US1570186A

US1570186A - Sealing strip

Info

Publication number: US1570186A
Application number: US446925A
Authority: US
Inventors: John R Replogle
Original assignee: Security Trust Co
Current assignee: Security Trust Co
Priority date: 1921-02-21
Filing date: 1921-02-21
Publication date: 1926-01-19
Anticipated expiration: 1943-01-19

Description

Jan. 19 1926. 1,570,186

J. R. REPLOGLE SEALING STRIP Filed Feb. 21, 1921 avwemto'c 732/1425? 5 aw a %//W% v I g r strips for closures Patented Jan. 19, 1926.

UNITED STATES PATENT. OFFICE.

JOHN R. REPLOGLE, OF DETROIT, MICHIGALL ASSIGNOR TO THE SECURITY TRUS COMPANY, TRUSTEE,-OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

" SEALING STRIP.

Application filed February 21, 1921. Serial: No. 446,925.

others skilled in the art to which the invention relates to make and use the same, reference being made therein to the accompanying drawings, which form a part of -this specification.

This invention relates in general to'sealing strips and more particularly to sealing it is desirable to prevent about said closure.

One of the objects of the invention is the construction of a sealing strip that isefiicient in operation, simple in construction, cheap to manufacture, "easy to install and that is'not likely to get out of order.

Another object of the'invention is a cheap and simple method of; making the sealing stri O fher and further objects and advantages of the invention will appear as the description proceeds.

On the drawings,' Figure 1 is a horizontal section of a compartment wall and closure, parts broken away, showing the sealing strip in position therebetween the passage of air Figure 2 is an enlarged perspective VIEW of a portion of the sealing strip;

Figure 3 is an enlarged horizontal section of a portion of a compartment wall and closure therefor showing the sealing strip in position therebetween; and

Figure 4 is a longitudinal sect on of a modified form of the backing-strlp, parts broken away.

The numeral 10'designates a door con acting member, wall or door. frameof a receptacle, such for instance as a refrigerator. This frame has a main contacting portion 11 and a stepped extension 12. Thefree edge main portion and stepped of' the door 13 1S .rabbetted, or in other words, it is provided with a maincontactmg portion 14 extension of the door are "opposite and adjacent to the correever, for compartments where and a stepped extension 15. The i sponding main portion and stepped extension of the wall, when the door is closed.

One or more bands of sealing strips are secured between the door and its frame in such a manner that when the door is closed portions of the sealing strip material will be compressed between the door and the frame at each side of the retaining means.

As shown, an inner band and an outer band of sealing strips 16 are arranged between the contacting fac'es of the door and door frame. It is immaterial whether these bands of, sealing strips are secured to the door or the door frame. As shown, howthey' are secured to the door. They may besecured inosition by any suitable retaining means. s shownin Figs. 1 and 3 the door is provided about its edge with an inner groove or kerf 17 and an outer groove or kerf\18, in 'which the sealing strips 16 are secured.

. The sealing strips consist each of a sheet of rubber bent back upon itself to form a fold 19. The two

edges

20 and 21 of the fold are held by a backing 0r attachin member 22 of metal or other suitable materlal. I This 24 and 25 form two recesses 26 and 27 in v which the

free edges

20 and 21 of the rubber strip are placed: The

edges

24 and 25 are then pressed down at intervals to retain the edges of the rubber strip in position. In

order to more firmly secure the edges of the rubber strip in position the metal at the depressed portions may be indented as shown at 30 and 31 on Fig. 3.

The portions 32 of the

side edges

24 and 25 that are not depressed form retaining somewhat and are adapted to en a e the sides of the

grooves

17 and 18 .to old the an M with a rebarbs or catches 32 that extend laterally strip in position without the use of other fastening means.

In applying the strip it is only necessary to provide grooves or kerfs in the contacting face ofthe door or door frame and force the backing strip either transversely or long tudinhlly into these grooves or kerfs The barbs or projections 32 will retain the strip in position. ,By arranging the back ing strip in the groove at right angles to the door, the rubber fold will extend beyond the surface of the door in such a manner that when the same is closed it will be formed into folds 33 and 34 at the two sides of the groove (see Fig. 3).. In other words, by securing the edges of the fold 19' on the door adjacent to each other and at substantially right angles to the face of the door a fold at each side of those edges is formed when the door is closed. These folds being compressed between the door and its abutment seal the joint at each side of the groove. This is an important feature of this invention because it prevents air passing through the jointby passing through or around the attaching means.

By arranging an inner and an outer band of sealing strips there is formed a dead air space 35 between the bands which constitutes an air space insulation which tends to prevent an interchange of heat between the interior and exterior of the compartment.

A slightly modifiedform of the backing strip and its indentations is shown in Fig. 4. In this form of the device the indentations or perforations 30 and 31 are arranged slightly offset from each other. The indenting tools are forced through the

outer edges

24 and 25 of the backing strip 22, into or through the edges of the rubber strip 19 and form

indentations

36 and 37 in the fold 23 of the backing strip. The inner edges of the indentations or perforations 30 and 31 interlock with the

indentations

36 and 37 in the fold 23 and serve to retain the edges of the rubber sealing strip 19 in position therebetween.

It will be understood that various changes in the form, construction, composition and arrangement of the several parts may be resorted to without departing from the spirit or scope of my invention, hence I do not wish to limit myself strictly to the structure herein set forth, but

"What I claim is 1. A sealing strip for refrigerators, consisting of a sheet metal backing strip bent to form a plurality of longitudinally extending recesses opening in the same direction, and a fold of sealing material having each of its longitudinal edges in one of said recesses and secured therein by spaced compressed portions in said backing strip, said backing strip having outwardly projecting portions between said compressed portions constituting means for retaining it in a groove. substantially as shown and described.

2. A sealing strip for refrigerators or the like comprising a sheet metal backing strip bent to form a plurality of longitudinally extending recesses opening in the same direction, and a fold of sealing material having each of its longitudinal edges in one of said recesses and securedtherein by spaced indentations in said backing strip, said backing strip having outwardly projecting portions between said indentations adapted to engage the sides of a groove and retain the strip therein.

3. A method of forming sealing strips which consists in longitudinally folding a strip of sheet metal'so as to form a plurality of recesses opening in the same direction, forming a strip of sealing material into a longitudinally extending fold, placing the edge portions of said fold Within said recesses, forming compressed portions in the outer edges of said folded sheet metal at intervals along the same and then indenting the compressed portions into the sealing material to secure the same.

In testimony whereof I afiix my signature.

' JOHN REPLOGLE.