US1345391A

US1345391A - Insulation for refrigerator-cars and the like

Info

Publication number: US1345391A
Application number: US137962A
Authority: US
Inventors: John F O'connor
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-12-20
Filing date: 1916-12-20
Publication date: 1920-07-06
Anticipated expiration: 1937-07-06

Description

UNITED STATES. PATENT. err-ice;

JOHN F. oeom'von, or CHICAGO, iL rNoIs, ASSIG-NOR T 0 WILLIAM H. M nna, or

GI-IAZY, NEW Your.

INSIJ'LATION FOR REFRIGERATOR-GARS AND" Specification of Letters Patent.

Application filed December 20, 1916. Serial No. 137,962.

To all whom it may concern:

Be it known that I, JOHN F. OCONNOR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Insulations for Befrigerator-Cars and the like, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in insulation for refrigerator cars and the like. 7

The object of the invention is to provide an eilicient insulation for refrigerator car doors and other similar uses and which is composed of a minimum number of parts; which may be easily applied; and which produces a wide surface bearing between the adjacent members to be sealed as contradistinguished from a line of contact.

In the drawing forming a part of this specification, Figure 1 is a horizontal sectional view of portions of a refrigerator car and doors, showing the improved insulation applied thereto, the doors being in closed position. Fig. 2 is an enlarged sectional view of one'of the members provided with the insulation and showing the latterin normal or uncompressed condition. Fig. 3 is a view similar to Fig. 2, but illustrating the position of the parts under compression. And Fig. 4 is an elevational view of one of the members provided with the insulation, part of the fabric being cut away to illustrate interior construction.

Insaid drawing, 10 denotes a wall of a refrigerator car having the door opening therein, the latter being closed by the two hinged doors 11 and 12, the former being closed first and the latter closed last on account of the arrangement of meeting beveled edges, as indicated at 13. r

The improved insulation is applied between the meeting edges of the doors and also between each door post and corresponding door. Inasmuch as the insulation is the same for all places, it will only be necessary to describe it for one. Referring now more particularly to Figs. 2, 3 and 4, 14 designates a groove or channel extending longitudinally of the member to which the insulation is applied, said groove being relatively shallow and having a plain, flat bottom. Bridging said groove is a layer of quilting or felt 15 which is tacked to the wood as by the tacks or nails 16. Outside of the quilting or felt is a layer of canvas or duck 17 which is held by said nails 16 and also by outer additional series of nails 18. The layers of fabric material are yieldingly supported by my improved packing strip which, as shown, comprises a strip of sheet metal loosely placed in the groove 14: and having the edges thereof provided with reversely extending curls 19 and 20. The plate is made of spring material so as to provide a yieldable support for the fabric and in cross section, the supporting strip may be said to be of substantially S shape. It will be noted from an examination of Figs. 2 and 3, that the fabric is supported along two parallel spaced lines as indicated at 21'21 and the supporting strip also engages the bottom of the groove along two parallel spaced lines, as indicated at 22-22. In this way, a strong but yielding support is supplied for the fabric along two spaced parallel lines which will insure keeping that portion of the fabric between the two lines of contact 21-21 stretched taut and prevent formation of pockets in the fabric which might permit transmission of air through the insulation. The normal condition of the spring strip is as shown in Fig. 2, that is, with portions of the strip extended out beyond the face of the member in which the groove is provided. When the doors are forced to closed position, it is apparent that the fabric will be pressed down and the spring strip compressed, thus resulting in the curled edges of the spring strip being decreased in diameter, as indicated in Fig. 3.

I claim:

An insulation for refrigerators and the like. which comprises, in combination, a member having a groove with a plain bottom extending longitudinally along one edge thereof, a layer of flexible material bridging said groove, and a spring plate loosely mounted within said spring plate being of substantially S-shape in cross section with each edge curled, said curled edges being normally of such diametar as to each have longitudinally extending Patented July 6, 1920.

groove, said I line bearing againstthe bottom of the groove andagainst the flexible material to force the latter along two lines outwardl beyond the edge of sald member, said our ed edges being compressible and thereby maintaining said line bearing contacts between the flexible material and the spring plate and between the spring plate and the bottom of the groove.

In Witness that I claim the foregoing I 10 have hereunto subscribedmy name thisi16th day of.Dec., 1916.

JOI-IJN'VF. OCONNOR.