US1791267A - Terrazzo strip - Google Patents

Description

H. L. FINK TERRAZZO STRIP Feb. 3, 1931,.

Filed June 24, 1929 Patented Feb. 3, l1931 HARRY LJFINK, F NEW Yonx, N. Y.

TERRAZZO STRIP Application led .Tune 24,

i The invention relates to metal strips used to separate sections or areas of different colors or compositions, of walls or fioors of plastic material, usually concretel mixtures;

or to produce surface patterns in such floors, these structures being usually called terrazzo or terrazzo mosaic. The strips are therefore conveniently identified as terrazzo stripsf The general object is to provide an improved strip having a wide upper surface, which produces wide metal zones or stripes separating the tile or mosaic areas, and defining the surface pattern lThese strips as heretofore made are usually of sheet metal of moderate thickness, whose upper edges provide only narrow surface lines or stripes. A more particular object is to provide the desired wide' top surface as a part of an originally separate top or head strip, of

substantial cross-section, permanently securedl to the main or body strip of sheet metal, by rivets, and preferably by hollow, or tubular rivets. Thus a substantial economy of material is effected, and the upper portion of the complete strip has ample strength and rigidity. The tubular rivets also provide for a cross-bonding by the plastic material passing therethrough.

The top or head strip preferably has a dependent portion or vface overlapping and welded to an upper marginal face of the body strip, and a horizontal flange or shoulder abutting the upper edge of the body strip.

The characteristics and advantages of the invention are further sufficiently explained in connection with the following detail description of the accompanying drawing,

' which shows one representative embodiment. 4 After considering this example, skilled personsl will understand that many variations may be made without departing from the principles disclosed, and I contemplate the employment of any structures that are prop- 5 erly within the scope of the appended claims.

In the drawing: L Fig. 1 is a Acombined sectional and perspective vie'w of a terrazzo strip, embodying th invention in one form.

Fig. 2 is a section at 2--2, Fig. 1.

1929. serial No. 373,162.

Fig. 3 is a section at 3 3, Fig. 1.

The main or body strip 1 is of sheet metall (usually brass) of moderate thickness, as usual. It may have any suitable formations to form a bond with the concrete material, such as the integral bowed strips 2, produced v. by punching or pressing operations.l Thel upper edges 3 of'these strips may in some cases define the upper surface 4 of the lower or base layer 5 of plastic composition; in which the lower part of the body stripl 1 is embedded, the upper or finishing layer 6 of -one or a variety of compositions or colors being then poured betweenv the partitions provided by the upper portions of the strips.

The upper portion of the complete strip consists of an originally separate strip or bar 7 of substantial cross-section (this being also -usually brass). The sectional form of this bar may vary. As shown, it is of nearly oblong cross-section, having one side cut away below the top to form an inset face 8 fitting against the upper margin of strip 1, and a shoulder 9 ovenlying the upper edge of strip 1.

The to'p bar has a flat upper facer 15 of substantial width, greater than that of the base strip, to provide a relatively wide visible metallic strip or band on the wall orV floor surface, when the complete strip is set in the` plastic structure in the usual way.

The top bar 7 is connected to the strip by rivets, and preferably by tubular rivets, 16,' passing through registering holes bored in the strip and in the depending flange'por-l 8* tion of the top bar at suitably spaced intervals, the rivet ends bein-g upset or flanged over as at 17 tovpermanently connect the two members together and provideample strength and rigidity. The tubular rivets also provide for cross-bonding by the plastic material flowing through them when the upper layer of the terrazzo is laid.

It will be noted that the longitudinal edges of the body strip 1 are straight and unin- 95 terrupted. Consequently if desired, the strlps 1 may be used as complete terrazzo strips, in cases where only narrow exposed surface lines in the finished floor are wanted., But where wider surface lines are desired, the 10 same stock strips l may be employed with the addition of the [L-shaped bars 7.

li claim:

l. A terrazzo 4strip comprising a base strip of sheet metal. of moderate thickness and a top -bar of relatively thick cross-section having a top surface of substantial Width, and a dependingportion lying against the upper margin of the strip, the bar and strip being secured together by hollow rivets passlng through the strip and' said depending portion of the bar.

2. A terrazzo strip comprising a base strip of sheet metal of moderate thickness and a top bar of relatively thick cross-section having a top surface of substantial Width, and a depending portion lying against the upper margin of the strip, the bar and strip being secured together by tubular rivets passmg through the strip and said depending portion of the bar.

3. A terrazzo strip comprising a base strip of sheet metal of moderate thickness and a top bar of relatively thick cross-section having a top surface of substantial Width, anda depending portion lying against the upper margin of the strip, the bar and strip being secured together by tubular rivets passing through the strip and said depending portion of the bar, the ends of the rivets being anged over to engage the strip and bar faces.

4. A terrazzo strip comprisinga base strip of sheet metal of moderate thickness having straight uninterrupted longitudinal edges and pressed-out portions between the edges for anchoring the base strip in cement or the like, and a top bar of relatively thick l..- shaped substantial Width and a depending portion lying against the upper margin of the strip, the bar -and strip being secured together by tubular rivets passing through the strip and said depending portion of the bar, the ends of the rivets being flanged over to engage the strip and bar faces.

lin testimony whereof li ax my signature.

. AHARRY L. HENK.

meras? cross-section having a top surface of

Images