Certain Improvements in Door and Gate Locks and Latches.
Year: 1898

page_text: Date of Application, 19th Feb., 1898
Complete Specification Left, 21st Nov., 1898-Accepted, 7th Jan., 1899
PROVISIONAL SPECIFICATION.
Certain Improvements in Door and Gate Locks and Latches.
I, ANDREW CASHIN, of Ivy House, Park Road, Sutton Coldfield, in the County
of Warwick, Lock Manufacturer, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to all kinds of one bolt locks and latches for gates
and doors, including draw back locks and latches, one bolt rim locks, rim night
latches, one bolt gate locks of all kinds and one bolt mortice locks and latches.
One bolt locks and latches have heretofore been provided with a slide which
can be so moved as to engage with the bolt and retain the bolt drawn back
into the lock case or latch case so as not to engage with the catch plate. The
object of my invention is to dispense with this slide and to provide spring catch
mechanism inside the case for engaging with the bolt and retaining the same
drawn back against the spring said catch mechanism being arranged to be so
operated by the key which operates the bolt that when the bolt is by turning
the key moved back into the case so far that the fore end of the bolt will not
engage with the catch plate, the said catch mechanism will retain the bolt in this
position, and then when it is desired to release the bolt this is done by turning
the key in the opposite direction so as to actuate the said catch mechanism and
release the bolt which will then be shot forward again by the spring. The said
catch mechanism is moreover so arranged that when the bolt is drawn back by
the turning or sliding of the knob, the said catch mechanism does not engage with
the bolt, but only when the bolt is by the turning of the key moved back into
the case so far as not to engage with the catch plate.
According to one arrangement of carrying out my invention I provide a lever
which turns on a pin preferably arranged above the bolt this lever lying across the
bolt so that its lower end will be in the path of the key and be operated thereby. The
At the side
said lever has a peg on one face which takes into a slot in the bolt.
of said lever and preferably located between the knob or handle of the lock or
latch and the key, I provide a spring catch made with a tail piece to be operated
by the key and also provided at the front with a shoulder or catch which will
engage with a notch formed on the aforesaid lever. The operation of these parts
is as follows:-The act of drawing back the bolt by the turning of the knob or
the sliding of the knob in the usual way does not affect the lever and catch piece
because the slot of the bolt in which the peg of the lever engages is made long
enough to allow of the bolt moving backwards or forwards without acting on the
lever, but when the bolt is moved back clear of the catch plate by turning the
key the key also acts upon the lower end of the said lever moving the same
backwardly until its notch is caught by the inclined end of the catch piece which
thus retains the lever and the bolt in this position with the front end of the bolt
free of the catch plate. To release the bolt the key has to be turned in the oppo-
site direction so as to act upon the tail of the spring catch piece and lift the catch

page_text: free of the notch in the lever when the bolt will be free to be shot forward by
the spring.
In another arrangement of my invention I dispense with the said lever and I
make the said catch piece to engage with a projecting piece formed on the bolt.
In this case there is a stop or stops in the lock case to prevent the knob from
being turned or slided so far as to draw back the bolt far enough for the catch
to engage with the projection, so that, as in the arrangement first above described,
the bolt cannot be permanently retained drawn back within the case by the
turning or sliding of the knob; but when the bolt is moved back into the case
by the turning of the key the bolt is then moved a little farther back than when
operated by the knob so that the catch piece engages with the projection on the
bolt and thus holds the bolt back in the case free of the catch plate. To release
the bolt the key has to be turned in the opposite direction so as to act upon the
tail end of the catch piece and lift the same free of the projecting part of the
bolt so that the latter will then be shot forward by the spring.
Dated this 18th day of February 1898.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
Certain Improvements in Door and Gate Locks and Latches.
I, ANDREW CASHIN, of Ivy House, Park Road, Sutton Coldfield, in the County
of Warwick, Lock Manufacturer, 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 all kinds of one bolt locks and latches for gates
and doors, including draw back locks and latches, one bolt rim locks, rim night
latches, one bolt gate locks of all kinds and one bolt mortice locks and latches.
One bolt locks and latches have heretofore been provided with a slide which
can be so moved as to engage with the bolt and retain the bolt drawn back
into the lock case or latch case so as not to engage with the catch plate. The
object of my invention is to dispense with the slide and to provide a spring catch
mechanism inside the case for engaging with the bolt and retaining the same
drawn back against the spring said catch mechanism being arranged to be so
operated by the key which operates the bolt that when the bolt is by turning
the key moved back into the case so far that the fore end of the bolt will not
engage with the catch plate, the said catch mechanism will retain the bolt in this
position, and then when it is desired to release the bolt this is done by turning
the key in the opposite direction so as to actuate the said catch mechanism and
release the bolt which will then be shot forward again by the spring. The said
catch mechanism is moreover so arranged that when the bolt is drawn back by
the turning or sliding of the knob, the said catch mechanism does not engage with
the bolt, but only when the bolt is by the turning of the key moved back into
the case so far as not to engage with the catch plate.
I will describe my invention by referring to the accompanying drawings on
which Fig. 1 shews a one bolt door lock with my invention applied; Fig. 2
shews the same lock as Fig. 1 with the bolt moved back by turning the key and
retained in this position by my invention; Fig. 3 also shews the same lock but
with the key turned in the opposite direction to that represented in Fig. 2 so as
to release the bolt which is represented as shot forward by the spring to engage
with the catch plate; Figs. 4 and 5 shew parts of my invention separately;

