Improvements in Metal Door Knobs and in the Manufacture of the same.
Year: 1899

page_text: Date of Application, 17th July, 1899-Accepted, 19th Aug., 1899
COMPLETE SPECIFICATION.
Improvements in Metal Door Knobs and in the Manufacture of the
same.
I, EDWIN ALFRED ALLEN, of 67 and 68, Mott Street, Birmingham, in the
County of Warwick, Brassfounder, 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 has for its object improvements in metal door knobs and in the
manufacture of the same by which I am enabled to form the whole of the spindle
neck of the knob from sheet metal instead of that portion being cast thus facilitat-
ing manufacture and effecting a saving in the weight of metal used.
In order that my invention may be clearly understood and more easily carried
into practise I have appended hereunto a sheet of drawings in which I have
shewn my improvements applied to an ordinary design of door knob and from
which its application to other forms of knobs will be readily understood.
Figure 1 is a section through a knob complete with my improvements embodied.
Figure 2 is an enlarged section of the spindle necking of the knob.
Figure 3 is a cross section through Figure 2 on line 1-2.
Figure 4 is a view of the socket connection.
Figure 5 is a view of the washer.
Figure 6 is an end view of the neck of the knob before being jointed.
Figure 7 is a similar view to Figure 2 but shewing a modification without the
use of washers.
In carrying my invention into effect I form the spindle neck of my knob in
two pieces D and D₁ the neck portion D being provided with the end having
a square hole, d in same slightly larger than the spindle E. The knob part I
is provided with a similar end d³ having a similar square hole to d' and the two
parts are then connected together by means of the socket A which has flanges a¹
at the one end and which is similarly cut at the other end to allow of the projec-
tions as being turned over to form similar flanges at the reverse end.
The two ends and bearing the holes being placed together a steel
washer B having a square hole 61 is placed upon the socket A and the socket then
inserted into the square holes d' after which another steel washer B is placed
over the socket the ends a³ of which are then pressed over the washer thereby
securing the two parts D and D¹ of the knob firmly together and at the same
time forming a square socket in which the spindle has a substantial square bearing
thus enabling the knob to be firmly mounted on the spindle in a simple cheap
and economical manner.
In some cases I may omit the steel washers B and turn the ends of my square
socket over against the ends d and d³ themselves but in most cases I prefer to
use a washer although I do not confine myself to those of steel.
The shape and design of the knob and spindle neck piece and the kind of metal
of which it is formed does not effect my improvement which can be readily applied
to any form or shape, and I may solder the joint between the end d and d³ in
addition to the attachment here before described.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
-
1st. In metal door knobs and in the manufacture of the same forming the
parts D and D¹ of sheet metal in combination with the socket A for attaching
the two parts together substantially as and for the purpose herein set forth and
illustrated.
2nd. In metal door knobs and in the manufacture of the same the attachments
of the parts D and D¹ together by the metal socket A substantially as and for the
purpose herein set forth and illustrated.
3rd. In metal door knobs and in the manufacture of the same the combination
of the two parts D and D' with the socket A and washers B substantially as and
for the purpose herein set forth and illustrated.
Dated thin 15th
fT.... 1900
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham.
LEWIS WM. GOOLD,
Agent for Applicant, 5, Corporation Street, Birmingham.