US1538619A - Pavement-making device - Google Patents

Description

May 19, 1925.

W. C. BURRELL PAVEMENT MAKING DEVICE Filed DSC. l0, 1925 PiatenteidlMlay 19,V 1.925.

UNITED STATES l 1,538,619 PATENT OFFICE.

WILLIAM C.A lURRELL, 0F KAN'KALKFLIEI,- ILLINOIS.

PAVEMENT-MAKIG DEVICE.

Application filed December 10, 1923. Serial No. 679,587.

T0 all whoml z't may concern:

Be it known that I, WILLIAM C. BURRELL, a citizen of the United States, residing at Kankakee, vin the county of Kankakee and State of Illinois, have invented certain new and useful Improvements in Pavement-Mak-l, ing Devices, of which the following is a specification.

This invention relates to ing devices.

It will be explained as applied to a parting strip or confining wall used to `define vand separate contiguous sections of concrete or similar roadway-or sidewalk.

In building concrete roadways it has become common practice to longitudinally divide the roadway into separated or partly separated sections. Such divisions facilitate the aft of laying the concrete. and 'seems to serve# in a large measure, to prevent subsequent irregular cracking. It may also vfacilipavement mak- I i tate repair and replacement of portions of the pavement. In carrying such work into. practical execution it is essentially necessary that the aforesaid strip of metal shall be irmlyand securelysupported and held on one-edge and that the holding means shall engage the strip -in such manner as to preke'yor-pin to support t e strip.

Vvent anyrelative movement of the connected parts.

One of .the objects is to provide animproved device of the character described.

Another object is to provide an improved, contractible strip-supporting pin for securely holding and supporting the strip edge on duripg the operation of laying the concrete ace.

other obj ectis to provide astrip which in cooperation with the pin will effect nterlocking of the strip sections.

A further object is to provide an improved supporting and holding' p iny which will facilitate the application of the strips and ,which is self-adjusting to hold the strips togetherand support them in place.

vAnother object is to 1provide an improved strip-supporting pin w ich is vself-adjusting `with respect to the orifice into which itmay be driven; which possesses' maximum strength proportional to its :weight ;`v which 1.esily and cheaply be constructed and ap 1e other object is to` rovide an improved .O ther objects and advantageswill hereinafter-(appear from va consideration of the fol-A lowing description, when taken in conjunctlon wlth the drawings, where1n Fig. 1 is a perspective view of two inter? lapped strips as they appear when supported on the ground for the purpose described.

Fig. 2 is an enlarged cross-section taken on line 2 2- of Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig.

Fig. 4 is a^ modification of Fig. 1.

In all the views the same reference characters are employed to indicate similar parts.

/ The strip 5 may be made of suitable metal, such as so-called galvanized sheet iron. The striphas a longitudinally extending laterally projecting rib or bead 6, thru which a pin or key 7 is to be driven into the ground.

In the several figures of the drawings I have shown the pin driven thru corresponding registering holes 8" in the beads near the ends of adjoining strips. In this event the pin 7 not only supports both strips in edge on position, but also holds the lapped ends together. There may be one or more holes 8 intermediate the ends of the strips thru which to insert the supporting pin 7 foradditional strength.

To make a continuous strip of a plurality of sections, the ends are lapped, as shown in Fig. 1 and the pinis placed thru the registering holes. In Fig. 4 the ends of' adjoining strips are abutting to bring the strips in true alignment, and a clip 9 having like registering holes is caused to bridge the joint and the pin is then driven thru all of the holes. A single clip 9 may be used, in which event two pins may be employed.

Another pin may be driven thru the holes shown by dotted lines at 10. Instead of using two pins the clip 9 may be riveted to the 'strips 5 or 5, as at 11. If a more secure jointis desired another clip 9 may be'placed on the opposite sides 0f thestrips and riv-v eted as described or held by use of two pins. yThe pin 7 istapered near its point in two directions so that it will easily pass thru the holes 8. The pin is larger in its mi'di yield/ing fit with the holes.- l

. The Wall of thev pin is uniform in trans- .v'erse thickness. It is preferably punched of sheet metal and formed into parti-cylindrical configuration` having a 'longer vradius (l than the radii of the holes thru which it is to be driven.

'Ihe pin is shown to extend circumferentially toan extent equal to less than one-half of a circle. It may extend further, if desired. It is light, strong, inexpensive, self-adjusting to tightly it the holes, and may easily be driven into the ground, or into an opening in more unyielding material in which it will secure itself because of its transversely contractible nature.

The projection 6 may consist of a crimp in the metal to form a bead. The project-ion stitl'ens the strip and also forms a groove or tongue, as desired, in the cement block. The adjacent block forms the other member of the tongue and groove joint.

The lower end of the pin is tapered in two directions so as to more easily pass thru the holes in the strip into which it is to be driven. The tapering effect is accomplished.

by having the salient edges converge toward each other near the pointed end.

The largest diameter of the pin is from the outside surfaces of its longitudinal terminal or salient edges aso that when the pin is driven into a hole o smaller diameter it will contract transversely by these edges approaching nearertogether andas the pin is made of resilient metal it will tightly engage all of the holes or apertures into which it may be driven. v

Having described my invention what I claim as new and fdesire to secure by Letters Patent, is

1. In combination with a strip having af laterally projecting, longitudinally extending bead, said bead having perforations extending transversely of the wall to receive a pin to be driven therethrough to hold the strip on its edge anda laterally contractible inlarger in diameter than said perfcrations to be driven thru said perforations.

2. In combination with a strip of sheet metal, crimped outwardly near its median transverse dimensions lto form a laterally projecting longitudinally extending bead,

said beadv erforated yin a line substantially parallel with the margins of the strip to receive a pin to support the strip on one side edge, and a laterally contractiblapin larger in its larger diameter to be drlven thru said perforations and into the ground.-

A8. In combination with a strip of sheet metal crimped outwardly to form a laterally' projecting longitudinally extending bead, said bead perforated, near its juncture, with the margins of the strip, and a transversely contractible pin larger in diameter than said perforations to pass thru the perfora-I it is to be driven to hold the strips together.

5. A. pin, for the purpose described, colnprising a trough-like strip of resilient sheet metal curved transversely into parti-circular form and uniformly tapered through-v out the major portion of itsA length and tapered in two directions near its point.

6. A support for pavement parting strips comprising a pin of parti-circular cross section formed from a sheet of metal curved uniformly throughoutthe major portion of its length and having adjacent edges of the sheet near one end converge toward a point. 7. A support for-pavement parting strips comprising a hollow pin of parti-circular cross-section throughout the major portion of its length formed of resilient sheet metal and having the longitudinal edges of the pin near one end` converge toward a point. 8. Atransversely contractible pin made of sheet metal and curved transversely and uniformly throughout the major portion of its length 'and uniformly tapered longitudinally near one end.

In testimony whereof I hereunto set my hand.

WILLIAM o. BURRELL.

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