US909378A - Reinforced concrete tie. - Google Patents

Description

W. DUNSON.

REINFOBUED CONCRETE TIE APPLICATION FILED MAB.27,

Patented Jan. 12, 1909.

Fiyi

INVENTOR WTNESSES ATTUHNEY WILLIAM DUNSON, OF INDIANAPOLIS, INDIANi nnmroncnn CONCRETE Tm.

un. ooasjrs.

Specification of Letters Patent Patented Jan. 12, 1909i Application filed March 27, 1908. Serial No. 423,632.

Lo au whom 'it may concern:

Be it known that I, WILLTAM DUNsoN, citizen of the United States, residing at Indiana olis, -in the county of Marion and State o Indiana, have invented certain new and useful Im rovements in Reinforced Concrete Ties, o which the following is a specification, reference being had therein to t e accompanying drawing.

This invention relates to an improvement in reinforced concrete railway ties hereinafter described in the specification and pari -ticularly pointed out in the claims.

The object of this invention is to provide a reinforcing means for stren thening the concrete body portion of the tie to prevent disinte ation thereof due to the jarring caused by t e passage of trains along the track and restinon said tie, to construct such a tie that t e reinforcin means thereof will be completely-surroun ed on all sides and envelo ed by the concrete to protect the metal, of w ch the reinforcing means' is constructed, from the action of the atmosphere; also, to construct such reinforcing means with in tegral block receiving chairs in the recess of which cushion blocks of a resilient material,

are itted upon which said rails rest and to which they are spiked or otherwise secured. I attain these obJects by means of the reinforced concrete tie illustratedin the accompanying drawings in which like numerals of reference designate like parts throughout the several views.

Figure 1 is a top view of my tie; Fig. 2 is a longitudinal sectional view of the same, taken along the line 2-2 in Fig. 1; Fig. 3 is a transverse sectional view of the tie taken along the line 3-3 in Figs. 1 and 2; Fig. 4 is a transverse sectional view Vof the tie taken along the line 4-4 in Figs. 1 and 2; and, Fig. 5 is a view of the mold showing the reinforcing core situated therein and. the concrete molded around it.

The metallic core portion of the tie, is ro vided with block holding chairs each of w ich is composed of t e base portion 1 and the inf clined side ortions 2 and 3 forming a block reciv' dliannel into which a dovetail formed block 4 of an elastic material, such as Wood, is tted to form a cushion whereon the rails 5 rest and are secured by spikes 6 inthe `usual manner. The sides 2 and 3 are reinforced by the `braces 7 and 8 which extend p5 from the reifgorcingtie bar to the to side portions of the sides 2 and 3, and said races are provided for the purpose of maintaining said sides rigidly in position and preventing them being spru outwardly, so that sai l vblocks 4 will atal times fit snugly between them. The block receivingfchannels formed by the sides 2 and 3, .are ta ered in a longitudinal direction, so that t e wider end of the channel of the chair, situated at one end of the tie, will be situated at the front edge of the tie, while the Wider side of the channel of the chair will be situated at the rear edge of the tie or in other words the longitudinal tapers of said channels in each tie will alternate necessitating the dovetailed cushion block to be driven into the channels situated at one end of the tie from the front ed ev of the tie and the other dovetailed cus ion block to be driven into the channel, situated at the other end of the tie, from the rear edge thereof, so that While a train is moving in one direction over the rails it will tend to move; the rail situated at* the one end of the tie longitudinally to loosen the cushion block on which it bears, the op osite companion rail will tend to tighten t e cushion block on which it bears. n

The chairs 'are connected' and tied`to main- `tain their proper distance apart by a connecting means comptpsed of the upper arch bar member 9 and t e lower arch ar member 10, and said chairs are connected thus in order to secure the proper amount of elasticity and strength to the tie so as to avoid an excessive degree of bending movement being applied to the concrete portion of the tie yto prevent a crumbling or disintegrationthereof.

The construction of this tie is accomlished with facility and cheapness as folowst-The metallic reinforcing core of the tie is placed in osition, edgewise in a suitable rectangular mo ding flask, as the rectangular moldinv 'iiask, shown in Fig. 57 and the concrete willich is made very liquid, is oured around the reinforcing core compose of the chairs and the arch bars, previo scribed and into the spaces situate@ etween the diierent members oi said reinforcing core, to completely surround and inclose sai core to form a solid compact body.

l claim:

1. ln a reinforced concrete tie, the combination with end chair members having lock receiving channels, said annels being narrower at their top portions than their bottom portions and tapered toward one of their. ends, oi upper and ower bar members connecting said chairs, and a concrete bodf surrounding and in'closing Seid chairs en said upper and lower bar connecti members.

` 2. In e reinforced concrete tie, the combination with end chair members having block receiving channels, said channels being nur rower at their top ortions than their bottom portions and the c mnnel situated et one end of said tie, tapered longitudinally sind opvosite to the longitudinal hiper of thc ot 1er companion channel, of upper and lower arch bar members havin their concave sides facing each other an connecting said chairs, and a, concrete bod surrounding and inclosin seid chair mem ers and said arch bars.

n testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM DUNSON.

Witnesses:

THOMPSON R. BELL,Y FRANCIS M. SPRINGER.

Images