Improvements in or relating to Securing Door Knobs to their Spindles.
Year: 1890

page_text: Date of Application, 4th June, 1890
Complete Specification Left, 4th Mar., 1891-Accepted, 4th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Securing Door Knobs to their
Spindles.
I, WILLIAM COCKBURN, of 16, Cargo Fleet Road, Middlesbrough, in the
County of York, Foreman Joiner, do hereby declare the nature of this invention
to be as follows:-
My invention relates to the means for securing door knobs to their spindles, and
consists in a simple and reliable mode of attaching the removeable knob to the
spindle, and also of retaining the spindle and the fixed knob in position until
released by unscrewing the rose from the door and off the spindle.
In securing door knobs to their spindles, screw pins are often screwed through the
neck of the knob and let into the spindle, which screw pins are liable to get loose
and come out, so that when the usual pull is applied to either knob the removeable
knob is drawn off the spindle, or the fixed knob draws the spindle out of the other
knob according to which side of the door the pull comes from.
To overcome this defect various devices more or less complicated have been
used.
The object of my invention is to effect this purpose in a reliable manner by a
simple combination of parts in which the use of screw pins passing through the
neck of the knob is dispensed with.
My invention consists of the following principal parts, vi. A knob and square
spindle cast together in one piece and inserted through the door from one side, a
rose screwed to the door at the other side, and a knob which fits onto the end of
the spindle and is interlocked by the rose. The rose which consists of a disc of
metal of the usual pattern with screw hole piercings round the edge, is furnished at
the back with a projection which forms a small boss round the central hole, through
which the spindle passes; this boss is internally screwed or tapped through to serve
as a nut to the spindle which is correspondingly furnished with a thread to fit it.
As the rose is rigidly secured to the door, and the spindle can only turn a part of
the circle cither way, being square in section to actuate the catch of the door, it
will be seen that when once the rose has been screwed onto the spindle and secured
in position to the door, the spindle with its fixed knob cannot be unscrewed but will
be retained in position in the lock. The spindle projects through the door beyond
the rose and enters the detached knob at the other side, which knob is interlocked
in position by a hooded or hollow flange which surrounds the central part of the
rose which forms the seat of the foot or pummel end of the knob, which is free to
turn in its scat but cannot be withdrawn therefrom.
Dated this 3rd day of June 1890.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Securing Door Knobs to their
Spindles.
I, WILLIAM COCKBURN, of 16, Cargo Fleet Road, Middlesbrough, in the
County of York, Foreman Joiner, 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 :-
My invention relates to securing door knobs to their spindles and consists in a

page_text: simple and reliable mode of attaching, the removable knob to the spindle and also
of retaining the spindle and the fixed-knob.in position until released by unscrewing
the rose from the door and off the spindle.
In screwing door knobs to their spindles screw pins are often screwed through the
neck of the knob and let into the spindle which screw pins are found in practice to
get loose and come out so that when the usual, pull is applied to either knob the
removable knob is drawn off the spindle or the fixed knob draws the spindle out of
the other knob according to which side of the door the pull' comes from, to
overcome this defect various devices more or less complicated have been tried.
The object of my invention is to secure the removable knob in a reliable manner
by the use of a combination of parts in which a complication of details or the use
of the screw pins passing through the neck of the knob is dispensed with.
In effecting the purposes of my invention three principal parts are combined and
fitted to operate together in the manner hereinafter described viz.: a knob and
spindle cast or otherwise permanently united together in one piece in the usual
manner a specially constructed rose and spindle to suit which are screwed together
like a bolt and nut and a removable knob interlocked in its seat on the rose in
combination with which it is only removable from the spindle as the rose is
unscrewed therefrom.
And in order that my invention may be fully understood I will now refer to the
accompanying drawings in which my improved details of construction for securing
door knobs to their spindles are illustrated in the figures.
In Figure the two knobs al a² spindle and rose call combined and fitted
together in accordance with my invention are illustrated in part sectional view
secured in position through a door. Figures 2 and 3 illustrate the removable
knob a² and rose e detached or unscrewed from the spindle of the fixed knob at.
Figures 4 and 5 are details in section and plan respectively of the rose whilst
Figure 6 represents the pummel end or seat of the removable knob a² with a square
hole for admitting the end of the spindle. The rose resembles roses of the
ordinary kind in being secured to the door by screws, screwed into the wood
through screw hole piercings round the edge of the dise and also in being
furnished with a hooded flange e² to interlock the knob a² in the manner shown in
Figure 1 which leaves the said knob free to turn in its seat as the spindle turns.
As a novel addition to these features a rose constructed for the purposes of my
invention is furnished at the back with the hoss which is screwed or tapped
internally to screw on to the spindle and penetrates the wood of the door. in
the manner shown in Figure 1. The use of the boss c³ is attended with these
advantages the boss by being internally screwed or tapped affords a good
female screw or nut for the spindle to turn in, and as the spindle can only turn
part of a circle either way in consequence of its connection with the latch or
lock it obviously cannot be withdrawn from the door except by unscrewing the
rose from the other side.
Side strains on the spindle are communicated direct to the wood of the door
immediately round the boss instead of being transmitted to the securing
screws round the disc of the rose which are obviously less suited for the
purpose,,added to which the boss ³ can be made to share the torsional strain due
to turning the spindle by fitting it tight enough into the wood, which torsional
strain has hitherto been wholly transmitted to the small securing screws d. The
spindle is of ordinary sectional size with the part screwed with a full thread to
work smoothly in the boss of the rose like a bolt in a nut and the part 2 which
enters the knob a² is reduced to a square in the manner shown so that the spindle
is turned by either. knob to work, the catch of the lock or latch as wanted.
In adjusting and attaching the moveable knob a² to the spindle 6 the spindle is
drawn into position by screwing on the rose, as the rose is screwed on to the spindle
the knob a follows it until the rose and spindle are drawn into position. The
rose is then secured by the securing screws d and all is then fixed and ready
for use.

page_text: Having now clearly described and ascertained the nature of my said invention,.
and in what manner the same is to be performed, what I claim is :-
:-
Firstly In securing door knobs to their spindles, the use of a rose constructed
to interlock the removable knob to its seat at one side and furnished with a boss at
the other side to serve as a nut for screwing on to and retaining the spindle in position
in the manner and for the purpose as hereinbefore described and illustrated in the
accompanying drawings.
Secondly-The use of a spindle of the ordinary sectional size with part of it
screwed with a full thread to work smoothly in the rose like a bolt in a nut with
the part beyond reduced to a smaller square to fit the removable knob as and for
the purposes as herein before described and illustrated in Figures 1 and 3 of the
accompanying drawings.
Thirdly The combination of the knobs a' a² the spindle 6 and the rose c con-
structed fitted and operating together substantially as described with reference to
the accompanying drawings.
1001
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.