US633621A

US633621A - Ice-cream freezer.

Info

Publication number: US633621A
Application number: US71720499A
Authority: US
Inventors: William B Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-05-17
Filing date: 1899-05-17
Publication date: 1899-09-26
Anticipated expiration: 1916-09-26

Description

u'o. 633,62l. v Patented Sept. 26, I899. w. B. smm.

ICE CREAM FREEZER.

(Application filed May 17, 1899.)

(No Model.)

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NiTEn STATES PATENT OFFICE.

'WILLIAM B. SMITH, OF COLUMBIA, SOUTH CAROLINA.

ICE-CREAM FREEZER.

SPECIFICATION forming part of Letters Patent No. 633,621, dated September 26, 1899. Application filed May 17,1899. Serial no. 717,204. (NomodeL) To (tZZ whom, it may concern:

Be it known that I, WILLIAM B. SMITH, a citizen of the United States,residing at Columbia, in the county of Richland and State of South Carolina, have invented a new and useful Ice-Cream Freezer, of which the following is a specification.

This invention relates to ice-cream freezers, and more particularly to that class in which the cream and the freezing medium are bodily rotatable; and it has for its object to provide a device of this nature in which a number of different styles and flavors of cream may be simultaneously frozen with an extreme quickness and with a corresponding economy of time and freezing medium.

The invention consists of a box or casing having its opposite ends open and provided with watertight closures or lids for said open ends, which lids are preferably hingedly connected with an adjacent edge of the casing and have at their opposite edges hasps adapted to engage suitable holding means on the casing. Through the sides of the casing and transversely thereof is passed a supportingshaft provided with a turning-crank and having suitable bearings in a supporting-frame. Two horizontal partitions are arranged transversely of the casing, one at each side of the said shaft, and connected with each of the partitions is a second longitudinal partition extending to the corresponding open end of the box or casing. The partitions referred to are all formed of foraminous material and result in, dividing the easing into two upper and two lower compartments, all of which are equal. In each of the compartments is placed a quantity of a freezing medium, which I prefer to be finely-divided ice, with a suitable freezing mixture, and in this freezing medium I embed a number of cream-receptacles, each consisting of a preferably cylindrical casing having a cap or 'cover adapted to be fitted thereon with a water tight joint. These cream-receptacles are placed loosely in each compartment, and as the casing is rotated end over end the cream-receptacles have a universal motion within their respective compartments, resulting in a quick churning and freezing of the cream and effecting an extreme fineness and smoothness of the finished product.

In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a perspective view of my freezer mounted in its supporting-frame, a corner of the freezer-casing being broken away to show an adjacent foraminous partition. Fig. 2 is a section on line 2 2 of Fig. 1, the shaft and integral parts being shown in elevation. Fig. 3 is an elevation of one form of cream-holding can employed by me and having a cap or cover adapted to be held frictionally in place thereon. Fig. 4 is a similar View to Fig. 3, showing a different form of cream-holding can having a cap adapted to be held in place by screw-threads.

Referring now to the drawings, in operating in accordance with my invention I form a casing 5, comprising sides 6 and having its ends 7 normally open. The ends of the casing are adapted to be closed by covers 7 and and 8, which latter are hingedly connected at one side to the adjacent edge of a side of the casing and are adapted to lie upon the edges of the open ends of the casing with a watertight joint, secured by-means of a packing 9, arranged Within the cover and adapted for direct engagement with the edges of the easing. Hasps 10, pivotally connected with the covers, are adapted to engage correspondingly-arranged staples 11 upon the sides of the casing, after which engagement holdingpins 12 are passed through the staples, to prevent displacement of the hasps, in the usual manner.

Passed centrally and transversely of the sides of the casing 5 is a shaft 14:, having a crank 15 at one end, through the medium of which said shaft may be rotated to rotate the casing and its contents, said shaft being journaled in bearings 16 in the uprights 17 of a suitable supporting-frame of any desired construction.

lVithin the casing 5 and transversely thereof in planes parallel with the open ends of the casing are arranged two partitions 18 and 19, lying at opposite sides of the shaft 14, said partitions being of foraminous material, as

' the casing and adapted to be engaged by the packing of the adjacent cover when the latter is in a closed position. The result of this arrangement of the partitions is the formation of four equal compartments or chambers, of which the two upon each side of the shaft 14: are separated only by a foraminous wall or partition, while the couple of chambers at one side is separated from the couple at the other side by an interspace through which the shaft 14 passes, in addition to the foraminous partitions 18 and 19. Thus it will be seen that as the shaft let is rotated the casing 5 will be similarly moved, causing a revolution of the chambers within the casing about the shaft, or rather about the axis of the shaft.

