US1545856A - Cloth board and similar article - Google Patents

Description

July 14, 1925. 1,545,856

H. B. SMITH CLOTH BDARD AND SIMILAR ARTICLE Filed Oct, 18, 1923 Patented July 14, 1925.

UNITED STATES P A TE OFF'llC E HARRY B RIDGMAN SMITH, BROOKLYN, YORK, AS3IGNOR T0 IZIGHTSHIP, CLOTH BOARD CORPORATION, OFBR-OOKLYN, NEW YORK, A CORPORATION OFNEW" YORK.

CLOTH BOARD AND SIMILAR ARTIGBE.

Application filed October 18, 1923. Serial No. 669,387.

T 0 all whom it may concern:

and State of New York, have invented certain new and useful Improvements in Cloth Boards and Similar Articles, of which the following is a. specification.

My invention. relates to clothboards and similar articles, usually employed as a center upon which a bolt of fabric is wound, or for similar purposes.

These cloth boards are used in immense numbers andit is a principal object of the present invention to greatly reduce the cost of such articles: so that in the aggregate an immense saving is effected Another object is to provide a cloth board of light weight, which is at the same time very stiff and strong although usually moderately resilient or flexible.

A further object is to provide a cloth board embodying some orall of the advantages above mentioned and which has a satisQ factorily smooth surface or finish or more particularly stated, one in which the broad sides are smoothly surfaced and the longitudinal edges or corners are smoothly surfaced and rounded so that there isi'no possibility of injury,feven to delicate fabrics which may be wound upon the board.

A very important object of theinvention is to provide a cloth board of such material and structure that it can be produced by what I call a continuous process, in which the different materials are advanced in continuous web form, brought together tov form an immense saving as compared with hand labor, which has been required in the past, largely or entirely, for the production of cloth boards of this class.

By study, experiments and practical tests I have discovered that the foregoing and other objects and advantages may be at tainted by constructing the cloth board of fibrous sheet material, preferably a. material of the class generally designated as cardboard,.consisting of a core vor filler formed of one or more layers or: sheets of fibrous sheet materlal, such as cardboard of substantial thickness and stiffness, these being,

adhesively secured together'when more than one-layer is used, the filler being usually of rectangular outline, of substantial length and. Width, and the thickness usually being much less than the. width of the filler structure,.the filler being enclosed; in a cover or envelope of suitable fibrous. sheet material, usually pulp-board or cardboardofsubstan tial thickness and strength, although in,

many cases thinner than. the core material,

this cover sheet being much wider than the filler strip or strips, and folded and adhesively secured about tlie'filleig-sotha-t the one velope covers the broad sides and the longi tudinal edges and corners ofthe filler and.

presents: a perfectly smooth external surface, the edges or corners being usually more or less rounded to avoid sharp edges. When thefiller consists of more than one ply of material, the respective plies or layers are firmly secured together by adhesive which usually extends throughout the contacting surfaces, and the cover is also secured to the filler by adhesive over substantially the entire. contacting surfaces ofrespeotive materials. In this way the comto torsional and bending strains, both longitudinally and transversely of the board.

'The cover material, which is, in certain preferred case-s, substantially as thickas the filler and may be of similar or identical material, and which therefore has very substantial thickness, stiffness and tensile strength, not only provides a smooth outer may be wound upon it,,b ut it very materially strengthens and reinforces the filler against all distortion or strains above. referred to, and this result is produced not only by the thickness and stiffness of the cover material, but by its tensile strength, which becomes effective because of the tight adhesive connection of the cover sheet to the filler. Substantially any sort of fabric, including delicate and expensive fabrics, may

covering for the completed board, which prevents injury to any kind of fabricswhich sufiiciently indicated by stippling.

be wound upon cloth boards so constructed without possibility of injury, and the boards are at the same time sufficiently strong to resist breakage or undue bending in shlpment or transverse bending or breaking caused by the strain of winding the fabric, or shrinkage of the fabric after it is wound upon the board.

