Improvements in Tool Steel Bars.
Year: 1892

page_text: Date of Application, 8th Sept.. 1892'
Complete Specification Left; 5th June, 1893-Accepted, 15th July, 1893
Improvements in Tool Steel Bars.
I WILLIAM FREDERICK BEARDSHAW Baltic Steel Works, Sheffield, Steel
Manufacturer, do hereby declare the nature of this invention to be as follows:-
According to this invention tool steel bars are made of a star section in various
sizes. The advantage of using this profile of steel for chisels, rimers, drills, and
other tools, is that the tools do not require to be forged, but merely ground by
stone or emery wheel, thus reducing the labour and cost of manufacture while in
many cases the tools are less than half the weight of tools made from ordinary
steel bars.
Dated this 8th day of September 1892.
SHIRLEY BOWDEN,
33, Southampton Buildings, Holborn, London, Agent for Applicant.
I, WILLIAM FREDERICK BEARDSHAW, Baltic Steel Works, Sheffield, Steel
Manufacturer, 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:-
According to this invention tool steel bars are made of a star section in various
sizes. The advantage of using this profile of steel for chisels, rimers, chills and
other tools, is, that the tools do not require to be forged, but merely ground by
stone or emery wheel, or turned up in a lathe, according to the nature of the tool
being manufactured; thus reducing the labour and cost of manufacture, while in
many cases the tools are much lighter than tools made from ordinary tool steel
bars.
The accompanying drawing shews a view in section of a tool steel bar made
according to my invention. a. a' are the radial ribs of such bar, those marked a
being made stouter than those marked a', in order to grind the steel to a cutting
edge, either with a light or heavy backing, and in the case of a chisel to allow of
the same being ground to a cross-cut cutting edge, with as little waste of material
as possible. is the core.
If desired however all the ribs may be of a uniform size. The diameter across
from one end to the other of such ribs may vary according to requirements.
A distinctive feature of my invention is that the radial ribs are not tapered, but
are of a uniform substance throughout, which possesses the advantage of consider-
ably reducing the amount of machining required when manufacturing rimers and
other similar tools from tool steel bars made according to my invention.
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 ;
As a new article of manufacture a tool steel bar of a star section, having radial
ribs of a uniform substance throughout, such ribs being either alternately broad

page_text: and narrow, as shewn in the accompanying drawing, or of one uniform size, all
substantially as hereinbefore set forth.
Dated this 5th day of June 1893.
SHIRLEY BOWDEN,
33, Southampton Buildings, London, W.C., Agent for Applicant.

page_text: Date of Application, 8th Sept.. 1892
Complete Specification Left, 5th June, 1893-Accepted, 15th July, 1893
Improvements in Tool Steel Bars.
I WILLIAM FREDERICK BEARDSHAW Baltic Steel Works, Sheffield, Steel
Manufacturer, do hereby declare the nature of this invention to be as follows:
-
According to this invention tool steel bars are made of a star section in various
sizes. The advantage of using this profile of steel for chisels, rimers, drills, and
other tools, is that the tools do not require to be forged, but merely ground by
stone or emery wheel, thus reducing the labour and cost of manufacture while in
many cases the tools are less than half the weight of tools made from ordinary
steel bars.
Dated this 8th day of September 1892.
SHIRLEY BOWDEN,
33, Southampton Buildings, Holborn, London, Agent for Applicant.
Improvements in Tool Steel Bars.
1, WILLIAM FREDERICK BEARDSHAW, Baltic Steel Works, Sheffield, Steel
Manufacturer, 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 :-
According to this invention tool steel bars are made of a star section in various
sizes. The advantage of using this profile of steel for chisels, rimers, chills and
other tools, is, that the tools do not require to be forged, but merely ground by
stone or emery wheel, or turned up in a lathe, according to the nature of the tool
being manufactured; thus reducing the labour and cost of manufacture, while in
many cases the tools are much lighter than tools made from ordinary tool steel
bars.
The accompanying drawing shews a view in section of a tool steel bar made
according to my invention. a. a are the radial ribs of such bar, those marked a
being made stouter than those marked a', in order to grind the steel to a cutting
edge, either with a light or heavy backing, and in the case of a chisel to allow of
the same being ground to a cross-cut cutting edge, with as little waste of material
as possible. is the core.
If desired however all the ribs may be of a uniform size. The diameter across
from one end to the other of such ribs may vary according to requirements.
A distinctive feature of my invention is that the radial ribs are not tapered, but
are of a uniform substance throughout, which possesses the advantage of consider-
ably reducing the amount of machining required when manufacturing rimers and
other similar tools from tool steel bars made according to my invention.
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;
As a new article of manufacture a tool steel bar of a star section, having radial
ribs of a uniform substance throughout, such ribs being either alternately broad

page_text: and narrow, as shewn in the accompanying drawing, or of one uniform size, all
substantially as hereinbefore set forth.
Dated this 5th day of June 1893.
SHIRLEY BOWDEN,
33, Southampton Buildings, London, W.C., Agent for Applicant.