AN IMPROVEMENT IN LOCKS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
We JAMES CHATER HUDSON of N° 113 Suffolk Street Birmingham in the
County of Warwick Lock Manufacturer and THOMAS BAYLEY of N° 76-Irving
Street Birmingham aforesaid Lock Maker do hereby declare the nature of the
Baid Invention for "AN IMPROVEMENT IN LOCKS' to be as follows:-
This invention is principally applicable to locks called cabinet locks that is locks
in which the top of the bolt of the lock is booked the hooked ends engaging when
the bolt is shot with eyes or staples on a staple plate the said eyes or staples
projecting through the lock plate. The bolts of locks of this kind are usually fixed
in their shot and withdrawn positions by means of a lever or tumbler pressed
down by a spring a stump on the lever or tumbler engaging with the " gating" in
the bolt so as to fix the said bolt in its shot or withdrawn position.
According to this invention the lever or tumbler is dispensed with and in place
thereof a flat or blade spring is used which is made to act both as a lover and
a spring. The said spring is fixed at one end to the lock case and has near its free
end a stump of the kind used on the ordinary lever or tumbler for engaging with
the "gating" in the sliding bolt which gating is situated in this arrangement at
the rear end of the bolt.
16
When the key is introduced into the lock and turned it first acts upon and lifts
the free end of the spring so as to disengage the stump on the said spring from the
gating" in the bolt and the further motion of the key shoots or withdraws the
bolt in the ordinary way. The bolt having been shot or withdrawn the stump on
the spring is pressed into the "gating" and thereby fixes the position of the bolt.
Although this invention is particularly applicable to Cabinet Locks having bolts
of the kind described yet it may be applied to locks generally.

page_text: We JAMES CHATER HUDSON of N° 113 Suffolk Street, Birmingham in the
County of Warwick, Lock Manufacturer and THOMAS BAYLEY of N° 76 Irving
Street Birmingham, aforesaid, Lock Maker do hereby declare the nature of our
Invention for "AN IMPROVEMENT IN LOCKS "and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
This invention is principally applicable to locks called cabinet locks, that is, locks
in which the top of the bolt of the lock is hooked, the hooked ends engaging when
the bolt is shot with eyes or staples on a staple plate, the said eyes or staples
projecting through the lock plate. The bolts of locks of this kind are usually fixed
in their shot and withdrawn positions by means of a lever or tumbler pressed
down by a spring a stump on the lever or tumbler engaging with the "gating" in
the bolt so as to fix the said bolt in its shot or withdrawn position.
According to this invention the lever or tumbler is dispensed with and in place
thereof a flat or blade spring is used which is made to act both as a lever and
a spring. The said spring is fixed at one end to the lock case and has near its free
end a stump of tho kind usod on the ordinary lever or tumbler for engaging with
the "gating" in the sliding bolt which gating is situated in this arrangement at
the rear end of the bolt.
"
When the key is introduced into the lock and turned, it first acts upon and lifts
the free end of the spring so as to disengage the stump on the said spring from the
gating" in the bolt and the further motion of the key shoots or withdraws the
bolt in the ordinary way. The bolt having been shot or withdrawn the stump on
the spring is pressed into the "gating" and thereby fixes the position of the bolt.
Although this invention is particularly applicable to cabinet locks having bolts
of the kind described yet it may be applied to locks generally.
Figure 1 of the accompanying Drawing represents in elevation, with the plate
removed, and Figure 2 in cross section, with the plate applied, a cabinet lock made
according to this invention, the bolt being in its withdrawn position; Figures 3
and 4 represent the same views with the bolt in its shot position; Figure 5
represents in elevation and Figure 6 in cross section the same with the combined
spring and lever raised from the "gating" in the bolt; Figure 7 represents in
elevation and edge view the case of the lock together with the combined spring
and lever, the bolt being removed and Figure 8 represents the key.
The same letters of reference indicate the same parts in the several Figures of
the drawing.
a is the sliding bolt of the lock having at its top the hooked parts b, 6 for
engaging with the eyes or staples c, c in the staple plate d; e, f is the divided
gating at the rear end of the sliding bolt a; g is the flat or blade spring acting both
as a lever and a spring. One end h of the said spring lever is fixed to the lock
case and the free end is provided with a stump i at right angles to the body of
When
the spring for engaging with the "gating" e or in the sliding bolt a.
the spring lever g is in its normal position, the stump i either engages with the

page_text: "
"gating
e and fixes the bolt a in its withdrawn position as illustrated in Figures 1
and 2, or the said stump engages with the other "gating" ƒ and fixes the bolt in
its shot position as illustrated in Figures 3 and 4.
The key represented in Figure 8 is provided with two steps k, 2 the longer step k
acting upon the spring lever g and the shorter step & shooting or withdrawing the
bolt.
In order to shoot the bolt the key Figure 8 is introduced into the lock and turned
in the proper direction for shooting the bolt: The step k of the key first raises the
spring lever g so as to disengage the stump i from the gating as illustrated in
Figure 5 and the further motion of the key in the same direction causes its step 2
to shoot the bolt in the ordinary way. The like action takes place when the key
is turned in the opposite direction for withdrawing the bolt as will be understood
by an examination of Figure 3. The bolt having been shot or withdrawn the
stump i on the spring lever g is pressed into the gating e or ƒ and thereby fixes the
position of the bolt.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed We declare that what
We claim is of "An improvement in locks"
The combination with a divided "gating" at the rear end of the bolt of a flat
or blade spring having near its free end a stump for engaging with the gating in
the bolt the said flat or blade spring and its stump acting both as a lever and
a spring substantially as herein before described and illustrated in the accompanying.
Drawing.