Improvements in Locks or Fastenings for Railway Carriage and other Doors.
Year: 1888

page_text: Date of Application, 21st Aug., 1888
Complete Specification Lelt, 8th May. 1889-Accepted. 22nd June, 1889
PROVISIONAL SPECIFICATION.
Improvements in Locks or Fastenings for Railway Carriage and
other Doors.
I EMIL HOLLANDERS of 3 Queen's Buildings Osborne Road Southsea Hampshire
Chronometer and Watchmaker do hereby declare the nature of this invention to be as
follows:-
The door will be securely fastened by means of a bolt and catch. The catch is in
the nature or shape of a Rack having two or more teeth. When the door is pushed
home the bolt in the lock will engage in the teeth of the rack-catch and will securely
fasten the door in either of the teeth of the said rack catch.
The lock and catch may be applied on any part of the door.
COMPLETE SPECIFICATION.
Improvements in Locks or Fastenings for Railway Carriage and
other Doors.
1, EMIL HOLLANDERS of 3 Queens Buildings, Osborne Road, Southsea Hampshire
Chronometer and Watchmaker 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 improvements in fastenings for the doors of railway
carriages and other doors.
Accidents now happen from time to time from the doors of railway carriages being
insecurely closed and afterwards flying open, thereby allowing persons to fall out;
or in other cases the doors to come into collision with the piers of bridges or other
obstructions.
To avoid such accidents I provide two recesses in the striking plate to receive the
nose of the latch bolt. The bolt enters one of these recesses when the door is fully
shut, the other recess serves to receive the bolt when the door not being securely
shut, commences to open. In the annexed drawings Figure 1 is a horizontal section
representing the door a and door frame b. In this figure the door is shown securely
shut, the nose of the latch bolt c is in the inner recess of the striking plate d which
is fixed to the door frame.
Figure 2 is a similar view but here the door is shown insecurely closed, the nose
of the latch bolt has not entered the inner recess d¹ of the striking plate d. The door
when in this position will yield if pressed outwards but the door will not completely
open because the latch bolt will be caught by the second or outer recess d2 of the
striking plate d.
Figure 3 is a view similar to the preceding but with the door retained by the bolt
which now is in the outer recess of the striking plate.
Figure 4 is an elevation of the striking plate d together with part of the door
frame.
It is obvious that the striking plate in place of being on the door frame may be
upon the door, the latch in this case being upon the door frame.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed 1 declare that what
I claim is :-
A door fastening substantially as described in which the striking plate is provided
with a second or outer recess which will retain the latch bolt when the door, having
been imperfectly closed, would otherwise fly open.
.
Dated this Fourth day of May 1889.
EMIL HOLLANDERS.