US1884440A

US1884440A - Molding strip

Info

Publication number: US1884440A
Application number: US401520A
Authority: US
Inventors: Edward J Welch
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-22
Filing date: 1929-10-22
Publication date: 1932-10-25
Anticipated expiration: 1949-10-25

Description

Get. 25, 1932. J w c 1,884,440

MOLDING STRI P Filed Oct. 22. 1929 INVENTOR ATTORNEYS Patented Get. 25, 1932 nnrraoisrarss EDWARD J. wanes, or NEW YORK, N. Y.

MOLDING STRIP Application filed October 22, 1929. Serial No. 401,520.

The invention concerns a molding strip of the type which is made ofdeformable metal such as aluminum.

It initially is of such shape as will permit the application of nails to the base of the strip for securing the same to the automobile body or other surface and the strip is provided with a flange adapted to be displaced from its original position and seated with its free edge engaging the base so as to complete the prescribed finished or design effect, and at the same time cover the nails and present a surface which is unbroken in appearance.

The invention is shown in the accompanying drawing in which Figure 1 is an end View of one of the strips in its initial condition, i. e. before the strip is applied to the surface and before it is changed in form by bending its flange into its final position.

Fig. 2 is a front view of Fig. 1. V

Fig. 3 is a view like Fig. 1 of the strip after its flange has been moved to its final position to provide the finished molding and a cover for the nails.

Fig. 4is a front View of the molding of Fig. 3. i

Figs. 5 and 6 show a modified form of the invention.

.Fig. 7 is a View of a further modification.

The drawing shows a strip of material as aluminum which is formed by extruding through a die. This material being pliant or malleable permits the strip to be changed in form from that shown in Fig. 1 to that shown in Fig. 3.

The strip initially consists of a base or securing portion 1 and a. flange 2 arranged substantially at right angles to each other and integrally connected together by a weakened line of metal. This thin connecting portion of the metal is provided by reducing the thickness of the base portion from the point 3 to the point 4, where the base wall or flange meets the inner face of the other flange 2. This reduction in thickness of the metal is gradual between the points mentioned so that there is provided an inclined flat surface eX- tending downwardly and'outwardly or rearwardly in the illustration from the point or 2d and an inner curved surface at 26.

line 3 to the point or line 4. In other words this flat surface is in convergent relation to the inner face 2a of the flange 2. The base portion 1 of the strip is provided with openings as indicated for driving nails through the strip into the automobile body or other part to which the strip is to be attached. The

outer or back face of this base flange or se- Euring portion of the strip is substantially At the edge thereof opposite that upon which the flange 2 is located, there is a thickened rib or head 5 the faceof which is curved from the extreme edge of this flan cm the point 6 at which there is an abrupt s oulder. The rib formation just described is on the front face of the flange or base 1 and by its curved configuration it contributes to the design effect, which when considered as a whole is that of a base portion having its front face curved or arched from edge to edge with .a central rounded rib or raised portion extending lengthwise of the strip.

Incidentally the construction described presents the shoulder surface at a slight inclination to the front face of the strip 1 as indicated. This shoulder projects from the face of that part of the flange 1 which is of normal or full thickness and the shoulder is so located relative to the width of the flange 2.

that when said flange is turned 0r bent over the base flange the rounded edge of this flange 2 will be received within the line of said inflange-2 as before stated is substantially at right angles, initially, to the base or securing flange 1. It is rounded on its outer side at '1' and this rounded surface merges into the rear or outer face of the flange 1. F urtherit will be observed that this flange 2 has an upturned lip portion 2?) extending substantially at right angles to the main portion of the flange, the edge of the lip being rounded at 20. The lip is curved as viewed in cross Y section presenting an outer curved surface at The outer curved surface merges into the under curved surface 2f of said flange 2, there beq ing on this under surface a depression or groove 2% extending lengthwise of the flange and between the two curved surfaces 2f and 7.

As before stated, the flange 2, initially, is so located that nails may be driven through the base flan e 1 to secure the strip to the car body. A or this is done the flange 2 is turned,

by exerting pressure thereon, over the front p face of the base flange 1, this bending action being readily performed because of the weakened line of metal at point 4, which virtually forms a hinge connection between the two flanges. When turned to its full limit the rounded surface at 20 of the lip 2b of the flange 2 will lie under the shoulder 6, and

because the lip 26 is curved as above described and because of the curved face of rib 5 and the curved face 7, the final form of the molding will present the appearance of a strip having its outer surface curved or arched from edge to edge with a raised head or rib extending along its center line substantially equally spaced from the edges of the main or base portion of the strip, said head also presenting a curved surface from edge to edge thereof. When viewed endwise the strip will present the appearance of a strip having a raised hollow rib or bead centrally of its width, or in other words, the strip will have an arched center, this being due to the curved form of the lip. The free space pro- Vided b this arch within the strip will accommo ate the nail head and should any nail be improperly driven or not driven all the way in, the arched formation will accommodate this irregularity and there will be no deformation appearing on the surface of the strip.