page_text: Fig. 6 shews a one bolt door lock with another arrangement of my invention
applied thereto; Fig. 7 shews the same lock as Fig. 6 with the bolt moved back
by the key almost to the position to be retained by my invention Fig. 8 shews
the same lock as Figs. 6 and 7 with the bolt held back in the lock case by my
invention; and Fig. 9 also shews the same lock as Figs. 6, 7 and 8 but with
the catch lever raised by turning the key and the bolt released; Figs. 10, 11
and 12 shew separate parts of the lock illustrated in Figs. 6, 7, 8 and 9.
The same letters of reference indicate the same or corresponding parts in all
the figures.
According to one arrangement illustrated by Figs. 1 to 5 both inclusive, of
carrying out my invention I provide a lever A which turns on a pin B fixed in
the lock case and preferably arranged above the bolt C of the lock this lever A
lying across the bolt C so that the lower end a¹ of the lever will be in the path
of the key D and be operated thereby in the manner hereinafter described.
The lever A has a peg 2 on one face which takes into a slot c¹ in the bolt C.
At the side of the lever A and preferably located between the follow E (through
which the knob spindle passes) and the key I) I provide a spring catch F' shewn
separately by Fig. 4 made with a tail piece fi to be operated by the key D and
also provided at the front with a shoulder or catch f³ which will engage with a
notch a³ in the lever A. This spring catch F turns on a pin g in the lock case.
The spring catch lever F is provided with a spring f arranged to turn the same
downwardly. The upper part of the lever A is by preference provided with a
recessed arm a¹ against which the outer end of the spring f bears so that the
spring f³ serves both for the lever A and for the catch piece F. This arrangement
however, of the spring f³ is immaterial as it will be evident that if desired the
lever A may be fitted with a separate spring which, however, has to be arranged
as to make the lever A turn towards the spring catch F.
The operation of the parts above described is as follows:-The act of drawing
back the bolt C by the turning of the knob or by the sliding of the knob (which
in this latter case would be fixed to the bolt C in the usual way) does not affect
the lever A and the catch piece F because the slot c¹ of the bolt C in which the
peg a of the lever A engages is made long enough to allow of the bolt C moving
backward from the position shewn in Fig. 1 to that shewn in Fig. 2 or back
again to the position shewn in Fig. 1 without acting on the lever A. When,
however, the bolt C is moved back into the lock case by turning the key in the
direction indicated by the arrow in Fig. 2 so that the fore end of the bolt will
be clear of the catch (which latter is not shewn on my drawing) the key D also
acts upon the lower end a¹ of the lever A as shewn in Fig. 2 moving the same
backwardly until its notch a³ is caught by the inclined end of the catch
piece which thus retains the lever A and the bolt C in this position with the
front end of the bolt C free of the catch plate. It will be understood that the
bolt cannot move forward from the position shewn by Fig. 2 because the back
end of the slot c¹ takes against the side pin a² of the lever A which latter as
aforesaid is retained by the catch F. To release the bolt C the key has to be
turned in the opposite direction, that is as indicated by the arrow in Fig. 3, so
that the key will act upon the tail f' of the spring catch F and lift the catch F
free of the notch a³ in the lever A and then the holt C will be free to be shot
forward by the usual spring H at the back of the bolt C. If it is desired to shoot
the bolt to its extreme forward or locked position indicated by the dotted lines
at the right hand side of Fig. 3 the key has to be turned backwardly for a short
distance in the opposite direction to that indicated by the arrow in Fig. 3 so as
to allow the spring catch piece F to resume its normal position shewn in Fig. 1,
then when the turning movement of the key is continued in the direction indi-
cated by the arrow in Fig. the bit of the key engages with the usual notch c³
of the bolt C in the usual way and moves the bolt C forward to its locked position.
It will be understood that there is the usual tumbler at the back of the bolt C
but this is not shewn on my drawing as it is of the usual kind,

