Improvements in Lock Furniture.
Year: 1893

page_text: Date of Application, 5th Apr., 1893-Accepted, 13th May, 1893
COMPLETE SPECIFICATION.
Improvements in Lock Furniture.
I, EDWIN ROBERT WETHERED, of 100, Herbert Road, Woolwich, in the
County of Kent, Lieutenant Colonel, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
My invention relates to improvements in lock furniture, whereby a latch-lock
such as a night-latch may be operated from either side of a door by means of a
handle in the same manner as an ordinary lock and whereby the handle on the
outside of the door may be disengaged from the lock or rendered inoperative so
that the latter can then only be opened by the key.
According to my invention I arrange the spindle connecting the two handles
in such a manner that it can be moved longitudinally so as to disengage it from one
of the said handles or from the follower of the lock or that it can be held against
rotation.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings in which :-
Figure 1 is an elevation partly in transverse section of a latch-lock having my
improved furniture applied thereto; and,
Figure 2 is a view of a detail thereof.
Figures 3 and 4 are views similar to Figures 1 and 2 respectively illustrating a
modification of my invention.
Figure 5 is a view, similar to Figure 1, illustrating another modification.
Figure 6 is a sectional view of a handle and a portion of a spindle showing a
further modification; and
Figures 7 and 8 are a sectional elevation and a section on the line 8, 8 Figure 7
respectively illustrating another modification.
Similar letters of reference indicate corresponding parts in the several figures.
is the casing of a latch-lock of any suitable construction.
bis the wood
of the door into which the lock is mortised, and c is the lock bolt which is adapted
to be operated either by a key or by means of the handles or knobs through
the medium of the follower d.
e, e' are the handles or knobs of the lock furniture on the outside and inside of
the door respectively which knobs are secured to the face of the door by roses f, f
of any suitable construction, and g is the spindle connecting the said handles,
the said spindle being advantageously square in section and engaging with a hole
of similar form in the knob e'. As shown in Figure 1 the said spindle is
adapted to slide relatively with the handles and at one end projects through the
handle e¹ on the inner side of the door the projecting end being provided with a
knob or button h. The spindle g is adapted to be engaged with and disengaged
from a socket i forming an extension of the outside handle e the said socket i
having formed in it a series of notches j, j with which the corners or angles of the
spindle
9 can
engage. With this arrangement it will be understood that when the
spindle g passes into the socket i, as shown in full lines in Figure 1, the lock can
be operated from either side of the door by the handles; when, however, the
spindle g is drawn by operating the knob h into the position shown in dotted lines
in Figure 1, that is to say, out of engagement with the socket i of the handle e then
the said lock can only be operated by the handle e' on the inside of the door, the
handle e on the outside being free to turn without operating the spindle g. g' is a
flat spring upon the spindle g for producing a certain amount of friction between
the said spindle and the handle e'.
In the modification of my invention shown in Figures 3 and 4 the spindle is in

page_text: connection with both the handles, and in order to prevent the lock: from being
operated from the outside, I place between the door and the rose f of the inside
handle, a plate k shown in Figure 4, and provided with a square hole k'. The
spindle g at that part which is immediately, adjacent to the plate kis made cylin-
drical so that it will freely turn in the hole ; when, however, the spindle is in
the position shown by the dotted lines in Figure 3 the square portion of the said
spindle is in the hole k whereby it follows that the said spindle will be held against
rotation..
In the modification of my invention shown in Figure 5, the spindle g is repre-
sented as being made cylindrical at one part / so that when the said spindle is
moved from the position shown in full lines to that represented in dotted lines, the
said cylindrical part will be drawn into the follower d so that the rotation of the
spindle will not operate the lock.
In Figures 1, 3 and 5 I have represented the knob h as being firmly attached to
the spindle g. In some cases however I arrange the knob has a nut with which a
screw thread on one end of the spindle g engages, as shown in Figure 6. The
nut his mounted in the handle e' so that it can be rotated but cannot be moved
longitudinally, the said rotation enabling the longitudinal movement of the spindle g
to be effected.
The modification of my invention shown in Figures 7 and 8 is somewhat similar
to that shown in Figure 3, that is to say, the spindle g is adapted to be held
against rotation. In the said modification, however, the spindle is held by means
of a slide sliding in a suitable recess in the rose f (or in the case of a rim lock
upon the lock casing) and guided by a pin the said slide having on its inner end a
notch m designed to fit the spindle g. When the said slide is in the position shown
in Figures 7 and 8 the spindle g is free to be rotated; wheu, however, the slide is
moved so that the notch m engages with the said spindle the latter will be held
against rotation. Instead of the slide I may use a pin which passes through
the rose into a hole in the spindle.
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 :
―
1. The improvements in lock furniture consisting in the provision of means
whereby the lock may be operated by a handle or by a key from the outside as
desired, substantially as described.
2. Lock furniture the spindle between the handles of which is adapted to be
moved to disengage it from one of the said handles, substantially as described with
reference to Figures 1 and 2 of the accompanying drawings.
3. In lock furniture the employment of a sliding spindle adapted to be moved
longitudinally and to be engaged with and disengaged from a plate secured on the
door, substantially as described with reference to Figures 3 and 4 of the accom-
panying drawings.
4. In lock furniture a sliding spindle adapted to be engaged with or disengaged
from the follower of the lock, substantially as described with reference to Figure 5
of the accompanying drawings.
5. In lock furniture provided with a longitudinally moving spindle, the arrange-
ment of a nut engaging with screw-threads upon the said spindle, substantially as
described with reference to Figure 6 of the accompanying drawings.
6. The modification of my invention wherein the spindle is adapted to be locked
by means of a notched sliding plate (or by a pin) substantially as described with
reference to Figures 7 and 8 of the accompanying drawings.
Dated the 5th day of April 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.