Improvements in Detonating Fog Signals for Railways and Analogous Uses.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Detonating Fog Signals for Railways and
Analogous Uses.
I, THOMAS JENKINS, of 14 and 15, Moland Street, in the City of Birmingham,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
"
This invention relates to detonating fog signals for use on railways and for
analogous purposes, and has for one of its objects, to simplify the means of
attaching the rail clip or straps and also the
tails
(with which the wheel
treads engage to prevent skidding) to the signal casings without soldering, and
for another object to render the joints and seams of the signal casings water
and damp proof whilst a further object is to prevent signals skidding or being
pushed along or off a rail by the wheel flanges.
In carrying out the first part of my invention in connection with a duplex
or other fog signal the casing is fitted within a supplementary tray and is
there secured by ears formed at the edges or other parts of the tray being
turned over the edges of the said casing.
The lead clips or straps for securing the signal to the rail and also the anti-
skidding tail piece (which is engaged by the wheel tread before the wheel comes
upon the signal itself) are secured in position by small ears or cleats prefer-
ably cut out of the metal of the tray or carrier and turned over or closed down
onto the ends or edges or suitable parts of the lead strips constituting the clips
and tail.
As another form one of the shell components of the signal casing has
integral ears upon its edge which are turned over and closed down to form
cleats or clips which clamp or secure the inner ends or parts of the clips and
tail piece. When such ears are made as a part of the base shell, they extend
from the closing or turned over edge of the said shell and may come either on
the bottom or on the top of the casing, adjacent to the flange. The said ears
may be slit or eyed through which the strips are threaded or passed and secured
by closing over, tucking over or otherwise.
:
In carrving out one form of the second part of my invention in connection
with the waterproofing of the joints or seams of the casing, I propose to include
within the infibulated or closed edges of the assembled parts, thin rings or
layers of india rubber, waterproofed felt. soft metal such as lead or other
material which is impervious to moisture. Or I may serve the opposed edges
of the shells. before closing them together, with a solution of india rubber,
the solvent of which is allowed to volatilize, leaving circumferential coatings
of rubber which are closed in with the joint.
To prevent skidding, I propose to extend the back edge of the casing. or the
trar which carries the signal. into a broad lip or ear, or into separated ling or
ears and onto which the ends of the rail clips are laid and then secured by
turning over and closing the ends of the lips or ears onto the said clips.

page_text: A signal so provided is placed upon the rail with the clips coming at the
after part of the signal, so that the tread of the wheel comes onto the casing
and explodes the charge before the flange can reach the clips. By thus dis-
posing the clips clear of the wheel flange, the pushing along of the signal by
the flange acting against one of the clips is prevented..
.
In duplex signals which are cleft transversely to separate the casing into
two compartments, I propose to make the clefts of both shells narrow and deep
and then after they are socketted one into the other, they are turned over and
flattened so as to make a water-tight joint, which may have a packing of india
rubber or the like included between the folds.
As an improved form of duplex signal, I make two separate and indepen-
dently charged casings of a wedge figure with a strap sinking in the top of
the one and the underside of the other. These two casings are placed together
and secured by a lead or other clip or by closing a connecting ring around and
over the edges thereof, or in other convenient manner.
In order to make a triple close joint and to secure the detonating caps and
their anvils in any determined position, I may provide within the interior of
the casing a supplementary plate pierced with holes for the cap to extend
through and the edges of which are closed over with the edges of the top and
bottom shells, a rubber waterproofing ring being included between them if
necessary.
AFT
Improvements in Detonating Fog Signals for Railways and
Analogous Uses.
I, THOMAS JENKINS, of 14 and 15, Moland Street, in the City of Birmingham,
Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:->
This invention relates to detonating fog signals for use on railways and for
analogous purposes, and has for its object, to provide a simplified means whereby
the attaching the rail clips or straps to the signal casings may be effected with-
out soldering.
In carrying out one form of my invention in connection with a duplex or
other fog signal the casing is fitted within a supplementary tray and is there
secured by cars formed at the edges or other parts of the tray being turned
over the edges of the said casing.
The lead clips or straps for securing the signal to the rail are secured in posi-
tion by small ears or cleats preferably cut out of the metal of the tray or
carried and turned over or closed down onto the edges or suitable parts of the
lead or other strips constituting the clips.
Figure 1 of the accompanying drawing represents a top-side plan of a rail-
way fog signal in which the lead attachment straps are secured to the signal
in accordance with this part of my invention.
Figure 2 represents an underside plan of the same and Figure 3 an edge