page_text: In another arrangement of my invention which is illustrated by Figs. 6
to 12 both inclusive I dispense with the lever A and I make the
spring catch piece F to engage with a projecting piece formed on the
face of the bolt C. This projection ct is located immediately above the top of the
spring catch F (see Fig. 6) so that when the bolt C is drawn back within the lock
case by the turning of the knob on the spindle which passes through the follow E,
or by the sliding of the knob which in this case would be fixed to the
bolt C, the latter will not be retained in the lock case because so long as the
spring catch piece F remains in the normal position shewn by Fig. 6 the end f
of the catch piece is not in the path of the projection c* and therefore does not
come into contact therewith. Thus, as in the arrangement first above described,
the bolt C cannot be permanently retained drawn back within the lock case by
the turning or sliding of the knob, but this can only be accomplished by the
turning of the key in the direction indicated by the arrow in Fig. 7 so that the
bit of the key in moving back the bolt C raises as usual the tumbler I, which
near its outer end has a side projecting part which in its turn takes under and
lifts the spring catch F as shewn in Fig. 7 far enough for the projection c* of the
bolt C to act against the inclined fore end f³ of the catch piece F and lift the
same until, when the bolt C is in its back position shewn in Fig. 8, the projec-
tion will now take against the shoulder 2 of the lever catch F and thus the
bolt C will be retained drawn back in the lock case. To release the bolt C the
key has to be turned in the direction indicated by Fig. 9, which is the opposite
direction to that indicated by Fig. 7, so as to act upon the tail end f¹ of the
catch piece F and lift the same free of the projecting part of the bolt so that
the latter will then be shot forward as aforesaid by the spring H. As in the
arrangement first above described and illustrated by Figs. 1, 2, 3, 4 and 5 the
bolt C is shot out to its extreme forward or locked position, indicated by the
dotted lines in Fig. 6, by turning the key in the opposite direction to that indi-
cated by the arrow in Fig. 9 far enough to allow of the spring catch I to resume
its normal position shewn by Fig. 6, and then the key D is turned in the direction
indicated by the arrow in Fig. 9 so as to engage with the slot of the bolt C and
shoot the bolt forward.
It will be understood that my invention can be applied to one bolt lever locks
and latches similarly as above described with reference to one bolt tumbler locks.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. In one bolt locks and latches for gates and doors and in combination with
the spring bolt of the same, the employment of spring catch mechanism arranged
to be only operated by turning the key so as to engage with and retain the bolt
when the latter has by the turning of the key been moved back in the case so
far as not to engage with the catch plate, and to release the bolt by the act of
turning the key in the opposite direction, substantially as described.
2. In one bolt locks and latches for gates and doors and in combination with
the spring bolt C thereof, the employment of the spring catch mechanism con-
sisting of the lever A turning on the fulcrum pin B fixed to the lock case and
made with side pin a² engaging with a slot in the bolt and arranged to be
moved back by the key, and the spring catch I made with a shoulder or catch fa
at one end to engage with a corresponding catch a³ of the lever A and also pro-
vided with a tail fi to be operated by the key when turned in the direction to
shoot the bolt, said parts being constructed arranged and operating substantially
as hereinbefore described and with reference to Figs. 1, 2, 3, 4 and 5 of the
accompanying drawings.
3. In one bolt locks and latches for gates and doors and in combination with
the spring bolt C thereof made with projection e, the employment of the spring
catch F jointed to the lock case and having an inclined and notched fore end f

page_text: to engage said projection and the tumbler I made with the side projection ¿¹
to lift the spring catch F, these parts being so arranged that when the bolt C
is moved back by the knob the bolt C is not retained by the spring F but when
the bolt C is moved back by the turning of the key so far as not to engage with
the catch plate the lever F is lifted by the key and engages with the projection c
of the bolt C and thus retains the bolt drawn back within the lock case and when
the key is turned in the opposite direction the key acts upon the tail end f¹ of
the spring catch and lifts the same free of the projection so that the bolt then
shoots forwards substantially as hereinbefore described with reference to Figs. 6,
7, 8, 9, 10, 11 and 12 of the accompanying drawings.
Dated this 18th day of November 1898.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.