Year: 1886

page_text: We VINCENT NEPOS of 105 Lower Circular Road Calcutta Engineer, and JOHN
EDWARDS of Narcol dunga 24 Perganahs Loco-Foreman, E.B.S. Railway Bengal
India do hereby declare the nature of our invention to be as follows:-
Our invention has for its object to avoid all wear of the spindles or rods of slide
valves, and to connect the latter to the former in such a manner that there shall
be no screwed or keyed fastenings within the valve chest, thus obviating the loss
time and labor attendant on the necessity of stopping the engines and opening
the valve chests in order to examine and adjust the screwed or keyed fastenings
now employed.
For this purpose the valve spindle passes through the buckle of the slide valve
as heretofore, but instead of having screwed or keyed connections thereto, the inner
part of the spindle has a fixed collar against which the slide buckle bears with its
back face while within and beyond the buckle the spindle is made to pass between
two tubes, one of which butts against the two inner faces of the buckle while the
other butts with a collar on its inner end against the front outer face of the buckle
and passing with the spindle through the stuffing box of the valve casing, has its
outer end secured by means of a nut with locknut screwed on the front end of the
valve spindle, just behind the head connecting it to the valve gear. Thus the
spindle is preserved from all wear this being confined to the tubular enclosure
thereof, and the slide valve is held securely between the abutting ends of the tubes
and the collars on the spindle, the only screwed fastening being that on the outside
end of the one tube, which is always open to inspection, and which can be rendered
perfectly secure by the locknut.
ABEL & IMRAY,
Agents for the Applicants.

page_text: We, VINCENT NEPOS of 105 Lower Circular Road, Culcutta Engineer, and JOHN
EDWARDS of Narcoldunga 24 Perganabs, Loco-Foreman E.B.S. Railway, Bengal
India 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:―
Our invention has for its object to avoid all wear of the spindles or rods of slide
valves, and to connect the latter to the former in such a manner that there shall
be no screw or key fastenings within the valve chest, thus obviating the loss of
time and labour attendant on the necessity of stopping the engines and opening
the valve chests in order to examine and adjust the screw or key fastenings that
are usually adopted.
For this purpose we connect the valve rod or spindle to the slide valve as we
will describe referring to the accompanying drawings.
Fig. 1 is a plan of the connected spindle and buckle of the slide valve, Fig. 2
shews the spindle separately, Figs. 3 and 4 are longitudinal sections of the tubes, G
and C, Fig. 5 is an end view of the buckle, and Fig. 6 is a back view of the nut
which secures the tube G. The spindle A B has solid on it a collar D, and
enlarged parts M on which fit the tubes G and C. The tube C fits within the
buckle, and the tube G has solid on it a collar E which fits up against the
buckle, a part of the tube projecting beyond the collar E fitting into the recessed
hole N in the face of the buckle. The other or front end of the tube G fits into
a recessed hole in the nut H which is screwed on to the screwed part L of the
spindle, and is prevented from becoming loose by a lock-nut I.
By this arrangement the buckle is held between the two collars D and E subject
to the tightening of the nut H, whilst the tube C within the buckle prevents it
from being deformed by the pressure resulting from the tightening of the nut.
This nut Hand its lock nut I being outside the valve chest are always accessible,
and as the tube G works in the stuffing box, there is no wear on the spindle itself
but on the tube G which can be renewed when necessary at moderate cost.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
For attaching a slide valve to its spindle in combination with the buckle K and
the spindle A. B having a solid collar D, the tubes C and G and nuts H and I,
constructed and arranged substantially as and for the purposes herein set forth.
Dated this 10th dox of Santember 1886