US2250890A - Paving block and pavement - Google Patents

Description

July 29, 1941- D. w. LoNGFELLow A2,250,890l

PAVING BLOCK AND PAVEMENT Filed May 3,\ 1940 www Wam Patented July 29, 1941 Dwight W. Longfellow,

to Elk River Concret 2 Claims.

` Mypresentinvention provides primarily an improved paving block, and secondarily, an improved pavement'laid or made upY of these blocks.

Generally stated, the invention consists of the novel devices, combinations of devices, and arrangement of parts hereinafter described and dened in the claims.

This invention is directed particularly to the provision of an improved concrete pavement made up of monolithic paving blocks especially adapted for use in stockyards, barns, and the like, where a relatively non-skid surface for the travel of livestock is desired.

As is well known, livestock such as cattle, hogs, and sheep, will slip and frequently fall on a smooth concrete pavement or the like and that to prevent such slipping, an irregular surface should be provided. Moreover, the irregular surface should be such that the animals hoofs will not be caught in depressions. Also, the raised surfaces should be of such extent that they will aiord a surface on which the animal may, on occasion, lie with a fair degree of comfort even when slough or bedding is not laid and on which pavement, if bedding is applied, will be quite frequently held against slipping or sliding.

The invention is illustrated in the accompanying drawing wherein like characters indicate like parts throughout the several views.

Referring to the drawing:

Fig, 1 is a view in perspective showing one of the blocks that are adapted to be laid to form the non-skid pavement;

Fig. 2 is a plan view showing the manner in which the blocks are preferably laid to form the pavement;

Fig. 3 is a section taken on the line 3-3 of Fig. 2; and

Elk River; Minn.,.assignerv e Products Company,` Elk'i" River, a. corporation ef Minnesta AApplication May 3,194o, s1'ria1,fi\rq, asgiailf .,j, v (Cien-41)NV Fig. 4 is a section taken on the line 4 4 of I Fig. 2.

The paving block, indicated as an entirety by the numeral 5, is provided with a raised portion 6 cast integral therewith. The marginal edge of the raised portions 6 are, for an important purpose, bevelled, as indicated at 6', so that when the blocks are laid in overlapping arrangement, there will be drainage passages between the overlapping portions of the blocks, and, moreover, there will be formed channels with which the hoofs of the animals may engage slightly to prevent slipping, note particularly Fig. 3. The numeral 1 indicates the flat upper surfaces of the blocks 5 that extend beyond the raised portions E.

The exact dimensions of the blocks may, of

course, be varied, but there is .anadvantage in making the same in substantially the following dimensions, to wit;v` length of blockV 16 inches, twice that of the standard brick; width of block 4 inches or the same width as an ordinary brick; depth of block 2 inches or the same as that of the standard brick; and length of raised portions 6, 8 inches or the same as that of a standard brick. Moreover, the raised portions 6 should terminate about equi-distant from the ends of the block leaving fiat lower surfaces 1 extending 4 inches beyond the ends of the raised portions.

In forming the pavement shown in Fig. 2, the blocks are laid in overlapping arrangement so that the raised portions 6 of the blocks of the one row will be at the longitudinal center of the raised portion of an adjacent row, and the ends of the blocks of one row will be approximately aligned with an end portion of the raised portion 6 of an adjacent row.

By reference to Fig. 2 is shown the preferred manner of laying the blocks, the blocks of a third row, for example, will be aligned with blocks of the first row, and the blocks of the second row will be aligned with the blocks of a fourth row, and so on. This leaves lower surfaces 'I of the blocks forming channels that extend across the ooring,

While the manner of laying the blocks may be varied, they should be laid in an overlapping arrangement so that not only the bodies of the blocks but the raised portions of the blocks of adjacent rows will overlap.

The improved blocks above described having top or raised intermediate surfaces or portions, tend to prevent maximum pressure being applied on the ends of the blocks when the pressure is applied by fairly large objects, such as the hooves of cattle, hogs, or sheep. In the improved arrangement the maximum pressure will be applied to the raised central or intermediate portions of the blocks and this maximum pressure, thus applied on the raised surfaces, will be distributed more or less uniformly over the entire bottom surface of the block, thereby reducing the bearing pressure at the end of the block, and preventing the tipping of the block which is frequently found where the full weight comes on the end of an ordinary plain paving block. The improved design gives suiiicient space between the elevated areas so that the hoof of an animal will come up against the sides thereof and definitely prevent slipping. The spaces between the raised areas is suicient to allow the lower levels, as well as the raised surfaces, to be easily ushed ofi and cleaned.

Another advantage is that the pattern of the paving can be varied to suit different conditions. However, the preferred design is obtained by staggering the successive rows as they are laid so that their raised areas of the blocks in the second adjacentrow will be oset one-half the, length of the raised area, Whilethethird row) lines up with the first.

Still another advantage gained in the use ofY Y- t the improved blocks is that the ends of the blocksv being depressed make it difcu1t--or `impossiblefor a hog to get its nose down to the end of. .the

block and loosen it up. Hogs Vhamer-Lbeen `known` to get one block of the older form-of pavementgloose and then quickly root up a large area of the pavent. The blocksbeing-larger than'o`rd-i'' nary bricks can be laid faster and because -of thel structure of the block itself, makes a more permanent pavernenrt. A A f l Wha/ tl claimtise l l; A- pavement made upl of a multiplicityof the-sides: of thezraised portions of said blocks are beveled upwardly from the planev of the faces of the end vportions of said blocks, thereby formvof 4the, blocks in adjacent rows, thereby forming zigzag channels extending transversely of the 2.- The-struehiey defined in claim 1 in which ing narrow substantially V-shaped drainage passages between overlappng portions of said raised portions! I ""Dl/VIGHTW. 'LONGFELLOW.

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