IMPROVEMENTS IN LOCKS AND LATCHES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by the said Joseph Kaye at the Office of
the Commissioners of Patents on the 21st April 1880.
JOSEPH KAYE, of Kirkstall, near Leeds, in the County of York. "IMPROVEMENTS
IN LOCKS AND LATCHES."
My Invention relates to locks and latches, such as are employed for fastening
doors of apartments, carriages, casements, and the like, my improvements having
for their object to provide adjustment for shrinkage of the door, and convenience
and security in the operation of the lock or latch. To provide for shrinkage of the
door to which a latch or lock is applied, I fit in the striking plate a sliding piece
which by means of a setting screw can be made to project more or less beyond the
face of the striking plate. As the door shrinks, giving greater space between its
face and the shutting style, the sliding piece can by means of the screw be made
to protrude so as to receive and hold the bolt of the latch or lock. The sliding
piece may, in many cases, be fitted with an antifriction roller over which the bolt
rides as the door is closed, the bolt then engaging behind it. For doors having
narrow styles I employ latch locks of the kind described in the Specification of a
Patent granted to me and to J. W. Kaye and W. K. Kaye, on the 22nd December
1877, No. 4873, these locks being so constructed that the latch is withdrawn, not
by turning a handle or knob, but by pulling or pushing a handle or knob in the
saine direction as that in which the door opens. In a lock of this kind there is a
stem which slides transversely through the door and operates on the latch. To
this stem, according to my present Invention, I joint one end of a vertical handle,
the other end of which is spring or hinge jointed to the style of the door. By
pulling this vertical handle on the one side of the door, or pushing the like handle
on the other side, the latch is withdrawn as described in the Specification above
referred to. In some cases the handles may be horizontal. According to another
part of my Invention I arrange a latch lock of the kind above referred to, so as to
provide security, as for example, for use as a night latch, by working it with a key
in the following manner :-Within the lock facing the key hole I fit a sliding plate
Paving G71

page_text: which may be provided with tumblers like the bolt of a lock, and which has a hole
through which, when the plate is brought to one position, the key can be pushed.
The key being inserted and 'turned partly round moves the sliding plate to the
Said position, and thereupon the key can be pushed farther in, causing withdrawal
of the latch so that the door can be opened. For the purpose of withdrawing the
key from the door it must be again turned backwards, thereby moving back the
sliding plate to a position where it covers the key hole internally, and prevents the
insertion of any instrument to act upon the latch. According to another part of
my Invention I construct laich locks for doors in such a manner that when the
door is open there is no projecting bolt as in ordinary latch locks. For this purpose
I mount in the striking plate on the door post a piece of metal sloped on one side
and rounded on the face, hinging it to the striking plate with a spring behind it, so
that it is pushed outwards against a stop. In the door itself I fit a sliding bolt
which can be worked by a handle or knob, as the bolt of an ordinary latch, or can
be worked or locked by a key. In the face of the lock I make a hollow to receive
the piece of metul above described as being mounted in the striking plate, and I
make the sliding bolt of such length and stroke that its end when it is shot out
extends only a little distance beyond the face of the lock, whilst when it is
retracted by a spring its end is quite within the hollow in the face of the lock.
When the door is closed the hinged piece of the striking plate is made by its spring
to engage in the hollow in the face of the lock, thus holding the door closed. In
order to open the door the handle knob or key is turned so as to protrude the
sliding bolt, and this pushes back the hinged piece of the striking plate out of the
hollow in the face of the lock, whereupon the door can be pulled or pushed open.
The sliding bolt above described may itself be locked back by a key, or it be
combined with a lock in one and the same casing.
may

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Kaye in the Great Seal Patent Office on the 20th October
1880.
JOSEPH KAYE, of Kirkstall, near Leeds, in the County of York. "IMPROVEMENTS
IN LOCKS AND LATCHES."
My Invention relates to locks and latches, such as are employed for fastening
doors of apartments, carriages, casements, and the like, my improvements having
for their object to provide adjustment for shrinkage of the door, and convenience
and security in the operation of the lock or latch. To provide for shrinkage of the
door to which a latch or lock is applied, 1 fit in the striking plate a sliding piece
which by means of a setting screw can be made to project more or less beyond the
face of the striking plate. As the door shrinks, giving greater space between its
face and the shutting style, the sliding piece can by means of the screw be made
to protrude so as to receive and hold the bolt of the latch or lock. The sliding
piece may, in many cases, be fitted with an antifriction roller over which the bolt
rides as the door is closed, the bolt then engaging behind it. Fig. 1 is a front view
of a striking plate thus constructed; Fig. 2 being a sectional plan thereof. A is the
sliding piece carrying the roller a. As the door D shrinks from the style the
piece A is caused by turning tho screw B to slide outwards, so that the latch bolt d,
which may be either a sliding or rolling bolt, still engages behind the roller a
holding the door closed.
4
For doors having narrow styles I employ latch locks of the kind described in the
Specification to a Patent granted to me and to J. W. Kayo and to W. K. Kaye on
the 22nd December 1877, No. 4873, these locks being so constructed that the
latch is withdrawn, not by turning a handle or knob, but by pulling or pushing a
handle or knob in the same direction as that in which the door opens. In a lock
of this kind there is a stem which slides transversely through the door and operates
on the latch. To this stem, according to my present Invention, I joint one end of a
vertical handle, the other end of which is spring or hinge-jointed to the style of
the door. By pulling this vertical handle on the one side of the door, or pushing
the liko handle on the other side, the latch is withdrawn as described in the
Specification above referred to. Fig. 3 is an edge view; Fig. 4 a side view, and
Fig. 5 a sectional plan of a door style with a latch of the kind referred to, provided
with the handles C, C¹, jointed above to brackets c, c', and below to the sliding
stem E, so that on pulling the one handle C or pushing the other handle C¹, the
catch F' of the lock is withdrawn, and the door is pulled or pushed open. The
handles C, C, instead of being vertical, as shewn, may be horizontal, and instead of
being jointed by pins to the brackets c, c¹, they may be attached to the door by
spring limbs, giving sufficient flexibility to admit of the required movement of the
stem E.
According to another part of my Invention I arrange a latch lock of the kind
above referred to, so as to provide security, as for example, for use as a night latch,
by working it with a key in the following manner :-Within the lock facing the
key hole 1 fit a sliding plate which may be provided with tumblers like the bolt of
a lock, and which has a hole through which when the plate is brought to one
position the key can be pushed. The key being inserted and turned partly round
moves the sliding plate to the said position, and thereupon the key can be pushed
farther in, causing withdrawal of the latch so that the door can be opened. For
the purpose of withdrawing the key from the door it must be again turned back-
wards, thereby moving back the sliding plate to a position where it covers the key

