US1064900A

US1064900A - Insulated rail-joint.

Info

Publication number: US1064900A
Application number: US74582313A
Authority: US
Inventors: Lawrence Griffith
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-02-03
Filing date: 1913-02-03
Publication date: 1913-06-17
Anticipated expiration: 1930-06-17

Description

L. GRIFFITH. INSULATED RAIL JOINT.

' APPLICATION FILED PEB.3,1913.

1,064,900. Patented June 17, 1913.

f? .f e

UNITED STATS LA'WRENCE GRIFFITH, OF YONKERS, NEW' YORK.

INSULATED RAIL-JOINT.

Specification of Letters Patent.

Patented June 17,1913.

Application filed February 3, 1913. Serial No. 745,323.

lie it known that l, LAwnENcE GRIFFITH, a citizen of the United States. and resi dent of Yonkers. county of estchester, and State ot New York. have invented certain new and useful Improvements in Insulated lRail-Joints, of which the following is a specification.

One of the main objects of this invention is to provide a rail joint wherein the splicebars will be formed with inwardly extending rail supporting flanges adapted to be in. direct contact with the rails in order to rigidly support the rail ends, the insulating material used being so disposed that the rail supporting flanges of the splice-bars need not be insulated from the rail ends.

It is the common practice in insulated rail joints in which any form of rail supporting plates or flanges are used to insert between the rail and such supporting plate a strip of insulating material. This insulating material is soon destroyed by the pounding of the rail thereon and for that reason is of great weakness in this type of joint. it is manifest, therefore, that to pro vide an ctlicient insulated rail joint. in which the rails are directly supported by a metal plate in direct contact therewith, is very desirable.

A nother object of this invention is to place a rail support or third tie directly under the ends and between the ties adjacent the ends of the rails. This rail support under the meeting ends of rails is particularly dcsirablo and efiicient when used in connection with the insulated rail joint structure described herein for the reason that said rail support is directly engaged by the inwardly extending rail supporting flanges of the splice-bars.

There are other important objects and advantages of the invention which will appear hereinafter.

In the drawing. Figure 1 is a transverse sectional view of the rail joint on the line l I of Fig. 3. looking) in the direction in dicated by the arrow: ig. Q a similar view on the line Il-II of Fig. looking: in the direction indicated by the arrow; Fig. 3 a plan view of the rail joint: and Fin. 4 a side elevation of the rail joint, the bolts being shown in section at the left-hand end thereof. to show the nonrircular openings in that end of one of the splice-bars.

Referring to the various parts by numerals. 1 desigi'iates the rail ends and 2 the tics torniing the supports for the rails. The spliiebar S is formed at one end with an inwardly extending rail supporting base flange 4; and the splice-bar 5 is formed atv one end with an inwardly extending rail supporting base flange 6. Each of these base flanges extends under and contacts with one rail only, and does not bridge the joint between the rail ends. The upper surface of the vertical rail head supporting web of each splicebar is downwardly and inwardly inclined and between said surface and theadjoining under side of the rail head is interposed a metallic wearing-piece 7 which extends tl'ironglu'iut the length of the splicebar and bridges the joint between the rail ends. The ends of this wearing piece are turneddown as shown at 8 in Fig. 4 to pre vent any longitudinal movement thereof. This wearing piece is also wedge-shape in cross section and tapers outwardly to prevent out 'ard lateral displacement thereof.

interposed between the wearing piece and the rail head and between the splice-bar and the rail is suitable insulation 9. It is manitest that it is not necessary to place insulation between the splice-bar and that rail with which the splice-bar base flange is in contact. it. being only necessary to insulate the splice-bar and wearing piece from that. rail whi h the split-char base flange does not engage. l lowever. for simplicity in assent bline' the parts of the jointthe insulation may be extended throiuiluuit. the length of the bars on both sides of the rails. It Is also mauitest that the bolts need be insulated From only one of the splice-bars. as indicated in Fig. 3. It is clear that the bolts passing through the rail which is resting; on the splicc-bar base flange need not be insulated from the splice-bar carrying said base flange. Plaid bolts must, however, be insulated from the opposite splice-bar. This arrangement permits bolts having non-circular shanks to be inserted directly in splicebars having noircircular openings as shown in Fig. 4'. This simplifies the assembling of the joint and prevents the turning of the joint bolts when the nuts are being tightened. It also permits bolts to be used which are provided with ordinary round bolt heads instead of bolts having angular or nut heads.

