Improvements in Door-knob and like Furniture or Fittings.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Door-knob and like Furniture or Fittings.
I, HENRY CHALK WEBB, Builder, residing at "Woodside," Lightwoods Road, Upper
Hagley Road, in the City of Birmingham, do hereby declare the nature of this
invention to be as follows :-
This invention relates to door-knob and like furniture or fittings, and has for its
object a simple and effective means for locking the said knobs or turns and their
accessory catch-parts to the spindles carrying them.
the corners.
The said invention distinctly relates to that class of door, drawer, and like furni-
ture in which the knob or turn or accessory catch-part is carried adjustable upon a
screw-threaded angular-sectioned spindle, the said screw-threaded parts being upon
In all such fittings an adjustment is requisite in respect of the thick-
ness of the door, or the like, upon which they are applied, and this is accomplished
by travelling the knob, turn, or accessory catch-parts, along the screwed spindle
by rotating it, after which the said part requires to be locked in its adjusted
position.
:
To effect such a locking in a simple and neat manner, and so that a subsequent
unlocking is easy, constitutes this invention, the means employed being a rib, key,
tongue, bolt, or its equivalent, jointedly connected to the pummel or neck-part of the
knob, or to an accessory catch-part of the knob fitting, in such a manner as to be
within a slot or cut-away part formed within the said puinmel or neck, or accessory.
catch-part body, so that one of its edges projects or extends for a short distance into
the circular and axial spindle hole in the said pummel or catch-part; the said edge,
when the rib or key, or its equivalent, is in a locking position, bearing against one. of
the flat faces of the screwed spindle and preventing its rotation, and so effectively
locking the knobs longitudinal adjustment.
When applying this invention to ordinary door-knob fittings the locking rib or
key, which is approximately a quarter of an inch in thickness, is hinged or jointed
to the pummel or neck of the knob so as to be within a longitudinal slot or cut away
part formed therein, and to conform to the shape thereof. The said rib is so jointed
upon a horizontal axis or pin as to vertically hinge out of the slot in the pummel
when the knob is being unlocked from its spindle to effect an adjustment, and its
depth is such that its lower edge extends or projects into the axial hole of the
pummel sufficient to lie upon one of the square faces of the screwed knob's spindle,
when the latter is in position, and so prevent the knob's rotation thereon, and
consequent longitudinal traverse; the locking means allowing of an adjustment
equal to a quarter rotation of the knob upon the spindle. The locking rib may be
jointed at either of its ends, and the same may be made stiff in its joint and to
either easily or tightly fit the slot or cut away part in the pummel, in order to prevent
the rib leaving the slot by its own gravitation.
It is preferable that the said rib be made from sheet metal, so that its sides will
spring or yield when the said rib is forced into its slot and cause sufficient friction to.
prevent its very easy withdrawal. The said rib is so jointed within the slot of the
pummel as to resemble somewhat a lever of the first order, the one arm being a long
one and the other extremely short, the former arm to bear on the spindle, and the

page_text: latter one to constitute a small projection or nose by which the locking arm of the
rib can be thrown out from its position within the slot.
A spring catch may be used capable of being released when the rib is required to
be thrown back for fixing the latter in its locking position in respect of the knob
spindle, or the rib can be loosely jointed within the slot of the pummel and be held
in a locking position by a spring ring, capable of being taken off and put onto the
knob's neck easily.
In cupboard-turns, the invention is applied to the catch or cam-plate, which is the
adjusting part in respect of the fitting. In this case the locking rib would be made
of the same thickness as the catch or cam-plate, and be jointed thereto to lie within
a longitudinal slot or cut-away part in the said plate so that its free end would
impinge or abut against one of the faces of the angular spindle and so prevent the
cam-plate being rotated. The joint of the locking rib or tongue would also, in this
case, be a stiff one, and the fitting of the said rib good within the slot.
Thus I provide door-knob and like furniture with a simple and effective locking
means having no loose parts such as set pins, wedge plates, and other devices, well
known in this art, to get astray.
Dated the 2nd da
1007
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Agents for Applicant.
I, HENRY CHALK WEBB, residing at "Woodside," Lightwoods Road, Upper Hagley
Road, in the City of Birmingham, do hereby declare the nature of this invention, and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to cupboard turns and like furniture for doors, hinged parts
of show cases, and general hinged fittings, and it has for its object a simple and
effective means for locking the catch or cam plates thereof, which are the adjusting
parts upon the spindles, to the spindles which carry them.
