A Mould or Chill for Casting Turning Bars for Cycle Hubs.
Year: 1897

page_text: Date of Application, 10th Nov., 1897
PROVISIONAL SPECIFICATION.
A Mould or Chill for Casting Turning Bars for Cycle Hubs.
ARTHUR EGERTON HECKFORD, Berndorf Metal Works, Frederick Street, Bir-
mingham, England, Metal Manufacturer, do hereby declare the nature of this
invention to be as follows:-
The object of my invention is to provide means whereby the waste of material
and labour, incurred in machining cycle hubs from the solid cylindrical rod or
bar of metal, may be avoided.
To this end I make an iron mould or chill in two parts (as Figs. 1 and 2) which
when in use are fastened together in the usual way. Both parts or halves of this
mould or chill are recessed alike, so that the two when fitted together, will give
to the material poured into them a shape similar to the bar shown in Fig. 3. It
will be seen that the surface of this bar consists of alternate annular protuberances
and depressions which correspond roughly to the form of the finished hub (as at A
Fig. 3) and may approximate to it as nearly as is consistent with the production
of a sound casting. The peculiar internally curved form of the mould or chill
favours the arrangement of the metal on cooling and tends to prevent flaws or
fractures. The mould or chill may be constructed to cast a metal bar corre-
sponding to two or as many more hubs as may be found convenient. The mould
or chill is usually placed vertically with the " gate" at the top end when
being used. This invention is intended chiefly to apply to the casting of the white
metal alloy known as hecnum but may also be used for other metals or alloys
as far as it may be found suitable to their nature.
<
35
Dated this Ninth day of November 1807
A Mould or Chill for Casting Turning Bars for Cycle Hubs.
I, ARTHUR EGERTON HECKFORD, Manufacturer, of the Berndorf Metal Works,
Frederick Street, Birmingham, in the County of Warwickshire, 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:-
The object of my invention is to provide means whereby the waste of material
and labour incurred in machining cycle hubs or such like articles from the solid
cylindrical rod or bar of metal, may be avoided. To this end I make an iron
г.

page_text: mould or chill in two parts (as Figs. 1 and 2 in drawing left with Provisional
Specification) which when in use are fastened together in the usual way. Both
parts or halves of this mould or chill are recessed alike, so that the two when
fitted together will give to the material poured into them a shape similar to the
bar shown in Fig. 3. It will be seen that the surface of this bar consists of
alternate annular protuberances and depressions which correspond roughly to the
form of the finished hub (as at A Fig. 3) and may approximate to it as nearly as
is consistent with the production of a sound casting. The peculiar internally
curved form of the mould or chill favours the arrangement of the metal on cooling
and tends to prevent flaws or fractures. The mould or chill may be constructed
to cast a metal bar corresponding to two or as many more hubs or such like
articles as may be found convenient.
The mould or chill is usually placed vertically with the "gate" at the top end
when being used.
This invention is intended chiefly to apply to the casting of the white metal
alloy known as "hecnum" but may also be used for other metals or alloys as
far as it may be found suitable to their natures.
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:-
A mould or chill recessed in the manner herein described, for the purpose of
casting a metal bar of similar configuration to that herein described.
Dated this Eighth day of August 1898.
ARTHUR EGERTON HECKFORD.