Improvements in Combined Locks and Lift Up Latches.
Year: 1899

page_text: Date of Application,
4000
1000
Complete Specification Left, 31st July, 1900-Accepted, 1st Sept., 1900
Date of Apprivation, ITUI HUVIJ
Complete Specification Left, 31st July, 1900-Accepted, 1st Sept., 1900
"
PROVISIONAL SPECIFICATION.
Improvements in Combined Locks and Lift Up 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:-
be
This invention consists of the herein described improvements in combined
locks and lift up latches for doors and gates. A combined lock and
lift up latch as heretofore usually made has the lift up latch project-
ing from the front and arranged to be lifted by striking the striker
on the door post or by turning the knob or handle, and also has below said
latch the bolt which is shot to and fro by turning the key. By my invention I
simplify the construction of the lock and lift up latch as I combine the latch
and the bolt in one piece so arranged that when it has been shot back to the
unlocked" position by turning the key the combined lift up, latch and bolt
can be lifted by the striker or by turning the knob or handle, but when the
combined lift up latch and bolt has by the key been shot forward to its
locked" position then the combined lift up latch and bolt cannot be lifted.
My said combined lift up latch and bolt is made like the bolt of a door lock
to slide to and fro in the lock case but can also lift up and at its fore end
there is formed an inclined projection like the fore end of the usual lift up latch
this fore end projecting from the lock case when the combined lift up latch and
bolt is in its unlocked position. The fore end of the bolt part above this pro-
jection is cut away so as to clear the front of the lock case and allow of the com-
bined lift up latch and bolt being lifted by the knob or handle. The said
and bolt turns and
combined litt up lateh
slides about
pin situated in the lock case beyond the key hole the combined lift
ap latch and bolt being slotted where the fulcrum pin passes through
the slot thus allowing the lift up latch and bolt to be shot to and fro by the key
as well as lifted up by the knob or handle. The follow of the knob spindle is
so situated as to act upon and depress the tail end of the combined lift up latch
and bolt within the lock case. A spring acting through a lever or otherwise
arranged continually presses the lift up latch and bolt downwardly so as to cause
it to fall after it has been lifted by the striker or by turning the knob or handle.
The combined lift up lock and latch is operated by the key and is provided with
suitable tumbler or lever mechanism for maintaining it in its locked or unlocked
position but the slot or nutch in the combined lift up latch and bolt with which
the levers or tumbler engages is so shaped as to allow of the combined lift up
latch and bolt being lifted by the knob or handle as aforesaid.
a
fulcrum
Thus it will be seen that when the lock is unlocked the latch is free to be
lifted by striking the striker on the door post or by turning the knob or handle
the follow of which depresses the tail end of the combined lift up
latch and bolt and as the front of the bolt part is cut away
combined lift up latch and bolt is free to rise clear of the front of the lock case,
the

page_text: When the combined lift up latch and bolt is shot forward to its locked position
by turning the key, the hole in the front of the lock case is filled by the combined
lift up lutch and bolt and therefore cannot rise which prevents the knob or
handle from being turned:
Instead of the follow of the knob or handle acting directly upon the com-
bined lift up latch and bolt as above described the said follow may act upon one
arm of a two armed lever which is situated above the combined lift up latch
and bolt and turns upon a fulcrum pin fixed in the case, the other end of said
lever engaging in a slot in the lift up latch and bolt so as to lift the same when
the tail end of the said lever is depressed by the follow. This lever is also acted
upon by the spring to depress the combined lift up latch and bolt to its normal
position. The slot in the combined lift up latch and bolt in which works the
two armed lever operated by the follow may be made so long that the slot
does not leave the end of the lever when the combined lift up latch and bolt
is shot forward therefore preventing the lever and the knob or handle being
turned when the combined lift up latch and bolt is in its locked position.
Dated this 11th of Na 1900
improvements in Combined Locks and Lit Up Latches.
