Improvements in and connected with Railway Chairs.
Year: 1893

page_text: Date of Application, 9th Oct., 1893
Complete Specification Left, 6th July, 1894-Accepted, 11th Aug.. 1894
PROVISIONAL SPECIFICATION.
Improvements in and connected with Railway Chairs.
ROBERT BAULD King's Head Market Place Bexley Heath Kent Engineer
do hereby declare the nature of this invention to be as follows:-
In forming in metal or other suitable material a piece, hereinafter called the
fixed piece, the said piece consisting of a resistance face which may be any
required shape and an inclined plane (at any suitable angle) opposite to and at
any convenient distance from the resistance face.
In providing a second piece or block hereinafter called the moveable piece, the
base consisting of an inclined plane corresponding to the inclined plane on the
fixed piece (herein before described) whilst an opening or slot of convenient size
allows the moveable portion sufficient travel to grip the object to be held between
the said moveable piece and the resistance face before mentioned.
In providing a bolt or stud and nut substantially attached or held in the fixed
piece (before mentioned) the said bolt or stud passing through the opening or slot
in the moveable piece (before mentioned,): by means of which pressure can be
applied to that surface of the moveable piece opposite to the inclined plane, the
effect of the pressure being to move the moveable piece towards the resistance face
of the fixed piece thus gripping any substance placed between the aforementioned
parts. If necessary I reduce the surface of the inclined planes by undercutting
a convenient part which facilitates the aforementioned surfaces being speedily
smoothed should it be desired. To prevent the nut from working loose I make
a plate with a hole corresponding in shape and free to drop on the nut (before
mentioned,) the said plate being provided with any convenient number of projections
of any suitable shape, suitably arranged so that one of the projections according to
the position of the nut is free to drop into a recess in the moveable portion which
effectually prevents the nut from unscrewing.
The accompanying drawings show my invention as applied to a railway chair.
Sheet number one, shows the parts in detail, sheet number two, the general
arrangement with a rail inserted for illustration.
Dated 9th day of October 1893.
COMPLETE SPECIFICATION.
Improvements in and connected with Railway Chairs.
ROBERT BAULD King's Head Market Place Bexley Heath Kent 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:-
I hereby declare my improvements in and connected with railway chairs to be
substantially as follows.
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Firstly," in providing a piece hereinafter called the fixed piece Fig. 1, the said
piece consisting of a resistance face A, which may be any required shape, aud an
[Price 8d.

page_text: inclined plane B, at any suitable angle opposite to and at any convenient distance
from the said resistance face.
The channel C Fig. 1 tends to reduce the area of the inclined plane also the
weight of the part.
66
Secondly," in providing a second piece or block hereinafter called the moveable
piece Fig. 2, the base D consisting of an inclined plane corresponding to the
inclined plane on the fixed piece herein before described, whilst the aperture or
slot E of convenient size allows the moveable piece sufficient travel to grip the
rail to be held between the said moveable piece and the resistance face before
mentioned. Further the inclined base of the moveable piece is provided with a
projecting strip "G" which fits in the channel "C" Fig. 1 thus preventing any
lateral movement on the part of the said moveable piece.
Thirdly," in providing a bolt, or a bolt and nut, or a stud and nut, substantially
attached or held in the fixed piece, the said bolt or stud passing through the
opening or slot D in the aforementioned moveable piece. By any of these means
pressure can be brought to bear on the face H" Fig. 2, the effect of the pressure
being to force the moveable piece towards the resistance face "A" of the fixed
piece, thus gripping the rail placed between. In the event of a bolt only, or a stud
and nut being used the hole "I" Fig. 1, would have to be screwed similar to the
thread on the bolt or stud, thus permitting their screwing in.
In Fig. 3. an ordinary square headed bolt is shown the said bolt being inserted
before the chair is attached to the sleeper. A "T"-headed bolt as shown in Fig. 5.
may also be used which could be inserted or withdrawn at any time the hole "I"
Fig. 1, being made of suitable dimensions to permit of its insertion, the space for
the head being so contrived that the bolt will not revolve when the nut is being
screwed on or off. Fig. 7. is a plain washer.
To prevent the nut or bolt from working loose I make a plate as shown in Fig. 6,
with a hole therein, corresponding in shape and free to drop on the nut or bolt
head, the said plate being provided with a convenient number of projections suitably
arranged with respect to the hole so that according to the position of the nut or
bolt head, the said plate can be placed thereon one of the projections fitting in the
recess F" Fig. 2 which effectually prevents the nut or bolt head from turning
after it has been tightened or screwed up.
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In Fig. 6, the plate has two projections but should finer adjustment of the nut
be required more projections may be used.
If desired insert or attach to the resistance and contact faces of Figs. 1, and 2,
some suitable substance which would afford a certain amount of elasticity, thus
permitting the rail to give a little, the cushioning effect obtained tending to
minimise vibration and noise. Substances such
leather and the like would suffice, but I do not bind myself to use any particular
as india-rubber, wood, fibre,
kind.
Whatever substance is employed the resistance & contact faces of the parts
herein before described would be provided with suitable apertures or projections to
permit any suitable substance being inserted or attached thereto.
Fig. 4 shows a railway chair as herein described, complete with rail inserted for
illustration, but without any cushioning substance attached to the resistance face
of the fixed piece or the contact face of the moveable piece hereinbefore mentioned.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be perforined what I claim is.
$6
Firstly." A railway chair wherein the grip on the rail is obtained by means
of a moveable piece sliding on an inclined plane, the requisite pressure being
obtained by means of a bolt, or a bolt or stud and nut affixed and employed in the
manner herein described.
"Secondly." The application to the resistance face of the fixed piece, also to
the contact face of the moveable piece, of some suitable substance which will form
a cushion for the rail thus reducing the vibration of the engine and carriages and

page_text: making less noise, it being understood that either of the faces may be so cushioned
should only one be required.
Thirdly." The employment of the plate as herein described which prevents
the nut or bolt from turning after it has been adjusted.
Dated
July 1894.
ROBERT BAULD.