Improvements in Handles for the Doors of Railway Carriages, and Mechanism therewith connected.
Year: 1896

page_text: Date of Application, 20th June, 1896
Complete Specification Left, 20th Mar., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in Handles for the Doors of Railway Carriages, and
Mechanism therewith connected.
I, LLEWELLYN WYNN WILLIAMS, Bachelor of Science, Railway Appliances
Works, Cathcart, Renfrewshire, Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object the means for opening railway carriage doors
from the inside of the carriage. For this purpose the spindle which passes through
the bolt or latch in the lock and to whose outer end is fixed the handle on the
outside of the door, is produced through the door to the inside of the carriage. To
the inner end of the spindle I will fix or secure an eccentric, or lever, or, toothed
pinion or crescent, or chain, which so engages with the one end of a lever which is
suitably fulcrumed at or near its centre and whose other end serves as a handle,
that on raising the handle end of this lever, the eccentric or lever, or toothed
pinion or crescent, or chain, causes the spindle to revolve and thus operates the
bolt in the lock and allows the door to open.
In another arrangement I put a link to connect the eccentric or lever to the one
end of the inside handle lever. The exposed mechanism excepting the inside
handle can be protected by a suitable metal covering or casing.
Dated this Nineteenth day of June 1896.
LLEWELLYN WYNN WILLIAMS.
Improvements in Handles for the Doors of Railway Carriages, and
Mechanism therewith connected.
I, LLEWELLYN WYNN WILLIAMS, Bachelor of Science, Railway Appliances
Works, Cathcart, Renfrewshire, 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 :-
This invention has for its object the means for opening railway carriage doors
from the inside of the carriage.
I append hereto one sheet of explanatory drawings in which the same reference
letters are used to denote the same or similar parts in the different figures.
Figure 1 is a front elevation, Figure 2 a vertical section and Figure 3 a plan
view of an arrangement in which the inside handle A turns on the spindle A' and
is shackled at A to one end of a chain C which passes round a collar D which
turns on a stud D'. At its other end C' the chain C is shackled to an arm C"
which is fixed to the spindle A.
In Figure 4 the inside handle A is fulcrummed at a aud jointed at A" to a

page_text: link C' which has a slotted hole in which a pin.fixed at C to the arm C is allowed
to travel. The arm C is fixed to the spindle A¹.
Figure 5 shows the inside handle jointed at A" to one end of a chain C which is
attached at C¹ to a pulley C" which is fixed to spindle A'.
Figure 6 shows the inside bandle A fulcrummed at a and with its inner end A"
tooth shaped in gear with the tooth shaped.end C' of arm. C" which is fixed to
spindle A¹..
As shown in Figures. 1, 2, and 3, when the handle A is lifted, the end A" of the
chain C travels upwards, and the chain C by travelling round the collar D pulls
the end C¹ of. the arm.C. which then revolves. in the opposite. direction to the
inside handle. The arm C" being fixed to the spindle A¹ causes it to turn and
unlock the door which can then be opened. In the arrangement shown in Figure 4
the raising of the handle A depresses the end A" and the slotted link C which
revolves the arm C" and the spindle A thus disengaging. the bolt of the lock.
As shown in Figure 5 the spindle A is turned by lifting the handle A which
depresses its end A" and pulls the chain C which is fastened at C¹ to the
pulley C which is fixed to spindle A. In the arrangement given in Figure 6 the
tooth A of the handle A and the tooth C¹ of the arm Care in gear and con-
sequently when the handle A is lifted the arm C" and the spindle are turned in the
opposite direction.
In all these arrangements when the door is unlocked by turning the handle on
the outside of the door, and when the door is slammed-to, the inside handle remains
stationary.
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 arrangement and combination of appliances for operating the locks of
railway carriages, substantially as herein. described in reference to and shown in
the accompanying drawings.
Dated this Nineteenth day of March 1897
LLEWELLYN WYNN WILLIAMS.