Untitled record

(No Model.)

8. GIL.

PUMP.

Sheets—Sheet 1.

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(No Model.) 2 Sheets-Sheet 2.

8. GIL.

PUMP.

No. 356,997. Patented Feb. 1, 1887.

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United States Patent Office.

SIMEON GIL, OF BORDEAUX, GIRONDE, ASSIGNOR TO THE SOCIETY castanon; menendez &amp; gil, of parts, France.

pump.

SPECIFICATION forming part of Letters Patent No. 356,997 dated February 1, 1887.

Application Sled September 4,1866. Serial No. 212,701. (No model.) Patrate 1 in France February 17,1686, No. 174,133.

To all whom it may concern:

Be it known that I, Simeon Gil, a citizen of the French Republic, residing in Bordeaux, Department of Gironde, France, have in5 vented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to pumps wherein a flexible diaphragm is used in placeof apiston. io It is the subject of French Patent No. 174,133, dated February 17, 1886.

According to my invention I make the diaphragm of embossed india-rubber, preferably in conical form, and stiffened by rings of metal 15 or other material embedded in it. The rubber is also strengthened by layers of cloth or other textile fabric applied: to its surface, or interiorly. At its margin or circumference is embedded airing or pad, which facilitates 20 the making of a tight joint around the diaphragm. This diaphragm is clamped between the edges of the two opposite shells or parts of the pump chamber, which are preferably of approximately conical form, and the center 25 of the diaphragm is connected to a piston-rod, by the reciprocation of which the diaphragm is displaced to one side or the other. A valve may be placed in the center of the diaphragm?

The accompanying drawings show my in30 vention as applied to several different kinds of pumps.

Figure ! is a side elevation, partly in transverse section, of iny improved diaphragm or flexible piston in its preferred construction. 35 Fig. 2 is a vertical section of a double-acting force-pump constructed according to my invention, and Fig. 3isafrontelevationthereof. Fig. 4 is a view similar to Fig. 1, showing a modified construction of diaphragm. Fig. 5 ,40 is a side elevation, partly in vertical section, of a double-acting force-pump fitted with the diaphragm shown in Fig. 4. Fig. 6 is a side elevation, partly in section, of a fire-pump having two chambers, each provided with a 45 single-acting diaphragm constructed with a valve at its center; and Fig. 7. is an elevation, partly in vertical section, of a single-acting suction or force pump.

Referring to the several figures, the pump50 chambers are each constructed of two parts or shells,'A: A, which fit together at their, edges, clamping the diaphragm B between them. The shells are, by preference, of conical form, or approximately so.

G is the standardor base of the pump, which 55 may be in one piece .with one of the shells A, or be separate therefrom.

D is the inlet, and E the discharge.

T is the piston rod, and L the operatinglever. · 60

V V are the valves. .

Referring especially to Fig.l,the diaphragm B is made of india-rubber, with concentric or annular corrugations br ribs. Its center is preferably in a different plane from its edges,thus 65 giving it a conical form, or approximately so. When pressed out of this shape,it tends somewhat forcibly to return thereto. Embedded in the rubber are one, two, three, or more stiffening-rings b, b, of metal or other suitable 70 material. Around these rings the rubber is thickened or ribbed, and between them it is comparatively thin and flexible. The rubber is toughened by one or more layers of strong cloth or other woven or textile fabric, a «. 75 Two such layers are shown embedded in the rubber near its opposite surfaces. They may, however, be' upon the exterior of the rubber, and they may be one or more in number.

The margin or circumference of the dia- 80 phragm is provided with a ring, V, embedded in it, and around this ring the rubber is thickened or ribbed. The ring is preferably of metal, in which case it not only thickens the rubber, but also forms a stiffening for the cir- 85 cumference of the diaphragm.

