US1386625A

US1386625A - Ice-machine

Info

Publication number: US1386625A
Application number: US233231A
Authority: US
Inventors: James B Johnston
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-05-08
Filing date: 1918-05-08
Publication date: 1921-08-09
Anticipated expiration: 1938-08-09

Description

I. B. JOHNSTON.

' ICE MACHINE.

APPLICATION FILED MAYB.191B.

PatentedAug. 9, 1921,

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Y ICE-MACHINE application med my s, 191s. seriarN. 233,231.

To all 'whom it may concern.'

Be it known that 1, James B. JOHNSTON, a. citizen ofthe United States, residing in the city and county ofyPhiladelphia, State of Pennsylvania, have invented a new and useful Ice-Machine, of which the following is a specification. l s

My present invention consists of a novel \ice machine rin which vacuum, absorbent, and freezing chambers are; employed and wherein provision is made to produce a vacuum in said vacuum chamber, the freezing chamber beinglsurrounded byiinsulating material.

It further consists of a novel construction and arrangement of a casing and its v cover, a novel construction and arrangement .of containers, and of a liquid tank, novel means for securing such parts in assembled position, and novel means for effecting a seal.

` Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description of my 1nvention. l

For thepurpose of illustrating my lnven-` tion, ,I have shown in the -accompanying vdrawing one form thereof which is at present preferred by me, since the same w1ll be `foundin practice to givesatisfactory and reliable results, although it is to be understood that the various instrumentalities o f which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instrumentalities as herein shown and described.

Figure 1 represents in side elevation an ice machine embodying my invention.

Fig. 2 represents a section on line 2-2 of Fig. 1.

Fig. 3 represents a section on line 3 3 of Fig. 2.

Fig. 4 represents, on an enlarged scale, a vertical section of a portion of the ice machine, the section being4 taken on substantially line 2--2 of Fig. 1.

Fig. 5 represents, in vertical section, a valve connection employed.

Similar numerals of reference indicate corresponding parts. Y.

Referring to the drawings,

1 designates the outer container of an ice machine, embodying my invention. lThis outer container is supported on a ring shaped base 2 secured to it 1n any desired S'peciication of Letters Patent.

Patented Aug.. 9, 11921..

manner. 3 designates an intermediate container which is spaced from the outer container and contributes to form with it a vacuum chamber 4. Both the outer container 1 and theI intermediate container 3 are preferably rounded at their bottoms and are connecte `with each other only at their upper ends and in such a manner as to seal the upper end of the vacuum 'chamber 4'. The construction employed to form such seal will best be understood by reference to Fig. 4. 5 designates a ring having below its upper end a laterally and inwardly extendlng flange 6 which forms a seat for a gasket 7 and is deflected downwardly and secured in any desired 'manner to the intermediate container 3. 8 designates a ring or collar which is externally threaded, and at its lower portion it is deflected downwardly and laterally to form a seat `for a gasket 9, and it is then deflected downwardly and secured in any desired manner to the inner face of the outer container 1. f

10 designates a layer of insulation which is disposed between the ring 5 and the collar 8. an'd such parts may be connected together, if desired, in any conventional manner.

11 designates an inner container spaced from the intermediate container and of the same contour and contributing with it to form a chamber 12 which isfilled with insulating materials 13 in a molded form and of a desired thickness.

Thelupper ends of the containers 3 and 11 are connected`by a ring shaped plate 14. 15 designates a water tank which @is preferably provided with double walls and as illustrated it is of rectangular contour so as to form with the inner container 11 a freezing chamber 16. 17 designates a pipe which extendsthrough. the side walls of the containers 1, 3 and 11 and is deflected upwardly to present its open end at the upper end of the freezing chamber 16. This pipe also has a branch 18 leading to a double acting vacuum pump 19 provided with an operatv Aing arm 20. The pipe 17A is provided with a valve seat 21 having a port 22 communicating with its open end and the branch pipe 18 and the valve seat 21 also has a port 23 communicating with the open end ofthe pipe 17 and with thelvacuum chamber 4. 24-designates a valve controlling the ports 22 and 23 and having its stem passing through a stuffing box and provided with a handle 25. rllhe cover consists of an outer shell 26, an intermediate shell 27, and an` inner shell 28, all of which are preferably of curved contour.

