US1887195A - Means for surfacing sand and the like - Google Patents

Description

NOV. 8, N DE; JQY

MEANS FOR SURFACING SAND AND THE LIKE Filed March 28 1950 Mali 06mg Patented Nov. 8, 1932 UNITED STATES PATENT. OFFICE NICK DE JOY,;OF CANTON, OHIO; HENRY A; SCHRANTZ, ADMINISTRATOR OF SAID NICK DE JOY, nnciiAsnn; AssIGNon TO THE METROPOLITAN PAVING BRIcK COMPANY, or CANTON, 0310, A conronA'noNor OHIO I MEANS roa SURFACING sANn AND THE LIKE Application filed March 28, 1930. Serial No. 439,812.

My invention relates to improvements in surfacers for sand and the like and particularly to surfacers for sand cushions used in the building of brick paved roads.

It is a usual practice in the building of v brick paved roads to'firstlay a foundation 1o sand is spread as evenly or bed of concrete with vertically projecting curbs extending longitudinally at the edges of the bed. Next a relatively thin cushion of as possible over the bed, and then the bric s are laid on top of this cushion. o

The surfaces now in use for surfacing such sand cushions usually each comprise a transverse surfacing bar having guide rollers rolling on the top of the concrete curbs or on forms extending longitudinally of the road at its edges.

The difliculty experienced in using such a surfacer is that the top surface of the curb or form does not run true with the surface of the concrete bed upon which the sand cushion is spread. Consequently, when such a surfacer is drawn over the sand, relatively great variations in the thickness of the cush' ion result due to discrepancies in ,the top surface of the curb or form.

A serious disadvantage results when the bricks are laid upon the sand cushion, for.

the reason that certain of the bricks do not have a proper thickness of sand between their lower surfaces and the concrete bed, and are therefore not able to properly withstand the shocks and strains received by them incident to heavy trafiic passing over the road.

Difliculty is further experienced with these surfacers in surfacing the sand at streetor road intersections, as a special form must be built to serve as a guide across the intersection, or the surfacing must be done by hand at that point.

The principal object of this invention is to provide a sand surfacer which will utilize the surface of the concrete bed itself as a guide forthe surfacing bar,-thereby obviating the variations in thickness of the sand cushion due to variations between the surface of the bed andthat of the curbs or forms, and therebyeliminating the difliculty longitudinally extending members,a surfac ing bar supported by'said members and ex tending. laterally therebetween, roller carriages on which the longitudinal.v members are pivotally mounted, and rollers on which the carriages are journaled, the rollers having sharpened or bevelled outer peripheries for penetrating the sand cushion or covering Eng rolling upon the surfaceof the concrete A preferred embodiment of the improvements is illustrated in the accompanying drawing forming part hereof, in which.

Figure 1 is a top plan view of one embodiment, of the improved surfacer hereof;

Fig. 2 is a cross section of a road bed with a sand cushion or covering showing the surfacer in operative position;

Fig. 3 is a sectional view of the road bed'as on line 33, of Fig. 3, showing an end elevation of the surfacer; and

.Fig. 4 is a fragmentary sectional view-as on line 44, Fig. 3.

Similar numerals refer to similar parts throughout-the several views. 7

The improved surfacer is indicated generally at 9 and includes laterally spaced longitudinally extending channel supporting members 10 which are detachably connected at their central portions,in a manner hereinafter to be described, to a bar 11 extending laterally between them, the bar being positioned so that its longer cross sectional dimension is substantially vertical.

The bottom surface .12 of the bar 11 is longitudinally curved to the desired contour of the sand cushion, and is preferably bevelled. An-angle plate 13 is secured about the lower edge of the surface 12 and extends throughout the length of the bar. The apex of the angle plate 13 provides a sharp and durable edge for engagement with the sand cushion 14 supported by the concrete foundation 15, and laterally restricted by the curbs 16. A U-shaped wearing plate 17 is secured to each end portion of the bar 11, as shown in Figs. 3 and 4, in such a manneras to protect the sides and top surface thereof.

Means for varying the elevation of the bar 11 are provided by angle plates 18, each including a leg 19 secured to a web of one of the channel members 10 at a point longitudinally spaced from the center of the channel member, and each angle plate 18 further includes an inturn-ed downwardly depending leg-20, andthe legs 20- of the angle plates 18 secured on each channel member are spaced apart a sufficient distance to receive with a sliding fit one end of the bar 11 having a wearing plate 17 thereon.

The bar 11 may be det-achably secured at each end between the angle plates 18 and vertically adjustable therewith by means of a bolt 21 passing through each end of the bar and through vertical slots 22 formed in the legs 20, and a nut 23 is screwed on the end of each bolt for engagement with a leg 20.

