Improvements in Securing Door Knobs to their Spindles.
Year: 1893

page_text: Date of Application, 14th June, 1893
Complete Specification Left, 2nd Nov., 1893—Accepted, 6th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Securing Door Knobs to their Spindles.
I, WILLIAM NEWBY of 45 Warick Street, Rotherham, in the 'County 'of
York, Boiler Inspector, do hereby declare the nature of my invention to be as
follows:-
This invention relates to improvements in the method of and means for securing
door knobs upon their axles or spindles, without the use of the small screws, which
so often become loose, drop out, and are lost.
I propose to have the spindle carrying the fast knob made square or of other
shape such as hexagon or octagon and prepared with a screw thread.
Upon this thread I screw a washer which is tapped to correspond, and which is
adjusted against the larger washer or "rose," and against this screwed adjustable
washer I place a divided spring washer with one end turned up to form a catch,
and its centre hole made to correspond with and fit upon the spindle so that it
cannot turn round.
The loose knob is tapped to fit upon the spindle, and the face that will come in
contact with the spring washer is cut radially to form a number of teeth, say for
example six or eight.
The loose knob is then screwed up and its radial ratchet teeth will come in
contact with and engage with the turned up end of the spring washer, passing over
it, until it is screwed up tight against the screwed washer first mentioned.
The spring washer will prevent the knob becoming unscrewed.
Instead of cutting the teeth in the knob itself, a separate disc with radial teeth
may be used and be secured to the knob; this arrangement would be required in the
case of earthenware or wood knobs.
As a modification, a non-rotating washer with radial teeth may be placed on the
spindle after the screwed washer, and the knob be prepared with a spring catch.
Dated the 13th day of June 1893.
.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Securing Door Knobs to their Spindles.
I, WILLIAM NEWBY, of 45 Warwick Street, Rotherham, in the County of
York, Boiler Inspector, 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 improvements in the method of and means for securing
door knobs upon their axles or spindles, and my object is to dispense with the use
of the small screws, which so often become loose, drop out, and are lost..
My invention consists in a method of fastening the loose knob by means of a
ratchet faced knob, a spring catch washer and a backing up screw washer.
Referring to the accompanying sheet of drawings:-
Figure 1 illustrates my invention with all the parts in position.
Figure 2 shows a face view of the ratchet teeth formed on the knob or on a
separate disc attached to it.

page_text: Figure 3 shows my spring catch washer and my backing up washer in position
on the screwed spindle.
Figure 4 is a plan of the spring catch washer and spindle.
In carrying my invention into effect I attach the fast knob B (Figure 1) to a
spindle C of square or other shape such as hexagon or octagon the said spindle
being prepared with a screw thread. Or the screwed spindle may be cylindrical
and have a groove or key way. Upon this thread I screw a washer E (Figures 1
and 3) which tapped to correspond. and adjusted against the larger washer or
Against this screwed adjustable washer E I place a divided spring washer F
with one end of the cut spring part turned up to form a catch, and the centre
hole of the said spring washer made to correspond with and fit upon the spindle so
that the washer cannot turn round.
66 rose ".D.
+
The loose knob A is tapped to fit upon the spindle C, and the face that comes
in contact with the spring washer F is cut radially to form a number of teeth G¹
(Figures 1 and 2,) say for example, six or eight.
Eight teeth are shown in the drawing.
The loose knob A is then screwed up and its radial ratchet teeth G¹ come into
contact with and engage with the turned up end F¹ of the spring washer F,
passing over it, until it is screwed up tight against the screwed washer E first
mentioned.
The spring washer by its projecting spring part F¹ prevents the knob A becoming
unscrewed.
Instead of cutting the teeth G¹ in the knob itself a separate disc G with radial
teeth G¹ may be used, and be screwed to the knob A; this arrangement is required
in the case of earthenware or wood knobs.
As a modification, a non-rotating washer with radial teeth may be placed on
the spindle after the screwed washer E and the knob be prepared with a spring
catch.
The spring washer may be constructed in several ways but I prefer the simple
_method clearly shown at Figure 4 of cutting a spring edge F¹ and turning it up to
form the spring catch.
By my invention I provide a very secure knob fastening without the use of small
screws or other inconvenient devices.
When it is desired to unscrew the knob A, it is only necessary to depress the
spring edge F¹ by inserting the end of a screw driver.
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 :-
:-
1. The method of securing a knob without small screws by a device comprising
a screwed backing washer; a spring catch washer or a ratchet tooth washer sliding
on the spindle but not turning on it; a disc or other surface having ratchet teeth
formed on or attached to the knob engaging with the spring catch of the spring
catch washer or a spring catch attached to the said knob surface all arranged and
operating substantially as and for the purposes herein before described, reference
being had to the accompanying drawings.
2. The device for securing a door knob to its spindle without small screws, as
hereinbefore described with reference to the accompanying drawings.
Dated this 2nd day of November 1893.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents for the Applicant.