Improvements in Reversible Locks and Latches for Doors and Gates.
Year: 1890

page_text: Date of Application, 5th Dec., 1890
Complete Specification Left, 5th Sept., 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Reversible Locks and Latches for Doors and
Gates.
I, JABEZ BEDDOW, of 20, Lower Lichfield Street, Willenhall, Staffordshire,
Lock Maker, do hereby declare the nature of this invention to be as follows:-
This invention has reference to reversible locks and latches for doors and gates
and it consists in the herein described improved construction and arrangement of
the mechanism by which the bolt is operated and maintained in its locked and
unlocked positions respectively. By my invention the said mechanism is
considerably simplified and the cost of production of the lock or latch diminished.
In carrying out this invention the keyhole is preferably vertical and made double
its ordinary length and it has a central enlargement for the pin of the key to work
in. so that the key can be inserted in the lock with the bit below the pin whichever
side of the lock is placed uppermost.
The bolt proper may be either above or below the keyhole but the bolt
operating mechanism is placed at one side (preferably the front side) of the
keyhole so that it is immaterial which side of the lock or latch is fixed uppermost.
The bolt operating mechanism may be constructed and arranged in various ways
for instance it may consist of a vertically sliding piece connected to the bolt proper
by a bell crank lever this sliding piece being shot to and fro by the key and
furnished with an ordinary lever or tumbler or levers or tumblers to secure the
sliding piece in its highest and lowest positions respectively and the bolt proper in
its locked and unlocked positions. Or the said sliding piece may be dispensed with
and the said bell crank lever can be operated by the key direct and similarly
furnished with a lever or levers or tumbler or tumblers to secure the bell crank
lever and the bolt proper connected thereto. Or the sliding bolt proper may be
dispensed with and instead thereof that part of the bolt which projects through the
lock or latch casing may be formed on one arm of the bell crank lever which will
thus form the bolt moving in an arc of which the fulcrum of the bell crank lever
is the centre. The lever bolt thus formed may either be used with or without the
said sliding piece.
Dated this 1st day of December 1890.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Reversible Locks and Latches for Doors and
Gates.
I, JABEZ BEDDOW, of 20, Lower Lichfield Street, Willenhall, Staffordshire,
Lock Maker, 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 reference to reversible locks and latches for doors and gates
and it consists in the herein described improved construction and arrangement of
the mechanism by which the bolt is operated and maintained in its locked and
unlocked positions respectively. By my invention the said mechanism is considerably
simplified and the cost of production of the lock or latch is diminished.

page_text: I will describe my invention by referring to the accompanying sheets of drawings
on which
Figs. 1 and 2 are front elevations of a door lock embodying my invention, the
cover plate having been removed so as to shew the mechanism; the lock is repre-
sented as unlocked in Fig. 1 and locked in Fig. 2.
Fig. 3 represents the tumbler, and
จ
Fig. 5 the bolt proper and
Fig. 6 the bell crank lever of the said lock separately.
The remaining figures illustrate modifications of my invention as hereinafter
described.
The same letters and numerals indicate the same or corresponding parts in all the
figures.
In carrying out this invention the keyhole A is made vertical and double its
ordinary length and it has a central enlargement a for the pin of the key to work
in so that the key can be inserted in the lock with the bit below the pin whichever
side of the lock is placed uppermost. A keyhole arranged in this is common
in other locks and I make no claim in respect of it.
way
The bolt proper may either be above, below or on a level with the keyhole, but
according to this invention the bolt operating mechanism is placed at one side
(preferably the front side) of the keyhole so that it is immaterial which side of the
lock or latch is fixed uppermost.
The said bolt operating mechanism placed at one side of the keyhole as above
stated may be constructed and arranged in various ways for instance as in the lock
illustrated by Figs. 1, 2, 3, 4, 5 and 6, the bolt operating mechanism may consist
of a vertically sliding piece B (shewn separately by Fig. 4) connected to the bolt
proper C (Fig. 5) by a bell crank lever D (Fig. 6) the latter turning on a fulcrum
pin fixed to the lock casing E and connected at d to the hole 63 in the sliding
piece B and at d to the pin c on the bolt C, so that when the sliding piece B is
moved up (Fig. 2) the bolt C will be shot forward and when the sliding piece B is
moved down (Fig. 1) the bolt C will be withdrawn into the lock. The sliding
piece B is guided by being slotted at 61 and working on the pin e fixed to the lock
casing E, and the sliding piece B is notched at for the key to engage with when
inserted in the keyhole and turned to lock or unlock the lock. The sliding piece B
is furnished with a spring tumbler F (Fig. 3) turning at one end on the pin e³
fixed to the lock casing and formed near the other end with a notch and a pro-
jection to engage with a corresponding projection on the sliding piece B and
retain the latter in its highest (Fig. 2) and lowest (Fig. 1) positions respectively
and the bolt proper C in its locked (Fig. 2) and unlocked (Fig. 1) positions. The
tumbler F is shaped at so as to be lifted when the key is turned. It will be
evident that instead of using a single tumbler F to retain the sliding piece B for
the purposes stated two or more tumblers or an ordinary lever or levers, as used in
a so called "lever " lock, can be used with the sliding piece B without departing
from the nature of my invention.
In another arrangement of the bolt operating mechanism, as illustrated by
Figs. 7, 8, 9, 10 and 11, the sliding piece B is dispensed with and the bell crank
lever D (shewn separately by Fig. 10) is shaped and arranged to be operated by
the key direct. In this case the bolt proper C (shewn separately by Fig. 11) is
arranged below the key hole and the fulcrum pin on which the bell crank lever D
turns is above the bolt C, and the bell crank lever D has a notch with which the
bit on the key engages to move the lever D the bolt C to and fro. The bell crank
lever D is furnished with two ordinary spring levers G1 G2 turning on a fulcrum
pin fixed to the casing E these levers engaging with the projection on the bell
crank lever D when the bolt C is in its unlocked (Fig. 7) and locked (Fig. 8)
positions respectively. Or for the same purposes instead of the two levers G' Gʻ
one of them or more than two levers, or a tumbler or tumblers can be similarly
arranged to engage with the bell crank lever B.