The bar 11 is further secured to the members 10 by means of threaded bolts 24 passing vertically downward through the webs of the members 10 and through the top of the wearing plates 17 into threaded engagement with nuts 25 fixedly imbedded in the top portion of each end of the bar 11 beneath the plates 17. Lock nuts 26 and 27 are provided on each bolt 24 below and above the web of each member 10 for locking the bolt therewith in any desired position.

It will be seen that the bar 11 may be adjusted vertically with respect to the members 10 by loosening the nuts 23 from engagement with the angle plates 18 and by loosening the nuts 26 and 27 from engagement with the members 10, when the bolts 24 may be turned to raise or lower the bar with respect to the members 10, the bolts 21 sliding in the slots 22.

The bar may then be locked in a desired position by tightening the nuts 23 and the lock nuts 26 and 27.

A U-shaped supporting bracket 28 is secured to the web of each member 10 at each end thereof, and each bracket 28 includes vertically depending spaced flanges 29. A channel member 30 extends longitudinally of the supporting member 10 and is pivotally mounted intermediate its ends as at 31 upon the lower ends of the flanges 29 of each bracket and the channel members 30 serve as carriages for laterally spaced guide rollers, one pair of which is journaled in each end of each channel member 30, as at 33. The outer periphery of each guide roller 32 ext-ends below the bar 11 and is bevelled or chamfered as best shown in Fig. 2 so as to produce a sharp edge for cutting through the sand cushion and rolling on the surface of the concrete bed.

Ropes or cables 34 are secured to the surfacing bar 11 as drawing the surfacer over the sand manually or otherwise.

Braces 36 each extending angularly between the bar 11 and a member 10 may be provided as shown to insure a rigid structure.

In the operation of the improved surfacer, the sand having been spread upon the concrete as shown in Figs. 2, 3, and 4, the structure is placed upon the sand with the guide rollers 32 just inside the curbs 16. By means of bolts 24 the surfacing bar may be vertically adjusted above the foundation, in the manner hereinbefore described, to give any desired thickness of sand cushion. The surfacer is then pulled over the road bed by means of the ropes 34, the angle plate 13 smoothing over or surface leveling the sand cushion, and the weight of the surfacer will cause the sharp edges of the rollers 32 to penetrate the sand and roll directly upon the surface of the foundation 15. Thus a sand cushion of relatively uniform thickness is obtained for the reason that the bar 11 is properly spaced relative to the upper surface of the concrete foundation.

It will be seen that the bevelled edges of the rollers will penetrate the sand without materially altering the contour of the surface thereof.

When the guide rollers pass over minor irregularities in the surface of the concrete as shown at A in Fig. 3, the efiect upon the surfacing bar is materially reduced by reason of the pivotal mounting of the roller carriage, and it has been found in actual practice that the bar is not disturbed to any prac tical extent by such irregularities.

It will be seen that the present surfacer may be used for surfacing sand throughout the length of a road bed without regard to the intersections of other roads, and therefore possesses an advantage over those surfacers which depend upon curbs or forms for their guiding means.

A more important advantage, however, is that the use of the present surfacer results in a sand cushion of substantially uniform thickness, which insures that each brick shall be properly cushioned to resist the shocks and.

strains received by it, and the net result is that a brick road built on a sand cushion surfaced by the apparatus hereof is smooth and has a relatively long life.

It is understood that various modifications of the surfacer described herein may be made at 35 for. the purpose of" without departing from the scope of the claims.

I claim: 1. A sand surfacer for use on a road be having a sand covering, the surfacer including laterally spaced rollers, and a sand surfacing bar supported on the rollers and extending laterally of the road bed, each roller having a sharp periphery extending below the surfacing bar and adapted for penetrating the sand covering and rolling on the road 2. A sand surfacer for use on a road bed having a sand covering, thesurfacer including laterally spaced rollers, a sand surfacing bar extending laterally of the road bed, and means vertically adjustably mounting the surfacing bar upon the rollers, each roller having a sharp periphery extending below the surfacing bar and adapted for penetratlfilg the sand covering and rolling on the road 3. A sand surfacer for use on a road bed having a sand covering, the surfacer including a pair of laterally spaced longitudinally extending supporting members, a laterally extending surfacing bar connected .at each end with one of the supporting members intermediate the ends thereof, a carriage pivotally connected with each supporting member on each side of the surfacing bar and extending longitudinally of the supporting member, and a roller journaled in each carriage at each side of the pivotal connection between the carriage and the supporting member, each roller having a sharp periphery extending below the surfacing bar and adapted for penetrating the sand covering and rolling on the road bed. In testimony that I claim the above, I have hereunto subscribed my name.

NICK DE JOY.

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