page_text: view thereof, whilst Figure 4 shows the said signal in transverse vertical sec-
tion upon the dotted line x.
Figure 5 shows a plan and Figure 6 an edge view of the sheet metal carrier
or tray into which the body or casing is fitted, separately.
Figure 7 is a plan of the said carrier with the strip of lead which is to form
the attachment clip of the signal, connected or secured by turning down onto
it, a series of small ears cut out of the metal of the said carrier.
The same letters of reference indicate corresponding parts in the said
Figures 1 to 7.
a is the casing of the signal, b the carrier tray and c the lead clip. The
tray b, which may either be of the shape shown in Figure 5, or of any other
suitable shape, has a series of cut-out ears or cleats 6, which are turned over
the edges of the strip, as represented in Figure 7, whilst the signal casing is
secured to the carrier tray by corner ears 62 on the latter being turned or closed
over the edges w¹, of the casing, as clearly shown in Figures 1 to 4.
As another form, one of the shell components of the signal casing is pro-
vided with integral ears upon its edge, which are turned over and closed down
to form cleats or clips which clamp or secure the inner ends or parts of the
attachment clip to the body of the signal. When such ears are made as a
part of the base shell, they may extend from the closing or turned over edge
of the said shell and come either on the bottom or on the top of the casing,
adjacent to the flange. The said ears may be slit or eyed, in which case, the
strips are threaded or passed through the said slits and secured by closing over,
tucking over or otherwise.
Figure 8 (Sheet 2) represents an underside plan and Figure 9 a longitudinal
vertical section of a signal in which the lead strip c, is secured, in accordance
with this form of my invention, by providing the turned-under edges a¹, of
the top shell a², of the signal a, adjacent to the flange a, with a pair of oppo-
site ears a, having slits or piercings as, through which the strip is introduced
before the turning or closing down of the ears, as shown in Figure 9, effectually
secures the same to the signal.
i
According to a further modification, which is represented in Figure 10, the
rail clips c may be formed integrally with the edges of the carrier tray b,
which may either be in the ring form as shown by the said Figure 10, or in
the form of a tray similar to Figures 1 to 7, with ears 68, at the edges for
closing over the edge flange of the signal. This combined carrier tray with
clips may be formed in one piece either from lead, tin or other suitable metal.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
First: In detonating fog signals for railways and analogous uses, securing
the signal to the rail through the medium of a carrier or tray provided or
combined with clips for embracing the rail and ears which are turned over the
edges of the signal.
Secondly: In detonating fog signals for railways and analogous uses,
securing the rail clip to the case of the signal through the medium of a sepa-
rate plate or carrier, which is connected to the case and the strip by ears or
turned-over parts.
Thirdly-In detonating fog signals for railways and analogous uses, securing
the rail clip to the case of the signal through the medium of a sheet metal
carrier or tray, the middle part of which has ears or cleats which are used for
fastening the rail clip, whilst the edges have other ears which are turned over
the flanged edges of the casing substantially as herein described and also as
set forth in Figures 1 to 7.
Fourthly In detonating fog signals for railways and analogous uses, secur-
ing the rail clips to the casing of the signal by means of ears or clips formed

page_text: integral with, the closing edge of one of the outer shell components of the
signal, substantially as herein described and also as set forth in Figures 8 and 9.
Dated this 14th day of November 1899.
THOMAS JENKINS.
By Henry Skerrett,.
24, Temple Row, Birmingham, Agent for Applicant.