formed by the

shells

26 and 27. 30 d esignates an absorbent chamber formedby the

shells

27 and 28 and such absorbent chamber is lilled with hygroscopic material 31. The inner shell 28 is perforated 'or apertured, as

at 32, and the chamber 30 is closed by anannular plate 33,. r1`he vacuum chamber 29 is sealed in substantially a similar manner to that already described` with reference to the vacuum chamber 4. ,As seen in Fig. 4 the shell 27 has secured to it in any desired manner an internally threaded collar 34 having an inwardly extending flange 35 which is provided with an annular bead 36 which seats in the gasket 7 when the cover is secured in position. 37 designatesa ring shaped plate connected'with the outer shell 26 and provided with an outwardly extending flange 38 which has an annular bead 39v which seats in the gasket 9. A v

40 designates a layer of insulation'secured between the

members

34 and 37 in any desired manner. 41 designates an annulus secured to the shell 26 and adapted to extend over the joint formed between the body portion of the machine and its cover.

rlhe cover is provided with a grasping lhandle 42. .When the cover is closed the outer insulating chambers substantially surround the absorbent chamber and serve as insulation to protect the inner chamber from induction. If water is present and the vacuum is produced by actuating the handle 20 the temperature will lower as the evaporation takes place. Y.

It will be understood that when the vacuum pump is working the valve 24 is open and when the desired vacuum has been obtained the valve is closed, the result of which is evident to those skilled in this art.

It will `now be apparent that I have devised a novel and useful construction of i'ce machine which embodies the features of advantage enumerated as desirable inthe statel in the free'zin ing chamber and lower chamber of the closure and vacuum producing means communicating with the upper end of said freezing chamber and with said vacuum chamber. y

2. An ice machine, comprising a. plurality of casings spaced from each other and forming an outer vacuum chamber, a chamber inwardly of the vacuum chamber containing insulating material, a freezing chamber inwardly of the insulating chamber, a tank withinthe freezing chamber to receive the materialto be frozen, a closure having a plurality ,of superimposed chambers, the lower wall of which is apertured to permit communication between the freezing chamber and the lower chamber of the closure, and means to produce a vacuum in said tank and in said vacuum chamber.

l3.4m ice machine, comprising a body portion formed by a. plurality of casings which in turn form an outer vacuum chamber, an insulating chamber inwardly of the vacuum chamber, vand a freezing chamber inwardly of the insulating chamber, a tank chamber, a closure forsaid body portion orming a chamber above'said tank and in free communication with it, said closure having a chamber containing hygroscopic material in communication with said chamber containing insulating material and a freezing chamber inwardly ofthe insulating chamber, a tank in said freezing chamber adapted to be surrounded by a cool-v ing medium, a closure detachably connected -with said casings inclosing the upper. end

of said tank and said freezing chamber and provided with a chamber having its inner wall apertured, and vacuum producing means communicating with said vacuum chamber, said freezing chamber, the chamber of said closure and the upper en d of said tank. Y y

5. An ice machine, comprising a body portion, consisting of a plurality of casings spaced from each other and formin `an outer vacuum chamber, an insulating c amber inwardly of the vacuum chamber and a' 'freezing chamber inwardly of the-insulting chamber, a tank in said freezing chamber open at its upper end, said freezing cham-V chamber, a chamber inwardly of said vacuum berbeing open at its upper end, a', closure 130 for said body. portion, a pluralityof incommunica/ting With said Vacuum chamber sulating' members between said closure and and freezing chamber.

said body portion said' closure having a chamber containilig hygrosoopio Amaterial g JAMES B" 'JOHNSTON' and being provided with apertures com- Witnesses: p municating With said tank andl said freezing E. HAYWARD FAInBANKs,

chamber, and vacuum producing means l. v C. D. MGVAY.