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Патент USA US2072619

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March 2, 1937.
c. A. DISBRO‘W
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2,072,619
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vPatented “Mar. 2, 1937
2,072,619
UNITED STATES PATENT OFFICE
2,072,619
FLEXIBLE RAIL JOINT
Clarkson A. Disbrow, New Rochelle, N. Y., as
signor, by mesne assignments, to Poor & Com
pany, a corporation of Delaware
Application March 7, 1931, Serial No. 520,902
3 Claims.
This invention relates to rail joints, and has
particular reference to improvements in rail
joints of either the head-contact or the head
free type in which provision is made for substan
Cl tially uninterrupted transmission of the wave mo
tion of the rails through the joint.
'
The invention has special reference to a splice
bar construction designed for intermittent con
tact with and clearance from the rails within
10 zones spaced longitudinally of the bar, whereby,
(Cl. 238-243)
erence denote corresponding parts in related
views:
Figure l is a side elevation of a rail joint em
ploying a splice bar constructed in accordance
with the invention.
Figure 2 is a transverse section on the line 1-1
of Figs. 1; and
Figure 3 is a transverse section on the line
8-8 of Fig. 1.
‘
when tra?ic passes thereover is permitted. Thus,
rail end batter is materially reduced as compared
In the embodiment of the invention herein il
lustrated, the rails are designated as R, R’, re
spectively, and the splice bar as B, and each rail
is inclusive, as usual, of a head In, a web II and
a base ?ange l2, and the head H] is merged with
the web I I through a head ?llet [3 in accordance
with the rail end batter noticeable in connection
with general practice.
when the bar is embodied in a joint, flexure of
the rails within the length of the joint in accord
ance with the natural wave motion of the rails
The‘ splice bar consists essentially of a head M,
to permit transmission of the rail wave motion
through the joints, and at the same time the life
20 of a joint embodying splice bars constructed in
accordance with the invention is considerably
prolonged as compared with ordinary rigid joints,
because of the fact that the provision for ?exure
of the rails relative to the» splice bars within the
25 length of the joint materially reduces the de~
structive in?uence of this rail ?exure upon the
joint considered in its entirety. "
i The present splice bar is preferably, though
not necessarily, of the headfree type, the same
'30 preferably being constructed to take loading en
gagement at the upper inner corner of its head
with the head ?llets of both-standard and head
free rail, and in addition, to have clearance at
its head from the rail heads, whereby the ad
35 vantages of a headfree joint are combined‘ with
the advantages inherent to a bar constructed to
have intermittent contact with the rails in the
a web l5. and a foot IE, but in sectional shape
and general design said bar may be varied within
Accordingly, the invention has in view to pro
40 vide a splice bar which embodies a novel con
0
'
with rail joints which are lacking in provision
manner aforesaid.
,H
relatively wide limits, the head of the bar pref
erably, but not necessarily, being provided at its
upper inner corner with a transversely rounded
rib H to take loading engagement with the head
?llet l3 of either a headfree or a standard rail,
and, in the event the bar is to be used with stand
ard rail, the head of the bar also being formed, 5
preferably, for clearance from the underside of
the rail head, this desired clearance being in
herent to the use of the bar with headfree rail
because of the removal of the lower, outer cor
ners of the heads of rails of this type.
‘According to the particular embodiment of the
invention illustrated in the ?gures, the rib or
rounded bearing member l‘! at the upper inner
corner of the splice bar is formed medially and
at its ends, as at £8 and I9, respectively, for load 35
ing engagement with the head ?llets of the rails,
while between these loading portions of said rib
the same is deflected downwardly as at 2|], 20,
respectively, for clearance from the head ?llets
40
struction designed to permit substantially free
of the rails.
transmission of the wave motion of the rails
formed medially and at its ends, as at 2‘! and 22,
respectively, for ?shing contact with the upper
faces of the rail ?anges, and between said por
tions 21 and 22 is de?ected upwardly, as at 23, 45
23, respectively, for clearance from the rail
through a joint employing said bars, which is of
relatively low production cost, which is strong
45 and ‘durable, and which serves to impart ample
rigidity to a joint where rigidity is required.
With the foregoing and other purposes in view,
which will become more fully apparent as the
nature of the invention is better understood, the
50 same consists in the novel features of combina
tion, construction and arrangement as will be
hereinafter more fully described, illustrated in
the accompanying drawing and de?ned in the
appended claims.
55 In the drawing, wherein like characters of ref
At the foot of the bar the same is
?anges.
