US952030A - Freezer. - Google Patents

Description

G. F. DIOKSON.

FREEZER.

APPLICATION FILED JAILZQ, 1906.

Patented Mar. 15, 1910.

2 SHEETS-SHEET 2.

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{certain new and useful ln provemt-z fts Freezers, of which the following is a spec1-' ficat-ion. v

This invention relates to freezing apparatus for, the production of ice-creamand like flavored ices, and has for itsobject to provide a simple and eflicientstructuralarrangeme'nt'and combination ofpart's, where by'the formation "of the aforesaid frozen ices is attained-in a rapid, co1itinuous' and economicalmanner, and 'with which the material? from which such ices are formed is kept in constant movement during the operation to attain a uniform grade the finished product.

1, is a side elevation. Fig. 2, 1s a plan view; F ig. 3, is an enlarged fragmentary top view,

= with parts broken away to illustrate the instandardsflQ for the support of t ternal construction of the freezer 4, is an enlarged detail longitudinal section on line w-a2,-Figs 2 and 3. 5, is-a transverse section on line w-.m", 4. Fig. 6,

; niaiTED STA E J 'GEOR-GE F. DICKSON, OF CHICAGO, ILLINOIS, ASSIGNOB '.I.0v CONFECTIO CHICAGO, ILLINQIS, CORPORATION HILINOIS.

v Specification pf Letters Patent.

Application ma Januar aa 'iooea Serial No. geasca.

provide a closed freezing In the accompanying drawings: Figure is an enlarged detail transverse section on line 42 Fig. 4, illustrating a scraper blade and its accessories.

Similar numerals of references indicate:

like parts in,theseveral views.

Referring .to the drawings, 1v represents a base provided with aseries' of ugri hts or e ereinafter described 'casings of the freezin chambers, and for the carrying shaft of t e stir rers. etc. of the same.

3 is an outer cylindrical casing fixedly secured on saddles 2 at the upper ends of a set of the aforesaid standards 2, and preferably in a'direction inclined from the honzonfor the purpose hereinafter stated.

4 is an inner cylindrical casing arranged concentric relation within the aforesaid .cas ings vthrough which the cooled brine or outer casing 3, and attached thereto y nular end heads 5 and 6, of the usual flanged form shown. $uch construction provides a' closed annular chambervbetween the two other like cooling mediumds pumped as usual in the present class of cooling apparatus.

7. are a series of longitudinal partitions .diameter, and extends removal of the a tatin Patented Mamas, indie;

annular chamber, to divide the same into a series of sub-chambers or passages which are 8 is the inlet neck or pipe for the cooling" fluid, and 9 is the outlet neck for the same; such pipes areconnec'ted to the circulatingpump; by which the brine or like cooling medium is circulated in manner common to refrigerating apparatus.

,10' arid 11 are closure heads secured ina 1 arranged radially the above described detachable'manner to the respectiveends of;.--.--

the aforesaid inner cylinder or.casing 4*, to

cream or like material to be chamber: in the preferred form' of the present improvement has a much greater length than" in- 'a direction inclined from the horizon, as shown.

chamber for the frozen,and such In .the construction shown, the detachable connection of said closure heads 10'- and 11,

comprises interiorly screw t-hreaded margmal rims on said heads having engagement with correspondingly formed end portions 35 of the cylinder or casing 4, as shown more particularly in Figs. 3 and 4. With such arrangementaccess to the interior of the easing' for cleansing purposes, as well as for the described, is very. conveniently attained.

