A New or Improved Tool for Use in Lathes and the like for Turning Rods and Bars.
Year: 1895

page_text: Date of Application, 20th Aug., 1895
Complete Specification Left, 21st May, 1896-Accepted, 27th June, 1896:
PROVISIONAL SPECIFICATION.
A New or Improved Tool for Use in Lathes and the like for
Turning Rods and Bars.
I, SAMUEL PAUL LEHMANN of 22 South Villas, Camden Square, N.W.
Mathematical Instrument Maker, do hereby declare the nature of this invention
to be as follows:-
The purpose of this invention is to provide a new or improved tool to be used
in connection with a lathe or the like for cutting cores upon rods or bars of steel'
or other metal or material. The said tool comprises a stock or handle of any
suitable shape having one or more handle portions. In the head of the stock is a
hole preferably cylindrical for receiving any one of a series of dies. Each die
has in its centre a passage way of the diameter of the core that is to be cut by
the die, and the die has one or more cutting edges on its front or outer face with.
suitable excavation for outlet of the shavings cut off by said edges. When the
die is cylindrical it may be held from revolving by a groove and feather, and
when the die has one cutting edge only, the passage for shavings may extend
through the wall of the die dividing the wall entirely so that the die is of the
nature of a spit or open ring. By means of a set screw in the stock compression,
may be exerted upon such die for reducing slightly its interior diameter. The
cutting edge of the die may be radial and perpendicular to the axis of the die, or
it may be inclined forwardly or backwardly according to the shape of shoulder
that is to be cut or left on the rod or bar at the end of the core. Behind the die
the stock carries a distance piece or plate connected to it by bars or pillars. The
centre of the distance piece may be perforated in alignment with the central
orifice of the die, and the said central orifice of the die may be slightly conical or
eased rearward of the die.
Dated this 20th day of August 1895.
HERBERT HADDAN & Co.,
Agents to Applicant.
COMPLEIE DIEUITIVATION.
A New or Improved Tool for Use in Lathes and the like for
Turning Rods and Bars.
I, SAMUEL PAUL LEHMANN of 22 South Villas, Camden Square, London, N.W.
Mathematical Instrument Maker, 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 purpose of this invention is to provide a new or improved tool to be used
in connection with a lathe or the like for cutting cores upon rods or bars of steel
or other metal or material. The said tool is illustrated in a simple form in the
annexed drawing in which Fig. 1 is an elevation and Fig. 2 a cross section and
Fig. 3 a detail view. The tool comprises a stock or handle of any suitable shape
such as A having one or more handle portions. In the head of the stock A. is a.
D

page_text: hole preferably cylindrical for receiving any one of a series of dies B. Each
die B has in its centre a passage way C of the diameter of the core that is to be
cut by the respective die, and the die has one or more cutting edges as at D on its
front or outer face with suitable excavation F for outlet of the shavings cut off by
said edges. When the die is cylindrical it may be held from revolving by a
groove and feather E and when the die has one cutting edge only as illustrated,
the passage F for shavings may extend through the wall of the die dividing the
wall entirely so, that the die is of the nature of a slit or open ring. By means of
a set screw G in the stock compression may be exerted upon such die for reducing
slightly its interior diameter. The cutting edge D of the die may he radial and
perpendicular to the axis of the die, or it may be inclined forwardly or backwardly
according to the shape of shoulder that is to be cut or left on the rod or bar at the
end of the core. Behind the die B the stock A carries a distance piece or plate G¹
connected to it by bars or pillars H. The centre of the distance piece may be
perforated at J in alignment with the central orifice C of the die, and the said
central orifice of the die may be slightly conical or eased rearward of the face of
the die that carries the cutting edge.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved tool comprising the stock A. and die B having a passage C and
one or more cutting edges D as and for the purpose described.
2. The improved tool comprising the stock A and die B having passage C
cutting edge D and passage F said die forming a slit ring, together with set
screw G.
3. The tool comprising stock A, die B constructed as described with the distance
piece G¹ attached to said stock.
Dated this Olot don of V
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C.,
Agents for Applicant.