Improvements in the Manufacture of Balls, Knobs, and Metal Mounts for Attachment to Bedsteads, Cruet-stands, Window and Door Furniture, and for like purposes.
Year: 1891

page_text: Date of Application, 2nd May, 1891
Complete Specification Left, 2nd Feb., 1892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Balls, Knobs, and Metal
Mounts for Attachment to Bedsteads, Cruet-stands, Window and
Door Furniture, and for like purposes.
We, JOHN EMPSON, and JOHN HEWITT, trading as Wilkins & Wright,
of 58 Graham Street, in the City of Birmingham, Manufacturers, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the manner in which we construct metal balls, knobs
and mounts for attachment to bedsteads, cruet-stands, window fastenings, bolts and
door fastenings, and for other like purposes, whereby we are enabled to construct a
more substantial attachment and to provide a more durable ornament or support
than is at present possible with the existing systems of construction now generally
adopted.
In carrying our invention into effect we construct a ball or knob for attachment
as a mount to a bedstead by means of the internal thread formed within the hole at
the underside of the hollow ball, in such a manner that the thread portion or screw
of our improved ball is of greater depth or length than can be produced for the
same cost of manufacture by the existing methods of construction and manufacture
now in use. We employ two kinds of metal for making our improved balls and
mounts, the inner one being less costly and of greater strength than the outer one
which we employ as a coat or external face for the more common lining. Thus
we arrange two discs or plates of metal one being iron or steel, and the other
for the outer surface brass, and we work these two separate metal discs together
by any ordinary and well known system of pressing and forming by dies, punches,
and usual tools, into the necessary configuration required for the ball or mount.
We keep the two discs of metal one upon the top of the other and by passing
them through the forming dies necessary for producing the required external
configuration we are enabled to obtain a greater thickness or body of metal to
receive the screw for enabling attachment to be made to the similarly screwed end
of any rod, than is at present produced when employing only one kind of metal
for this purpose.
The harder or stronger metal which we employ for our lining permits of a very
much stronger ball being made with the same thickness of metal than would be
produced by employing the exterior metal alone, having the same total thickness of
the combined metals.
We sometimes arrange two sheets or strips of metal one being for example, brass,
and the other steel, and these two sheets or strips we pass through the cutting out
presses or machines together, so that the discs or cups are formed of the same size,
one with the other at the same process or operation of working. Or if desired we
may form the two cups separately by separate tools and slip the one on to the
other before closing up. By whatever system we construct the two cups forming
respectively the lining and external coating we close up with one slipped over the
other by suitable tools as usually employed in the manufacture of metal balls or
similar mounts. We employ the same system of working and forming the combined
metal balls when employing german silver and iron or steel, copper and iron or
steel, or any other desired combination of internal and external cases for our mounts
or knobs, of any required configuration, for any particular purpose as employed
when constructing balls having an iron or steel lining, and a brass outer case as
hereinbefore described for application to bedsteads; and we polish, burnish or
otherwise increase the ornamental appearance of the exterior by any usual well
11