I, ANDREW CASH, 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 consists of the herein described improvements in combined
locks and lift up latches for doors and gates. A combined lock and
lift up latch as heretofore made has the lift up
latch projecting
from the front and arranged to be lifted by striking the striker
on the door post or by turning the knob or handle, and also has below said
latch the bolt which is shot to and fro by turning the key. By my invention I
simplify the construction of the lock and lift up latch as I combine the latch
and the bolt in one piece so arranged that when it has been shot back to the
"unlocked" position by turning the key the combined lift up latch and bolt
can be lifted by the striker or by turning the knob or handle, but when the
combined lift up latch and bolt has by the key been shot forward to its
"locked" position then the combined lift up latch and bolt cannot be lifted:
I will describe my invention by referring to the accompanying drawings on
which Fig. 1 is an interior front elevation of a combined lift up latch and lock
constructed according to this invention; Fig. 2 is a sectional plan of the same
on line X X of Fig. 1; Fig. 3 is also an interior elevation of the same shewing
the combined lift up latch and bolt in its locked position; Fig. 3* is a front view
of the lift up latch and bolt separately: Fig. 4 is an interior front elevation of
another combined lift up latch and lock illustrating a modification of my inven-
tion; Fig. 5 shews the same parts as Fig. 4 with the combined lift up latch and
bolt in its locked position; Fig. 6 is a sectional plan on line Y Y of Fig. 4 and
Fig. 7 shews an alternative form of a part of the combined lift up latch and bolt
represented in Figs. 4 and 5.
The same letters of reference indicate the same or corresponding parts in all
the figures of the drawings.

page_text: Referring firstly to Figs. 1, 2, 3 and 3*, my said combined lift up latch and
bolt A is made like the bolt of a door lock to slide to and fro in the lock case
B but can also be lifted up and at its fore end there is formed an inclined pro-
jection like the fore end of the usual lift up latch to strike and engage with
the striker on the door post this fore end a projecting from the lock case when
the combined lift up latch and bolt A is in its unlocked position represented
by Figs. 1 and 2 as also when the bolt is in its locked position represented
by Fig. 3. The fore end of the bolt part A above the projection a¹ is cut away
at so as to clear the front b of the lock case B and allow of the combined lift
up latch and bolt A being lifted by the knob or handle as indicated by dotted
lines in Fig. 1. The combined lift up latch and bolt A turns and slides about
a fulcrum piu C situated in the lock case beyond the key hole 1) the combined
lift up latch and bolt A being slotted at a where the fulorum pin C passes
through thus allowing the lift up latch and bolt A to be shot to and fro by
turning the key in the usual way as well as lifted up by the knob or handle on the
usual knob spindle E. The follow I of the knob spindle E is so situated as
shewn as to act upon and depress the tail end a of the combined lift up latch
and bolt A within the lock case. A spring G, acting through the lever H which
turns on the fulcrum pin h¹ fixed in the lock case (or the spring may be other-
wise arranged) presses the lift up latch and bolt A downwardly so as to cause
it to fall after it has been lifted by the ordinary striker acting against the
inclined part a¹ or by turning the knob or handle spindle E. The combined
lift up latch and bolt A is operated by turning the key in the key hole 1) in
the usual way and is provided with a suitable tumbler I or with ordinary lever
mechanism for maintaining the combined lift up latch and bolt A in its locked
or unlocked position but the slot a or notch in the combined lift up latch and
bolt A with which the lever or tumbler I engages is so shaped as illustrated in
Figs. 1 and 3 as to allow of the combined lift up latch and bolt A being lifted
by the turning of the knob or handle spindle E as aforesaid.
Thus it will be seen that when the lock is unlocked, as in Figs. 1 and 2,
the combined lift up latch and bolt A is free to be lifted up by its inclined fore
end a striking the striker on the door post, or by the turning of the knob or
handle spindle E the follow F depresses the back end of the combined lift
up latch and bolt A and as the front of the bolt part is cut away at a³ the
combined lift up latch and bolt is free to rise as indicated by the dotted lines
in Fig. 1 clear of the front b' of the lock case B. When the combined lift up
latch and bolt A is, by the turning of the key, shot forward to its locked position
as shewn in Fig. 3 the hole in the front b of the lock case is filled by the
part of the combined lift up latch and bolt A and therefore cannot rise which
also prevents the knob or handle spindle E from being turned.
