Improvements in or Connected with the Manufacture of Umbrella Ribs and Stretchers.
Year: 1886

page_text: Date of Application, 26th Oct., 1886.
Complete Left, 24th June, 1887.
Complete Accepted, 26th July, 1887
PROVISIONAL SPECIFICATION.
Improvements in or Connected with the Manufacture of Umbrella
Ribs and Stretchers.
I WILLIAM CORDER, of the firm of Corder and Turley, of Allison Street Works
Birmingham in the county of Warwick, Manufacturers do hereby declare the nature
of this invention to be as follows:-
This invention relates to treating what are known in the umbrella rib and stretcher
trade as "soft ribs and stretchers," that is to say, those ribs and stretchers which after
having been submitted to the usual hardening and tempering processes are found to
be soft. Such soft ribs have in some cases been partly utilized by being cut down
into stretchers but frequently are wholly waste and in all cases result in a considerable
loss.
Now my invention consists in treating such soft ribs and stretchers whereby they
are rendered fit to be properly hardened and tempered.
For this purpose the soft ribs and stretchers are placed in layers or otherwise in a
converter and between the ribs and stretchers I distribute powdered animal charcoal
or other suitable material or materials employed in the manufacture of steel. The
converter is heated in any suitable manner until the soft ribs and stretchers are suffi-
ciently treated which may be ascertained by the use of iron or steel wires or by other
suitable means.
1
1
100%
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in or Connected with the Manufacture of Umbrella
Ribs and Stretchers.
I, WILLIAM CORDER, of the firm of Corder and Turley, of Allison Street Works,
Birmingham, in the county of Warwick, 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 treating what are known in the umbrella rib and stretcher
trade as "soft ribs and stretchers" that is to say, those ribs and stretchers (or cut
lengths of steel to be made into ribs and stretchers) which after having been
submitted to the usual hardening and tempering processes are found to be soft. Such
soft ribs have in some cases been partly utilized by being cut down into stretchers
but frequently are wholly waste and in all cases result in a considerable loss.
Now my invention consists in treating such soft ribs and stretchers (or cut lengths
of steel) whereby they are rendered fit to be properly hardened and tempered.
For this purpose the soft ribs and stretchers (or cut lengths of steel) are placed in
layers or otherwise in a "converter" and between the ribs and stretchers (or cut
lengths of steel) I distribute powdered animal charcoal or other suitable material or
materials employed in the manufacture of steel. The converter is heated in any
suitable manner until the soft ribs and stretchers (or cut lengths of steel) are
sufficiently treated which may be ascertained by the use of iron or steel wires or by
other suitable means of testing.
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. Treating what are known as soft umbrella ribs and stretchers (or soft lengths of
cut steel to be made into ribs and stretchers) by subjecting them to a converting
process whereby they are rendered fit to be properly hardened and tempered sub-
stantially as herein before described.
2. The process for treating soft umbrella ribs and stretchers or soft lengths of cut
steel to be made into ribs and stretchers as and for the purpose hereinbefore described.
Dated the 24th day of June 1887.
G. F. REDFERN,
4, South Street, Finsbury, London,
Agent for the Applicant.