12 is'the inlet neck through which the ma- -terial to be frozen freezing" chamber aforesaid, and 13' is the outlet neck at the other end of said chamber for the outflow'or discharge of the frozen enters into one end of the material. Said outlet neck 13, is preferably downturned'asshow'n to. prevent splashing of-the frozen material, and is preferably carried by the end closure be removable therewith. w

14 1s a revoluble shaft arranged axially within the freezing-chamber and provided with a longitudinal series of-"-.beater" blades '15, which are preferably inclined to the \cir-, cula'rplane ofrotationof said blades, so as to tend 'to move the material toward the outlet neck 13 of the freezing chamber during. their. operation of heating or stirring the material. I 1

head 11 so' as to p g means hereinafter 9o 16 is a hollow shaft surrounding the aforesaid axially arranged shaft 14 and fitting and turning thereon. Said shaft 16 extends through a central orifice in the aforesaid closure head 10, and at its end within the freezing chamber and closely adjacent to the head thereof, is provided with a spider 17,

I to the outer ends of which are attached the y the bore of the collar 19 forms the bearing for the forward end of the axially arranged shaft 14, above described.

20 are a series of channel bars extending longitudinally within the freezing chamber and secured at their respective ends to the . aforesaid spiders 17 and 18. The longitudinal channels in said bars constitute containing cavities for the series of scraper blades by which the frozen material is removed from the inner circular wall surface of the freezing chamber, as fast as it accumulates thereon.

21 are the series of scraper blades above referred to. Each blade preferably consists of a number of sections placed end to end in the longitudinal channels of the channel bars 20 aforesaid.

22 are a series of springs arranged be tween the scraper blades 21 and the channel bars 20, and adapted to yieldingly hold said scraper blades in contact with the inner circular wall of the freezing chamber.

23 is a bevel gear attached to the rear end ofthe axial shaft 14 aforesaid, and 24 is a companion bevel gear secured to the hollow shaft 16 aforesaid, the said bevel gears being in separated relation as shown.

25 is a driving bevel gear meshing with the aforesaid bevel gears 23 and 24, and adapted to rotate the same in opposite directions, and attain a corresponding rotation in opposite directions of the beater blades 15 an the scra er blades 21; the reverse operation of said parts having from extended practical experience been found to materially aid in the production of ice-cream and other ices of the desired granular nature.

26 is a countershaft carryin the bevel gear 25, and provided with a driving pulley 27 for belt connection with a suitable power A material part of the present improvement consists in the arrangement of the freezing chamber, formedof a small diameter as compared with its length, in a fixed position inclined from a horizontal, with the inlet for the cream or like materials at liquid condition to the ordinary and natural condition of ice-cream, with an increase in volume from 35 to 60 per cent., .is utilized in a very effective manner in causin the movement of the materialthrough the freezing chamber, and a discharge through the outlet end thereof in a continuous manner of the frozen ice cream, such action'being aided in some cases by an inclined arrangement of the beater blades, as for instance, in cases where the composition used is incapable of taking on the granular nature of high grade ice-cream. Under ordinary conditions, however, such blades need only perform the functions of beating the material and forcing the sameout against the wall of thefreezing chamber.

Having thus fully described my said invention what I claim as new and desire to secure by Letters Patent, is

1. In a freezer, the combination of a casing, means for cooling the exterior of said casing, means for supporting the casing in a fixed upwardly inclined position, a closure head secured to the-lower end of said casing, a removable closure head secured to the upper end of said casing and provided with an outlet neck, an inlet neck connected to the lower end of the casing, rotary agitating means arranged in the interior of the casing and provided with a carrying shaft journaled in the aforesaid closure heads, and means for imparting rotation to said shaft.

2. In a freezer, the combination of a casremovable closure head secured to the upper end of said casing and pivoted with an outlet neck, an inlet neck connected to the lower end of the casing, rotary agitating means arranged in the interior of the casing and comprising two oppositely rotating parts, an inner and an outer one, the inner part having material engaging blades to move the material toward the circular inner wall of the casing and the other part provided with a material engaging blade having scraping'en'gagement with said inner wall of the casing, and meansv for rotating said parts in opposite directions.

Signed at Chicago, Illinois, this 27th day of January 1906.

GEORGE F. nIoKsoNJ Witnesses ROBERT Bonus, M. H. HoLMEs.

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