AN IMPROVEMENT IN THE CUTTING OF BLANKS FOR HEXAGONAL NUTS to be as follows:
Year: 1884

page_text: I, OLIVER. IMRAY of N° 28 Southampton Buildings, Chancery Lane, in the
County of Middlesex Fellow of the Institute of Patent Agents do hereby declare
the nature of my invention for "AN IMPROVEMENT IN THE CUTTING OF BLANKS
FOR HEXAGONAL NUTS to be as follows:-
"
This invention relates to the cutting of blanks for hexagonal nuts from a bar of
rectangular section, in such a manner as to avoid waste and to get the blank in
such form that on its being punched compressed and shaped in the matrix it is
sound and strong. For this purpose, the bar is selected of a thickness equal to the
side of the hexagon and this bar is laid correctly to gauge with its edge over the.
mouth of the hexagonal matrix so that it exactly covers two opposite sides of
the hexagon. The hexagon punch then cuts from the end of the bar a rectangular
piece of length equal to the width of the hexagon from side to side, and of depth
equivalent to the breadth of the bar, which is such that when the rectangular
piece cut off is punched and conipressed in the matrix it fills it out and becomes a
blank hexagon nut of such depth as is required.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, OLIVER IMRAY, of N° 28 Southampton. Buildings, Chancery Lane, in the
county of Middlesex, Fellow of the Institute of Patent' Agents, do hereby declare
the nature of the said invention for "AN IMPROVEMENT IN THE CUTTING OF
BLANKS FOR HEXAGONAL NUTS," 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 the cutting of blanks for hexagonal nuts from a bar of
rectangular section, in such a manner as to avoid waste, and to get the blank in
such form that, on its being punched compressed and shaped in the matrix, it is
sound and strong. For this purpose, the bar is selected of a thickness equal to the
side of the hexagon, and this bar is laid correctly to gauge with its edge over the
mouth of the hexagonal matrix, so that it exactly covers the two opposite sides of
the hexagon, as shewn by the accompanying drawing. In this figure a b c d e f
indicates the outline of the hexagonal matrix, and B indicates the end of the bar
placed against the mouth of the matrix, the bar covering exactly the side ab of
the hexagon, and the end of the bar coinciding with the side de. The hexagon
punch then cuts from the end of the bar a rectangular piece a bde of length a e
or b d equal to the width of the hexagon from side to side, and of depth equivalent
to the breadth of the Lar, which is such that when the rectangular piece ab de
cut off, is punched and compressed in the matrix, it fills it out and becomes a blank
hexagon nut of such depth as is required.
The rectangular piece a b d e being thus disposed of, and the blank nut formed
from it being extruded from the matrix, the bar B, having a square end where the
piece was cut off at a b, is advanced a distance a a¹ equal to the width of the
matrix, so that the end at ab is made to coincide with the side de of the matrix.
A second piece is then cut off at a¹ b', and so on with successive pieces, which being
all rectangular, use up the length of bar operated on without any waste of material,
and without throwing on the cutting punch, more work than is necessary to shear
the bar right across it.
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
In cutting blanks for hexagonal nuts, selecting a bar of thickness equal to the
side of the hexagon and of sufficient breadth to give the required depth of blank,
placing the bar against the matrix so that the square end coincides with one side
of the hexagon and that the bar exactly covers the opposite side, and by the action
of a hexagonal punch, shearing off from the end of the bar a rectangular piece to
be punched, moulded and compressed in the matrix, as and for the purpose herein
set forth.