USRE14349E - Bichard w - Google Patents

Description

R. W. BURNETT.

WOOVD VENEERED METAL. APPLICATION mm APR. 16. 1911.

hteissued Sept. 11, 1917.

UNITED STATES PATENT onnion RICHARD w. 'numr'n'rr, oromcn'so, nimnors.

WOOD-VENEERED METAL.

Specification. Reissued'LetterS latent. Reigsued Sept. 11, 1917.- Original No. 1,178,130, dated April: 4, 1916, Serial No. 48,650, September 2, 1915, Application for reissue filed A ril '16, 1917. Serial 1%. 162,551,

To all whom it may concern:

Be it 'known that I, RICHARD W. Bum NETT, a citizen of the United States, residing, at Chicago, in 'thecounty of Cook and State of Illinois, have invented a certain new and useful Improvement in Wood- Veneered Metal, of which the following is a full, clear, concise, and exact description,-

reference being had to the accompanying drawings, forming a part of thisspemfication,

My invention relates to improvements in '1 wood veneered metal, and more particularly wood veneered sheet steel adapted for use in the building'of interiorsof cars.

For many years, niiinerous attempts have been made 'to devise a successful method of veneering sheet steel with wood "so that the same might be employed in fini'shin the interiors of railway passenger cars, he "allsteel cars or-coaches 'areunsati sfactory in many respects, particularly 'on account "of their heat conductin properties and the fact that it is not "0 y expensive, but diflicult "to artistically finish the steelto imitate 1 wood, and'even if artisticall finished, the

dents or depressions origina' y in the sheet steel "or those subsequently acquired "in service, cannot be concealed and therefore mar the finish. L

The object of my invention is to provide a veneered metal which will serve as a satisfactory su'bstitute for veneered wood and which will b mo'r'e desirable than an allsceel finish. i

So far as I am'aware, prior to my invensheet, usually tion a successful wood veneered sheet metal has never been produced, and the reasons for this appear to reside in the fact that no proper method of forming a bo'nd'or union between the wood veneer and the sheet steel has been discovered.

' v I am aware thatpaper, oilcldth, and fabricswithout hap. or pileand which were necessarily saturated with the binder 'of glue or paste have been employed as-the bonding medium between the steel and veneer, but

none of these mater'ials'has been adapted to successfully compensate for the differences iii the rates of expansion and contraction of the two materials, wood and steel, without breaking or destroying the union between the two outer layers and the intermediate layer of paper, oilcloth or saturated fabric;

specification,

v finished product 'is employed, an

By experiments, I have found that a satisfactory wood veneered sheet steel may be obtained 1) interposi'nga layer or strip of a textile abric the'surfaces of which are provided with a pile 'or napiand cementthe amount of the cementitious substance employed between each surface of the textile fabric and the metal sheet and wood veneer being merely siiflicient to impregnate the free fibers or tentacles of the 'na or pile, thereby leaving the ma in orbody por 'tion of the "textile fabriow'ith its natural elasticity and compressibility. I V

In the drawing forming a part of this Figure 1 is a perspective view of a piece of a finished article embodying my invention; 2 is a s ictidnal 'view of the veneered m'eta1, upon an exaggerated scale in order 'to more clearly illustrate the invention; and Fig. 3' is another "sectional view, also u onan' enlarged scale, showing. '80 1 the results of attempting to sepa ate the wood veneer and 'I n'etal sheet and disclosing more particularly the action of the fibers fabric. I a p i I p In said drawing, ,10 de ote the metal of steel 11 the wood veneer which may be of any suitable kindadapted for the particular purposes 'to which the 12 the textile fabric which is provided on that surface against the steel sheet apile '0r nap as indicated at,13 in Fig-l3. preferor tentacles on the surfaces ofthe interposed able constructlon, the fabric 12 is also .pro-

vided with a pile or na ttn 'that side attached to-the wood veneer, an'l a prachas been found that either single jraised annel? 'or double raised flannel? is best adapted, in carrying out my invent on.

This fabric i's'floos'ely woven and the surface -fibers are free,and the body of the fabric is naturally more or less elastic and is well.

"adapted yield or stretch when there is relative movement between the "wood veneer and steel sheet. By referring to Fi 2, it will be seen that the characteristics 0 the interposed textile" fabric which I employ are" particularly adapted for the application of wood veneer to steel which has been bent or otherwise deformed as indicated at 15.; As there-shown,

Inc

thepile fibers or tentacles of the fabric ex,- tend from the surface of the fabric to the concave surface of the steel and yet form a strong bond between the steel and the fabric.

As clearly illustrated in Fig. 3; it will be seen thatlany tendency of the veneer to separate from the metal sheet is strongly resisted by the multitude of fibers or tentacles which extend between the textile fabric and the wood on one side and the steel on the other.

,appears from Fig. 3, separation of any two of the layers is resisted by a multitude of the fibers extended over a relatively large area, and it is this fact which enables me to produce a thoroughly practicaland serviceable veneered metal sheet.

In manufacturing the veneer, I preferably employ the following steps: The metal sheet is first coated with a thin layer of the glue and flour paste, then the fabric in its natural condition is stretched over the metal sheet whereupon the, free fibers on the surface adjacent the meta-l sheet will receive the glue and paste, then the wood veneer is coated with another thin layer of the glue and flour paste, after which the wood Veneer.

is appliedto the exposed surface of the textile fabric, Finally, pressure is applied to insure the thorough adhesion of the parts, but in no event is the glue and flour paste applied in quantities large enough to permeate or saturate the body of the fabric.

I have found that'a veneered metalsheet made in accordance with the foregoing description proves entirely satisfactory in service, the same liaving been used to a consid- 'erable extent on railway coaches. As so used, the veneered sheet steel possesses nu merous advantages over an all-steel car in that the same does not sweat in hot humid climates, it is a poorer conductor of heat and hence much more to be desired, particularly in sleeping cars, it is fire-resisting, as has been demonstrated by experiment, and the wood veneer will not crack or peel from the sheet metal due to the different rates of expansion and contraction of the wood and metal, or constant vibration and jarring to which all cars are sub ect.

I claim:

1. As an article of nlanufacture, a Wood sheet of metal, a sheet of wood veneer, and

an interposed pliable fabric between the veneer and metal, said fabric being provided with a nap on its surface, the nap being united to the adjacent sheet by a cementitious substance, the body of the fabric remaining unpermeated by said cementitlous substance, whereby the difference in the rate of expansion and contraction of the veneer and metal is compensated for by said fabric without rupturing the bond between either the fabric and the metal or the fabric and the veneer.

3. As an article of manufacture, a wood veneered metal sheet which comprises metal in sheet form, wood veneer in sheet form, and an interposed layer of raised flannel, the pile of the flannel being united to the adjacent materials by a binder substance,

said flannel permitting slight relative movement between the woodand metal without destroying the bond therebetween.

'4. As an article of manufacture, a fire-resisting veneered metal sheet which comprises, a sheet of metal, a sheet of veneer, and an interposed pliable fabric between the veneer and metal, said fabric being provided with a napon its surface, the nap being united to the adjacent sheet by a cementitious substance, the body of the fabric remaining unpcrmeated by said cementitious substance whereby, the difference in the rate of expansion and contraction of the ve neer and metal is compensated for by said fabricwithout rupturing the bond between the fabric and the members adjacent thereto.

In witness that I claim the foregoing I have hereunto subscribed my name this 10th

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