Improvements in Fastenings for Securing Door Knobs to their Spindles and for other Purposes.
Year: 1889

page_text: Date of Application, 5th Dec., 1889
Complete Specification Left, 11th Feb., 1890-Accepted, 12th Apr., 1890
.PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Securing Door Knobs to their
Spindles and for other Purposes.
I, ROBERT JOSEPH HOOPER-RASTRICK of No. 30 Lavender Gardens, Lavender
Hill, Wandsworth, in the County of Surrey, Gentleman, do hereby declare the nature
of this invention to be as follows:-
My invention relates to an improved means of securing the knobs or handles of
doors to the shafts or bars which pass through the ordinary locks, and actuate the
mechanism, and has for its object to ensure, by extremely simple means, perfect
attachment between the handle and shaft or bar without risk of becoming loosened by
vibration or other causes.
In carrying out my invention, I prefer to form screw threads upon the ends of the
shaft or bar, upon which are screwed spiral wires, into the outer ends of which latter
take screws rigidly attached to or forming part of the knobs or handles.
On turning the handles from left to right it is evident that there will be a tendency
to tighten the spirals which form sleeves upon the screws, but on turning the handles
from right to left, the tendency of the spirals to expand, causing the ends thereof to
press with greater force against the inner flat surfaces of the knobs or handles in
the one case, and against the shoulders of the square shaft or bar; thus allowing the
knobs or handles to be turned in either direction without the possibility of becoming
loosened or detached.
In order to remove one of the knobs or bandles, the extremity of one of the
spirals should be raised or eased from its seat, when the knob or handle may be
removed.
The spiral wire above described may be applied with advantage for securing the
handles of brooms, garden implements and for a variety of other purposes in which a
speedy and secure attachment is deemed desirable.
Dated this 24th day of November 1889
EDGAR GEORGE,
27, Bow Lane, Cannon Street, E.C., Agent:
COMPLETE SPECIFICATION.
Improvements in Fastenings for Securing Door Knobs to their
Spindles and for other Purposes.
1; ROBERT JOSEPH HOOPER-RASTRICK of No. 30 Lavender Gardens, Lavender
Hill, Wandsworth, 'in the County of Surrey, Gentleman, 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 improved means for securing the knobs or handles of doors
to the shaft, bar or spindle which passes through the ordinary lock and actuates the
mechanism, and has for its object to ensure, by the simplest means, perfect attachment
between the handle and shaft, bar or spindle without the risk of becoming loosened by
vibration or other causes.
Referring to the accompanying drawings Figure 1 represents two door handles
secured to the shaft, bar or spindle in the manner to be hereinafter more particularly
described. Figure 2 shows a door knob or handle having a screw attached thereto,
and Figure 3 is a representation of a spring (drawn to enlarged scale) employed for
securing the knobs or handles to their shafts, bars or spindles.

page_text: According to my invention I prefer to turn down the ends of the square shaft, bar
or spindle A and form screw threads thereon, upon which are screwed spiral wires B
(Figures 1 and 3) into the free outer ends of which latter take screws C (Figure 2)
rigidly attached to or forming part of the knob or handle D.
On turning the handles from left to right, it is evident that there will be a tendency
to tighten the spirals B, which form sleeves upon the screws, but upon turning the
handles from right to left; the tendency of the spiral will be to expand, causing the
ends thereof to press, with greater force against the inner flat surface a of the shields
or of the knobs or bandles D in the one case, said inner surface serving as a seat
for the ends,c of the spiral, and against the shoulders of the square shaft, bar or
spindle A, thus allowing the knobs or handles to be turned in either direction without
the possibility of becoming loosened or detached.
In order to ensure greater security against the turning of the spiral wire at the
shoulder b, I may bend the end of the wire as at d (Figures 1 and 3) and force such
bent part into a recess or groove formed in one of the square faces of the shaft, bar
or spindle 'A.
,
**
In order to remove one of the knobs or handles D, the extremity c of one of the
spirals B should be raised or eased from its seat, when the knob or handle can be
unscrewed with ease.
The spiral wire above described may be applied with advantage for securing the
handles of brooms, garden implements, and for a variety of other purposes in which
a speedy and secure attachment is deemed desirable.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In securing the knobs or handles of doors to their spindles the employment of a
spiral wire taking on to screws substantially in the manner and for the purpose herein
described and shown in the accompanying drawings.
Dated this 3rd day of Februar
1000
LONA
EDGAR GEORGE,
27, Bow Lane, Cannon Street, E.C., Agent.