US1458946A - Reenforced-concrete railroad tie - Google Patents

Description

J. KRUTTSCHNITT REENEORCED CONCRETE RAILROAD TIE June 19, 1923.

2 Sheets-sheaf. lv

Filed March 22 1922 mad 0 gvwentoz J. KRUT'I 'SC-HNITT REENFORCED CONCRETE RAILROAD TIE June 19, 1923.'

Filed March 22 1922 2 sheets sheet 2 I mg w which is made of reenforced concrete, is sub- Patented June 19, 1923.

JULIUS KRUTTSCHNITT', OF NEW CANAAN, CONNECTICUT.

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Application filed March 22, 1922. Serial n5. 545,641.

To all whom it'mag concern:

Be it known that I, JULIUS KRUT'rsoHNrrr, a citizen of the United States, residing at New Canaan, county of Fairfie1d, State of Connecticut, have invented new and useful Improvements in Reenforced-Concrete Railroad Ties, of which the following is a specification, reference being-had to the accompanying drawings, in which Fig.'1 is a. plan of my improved tie; Fig; 2

is an elevation thereof; Fig. 3- is a longi tudinal section but with the cushioning blocks removed; Figs. 4, 5 and 6 are sections on lines 44:, 5-5 and 66, respectively, of Fig. 1; and Fig, 7 is a plan showing the application of the rails to a plurality of ties.

My invention relates to railroad ties and comprises a reenforced concrete tie having therein cushioning blocks to which the tie plates and rails are attached, and which are retained in position in the ties by the securing of the rails thereto. My improved tie is so designed that the reenforcing bars are arranged to give it the necessary strength and are so anchored in the tie as to prevent working therein, to resist unbalanced stresses, when the load on the tie is not equally distributed,

and give it the maximum stiffness and thereby prevent cracking of the concrete. My invention also comprises the various features which I shall hereinafter describe and claim.

Referring to the drawings, the tie A,

stantially rectangular in cross-section ,and has laterally extending flanges 2 which give it a broad bearing and afford a large area to prevent shifting, and recesses orpanels 3 in the-sides thereof into which ballast-may be tamped and which anchor the tie particularly against endwise movement on curves. The rails B are connected to the ties A through the blocks 4, which are preferably made of hard wood. Each block 4: is seated in a pocket or recess 5 arranged diagonally in the tie, Which has under-cut ,recesses but are also for the the tie plates. fAs shown in Figs. l and 7, the two recesses in each tie are arranged at an angleto each other,while in'FigLi the recesses at the same side of adJacent ties, are angled relative to each other. The

diagonal arrangement of the recesses serves to hold'the blocks in positionin the recesses and prevents creeping of the blocks,while arranging them alternately counteracts the tendency of the rail to work transversely of the ties. v

The tie is "reenforced by Z-bars 9, which extend substantially from end to end of the tie. The Z-bars have struck up portions 10 which assist in anchoring the bars firmlyv in the concrete. Secured to theZ-barsnear their ends, and bridging the spacebetween them, are the stirrup-shaped members '11, which extend upwardlyat an angle'from the Z1-bars and serve'to stiffen the tie, hold the ,Z-bars in position and reenforce the concrete at the outercorners of the recesses 5and thus prevent cracking of the. tie.

The tie A is a'lsogformed with a central depressed portion 12, whichnot only serves.

to .lighten the tie "but also afi'ordsa further bearing for ballast.

Ties constructedv in accordance with my;

invention have the following advantages Fewer ties are required than where wooden ties are used, owing to the greaterand more unyielding bearing area provided, which; also results in employing-a smaller number of track fasteners; the wooden blocks which are held in accurately located recesses make the gauge easy to maintain; the blocks are of asize suficient to'afford ample insulation where electrical insulation is required; the 1 blocks act to cushion the rails and thus lessen the noise and vibration and add to the comfort of travel, and bolts and other fastenings between tie and wood blocks are unnecessary and replacement of the'blocks may there- 4 fore readily be made.

The design of the steel reinforcing memhers is of particular advantage, since the flanges and struck-up portions of the Z-bars enable them to be securely anchored in the tie so that working between tie andbars is practically impossible, while the stirrupshaped members not only act to hold the Z-bars in position and to prevent cracking of the concrete aboutthe outer sides of the purpose of resisting torsional stresses.

1 The terms and expressions which I have employed are used as terms of description and not of limitation, and I have no intention, in the use of such terms and expressions of excluding any mechanical equivalents of the features shown and described or portions thereof, but recognize that Various structural modifications are possible within the scope of the invention claimed.

What I claim is:

1. A reenforced concrete railroad tie having in its upper surface a plurality of recesses, the axes of which are arranged at an angle to each other, each recess being adapted to receive a rail supporting block, each recess comprising means for holding one of the blocks from movement except along the axis of the block, and means for fastening a rail to the block arranged with the rail to prevent movement of each such block along its own axis.

2. A reenforced concrete railroad tie haviii-"- ing in its upper surface a plurality of recesses, blocks seating in said recesses supporting rails, and fasteners for securing the rails to the blocks, the sides of the recesses and the rail fasteners comprising means for anchoring the blocks in the recesses, the axes of the recesses being arranged diagonally to the axes of the rails.

A reenforced concrete railroad tie having in its upper surface two recesses, rail supporting blocks seating in said recesses, reinforcing bars of Z-form extending substantially from end to end of the tie, and bars connecting the said Z-bars near their ends, such connecting bars extending at an angle upward in the region of the outer sides of said recesses, said connecting bars acting to anchor the Z-bars in spaced relation in the tie to reinforce corners of the recesses and resist torsional stresses.

JULIUS KRUTTSCHNITT.

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