It will be noticed that the strip presents a symmetrical shape. This is due to the fact that the curve of the face of the rib 5 along one edge of the strip harmonizes with the curve 7, which when the flange 2 is closed over the flange or base 1 lies along the opposite edge portion of the strip and the curved lip 26 lies midway between these

curved faces

5 and 7. The groove 2.10 is symmetrically disposed in Fig. 4, i. e. after the flanges are closed one upon the other, in respect to the groove or recess 5a.- lying between the curved lip 2b and the curved face of the rib 5. In other words the strip when in final form presents a central rib or bead like formation with a de ression or groove on each side thereof. l y reason of this central rib conaruction bounded by the grooves 5a: and 2:12, a solid unbroken appearance of the surface will be presented to the eye and even though the rounded edge 20 of the lip 12b of the flange 2 be not in actual contact with the shoulder at 6, this will not be noticeable, as the eye will not detect the slight difference between one roove and the other when viewed from the rout of the strip. If contact of this rounded edge with the shoulder does take place it will be substantially a line contact. By reason of the rounded edge 20 and the flaring shape of the shoulder seating of the lip under the shoulder will be assured even though there be some slight irregularity, because the rounded surface will accommodate itself to the shoulder in a manner not ossible with a square or flat edge portion. The arched formation of the lip also contributes to the proper seating of the edge of the li under the shoulder, as this arch can slight y deform itself when pressed down into place, and accommodate itself to the shoulder, in a manner that would not be possible with a flat or straight flange lying in one plane throughout.

It will be observed that when the strip is closed the inner face of flange 2 will close against the flat inclined face where the base flange is thinned or undercut, i. e. between the

points

3 and 4, thus closing the angular groove a Fig. 1.

The location of this groove a or rather the undercut relation to the two flanges 1 and 2 is important. It will be noticed that the inner face 2a of the flange 2 forms one wall of this angular groove resulting from the thinning or undercutting of the flange 1 between the

points

3 and 4, because this formation brings the oints 4 of the undercut near the back face of t 1e flan e 1 and in the plane of the inner face 20. of t e flange 2. This

undercut face

3, 4 is therefore entirely in the base flange 1 and the thickness of the wall at 7 of the flange 2 is not altered, so that in closing the flange 2 upon flange 1 the line of bend is back of the extreme edge a: of the completed strip. It is customary with me to Duco or enamel the strip before it is folded into its final form and experience has taught that the Duco or enamel is liable to crack along the line of bend. Therefore, if bending took place along a line exposed to view from the front of the molding strip, the cracked paint would be visible to the observer, but with the bending line disposed at the point 4 above the thickness of the flange 2 as viewed in Fig. 1, this being adjacent the back face of the base flange 1, any cracking of the paint which may take place will be hidden from the eye because it will not be on the front face of the completed strip, but on the contrary will be at the back part of the rounded edge.

Instead of having the end of the lip 27) to locate itself within the line of the shoulder 6 or bear on said shoulder, the construction shown in Fig. 5 may be employed. Here the rib 5b is provided with a curved front face like above described, but said rib is formed slightly wider than in the form first described and the edge of the lip 2b rests upon the outer face of said rib or head. The symmetrical appearance is preserved, the rounder face of the rib along one edge harmonizing or being symmetrical with the rounded surface 7 of the front face of the flange It will be seen from the above that because of the beaded or ribbed appearance of the completed strip i. c. with a rounded or arched front face bearing a raised centrally disposed rib or bead any slight crevice between the edge of the lip of the covering flange 2 and the rib 5 whether in the form shown in Figs. 1 to 4 or that shown in Fig. 5 will not be noticeable because the lengthwise corrugated effect of the strip will catch the eye and render the joint unnoticeable.

In Figure 7 a form is shown in which the base has no abrupt shoulder, but presents a front surface on which the edge of the flange 2g rests.

