USRE14244E - John b - Google Patents

Description

Original No. 1,142,822, dated .Tune

UMTED srATEs PATENTOFFICE JOHN IB. GRIFFIN, OF NEW BRITAIN, CONN EC'IIICUT,v ASSIGNOR TO LANDERS, FBABY & CLARK, 0F NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON'NECTICUT.

PEBCOLATOiR-PUMP.

lator-Pumps, and declare the following to K be a f-ull, clear, and exact description of the same, such as will enable others skilled 1n the artto which it pertains to make and use the same, reference being had to the accompanying drawings, vwhich form apart of this specification.

My invention relates to percolator-pumps for coffee pots, etc., and consists; 1n the structure, arrangements, and combinations hereinafter described and claimed. 1 In the drawings Figure 1 is a partial vertical section of a receptacle such as a coffee pot adapted to be heated at the bottom by electrical means or otherwise and containing my invention.

and base of the'l receptacle contamm -it showing the valves hereinafter descri ed, in the closed position. Fig. 3 is a similar vertical section ofthe same parts but with 'the valves in the open position. F ig.' 4 is a cross section on the line X-f-X of Fig. 2. Fig. 5 is a 'vertical section of the valves at right angles to that of Figs. 2 and 3.

In the drawings similar letters refer to similar parts.

In the drawings A i-s the body of a 'vessel containingA my improvement usually that of a coffee pot.

B is the base thereof and which in itself is adapted. to be heated, but as such means of heating especially'electrically are old and in common use, it 1s entirely unnecessary to either illustrate or describe them. It suffices to say that the heat is supplied to the base B.

C is shading representing the liquid in said receptacle A.

D is the percolator pump.

E' is the receptacle to receive the liquid from the upper end thereof.A As there is nothing novel and as it constitutes no part of my invention in the particular feature illustrated by E, it is unnecessary to 'describe it. i

My invention resides inthe construction shown in Figs. 2,3, 4 and 5. In this con- Fig. 2, isf'a vertical section g of the lower part of the percolator-pump 'but they are capable of being wardly in the-position shown-1n Fig. 3, 'so that the orifices -H- and H' lare open.

Specification of Beissued Letters Patent, Reiggued Jan, 9, 1917.

s, 1915, serial 110.324,351, filed March 1s, 1914. Appiicati'on for 'reissue mea Apr1119,1916. serial No. 92,318. l r

struction Dis the wall of a lower part of a pump which is suitably `erected upon a base piece F. This extends belowthe -bot- Vtom ofthe receptacle A and forms a chamber for liquids .at G. Two perforations H- Vand' H" are made .upon either side of 'theA wall D', which perforations are normally cevv closed by valves, which are marked J J',

of a peculiar shape and operation. The form of the valves J, J is illustrated inthe four Figs.- 2, 3, 4 and 5. Each valve consists of a semi-circular piece adapted to fit closely4 v in the circular interior of the .part D', so

closely .as .to be practically liquid-tight, and when adjacent to and covering the holes H, I-I', prevents lthe escape of liquid thereview of their weight would be' that'shown.

in Fig. 2 with the -orifices'H and H' closed, forced in# .7`0 through. Each'valve has two depending l vlegs of a curved shapeasshown at VK, K,

'will be observed that the valves J, J', are

'held in this position as shown in Fig. 2

by their gravityasthey are supported upon the pin M, and that theyl are caused. to swing inwardly by a force which must overcome this gravitational tendency to hold the position shown in'Fig. 2. When the rev liquid therein expands "and is of course pushed upwardly. As the liquid is expelled from the lower end or receptacle G,

, more liquid enters bythe opening of the valves', and the process is repeated. Liquid thereupon is forced out' from the upperfend of thel tube D against the top A of the receptacle A and falls into the receptacle E.

As a result of this arrangement of the valves andthe position of their support v'relative to the well or chamber g and the orifice h, the tendency of the normal operation of When this liquid is heated by heat ap-l z plied to the lower partof the receptacle, the

the pump is to close the Valve tightly against the orifice as the liquid expands and moves upward from the well, thus maintaining the valves in proper position during this period to prevent the escape of I the hot water or steamthrough the orifice` Thus a very efficient percolator pump is produced, one that it easy to take apart and clean, and one that is practically not liable to get out of order.

I vclaim as my .invention l. In a percolator pump, the combination.

of a vertical tube provided with an orifice in its side 'and valve comprising the part of a tube adapted to fit the inside of said tube and having a depending leg or stem projecting angularly from the tubular part, and means near the center of the tube for pivotally supporting the free end ofthe leg or stem, the center. of gravity in the entire valve being so locatedthat the valve norf mally rests against the inside o--the tube and closes the orifice, substantially as described.

.2. In a percolator pump, the-combination of a vertical tube provided with' oppositely disposed orifices, a pin running crosswise of the tube near its axis, said pin being located below said orifices, and a pair of part tubular valves, each provided with an angularly extending and depending leg or stem pivotally mounted on said pin, the center of gravity ofthe valves being .so arranged as to normally ycause the valves to hold against the inside of the tube and-close the.

orifices. v

3. In a percolator pump, a well, an lnlet thereto, anv outlet therefrom, a valve for said inlet located in the path of movement to the outlet, and a supportv for said valve located between thebottom of said well and said inlet.

4. In a percolator pump, a chamber having an orifice in its side wall, avalve located Within said chamber' and gravity-actuated to normally close said orifice, and a support upon which said valve is free to rock located between said orifice and the bottom of the chamber, whereby the upward movement of the contents of the chamber acts upon and tends to close said valve against the orifice. A

5. In a `percolator pump, a vertical tube provided with an orifice, a closure for said orifice within said tube, a. well below the orifice, circumferential extensions from the lower edge of both sides of the closure terminating at substantially opposite points, and supporting means on said tube between' the bottom of said well and said orifice and with lwhich said extensions are engaged.

. l6. In a percolator pump, a vertical tube, supporting points on the inner surface of said tube substantially opposite one another, an orifice in said tube above said supporting points, a well below said supporting points, a closure for the orifice, and oppositely disposed extensions at the lower part thereof carried by and rocking on said supporting points.

JOHN B. GRIFFIN.

Witnesses:

B. W. CLARK, M. W. SANDERSON.

Images