page_text: known method or process employed for finishing the existing metal balls, knobs
and mounts, as generally and usually constructed.
We may likewise construct our lined balls by closing in both ends of a cased
tube and this method of operation sometimes proves convenient as in the cases
where a mount of spherical or approximately spherical form is required with holes
opposite each other."
D1
CM 1001
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Balls, Knobs, and Metal
Mounts for Attachment to Bedsteads, Cruet-stands, Window and
Door Furniture, and for like purposes.
We, JOHN EMPSON, and JOHN HEWITT, trading as Wilkins and Wright,
of 58, Graham Street, in the City of Birmingham, Manufacturers, 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—
This invention relates to the manner in which we construct metal balls, knobs
and mounts for attachment to bedsteads, cruet-stands, window fastenings, bolts
and door fastenings, and for other like purposes, whereby we are enabled to
construct a more substantial attachment and to provide a more durable ornament or
support than is at present possible with the existing systems of construction now
generally adopted.
In carrying our invention into effect we construct a ball or knob for attachment
as a mount to a bedstead by means of the internal thread formed within the hole
at the underside of the hollow ball, in such a manner that the thread portion or
screw of our improved ball is of greater depth or length than can be produced for
the same cost of manufacture by the existing methods of construction and manu-
facture now in use. We employ two kinds of metal for making our improved balls
and mounts, the inner one being less costly and of greater strength than the outer
one which we employ as a coat or external face for the more common lining.
Thus we arrange two discs or plates of metal one being iron or steel, and the other
for the outer surface brass, and we work these two separate metal discs together by
any ordinary and well known system of pressing and forming by dies, punches,
aud usual tools, into the necessary configuration required for the ball or mount.
We keep the two discs of metal one upon the top of the other and by passing
them through the forming dies necessary for producing the required external
configuration we are enabled to obtain a greater thickness or body of metal to
receive the screw for enabling attachment to be made to the similarly screwed
end of any rod, than is at present produced when employing only one kind of
metal for this purpose.
The harder or stronger metal which we employ for our lining permits of a very
much stronger ball being made with the same thickness of metal than would be
produced by employing the exterior metal alone having the same total thickness of
the combined metals.
We sometimes arrange two sheets or strips of metal one being for example
brass and the other steel, and these two sheets or strips we pass through the cutting
out presses or machines together, so that the discs or cups are formed of the same
size one with the other at the same process or operation of working. Or if desired
we may form the two cups separately by separate tools and slip the one on to the
other before closing up. By whatever system we construct the two cups forming
respectively the lining and external coating we close up with one slipped over the
other by suitable tools as usually employed in the manufacture of metal balls or
.
.

page_text: similar mounts. We employ the same system of working and forming the combined
metal balls when employing German silver and iron or steel, copper and iron or
steel, or any other desired combination of internal and external cases for our mounts
or knobs of any required configuration for any particular purpose as employed when
constructing balls having an iron or steel lining and a brass outer case as herein-
before described for application to bedsteads; and we polish, burnish or otherwise
increase the ornamental appearance of the exterior by any usual well known
method or process, employed for finishing the existing metal balls, knobs and
mounts as generally and usually constructed.
We may likewise construct our lined balls by closing in both ends of a cased
tube, and this method of operation sometimes proves convenient as in the cases
where a mount of spherical or approximately spherical form is required with holes
opposite each other.
Referring to the accompanying sheet of drawings in which Figures 1 to 10
illustrate the application of our invention Figure 1 is a plan and Figure 2 is a
transverse section in which the sheet of metal a is placed
the sheet b. The
combined sheet is then cupped up as shown in Figure 3 where a forms the inner
layer and 6 the outer layer. In Figure 4 the cupping has been carried a stage
further. In Figure 5 the open end of the cup has been closed in partly by a closing
tool acting in a suitable press in a well known manner. In Figure 6 and Figure 7
the closing in operation has been completed and a finished ball or sphere is produced
having a layer of thicker and cheaper metal a within the sphere while a more
expensive layer b is without. Figures 8, 9 and 10 are sectional elevations of
mounts we produce by cupping and swaging in any ordinary manner.
In this manner we produce balls or spheres as herein before described which have
brass or other desirable metal without and a cheaper metal within.
The balls so produced are very strong and durable and the thick layer of metal
takes a screw thread in an effective manner.
The cups, Figures 3, and 4, may be formed separately in the two metals, and
then one cup slipped within the other before the closing in process (Figure 5)
begins.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
(1.) A hollow ball or sphere manufactured from two discs of metal, such as
brass and steel or other pair of suitable metals in such manner as to present an
external surface of the desired more expensive metal while the inner layer is
composed of the less expensive metal, substantially as and for the purposes herein-
before described and illustrated in the accompanying drawings.
(2.) The manufacture of hollow balls or spheres from two metal discs by the
combined processes of cupping and closing in substantially as hereinbefore described
and illustrated in the accompanying drawings.
(3.) The manufacture of hollow mounts other than of a regular spherical form
from two metal discs by the combined process of cupping and swaging or spinning
performed in any well known manner substantially as and for the purposes herein
described and as illustrated in Figures 8, 9 and 10 of the accompanying drawings.
Dated this 1st day of February 1892.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.