Year: 1889

page_text: Date of Application, 18th June, 1889-Accepted, 9th Nov., 1889
The clip or clamping mechanism comprises the two clamp-springs bb, a large
releasing pin c, two smaller ones d, d, and a spiral spring f. The skid is provided
with a gently sloping and slightly hollowed mounting surface a to which is connected
in front a moveable and hardened point B, that causes the railway wheel to run up the
skid A.
The moveable point B always rests firmly on the rail and having no weight to carry,
cannot get bent.
The skid is to serve for stopping railway carriages and is laid for this purpose with
its under surface on the head of the rail.
In order to prevent the skid from falling off the rail from concussion or any
other cause, it may be provided with a clip or clamping arrangement as shown in
Figs. 2 to 5. The clip or clamp is constructed in such a manner as to allow the
skid to slide along whilst a railway wheel is running up it, thus allowing the
carriage to come to rest gradually. The springs b, b, are fixed on both sides of the
clip end of the skid A by the end bolt or by rivets; they are bent upwards and passed
forward along the outsides of the side-plates or cheeks D, D, and then through the
notches in the latter, clutching the rail tightly with the curved tong-like ends ¹¹ so
as to hold the skid firmly to the rail whilst the wheel is running up it. The large
releasing pin has its lower end shaped like a wedge, passes through the middle of the
sole of the shoe at an inclination upwards, and stands out above the surface on which
wheels are to mount about 10 millimetres. The spiral spring encircling the releasing
pin c, and resting with its lower end on the skid and with its upper end against a
washer held in position by a cotter or split pin through the releasing pin c, fulfils
the purpose of keeping the pin c normally pressed upward and at the same time of
aiding the wheel, as soon as the carriage has been brought to a standstill by the wheel
mounting the skid, to run off is more easily.
As a shoulder is turned on the upper part of the pin c, the latter can only be pushed
up by the spring as far as that shoulder, and thus cannot stand out more than is
necessary. The two smaller pins d, d are rounded off where they meet the pin c in
the middle, and are for the purpose of simultaneously pushing aside the clip or clamp
springs, when the wheel has run up and has pressed down the pin c so as to force out
the pins d, d until their inner ends have become flush with the insides of the side
plates or cheeks D D, whereupon there will be nothing to prevent the skid from sliding
along the rail. The larger pin c when pressed down acts on the smaller pins d, d,

page_text: with its wedge shaped lower end. After the checked carriage has run back again off
the skid, the latter will be again held in position by the clip or clamp springs b, b.
Since the wheel of the checked carriage after having run up the skid A and
pressed down the pine cannot continue to turn on the skid, neither the pin c nor any
other part of the clamping mechanism is then required to continue to offer any
resistance.
Having described and ascertained the nature of the said invention and in what
manner the same is to be carried into practical effect I hereby declare that what I
claim is
1. A skid for retarding and stopping railway vehicles consisting of a skidding
part A with a curved surface for a wheel to mount upon a moveable point B and side
plates or cheeks D, D.
2. Providing a skid for railway vehicles with a clip or clamping arrangement for
preventing the skid from falling off a rail such clip or clamping arrangement con-
sisting of or comprising clip or clamp springs bb a releasing pin c two other pins d, d,
and a spiral spring f, the whole arranged substantially as described.
3. The combination of parts constituting the skid for railway vehicles constructed
arranged and operating substantially as herein described and illustrated.
Dated this 18th day of June 1889.
W. LLOYD WISE,
Per F. J. B.,
Applicant's Agent.