The thickening or enlargement of the rubber near the edge of the diaphragm facilitates the -retaining of the latter in place when clamped between the two shells A A of the pump-cham- 90 bef. These shells have grooves or annular indentations extending around their flanged edges, and coinciding with the ribs on the diaphragm occasioned by the ring V, so that the edge of the diaphragm cannot be pulled out 95 from between the shells- A A by any pressure that may be brought to bear on the diaphragm in the pump-chamber. Thus the diaphragm is held securely without the necessity of passing bolts through the rubber. The shells A A 10ό are forced together by means of bolts or screws passed through perforated ears c c, formed on ·

356,997 the shells. The soft edge of the diaphragm⁴forms a pad or cushion for making a tight joint between the flanges of the shells A A. In the pumps shown in Figs. 2, 3, and 6 one of the 5 shells A has a flange, d, which extendsover and incloses the edge of the diaphragm, thus concealing it.

The center of the diaphragm is pierced with a hole which admits through it the piston-rod io T, as shown in Figs. 2 and 5, or with a larger hole in tvhich is set the seat of one of the valves, as shown in Figs. 6 and 7. In Fig. 2 the piston-rod has a flange, e, fixed on it, which comes against one side of the diaphragm, and ¹5 against the other side is placed a washer, f, which is forced toward the flange e by a nut,g, thus clamping the diaphragm firmly on the piston-rod. As the piston-rod is reciprocated back and forth the diaphragm is displaced at 20 its center and moved from one side of the chamber to the other, thus alternately expand^ ing and contracting the Spaces or divisions of the chamber on -either side of it,, as is well understood with reference to diaphragm25 pumps.

Pumps of this character have the advantage of absence of friction, and since there is no movement of a piston in a cylinder there is no necessity of the pump-cham'ber being turned 30 or smoothed interiorly. For the pumping of acids the surface of this chamber may be enameled.

The diaphragm shown in Fig. 4 differs from that already described in having a flat edge— 35 that is, the ring or cushion δ'is omitted. Fig.

shows a pump constructed with this diaphragm, which is clamped at its edges between the two shells A A by means of bolts or screws, which pass through, the flanges of the shells, 40 and also through the edge of the diaphragm.

It is best when using this kind of diaphragm to make the shells A A with an easily-rounded curve for the outer moving part §f the diaphragm to beftd over, as shown in Fig. 5. The 45 piston-rod T is here fastened to the diaphragm by collars e e, pressed together by wedges h h.

In Figs. 6 and 7 the diaphragm is shown with one of the valves V carried in its center. The seat of this valve is formed at one end of 50 a short tube, k, which is placed in the hole through the diaphragm. On one side is screwed a ring, m, forming part of an open spider, n, to which theendof the piston-rod Tisscrewed. On the other side is placed a washer, i, and 55 against it is screwed a ring, j, forming part of a spider, I, and to this spider is fixed a guiderod, Τ', forming a continuation of the pistonrod.

The mechanical details of the several pumps 60 shown will be readily understood, from the drawings, and require no description.

Pumps constructed according to my invention may be worked by hanfl or pow er, may be arranged at any depth, and, by virtue of my 65 construction of the diaphragm, may work under heavy pressures.

My pumps may be applied either as suction or force pumps, and for the pumping of corrosive chemicals and gritty water, for the forcing of air, and for many different purposes. 70

I am aware that diaphragms of rigid material-such as metal, celluloid, &amp;c.—have been made with parallel concentric annular crimps or corrugations, aud that such diaphragms have had their edges annularly crimped or 75 corrugated for engagement with the shells between which they are clamped.

I am also aware that a diaphragm of soft rubber has had its edge very slightly thickened to facilitate its* being clamped between the 80 flanges of the shells; but I am not aware that a rubber diaphragm has been made with annularly-thickened ribs, so that its concentric portions are alternately thick or rigid and thin or flexible; nor am I aware that a rubber 85 diaphragm has been formed with a ribbed or thickened margin, internally stiffened and forming an integral cushion for engagement with coinciding grooves in the flanges of the shells between which it is clamped. 99