Improvements in connection with Metallic Posts for Railway Signalling Apparatus.
Year: 1889

page_text: Date of Application, 9th May, 1889
Complete Specification Left, 8th Feb., 1890-Accepted, 22nd Mar., 1890
PROVISIONAL SPECIFICATION.
Improvements in connection with Metallic Posts for Railway
Signalling Apparatus.
1, SAMUEL TELFORD DUTTON of Marl Bank in the City of Worcester, Civil Engineer,
do hereby declare the nature of this invention to be as follows :-
My invention has for its object improvements in mounting the necessary signal arm
fittings upon Metallic Signal posts in such a manner that they present a much larger
surface for observation than Metallic Signals as at present mounted.
In a signal post as ordinarily mounted and constructed, a horizontal section through
the
post represents the form of a square, and one side of the signal is presented to view
as the front elevation, upon which side all necessary fittings are mounted, the four
uprights being connected by means of lattice metal strips with their edges outward
Taking a front elevation therefore of an ordinary Metallic Signal post with the
arms &c. attached, only two uprights and the edges of the lattice bars are presented
to view.
In my improved method of mounting and presenting the signal to view, I arrange
that one of the uprights is taken as the centre, so that three uprights and two front
sets of lattice strips, and the reverse surfaces of the remaining two sides of lattice
strips are presented to view in an obleque direction, showing a large proportion of
their flat surfaces
I mount the arms and other fittings by means of cast iron (or other metal as
desirable) brackets or supports, bolted or otherwise fixed to the sides of the post in
such a manner that the arms and spectacle fittings are at an angle of 45 degrees on
plan with the sides of the post so that when the arm is in full view the post presents
for observation the described surfaces of the lattice bars and uprights at one view, and
has the appearance of giving the signal greater substantiality, is much more prominent
and less likely to be passed unobserved in misty weather, than the ordinary Metallic
post as now constructed
It is obvious that the lamp and other fittings will be correspondingly changed and
will be fitted on the angle to the post, and not as heretofore, flush with one side.
Dated this 9th day of May 1889
JOHN P. O'DONNELL,
Temple Chambers, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in connection with Metallic Posts for Railway
Signalling Apparatus.
I, SAMURL TELFORD DUTTON of Marl Bank in the City of the County of Worcester
Civil 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.—
My invention has for its object improvements in mounting the necessary signal
arm fittings upon metallic signal posts in such a manner that it presents a much
larger surface for observation than metallic signals as at present mounted.
In a signal post as ordinarily mounted and constructed, a horizontal section through
the post represents the form of a square, and one side of the signal is presented to view
as the front elevation, upon which side all necessary fittings are mounted, the four
aprights being connected by means of lattice metal strips with their edges outwards.
гр. 621

page_text: to view.
Taking a front elevation therefore of an ordinary metallic signal post with the
arms &c attached, only two uprights and the edges of the lattice bars are presented
In my improved method of mounting and presenting the signal to view,
I arrange
that one of the uprights is taken as the centre, so that three uprights and two front
sets of lattice strips, and the reverse surfaces of the remaining two sides of lattice
strips are presented to view in an oblique direction, showing a large proportion of
their flat surfaces.
I mount the arms and other fittings by means of cast iron (or other metal as
desirable) brackets or support, bolted or otherwise fixed to the sides of the post in
such a manner that the arms and spectacle fittings are at an angle of 45° on plan
with the sides of the post, so that when the arm is in full view, the post presents for
observation, the, described surfaces of, the lattice bars and uprights at one view, and
has the appearance of giving the signal greater substantiality, is much more prominent
and less likely to be passed unobserved in misty weather, than the ordinary metallic
post as now, constructed.
Fig. 1 is,a front elevation of the signal post.
As previously explained in this view three uprights A, B, C are presented to view
together, with 2 front sets of lattice strips d, e, and the reverse surfaces of the two
remaining sides of, the lattice strips f, g.
Figure 2 represents an enlarged front view of the lattice work of the post.
Figure 3 is, a sectional plan H,-K with the lamp removed It will be seen in this
figure that the arm and lamp fittings are mounted at an angle of 45° approximately
with the sides of the post
Figure 4 is a sectional plan L-M, of the post shewing the mounting of the lever
plate on the post.
Figure 5 is a sectional plan O-P, shewing the mounting of the socket wheel on the
post at the ground line
Plates of sheet iron are preferably used to form the base of the post.
Having now particularly described and ascertained the nature of my said
invention and the way in which I propose to carry it into effect, I wish it to be
understood that I do not claim the special construction of the post itself, but what I
do claim is :-
1st. In metallic signals for railways, mounting the fittings at an angle to the sides
of the post, substantially as and for the purposes herein set forth.
2nd. In railway signalling, the combination of post and specially mounted fittings
substantially as and for the purposes herein set forth.
Dated this 7th day of. February 1890.
JOHN D O'DONNELL
OHN P. O'DONNELL,
Agent for the said Applicant.