Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS1712085 A
Publication typeGrant
Publication dateMay 7, 1929
Filing dateMay 8, 1926
Priority dateMay 8, 1926
Publication numberUS 1712085 A, US 1712085A, US-A-1712085, US1712085 A, US1712085A
InventorsJr Thomas J Litle
Original AssigneeCopeland Products Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Refrigerating apparatus
US 1712085 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Mai 7, 1929- T. J. LITLE, JR 1,712,085

REFR IGERATING APPARATUS Filed May 8. 1926 2, Sheet-Sheet l 7 INVENTOR. (5 +5 WMA/#5f ,J/ 715 J?. /0 BY AM ATTORNEY.

May 7, 1929 T. J. LITLE, JR v 1,712,085

REFR IGERATING APPARATUS Filed May 8, 1926 2 Sheets-Sheet 2 I ,YI/EN TOR.


Patented May 7, 1929.



nEFnIGnnArm-e' nrrann'rus.

Application led Kay 8,

My invention relates to improvements in refrigerating apparatus, and more articularly to the heat absorbing unit of t e compresser type of' refrigerating machinev which is generically termed the expansion chamber.

It is the primary object of my invention to provide a heat absorbing unit of a simple and cheap construction.

With these and other objects in View, my invention consists in the'arrangement, combination and construction of the various parts of my improved device as described in the specification, claimed in my claims and-shown in the accompanying drawings, in which:

Fig. 1 is a plan view of the metalsheet which forms the base of my device.

Fig. 2 is a cross section taken on line 2-2 of Fig. 1. l

Fig. 3 is a plan view showing the second metal sheet imposed over the surface of the metal sheet which forms the base of my device, and also showing the line of Weld by which the two sheets are attached.

Fig. 4 is a cross section taken on line 4--4 of Fig. 3. y

Fig. 5 is a plan View showing the second sheet imposed over the base sheet and also showing the location of spot welds by which the two sheets are, at various points within their edges, secured together.'v

Fig. 6 is a cross section taken on line 6-6 of Fig. 5. f A

Fig. 7 is a plan view showing the means by which pressure is applied to expand the unattached inner surfaces of the sheets forming my device.

, Fig. 8 is a cross section taken on line 8-8 of Fig. 7.

Fig. 9 is a vertical cross section of a refrigerator cabinet showing lmy device installed.

In Fig. 1 I have shown a square sheet of metal 1, with circular openings 2 and 3 stamped therein adjacent the edges of two sides of the sheet, said openings 2 and 3 being formed with circular lips 4 and 5 extending outwardly and at right-angles to the surface of the sheet 1 ass own in Fig. 2 and said lips 4 and 5 being internally threaded to receive pipes or other threaded fittings.

Metal sheet 6 is then imposed upon that side of sheet 1 which does not carry the extended lips 4 and 5. The edges of said 5 and secured therein by fitting 11, thereby,v

closing opening 3 as shown in Figs. 7 and 8. Air, or other like pressure is then applied. through pipe 10 to expand and bend away from each other between the spot welds, the

unattached inner surfaces' vof sheets 1 and- 6, thereby producin a suilicient space between the inner surlfyaces of sheets 1 and 6 to permit the circulation of liquid or gas refrigerant between the surfaces of the sheets 1 and 6, and to cause such circulation to be along a devious path. The device formed, as descrlbed, by sheets 1 and 6 may then be bent as indicated in Fig. 9, (it beingsunderstood, however, that the bending may occur prior to welding and expanding), so that the lips 4 and 5 may be connected with pipes 12 and 13extended from .the heat dissipatin mechanism of a refri lerating machine not shown) through the cabinet 14. The sheets 1 and 6 thus bent and connected with the pipes 13 and 14 as shown in Fig. 9,

form a basket-like, or substantially U-shaped container in which may be placed ice trays 15 and 16.. This basket-like. container so formed and described may. be supported in the cabinet 14 by a perforated metal or wire mesh partition 17, which is attached to the inner side walls of cabinet 14 as shown in Fig. 9.

