Year: 1887

page_text: Date of Application, 20th Apr., 1887
Complete Left, 20th Jan., 1888
Complete Accepted, 24th Feb., 1888
Inspector, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to prevent the chair keys of permanent ways from
working loose.
In carrying the invention into effect, I make one of the jaws separate from the
rest of the chair, and which loose jaw bears against the web of the rail when the way
is laid.
The separate jaw has an extension formed upon its lower part which rests in the
foot of the chair, the latter having a wide groove formed therein to receive said
lower part.
In the adjacent side faces of the said extension and the foot of the chair I form a
circular groove part of the groove being formed in the extension and the remainder
in the chair foot.
This groove is arc shaped in plan.
The keys to be driven into the groove may be either wood or metal. If of the
latter material, I make them of an open tubular section, one edge of the tube over-
lapping the other.
I wish to point out that as the key to be used in my invention may be a wooden
one, the groove above mentioned may be so shaped in cross section that an ordinary
treuail may be used as one.
Dated this anal
T
1901
PHILLIPS & LEIGH,
Agents for the Applicant.

page_text: An Improved Fastening for Permanent way.
I, HENRY JOHN MARSHALL, of Linslade, in the County of Buckingham, Traffic
Inspector, 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 :-
The object of my invention is to prevent the chair keys of permanent way from
working loose; and the resultant modified construction of the chair particularly
adapts it for use as a joint chair.
In order that my invention, and the means by which the same is to be carried into
practical effect, may be thoroughly understood, I will now describe it in detail, referring
in so doing to the accompanying drawings which are to be taken as part of this
specification and read therewith.
Fig. 1 is a front elevation of an intermediate chair constructed according to my
invention.
Fig. 2 is a plan corresponding with Fig. 1.
Fig. 3 is a front elevation of a joint-chair constructed according to my invention.
Fig. 4 is a side elevation corresponding therewith.
Fig. 5 is a plan of a wooden key; and Fig. 6 is an end elevation of a steel koy:
cither of which may he used with a chair constructed according to my invention.
Referring to Figs. 1 and 2,
A is the sleeper; B, the rail; and C, the chair-foot. The foot and two jaws, c, c²,
are formed in one piece, but the right hand, or outer, jaw c' stands at a greater distance
than usual from the inner jaw c.
I provido a separate, or loose, jaw, D, which is adapted to occupy the space between
the outer jaw, c, and the adjacent face of the rail-web, b. Both loose jaw, D, and the
stationary jaw, e, are shaped to engage sufficiently closely with the respectivo faces of
the chair-web, b, and of the bottom flange, b'.
it.
of
I form an extension, d, upon the bottom of the loose jaw, D, which extension rests
in a corresponding cavity, d', formed in the chair-foot, C, for the purpose receiving
This cavity is rather larger than the said extension in the direction of the length
of the chair, in order that the jaw may be forced up into the desired position when
the key (described further on) is driven into its seat. The loose jaw is of a sufficient
height to bear against the under face of the head, 6, of the rail.
I do not confine myself to always forming the above described extension, d, and
cavity, d, upon the underside of the jaw, 1, and in the chair-foot, C, respectively
inasmuch as the bottom of the said loose jaw may rest upon the plane surface of the
respective portion of the chair-foot.
In the adjacent faces of the loose jaw, D, and the stationary jaw, c¹, 1 form a key-
seat which is, preferably, circular in cross-section. Half of the seat is in the
loose-jaw, and half in the stationary one. Instead of making the chair-seat
parallel, in plan, with the rail; I make it are-shaped, in plan, as shewn by the dotted
lines in Figs. 1 and 2. This seat is open at the top as shewn in Fig. 1.
The key, E, illustrated in the last mentioned figures in the seat is an ordinary
wooden one, and I consider this material preferable. It is straight, and cylindrical,
or nearly, so in cross-section, as illustrated in Fig. 5, and is of a driving fit for the
key-way. Either the nose of the key may be tapered, or bevelled; or the mouth
of the seat opened to facilitate the entrance of the key; or the seat may be adapted
to receive an ordinary trenail as a key.

page_text: When the loose jaw, D, has been placed in position; and the key, E, driven home
into its seat-see Fig. 5,-the said key is compelled to follow the arc shape of its
seat; and is, besides, in close contact with the surface of the seat. Its enforced
curvature prevents its being shaken loose by the vibrations of the chair, and its
resilience keeps the loose jaw, D in close contact with the rail.. At the same time
the resistance of the key to compression forces the said jaw away from the stationary
jaw c¹ in the direction of the rail, as well as downwards towards the chair-foot C.
The key-seat is made open at the top, by cutting away the adjacent parts of the
jaws, D, and, c', where they would form the top of said seat, for the purpose of facili-
tating the dropping of the loose jaw, 1), into its seat; and also for allowing of the
condition of the fixed key being easily inspected.
Instead of the wooden key illustrated in Figs. 1, 2 and 5; a metal one, E¹, as
illustrated in Figs. 3, 4 and 6, may be used.
A chair constructed according to my invention is peculiarly adapted to be used as
a joint-chair. Such an adaptation is,illustrated in Figs. 3 and 4, wherein parts which
appear in the either of the two previous figures are marked with the same reference
letter.
The distance between the two stationary jaws c, c¹, is greater in a joint-chair than
in an ordinary chair, for the purpose of making room for the fish plates, e, e. The
widths of these jaws, c, D, is regulated by the distance between the centre fish-plate
bolts, ff, as shewn in Fig. 4, the latter being thereby permanently locked. And the
said jaws may be so extended in the line of the web of the rail in both directions, as
to lock the outer bolts, f¹, f, of the fish-plates in a corresponding manner. The
said outer bolts, f, may, in consideration of the permanent support given to the
rail-joint by the chair, and of the security of the centre bolts,,, be dispensed with
altogether.
The loose jaw, D, when adapted for use with a joint-chair is not carried up to the
head of the rail.
Chairs made according to my invention may be adapted to be keyed on either side
of the rail.
It is obvious that with my improved joint-chair, the fish-plates will not require to
be carried under the rail; and may be shorter than usual, thereby effecting a con-
siderable economy.
The keys I make use of are also of a comparatively small diameter; and, therefore,
cheaper to produce than larger koys.
I would have it understood that I may use a bent key with a straight key-seat.
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
1 claim is
1. The combination in a chair for permanent way, of stationary jaw; loose jaw
adapted to occupy the space between said jaw and the rail; a key-seat formed in the
adjoining faces of the said jaws; and a bent key adapted to be driven into said seat;
substantially as described with reference to the accompanying drawings.
2. The combination in a chair for permanent way, of stationary jaw; loose jaw;
key-seat; and key adapted to be driven thereinto, the key-seat being curved in plan
and the key straight, or vice versa, substantially as described with reference to the
accompanying drawings.
1
T
1000