US317108A - Paving-block - Google Patents

Description

(No Model.)

H; G. FISH-3.4 PAVING BLOCK.

PatentedMay 5, 1885.

vUNITED STATES PATENT Ormea..

HENRY G. FISKE, OF SAN FRANCISCO, CALIFORNIA.

PAVING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 317,108. dated May 5, 1885.

` Application filed March 6, 1885. (No model.)

To all whom, it may concern: v

Beit known that I, HENRY G.F1sxn, of the city and county of San Francisco, State of California, have invented an Improvement in Paving-Blocks; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention :relates to an improved sidewalk or paving block; and it consists of strips of board or other material laid horizontally side by side to produce the desired length and width, a series of strips laid transversely above these layers being continued until sufficient thickness is produced. Between and around these layers is a filling of asphaltum and coaltar, which binds the whole together, and the exterior of the block so composed may have a permanent surrounding strip, if desired, as will be more fully explained by reference to the accompanying drawings, in which- Figure l is a perspective view of a block with a part broken away, so as to show its construction. Fig. 2 is a longitudinal vertical section. Fig. 3 is a View of the sidewalkblocks.

In a former application for a patent I have shown a paving-block formed with strips of wood secured together transversely, so as to leave openings, which are iilled with asphalt um, or asphaltum and rock or gravel, to form a block. In the present case I form a block principally of wood without any openings or spaces. t

A A are strips of board set on edge, having a width equal to the thickness of the proposed block, and a length which will form the sides and ends of the block. These strips are held in their vertical position by any suitable device, their lower edges resting upon the bed upon which the block is to be built.

In constructing the block I rst pour melted asphaltum and coal-tar, properly mixed and tempered, upon the bed within the side walls A, and then I lay a series of longitudinal strips, B, which are a little shorter than the length between the end walls. These strips are laid side by side close together until the width of the space within the side walls is nearly filled with them, and they are pressed down in the liquid asphaltum, which has already been poured in the temporary mold.

` mented to them by the melted asphaltum which has already been poured in.

, Another series of longitudinal strips B are' then laid in upon the transverse strips C in the same manner that the first series were laid,

more asphaltum having previously been poured in. In this manner the longitudinal and transverse strips are laid alternately one above the other with the intermediate filling of asphaltum, which is poured ,in after each layer of strips has been placed, and the strips then pressed down, so that any surplus liquid will be squeezed out around and between them, and thus bind the whole rmly together. The space between the top of the upper layer and the upper edges of the side strips A may then be filled in with asphaltum, so as to finish the block and provide a good surface for wear when the block is laid.

By coating the strips A upon the inside with any suitable substance which would prevent the adhesion with the liquid asphaltum it will be manifest that the strips A may be removed after the block is complete; but I prefer to make the blocks so that these strips shall adhere by the action of the asphaltum and form a part of the block itself. These blocks are much lighter than any made with a large proportion of stone or gravel and asphaltum, and are much more easily made, being also lighter to handle and lay. l

The upper edges, A', of the side and end strips A may be made separate, as shown in Fig. l, so that after the iilling of asphaltum is complete these strips may be removed, and when the blocks are laid a channel will be left between them which may be lled with melted asphaltum to complete the street-surface. I prefer, however, to form the block within an outer mold, D, the edges of which are higher than the sides of the block, so that the filling IOO of asphaltum will flow outward over the edges of the side strips A, as in Fig. 2, and when laid the asphaltum surface will be continuous.

In making sidewalk -bloeks two series of transverse strips, B C, may be nailed together, their ends being beveled, as shown in Fig. 3. Sufficient asphaltum remains or is brushed upon the surface, and broken rock or gravel is scattered over and embedded in this coating, and it becomes firmly iixed when the coating has set. rThe prepared block being then placed Within the mold, a filling of cement or concrete is put in around it, and becomes firmly bound to it by reason of the beveled ends and sides and the coating of gravel or rook to which it unites itself.

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

1. A paving-block composed of strips of board laid parallel to each other and close together, and other `strips laid across these in the same manner alternately until sufficient thickness is attained, in combination with an intermediate lling and binding of asphaltum, coal-tar, or other equivalent substance, substantially as herein described.

2. A paving-block composed of strips of board laid parallel to each other and close together, and other strips laid across these in the same manner, with an intermediate binding and iilling of asphaltum and ooaltar or other equivalent substance, in combination with surrounding side and end pieces, substantially as herein described.

3. A paving-block composed of alternate transverse strips of Wood laid close together with a .binding and filling of asphaltum, in combination with the exterior surrounding strips having their upper edges made removable, substantially as herein described.

4C. A paving or sidewalk block composed of alternate transverse strips of Wood laid close together, the ends and sides being beveled or inclined, a coating of asphaltum or gravel embedded therein, and an exterior coating of cement or Concrete, substantially as herein described.

l'n Witness whereof l have hereunto set my hand.

HENRY G. FISKE.

/Vitnesses: A

GEO. H. STRONG, S. H. NoURsE.

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