Improvements in the Manufacture of Cutting Tools, Turning Tools, and other similar Articles
Year: 1892

page_text: Date of Application, 3rd Dec., 1892
Complete Specification Left, 18th Aug., 1893-Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cutting Tools, Turning Tools,
and other similar Articles.
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 a cutting tool, turning tool, or other similar tool is
made of two bars of rolled or drawn steel of suitable section, one of which bars
forms the tool holder while the other forms the cutting or other tool. If desired
the bar forming the tool holder may be made of soft iron or any other suitable
metal or material other than rolled or drawn steel. Preferably however both bars
are made of rolled or drawn steel to allow of their being used interchangeably
either as the tool holder or cutting or other tool as occasion may require.
Dated this 3rd day of December 1892.
SHIRLEY BOWDEN,
33, Southampton Buildings, London, W.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Cutting Tools, Turning Tools,.
and other similar Articles.
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 a cutting tool, turning tool or other similar tool, is
made of two bars of rolled or drawn steel of suitable section one of which bars
forms the tool holder or packing piece while the other forms the cutting or
other tool.
If desired the bar forming the tool holder or packing piece may be made of soft
iron, or any other suitable metal or material, other than rolled or drawn steel.
The advantage of this form of tool holder or packing piece is that it allows the
cutting tool to be made of a sufficient size to absorb the heat generated by such tool
when in use, and thus preserves the temper of the tool.
Preferably however both bars are made of rolled or drawn steel to allow of their
being used interchangeably either as the tool holder or packing piece, or cutting or
other tool, as occasion may require.
In the accompanying drawings
Figures 1, 2, shew views in front and back elevation of the bar forming the
cutting tool. Figures 3, 4, shew similar views of the bar forming the tool holder
or packing piece. Figures 5, and 6, shew similar views of the two bars when put
together, with the cutting tool in position for cutting. Figure 7 is a transverse
section of the bars in such position taken on the line X. X. Figure 5.
Similar letters of reference indicate corresponding parts throughout the drawings.
A is the bar forming the cutting tool the fore end whereof is dressed and ground
to form a cutting edge a. This bar is made heavier than the bar forming the tool
holder or packing piece, so that, it may be sufficiently strong to make the first or
rough cut. B is the bar formning the tool holder or packing piece, and is shewn in
the drawings with a cutting edge 6 formed on its fore end, so that when desired
such tool holder or packing piece, may be used as a cutting tool to make the second

page_text: or finishing or any other cut. If preferred however such cutting edge, may be
dispensed with. Each bar has suitable grooves formed therein to allow of the bars
fitting one in the other as shewn in Figures 5, 6, and 7. When so fitted the bars
are clamped together, and placed in the lathe, thus forming a cutting tool, either
bar whereof may be used for cutting purposes as occasion may require.
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:
1. A cutting tool consisting of two bars of rolled or drawn steel of suitable
section, each provided with a cutting edge, and either of which may be used inter-
changeably as a cutting tool, or tool holder or packing piece, as may be desired, all
substantially as herein before described and shewn.
2. A cutting tool consisting of two bars of suitable section, one whereof forms the
cutting tool, and is made of rolled or drawn steel, and provided with a cutting
edge, while the other is made of soft iron or any other suitable metal or material,
and forms the tool holder or packing piece, all substantially as hereinbefore
described.
Dated this 18th day of August 1893.
SHIRLEY BOWDEN,
33, Southampton Buildings, London, W.C., Agent for Applicant.