An Improved Bolt for the Secure Fastening of Doors, Cupboards, and the like.
Year: 1899

page_text: Date of Application, 17th Mar., 1899-Accepted, 17th Feb., 1900
COMPLETE SPECIFICATION.
An Improved Bolt for the Secure Fastening of Doors, Cupboards,
and the like.
I, ALBERT NORTHOVER, Agent, of Berrymead Lodge, Winchester Street, in
the Parish of Acton, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be parti-
cularly described and ascertained in and by the following statement:—
This invention relates to the application, of improvement of bolts for the
secure fastening, of doors, cupboards, and the like, the object being to produce
greater strength and neatness, incidental to the fastenings usually employed.
greater security to life and property resulting.
In order that my said invention may be clearly understood, I will now proceed
to describe the same, as to the accompanying drawings wherein―
Figure One A is a brass socket to be let into the edge of the door, to hold
and for the bolt to work in-
Figure 2 is a steel bolt to work within the socket Fig. 1-the spring E at
the end of the bolt is to make the bolt self bolting-
Figure 3 is a knob or handle to unbolt the door, (withdraw the bolt,) the
spring inside the shank J is to work the catch to hold the bolt within the
door when the door is not required to be bolted, by placing the catch F
through the slot i Fig. 4.
Figure 4 is a brass plate with a slot i through which the shank or handle
passes in regulating the bolt.
Fig. 5, is a brass socket two inches long to be fixed in the door frame to
receive, and to hold the bolt, when the door is bolted.
Fig. 6 is the bolt complete, as fixed in the door ready for bolting, and, is
made up and consist of Figurs 1, 2, 3, & 4.
Figure is the same as Figure 6, showing the door bolted the bolt being
shot into the socket Fig. 5 in the door frame,
Figure 8 is a brass plate simular to Figure 4 but in addition has a lock &
key, to make the bolt a lock bolt, by placing a steel pin through a hole P
in the socket A, into a hole R in the bolt 1) as shown in Fig. 9.
Fig. 9 is a view of the bolt lying in the door showing how it can be made a
lock bolt, the door being cut harizontal, immediately over it, the bolt being
held by the pin, refured to in Fig. 8, passing through the socket hole Pinto
the sliding hole or slot O, in the bolt 1), this slot or hole is half an inch in
length, just long enough for the bolt D to pass forwards and backwards to allow
the door to catch, when the door is closed. To open the door the catch is
pushed from either side, by pressing back the knob or handle, attached to the
shank, or bar, running through the bolt D. When the door is required to be
bolted a key M Fig. S, is used to withdraw the pin, from the bolt D, back
thorough the socket hole P when the spring E will force the bolt D forword,
two inches in the door frame the shank of the knob or handle passing thorough
the slot G and R will appear immediately over P when by again turning the
key M, the same pin will be placed thorough P into R, and the bolt is locked

