Improvements in Latch Locks or Latch Bolts.
Year: 1893

page_text: Date of Application, 5th July, 1893
Complete Specification Left, 28th Feb., 1894-Accepted, 31st Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Latch Locks or Latch Bolts.
I, ROBERT TAYLOR, of 123 Arlington Street, New North Road, Islington, in
the County of Middlesex, Locksmith, do hereby declare the nature of this invention
to be as follows: :-
The invention has for its object improvements in latch locks or latch bolts
whereby the bevel of the spring bolt is readily reversible so as to enable the lock or
bolt to be used either as a right or a left hand lock or bolt.
For this purpose I construct the tail end of the spring bolt symmetrical with its
centre line, and I form it with a shoulder or projection on both its upper and lower
side for the crank, player or follower, to act against.
The latch bolt, when in position, is correctly guided in the case by the crank,
player or follower, acting on the upper side thereof, and by a bearing spring,
removable screwed or other pin or guide or hinged guide, acting against its
underside.
When using a bottom bearing spring I place an inclined guide above the spring
bolt so that by simply pushing the latter into its case it shall be guided by such
inclined guide, in combination with the bottom bearing spring, to its correct position,
whilst when using either a removable bottom bearing pin or guide or a bottom
bearing spring, I form an L shaped slot or, opening in the lock case to enable the
tail end of the spring bolt, in the former case, to be readily placed in its correct
position against the crank, player or follower, and, in the latter case, to be freed
therefrom by means of a bradawl or like instrument acting in a hole or against a
projection of the spring bolt. When using a hinged bottom guide I form an
opening in the case to enable such hinged guide to be turned outwards away from
the underside of the spring bolt; I also form a further opening or an extension of
the opening in the case, so that by a suitable instrument acting in a hole or
projection of the spring bolt, the latter can be removed from or placed in correct
position in relation to the crank, player or follower.
By the above arrangements the bevel of the latch bolt can be reversed without
opening the lock case, whilst, when the lock is fixed in position, the latch bolt
cannot be tampered with.
FAL
T..1.. 1002
COMPLETE SPECIFICATION.
Improvements in Latch Locks or Latch Bolts.
I, ROBERT TAYLOR, of 123 Arlington Street, New North Road, Islington, in
the County of Middlesex, Locksmith, 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:-
The invention has for its object improvements in latch locks or latch bolts

page_text: whereby the bevel of the spring bolt is readily reversible so as to enable the lock or
bolt to be used as a right or left hand lock or bolt, whilst when the lock or bolt is
fixed in position, the latch bolt cannot be tampered with.
My invention is illustrated in the accompanying drawings, in which :-
Figure 1 is a front view of a latch leek with part of the cap plate broken away
showing one method of carrying my invention into effect applied thereto.
Figure 2 is a front view of the cap plate separately.
Figure 3 is a front view of a latch lock with the cap plate removed showing other
modifications of my invention.
Figuse 4 is a front view of the latch lock shown at Figure 3 with the cap plate
partly broken away and showing parts in a different position.
Figure 5 is a face view of the cap plate used with the arrangement shown at
Figures 3 and 4.
Figure 6 is a front view and Figure 7 is a plan of the latch used in connection
with all the arrangements shown.
Figure 8 is an end view, Figure 9, is a front view, Figure 10 is a plan and
Figure 11 is an underside view of a latch support used in connection with an
arrangement shown at Figures 3, 4 and 5.
In all the figures like parts are indicated by similar letters of reference.
In carrying my invention into effect I construct the tail end a' of the spring
bolt a symmetrical with a line passing longitudinally through the centre of said bolt,
and I form it with a shoulder or projection a² on both its upper and lower side for
the crank or player bor it may be the follower to act against.
The latch bolt, when in position within the case c, is correctly guided by the crank
or player b or follower acting on the upper side of its stem a³ and by a bottom
bearing spring d as shown at Figure 1, or by a removable screwed pin or guide as
shown by a dotted circle e in Figure 3 or by other form of removable guide, or by a
hinged bottom guide f as shown at Figures 3, 4, 8, 9, 10, 11.
When using a bottom bearing spring d I place an inclined guide g above the
spring bolt a so that by simply pushing the latter into its case, it shall be guided
by such inclined guide g in combination with the bottom bearing spring d to its
correct position, and in such arrangement I form an L shaped opening in the
cap plate of the lock case, see Figure 2, to enable the tail end a' of the spring
bolt a to be freed from the crank or player bor from the follower by means of a
bradawl or like instrument passed through the shaped opening c² and acting in a
hole a or it may be against a projection of the spring bolt a.
The shaped opening c is also used in connection with the arrangement having
a removable bottom bearing pin or guide e to enable the spring bolt a to be readily
placed in position against the crank or player or follower and to be removed
therefrom.
When using a hinged bottom guide for the spring bolt a I form an opening e³
in the cap plate c¹ of the case to enable such hinged guide f to be turned outwards
away from the underside of the spring bolt a by the insertion of a bradawl or like
instrument into the recess f'in the underside of the hinged guide f, and I also form
an extension to the opening in the cap plate, so that by a bradawl or like
instrument acting in a hole a' or against a projection of the spring bolt a, the latter
can be removed from or placed in correct position in relation to the crank or
player bor follower.
When in position to guide the spring bolt a the hinged guide fis flush with the
face of the cap plate c, but when drawn from under the spring bolt a the guide f
projects beyond the case and, in order to enable the tail end of the spring bolt a, in
the withdrawal of the latter, to pass freely over the stem of the guide f, I bevel
the back edge of the stem as indicated at Figure 8.
2
By the above arrangements the bevel of the latch bolt a can be reversed without
opening the lock case, whilst when the lock is fixed in position the latch bolt
cannot be tampered with.

page_text: 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. In latch locks and latch bolts, the combination of a spring bolt such as a,
means for guiding the same when in its working position, and means for enabling it
to be readily reversed, placed in, and removed from, its working position, but
which is secured against being tampered with when the latch lock or latch bolt
is fixed in position, substantially as herein shown and described.
2. In latch locks and latch bolts, the combination of a spring bolt such as a,.
bottom spring guide such as d, upper inclined guide such as 9 and an opening
such as in the cap plate of the lock case, substantially as herein shown and
described and for the purpose stated.
3. In latch locks and latch bolts, the combination of a spring bolt such as a,.
removable bottom guide such as e, and an opening such as c² in the cap plate
of the lock case, substantially as herein shown and described and for the purpose
stated.
4. In latch locks and latch bolts, the combination of a spring bolt such as a,
hinged bottom guide such as f and an opening such as cc in the cap plate of
the lock case, substantially as herein shown and described and for the purpose
stated.
Dated February 28th 1894.
ROBERT TAYLOR,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.