USRE1442E - Improvement in method of making lap joints of railway-rails - Google Patents

Description

UNITED STATES.

PATENT OFFICE.

AARON DOUGLASS, OF FATERSO'N, NEW JERSEY.

IMPROVEMENT lIN METHOD 0F MAKING LAP JOINTS 0F RAILWAY-RAILS.

Specification forming part of Letters Patent No; 29,591, dated August 21, 1860; Reissue Nv. linda, dated" March 31, 1863.

To all w/wm it may cai/wem:

it known that l, .AARON DOUG-LAsS, of"

paterson, county of Passaic, and State of New Jersey, have invented a new and improved process or method of forming the'ends of railwaybai's where a part or section of the end of cnc rail laps upon and into a part or section 'of the end of another railfand makes a lock-joint, andi do hereby declare that the following is a fu1l,.clear, and exactdescrption thereof, reference 'being had`to the accom- Danying drawings, forming a part oi' this specication.

Figure l is an end "View, taken 'in perspect ive, of theflower. or base'dies. Fig. 2 is a like' view ot' the upper dies. Fig. 3is a sectional riew'of Fig. l through a.' a'. Figs. 4e,'5 `show the ends ot' the rail-bars as formedby the'dies shown-iafg-sfl section taken through two rails atlth'eir joints,

showing the swelled neckV ot" the railsI at the joint` as produced bymy process. 1 `ig.-"7isV a f perspective view of a piece of anordinary T' rail, showing-what part-s are removed before it is subjected to theaction of the dies.

" Like letters in the several figures indicate like part-s;

The object of my invention is to produce a simple and efficient means or process for shaping the ends of railway bars to forma compound lock-joint similar to that before referred to,

and by which such a joint can'be made much .cheaper than by the means before resorted to-` lviz., drilling and chiseling, which was a slow and tedious process, and made the joints eX- pensive; and also to give increased strength to the endsV of the rails Awhe-re they lap by and upon each other. f

.To enable others skilled in the art to fully understand my invention, I will proceed to'de-- scribe its construction and operation.

A, Fig. l, represents the lower or base dieblock, made of suitable hard metal, and in which the 'gure of one-half of the en d of a rail is cut in inta glio.' Theportion a, corresponding with the swelled neck ofthe rail, when finished, and as seen ata/ Figs, 6, isdep'ressed, while lthe portion of the die marked'b, corresponding tothe notcho, Figs. 4, 5, cut out from the bot- -tom'of the rail to form the'lap'f, is -filled upV so as to prevent the metal from spreading at that point when the dies. are subjected to the perfectly,.with the exception of beveling or shaping thesuri'ace h for securing or locking thejointagairistlateral thrust o r motion.- This viseit'ected by the dieplate -hthat is lplaced in another mold, D, Fig. 1', which allows the} end L-eeteefmiewienfimweneemeekfu-esprima in it in--a'n inverted fposition, the basej'o'f the rail Abeing uppermost, the part J1/- being over the die-plate h. The bottom ofthe rail is then struck smartly with a hammer and the surface orpart h` is given a beveled'surface corresponding with that of the die-plate h..

A clampin g screw, W,or wedge may beemployed in this second operation for lock-ing the rail laterally in 'a rm and rigid state while itr'eceives the b10 W 0f the hammer.

' -The part h of the railmay be given any desir'ed shape-.as a half-round, or beveled in part and horizontal in part, or serrated-which will-resist lateral thrustor motion by shaping .the plate hin" the die'. of the desired form.

.The two operations above described will su'fce to form the complete and -perfectlapjoint representediin Figs'. 4, 5.

' The dies C C', Figs. 1,'I 2,"are for finishing the lap and recess, it' for any reason, they are not perfect when taken from thedies--Aand- B. Thesedie's C G( are, in. fact, A and 'Bre-1.

versed, and therail end is simplyturned over `and placedin Gfandthe die C placed en top,

and then'the"two`snbmitted to the blow."

In order to give a clearer understanding of' the method of swaging the ends of 'T-rails like that shown in Fig, 7, so fas to form the comi pound, lap-joint -fwith its several'laps, vertical and inclined surfaces and swelledA neck, I will describe the several sta-ges of the process.'

The ordinary T-rail is vsawed out while hot, as follows: The piece i i, Fig'. 7,- isrst'cut out 'A, Fig. 1, with the sectional or full portieri of the rail resting on the base of the bed or die and the surface of the lap, as sawed out, uppermost. The die-block or counter die, B Fig. 2, is then placed over the rail end while it is in the lower die-block, and by givingl it a smartblow from the steam or drop hammer or Sledge the inclined surface g of the die forms the inclined surface g on the bottom of the lap j', and at the-saine time the ilat surface of the upper die block, and indicated by the dotted lines in B, Fig. 2, formsthe recess k, Figs. 4, 5, and fills up the depression, a, Fi g. l, thus formii'ig with the superiluity of metal, or-tha't obtained from the recess, k, 'and the extent of which is'. indicated by the dotted lines in Fig. '1, the swelled neck of the rail represented in Fig. 'The rail is then removed after this operation from the dies and placed in the die l) in an inverted position,V the sur-v face 7i resting upon the inclined surface h of the die-plate when the rail is properly clamped and the required percussion force appliedto the base of the railto give the surface IL the proper inclination, as shown in Fig. 4. This completes theformation of the severa-l surfaces and finishes one end of a rail-section. The same operation is repeated on. each end of every `rail-section.

a id eicient manner, and at the same time increased strength is given to the ends of -the rails-at their laps by the excess of metal bein g swaged into the swelled neck, as described.

By this swaging process in the formation of -the lapjoint the metal at the ends of the rails is rendered somewhat more dense,

`ing of trains over the rails.

A Vcom plete and *perfectv Jap-joint is thus produced in a simple, rapid,

l and, by so i much, stronger and less liable to injury from the jar and concussion ocr.:I :....ed by the passlhc swelling,r ol' the neck of the rail also serves a veryiinport` ant purpose in giving increased streng-th to the rails at the joints by furnishing a support for the rail-table, and by adding more inet-al to the lapped portions ot the rail, where it is most needed, not only for giving lateral but also vertical support to the rail-table at. thc junction of two rails. i

The swelling of the neck of the ends oi' the rail besides giving inci-easedstrength to that part of the rail alsorendcrs the process of forming the laps by swaging casier and more rapid, because if uo provision was made for the use of the excess of metal which now goes to form the swelled neck, it would require a much greater expenditure of time and power to swage and form the laps, if it 'could be done at all, with practical success.

Other kinds of rails than that commonly known as the T-rail, and as well those used for city railroads and light cars as those used for heavier transportation, may be suagcd, substantially as before described, so as t-'o forni lap-joints, but the extent and forni oi' the parts sawed out may require to be somewhat varied, as may also in some respects the form ot' the dies.

Having thus described iny invention, what l: claim as new, and desire to secure by Letters 1. The process, substantially as herein described, of making and shaping, by means of sawingand swaging combined, the ends ot' railway-bars, which form a lock-joint with each other by the end of onerail lapping upon and into the end set forth.- I

2. Swelling the neck of the ends of rail-bars where lapped upon each other, substantially as described, for the purpose of giving increased strength to the endsof such bars, for the purposes sety forth.

' j AARON DOUGLASS. Witnesses:

S. AD. Law, J. C. WLsoN.

of thevother, substantially as

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