US1922472A - Flooring - Google Patents

Description

15, 1933- H. B. CHAMBERLAIN 1,922,472

FLOORING Filed March 5, 1932 i hlu Jfanb B. abambezzain;

. 1,922,472 PATENT OFFICE FLOORING Harold B. Chamberlain, New York, N. Y., as-

signor to Tuco Products Corporation, New York, N. Y., a Corporation of New York Application March 5, 1932. Serial No. 597,065

8 Claims.

My invention relates to new and useful improvements in fioorings, and more particularly to a flooring in which there are a plurality of ex-- pansion joint strips that are, in turn, securely held to a sub flooring.

One of the objects of the invention is to provide a flooring that is especially adaptable for railway and subway cars.

As is well known, many railway cars and subway cars are provided with a concrete or other hard composition flooring to thus withstand the tread of feet, but due to the weaving of the car and the'stresses and strains and jolts to which the car is subjected, the flooring is apt to break or crack.

One of the present objects, therefore, is to provide a floor formed of concrete or other hard composition. In fact, the present floors are formed of a composition known in the trade as Tucolith, although any other similar cementitious floor might be used.

Still another object of the invention is to provide a floor which is especially adapted for cars wherein sub-fiooring is used, made up of a number of steel truss plates, across which are placed expansion joint floor strips, so that the car floor surface is, in reality, divided into ten or twelve blocks. Thus, if a rupture happens to occur in the flooring, it will not extend beyond the first expansion strip that it meets. Again, the strips divide the floor into a number of blocks to relieve the composition floor of the strain, due to the weaving of the car.

Still another object of the invention is to provide a steel sub-flooring made up of a plurality of sheets in which there are located supporting clips and on which, in turn, are secured cross strips. Then, covering the sub-fiooring and em bedding the cross strips is the composition flooring, the cross strips, in reality, dividing the flooring into a number of blocks to thus relievethe floor from the strains due to the weaving of the car or the strains due to expansion and contraction of the composition flooring.

With these and other objects in view, the invention consists in certain new and novel arrangements and combination of parts, as will be hereinafter more fully described and pointed out in the claims.

Referring now to the drawing,

Fig. 1 is a fragmentary sectional perspective of a floor for a car, one of the cross strips being shown embedded in the composition flooring while another cross strip is shown about to be embedded within the composition flooring;

Fig. 2 is a longitudinal view of one of the cross strips, one part of the strip being shown before coating and also showing how the strip rests on the supporting clip, the other half of the strip being shown with the rubber composition thereon, and the marginal edge being scraped;

Fig. 3 is a top plan view of a portion of the cross strip before the same is coated;

Fig. 4 is a sectional View taken on the line 44 of Fig. 3;

Fig. 5 is a similar sectional view but showing the coating as applied to the cross strip.

' Referring now more particularly to the several views, and for the moment to Fig. 1, there is shown a sub-flooring 1 made up of a plurality of hollow steel truss plates 2, which provide channels 3 at their adjoining edges where they are riveted, as at 4. These two plates are provided with a plurality of depressions 3, which abut when I the plates are placed in their inverted positions and may be riveted together, as at 4', the abutments thus forming a plurality of supporting points between the two plates.

Where the plates are riveted together, there are placed rows of U- haped clamps 5 and as the plates are practically two and one-half feet between centers, that will space the rows of clamps about five foot intervals throughout the length of the floor.

The number of these U-shaped clamps set along the joints will depend, of course, upon the width of the flooring and as many may be used as desired to support the cross strips now about to be explained.

Referring for the moment to Figs. 2 to 5 inclusive, there is shown preferably a brass strip 6 that is provided with the alternate fins 7 and 8 throughout its length, which fins are simply pressed out on opposite sides of the strip, as may be readily understood.

As before mentioned, the number of strips will depend upon the length of the car, but in an ordinary car there will be thirteen to fourteen of these transversely extending expansion joint floor strips.

an inch, as may be seen in Figs. 1, 2 and 5, the 5.; purpose of which will shortly be explained.

Referring for the moment to the right-hand side of Fig. 1, there is shown a fragmentary portion of the strip 6 and resting on the supporting U-shaped clamp 5, the fin 7 bridging the clip and forming a bearing surface for the said strip 6. After the strip is placed in position, a preliminary application of the composition flooring will be poured into the channel to a plane just above the fin 7 of the strip and will be allowed to set so that the strip will be tightly embedded in its position on the U-clips. In the same manner, the other strips may be embedded throughout the length of the car.

After the composition has hardened sufficiently, it will be seen that the strips, including the fins, are rigidly held in place and the mainapplication of the flooring composition is poured.

