Improvements in Means for Mounting Safety Locking-bars and the like for Railway Switch and Signalling Apparatus.
Year: 1890

page_text: Date of Application, 5th July, 1890-Accepted, 27th Sept., 1890
COMPLETE SPECIFICATION.
[Communicated from abroad by HENRY JOHNSON, of Rahway, County of Union, State
of New Jersey, one of the United States of America, Engineer.]
Improvements in Means for Mounting Safety Locking-bars and the
like for Railway Switch and Signalling Apparatus.
I LEICESTER BRADNEY STEVENS of Darlington Works, Southwark Bridge Road in
the County of Surrey, Engineer, 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 the clips employed for attaching to rails what are known
as safety locking bars and the like employed in connection with switch and signal
apparatus on railways.
In the accompanying sheet of drawings
Fig. 1 is a transverse sectional view of a flanged rail, a locking-bar and a clip by
which the said bar is secured to the rail and which embodies my invention.
Fig. 2 is a plan of the same, the rail being represented in dotted outlines.
Fig. 8 is an inside face view of what is hereinafter termed the hooked clamping
piece shown in Figs. 1 and 2.
Fig. 4 represents a horizontal section of a portion of the clip and a portion of the
base of the rail taken in the line of Fig. 1. and illustrating a modification of a part
of my invention.
Fig. 5 is a transverse sectional view of a bull headed rail locking bar and clip.
Similar letters of reference designate corresponding parts in all the Figures.
This
The clip consists of two principal members. One of these members is a base
plate A having a hooked jaw a and having dependent from it on the same side as the
said jaw a, a bracket b for holding the pin c upon which oscillates the arm d which
supports the locking-bar B. The jaw a is adapted to fit one edge of the flange of a
rail D, while the upper face of the plate A lies flat against the base of the rail. The
opposite side of the base plate A to that on which the jaw a and the bracket bure
situated, is prolonged in such form and manner that when the plate is applied to the rail
as above mentioned, it projects beyond the opposite edge of the rail as shown at e.
prolonged part has a slot provided through it in a horizontal direction. The other
member of the clip is a hooked clamping piece consisting of a block having upon it
feet or projections g, to fit under the base of the rail on opposite sides of the projection e
of the base plate and having a hooked jaw to lap over the opposite edge of the rail
to that which is engaged by the hooked jaw a, as shown. The said block or clamping
piece has provided in it a slot i for the passage through it of the projection e of the
base plate.
The base plate A being applied to the rail from one side thereof with its
hooked jaw a overlapping the edge of the rail flange and the hooked clamping
piece C being slipped over the projection e of the base plate far enough to bring
its hooked jaw hover the edge of the flange on the other side of the rail, the
clip is tightened by the insertion of one or more keys or wedges jj, through the
slotf of the base plate outside of the clamping piece C, as shown and the clip is
thus made to firmly clamp the rail. The wedges or keys may be secured by
turning their ends over the sides of the clamping piece C, and the projection e,
as shown in Fig. 2.
In order to provide, more effectively, than can be done by mere clamping,
against the movement of the clip upon the rail lengthwise of the latter, I employ
a locking key in or on the base plate on that side thereof on which is the jaw a,
to engage with an opening or notch in the rail base. In Figs. 1 and 2 this
locking key consists of a pink which is inserted into a hole drilled through the

page_text: Jaw a and through the rail flange to receive it: In the example shown in Fig. 4
this locking key consists of a projection k provided within the jaw a and entering
a notch provided in the top of the rail base.
It may be here mentioned that the projections m shown in Figs. 1 and 2 at
opposite ends of the hooked jaw a are intended to serve as stops to limit the
movement of the arm d of the detector bar and that the pin c is canted or
inclined to the rail so that the detector bar B when raised comes close up to the
rail D.
Instead of prolonging the base plate A as described above beyond the opposite
edge of the rail to receive the clamping piece (, it may be stopped short and
secured to the rail by means of bolts passing through the base plate and under
the rail and having hooked ends which clip the far side of the rail when they are
drawn up tight by their nuts.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:-
1. The combination with a base plate having on one side a dependent bracket and a
hooked jaw to engage with one edge of a rail while said plate lies under the base
thereof and having on the other side a transversely slotted projection to project
beyond the opposite side of the rail, of a hooked clainping piece slotted for the passage
of the said projection and a key passing through the slot of said projection outside of
said clamping piece, substantially as herein set forth.
2. The combination with a locking-bar clip consisting of two members having
hooked jaws to engage with opposite sides of the base of a rail, of a key provided in
one member to engage with a notch in the edge of the rail, substantially as and for
the purpose herein set forth.
3. The combination with a rail and base-plate extending across the under side of and
projecting beyond the base of the rail and having on one side a hooked jaw to engage
with one side of the rail and a dependent bracket and having on the other side a
projection beyond the rail, of a hooked clamping piece engaging with the other side
of the rail and with said projection and a locking key inserted through the jaw of the
said base-plate and through an opening in the rail flange, substantially as and for
the purpose herein set forth.
Dated this 5th day of July 1890.
WHEATLEY & MACKENZIE,
40, Chancery Lane, Loudon, Agents.