US481353A - Artificial-stone paving-block - Google Patents

Description

(No Model.)

P. HAINBS.

ARTIPIGIAL STONE PAVING BLOGK. No. 481,353. Patented Aug. 23, 1892.

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PATENT EEICE.

YONKERS, NEWT YORK.

ARTIFICIAL-STONE PAVING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 481,353, dated August 23, 1892.

Application filed August 3, 1891.

To all whom it may concern:

Beit known that I, FRANKLIN HAINEs, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Arti cial-Stone Block-Pavements, of which the following is a specification.

This invention relates to certain improvements in artificial stone-blocks for pavements, in which a binder of a peculiar construction is employed, by means of which the pavement is enabled to withstand a more considerable pressure or strain than has before been possible and by means of which blocks of smaller or larger size can be readily constructed; and the invention consists of an artificial-stone paving-block formed of cement or other suitable material and provided with a binder composed of interlocking metallic binder bars or plates, said plates being set on edge'in the block and made to interlock at or near their center and at right angles or other suitable angle, according to the shape and size of the block.

In the accompanying drawings, Figure l represents a perspective View of two interlocking binder bars or plates shown in the act of interlocking with each other. Fig. 2 is a plan of a block, showing the binder-bars embedded therein. Fig. 3 is a perspective view of still another form of binder. Fig. et is a vertical transverse section of a block or portion of pavement, showing the arrangement of the binder in the same; and Fig. 5 represents detail side views of the individual binder bars or plates, of which the modified form shown in Fig. 5 is composed.

Similar letters of reference indicate corresponding parts.

My improved artificial-stone blocks or pavements are constructed on a foundation, the lower layer or stratum of which is composed of broken stones, rubble stone, or buildingstone set upright on edge, on which a layer of broken stones of smaller size is placed, which layer is preferably covered by a layer of clean cinders. Vhen the foundation heretofore described has been thoroughly wetted and rolled or rammed, the pavement proper is constructed, which is formed of two layers or courses, a base course Ct, made of concrete,

Serial No. 401,560. (No model.)

and a top or wearing course b,of cement and other materials. A binder d of peculiar construct-ion is partly embedded in the lower or base course by being set on edge into the same, after which the top course of the block is applied. The binder is constructed either of intersecting binder bars or plates d d', as shown in Fig. l, which bars are recessed at or near their center, as at d2, Fig. 1, so as to interlock with each other, and which are preferably perforated, so that the cement or composition of which the pavement is composed can pass through the perforations and produce the rigid uniting of the bars or plates with the upper andlower courses. For square blocks thebinder-plates are arranged at right angles to each other and extended either diagonally toward the corners of the block, as shown in Fig. 2, or crosswise, as desired. Instead of recessing the interlocking edges of the binder-plates, one binder-plate may be provided with a slot cl3 of sufficient length at its center, while the other has recesses d4 at both sides of its center, so that when the recessed plate d is passed through the slot of the plate CZ until the recesses arrive in line with the slot the recessed plate is turned on its axis, so as to be placed on edge, in which position it interlocks with the slottedbinder-plate, as shown clearly in Fig. 3. In forming the paving blocks or slabs of which the pavement is composed the binder-plates are embedded into the lower or concrete course before the same has set and is still in a plastic state, the binderplates being set on edge into the same. The entire binder may be pressed down into the lower course of concrete, or one of the binderplates may be first pressed into the same and then the other, care being taken that they interlock properly at their points of intersection. The upper layer or wearing-course is then cast, poured, or worked around the binder, so that the latter is firmly united with the layers of the block when the setting or solidification of the two courses is accomplished. The binding-bars become then an integral part of the block and form a bond of great strength between the same. The binder imparts great resisting-power against crushing and tensile pressure and adds to the wearing capacity of the blocks, while it serves, also,

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as means for iirmly uniting the two courses of the block, so as to increase the strength and resisting-power ot the same.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. An articiaLstone paving-block having embedded therein two intersecting iiat metallic binder bars or plates set on edge, both of said plates beingprovidcd at or near their centers with interlocking slots, substantially as described.

2. An artificial-stone paving-block having embedded therein two perforated intersecting fiat metallic binding bars or plates set on edge, both of said plates being provided at or near their centers with interlocking slots.

3. An artificial-stone paving-block formed of two layers or courses, having embedded therein metallic binder bars or plates set on edge and provided with interlocking slots at or near the center of said bars and with open ings along the middle thereof, the material forming the pavement uniting at said openings and flowing therethrough.

4. An artificial-stone paving-block having embedded therein interlocking metallic binding bars or plates set on edge, one of said bars being provided with a longitudinal closed central slot and the other with lateral open slots, whereby the interlocking of the bars is effected.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

FRANKLIN HAINES.

Witnesses: Y l

PAUL GOEPEL, A. M. BAKER.

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