Improved Means of Attaching Door Knobs, Handles, and the like to their Spindles, applicable also for Fastening or Joining other articles.
Year: 1892

page_text: Date of Application, 26th July, 1892
Complete Specification Left, 25th Apr., 1803-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION,
Improved Means of Attaching Door Knobs, Handles, and the like to
their Spindles, applicable also for Fastening or Joining other
articles.
I, THOMAS RICHARD BIRD of 49 and 50 Pear Tree Road, Derby in the County
of Derby, Publican do hereby declare the nature of this invention to be as
follows:-
This invention relates to an improved method of attaching or fixing the knobs
or handles of doors and the like to their spindles and may also be used for fixing
knobs on bedsteads and fixing parts of certain articles together such as oil lamps,
pedestal gas stands, walking sticks, umbrellas, &c., &c.
I will describe my invention as applied to the fixing of door knobs to their
spindles. I form the spindle of any suitable section but preferably square, the
sides being roughened or corrugated if desired, over this spindle I pass a screw
plug whose internal section is of a suitable form for firmly gripping the spindle and
the outer side of which is threaded, this threaded portion screws into the neck of
the door knob and the outer end of the plug is thickened out somewhat so as to
compensate for any unevenness or variation in the thickness of the spindle or of
the internal diameter of the neck of the knob, the outer end of the said plug is also
slit so that when the spindle is pushed into or through the plug (which may have
its internal surfaces corrugated or otherwise roughened if desired) the knob is
turned or screwed round drawing in the plug until the spindle is firmly gripped by
the said plug which in turn is held by the threaded neck of the knob.
It will be seen that this method of attaching door knobs or handles to their
spindles is much more rigid than the old method of screwing a pin through the
neck of the knob into holes in the spindle and the position of the knob on the spindle
may be adjusted to a much greater nicety.
It is evident that this method of joining together different articles or parts of
same may be used for a variety of purposes as has been already mentioned.
Dated this 25th day of July 1892.
זוםעATT
W. SWINDELL,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improved Means of Attaching Door Knobs, Handles, and the like to
their Spindles, applicable also for Fastening or Joining other
articles.
I, THOMAS RICHARD BIRD of 49 and 50 Pear Tree Road, Derby in the County
of Derby, Publican, 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 :-
I will describe my invention as applied to the fixing of door knobs to their
spindles and in order that my said invention may be the more readily understood I
have caused to be annexed to this Specification a sheet of drawings the figures and
letters of reference marked upon which will be hereafter referred to,
Figure 1 being a vertical section through a pair of door knobs and spindle on
line a. a of Figure 2 shewing the application of my invention:
Figure 2 is a section through the spindle
on line b. b:
Figure 3 is a plan looking down shewing the spindle and plug to be hereafter
referred to, the knob in the Figures 2 and 3 being omitted.

page_text: I form the spindle A of any suitable section but preferably square the sides or
edges B being roughened, serrated, corrugated or threaded so as to present a
suitable gripping surface for the plug (to be hereafter described) and the end C
which passes into the knob may be threaded either on the edges or round the whole
periphery of the spindle if desired. Over the spindle A 1 pass a plug D of a
truncated cone section threaded externally at its narrow end E and having slits
such as at its larger end it may also be roughened in any suitable manner
internally if desired for the purpose of obtaining a better grip of the spindle.
The neck of the knob is threaded internally at G to engage with the threaded
end E of the plug D and may also be threaded at H to engage with the
threaded end of the spindle A. To fix the knob on the spindle the plug D
is pushed along the spindle to its proper position and the neck of the knob placed
over same and upon being screwed up, the plug D by the elasticity imparted to
it by means of the slits F firmly grips the spindle assisted by the serrated,
corrugated or roughened edges or faces of the said spindle A. and the knob is
held securely in position, it being further assisted by means of the threaded
portion engaging with the threaded end C of the spindle; I may however if
desired dispense with the threads at H and C and simply trust to the tightening
of the plug D upon the spindle A. I do not wish to make any claim for
serrating, corrugating, roughening or threading the said edges or faces of the
spindle such operation being already well known, except as to the application
of my invention. The rose I forms no part of my invention but is in general
use when fixing such knobs.
It will be understood that either or both door knobs may be fixed to the spindle
by these means although I have only shewn one of them to be so fixed on the
drawing.
It is evident also that this device may be used for fixing knobs on bedsteads or
fixing together the parts of certain articles such as oil lamps, pedestal gas stands,
the knobs or handles of walking sticks, umbrellas and the like although no particular
application of such is shewn on the accompanying sheet of drawings.
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
The improved method of attaching door knobs, handles and the like to their
spindles by means of a plug such as D being caused to grip the said spindle upon
the screwing up of the door knob over same either with or without the assistance
of the threaded portions H and C applicable also for fastening or joining other
articles substantially as described and illustrated.
Dated this 21th day of Anil 1802
W. SWINDELL,
Agent for the Applicant.