US184968A - Improvement in elevated railways - Google Patents

Description

4 Sheets-Sheet 1.

3.. JOHNSON.

I ELEVATED RAILWAY. No.184,968. Patented'Dec. 5, 1876.

THE GRAPHIC CILNY- 4 Sheets-Sheet Z.

J. JOHNSON.

ELEVATED RAILWAY. No. 184,968. Patented Dec. 5, 1876.

4Sheets-Sheet 3. J'. JOHNSON. ELEVATED RAILWAY. No. 184,968. Patented Dec. 5, 1876.

1 I Sheets-Sheet 4. J. JOHNSON.

ELEVATED RAILWAY.

Patented Dec. 54 1876.

TH E GRAPHIC CD-N-\'- ]1i1D STATES "PATENT OFFICE, 1

JOB JOHNSON, BROOKLYN, NEW YORK.

IMPROVEMENT m ELEVATED RAILWAVS.

Specification forming part of Letters Patent No. 184,968, dated December 5, 1876; application filed October 5, 1876 To all whom it may concern Be it known that I, JOB J OHNSON, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Girders for Elevated Railways, Bridges, 850., of

which the following is a specification:

In the drawings, Figure l is an elevation of a girder between two supporting columns and a cross-section of the track. Fig. 2 is a side view of the beam and track, and a cross-section of the girder. Fig. 3 is a crosssection at the line y 3 through the tie-block of I the track-beam. Fig. 4 is a sectional plan of 1 the same at the line a: a: of Fig. 2. Fig. 5 is a plan of the parts shown in Fig. 1. The

other figures are separately referred to.

.The columns a a are placed at the'proper distance apart, both longitudinally andtransgirders rest.

The transverse girders are composed of the tubes 0 0, connected together at the ends by the tie-blocks'd, and at intervals by the clamping trestle-blocks ff. There are two or more of the tubes 0 e; and the trestle-blocks are made in two parts and placed at opposite sides of the tubes 6, and bolted together, having leaden strips between the tubes and trestle-blocks, so as to clamp such tubes in the most firm and durable manner, and at the same time looseness from inequalities is avoided. There are connecting-bars 01 extending from one of the trestle-blocks to the next, to give additional strength, and to retain the blocks in their proper relative positions.

One of the end tie-blocks d is shown in Fig.

6 by a vertical longitudinal section; in Fig. 7 by a vertical cross-section at the line 3 3 Fig. 6, and in Fig. 8 by a sectional plan at the line 3 Said tie-blocks d are each made in two parts and bolted together after the ends of the tubes 0 have been inserted in the openings provided for them.

Sheet lead is placed between the two surfaces of the end blocks that come together, and the space surrounding the tubes in said blocks is also leaded. The lead prevents sound being transmitted from one part to another of thegirder and the tubes can be more firmly clamped to the end blocks, when the lead intervenes between said tubes and blocks.

The end block vd sets upon the cap b, and said cap is recessed beneath the baseof the block; and there is a flanged plate, b,with

an opening slightly larger than the base of the end block, that sets upon the cap b, and to which it is securely bolted.

After the end block has been properly p0- sitioned upon the cap b, molten lead is poured into the space between b b and d, which firmly secures the end block in place and for furthersecurity 1 provide a flange, d upon the bottom and sides of the end block, which acts as an anchor against the lead to hold the end block in place, but allows for expansion and contraction without injury to the parts.

The supplemental-ribbed trestle-blocksl l are made in two parts, bolted together, and adapted to receive and support the longitudinal track-beams, and for this purpose they are made heavier than the trestle-blocks f, and provided with lateral wings l beneath which the tie-rods m m pass, and these tierods diverge and also descend from the end straps n, as in my aforesaid patent, so as to stiffen the girder both longitudinally and transversely. The longitudinal track-beams or girders are made in asimilar manner to the transverse girders, the tubes 0 being provided with the two-part end tie-blocks r, supplemental trestle-blocks s, tie-rods t, passing beneath flanges upon said blocks 8, and trestle-blocks a, and these trestleblocks a are represented as extending above the top tube 0, to form clip-chairs for the flanges and sides of the rails 22. Connecting-bars c are also provided, extending from one trestle block to the next, to keep said blocks properl'y in position, and wherever the tubes 0 are clamped by the trestle-blocks and end tieblocks lead is placed in between said tubes and blocks.

The tie-blocks r rest upon the supplemental trestle-blocks l of the transverse girder, and said blocksl are recessed to form seats for the tie-blocks 'r,as shown in Figs.3 and 4, and each tie-block r is made in two parts, bolted-together, for clamping the ends of the tubes 0, and it is provided with an anchorflange, 'r, and melted lead is poured into the space between the recessed seat portion of the trestle-block l and the base of block r, and around the flange T to secure the lat ter block in place and lessen vibration and sound.