In connection with the compartments or chambers of the casing I employ a number of cream-receptacles, of which one form is shown in Fig. 3 of the drawings and consists of a cylindrical case 25, having its base curved outwardly, as shown at 26, and provided with a frictionally-held cap or cover 27, having a flange 28, which extends downwardly of and in engagement with the outer surface of the case or body to such a distance as to establish a suctional holding in addition to the frictional engagement, and thus to prevent accidental withdrawal of the cover. In Fig. 4 of the drawings is shown a similar cream-receptacle comprising a case 30, whose bottom is curved outwardly, said case having its upper end screw-threaded, as at 32, to receive the corresponding threads upon the flange 33 of a cap or cover 34, adapted for engagement therewith.

In practice I place in the compartments at one side of the shaft 14 a freezing medium, which I prefer shall be finely-divided ice, and into this ice I place loosely a number of cream-receptacles containing the cream to be frozen and having their covers tightly in place to prevent both the escape of the cream and the entrance of foreign matter. The casing 5 is then reversed, the cover for the first-named compartments having been closed down and fastened in the manner above described, and the cover for the second compartments having been raised the saidsecond compartments are provided with a suitable quantity of finely-divided ice. A number of creamreceptacles are then thrown loosely into the compartments and a freezing mixture consisting of salt and water or of other ingredienis is contributed in suitable quantity. The cover is then closed down and fastened in place and the freezer is ready for operation. The casing is then rotated by means of the crank 15 or in any other desired manner, causing the cream-receptacles to charge backwardly and forwardly in their compartments with a universal movement, causing a quick melting of the ice and a correspondingly quick freezing of the cream, the freezing action be iug further hastened by the fact that the cream-receptacles are entirely surrounded by the freezing mixture. Moreover, this universal movement of each cream-receptacle causes a complete churning of the contents of the receptacle, throwing the cream from side to side and from end to end, effectively breaking up and disintegrating any lumps that may tend to be formed and resulting in a product of extreme smoothness and fineness. In the operation of my device I usually place, approximately, twenty-five of the cream-receptacles in each compartment, which receptacles are preferably about three inches long and two inches in diameter, so that when frozen the contents of the receptacles are in a form and size well adapted for serving.

It will be readily understood that in practice I may form the parts of my device of whatever material I may deem expedient and that in connection with the casing 5 I may use a cover of non-conductive material to prevent absorption of heat from the outside, also that I may vary the specific form and construction herein shown and described, without departing from the spirit of my invention.

Having thus described my invention, what I claim is 1. An ice-cream freezer comprising a rotatable casing divided into compartments through the medium of longitudinal and radial partitions lying at right angles to each other, and a cream-receptacle arranged within each compartment and being free of all connections whereby it is adapted for universal movement and to rotate bodily about the axis of the casing.

2. An ice-cream freezer comprising a rotatable casing divided into compartments separated by foraminous longitudinal and transverse radial partitions, and a cream-receptacle arranged loosely within each compartment and adapted for universal movement therein.

3. An ice-cream freezer comprising a rotatable casing divided into compartments having mutual communication throughout their adjacent surfaces, and a cream-receptacle within each compartment and having universal movement therein.

4:. An ice-cream freezer comprising a rotatable casing divided into compartments adapted for revolution bodily about the axis of revolution of said casing and having mutual communication throughout their adjacent surfaces, and a cream-receptacle arranged loosely in each compartment adapted for universal movement therein.

5. An ice-cream freezer comprising. a rotatable casing provided with compartments through the medium of longitudinal and radial partitions lying at right angles to each other and having perforations throughout 1 my own I have hereto aflixecl my signature their surfaces, and a cream-receptacle Within in the presence of two Witnesses. each compartment and free of all connec- VIIIIAM B SMITH tions, whereby it may have a universalmovet J J 5 ment in the compartment and rotate bodily about the axis of the casing.

In testimony that I claim the foregoing as Witnesses:

J. Ross OoLHoUN, THEODORE DALTON.