US331952A

US331952A - Albeet a

Info

Publication number: US331952A
Authority: US
Publication date: 1885-12-08
Anticipated expiration: 1902-12-08

Description

(No Model.)

A. A. DUBAND.

BREAST PUMP. No. 331,952. Patented Dec. 8, 1885.

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N. PETERS. Phofvulhngnpher, Wzihinztofi, 5. C2

ALBERT A. DURAND,

PATENT @rrioE,

OF NEW YORK, N. Y.

BR EAST-PU M P.

SPECIFICATION forming part of Letters Patent No. 331,952, dated December 8, 1885.

Application filed April 27, 1885.

Serial No. 163.497. {No model.)

To all whom it may concern.-

Be it known that I, ALBERT A, DURAND, of the city and county of New York, in the State of New York, have invented a certain new and useful Improvementin Breast-Pumps,

of which the following is a specification.

My invention relates to those breast-pumps which consist of a pump chamber or cup and a diaphragm fitted therein and having projecting from it a stem or rod,which maybe swung from side to side or canted to produce the operative movement of the diaphragm, the chamber or cup having connected with it a tube or passage provided at the outer end with a nipple-socket.

One important object of my invention is to provide for adapting the nipple-socket to different-sized nipples, and thereby avoid any distention of the nipple, which is caused if the socket applied thereto, is too large and which is extremely painful.

To this end my invention consists in the combinatiomwith a pump chamber or cup and its diaphragm, of a nipple-socket connected therewith, and a lining piece or thimble of flexible material provided in said socket and made of a size and shape to conform to and fit against the interior of the nipple-socket throughout the length of the lining-piece. These liningpieces may be of various thicknesses,according to the reduction of size in the socket required, and they may be removable, so that lining-pieces of different thicknesses may be introduced, or so that they may be placed one inside the other within the nipplesocket.

The invention also consists in the combina tion, with a pump chamber or cup and its diaphragm, of an inlet-tube attached to the exterior of the chamber or cup and extending along the bottom thereof to the inlet-opening, a nipple-socket rigidly connected with the outer end of said tube, and a connection between said nipple-socket and the outer or open end of the pump chamber or cup, whereby I produce a simple and strong apparatus wherein the pump chamber or cup, the inlettube, and the nipple-socket are connected to form one integral structure.

In the accompanying drawings, Figure 1 represents a sectional elevation of a breastpump embodying my invention, the nipplesocket being represented as provided with a single lining-piece. Fig. 2 represents a similar section of a pump chamber or cup and a taper nipplesocket, said nipple-socket having two lining-pieces inserted therein. Fig. 3 represents a section similar to Fig. 2, the nipple-socket being provided with a single liningpiece thicker than that shown in the other fig- 6o ures. Fig.4 represents asection of an inlet-tube and nipple-socket alone. Fig. 5 shows nipplesocket and tube attached to the pump.

Similar letters of reference designate corresponding parts in the several figures.

A designates the pump chamber or cup, which may be advantageously made of sheet metal, and which has at its bottom an inlet opening or perforation, a,through which liquid may enter it. To the pump chamber or cup is fitted a flexible diaphragm, B, of india-rubher or other suitable material, having an outwardly-extending head, I), at its upper edge, over which the edge portion of the cup A is turned inward, as shown at a, thereby securing the diaphragm in place.

B designates the center piece or body secured to the diaphragm. It has an outwardlyprojecting flange, b, which underlies the diaphragm, and ascrew-threaded shank or neck, upon which is secured a nut, b A washer, b is placed below this nut, and by tightening the not the diaphragm B may be clamped between the flange b and the washer b In the center piece or body, B, are holes or openings for the passage of fluid, and which are closed at their upper ends by a valve, 0, of any suitable construction. The not b has formed integral with it a handle or stem, 0, which may be swung or oscillated from side to side, and the canting action thereby produced will lift the diaphragm in order to produce an exhaustive action, and will then depress or collapse the diaphragm in order that the milk I D is rigidly connected, by solder or otherwise, a nipplesocket, D, thereby forming a tube and socket in one integral structure, and for the sake of greater security the nipple-socket is connected by solder or otherwise at d with the pump chamber or cup A. The nipplesocket D should be of a size large enough to receive the largest nipple, and I have represented it as provided with a lining piece or thimble, D which is to be made of india-rubber or other flexible material. One or more of the lining-pieces D provide for adapting the nipple-socket to receive nipples of different sizes, and this graduation in size may be obtained by providing lining-pieces of different thickness, any one of which may be placed in the nipple-socket I), or a nest of liningpieces adapted to fit one within the other, and providing for varying the size by replacing or removing one or more of them from the nippie-socket.

