US3046616A - Door trim - Google Patents

Description

July 31, 1962 F. H. SAMPSELL DOOR TRIM 2 Sheets-Sheet 1 Filed June 6, 1960 JINVENTEIR FREDERICK H. SAMPSELL JEIEL- SAMPSELL DOOR TRIM Filed June 6, 1960 2 Sheets-Sheet 2 INVENTEI FR EDERIEK H. SAMPSELL 3,046,616 DOOR TRIM Frederick H. Sampseli, 1107 E. 54th St., Indianapolis 20, Ind. Filed June 6, 1%9, Ser. No. 34,011 6 Claims. (U. 2ll-11) This invention relates to a trim for an opening in a Wall such as for doors and windows. The trim may be made out of metal preferably, or it may be made out of plastic. The structure which embodies the invention adapts itself to a snap. on application before or after the walls may be painted or decorated.

It is a primary object of the invention to provide a trim which may be fabricated in pre-cut lengths and which may be pre-finished before it is applied to the wall'about the opening.

A further primary object of the invention is to provide a trim which will have two different legs, one of which will fit within a kerf cut in the edge of a Window or door jamb, and the other leg will rest upon the finished wall, and an intervening width of the trim will be required to buckle during the application of the trim to the Wall in such manner that there is an elastic urge embodied in the trim itself for maintaining the one leg against the wall in firm contact therewith While the other leg will tend to be urged against the corner of the kerf which is visible after the trim is applied.

These and many other objects and advantages of the invention will become apparent to those versed in the art in the following description of one particular form, in

Y which:

FIG. 1 is a door opening about which the trim of the invention is applied;

FIG. 2 is a view in transverse section on the line 2-2 in FIG. 1;

FIG. 3 is a View in perspective from the back side of a short length of the trim;

FIG. 4 is a. detail in cross-section through a wall and an adjacent jamb with a section of the trim presented to the wall in disassociated relation; and

FIGS is a view of the trim being applied.

' Referring to FIGS. 1 and 2, a typical structure is illustrated wherein at the side of an opening generally designated by the numeral 10, there are two pairs of studs 11, 12 and 13, 14, these studs in the two pairs being nailed one against the other. Then across the edges of these studs is a section of either plaster or dry wall 15, terminating at the face 16 of the stud 12. Then a door jamb 17 is set along the face 16, normally in spaced relation therefrom, to have an edge 18 in substantially the same plane as is the face of the wallboard 15. It is the purpose of this invention to supply a trim which will be positioned over the edge portion of the wallboard face, across the gap between the stud 12 and the jamb 17, to be retained by normal elasticity of the material of the trim.

In forming the trim out of metal, metal strips are formed into channels having a planar web 19' from the side portions of which extend a short leg 20 and a longer leg 2'1 throughout the length of the strip.

The jamb 17 has a kerf or slot 22 cut therein from the face 18 to a depth of at least one-half inch.

A length of the trim generally designated by the nu meral 23 is cut to be long enough to extend throughout the entire length of the jam 17, and also to give a length for a miter joint. Length 23 is brought up to have the leg 21 enter the slot 22 and the free edge of the leg 20 rest against the dry wall 15, the width of the slot is substantially one-sixteenth of an inch and the thickness of the trim throughout is .0195 inche. In other words the width of the slot 22 exceeds the thickness of the leg 21.

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The leg 21 has its terminal edge portion 24 in a plane substantially six degrees to the web 19. The leg 20 is inclined to and over the web 19 at an angle of nine degrees. The free edge portion of the leg 20 is brought against the wallboard 15, FIG. 5, and then from the dash line position the trim is pressed to have the leg 24 enter the slot 22., and under sufficient pressure, the leg 24 is caused to bear elastically by its free edge against the side 25 of the slot 22 and by an outer face portion of the portion 21 against the corner 26 of the slot. This corner 26 is the corner extending longitudinally along the slot opposite the upper relatively inner corner 26a.

Forcing the leg portion 21 into the slot 22 tends to rock the leg in the slot, in turn tending to increase the radius of curvature at the junction of the leg with the web 19, this curvature being at the bend 27.

Due to the Width of the web 19, the web itself tends to bend toward the wallboard 15 causing the web to take a concave shape in turn forcing the leg 20 under the yielding pressure set up by the bending of the web 19, against the wallboard 15. In other words, the initially planar web 19 assumes a cupped or concave surface throughout its length which causes the trim 23 to be frictionally retained by the leg portion 21 in the slot 22, this the radius 27 to merge into the Web 19. The leg portion 24 will be forced into the slot 22 until the line 29 coincides substantially With the line of the corner 26.

Normally the transverse trim length 23a will be installed first in the same manner as indicated above, and then the vertically disposed trim lengths 23 will have a mitered end portion 31 lapping over the ends of the transverse lengths 23a to give a finish which will not open at the joints.

By reason of the cross-sectional shape of the trim lengths 23, under variations in temperatures, and in swelling and drying of wood jarnbs, the trim 23 will maintain a tight and constant line of contact between the edge of the leg 20 and the wallboard 15, and there will be a sealed contact between the leg portion 21 and the edge or corner 26 of the jamb, the contraction and expansion of the metal trim being accommodated through the Web portion 19 in the concave contour. There is always a bending tension present in this web portion 19, and there is no sliding action of the contactiing portion of the'trim 23 over and along the dry wall 15. This means that the dry wall 15 may have its surface prefinished and likewise the edge 18 of the jamb may be prefinished and the prefinished trim applied afterwards. This means a great saving in labor since the painter does not have to paint or finish the dry Wall 15 and the jamb 13 to straight lines where the painted finish is liable to be carried up onto.

an adjoining member. The trim 23 will normally be prefinished as above indicated so that it does not need painting or finishing in any respect. The trim will extend outwardly from the dry wall .15 to give a simulation of a Wood trim which is desirable in many parts or" the country.

