUNAY-B'ELLEVILLE, OF NEUILLY, FRANCE, ASSIGNOR TO THE SOOIETE ANONYME DES AUTOMOBILES DELAUNAY-BELLEVILLE, OF SEINE, FRANCE, A

CORPORATION .OF FRANCE.

PUMP.

Specification of Letters Patent.

Patented Jur 9, 1907.

Application filed November 19, 1906. Serial 344,111.

a To all 'whom it may concern:

Be it known that I, LOUIS MARIE GABRIEL DE- LAUNAY-BELLEVILLE, a citizen of the French Republic,

residing at Neuilly, Department of the Seine, France, (and whose post-office address is 17 Boulevard Richard- Wallace, in the said city,) have invented-certain new and useful Improvements in or Relating to Pumps, of which the following is a specification.

This invention has for its object a pump by means of which it is possible to transfer a given quantity of liquid, and particularly a liquid of a viscous nature from one reservoir to another. These reservoirs may be situated either at the same or at different levels, and the operation of the pump takes place without the assistance of any cock, valve, or like device as it has been found that movable obturating parts are liable either to become stuck owing to the viscous nature of the liquid, or that leaks occur owing to the interposition of foreign matter between the obturating part and its seat.

The apparatus in accordance with the present invention is of general application.

In the accompanying drawing: Figure 1 is a diagram illustrating the two cases which may arise apart from equality of level between the two reservoirs. Fig. 2 represents a vertical section on the line XX of Fig. 3, through a pump intended to supply a lubricant to the gear case of the motor of a motor road vehicle.- Fig. 3 represents a horizontal section through the same on the line YY of Fig. 2.

Referring to the Fig. 1 the left hand or receiving reservoir S possesses a lower level than the supply reservoir E; on the right hand side, however, the re ceiving reservoir S is arranged at a higher level.

The system is operative if certain conditions of discharge and flow are fulfilled; the conditions of discharge are as follows: For the left hand side, that the volumeAof the pump is greater than the volumez'of the tube 0 which is situated above the level of the reservoir E; for the right hand side, that the volume A of the pump is greater than the volume 1" of the tube 0 situated above the level of the reservoir E. The condition of flow is that the height h (or k) is sufficient to enable the volume (A'i) or (Ai) to flow through the' The apparatus may also be applied to the intermittent decantation of given and approximately constant quantities of liquids of any kind, its greatest advantages being experienced with liquids of a viscous nature.

Referring now to Figs. 2 and 3. A piston a reciprocates in a pump body A and is moved back by the spring I) placed within the compartment B situated above the pump body. A compartment O is arranged beside the pump body -A and the compartment O and contains the tube 0 through which the oil passes at each stroke of the piston. The rod 1 is screwed into the piston aand carries a socket 2 which serves as a support for the spring b, through the intermediary of a collar 2 upon which the said spring is mounted. The other extremity of the spring bears upon a plate 3, fixed to form the bottom of the compartment B, and through which the rod 1 passes freely. On the top of this red a pedal 4 is provided which may be depressed by the foot in order to cause the descent of the piston a The compartment B is closed by a cover 5, the central elongated part of which serves as guide for the rod 1; the bottom 6 of the pump body A is prolonged projects below the compartment 0 in such a manner asv to form the conduit 7 and a plug D is screwed into the bottom of the compartment O. This plug D also forms a joint on the bottom 6 and which is screwed or brazed to it provided with orifices 8, 8 which place the tube 0 in communication with the pump. The compartment 0 is closed at its upper part by means of a screw plug 9 provided with an orifice 10 for the circulation of air.

The oil reservoir E to which the pump is firmly fixed by two flanges forming joints, is provided with a lid in which an air hole is found and is in constant communication with the pump body A by means of the rectangular conduit 6 and with the compartment B by means of the rectangular conduit e. The joints of the pump body A and of the compartment B with the reservoir E are formed on a level with the orifices e, e as shown in Fig. 3 as regards the conduit 6. Finally, the oil enters the gear case through the tube 11.

In the condition of repose, the piston or is above the conduit e, as shown in Fig. 2; the oil fills the whole of the pump body and descending by gravity through the conduit 7, passes through the orifices 8 of the plug D and rises in the tube 0 where the level is established at the same height as the level of the reservoir. The summit of the tube 0 being slightly higher than the maximum level in the reservoir no flow can take place; siphon action being also impossible, owing to the communication of the compartment G with the atmosphere through the orifice 10 By depressing the piston a, the entire quantity of lubricant contained in the cylinder and situated below the rectangular orifice e, is forced out and being discharged above the tube 0, descends into the compartment O, and flows into the gear case through the conduit 11. As soon as pressure upon the rod of the piston a ceases, this piston is raised by the spring b which has been compressed during the descent of the piston and resumes its upper position.

While the piston a is within that part of the cylinder A below the orifice c, the oil from the reservoir E flows freely above the piston is again raised, the conipartment B contains oil, the level of which is slightly higher than that of the reservoir. This oil returns to the reservoir through the orifice e as soon as its level attains this orifice.

The arrangement which has been described, avoid choking the gear case, a defect frequently caused by an ordinary pump provided with a non-return valve which closes under the influence of a spring, in the event of an impurity getting under the valve and pre venting the same from closing completely, as in this case the flow of oil is continuous.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

An apparatus for transferring a liquid in successive quantities from one reservoir to another, comprising a valveless pump divided into two compartments by a diaphragm, the lower compartment being in constant communication with the lower part of the suction reservoir, and the upper compartment being in constant communication with the upper part of this reservoir; the bottom of the pump body being provided with a tube opening at a higher level than the maximum level of the liquid in the reservoir, into a bell connected at its base with the transfer reservoir, communicating at its summit with the atmosphere, the lower compartment of the pump containing a piston, the rod of which passes freely through the diaphragm and is provided with actuating means substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

LOUIS MARIE GABRIEL DELAUNAY-BELLEVILLE.

Witnesses:

EMILE KLOTz, MAX on RIVAUD.

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