It will be remembered that, as stated, the elastic composition is scraped from the upper edges of the strips, and the purpose of this is to preclude the possibility of the composition smearing the Tucolith flooring composition during the trowelling process.

I have found that even though the coating on the cross strip or expansion joint floor strip is scraped for approximately one-eighth of an inch from its top, the trowelling process squeezes the adjacent coating somewhat, so that this coating is pressed upwardly slightly to make up for a part of the one-eighthinch, where it has been scraped off.

Thus, there is no danger of the elastic composition spoiling the eifects of the Tucolith flooring which may have a pattern or may be of various colors, as desired.

The flooring is then allowed to set and I have found that by providing this sub-flooring and the expansion joint floor strips formed and coated as shown, the possibility of the fioor cracking, due to the weaving of the car, is greatly lessened, and should a crack appear after long service, the same will extend only through the block in which it started.

It will be understood that although I have shown a special form of steel sub-floor in the drawing, many of the other well-known subfloors might be utilised, wherein there are channel or arch formations and, in some instances, the cross strips might be set bodily on the channel formations, thus dispensing with the use of spring brackets. I

In all instances, however, and regardless of how the cross strip is mounted or the specific shape of the same, the cross strip is to be coated with an elastic material that extends nearly to the marginal upper edge of the cross stripso that the plastic flooring, when setting, may squeeze the plastic coating upwardly of thecross strip, the elastic coating taking care of any expansion or contraction of the plastic floor.

It will be further understood that although I have stated that the structure is one that is preferably used on car floors, it will be appreciated that a surfacing of this kind may be used in all kinds of floors which are to be made up of. a cementitious composition, such as concrete floors, sidewalks, roads, and other surfacing of a similar nature.

Again, it will be understood that these cross strips might be set at every joint of the truss plates or the cross strips may be set further apart, the purpose being simply to divide the floor into a desired number of blocks.

Having thus described my invention, what, I claim as new and desire to secure by Letters Patent is:

1. A floor comprising a sub-floor formed of hollow steel truss plates having channelforma tions between said plates, supporting clips secured to the truss plates in certain of said channels, expansion strips mounted on said clips, said channels containing a plastic composition and said plastic composition also extending over said floor and the floor substantially divided into blocks by said expansion strips.

2. A floor including a sub-floor formed of hollow steel truss plates secured to each other, channel formations between said plates, metal supporting means secured to said plates in certain of said channels, expansion strips mounted on said supporting means, a oementitious composition filling said channels and embedding said expansion strips, said cementitious composition also coveringsaid sub-floor, the expansion strips allowing for the expansion and contraction of the cementitious composition.

3. A fioor including a sub-door formed of steel truss plates secured to each other and provided with transversely extending channels between said plates, rows of supporting clips in certain of said channels, expansion strips having portions bent outwardly from the vertical to rest on said clips, and an elastic composition on said strips, a plastic composition filling said channels and covering said sub floor and properly embedding the cross strips.

4. A monolithic fioor for railway cars including a sub-floor formed of hollow steel truss plates, channel formations between said truss plates, rows of supporting means secured to said plates in certain of the said channels, said cross strips having oppositely extending fins mounted on said supporting means, a monolithic composition filling said channels and covering said sub floor, and the upper edges of the cross strips in a plane with the surface of the monolithic floor.

5. A sub-floor plates having channel formations between said plates, expansion strip supporting means secured in certain of said channels, metal expansion strips having an elastic composition thereon resting on said supporting means, the upper marginal edges of said strips, however, being free of said composition.

6. A flooring for railway cars and the like comprising a steel sub-floor of truss and channel formation, cross strips extending along certain of said channel formations, a cementitious flooring filling said channels to embed said cross strips and covering said sub-floor, and said cross strips having an elastic coating thereon and the coating extending within a slight distance of the upper marginal edge of said cross strips.

.7. A flooring for railway cars and the like comprising a sub-floor made up of steel plates, said sub-floor having channel-like formations formed therein, cross strips set in said channel formations, said cross strips provided with an elastic coating extending to a plane near their upper marginal edges, a plastic flooring on said subfloor andembedding said strips, and the plastic flooring extending flush with the upper edgesof said cross strips. 1

8. A flooring for railway cars and the like comprising a metal sub-floor, the sub-floor having a plurality of arch-like formations formed therein, a metal cross strips located between said archlike formations and extending upwardly in a plane above said arch-like formations, a plastic flooring covering said sub-floor and embedding said cross strips, said cross strips provided with a coating of elastic material, and the said cross strips having their upper edges lying in a plane substantially flush with the said plastic flooring.

HAROLD B. CHAMBERLAIN.

including hollow steel truss 1

Images