In order to achieve the tensioning of the trim member 23 to secure the inherent gripping action of the legs in the kerf 22 and on the wallboard 15, certain definite relations in respect to dimensions must be maintained. The overall width of the trim piece 23 may vary somewhat, but the angularity, and length of the legs must be kept within rather close limits of the respective dimensions thereof.

These dimensions are set out in FIG. 4. The overall width of the trim 23 is two inches. The leg 20 is connected therewith through a radius of .120 inch and the leg itself extends from the web 19 at an angle of nine degrees from the perpendicular thereto. The overall length of the leg 20 from the inside surface of the web 19 to the extreme free edge of the leg is five-eighths of one inch. The leg 21 extends from the web 19 through a radius of .120 inch and outwardly from the underside surface of the web 19 an angle of ten degrees from the vertical. Measured to the line 29, the dimension is nine thirty-seconds of one inch, and from that line, continuing on the normal line, the dimension is fifteen thirty-seconds to the free edge of the leg 21. The overall length then of the leg 21 from the underside of the web 19 is threefourths of one inch. The'leg portion 24 extends from the line 29 back under the web 19 an angle of six degrees. The leg portion 24 is inserted into the kerf 22 a depth to have the line 29 coincide with the corner edge 26 as a gauge for the insertion.

As above indicated, by use of these two planar widths 30 and 2.4, the leg 21 tends to be straightened carrying the width 30 to the left, as viewed in FIG. 5, tending to increase the radius 27, but by reason of the leg 20 pressing by its lower end 20a against the dry wall 15, the strip 23 will in effect rock on that edge tending to bring the leg 20 almost to a vertical plane in respect to the surface of the dry wall 15, so that the web 19 curves downwardly between the two legs tending to maintain the curvature radii at each end to give the concave surface which provides the force through the elasticity of the strip 23 to retain the strip in position. The material of the strip 23 has a thickness as above indicated of .0195 inch and is made out of cold rolled steel carrying the trade name of Electro Galvanized.

Therefore while the invention has been described in the one particular form, it is obvious that some variations may be employed, particularly in the dimensioning of the angles and widths of the two legs as above indicated, the variations being within the range of a few thousandths of one inch. Therefore I do not desire to be limited to that precise form beyond the limitations which may be imposed by the following claims.

I claim:

l. The combination of a wall surface terminating by an edge at the margin of a wall opening, and a jamb in the opening along said edge and having an edge approximately in the plane of said wall surface, and said jamb edge having a slot entering its said edge extending longitudinally thereof with the side walls of the slot being parallel and at right angles to said jamb edge; with a flexible trim strip having a pair of legs and a web initially interconnecting said legs in the nature of a channel iron; one of said legs extending through an angle to and under said web to a free edge and the other of said legs being longer than said one leg extending from the web first outwardly from thereunder and, from a longitudinal line, thence inwardly; said other leg being forced into said slot tending to set up a bending stress between the web and said other leg; said one leg bearing by its free edge against said wall surface spacing said web therefrom; and said web being concavely shaped between the legs under said bending Sll'BSS.

2. The structure of claim 1 in which said other leg has two approximately planar widths, one on each side of said line; said line constituting a slot insertion limit gauge.

3. The structure of claim 1 in which said one leg is approximately at right angles to said wall surface upon said insertion into the slot of said other leg.

4. The structure of claim 1 in which said web is initially approximately planar, said one leg is planar and extends under said web at an angle of substantially nine degrees and has a length of substantially five-eighths of an inch; and said other leg extends outwardly from under the web for substantially nine thirty-seconds of an inch, in a plane at an angle to said web of substantially degrees, to a longitudinal line, and then from said line in a plane to a free edge for a distance of substantially fifteen thirty-seconds of an inch and at an angle of six degrees to said web and toward said one leg.

5. The structure of claim 4, in which said slot is substantially one-sixteenth of an inch wide, and is deeper than fifteen thirty-seconds of an inch.

6. A wall opening trim comprising in combination with a jamb set in said opening, and a wall surface extending from an edge of the jamb, the edge being in substantially the plane of said surface; said jamb edge having an entering slot extending longitudinally thereof and the walls of the slot being approximately perpendicular to said edge; of a flexible, elastic trim strip approximately channel-shaped with a central web and a pair of legs extending one each from longitudinal marginal portions of the web; one of said legs being planar; the other of said legs being longer than said one leg and lying in two planar portions, one portion extending from said web to terminate at a longitudinally extending line, and the other plane portion extending from said line angularly from the first plane portion back under said web; said other planar portion being entered within said slot to said line with said one leg bearing by its free edge against said wall surface; said other leg two planar portions being flexed along said line to come into a. common plane and tend to carry said web into a concave shape between the two legs; said first leg extending initially under said web by a predetermined angle; said one planar portion of the other leg extending by approximately the same said angle outwardly from the web to be approximately parallel to said one leg; and said other planar portion extending from said line by an angle less than said first angle.

References Cited in the file of this patent UNITED STATES PATENTS 2,639,472 Jonsson May 26, 1953 2,725,607 Mummert Dec. 6, 1955 2,806,261 Sampsell Sept. 17, 1957 2,942,703 Nelsson June 28, 1960

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