By reference to Figs. 2 and 3, it will be seen that the trestle-block 1 receives the tie-blocks 'r of two adjoining girders, and that there is a slight space between the two girders, in order that the girders may expand and contract independently of each other.

The upper part of the tie-block r is made as a clip, 7', surrounding the flange and sides of the rail, and one side, 7*, of the clip is carried up even with the thread of the rail, as shown in Fig. 1, in order that the car-wheel shall run upon this portion of the clip and pass over the space between the ends of two rails without noise or jar; or if the joint between two rails comes opposite either atrestleblock, u, or a supplemental trestle-block, s, the clip of said block may be made similar to that just described for the tie-block r.

The segmental braces 1 between the trackbeams and the transverse girders, and similar. braces 1 between the transverse girders and the longitudinal an gle-iron beams c, aid to keepthe girders in their proper position and prevent longitudinal and transverse vibration of the parts of the structure, and said braces yield if the girders expand or contract, and lessen the risk of breaking parts and tearing oil the nuts. I

The girder shown by a partial side view in Fig. 9, and by a cross-section at line 1: m in Fig. 10, is precisely the same as that shown in Figs. 1 and 2, except that an intermediate and smaller tube, 0, is added to the girder.

Fig. 11 is a cross-section of the track beam or girder, adapted to receive cross-ties for supporting the rails, and Fig. 12 is a section of the same at the line a m. This girder is made 011 precisely the same plan as that before described, being composed of trestleblocks, supplemental trestle-blocks, end tiehlocks, and connecting-bars; but each block is made with shoes or flanges 1' upon the upper part, to receive the cross-tie r, and braces r bolted to the respective blocks and to the cross-ties, support the outer ends of the latter. The flange r and the rib of the trestle and tie blocks might be extended sidewise,

The girders and cross-ties shown in Figs.

11 and 12 may be placed directly over the range of single columns, said columns having suitable chairs or head-blocks for their reception; but I prefer to use two or more of these longitudinal girders, and extend the crossties r from one girder to the other, so as to receive two or more tracks, and in this case it will generally be preferable to employ transverse girders between one row of columns and the other.

The girder or track-beam shown in Fig. 13 is the same as that shown in Figs. 1 and 2, except that the upper part of the trestle and end tie-blocks does not inclose the flange and sides of the rails; but a flat seat is made for the rails to rest upon, and separate clips r are provided for holding the rails.

I claim as my invention- 1. In a tubular truss or girder, the connecting trestle-blocks formed in two parts, bolted together, and having semicircular recesses for the tubes and longitudinal ribs or flanges running at right angles to the tubes, for strengthening the trestle-blocks, substantially as set forth.

2. The combination of the tubes 0, trestleblocks u, and rails 'v, the latter being clamped by the jaws at the upper ends of the trestleblocks.

3. The combination, in an elevated railway, of transverse girders and longitudinal rail-beams, each made of tubes and trestleblocks, and bearing-blocks upon the girders receiving the end blocks of the rail-beams, substantially as set forth.

4. The transverse girder composed of the tubes 6, end blocks-d, trestle-blocksf, supplemental trestle-blocks Z, connecting-bars d, and

tie-rods m, as set fort 5. The track-beam or girder composed of the tubes 0, end blocks r, trestle-blocksu, supplemental trestle-blocks s, connecting-bars 'v, tie-rods t, and rail '11, the latter forming also a member of said girder, as set forth.

6. The combination, in a tubular girder, of the longitudinal tubes e'e, the transverse trestle-blocks, and the intermediate smaller tubes 0, substantially as set forth.

7. The two-part end block r, or supplemental trestle-block 8 made with a clip portion surrounding the base of the rail, and with one part extended up.even with the tread of the rail, for the purposes specified.

8. The trestle-block f, made'in' two parts, bolted together, and clasping the tubes e, and with a packing of lead between said tube and block, for the purposes set forth.

9. The end block cl, made in two parts, bolted together, with lead between the sur- I V l r faces coming in contact, and provided with Signed by me this 29th day of September, holes or openings to receive the ends of the A. D. 1876. g

- tubes 0, as set forth.

10. The combination, with the longitudinal JOB JOHNSON. and transverse girders, of braces l I inserted at the angles between said girders, when such Witnesses: braces are curved or elliptical, for the pur- GEO. D. WALKER, poses set forth. HAROLD SEBRELL.

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