USRE7293E - Improvement in tessellated floors - Google Patents

Description

' various imperfections or objectionable features asphalt, the two parts being rmly united by ling marquetry-iloors'are considerably lessened.

the lioorng-block; Fig.2, a cross-section. Fig. 3 shows a modification of the means `ot` con-` necting the face and-backing.

I which considerably increases. the cost of -the iiooring, I simply glue the sides of the pieces -at one operation. `The'requisite quantity of N UNITED STATES PATENT.JOFFICF.

SAMUEL P. GROOGOGK, 01T NEW YORK, N.Y.

lllnrnovlswuaiv'rl IN TEssELLATEn FLooRs.

Specification forming part of Letters Patent No. 178,141, dated May 30, 1876; reissue No. 7,293, dated September 5, 1876; application led August 22, 1876.

DIVISION' A. Y l

Tp alhohom it may concern:

Be it known thatI, SAMUEL 1?. GR'QDCOCK, of the\city, county, and,State of New York, have invented a new and useful Improvement in Tessellated Floors; and I do hereby declare that the following is a full, clear, and exact description of the same. L o

In order to give tessellated ilooring'the desired firmness, solidity, and permanency, andV at the same time avoid the use of thick blocks or pieces', which would greatly increase its cost, it has been the practice to connect the edges of the pieces by tongue and groove, and to lay them upon a foundation composed of numerous strips or timbers, or, more commonly, ot" a plastic cementitious material. The

of this and similar 'modes of laying marquetryiloors have led to the development of my presf ent invention, which consists in forming composite iiooringblooks or sections of a number of wooden pieces of the desired or requisite sizes, shapes, and colors, and a backing of a dovetail or equivalent connection, as hereinafter described. A flooring-block so made up may be handled, transported, and laid in much the same manner as ltilesl are, .so that the labor, time, and expense ordinarily incidentto lay- In the accompanying drawing, forming part of this specification, Figure lis a plaujview of Aindicates the flooring block vor section composed of pieces of various sizes, forms, and colors. 1n constructing the same I lirst cut out the several pieces b, in the ordinary manner, but in place of providing themwith the'ordinary tongue and groove ontthefedge,

b together, and then, by aid of suitable machinery, I cut one or more dovetail grooves across the entire composite block or section A asphalt, heated sufficiently toimpart a good de l greeof plasticity, is then poured over the back of .block A, and allowed to cool, when it will` closely adhere andV assume the hardness and rigidity necessary to `forni a rm backing or support for the pieces b` and bind `them together in one solid block. In such case the asphalt enters the dovetail grooves cut in the ooringY-block A, thus forming tongues a. In .l ,some instances, I cut a plain or squareangled `groovejn place of a dovetail. As a moditcation of this mode'of connection, Ifinay insert double-dovetil wooden strips c in the several grooves of the section A, in which case that portion of the strip projecting from the back' will be lirmly embedded inthe asphalt. An-

other mode of connection is to dispense with ,l

grooving the back of the block A, and attach a woodendovetail strip, d, to the same by I means of screws, the strip being in theasphalt, as in the other case.

tions material.

among which are great solidity, firmness, an

durability, capacity to resist attacks of wood- `borers and rodents, to prevent unhealthy ex-` halations from the earth permeating the apart-` mentl from below; also, very slight capacity to absorb moisture, whence results absence of" swelling, warping, or shrinking lHaving thus described Iclaim'is- The composite block or section A, for marmy invention, what qnetry-iiooring, formed of pieces- 11, arranged in a suitable design or pattern, and the asphalt vbacking B, the same being connected as shown and described.

SAML; P. GROOOOCK. Witnesses: f a y S. B. Goon'ALE, E. D. GRANT.-

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