USRE8762E - Improvement in methods of securing fish-plates to railway-rails - Google Patents

Description

.Pittsburg, in the county of Allegheny, State Bars to Rails of Railways by means of Tubudrawings,

to the ordinary eyelet. of parts. is wanted, the flaring tubular rivet will answer that end; but when'once placed,

heads thereon, in contradistinction to the I my invention, 1 will proceed to describe the washers, and tubular rivets.

maybeof such form' as are most generally lnsed. To unit'e th'ese splice-plates firmly to i stead of theordinary screw-bolt and nut, These washers,

, splioe-plateeare, by ohinery, formed lntoia squareshoulder next].

U ITED STATES PATENT OFFICE.

EDWARD BOURNE, OF PITTSBURG, PENN SYLVANIAZ IMPROVEMENT IN METHODS OF SECURING FISH-PLATES TO RAILWAY-RAILS.

Specification forming pint of Letters Patent-No. 204,476, dated June 4, 1878 Reissue No. 8,702, dated J unc 17, 1879; application filed December 30, 187B.

' To all whom it may oonoem:

Be it known that I, EDWARD BOURNE, of

of Pennsylvania, have invented a certain new and useful Improvement in Securing Splicelar Rivets; and I dohereby declare that the following is a full and exact description thereof, reference being bad to the accompanying and to the letters of reference marked thereon.

Heretofore all tubular rivets used in uniting material objects have for that purpose their ends spread or flared-out, so as to form thereon a sort of hollow conical head, similar Where a mere union the difliculty of withdrawal makes it for some purposes. very objectionable.

Now, my invention-consists in securing the splice-plates to rails of railways in the formation of fish-joints by upsetting the ends of the tubular rivets employed, and thereby forming spreading out process.

To enable others skilled in the art to use same.

In the aecoinpanyin'g drawings, which form part of my specification, Figure 1 is a perspective view of two railway-rails joined together by means of fish-bars and my improved tubular rivet. Fig. 2 is a transverse vertical section of one of said rails with the splice-'plate'x The rails o, splice-plates Irate washers e the, rails,\Imake use of a tubular rivet, B, in -V.

rivets are to be of such length that their ends will project about half an inch when placed in the'holes through the splice-plates, rails, and

and thick enough to withstand successfully the upsetting process. As soon as the rivet is placed in position, so much of. its: ends as project beyond and outside of the means of suitable ma tral bore. Thus each rivet to and. against the splice-plate D washer 9,

as the case may be, without enlarging the di-' ameter of the interior of the tubular rivets.

In case it should become necessary to remove the rivet any suitable machinery for that purpose can be used.

In order to illustrate some means for carrying my iuvention'into effect, I have shown in Fig. 3, Sheet II of the drawings, an end elevation of one of. the rails, and therewith an implement for enlarging the ends of the tubular rivet. In Fig. 4 of the same sheet I have also represented a sectional viewof a railwayra'il, the splice-plate, rivet, and an implement for unfasteningand releasing said rivets.

Referring by letter to the said figures, H is a U-shaped clamp, the extremities of which nished with a conical projection, as shown in dotted lines, Fig. 3, the largest diameter of which just equals the size of the hole through the tubular rivet intended to be operated on. Immediately around the point of its largest conical diameter the tool is encircled by a col-y lar or flange, S, in width a little more than the thickness of the tubular rivet. Supported by the other'leg of the U on the same axial line, is arranged a hollow seat,R, as shown more clearly in Fig. 4, and: I D

within this seat -I secure a tool composed of a short rod, as indicated by dotted lines B, Fig. 3, the same having a collar, t, and a conical end or mandrel, I, (also shown by dotted lines, Fig. 3,) said mandrel corresponding in size and form to the conical mandrel 1 upon the opposite end of the U-shaped bar H.

On the application of a'long. lever to the screw, a powerful pressuremay be brought to bear on both ends of the rivets iinultaneously, sufficient to crush, stave up, and thicken the projecting ends, so as to. form a head thereon,

and that without flaring or spreading its cenin regular successive order.

In case it should become necessary to-re move a rivet, the conically-pointed tools may Through one end of shaped clamp H, and

may be fastened square be-taken out from the clamp, so that on the application of the clamp to the rivet it will be 'The method of securing fish-plates to rail wayrails wit-h tubular rivets,lby upsetting found that the hollow of the screw will fit over (in contradistinction to the spreading process) one end of the rivet, and the hollow of the seat R in the opposite leg of the clamp over the 1 other end of the rivet, and when screwed down, on the insertion of a flat ortightly ended steel rod or drift, X,'in the hollow of the scre\v,'the rivet may be, by a few sharp blows, driven out.

. Having therefore described my improvement and also a eonveniently-constructed device for carrying the same into efi'ect, what I claim isboth endsof a tubular rivet, so as to form heads or shoulders upon both ends thereof, and without enlarging its interior diameter, after the said rivet has been placed in position through the fish-plates and rail, substantially as specified. r

BOURKE.

A. C. JOHNSTON,

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