It is evident that the above described heat absorbing mechanism may be much more cheaply and easily constructed than the expansion coils, expansion chambers and brine tanks now in chmmon use, and that it has the additional advantage of providing a container in which may be placed the various articles usually desired to be frozen. 'The device when in operation has a much quicker freezing action upon articles placed within it, than the expansion coils, expansion chambers and brine tanks now commonly used, because it provides for the articles to be frozen, a greater are-a ofcontact with the heat absorbing surface than is provided by the other constructions mentioned, and reduces to a minimum the number of conductors through which the heat must before heilig absorbed.

It is obvious that various changes may be made in the arrangement, combination and construction of my improved device Without departing from the spirit of my invention, and it is my intention to cover by my claims pass such changes as may be reasonably included' within the scope thereof.

What I claim is:

1. In a mechanical refrigerating system, a refrigerant expander unit including two sheet metal plates joined at their peripheral edges and bent to form a container of substantially U-shape, the bottom of said container adapted to serve as a shelf for trays, the sides of said container extending ulpwardly from the bottom thereof and t e free ends of said sides being bent inwardly towards each other, an inlet for one of said bent ends, and an outlet for the other of said bent ends.

2. An expansion chamber for a refriger- THOMAS J. LITNLE, J R..

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2537746 *Aug 22, 1946Jan 9, 1951Prosperity Co IncMethod of forming pressing elements for ironing machines
US2582358 *Jun 8, 1948Jan 15, 1952Northrop Aircraft IncMethod of producing stiffened skin panel
US2690002 *Nov 18, 1949Sep 28, 1954Olin Ind IncMethod of making hollow sheet metal fabrications having a plurality of interconnected passageways
US2772180 *Jun 28, 1952Nov 27, 1956Olin MathiesonParting compositions in metal manufacturing
US2830800 *Apr 16, 1956Apr 15, 1958Reynolds Metals CoPressure welded passageway panels with large chambers
US2923353 *Jan 28, 1958Feb 2, 1960Diamond National CorpMetal sandwich mold
US2944328 *Jul 16, 1954Jul 12, 1960Olin MathiesonMethod of making heat exchanger
US2958934 *Aug 5, 1952Nov 8, 1960Gen Motors CorpMethod of making refrigerating apparatus
US2999305 *Dec 27, 1955Sep 12, 1961Reynolds Metals CoSpiral heat exchanger
US4304350 *Jan 7, 1980Dec 8, 1981Grumman Aerospace CorporationMethod of pressurization system for superplastic forming and diffusion bonding
US4823559 *Apr 18, 1988Apr 25, 1989Hagen William FIce making apparatus
US4829782 *Aug 29, 1988May 16, 1989Paul Mueller CompanyIce harvesting/water chiller machine
US5230870 *May 26, 1992Jul 27, 1993Johnson Arthur FMethod for converting noxious pollutants from flue gas into merchantable by-products
US5344617 *Jul 26, 1993Sep 6, 1994Johnson Arthur FApparatus for converting noxious pollutants from flue gas into merchantable by-products
US5384106 *Apr 4, 1994Jan 24, 1995Energy Conservation Partnership Ltd.Method for removing pollutants from a gas stream using a fractional condensing heat exchanger
US5401480 *Apr 4, 1994Mar 28, 1995Energy Conservation Partnership Ltd.Removal of sulfur and nitrogen oxides from flue gases
DE1002275B *May 21, 1953Feb 14, 1957Gen Motors CorpVerfahren zur Herstellung von Waermeaustauschern
EP0330288A1 *Feb 23, 1989Aug 30, 1989Gerardus Hendricus Maria NijenhuisCooling device or heat pump
U.S. Classification62/523, 29/890.35, 165/168, 72/61, 165/170
International ClassificationF25B39/02
Cooperative ClassificationF25B39/024
European ClassificationF25B39/02B2