US894032A - Insulated rail-joint. - Google Patents

Description

'INSULATE IIIIIIIII T. APYL; oooooooooooooooooooooo s.

joints embodying my invention.

' ceive.

v insulation.

ANDREW MORRISON, or PITTSBURG, PENNSYLVANIA.

INSULATED. RAIL-JOINT.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed January 2a, 1908. jsmn No. 412,270.

'To all whom it'm'ay concern: v

- Be it known that-I, ANDREW MORRISON, 0 Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Ini' rovement in Insulated Rail- Joints, of whic the following is a full, clear, and exact, deso1'iptioh,'reference being had to the accompanying drawings, forming part of this speeification in which- Y Figures 1 and 2 are sectional viewsvof rail My invention has rclat'ionto the class ofinsulated-rail .joints, relating more particue 'larly to the mannerof insulating the same, the invention being designed to reduce'the;

amount of insulation required,

It is well known that in insulated rail joints, the greatest wear upon the insulation occurs upon that portion t 20 terposed between the upper ed es ofv the splice bars and theiunder sides o the adja-I cent rails, owing to' the severe poundingwhich these portions jof the insulation re- In aceordancewith-my invention, 1- make the insulation f rthis portion of the joint in separate pieces hich are so arranged that they can be rev psed-edge for ed e, thereby practically dou dingthe life of t .e

Referring to the .drawin the joint bolts,

' interposed between the joint bars and fails.

The insulating pieces or strips 5 which are ,in-

terposed between the upper ed es. of. the.- s hce bars andtheunder sides 0 -,the-heads o the rails are made in a separatepiece from thef ortions 6, which are interposed'betwe'en.

the ower portidns of the s licebars and the 'upper surfaces of the" base anges of the rails,-

being in this respect similar to the mode of insulation em loyed in my'Patent Number cordance with my pfesent 'invention, ho ever, the insulating strips 5are so madethat they can bereversect edge for ed e so that the depending portions 5 thereo which he, against'the upper portions of the'webs-of the rails, ean take the v place of. theportions 5.:5' In this manner, when the-portions fi-becom'e the numeral? designates the rail '3 the sp 'ce bars; 4 one of;

5 and 6"designate' the-insulation, is i the splice amend the underside of the of the rail and having a free portion extend ofa splice bar and the'funder' side 0 scribed.

so cut or Wornas to be no longer efiective,

the pieces can-be readily reversed and thus practically double their life; 'This feature, together with the fact that there is no useless insulation used'adjacent the middle portion of thewebs of the rails very largely decreases the cost ofthe joints.

The-"form of invention shown in Fig.,2

differs from that shown in Fig. 1, only in that instead ofemploying an insulating sleeve-7, where the bolt 4 passes through the web of the rail, an insulating sleeve 8 is employed around the bolt, where it passes through one of the splice bars. This enables the depending portions of the insulation to bemade somewhat longer and to'corne in contact with the bolts, this form, however, being equally reversibleedge for edge.

My invention is obviously applicable to joint bars of various other sections than those shown, being. in ;fact' independent of any particular form of the joint, I claim: 1. In an insulated rail joint, an insulatin strip inter osed between the upper ed co the splice ar andthe under side of the ead of the'rail and having a cc portion extending downwardly between the splice bar and the web of the rail, said strip being reversible edge for edge, substantially'as described. j 2 2. In an'insulatedrail joint, an insulating strip intertpbsed between the upper edge 05 ing downwardly-between the splice bar and the web of the'rail, said-strip being'separate from ,theinsulation which is placed between the lower portion'of the: s lice bar and the base of the rail, and reversi le edge for edge, substantially as-described. 1 Inian insulated rail joint, an insulating strip adapted for use between the ufp er edge t e head of a rail, said strip heaving two portions at'an angle to each other and of substantially-the same-length, and shape whereby thej-strip tween t e head of the rail and the splice bar, iny hand. and the other portion being free and not unof the rail, said strip having two portions of substituted for the part which has been unsubstantially the seme length and shape, one der compression, substantially as described. 10 of said ortions being under compression be In testimony whereof, I have hereunto set ,7 ANDREW )IORRISON. der compression, said strip being reversible Witnesses: edge for edge whereby the portion which has H. M. CORWIN,

been free and without compression may be Gno. H. PARMELEE

Images