The accompanying drawing shows one representative structure embodying the in-.

vention and also sufliciently explains one" way in which it can be economically produced. After considering this embodiment,

persons skilled in the art will understand that many variations may be made, and I contemplate the employment of any structures that are properly within the scope of the appended claims.

Figure 1 is a perspective view of a cloth board embodying the invention in one form,

different layers of the material being broken away for explanatory purposes.

Figure 2 suflioiently illustrates the production of such cloth boards by a continuous assembly method.

Figure 3 shows a complete cloth board produced by'severing a piece from the con tinuous assembly of Figure 2. i

In Figure l" a filler or corestructure is generally designated by reference letter F.

This filler may consist of one or more sheets or layers of fibrous material such as cardboard, strawboard or the like, of suitable 'strengthand stiffness; In the present example there are three'filler sheets 1, 2 and 3, the different sheets or layers being preferably firmly secured together by adhe slive he complete core structure is enclosed in an envelope or cover C, which is preferably, although not necessarily, one integral sheet of fibrous sheet material. This may be almost any suitable fibrous sheet material of the class roughly designated as paper, but more specifically is, in preferred cases, of the same material or similar to the material which composes the filler, namely, strawboard or. pulp-board of very substantial thickness, stiffness, and tensile strength, and in many cases the cover material is as thick or approximately as thick as the filler sheets; although, in some casesthe cover material maybe somewhat thinner, and also,

if desired, it may be in some cases of a higher grade material, so-long as it has suflistrains. is substantially amplified by its tensile and round contour, or at least the longitudinal corners 6 are so pressed or otherwlse treated as to remove sharp edges and produce a generally round or smooth formation of these corners and the longitudinal edges 5. This edge formation enables the fabric to be wound smoothly and evenly on the cloth board without any sharp deflection of thefabric at the edges or corners of the board. The broad sides of the structure are smoothly and evenly surfaced by the envelope material and the finish of the external surface may be made as high or smooth and as decorative as may be desired by providing cover material of a suitable grade or material, which is smoothly surfaced or calendared, or else one surface of the cover sheet which is to be the external surface of the completed board may be covered with. a sheet of highly finished a er.

WVhen the filler consists'of more than one layer of material the respective layers or plies are firmly secured together by adhesive, which preferably covers substantially the entire contacting surfaces, and similarly the cover sheet is secured to the filler by adhesive which covers substantially the entire contacting surfaces, so that the entire structure is firmly'boundtogether, strengthened and reinforced by the. adhesive; and the cover material, of substantial thickness, stiffness and tensile strength, greatly reinforces and strengthens the filler against torsional, transverse and longitudinal bending This function of the cover sheet strength, which becomes effective for the stated purpose by reason of the firm and '1 complete adhesive attachment of the cover to the filler, by reason of which practically all strains are distributedthrough the entire structure. 1

Other variations within the scope of the invention will be readily understood by skilled persons without detail explanation, and such variations are comprehended in the scope of the-following claims.

Figure 2 sufiiciently illustrates one approved method of producing cloth boards of this kind, this being what I call a continuous assembly method, in accordance with which the sheet or strip 1 of core material is advanced in continuous form, for instance, from a roll and the other sheets or strips 2 and 2 are similarly advanced and adhesive is applied as sufliciently indicated by stippling, to secure the core strips firmly together producing a continuous core assembly A. The sheet or web C of envelope material is also advanced in continuous form as from aroll. This sheet, as clearly shown in Figure 2, is much wider than the core strips. Adhesive may be a plied to a surfaceof the cover web as suiii ciently indicated by stippling 7 or else the adhesive connection of the cover web may be provided for by adhesive on upper and lower surfaces respectively of the upperand lower filler strips. At a suitable point the cover web is folded over and" adhesively secured to the broad upper and lower surfaces of thefiller with the edges 4 of the envelope properly located, in this case being brought into abutting relation as explained in connection with Figure 1. There is thus pro duced, a continuous assembly B consisting of the core structure and the envelope applied as above described. At a suitable point in the formation of the assembly the edges 5 or corners 6 are pressed or otherwise treated to provide the rounded edge formations, sufficiently explained in connection with Figure 1. Individual cloth boards as shown in Figure 1 and also in Figure 3 are then produced by severing the continuous assembly transversely at suitable intervals. The assembly method described does not form a part of the present invention, but is disclosed and claimed in a companion application. The present cloth boards may be produced by other methods, but a preferred, economical method of production is here described to enable the structure of the board to be more fully understood and also to emphasize the low cost of the completed article, which is due not only to the low cost of the materials and the simplicity of the structure, but to the fact that it is capable of beingproduced by economical methods, such as the rapid and inexpensive continuous production methods referred to.

