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Publication numberUS1375397 A
Publication typeGrant
Publication dateApr 19, 1921
Filing dateJan 31, 1919
Priority dateJan 31, 1919
Publication numberUS 1375397 A, US 1375397A, US-A-1375397, US1375397 A, US1375397A
InventorsGeorge Lawrence
Original AssigneeWilliam Usher
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1375397 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


BUTTE-R COOLER. APPLICATION FILED JAN- 31. 1919 Patented'Apr. 19, 1921.

6*. Lawranc steer seine. j



T 0 all whom it may concern:

Be it known that T, GEORGE LAWRENGE, subject ofthe King of Great Britain, residing at 233a Henley Beach'lloath'lorrensville, Adelaide, State of South Australia, Commonwealth of Australia, have invented certain new and useful Improvements in Butter-Coolers, of which the following is a specification.

This invention relates to improvements in butter coolers and refers especially to that class of cooler having a covering of fabric which is kept moistened by water drawn by capillary attraction or absorption from a container in which it is partially immersed.

The object of this invention is to provide a butter cooler of extremely simple design which will fold up neatly into a small space when not required for immediate use and when opened out or extended will be sufficiently rigid to withstand moderately rough usage without collapsing. A butter cooler constructed in accordance with the invention is economical in construction and thoroughly efficientin operation and when not required for use it can-be folded up into a very small compass thereby permitting it to be packed neatly and sent by post or rail over long distances without fear of injury and at a very small cost.

I accomplish the abovementioned object by providing a butter cooler comprising a tray of earthenware or other suitable material for containing water, a. collapsible cover formed of a pair of rings or hoops or a ring and a disk having vertical connecting members, two or more pivoted members for forcing the rings apart and placing a tension on the connecting members, and a covering of absorbent fabric fitting over and around the frame constructed and arranged whereby when the cover is extended and the lower part i stood in the tray the interior thereof will be kept cool by the continual absorption of the water'by the fabric due to capillary attraction and the evaporation of the moisture therefrom.

In order that the invention may be readily understood reference will now be had to the accompanying sheet of explanatory drawings, wherein Figure 1 is a view in perspective of a butter cooler constructed in accordance with the present invention, the tray b i ghqwn in d tted lines.

Specification of Letters Patent.

.1 of the drawings.

Patented a e. is, 1921.

Application filed. January 31, 1919. Serial No. 274,233.

Fig. 2 is a view in perspective showing the frame ofthe cover in full lines in its extended position with the connecting members, and the absorbent fabric in dotted lines thereon.

Fig. 3 is a view in perspective of the frame showing it in its folded position.

Fig. 4 is a view inperspective of a detail in the construction of the frame.

'In these drawings the reference letter a indicates a tray of earthenware or other suitablematerial which for convenience of illustration is shown in dotted lines, see F ig.

The tray is adapted to contain water and fitting into the said tray is the lower part of a collapsible cover Zndesigned to fit over a dish containing the article to be kept cool. v

The cover is formed of a collapsible frame comprising a pair of' rings or hoops c and a pair of hinged or pivoted members (Z which are adapted to force the two rings apart against the tension placed upon two flexible connecting members 6.

The hinged or pivoted members (Z may be formed of U shaped pieces of wire hav ing their ends folded around the bottom ring and'their looped ends provided with slight depressions f.

The top ring is provided with a diagonally' disposed bar 9 and when the hinged members are swung into an upright position the depressions on their outer or free ends are brought into engagement with the said'diagonal bar and thereby force the tworings apart and apply a suflicient tension to the connecting members 6 toinsure a desired amount of rigidity to the construction.

The connecting members 0 can be made of articulated links of metal, straps of leather,

fabric or like material that will permit of The diagonal bar can be formed with a downwardly or upwardly curved portion j near each end and when the hinged members (,Z are turned upwardly the depressions f in the looped ends thereof are sprung past or into the curved portions 7' and are thereby prevented from falling or being accidentally turned downward, see Fig. l of the drawings.

The connecting members 6 are made just sufficiently long to insure a tension being applied thereto when the hinged members are swung upwardly and this tension insures the hinged members remaining correctly in position. v

.It will be obvious that the flexible connecting members 0 can be dispensed with when the absorbentcovering 72 is secured to the frame in such way that a tension will be placed thereon when the frame is. extended or when the hinged members are designed to keep the ends of the frame apart and more or less rigidly supported one above the other. y

In the drawings the frame is'shown made of wire but it will be readily understood that it can be made of stamped or" cast metal or be made of wood or other approved material and given shapes other than circular to suit different tastes or requirements. The collapsible frame is shown with two hinged members but it will be obvious that more than two hinged members can be used when the frame is large and the diagonal bars can be arranged to suit this alteration.

In use the tray partly filled with water and the butter or any other article of food placed in thecenter thereof in a dish or. the like m (see dotted lines in Fig. 1) to keep it clear of the water and the. cover which has been "previously thoroughly wetted is then placed thereover with its hot- The water in the tray is drawn up absorbent covering by capillary attraction and aided by the evaporation of the moisthe ture on the sides and top thereof produces a very cool atmosphere around the butter or other article therein.

' The absorbentv covering it can be easily removed and replaced by a fresh one'at a very low cost when it becomes worn or is otherwise rendered ineflicient or useless for effecting; the purpose for which it has been devised.

Should the "covering it become soiled it may be washed from time to time by dipping it into boiling water thereby obviating the removal of the said covering from the frame. i

I claim I 1. In a butter cooler of the character described, a collapsible cover comprising a frame having rigid top and bottom rings, a diagonal bar carried by the top ring, members swingably connected to opposite points on the bottom ring and adapted to fold up and bear against the diagonal bar,

a covering of absorbent material secured to r the top andbottom rings of the frame and portions formed with depressions adapted to engage and bear against the diagonal bar. when the members are swung upwardly so as to maintain the frame in an extended position, flexible connecting members between the rings and a covering of absorbent material secured to the rings and forming f the sides and top of the cover.

In testimony whereof I have aflixed my signature in the presence of two witnesses. GEORGE LAJVRENCE. l Vitnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2476531 *May 5, 1947Jul 19, 1949Joseph BergCollapsible receptacle
US2809382 *Apr 26, 1955Oct 15, 1957Robert B JacksonBaby playpen
US2837860 *Jul 8, 1955Jun 10, 1958Oberlin Canteen CoCollapsible bucket
US3133550 *Sep 12, 1961May 19, 1964Neil BrownCollapsible frame with bent bottom ring
US3169544 *Nov 17, 1960Feb 16, 1965Neil BrownCollapsible frame
US3306311 *Dec 1, 1964Feb 28, 1967Buerger George RFood storage means
US6378581 *Oct 30, 2000Apr 30, 2002Thomas Leonard SheridanHollow cage golf bag cover
US6702119 *Nov 27, 2001Mar 9, 2004Pro-Mart Industries, Inc.Popup wardrobe
US20030168360 *Mar 11, 2002Sep 11, 2003Yu ZhengCollapsible structures
U.S. Classification312/31.2, 220/9.2, 312/31.5, 135/153
International ClassificationA47G19/26, A47G19/00
Cooperative ClassificationA47G19/26
European ClassificationA47G19/26