page_text: hole internally, and prevents the insertion of any instrument to act upon the lock
latch. Fig. 6 is a front view of the interior of a latch lock thus constructed, and
Fig. 7 is a sectional plan of the same; Figs. 8 and 9 being corresponding views
shewing the latch withdrawn by pushing in the key K. On first introducing the
key it is stopped from farther insertion by the sliding plate G, but on turning the
key round the plate slides forwards so as to present a hole k through which the
key can be pushed so as to act on the end of the lever Land so cause withdrawal
of the latch F. Any known arrangement of tumblers, such as H, can be introduced
into the front part of the lock so as to provide against the use of false keys.
According to another part of my Invention 1 construct latch locks for doors in
such a manner that when the door is open there is no projecting bolt as in ordinary
latch locks. For this purpose I mount in the striking plate on the door post a
piece of metal sloped on one side and rounded on the face, hinging it to the striking
plate with a spring behind it so that it is pushed outwards agaiust a stop. In the
door itself I fit a sliding bolt which can bo worked by a handle or knob, as the bolt
of an ordinary latch, or can be worked or locked by a key. In the face of the lock
I make a hollow to receive the piece of metal above described as being mounted in
the striking plate, and I make the sliding bolt of such length and stroke that its
end when it is shot out extends only a little distance beyond the face of the lock,
whilst when it is retracted by a spring its end is quite within the hollow in the
face of the lock. When the door is closed the hinged piece of the striking plate is
made by its spring to engage in the hollow in the face of the lock, thus holding the
door closed. In order to open the door the handle knob or key is turned so as to
protrude the sliding bolt, and this pushes back the hinged piece of the striking
plate out of the hollow in the face of the lock, whereupon the door can be pulled or
pushed open. The sliding bolt above described may itself be locked back by a key,
or it may be combined with a lock in one and the same casing. Fig. 10 is a side
view shewing the interior of a lock thus constructed; Fig. 11 is a back view of its
striking plate; Fig. 12 is a sectional plan shewing the catch engaged; and Fig. 13
is a sectional plan shewing it disengaged so that the door can be opened. Within
the lock is fitted the spring sliding bolt M, which can be protruded by the partial
turning of a knob stem N, as iudicated by the dotted lines in Fig. 10. In the
striking plate is pivotted the hinge piece Ŭ, which is pressed by a spring o so as
to engage in the hollow in the face of the lock, as shewn in Fig. 12. When by
turning the knob stem N the bolt M is protruded it pushes the hinged piece O out
of the hollow of the lock, leaving the door free to be opened. The spring bolt M
may have a tubular casing, as shewn in side view at Fig. 14, and longitudinal
section at Fig. 15, or it may be combined with a lock having a separate bolt, as
shewn in vertical and horizontal section at Figs. 16 and 17, or it may itself be
locked by a bolt Q shot into a notch of it so as to prevent it from being protruded
by the turning of the knob stem N, as shewn in Fig. 18, or it may be worked from
one side of the door by a key, and on the other side by a pushing knob P, as shewn
in horizontal and vertical section in Figs. 19 and 20, the lock being fitted if
desired with tumblers or wards to prevent the use of falso keys.
Having thus described the nature of my Invention, and in what manner the
same is to be performed, I claim,—
First. The construction of striking plate for a door latch with a sliding piece
that can be protruded as the door shrinks so as to engage the latch, substantially
as herein described with reference to Figs. 1 and 2 of the accompanying Drawings.
Second. For a latch, the catch of which is withdrawn by the pull or push of a
transversely sliding stem, the use of handles jointed to the stem, substantially as
herein described with reference to Figs. 3, 4, and 5.
Third. The construction substantially as herein described, with reference to
Figs. 6, 7, 8, and 9, of a latch lock which is opened by the thrust of a key through
a hole in a sliding plate, which hole is not presented for passage of the key until
the key has been turned within the lock.

page_text: Fourth. The combination of a sliding spring bolt M fitted in a door latch or lock,
with a hinged piece O mounted in a striking plate, and pressed by a spring so as
to engage in a hollow in the edge of the door, unless when it is pressed back by
the protrusion of the sliding bolt, substantially as and for the purpose herein set
forth with reference to Figs. 10 to 20 inclusive.
In witness whereof, I, the said Joseph Kaye, have hereunto set my hand and
seal, this Eighteenth day of October, in the year of our Lord One thousand
eight hundred and eighty.
Witness to the Signature of Joseph Kaye,
CHA³. R. CHORLEY, J.P.,
for the Boro' of Leeds.
JOSEPH KAYE. (L.S.)