The base flanges of the splice-bars form etiicient rail supporting plates which are in direct contact with the rails. The base flange (3 of the splice-bar 5 is extended outwardly to rm the spike flange 6*. This base flange is also suflieiently wide to extend outwardly beyond the splice-bar 3 on the opposite side of the rail, as shown clearly in Fig. 2. Likewise the base flange 4. of the splice-bar 3 is extended outwardly on the splice bar side thereof to form the spiking flange 4 This base flange 4 is of sut e'ient width to extend beyond the rail base and outwardly beyond the splicebar 5 on the opposite side of the rail, as shown clearly in Fig. 11

In spiking or otherwise securing the splice-bar to the tics, a spike a is passed downwardly through the splice-bar 5 at the edge of the rail and downwardly through the base flange 6 into the tie. The spiking flange 6 is secured in position by means of spikes or other fastening means I) arranged along the edge thereof. In view of the fact that the base flange (3 is in contact with the rail it is unnecessary to insulate the spike a from the rail. The other edge of the base flange G secured to the ties by means of spikes c and (I, spikes a passing through the base support and the spikes 01 being arranged at the edge thereof, one of said spikes (l securing the base flange to the tie directly under the meeting ends of the rails. It is to be noted that the spikes c and cl do not contact with the splicebar 3 and that, therefore. said splice-bar is not electrically connected to the ,base flange 6 of the splicebar The splice-bar 3 with its base flange 4 is secured to the tics by means of the spikes e and f. spike a passing through-the splicebar and its base flange close to the edge of the rail base, spikes f engaging the outer longitudinal edge of the spiking flange 4 The other edge of the base flange is secured in position by spikes g and h, spikes 9 pass ing through the base flange and spikes h engaging the outer longitudinal edge thereof. It is to be noted that the spikes g and it do not contact with the splice-bar 5 so that said splice-bar is not electrically connected to the base flange of the splice-bar 3. It is, therefore, clear that only one end of each splicebar proper is spiked or otherwise secured directly to the ties. -By this arrangement of the base supports" or base flanges of the splice-bars the said base supports may be securely spiked to the tie on both of its edges. This is very desirable in that it holds the base support very rigidly in position transversely of the rail base. This arrangement of the securing means also insures the complete insulation of the unflanged end of each splice-bar.

From the foregoing it is manifest that I proyide an insulated joint of very simple construction; which may be very readily as sembled, and in which a minimum amountof insulation will be used and wherein the insulation will be thoroughly protected. It

is also manifest that I provide a base sup port for each rail end in which the rail is directly supported on metal,n insulation be--' ing necessary between the rail base and the rail support. It also manifest that 1 provide a joint wherein the splice-bar need be spiked or otherwise secured to the ties only at one end of the splice-bar. By forming each splice-bar with a rail base supporting flange of sufficient width to extend under the rail 7 base and project outwardly beyond the rail base on both sides, said base supporting flange may be spiked directly to the tie at both of its edges withdut interfering with the complete insulation of the joint.

\Vhat I claim is:

1. An insulated rail joint comprising the meeting ends of two rails, splice-bars, insulation between the spliccbars and the rails, an independent rail support under each rail' end and in electric contact therewith. said rail supports being electrically disconnected from each other, one of said rail supports being connected to one splice-bar and unconnected with the othersplice bar. r ad each of said rail supports extending outwar o beyond the splice-bar to which it not connected.

7 2. An insulated rail joint comprising the meeting ends of two rails, splicebars, insir lation between the splice-bars and the rails and an inwardly extending rail supporii Q base flange formed at one end of each h'di 'sy JILL bar, 'each of said flanges directly cent; with and supporting one rail and out a electrical connection with the splice-bar on the opposite side of said supported rail, each of said flanges extending outwardly beyond the splice-bar to which it is not connected.

3. rln insulated rail joint compr meeting ends of two rails, splice-bar t lation between the splice-bars and the r; and an inwardly extending rai! support base flange formed at one end of each s1 1 t. bar, each of said flanges directly contacting 13;; with and supporting one rail and out of electrical connection with the splice-bar on the opposite side of said supported rail. each of said flanges extending outwardly beyond the splice-bar to which it is not connected, and means for securing said outwardh projecting portion of each rail supporting flange to a tiet said means being independent and out of electric contact with the unconnected splice-bar.

4. An insulated rail joint comprising the meeting ends of two rails, splice-bars illdlltb tion between the splice-bars and the rails. an independent rail support under each rail end and in electric contact therewith, said rail supports being electrically disconnected from each other, one of said rail supports being connected to one splice-bar and unconnected with the other splice-bar. and each of said rail supports extending out nrdly beyond the splice-bar to which i? i not connected. a

5, An insulated railjoini comprising the meeliug ends of two rails, splice-burs, 1n-

ruils, an independent mil support under each rail end and in electric contact therewith, said rail supports being electrically discunnecLed from each other, mil supports being connected to one splicx bar and unconnected with the other splicebar, and each of said rail supports extendsecuring said outwardly gi rfljenfiing pm'lion nf each mil supper! u; a he, 581d means he sulaliun between the splice-bars and the one of said ing GlliWflIdl'y' '-eyon l the splice-bar to which it is 110% mnnecied, and means fur.

ing iml pcndem and out of elmiric comm-l with the uncmmcctml .f'YliCQ-bfil'.

In testimony *whez eef I hereunto allix my signature in the vresenceuf two Witnesses. 20

' LiUiYR-ENCE G RIFFYPH.

Witnesses LILLIAN Mcfil'mn, F. R. Minnie.

(npies of this patent may be obtalnewi for five cents each, by addressing the Commissioner of Yak-ems Weshingtcn, I), C.