Fastenings.
Year: 1887

page_text: Date of Application, 24th Feb., 1887.
Specification Accepted, 25th Mar., 1887
or Fastenings.
1, JOHN IRELAND of 11. Ireland's Lane Dundee, in the County of Forfar, North
Britain, Machinist 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, that is to say :-
My said Invention has for its object to construct and combine parts in an improved
manner to form means for fastening railway rails in their chairs, the same being a
durable and economical substitute for the ordinary wooden keys, and less liable to
become loose or to be affected by atmospheric influences.
Figures, 1, and 2, on the accompanying sheet of explanatory drawings are a plan
and a sectional elevation showing a rail as secured in a chair by means of my improved
devices. Figure, 3, comprises three views of a small locking detail. Figures, 4, and 5,
are a plan and a side elevation of the key or main part; and figures, 6, and 7, are a plan or
edge view and an elevation or face view of a bolster or separating plate. Figure, 8,
is a horizontal section corresponding to a certain extent to figures, 1, and 2, but also
showing an addition which may be used if desired. In these drawings the same
reference letters are used to mark the same or like parts wherever they are repeated.
My improved fastening device is shown as adapted for the common arrangement of
chair having the inner surface of the key jaw, A, horizontally parallel with the rail, B,
but it can be easily modified to suit a chair with the inner surface of the key jaw
horizontally inclined to the rail. The key or main part, C, is by preference a hollow
casting of ordinary or malleable iron and is made with a slight taper longitudinally on
the side nearer the rail, B, whilst between it and the rail there is placed a bolster or
plate, D, made with a taper equal to that of the key, C, but which is reversed when
the parts are in position. The bolster, D, is made with horns; E, which projecting
down on each side of the bottom of the chair jaw prevent the bolster from moving
along the rail, B, when the key, C, is being driven into position. Between the
bolster, D, and the web of the rail; B, a piece, F, of sheet rubber or other suitable
compressible (and by preference elastic) material is interposed to prevent rigidity and
provide a slight amount of elasticity; and the bolster, D, itself being immovable

page_text: longitudinally prevents the rubber sheet, F, from being rubbed along the rail when
driving in the key, C. A small T-shaped locker, H, is provided for preventing the
key, from creeping out of its place after it has been driven into position. This
locker, H, is entered into a slot, J, formed for it in the top of the key, O, before the
key is placed in the chair; and after the key has been driven in the stem part of the
locker, H, is turned down into the position in which it is shown in figures, 1, and 2,
an oblique or curved slot, K, being formed to allow, of this from the top slot J, a
certain distance down the outer side of the key. When the locker, H, is turned down
in this way it prevents the withdrawal of the key, C, by bearing against the side of the
chair jaw, A. The locker, H, is of such a shape, as shown, that it cannot be removed
from the key, C, when the key is in its place in the chair.
In figure, 8, a thin plate, L, is shown as interposed between the key, C, and the
chair jaw, A, and is formed with flanges to catch on each side of the jaw so as not to
be moved out of place when driving in the key, C. A piece of rubber sheet or other
suitable compressible material shown by a thick line is placed between the plate, L,
and the chair jaw, A, the purpose of introducing the compressible piece with the
plate, L, to guard it, being to impart additional elasticity.
My improved fastening device may be modified in form to suit various sections of
rail and various kinds of chairs; and the key or main part, C, may be made of any
suitable metal or alloy or other suitable and durable material or composition.
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:-
The combination of forming an improved fastening device for securing railway rails
in their chairs, and consisting of a slightly tapered key, a similarly but reversely
tapered bolster or plate, a piece of rubber or other suitable compressible material
interposed between the bolster and the rail, and a locker for preventing the withdrawal
of the key, these parts being constructed arranged and operating substantially as
hereinbefore described and as shown in the accompanying drawings.
EDMUND HUNT,
Applicant's Agent.