Improvements in Anti-friction Devices for Car Axles.
Year: 1890

page_text: Date of Application, 15th Jan., 1890-Accepted, 22nd Feb., 1890
COMPLETE SPECIFICATION.
Improvements in Anti-friction Devices for Car Axles.
We CHARLES BARKER EMERY, Clerk of Boston and CHARLES BRIGHAM, Architect
of Watertown both in the State of Massachusetts, United States of America do
hereby declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in anti-friction devices for car axles
and it is carried out as follows, reference being had to the accompanying drawings,
where:-
Fig. 1 represents a front elevation of the device showing the front oil box in
section.
Fig. 2 represents a vertical section on the line X X shown in Fig. 1.
Fig. 3 represents a cross section on the line Y Y shown in Fig. 2.
Fig. 4 represents a section on the line Z Z shown in Fig. 3.
Similar letters refer to similar parts, wherever they occur on the different parts of
the drawings.
In the drawings a represents one of the sills of a steam railroad car truck to which
is firmly secured the bearing bracket or jaws b b, in one piece with which is cast
the hollow box B, to the underside of which is secured the cover C by means of
suitable fastening bolts as shown.
Said cover serves to enclose the antifriction device so as to exclude dust and dirt
from the working parts.
o is a rubber or elastic packing interposed between the abutting edges of the box B
and cover C said packing having preferably its lower edge resting in a groove in the
cover C as shown in Fig. 2.
D represents the flanged car wheel and D' its axle as usual. E represents the rail
for the wheel D.
Within the hollow box B is journalled in bearings or boxes f and f1 the
shaft F to which the flanged antifriction wheel G is secured, the said antifriction
wheel G is supported and rolls on the axle D¹ as shown in the drawings.
The axle D is provided near its end with a bevelled annular ring d adapted to
enter the groove ġ on the interior of the flange of the antifriction wheel G for
the purpose of preventing a lateral motion of the wheel G relative to the axle D¹
and thus holding said parts in their proper relative positions.
h and are oil and waste boxes respectively for the inner and outer ends of
the antifriction wheel shaft F which boxes are preferably cast in one piece with
the dust cover and provided with the respective spring pressed or hinged
covers H and H' as shown.
I is a leather ring or washer surrounding the axle D' at the back of the hollow
box B as shown in Fig. 2 which ring is held in place within a groove or recess in the rear
part of said hollow box B and serves for the purpose of excluding dust and dirt from
the interior of said box, as well as for preventing waste of the lubricant used on the axle.
K is a shell preferably made of brass or composition which surrounds the axle D' as
shown in Figs. 23 and 4 said shell having an oil and waste receptacle K₁ in its
upper end and baving an opening K" preferably in its lower end as shown in Fig. 3.
Chips or bars L L are held against opposite ends of the shell K by the influence of
springs having their ends resting in recesses made in said chips or bars L L and
recesses made on the interior of the shell chamber B₁ which forms a rear extension
and part of the main box B as shown in Figs. 2 3 and 4. The chamber B¹ is closed
at the top by means of the detachable cover B¹¹ provided with a suitable elastic
packing B for the purpose of excluding dust and dirt at the place where said cover is
secured to said chamber.

page_text: M is a metallic spring interposed between the underside of the cover B¹ and top of
shell K for the purpose of holding the said shell K in its proper position on the
axle D¹..
"'
The object of the side springs is for the purpose of preventing vibrations and
shocks to the car axle D' especially on the application of the brakes or when the car.
is suddenly started or stopped.
In addition to the springs above mentioned we locate between the chips L L and
the inside of the chamber B', elastic rubber springs N N covered witli metal plates n n
as shown in Figs. 3 and 4 said plates being secured in a suitable manner to said rubber
springs, the latter being preferably held in positions shown in Figs: 3 and 4 by means
of their lower right angled ends or feet N¹ N' inserted in corresponding recesses in the
bottom of the chamber B' as shown in Fig. 3..
In case of a sudden jar or shock to the car for instance when the brakes are applied-
quickly, or from other causes, and if one of the springs should then be: com-
pressed sufficiently to allow the chip L to come in contact with its metal pluto n
any further motion of the chips in the same direction will cause the rubber
spring N to be compressed thus still further preventing vibrations and shocks to
the axle and its connections.
The invention is shown in the drawings as applicable to steam cars, with the jaws b
secured to the sill a of a truck supported on yielding springs, as is common in devices
of this kind, but the invention is equally applicable to horse cars electric cars or
similar vehicles in which the bearings for the axles are arranged to yield against
springs located between such bearings and the sills or framework of the car or
in' any other desired manner without departing from the essence of our invention.
Having now particularly described and ascertained the nature of our invention
and in what manner the same is to be performed we declare that what we
olaim is.
1. The axle D¹ having the annular ring d' combined with the flanged antifriction
wheel G journalled in bearings as described and having on its interior the
groove g adapted to receive the said axle ring substantially as and for the purpose
set forth.
2. The axle D¹ and the flanged anti-friction wheel G journalled in bearings
as described combined with the enclosing box B and cover C having front and
rear oil and waste boxes h h¹ and covers H H¹ substantially as and for the purpose set
forth.
3. The axle D¹ and the flanged antifriction wheel G journalled in bearings as
described and the enclosing box B combined with the shell K journalled on the axle
and adapted to yield vertically and laterally relative to said enclosing box substantially
as and for the purpose set forth.
4. The axle D and the flanged antifriction wheel G journalled in bearings as
described and the enclosing box B combined with the yielding shell K the metal chips
or bars L L and springs substantially as and for the purpose set forth.
.!
5 The axle D and the flanged antifriction wheel G journalled in bearings as
described and the enclosing box B combined with the yielding shell K the metal
chips or bars L L with their springs 1 1 and auxiliary rubber springs N N with their
plates nin substantially as and for the purpose set forth.
Thated thin 15th dow‘of Tannery 1900