Instead of the follow of the knob or handle spindle E acting directly upon
the combined lift up latch and bolt A as above described and illustrated in
Figs. 1, 2 and 3, the said follow may (see Figs. 4, 5, 6 and 7) be arranged to
act upon the arm of the two armed lever J which is situated above the com-
bined lift up latch and bolt A and turns upon a fulcrum pink fixed in the lock
case B the other end of the lever J engaging in a slot in the upper part of
the lift up latch and bolt so as to lift the same when the back end of the lever J
is depressed by the follow as indicated by dotted lines in Fig. 4. This lever J
is also acted upon by a spring L so as, to depress the combined lift up latch
and bolt to its normal position.
The slot in the combined lift up latch and bolt A in which works the end
of the arm of the lever J is by preference made so short that when the combined
lift up latch and bolt A is shot forward to its locked position as represented in
Fig. 5 the end of the lever J can rise outside the slot and therefore the knob
or handle on the spindle E can be turned in the usual way although it does
not operate the lift up latoh and bolt A. Or the slot a may be made so long,
that is to say, as shewn in Fig. 7, that the slot a does not leave the end of

page_text: the lever J when the combined lift up latch and bolt is shot forward to the
position represented in Fig. 5 therefore in this case preventing the lever J and
the knob or handle on the spindle E from being turned when the combined lift
up latch and bolt A is in its locked position as represented in Fig. 5.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
--
1. In a combined lock and lift up latch, the employment of a bolt adapted to
be shot to and fro by turning the key and also having an inclined projection on
its fore end so as to be lifted by and engage with the striker on the door post
thus forming a combined bolt and lift up latch, tumbler or lever mechanism to
lock the said combined bolt and lift up latch in its shot forward position, means
for guiding the combined bolt and lift up latch and a spring to depress it, the
parts being so arranged that when the combined bolt and lift up latch is shot
back in its unlocked position it can be lifted by the knob or handle, or by the
inclined fore end striking the striker ou the door post, but when the combined
bolt and lift up latch is by the key shot forward it is locked, substantially as
described.
2. In a combined lock and lift up latch, the combination with the lock case of
the combined bolt and lift up latch A adapted to be shot to and fro by turning
the key and also having the inclined projection a¹ on its fore end so as to be
lifted by and engage with the striker on the door post, tumbler or lever mecha-
nism to lock said combined bolt and litt up latch in its shot forward position,
the pin C passing through a slot in the combined bolt and lift up latch and
about which the same turns, the follow F on the knob or handle spindle acting
upon the tail end of the combined bolt and lift up latch and a spring arranged to
depress the same, said parts being so arranged that when the combined bolt and
lift up latch A is in its unlocked position it can be lifted by the follow F on the
knob or handle spindle, or by the inclined fore end a striking the striker on
the door post, but when the combined bolt and lift up latch A is by the key shot
forward it is locked, all substantially as herein described and illustrated by
Figs. 1, 2, 3 and 3 of the accompanying drawings.
B. In a combined lock and lift up latch, the combination with the lock
case of the combined bolt and lift up latch A adapted to be shot to and fro
by turning the key and also having the inclined projection on its fore end
so as to be lifted by and engage with the striker on the door post, tumbler or
levor mechanism to lock said combined bolt and lift up latch in its shot forward
position, the pin C passing through a slot in the combined bolt and lift up latch
and about which the same turns, the follow F on the knob or handle spindle
acting upon the one arm of the lever J the other arm of which engages with and
lifts the combined bolt and lift up latch, and a spring arranged to depress the
same, said parts being so arranged that when the combined bolt and lift up
latch A is in its unlocked position it can be lifted by the follow on the knob
or handle spindle, or by the inclined fore end a striking the striker on the door
post, but when the combined bolt and lift up latch A is by the key shot for-
ward it is locked, all substantially as hercin described and illustrated by Figs. 4,
5, 6 and 7 of the accompanying drawings.