Improvements in and relating to the Manufacture of Knobs or. Mounts made from Sheet Steel or Iron.
Year: 1891

page_text: Date of Application, 21st Aug., 1891-Accepted, 26th Sept., 1891
COMPLETE SPECIFICATION.
Improvements in and relating to the Manufacture of Knobs or.
Mounts made from Sheet Steel or Iron.
I JOHN HENRY BIDDLE MANLY of the Century Works, Lombard 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 reference as hereinafter described to knobs or mounts such for
example as knobs or mounts used for supporting the rails of fenders and fire-dogs
or for the terminal of fireirons or for the large terminal knobs of metallic bedsteads
and the like, it is also applicable for door knobs and other similar purposes. Such
knobs or mounts are usually made by casting a brass knob, or by spinning a brass
blank the same being finished by turning and polishing.
I will describe my invention and the manufacture thereof in connection with
knobs used for supports for the rails of fenders such knobs being also applicable as
the large terminal knobs of metallic bedsteads which I illustrate by the accompanying
drawings:-
--
Figures 1 to 10 respectively, represent the various methods I employ in the
production of the aforesaid knobs or mounts.
Figure 1 shows a blank of sheet iron or steel, which by means of a stamping
process I shape into the forms shewn at Figures 2, 3, 4 & 5.
Figure 6 shows a cup shaped shell with the bur or flange a. removed.
Figure 7 shows the same cup shaped shell with the bottom edge b. slightly
cambered inwardly.
Figure 8 shows another stamping process with the sides drawn more into a
clavate shape, and Figure 9 shows the shell stamped into a spherical form.
I take a neck shown at Figure 10 which may be made of cast, cast-malleable or
wrought iron (and of any desired shape) and by means of suitable tools force the
spherical shaped shell Figure 9 over the upper flange c. of the neck and into the
recess d. and it is thus held firmly therein as shown at Figure 11. the neck having
a screw socket, f. The knob and neck are afterwards turned and polished in a
lathe or polishing machine, one or more holes being drilled into the knob as shown
in Figure 12 at h. & i.
The knob or mount having been thus formed may either be bronzed or coated
with brass, copper, nickel or any other metal or alloy by the process known as
electro depositing.
Figure 13 shows my improved knob or mount applied as a support for a fender
rail.
Figure 14 shows the same knob applied as a terminal knob to a metallic
bedstead.
I have not thought it necessary to show my improved knob applied to other
articles as it differs in no essential respect to those shown at Figures 13 and 14.
Instead of producing the spherical shell Figure 9 by a stamping process as
before described I may employ a spinning or a drawing through process for the
production of the aforesaid articles.
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 :-
The improvements in and relating to the manufacture of knobs or mounts herein-
before described and illustrated by the accompanying drawings which consist of
making a knob or mount from a blank of sheet steel or iron as shown at Figures 1,

page_text: and a cast, cast-malleable or wrought iron neck as shown at Figure 10 or its
equivalent constructed and combined substantially as described and illustrated.
Dated this 21st day of August 1891.
RAYNER & CASSELL,
37, Chancery Lane, London, W.C., Agents for the Applicant.