US2215395A

US2215395A - Spring tension parting strip

Info

Publication number: US2215395A
Application number: US305163A
Authority: US
Inventors: Oscar A Hedman
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-11-18
Filing date: 1939-11-18
Publication date: 1940-09-17
Anticipated expiration: 1957-09-17

Description

Sept. 17, 1940- o. A. HEDMAN SPRING TENSION PARTING STRIP Filed Nov. 18, 1959 Patented Sept. 17, 1940 UNITED STATES SPRING TENSION PAR'HNG same I Oscar A. Hedman, San Francisco, Calif.

Application November 18, 1939, Serial No. 305,163

5 Claims.

This invention relates to a spring tension part- ..ing strip, and it is an object of the invention to provide a strip of this kind which is particularly adapted for use in connection with double-hung orhsliding windows.

It is also an object of the invention to provide a strip of this kind so constructed that it will keep windows'tight and permit the sashes to easily slide up and down under all weather con- ;ditions and which also serves to eliminate ratine- Another object of the invention is to provide 'a strip. of this kind comprising an elongated member placed within a packing strip and wherein said strip has outer marginal portions provided with inwardly disposed flanges overlying the outer face of the strip and occupying different planes so that said flanges may have move- .ment across the adjacent face of the elongated member without interfering one with the other, .together withmeans coacting with said flanges without interfering with the desired movements thereon to positively prevent fouling of said flanges.

Still another object ofthe invention is to provide a'spring tension parting strip with all sharp edges covered, to prevent persons operating the window, cleaning, painting, etc., from possible injury, and with sufficient expansion on both sides to absorb the existing spaces in the window frame provided for the purpose of expansion and contraction of the wood due to weather conditions.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved spring tension parting strip whereby certain important advantages are attained and the device rendered ,simpler, less'expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

- The novel features of my invention will hereinafter be definitely claimed.

In order that my invention-may be the better -understood, I will now proceed to describe the same with reference to the accompanying drawing, wherein:

Figure 1 is a transverse sectional view illustrating a parting strip constructed in accordance with anembodiment of my invention in applied position;

.FigureZ is a fragmentary view in perspective of my improved strip, the associated sashes being omitted,

' .As disclosed in the accompanying drawing, 1 denotes a side member of a window frame. nd

which sidemember is provided, as is well known, with theouter bead 2 and an inner bead}.

Centrally of these beads 2 and 3 the outer face of the side member l is provided with the usual parting strip, groove 4.. 4 A

. i .5 As herein disclosed, :my improved parting strip comprises an elongated body member 5 of desired dimensions and preferably of wood. Coextensive in length withthe-member 5 is a packing strip 6 of spring. copper or other suitable metal and which issubstantially U-shaped in cross .seotio-nwith the base portion of the packing .strip snugly receiving a longitudinal marginal portion .of the member .5. Theseportions .of the packing strip Bend the body member .5 [are received withinthe par-ting .stripgroove 4 in the usual way.

The portions of the side walls 1 of the packing strip which .arev disposed outwardly beyond the :along from substantially one end to the other These.,30.

with .the .inwar dly,. .disposed flanges 9. flanges 9, in. addition to giving a neat finish tothe parting; strip ,as a whole also materially I;

strengthen or, reinforce the side walls I of. the packing strip, and in a manner to assure a maximum of efficiency. of said side walls I.

It is toibe notedthat the flanges 9 are not coplanar' but one is slightly offset with respect to the .otherso that said flanges may have .relative movement acrossthe adjacent outer face of the member 5 without said flanges .9 fouling or contacting onewith the other. By this arrangement the flanges 9 may be of a width substantially the same as the width of the adjacent face of the member 5. By having the flanges 9 freely mov-' ing one inwardly of the other without contact or fouling, the outer marginal portions of the side walls l maybe'initiallyispread apart to allow the flanges 9' to have movement across the adjacent outer face of the member 5 from substantially edge to edge of said outer "face of the member 5.,

,The portions oftheside walls of the packing I strip which contact with the stiles 8 of the sashes readily permit said-sashes to be raised-.or lowered without sticking-irrespective of weather conditions and, furthermore, the inherent resiliencyof said outer portions of the side walls I, of the packing strip force the sashes S toward the heads 2 and 3 and thereby eliminate rattling.

Anchored to one side face of the body member 5 and coextensive in length therewith is a metal strip I0 preferably of spring copper and which has its outer longitudinal marginal portion defined by the flange II which extends substantially across the entire width of the face of the member 5 and occupying a position between the flanges 9.