In Fig. 1 I have represented a lining-piece, D of medium thickness. In Fig. 2 I have represented two lining-pieces of medium thickness placed one inside the other, and both inserted into the nipple-socket D, and in Fig. 3 Ihave represented a singleliningpiece, D", of greater thickness. These lining-pieces, being made of flexible material, are thus adapted to readily conform to shape of the nipple, and when by them the nipple-socket is made of proper size to receive a particular nipple the exhaust action will be produced only on the end of the nipple, and will not cause painful distention thereof.

The connection of the lining-pieces with the nipple-socket may be made in any suitable manner. I have here represented the nipplesocket as flared outward at its outer edge, and the lining-piece D is extended outward over such flared portion, and turned backward and inward to cover the outer side thereof adjacent to the edge. This method of attaching the lining-pieces gives a soft and finished edge to a metal nipple-socket, and is therefore very desirable.

In Figs. 1 to 4, inclusive, I have shown the tube D as approximately L-shaped, with its side which is adjacent to the chamber or cup A flattened and soldered thereto throughout its length. In lieu of such specially-shaped tube,asimple round tube, I), soldered or tacked to the chamber only at the inlet-opening and at the lower corner, as shown in Fig. 5, may be substituted.

I am aware that the nipple socket or cup of a breast-pump has been provided with a rubber cushion consisting of a diaphragm sprung over the outer edge of the cup and having at its center an inwardly projecting tubular socket to receive the nipple; but in this construction the tubular flexible socket is entirely out of contact with the interior of the rigid cup, and does not conform in shape to and fit against the interior of said rigid cup. In my construction the flexible lining piece throughout its whole length conforms in shape to and fits against the interior of the rigid nipplesocket, and is supported and held against distention by the rigid nipplesOcket; hence when the pump is applied to the breast there is no distention of the lining-piece and nipple, and no painful effect on the person using the pump.

I am also aware that in order to secure a flexible connection between a rigid nipple-cup and the portion of the pump which rests against the breast adjacent to the nipple it has been proposed to stretch atubular piece of flexible india-rubber over the open end of the nipplecup and to have the outer end of such tubular piece of india-rubber turned outward over a ring of metal through which it passes. In this construction the ring of metal gives form to the outer end of the tubular piece of indiarubber, and the indie-rubber forms a flexible connection between the said ring and therigid nipplecup. In this construction the indiarubber does not conform in size or shape to the interior of the ring or the rigid nipplecup, and is not supported by them throughout its length. combination of parts in my invention.

What I claim as my invention, and desire to secure by Letters Patent, isi 1. In a breast-pump, the combination, with I do not desire to include such'a a pump chamber or cup and its diaphragm, of

a nipple-socket made of rigid material and connected with the inlet-opening of said chamber or cup, and a reducing lining-piece offlexible material, provided in the nipple-socket to adapt it to the size of a nipple, the lining-piece being of a size and shape to conform toan d fit against the interior of the nipple-socket throughout the length of the lining-piece, substantially as and for the purpose herein described.

2. The combination, with the pump chamber or cup and its diaphragm, of an inlet-tube and nipple-socket forming one integral structure, said inlet-tube being secured to the exterior of the pump chamber or cup and extending along the bottom thereof to the inletopening, and the nipple-socket being connected directly with the outer or open end of the pump chamber or cup, substantially as and for the purpose herein described.

ALBERT A. DURAND.

YVitnesses:

C. HALL, HENRY MCBRIDE.