Improvements in Inside Handles for the Locks or Fastenings of Carriage Doors.
Year: 1894

page_text: Date of Application, 6th June, 1894
Complete Specification Left, 5th Mar., 1895-Accepted, 6th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Inside Handles for the Locks or Fastenings of
Carriage Doors.
I, JAMES MAXWELL, of 17 King's Road, Dundee, in the County of Forfar,
North Britain, Maker of Carriage Door Locks, do hereby declare the nature of
this invention to be as follows, that is to say:-
My said invention has for its object to provide the locks or fastenings of
carriage doors with improved inside handles free from the inconvenience of and
objections to some existing inside handles.
As the main spindle of an ordinary carriage-door lock is very near the edge
of the door an ordinary handle cannot be applied directly thereto without, in some
positions, encountering the door frame, and being inconvenient and liable to cause
accident. In carrying out my present invention, however, I place the inside handle,
which may be of any ordinary or suitable kind, at a convenient distance from
the edge of the door, and I connect it to the main spindle by any suitable
mechanism.
In one modification I fix a supplementary box or casing of small thickness ou
the inside of the door, and on the inner end of the main spindle which extends into
the box, I fix a toothed quadrant with which there gears a second toothed quadrant
arranged to be turned by the inside handle. The inside handle may be made with
a short squared spindle fitting a squared eye at the centre of the second quadrant,
or it may be otherwise connected thereto. With this arrangement the inside
handle requires to be turned over towards the door edge for the purpose of opening
the door; but if it is considered desirable that the inside handle should be turned
the other way for opening, a pinion may be placed between the two toothed
quadrants and gearing with them both..
In another modification short levers may be fixed on the main spindle and on
that of the inside handle and be connected by a chain or cord passing round a guide
pulley.
Dated this Fifth day of June 1894.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Inside Handles for the Locks or Fastenings of
Carriage Doors.
I, JAMES MAXWELL, of 17, King's Road, Dundee, in the County of Forfar,
North Britain, Maker of Carriage Door Locks, 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 provide the locks or fastenings of carriage
doors with improved inside handles, free from the inconvenience of and objections
to some existing inside bandles.

page_text: As the main spindle of an ordinary carriage-door lock is very near the edge of
the door, an ordinary handle cannot be applied directly thereto, without, in some
positions, encountering the door frame, and being inconvenient and liable to cause
accident. In carrying out my present invention, however, I place the inside handle,
which may be of any ordinary or suitable kind, at a convenient distance from
the edge of the door, and I connect it to the main spindle by any suitable
mechanism.
Examples of mechanism suitable for the purposes of my invention are shown on
an accompanying sheet of explanatory drawings, and are hereinafter describe.1.
Figure, 1, of the drawings is a horizontal section of part of a railway-carriage
door and door frame, with a common lock supplemented with my improved
arrangement of inside handle.
Figure, 2, is an elevation of one modification of mechanism for connecting the
inside handle with the main lock spindle, the casing being supposed removed.
Figure, 3, is a horizontal section corresponding to Figure, 2; and
Figures, 4, and 5, are elevations of other modifications of the connecting
mechanism.
Figure, 1, is drawn to a somewhat smaller scale than that of the other figures.
In these drawings the same reference letters are used to mark the same or like
parts wherever they are repeated.
In the modification shown in Figures, 1, 2, and 3, I fix on the inside of the door
a supplementary box or casing of small thickness consisting of an outer flanged
plate, A, and an inner plate, B, on the inside of the door, and on the inner end of
the main spindle, C, I fix by its boss, D, a toothed quadrant, E, with which there
gears a second toothed quadrant, F, arranged to be turned by the inside handle, G.
The inside handle, G, is made with a short squared spindle fitting a squared eye
in the centre or boss, H, of the quadrant, F; or it may be otherwise connected
thereto. With this arrangement the inside handle, G, requires to be turned over
towards the door edge, that is in the direction of the arrow in Figure, 2, in order
to open the door.
If it is considered desirable that the inside handle, G, should be turned the other
way, that is in the direction of the arrows in Figures, 4, and 5, a pinion, J,
Figure, 4, may be placed between the two toothed quadrants, E, F, and gearing
with them both.
In another modification shown in Figure, 5, the main spindle and the spindle of
the inside handle, have fixed on them bosses, K, L, each made with two short
levers, M, N, P, Q, and the two pairs of levers are connected by links, R, S, the
arrangement constituting a well known parallel motion which is equivalent to the
arrangement shown in Figure, 4.
In the arrangements hereinbefore described the handle assumes the vertical
position when the door is open and the horizontal when shut, that is, the same
positions as the outside handles. An index with the word "open" may be attached
to the case if thought desirable.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The placing of an inside handle for a lock or fastening of a carriage door, at a
convenient distance from the inside edge of the door and connecting it to the main
spindle of the lock or fastening substantially in the manner and for the purposes
hereinbefore described.
TA
EDMUND HUNT,
Applicant's Agent.