The flange II of the strip I0 is of utmost importance as it provides a positive means to prevent the flanges 9 from interfering'with each other. This is of particular advantage in connection with old windows where a greater expansion is necessary.

As is clearly illustrated in the accompanying drawing, the inner marginal portion of the flange II underlies the free marginal portion of the outer flange 9 and overlies the inner marginal portion of the second flange 9. The outer longitudinal margin of the flange I I is continued by a "marginal portion of the outermost flange 9. The

junction I5 between the flanges II and I2 is formed to provide a rounded edge as is also the returned portion I4. This reverted flange I2 serves to maintain the outermost flange 9 in effective working position while the flange I I ooacts with the inner flange 9 to maintain such flange in its required position with respect to the outermost flange 9 thereby preventing contact or fouling of the flanges 9 one with the other. The reverted flange I2 together with the returned portion I4 also eliminate sharp edges which is to be avoided in a parting strip of the type herein embodied.

' Considering that'metal to be used in the con- 'struction of this parting strip mustbe less than .006 of an inch in thickness, the arrangements of the three flanges gives the parting strip a finished appearance whether open or closed.

.The free longitudinal marginal portions of the flanges 9 are capable of a certain amount of bulge or wave which is not prevented by the reverted flange I2 although hidden thereby. This bulge or wave of the flanges 9 'is caused by the fact that only one-half of the length of the strip is closed by the sash on either side as each sash is substantially one-half the height of the window. When the sash is down, there is nothing against the side wall of the strip at the upper half thereof with the result that said upper half will gradually expand. As a flange 9 cannot bend edgewise it must bulge.

From the foregoing description it is thought to be obvious that a spring tension parting strip constructed in accordance with my invention is particularly well adapted for use by reason of the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1'. A parting strip for a window frame comprising an elongated member, a packing strip of spring metal substantially U-shaped in cross section and in which the member is positioned, the inner portions of the side walls of the strip being closely adjacent to the inner portion of the member, the outer portions of said side walls being inclined outwardly from the member, the outer marginal portions of the side walls, having inwardly directed flanges one positioned outwardly with respect to the other, and a metallic strip secured to a side face of the elongated member and having a flange therealong overlying the outer edge face of the elongated member and positioned between the flanges of the side members of the packing strip.

2. A parting strip for a window frame comprising an elongated member, a packing strip of spring metal substantially U-shaped in cross section and in which the member is positioned, the inner portions of the side walls of the strip being closely adjacent to the inner portion of the member, the outer portions of said side walls being inclined outwardly from the member, the outer marginal portions of the side walls having inwardly directed overlapping flanges one positioned outwardly with respect to the other, and a metallic strip secured to a sideface of the. elongated member and having a flange therealong overlying the outer edge face'o-f the elongated member and positioned between the flanges of the side members of the packing strip, the flange of the side strip extending substantially entirely across the outer face of the elongated member.

3. A parting strip for a window frame comprising an elongated member, a packing strip of spring metal substantially U-shaped in cross section and in which the member is positioned, the

inner portions of the side walls of the strip being closely adjacent to the inner portion of the member, the outer portions of said side walls being inclined outwardly from the member, the outer marginal portions of the side walls having inwardly directed flanges one positioned outwardly with respect to the other, and a metallic strip secured to a side face of the elongated member and having a flange therealong overlying'the outer'edge face of the elongated member and ond strip being provided with a reverted flange overlying the inner free marginal portionof the outermost of the first two named flanges.

4. A parting strip for a window frame comprising an elongated member, a packing strip of spring metal substantially U-shaped in cross section and in which the member is positioned, the inner portions of the side walls of the strip being closely adjacent to the inner portion of the member, the outer portions of said side walls being inclined outwardly from the member, the outer marginal portions of the' side walls having inwardly directed flanges one positioned outwardly with respect to the other, and a metallic strip secured to a side face of the elongated member and having a flange therealong overlying the outer edge face of the elongated member and positioned between the flanges of the side members of the packing strip, the flange of the second strip being provided with a reverted flange overlying the inner free marginal portion of the outermost of the first two named flanges, the outer longitudinal marginal portion of the reverted flange being rounded.

5. A parting strip for a window frame comprising an elongated member, a packing strip of spring metal substantially U-shaped in cross section and in which the member is positioned, the side walls of the packing strip being outwardly expansible by means of spring action, said side walls having inwardly directed flanges, and a stationary metallic strip having a flange positioned between the two first named flanges, overlying the innermost, and a reverted flange overlying the outermost of the two moving flanges, the extreme edge of the reverted flange being inwardly 5 directed, thus covering all sharp edges.

' OSCAR A. HEDMAN.