lVhat I claim is:

1. A cloth board or similar article adapted for production by a continuous process in which the materials are advanced in continuous web form, brought together to form a continuous assembly, and severed transversely to produce the individual boards, said cloth board comprising a filler composed of fibrous pulp board of substantial thickness and stiffness, and an enveloping cover consisting of fibre board similar to the filler material and of substantial thickness, stiffness and tensile strength, the cover being adhesively secured to the filler substantially throughout the contacting surfaces and covering the broad surfaces and longitudinal edges of the filler, the entire surface of the board being smooth and free from sharp longitudinal corners and irregularities, and the cover substantially reinforcing and stiffening the filler against torsional, transverse and longitudinal bending strains, as Well as providing a smooth board surface which will not damage fabrics wound thereon.

2. A cloth board or similar article adapted for production by a continuous process in which the materials are advanced in con-' tinuous web form, brought together to form a continuous assembly, and severed transversely to produce the individual boards, said cloth board comprising a filler composed of a plurality of sheets-of pulp boaud of substantial thickness and stiffness, adhesively secured together substantially throughout their contacting surfaces, and an enveloping cover consisting of fibre board similar to the filler material and of substantial thickness, stiffness and tensile strength, the cover being adhesively secured to the filler substantially throughout the contacting surfaces and covering the broad surfaces and longitudinal edges of the filler, the entire surface of the board being smooth and free from sharp longitudinal corners and irregularities, and the cover substantially reinforcing and stiffening the filler against torsional, transverse and longitudinal bending strains, as well as providing a smooth board surface which will not damage fabrics wound thereon.

3. A cloth board or similar article adapted for production by a continuous process in which the materials are advanced in continuous web form, brought together to form a continuous assembly, and severed transversely to produce the individual boards, said cloth board comprising a filler composed of pulp board of substantial thick ness, stiffness and tensile strength, the cover being adhesively secured to the filler substantially throughout the contacting surfaces and covering the broad surfaces and longitudinal edges of the filler, the entire surface of the board being smooth and free from sharp longitudinal corners and irregularities, and the cover substantially reinforcing and stiffening the filler against torsional, transverse and longitudinal bending strains, as well as providing a smooth board surface Which will not damage fabrics Wound thereon, the longitudinal edges and corners of the envelope being rounded and smoothly finished to avoid injury to fabrics.

4. A cloth board or similar article adapted for production by a continuous process in which the materials are advanced in consubstantial thickness, stiffness and tensile strength, the covering being adhesively secured to the filler substantially throughoutthe contacting surfaces and covering the broad surfaces and longitudinal edges of and stiffness,

the filler, the entire surface of the board being smooth and free from sharp longitudinal corners and irregularities, and the cover substantially reinforcing and stiffening the filler against torsional, transverse and longitudinal bending strains, as well as providing a smooth board surface which Will not damage fabrics wound thereon, the 1011- gitudinal edges and corners of the envelope. being rounded and smoothly finished to 0 avoid injury to fabrics.

Signed, at Brooklyn, in the county of Kings and State of New York, this 5th day of oat. A. D. 192a HARRY BRIDGMAN SMITH.

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