page_text: In further modifications of my invention as shewn in Figs. 12, 13 and 14, and by
Figs. 15, 16 and 17, the sliding bolt proper C is dispensed with and instead thereof
that part of the bolt which projects through the lock or latch casing E is formed
on one arm of the bell crank lever D which thus forms the bolt moving in an arc
of which the fulcrum d' of the bell crank lever is the centre. The said part of the
lever bolt which projects through the lock casing is marked do. The lever bolt D
thus formed may either be arranged and used with the said sliding piece B as
shewn in the part of the door lock (Figs. 12 and 13 and separate view of the lever
bolt thereof Fig. 14) or the lever bolt D (Fig. 17) may be arranged and used
without the sliding piece B as shewn by Figs. 15 and 16, of which Fig. 15 shews
part of the door lock unlocked and Fig. 16 shews the same parts locked."
My invention is applied to night latches and other latches for doors and gates
similarly as hereinbefore described with reference to a door lock.
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
1. In reversible locks and latches for doors and gates and in combination with
the bolt thereof which is operated by turning the key, the employment of bolt
operating mechanism consisting of a vertically sliding piece (such as B) adapted to
be moved up or down by turning the key, a bell crank lever (such as D) trans-
mitting the motion of the said sliding piece to the said bolt, and a tumbler or lever,
or tumblers or levers for retaining the sliding piece, bell crank lever, and bolt in
either their locked or unlocked position, all arranged and operating substantially as
hereinbefore described and illustrated by Figs. 1, 2, 3, 4, 5 and 6 of the accom-
panying drawings.
2. In reversible locks and latches for doors and gates and in combination with
the bolt thereof which is operated by turning the key, the employment of bolt
operating mechanism consisting of a bell crank lever (such as D) adapted to be
moved to and fro by turning the key and connected to the said bolt so that the bolt
and bell crank lever will move together, and a tumbler or lever, or tumblers or
levers for retaining the bell crank lever and bolt in either their locked or unlocked
position all arranged and operating substantially as hereinbefore described and
illustrated by Figs. 7, 8, 9, 10 and 11 of the accompanying drawings.
3. In reversible locks and latches for doors and gates, the combination of a
vertically sliding piece (such as B) adapted to be moved up and down by turning
the key, a bell crank lever (such as D) having one arm formed as at to serve as
the bolt and the other arm connected to the vertical sliding piece so that as the
sliding piece B is moved up or down the end d' of the lever bolt will either be shot
forward or withdrawn, and a tumbler or lever or tumblers or levers for retaining the
sliding piece and lever bolt in either their locked or unlocked position, all arranged
and operating substantially as hereinbefore described and illustrated by Figs. 12, 13
and 14 of the accompanying drawings.
4. In reversible locks and latches for doors and gates, the combination of a bell
crank lever (such as D) adapted to be moved to and fro by the key and formed as
at to serve as the bolt, and a tumbler or lever or tumblers or levers for retaining
the lever bolt D in either its locked or unlocked position, all arranged and operating
substantially as hereinbefore described and illustrated by Figs. 15, 16, and 17 of
the accompanying drawings.
Dated this 4th day of September 1891.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.