US814993A - Freezing device. - Google Patents

Description

' B. THOMPSON.

'- PATBNTED MAR. 13, 1906.

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` UNIT-Ei) *srA'rns i DATEN'I oFFioii FREEzlNG- DEVICE.

vNo. 814,993.

.Be -it known that l., lliuifinif citizen of the United States, and a resident of New Rochelle, in the county of Westchester and State of New York, haveI invented certain new and useful lImprovements in Freezing Devices, of which the following is a speciacter.

fication Myinv'ention relates to freezing apparatus, and more particularly to that adapted for the making of ice-cream. to providevane'fl'ectivev appar'atus of this char- Figure ll is a central vertical section through Fig. i is a detail in top plan view of the agitating mechanism. Fig. 3 is aview ini end'- elevation of one of the seraper-blades and its sup.

.porting-arm, and. l"ig.14 isa-broken sectional detail through a portion .of the refrigerating-'- r receptacle G, preferably of some such heatconducting material vas copper.

' introduction of .the 4desired freezing agencies.

- flow of thefreezing D i the can and are inclined both 5 5'* ing through which extends a threaded ex-v designated' by D Ihavehereillustratedacoil of pipe1l,througl1 lwhich a freezing lluidv may circulate.; Within the pipe may be placed baille projet-.tions I for the purpose of preventing the too-rapid luidv and to provide? increased abs'orl)ing-surface.

'Situatedin an annular recess edge of the casing is a cover C, whichis an opening over which operates a )ivotcd plate or closure l?. In the cover and 'in the bottom ofthe casing are alined axial openings in which are preferably inserted at one sideof v'bushin rs1) and 1).', respectively. J ournaledA in the? Vushing l) and passing through that secured a spider L, having .at vthe outervends: of its radiating arms scraper-blades J, coperating with the wall of` the can. y. These blades extend substantially the full lengthv ef. vertically lan d laterally. The-lateral inclination directs'the accumulating cream from 'the surface of the can in toward the center, while the vertical langularity forces said cream downwardly for the purpose which will be hereinafter de scribed.- The bushing D is shown as having a top wall in which is a contracted axial open- .tleinity 10 of the shaft E. To this threaded Its principal object is e. ithin a suitable. casing'B, which is shown' as supported upon legs A, is mounted a1 can Between the casing and can is a spaceto admitof the is` a shaftV E, upon which is Specification of Letters Patent. .ipp-raam tied my 26,1904. serial ia; 213,206.

i to the spider li.

44over which passesa'belt Il.

vThe slide is. preferabl leakage of thel contents.

In fuse the, sl1de.-;Vibelng-.closedand the. freezing fluid in circulation' through the pipe Patented March I3. 1906.

the cover a retaining-nut -11 hold the shaft against downward movement. Surroundilw the shaft is a sleeve N which extends fromlielow the bottom of the casing to a point adjacent 'lliis'sleeve 'fits closely within the bushing D', whicli'furnishes 'a bearing portion above for it, and is provided with a llangc l2, which is stepped upon the upper surface of the bushing to hold the sleeve against downward dis- -place'i'nent. From the mixing-blades M, which are inclined in the usual manner for the purpose of agitating the cream." f v 'lhe scraping andl mixing portions of the agitati'ng mechanism .are preferably rotated in o `posite directions by bevel-gears 0, ixed uponthe lower extremities of the sleevel and shaft and having meshing with them a similar gear P, fast upon a shaft 13. Power may be applied to this shaft 'by a pulley '.l, As illustrated, the pulley is normally loose upon the shaft, but may be caused to rotate therewith to effect the driving by means of a clutch R splined -upon the shaft and actuated by a'lever S,

tl iughin my invention this is immaterial.

In the| bottom of the canA at one/side of the sleeveaiid shaft of the agitating means is an oiening, from whicha conduit W extends tllirough the casing.. This opening may be controlled by a valve slideor closure V, op'.-

erating through a slot in the side of the casing in the upper and movable in' Ways above the opening.4

y provided with an in'- clined face 14, contacting with a portion of the waysand serving to raise the slide into close contact with the opening to prevent the The cover is then replaced, it. resting uponv the upper edge of the can, tightly closing the same, and thus being commonv to both recep tacles.- The agitating mechanism is startedfin rotation, its"direction beingsuch that the verticalin-` ,clinatien of the. scral'ierfblades will tend to force the 'material toward the bottom'of th el can. This c ontmlies until the proper condition 4is -attainedh its progress through the 'opening in the cover by moving -asidethe plate F, this giving ample space for observation, yet not admitting an apprecb.

sleeve radiate sets of II .the cover is removed andthe material to 1 be frozen poured intovthe can.

lOO

being noted rio.-

able amount ofheat nor .requiring the raising of the cover. To remove the .frozen material, it is only necessary to withdraw the slide, whereupon the agitating mechanism, and more particularly the scraperblades, will force the contents through the o )ening and along the conduit, at the end of w lich a suitable. receptacle may be placed to receive it.

The operation of "'reezi ng once having been bcgun it maybe practically continuous, since it is unnecessary to stop the rotationof the' agitating mechanism to permit the introduction of a new batch of the material. Instead, when the preceding batch has been ejected the valve is closed and the cover raised. The sleeve journaled in the bushing 1) now furnishes a bearing for the shaft E, both these elements being held against lateral movement. The can is again charged and the cover replaced, and the operation proceeds as before. 1t' should be noted that not only is uninterrupted freezing attained, but the gearing is so sltuated that it is whollyout of the way of the operator and may be freely lubricated without danger of the oil passing into the can and contaminatingits contents.

Having thus described my invention, Il claim as new and desire' to secure by Letters Patent" 1. In a freezing tion with a casing, of a receptacle mounted therein, agitatir'fer mechanism situated within tlunreceptacle, riving mechanism for said agitating mechanism located below the casing, and a dischar e-conduit leading from the lower portion of t e receptacle. l 2. `1n a freezlng apparatus, the combination with a casing,

of a receptacle mounted thereln, a rotatable sleeve extending through the bottom of the casing and receptacle and havlng a flange engaging the inner side of the bottom of the casmg, an agitator carried by the sleeve wltlnn the receptacle, a rotatable ing through the bottom apparatus, the combina! ceptacle and casing, and

'day of June, D.

tion with a casing, of' a receptacle mountedtherein a rotatable acitating-sleeve extendr rn ceptacle and reaching distance through said receptacle, mixin blades carried by the sleeve, a shaft exten ing through the sleeve, scraper-blades secured upon the shaft above the sleeve, and driving ate( but aportion of the ,mechanism for the sleeve and shaft loc below the easing.

4. An ice-cream of the casing and re-' freezer having an outerV easing, a reeeptzule located therein, a holder' for cooling means situated between the casing and receptacle, a hollow shaft passing vertically through the bottom of the casing and receptacle and revolubly mounted on the latter, an agitating device carried by the hollow shaft within the receptacle, a shaft extending loosely through the hollow shaft, an agitat r in connection with the secondname( shaft and within the receptacle, a removable hearing for the upper end of the agitator-shaft, gearing below the casing in connection with the two ently rotating the same, a discharge-chute extending through the lower part of the rea closure commanding the discharge-chute.

Signed at New York, in the county of New York and State of New York, this 22d EMERY THOMPSON.

l Witnesses: CHAs. L. WOLF,

M. BENDER.

shafts for independ

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