The medial head ?llet and rail ?ange engag
ing portions “3 and 21 of the bar are of a length
to extend outwardly from the end of each rail a
distance approximately equal to the length of
the zone of maximum wear upon the rail ends,
While the head ?llet and rail ?ange engaging
portions I9 and 22 at the ends of the bar pref
erably are substantially equal in length to the
2
2,072,619
length of the clearance portions 20 and 23 of the
bar.
In forming the bar the same preferably is
rolled to uniform section throughout its length
and the clearance portions 20 and 23 thereof
preferably are thereafter provided by subjecting
the bar to pressure between dies, or by any ap
proved mill or shop practice, thereby to make
the necessary displacements or movement of
10 metal so that the rail contact and the rail clear
ance portions referred to will properly be formed
15
termittent rail clearing portions in the bar which
are of reduced height as compared with the
height of the rail contacting portions, thus insur
ing a su?icient ?exibility of the bar to carry out
the purposes of the invention.
Without further description it is thought that
the features and advantages of the invention will
be readily apparent to those skilled in the art,
and it will of course be understood that changes
in the form, proportion and minor details of
construction may be resorted to, Without depart
without vertical or lateral deformation of the
ing from the spirit of the invention and scope of
web and without lateral de?ection, bending or
bowing of either the head or foot portions of the
the appended claims.
bar.
It is apparent that the bar B is not materially
weakened by the provision of the clearances 20,
23 therein, and the bar therefore is of substan
tially equal strength to a bar of equivalent sec
20 tion having contact throughout its length with
the rails.
On the other hand, because of the
clearances 20, 23, it is equally apparent that the
wave motion of the rails is permitted to freely
pass through the joint substantially without in
terruption, whereby only a relatively minor
amount of batter of the rail ends occurs, and
whereby the joint as an entirety is proportionate
ly relieved of the destructive influence of traf?c
passing over the same. Furthermore, the joint
30 bolts are more readily kept tight, the oppor
tunity for wear on the joint bar, the rails and
the joint bolts is reduced, and the maintenance
cost of the joint is correspondingly reduced and
the life of the joint correspondingly prolonged.
35
The drawing illustrates that in instances
where bolt holes occur within the length of the
clearance portions of the bar, enlargements 25 of
metal may be allowed to extend into said clear
ances so as not ‘to unduly weaken the bar in the
40 vicinity of such bolt holes. Moreover, the draw
ing also illustrates the movement or distribution
of a sui?cient amount of the metal of the bar
from the regions of the clearances 20—23 to in
sure ?exing or yielding of the bar to bending
45 strains i without materially decreasing the
strength of the bar. They also illustrate that the
bar may be formed for medial clearance at its
foot from the rail ?anges, as at 26, and for the rail
?ange contacts at I8, 21, I9, and 22, without any
50 vertical or lateral deflection of the web and with
I claim:—
1. In a rail joint, the rails, and a splice bar
having loading engagement at the inner upper
corner of its head medially and at its ends with
the head ?llets of the rails, the head of said bar
being formed for clearance from the rail head
?llets between the said head ?llet contacting 20
portions of the bar, the bar having bolt holes
within the lengths of said clearance portions, re
spectively, and said bar further having enlarge
ments of metal in line with said bolt holes extend
ing into said clearance portions.
having base loading engagement at its ends with
the rail bases, clearance inwardly of each end
from the rail bases, and base loading engagement
inwardly of said clearances with the rail bases, 30
the bar having bolt holes within the lengths of
said clearances, respectively, and further having
enlargements of metal in line with said bolt holes
extending into said clearances.
3. In a rail joint, the rails, and a splice bar hav 35
ing loading engagement at the upper inner corner
of its head medially and at its ends with the head
?llets of the rails, the head of the bar having
clearance throughout its length from the under
sides of the rail heads and clearance from the 40
rail head ?llets between the said head ?llet con
tacting portions of the bar, said bar having base
loading engagement at its ends with the rail
bases, clearance inwardly of each end from the
rail bases, and base loading engagement inward 45
ly of said last mentioned clearances with the rail
bases, the bar having bolt holes within the lengths
of said clearances, respectively, and further hav
ing enlargements of metal in line with said bolt
50
holes extending into each of said clearances.
out lateral deflection or bowing of either the head
or foot portions of the bar, thereby providing in
25
2. In a rail joint, the rails, and a splice bar
CLARKSON A. DISBROW.
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