US1328107A - Expansion-joint strip - Google Patents

Description

. S. B. WARING.

EXPANSION JOINT STRIP. APPLICATION FILED Amaze. 1'913.

1,328,107. 7 Q Pdt nted Jan. 13,1920.

/ my invention has U E sTATEs ATENT oFFIoE.

swI ToN B. WABING, or WA LINGFORD, PENNSY V NIA, 'AssIGNoR o THE WARING- UNDERWOOD ooMPANY, or PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF 1 PENNSYLVANIA.

ExP NsIoN-JoiNT STRIP.

To all whom it may conoem:

Be it known that'I, SWINTON B.. WARING, a citizen of the United States,and a resident of Wallingford, Delaware county, Pennsylvania, have invented certain Improvements in Expansion-Joint Strips, of which the following is a specification. My invention relates to street paving, and one object of my invention is to provide an improved form of expansion joint for block pavements; the filling for such joint, ac-

cording to my invention, being made in continuous lengths and disposed between the blocks forming the pavement, andhaunches or shouldersprovided by the curbing, rails of the car track, or other similar means.

A further object of my invention is to provide a preformed strip of asphalt or equivalent material. as the filler to form the expansion joint, which strip is reinforced, and a further feature ofmy invention is the method or'process of preparing the improved expansion strip. Theseand other features of my invention are more fully described hereinafter, "refer ence being had to the accompanying drawings, in which: i 1 Figure 1, is a perspective view illustrating a section of a paved street to which the expansion joint fillin forming the subject of lmen applied; i Fig. 2, is a perspective .view illustrating the preformed strip forming the expansion joint filling; I Fig. 3, is a sectional view on the line 3-3, Fig.2; 3 Fig. 4, is across sectional view-of a pavement showing shoulders or curbing with a complete block pavement disposed between As is well known, it is. necessary to provide expansion joints in constructing block avements, inasmuch as temperature changes in winter and summer affect the condition or position of the pavement or the elements forming the same unless means are provided to take care of t e usua expan i n and 90.

traction,

Specification of Letters Patent. Patented J an. 13, 1920. 7 Application filed April 26, 1913. Serial No. 763,807. 7

v The general practice heretofore in thelaying ofblock pavements, whether of brick, stone, wood, or the like, has been to place temporary fillers, usually boards, adjacentto the curb between the same and the blocks which are being laid, and then after the pavement has been laid and rolled, these boards are removed and molten asphalt, tar,

cracks between the blocks communicating with the space adjacent the curb. In other instances, the presence of sand or small' stones may cause the molten material to arch in the space and form an imperfect joint.

I propose to overcome this difficulty by providing a strip of preformed asphalt or,

equivalent material which is laid directly adjacent the curb or other haunch or shoulder in the street and against which the first row of blocks will be placed. To facilitate handling of this preformed strip of asphalt,

I preferably reinforce the same.

In the drawing, 1, 1, represent the blocks of a pavement, which may be of brick, stone, or the like, disposed upon a suitable bed of concrete or equivalent material 2, and between the rail 3 of a car-track on one side,

and the curb 4 of a pavement 5 on the opposite side. The space below the upper and lower flanges of the rail may be filled with concrete, cement or the like, indicated at 6, and interposed between the curb and'the paving blocks and the filling block for the rail and the paving blocks are filling strips 10 of preformed asphalt or equivalent material to provide expansion joints. These strips are approximately an inch thick, al-

though they may be thicker orthinner, de-

pending upon the particular position or use p to which they are to be put; they are approximately the height ofthe blocks with which they are used, and they may be made in lengths of about five feet.

In Fig. 4, I have shown an ordinary block pavement without tracks, inwhlch blocks 1" are laid upon a concre e bed 2, with the filling strips 10 of preformed asphalt .forming the expansion joints interposed between the aving blocks and the curbing.

Tiie preformed strips may be made in any suitable manner, but I have found it convenient to provide a box or mold 11 of the depth, len th and width of a full-sized strip, whic box or mold is first prepared by placing a strip or sheet of paper on the bottom of the same, as indicated in Fig. 5, and then the box or mold may be filled with molten asphalt or equivalent material, as shown in Fig. 6, leaving the paper reinforcing material attached to one surface of the strip or block thus formed. When cool,

' the strip may be readily removed from the box or mold and is then ready for use. Various kinds of paper may be used for reinforcing the strip of asphalt or equivalent materlal, and in practice I have used a good grade of the so-called tar pa er, which is of a fibrous nature, and toug long fiber papers are to be preferred. If desired, textile fabric may be employed in lieu of the paper, and when such fabric is used it may be disposed within the strip of asphalt; the formation of the same being modified to secure such result.

The exposed surfaces of the asphalt strip may be dusted with fine mineral matter,

cement or the like, so that the natural stickiness of the asphalt will be overcome; facilitating the handling of the finished block.

form an expansion joint.

The block or strip forming the subject of my invention is cheap, easily and quickly made, readily handled, and performs the desired function in a'better mannerthan the ordinary material poured into a space to Its employment is much cheaper than the old method of leaving a joint to be filled; and its reinforcement insures its ready handling in desirable lengths.

I claim:

1. A preformed strip for use as an expansion joint filler in the construction of street paving comprising anelongated strip of asphalt having a reinforcement of paper.

2. A preformed strip for use as an expansion joint filler in the construction of street paving comprising an elongated strip of asphalt having a reinforcement of paper secured to one surface of the same.

3. A preformed and elongated strip for use as an expansion joint filler in the construction of street paving, said strip being made of asphalt and having a longltudinal' reinforcement of long'fiber aper.

In testimony whereof I ave signed my name to this specification in the presenceof two subscribing witnesses.

SWIN TON B. WARING.

Witnesses J. ,R. MARTIN,

MILTON LANCASTER:

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