The said invention distinctly relates to that class of cupboard turn, or the like, in
which the catch or cam plate is carried adjustably upon a screw threaded angular
spindle, the said screw threaded parts being only upon the spindle's corners. In all
such turns an adjustment of the catch or cam plate is requisite in respect of the
thickness of a door, or the like, to which they are applied, and also so that the said
door or the like may fasten close, and this is accomplished by travelling the catch or
cam plate along the screwed spindle by rotating it, after which the said catch plate
requires to be firmly locked in its adjusted position.
To effect such a locking in a simple and neat manner, and also so that a subsequent
unlocking, an adjustment, and a relocking of the latter is easy is the purpose of this
invention, the same being accomplished by fitting to the said catch or cam plate a
hinged tongue-piece, key, bolt, or its equivalent, which is adapted to lie within the
bifurcations of a longitudinal slot or cut-away part in the said plate so that its free
end at one time will abut or impinge against one of faces, flats, or grooves, of the
angular spindle and prevent the cam plate being rotated thereon, and at another
time hinge away from the said face or flat and allow of the rotation of the cam plate
upon the screwed part of the spindle.
In the accompanying sheet of drawings the invention is clearly illustrated applied
to the catch plate and spindle of an ordinary cupboard turn; Fig. 1 in the said sheet
being a longitudinal view of the said turn with the cam plate in section, Fig. 2 a

page_text: side view of the cam plate in its locked position upon the spindle, and with the latter
in section, Fig. 3 a like side view as Fig. 2 but with the catch plate freed from the
spindle so that it may turn, and Fig. 4 a slight modification showing the spindle
with grooved faces instead of flat ones. In the said drawings a² is the spindle of the
cupboard turn , and this is formed of a square section and with screwed portions
upon the corners of its one end in the ordinary way. c is the catch or cam plate
which has a screwed hole, or an eye, c², through it at one end, so that it may engage
and travel upon the screwed end of the spindle a². The middle part of the cam
plate, leading from the screwed eye c² to near its end, is formed with a slot or cut-
away part, c, within which swings a jointed tongue, key or bolt d. The one end d²
of this key or bolt d has a joint pin passed through it, to connect it to the catch
plate as aforesaid, its other end d³, which is preferably slightly inclined, being
arranged so that when the said key or. bolt is in line with the catch plate it shall
tightly impinge upon one of the flats or faces a³ of the spindle a² and wedge itself
between its joint pin and the said spindle. In Fig. 1 (in dotted lines) and in Fig. 3,
in full, is shown the position of the key or bolt d when hinged outwardly from the
catch plate, c, so as to allow the latter to rotate on the spindle in order that the said
catch plate can be adjusted.
As before described the key or bolt d when in line with the catch plate and holding
the latter to the spindle becomes wedged, or a good fit; consequently it may be
necessary to use a little force to remove the key when an adjustment of the catch
plate is required, and so in view of this the joint pin is passed through the said key a
short distance inwards of its end d2, which allows the said end to be used as a levering
means for displacing the bolt d from its locking position.
Thus it will be seen that according to this invention the locking means to the catch
or cam plate are not composed of any loose parts such as set pins, and other devices
which are liable to be lost, and that it forms a very rigid and a very neat means of
connection between the cain plate and the spindle.
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 :-
First. In cupboard turns of the kind herein described, locking the catch or cam
plate to the screwed end of the spindle by means of a hinged key or bolt which is
fitted to the catch plate so as to be in line when the parts are locked, and hinged
outwardly when the parts are freed, and which is adapted to grip the adjacent face of
the spindle and to wedge itself between the said face and its joint pin, substantially
as set forth.
Second. In combination in a cupboard or like turn, a screwed spindle a² having
flats or faces a³ upon it, a catch or cam plate c having a screwed eye for engaging the
screwed spindle, and also having a slot or a cut-away part c³ within it, and a key or
bolt d hinged within the said slot or cut-away part so as to form a removable wedging
piece between one of the spindle's faces and the said catch plate, and being hinged to
its catch plate so that its end d² forms a levering part for the removal of the said key
or bolt, substantially as described.
Ր
T
1000
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Also of Liverpool, London and Manchester,
Patent Agents for the Applicant.