The portion of the base M at 50 which projects beyond the flange 2g is curved to conform substantially to the curve at 7 a of the flange and the base 1a is slightly dished at 1?).

It will be noted that the flange 2g in T, by simply laying on the base, presents the advantage that when the strip is bent on a curve, any tendency of the strip to wrinkle will be taken care of, as the free edge portion can be ironed out, it not being confined by a shoulder. Contact between the flange and body takes place at the extreme edge of the flange, the main portion of said flange being Spaced apart from the body to accommodate the nail head, if this should protrude from the body. The structure is made of one piece but gives in appearance the effect of a base piece on which a bead is mounted centrally.

I claim:

1. A one piece strip of extruded metal for automobiles comprising a base having at one edge a flange initially positioned at an angle thereto to allow fastening devices to be forced through the base, said base being thinned to a point in line with the inner face of said flange to provide a weakened line in the base about which the flange may turn bodily and without deformation, the flange being thicker than the said weakened line and having no bending contact with the base intermediate its free edge and its attached edge, the said attached edge portion reaching outwardly beyond the weakened line to maintain concealment of the same, substantially as described.

2. An extruded metal strip having a base with an intermediate portion of substantial thickness designed to receive spaced apart fastening members extending transversely therethrough, the front face of the base having a. marginal portion extending at an obtuse angle to the face of the intermediate part of the base and towards the rear of the base to provide a relatively thin wall at one edge of the base, substantially in the plane of the rear face of the base and offset from the front face of the intermediate part of the base, and a preformed wing, or flange, forming an integral continuation of the thin edge of the base,

the wing in cross section beingof such length that, when folded down, it will extend across and cover the fastening means aforesaid, the opposed faces of the wing andbase being of such shape that the wing can be folded down unobtructedly and without deformation until its free edge makes contact with the base.

3. An extruded metal strip having abase with an intermediate portion of substantial thickness designed to receive spaced apart fastening members extending transversely therethrough, the front face of the base having a marginal portion extending at an obtuse an le to the face of said intermediate part and towards tl e rear of the base to provide relatively thin wall atone edge of the latter, and a preformed wing, or flange, forming an integral continuation ofthe thin edge of the base, the wing in cross section being of such length that, when folded down, it will extend across and cover the fastening means aforesaid, the inner face of the wing, or flange, having a portion complemental to the obtuse angular surface-of the base and a marginal portion deflected inwardly in respect to the first pOl'lZlOllttlld lying over the intermediate part of the base when the free edge of the wing, or flange, makes contact with the base.

4. A one piece extruded metal strip com prising a base having a rear surface for abutment against a support and a front face having an intermediate portion substantially parallel to the rear surface, a curved marginal portion on one side of the intermediate portion, and an angularly extending portion on the other side of the intermediate portion extending towards the rear surface and providing in connection therewith a thin wall at one edgeof the base, substantially offset toward the rear of the base from the front face of said intermediate portion, the intermediate portion of the base being designed to have spaced apart attaching means pass therethrough,

and a preformed wing extending integrally from the thin edge of the base and having its outer marginal. portion concave-convex in cross section, whereby, when the wing is folded down, the concave surface thereof will arch over the intermediate portion of the base, and the convex surface will provide a bead, said wing between the last named portion and its edge integral with the base having a curved outer surface substantially corresponding to the first named marginal surface of the base, and an inner surface coinplementa-l to the second named marginal surface of the front face of the base, for permitting the wing to be turned down without deformation towards the base until contact is made therewith by the free edge of the wing 5. A one piece metallic strip comprising a base adapted to be attached to and supported by fastening devices extending transversely through the intermediate part thereof, and a wing, or flange, occupying initially a position out of a plane perpendicular to the face of the intermediate part of the base and a final position in said plane for concealing the fastening devices, the base in cross section 'having a relatively thick intermediate portion and at one side thereof a substantially right-angle triangular portion, the hypotenuse of which forms a beveled face on the base and the angle thereof with the rear surface of the base constitutes a thin lengthwise edge of the latter, and the wing, or flange, having a substantially flat inner surface intersecting said beveled face and forming therewith an acute angle in the initial position of the wing, or flange, the latter being adapted without deformation to be swung about the line of intersection of said surface and beveled face as a center to bring the free edge of the wing, or flange, into contact with the base, the inner surface of the wing, or flange, between the first named surface thereof and its free edge'extending inwardly at an angle in respect to said first named surface.

In testimony whereof, I aflix my signature.

EDWARD J. 'WELCH.