USRE10953E - Cable railway - Google Patents

Description

G. W. DOUGLAS.

CABLE RAILWAY.

Reissued Aug. 28

I! 01mm PI-lo-Lm, W nc.

GEORGE W. DOUGLAS, OF S PATENT OFFICE.

AN FRANCISCO, CALIFORNIA.

CABLE RAILWAY.

SPECIFICATION forming part of Reissue Original No. 867,137, dated July 26, 1887. Applicatio To all whom it may concern:

Be it known. that I, GEORGE W. DOUGLAS, a citizen of the United States, residing in the city and county of San Francisco, and State of California, have invented certain new and useful Improvements in Cable Railways; and I do hereby declare that the following is a full, clear, and exact description of my said invention, reference being had to the accompanying drawings.

My invention relates to improvements in cable-railway construction; and it embraces certain improvements in skeleton frame-work for subway and track of such roads, an improvement in chairs or supports for the rails, and a novel bolt or fastening for securing the rails to the supports.

These improvements are constructed, applied, and carried out in accordance with the following description, in which the accompanying drawings are referred to by figures and letters.

Figure 1 is a vertical section through the subway and track, showing the frame-work before the cable-tube is cased in and the trench filled in. The section is taken across the track and in front of one of the transverse frames or brackets. Fig. 2 is a top view of the framework and rails. Fig. 3 is a vertical section taken at about the line as as, Fig. 1. Fig. 4 is a view of the rail chair and fastening on a larger scale. Fig. 5 is a detail view of the bolts or fastenings in place.

Similar letters of refereneeindicate like parts in all the figures of the drawings.

In the construction of subways and tracks of cable railways at the present time a skeleton frame-work is made of iron bars properly shaped and bolted or riveted together to form supports for the rails and the slot-irons, and to produce a skeleton tube between the railsand below the surface of the track. This frame-work is most generally formed of separate frames or brackets that are'set up at intervals of space apart in the trench, and the rails and slot-irons being laid and bolted down to the supports furnished by each bracket, the filling of earth or concrete is laid in around this skeleton structure.

My improvement in such frame-work consists in constructing the same of separate frames or brackets formed of angle-iron bent d Letters Patent No. 10,953, dated August 28, 1888.

n for reissue filed September 7, 1887. Serial No. 249.042.

to shape and bolted or riveted together, as shown in Figs. 1 and 2.

The shape of the part d is determined by the form and size of the cable-tube to be made, and conforms to it in cross-section. It is made by bending up a length of T-iron into a loop, with the ends standing upright and together. To the bottom of the loop, against one side of its web, is bolted or riveted the part 6, previously shaped to fit around the curved part of the loop. 'Its ends or straight members stand out laterally, and are carried up to suitable height to furnish supports for the rail-chairswhich aresecured directly upon their tops. The outer ends of these braces e are joined to the sides of the upper ends below th transverse tie-bars f. A

e slot-irons by the ngle-iron, or a bar to its web, is well adapted bracket, and in placing the two parts (1 e together the flange should be set against the web of the loop-iron, so that the other part standing out horizontally forms a wide base to the bracket to rest on the foundation on the bottom of the trench. The slot-irons a a are set into the opening between the upright ends of the loop, and are bolted to the flanges on the inside at every loop.

The rail-chair g, which is also a novel feature in this construction,consists of a flat plate with flanges h for bolts, to secure it to the tiebar and part cof the bracket, and its face is of suitable breadth to take the meeting ends of two adjacent rails, so that it serves to support the same at each joint without requiring fishplates, the lengths of the rails being suitably proportioned to bring the j oints upon the chair at a bracket.

The flange of the chair is bolted against the outer face of the tie-bar, as is well shown in Figs. 1 and 2, and in this construction, where the faces of the two webs or flanges of the parts at and e do not set in line, it will be noticed that the thickness of one flange requires to be taken up at the chair in order to bring the tiebar into line. This can be done by bending an offset in the tie-bar at the outer end, or, as I have shown in the drawi plate, 2, of suitable thickness between the tiebar and the face of the flange to which it is bolted. These chairs form a bed or support with a single flange standing at a right angle for the part eof the quite close 1 the loop at or near ngs, by setting a [I employ a bolt, 6, with a threaded shank 1 flange,

time rails that cannot spread or contract,

id under all conditions.

down to its bed or supports, of peculiar construction, for a nut, and a double head or an extension on the opposite audio firm and ri Tofasten the rai side of the hook that takes the flange, which,

when the bolt is drawn down to its seat on the will come to a bearing on the surface of the chair or support beyond the rail-flange. The construction of this bolt is well shown in Figs. 1, 3, and 5 of the drawings. The hook or part of the head that takes the flange has the usual form and lateral projection from the shank, and the oppositely-extending part k is of about the same project-ion, but with its bearin surface at the outer end suitably formed by th ckening the metal or by bending it down, asshown, to compensate for the thickness of the rail-flange. When such a bolt is applied and drawn down to its place against the flange of a rail, it will withstand any angular strains and forces arising from lateral pressure against the rail. By this projection onthe opposite side of the head the shank is kept upright and perpendicular to the face of the rail-flange, and the nut of thebolt can be brought up flat against the bottom of the chair to a close and even hearing.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The transverse frame or section for cable railways, consisting of a loop formed of T-iron bent into the shape of the tube or tunnel with the horizontal flange inwardly, in combination with theyoke of angle-iron bent to fit the lower curve of the loop, having its vertical flange bolted to the vertical flange of the loop around the curve, and its ends extending upwardly to a point beneath the rails and connected with the upper ends of the loop by transverse tie-bars bolted to both, substantially as herein described.

2. The improved track and slot-iron supporting frame for cable railways, consisting of a loop formed of T-iron and an exterior yoke of angle iron, the two being bent into the same curve at the lower part and bolted together around the curve, so as to present a base comprising the two horizontal flanges, the upper ends of the yoke and loop diverging, so as to support the track and slot rails, respectively, in combination with. the uniting bars or braces, substantially as herein described.

3. The improvement in cable railways, consisting of the transverse slot-irons and tracksupporting frames formed ofT-iron and angleiron, as shown, in combination with the railsupporting chairs bolted to the frames, and having the double-headed bolts constructed to rest upon the flanges of the rail and the top of the chair, substantially as herein desci'zhed.

4. The herein-described bolt or fastening for holding down a rail to its chair or support, consisting of a body having a threaded shank for a nut, a hook or projecting head for the rail-flange, and an offset or lateral extension opposite to the hook or head, substantially as herein set forth.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE W. DOUGLAS.

Witnesses:

CHAS. E. KELLY, O. W. M. SMITH.

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