and Nuts, and for similar Purposes
Year: 1886

page_text: and Nuts, and for similar Purposes,
I HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of my invention to be as follows:-
This invention relates to apparatus for shaping and finishing the sides of screw-
bolt-heads, screw-nuts or other articles.
The said apparatus consists essentially of a cast iron body provided with steel
cutters and of gauge cheeks between which the articles to be operated upon are
placed.
This cast iron body with the steel cutters secured therein by screws is mounted
on a machine suitable for drawing or forcing the articles.
The articles to be finished, such as bolt-heads, nuts or the like are placed between
the said cheeks and together inserted into the cast iron body which has guides for
gauging the size. The plunger of the pressing or drawing machine now imparts
an equal pressure upon all parts of the bolt-head, the screw-nut or other article,
and forces or draws the same together with the gauging cheeks between the
cutters secured in the cast-iron body.
These specially formed cutters of cast steel have a number of inclined teeth and
can be adjusted according to the width or dimensions of the finished article, and
then fixed. These cutters are moreover made slightly converging longitudinally,
that is to say, they stand a little further apart at their upper than at their lower
ends so that the superfluous material is successively removed in small shavings,
the last shaving removed by the lowermost tooth being only a fine finishing
shaving. After the first gauge cheek. has been used, the screw-bolt head or
nut or other article is placed with the opposite polished sides between other gauge

page_text: cheeks and the operation before described is repeated. If a square article has thus
been operated upon it is now finished. In operating upon hexagonal or other
• polygonal articles the gauge cheeks together with the articles to be finished are
again inserted between the cheeks as many times as necessary and drawn through
until all the surfaces have been finished by the cutters.
In finishing screw-nuts two or more can be operated upon at the same time with
this device.
Instead of using only two cutters four or more having straight or curved edges
can be simultaneously used in order to finish the work as quickly as possible.
Dated this 27th day of Februo 1986

page_text: Figures 4, to, 11 are views of details hereinafter described.
The said apparatus consists essentially of a cast iron body a provided with steel
cutters 6 and with clamping jaws c or d between which the articles to be operated
upon are placed.
This cast iron body with the steel cutters secured therein by screws is mounted
on a machine suitable for forcing or drawing.
The articles to be shaped, such as bolt heads, nuts or the like are first placed
between the said clamps d and together inserted into the cast iron body a which
has guides a¹. The plunger of the forcing or drawing machine now imparts an
equal pressure upon all parts of the bolt-head, or the screw-nut or other article and
forces or draws the same together with the clamps through the apparatus so that
the opposite sides of the said head or nut are moved past the steel cutters b,
secured in the cast iron body a.
These specially formed cutters are made of cast steel and have, as shown in
Figures 6 and 7 of the accompanying drawing, a number of inclined teeth. The
said cutters can be adjusted and fixed according to the shape or dimensions
required for the finished article. These cutters are moreover made slightly
tapering longitudinally so that when placed in operative position they stand a
little farther apart at their upper than at their lower ends.
It will thus be understood that when the bolt-head or nut is passed between
the said cutters the superfluous material is removed in successive shavings, the last
shaving removed by the lowermost tooth being only a fine finishing shaving.
After two sides of the bolt head or nut have been finished the bolt or nut is
removed from the clamp d. and is placed in the clamp c when the operation before
described is repeated.
If a square article has been thus operated upon it is only necessary to pass it
between the cutters twice. If however, the article is of hexagonal or other
polygonal shape it has to be passed between the cutters three or more times until
all the surfaces have been finished by the cutters.
Figures 8 to 11 show a device by means of which two or more screw-nuts can
be operated upon at the same time.

page_text: In order to finish the work quickly four or more cutters having flat or curved
surfaces can be simultaneously used.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to
me by my foreign Correspondents I declare that what I claim is,
First In apparatus for shaping and finishing bolt heads and nuts and for
similar purposes, cutters formed substantially as shown in the accompanying
drawing, the said cutters having inclined teeth and being mado tapering in their
longitudinal direction so that when in operative position they are farther apart at
their upper than at their lower ends, whereby a series of small shavings can be
successively removed from the article operated upon.
Second-The guiding or clamping calibre constructed substantially as described
with reference to the drawing, for the reception of the screw-bolts, screw-nuts or
other articles to be operated upon and adapted to operate in combination with the
cutters as set forth,