page_text: the bolt can be locked or unlocked from either side when the door is required to
be unbolted, the key M is used, the bolt pushed back by the knob or handle
from either side of the door, & by again turning the key M, the pin is placed
thorough P into O, and the door is again at: catch.
Fig. 10 is similar to Fig. 9, but working only from the inside, and instead of
a lock & key, the bolt is worked by the spring, & catch F Fig. 3.
The bolt being shot by simply pressing one finger, on L as shown in Figure 6
and Fig. the bolt D is drawn, back by the knob or handle Fig. 3, this bolt
to be used as a inside bolt, and for cupboards & the like.
Fig. 11, is a view of the bolt and socket lying in the door the door being cut
across the bolt D, and socket A11-
7.1
Figurs 12, and 13, are iron plates provided with holes N for the bolt to pass
through, to be screwed to the edge of the door over the sockets plates to be used
only where extra strength is required.
.
Figure 14 is the door closed & bolted showing the neetness, the strong bolt D
lying invisible in the sockets 4 inches in the door socket & 2 inches in the jamb
or frame socket, the, door is absolutely unforceable, the middle bolt to work from
either side, as shown in the drawings Fig. 9, and the top bolt is a catch bolt
to work from one side only as represented & shown in the drawings.
In carrying out my invention I let into the door a socket A Fig. 1 Sheet 1
made of brass or other metal by boring into the edge of the door a round hole
8 inches deep & three quarters of an inch in diameter having inserted the socket
Fig. 1-I secure the socket in the hole by screws, through the plate B, B. This
plate is 4 inches long two inches on each side of the socket hole C, and about
one inch and a half in width, I then place into the socket a smooth steel bolt, I):
Fig. 2, the bolt is six inches long and just large enough to work easly within,
the bolt has attached to it a steel wire spring E this spring is to bolt and to hold
the bolt when bolted, a catch F Fig. 3 is employed to hold the bolt in the
door socket when the door is not required to be bolted, the socket has a slot G,
Fig. 1 two inches long, commencing one inch from the door edge, running towards
the spring end of the bolt, a slot H is cut in the side of the door immediately
over the socket slot. I then screw over these slots a brass plate Fig. 4 haying
a corresponding slot thorough these slots I pass the shank of the knob or handle J,
Fig. 3, and screw it into the middle of the bolt, which has been provided with
a hole to receive it K Fig. 2 by this handle the bolt is worked or drawn, a 3
catch F is used here to hold the bolt in the door socket when the door is not
required to be bolted, I then bore a similar hole in the door frame, precisely
opposite and place into this hole a socket as represented in the drawing Fig. 5,
this socket is the same diameter as the socket in the door, but two inches deep
and I screw it by screws through the plate B, B, the same as the socket A, is 4
secured in the door, I then close the door & the two socket holes C, C, face each
other, as appearing in the drawing Fig. 6, all that is then required to bolt the
door is to press gently on the button L when the catch F releases the bolt, and
the spring E forces the bolt forwards into the socket Fig. 5, in the door frame,
as shown in the drawing Fig. 7, and the handle L passes to the other end of 4
the brass plate Fig. 4. Thus I have the door bolted by an invisible, strong
bolt lying hidden two inches in the door frame & 4 inches in the door socket,
and being held firmly there by the spring E, behind the bolt, the door is
unforceable and all that is then to be seen is the brass plate Fig. 4, and the knob
or handle L Fig. 3, as represented & appearing in the drawing Fig. 14, Sheet 3. 5
When the door is required to be unbolted the bolt is drawn back into the door
by the knob L through the slot G in the brass plate, and is again held in the
door by the catch F Fig. 3.
The bolt can be made a lock bolt by, fixing the same way and made a secure
fastening for fastening doors from the out side, by fixing a similar brass plate 55
Fig. 8. but having a small lock and key to hold the bolt when bolted, attached to
this plate, the outside knob having a shank fixed to it passing thorough the

page_text: bolt D, and a knob screwed to it on the inside, a key M Fig. 8, is required
to unlock the bolt, before it can be withdrawn, thus I have the door locked
& bolted workable from either side, by a strong bolt in the middle of the door,
and the convenience of a small key, that can be carried in the waist coat pocket
or a lady's purse.
An outside door with a lock bolt Fig. 9 in the middle to work from either
side, and a catch bolt Fig. 10 top & botton to work only from the inside,
require no other fastening is neat, and unforceable whether fastened from the
outside or inside, again a small lever lock is less liable to be picked than an
ordinary door lock, should the house be required to be left unprotected, for
any period.
The bolt can be made any size, and where extra strength is required, an
iron plate as shown Fig. 12 running the length of the door edge, or shorter as
Fig. 13, with holes N for the bolt to pass thorough, could be screwed to the
edge of the door.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I do declare that what
I claim is:-
1st. A self bolting bolt, together with strength and neatness, incidental to
the secure fastening of dwellings, and the like substantially as described.
2. An improved bolt, suitable for inside or outside doors, cupboards and the
like, absolutely unforceable, can be worked from one or both, sides of the door,
as herein described and shown in and by the accompanying drawings.
Dated this 17th day of March 1899.
ALBERT NORTHOVER.