Improvements in the Manufacture of Rolled Metal Articles and in Apparatus therefor.
Year: 1886

page_text: Improvements in the Manufacture of Rolled Metal Articles and
in Apparatus therefor.
I, GEORGE FREDERICK SIMONDS, of Fitchburg, Massachusetts, United States of
America, Saw Manufacturer do hereby declare the nature of my invention for
"IMPROVEMENTS IN THE MANUFACTURE OF ROLLED METAL ARTICLES AND IN
APPARATUS THEREFOR to be as follows:-
"
My invention relates to the manufacture of rolled metal articles and to apparatus
for use in such manufacture.
In the specification of former Letters Patent dated 9th June 1885, No. 7028,
I have described the manufacture of metal articles circular in transverse section by
a peculiar method or manner of rolling between dies having diverging surfaces which
force or spread the surplus metal longitudinally outwards, and forming surfaces
which impart the required shape to the article to be made.
One object of my present invention is to facilitate the manufacture of such
articles whether solid or hollow.
In carrying my invention into practice I make the spreading and forming
surfaces of the dies in such a manner that I can shape the article and at the same
time condense or compact its substance and smooth or finish its surface by one
operation. For this purpose I pass the dies once over each blank, at the same time
applying pressure to the said dies and forcing and controlling the rotation of the
blank, where work is being performed, in conformity with the movement of the
die or dies. In this manner great uniformity in the articles produced by means of
a pair of dies can be ensured with respect to shape, size and condensation or
compactness of their substance.
My present invention further comprises the adaptation of the method or manner
of rolling described in the said former specification for the production of articles
which are polygonal in transverse section or which have grooves or projections or
both grooves and projections extending either parallel with, or inclined to, their
axes, such as toothed pinions, fluted rollers, projectiles and other articles.
For this purpose I employ dies which are arranged to be operated substantially
in the manner described in the said former specification, but which are provided
with projections or with grooves or indentations or with both projections and

page_text: grooves or indentations extending either at a right angle or at any other suitable
angle to the direction of movement of the die or dies according to the shape of the
article to be produced.
In making a toothed pinion according to my present invention, I take a blank of
the requisite size and roll the same between dies which are provided with pro-
jections for indenting the metal of the blank to form the spaces between the teeth
and at the same time spreading the surplus metal longitudinally outwards and
forcing and compressing the metal into the desired shape. Each die has its series
of projections so formed that those which first act upon the blank are smaller or
shallower than those which finish the operation, the intermediate projections being
gradually increased in size from one end toward the other end of the die, so that,
when the said blank is rolled by the said dies it will be gradually brought to the
desired shape, without any great variation in the strain or pressure upon the dies
at any part of the operation. Or I use two or more pairs of dies having pro-
jections of different sizes that is to say, the dies which are to act first upon the
blank having smaller or shallower projections than the dies which are to finish the
operation.
I proceed in a similar manner in manufacturing other articles according to my
said invention, the projections or grooves of the dies being varied in shape and
dimensions to correspond with the required form or configuration of the article to
be produced,
My present invention further comprises rotary dies for use in the manufacture
of the said articles..
In some instances, I make each of these rotary dies with spreading and forming
surfaces on one side thereof, and place the said dies face to face. In other
instances, I make the said dies with the spreading and forming surfaces on their
peripheries and place them edge to edge. Moreover I provide suitable mechanism
for continuously rotating the said dies, or for imparting reciprocating rotary
motion thereto, in opposite directions.
D

page_text: in Apparatus therefor.
I, GEORGE FREDERICK SIMONDS, of Fitchburg, Massachusetts, United States of
America, Engineer, 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:―
My invention relates to the manufacture of rolled metal articles and to apparatus
for use in such manufacture.
In the specification of former Letters Patent dated 9th June 1885, No. 7028,
I have described the manufacture of rolled metal articles circular in transverse
section by a peculiar method or manner of rolling between dies having diverging
surfaces which force or spread the surplus metal longitudinally outwards, and
forming surfaces which impart the required shape to the article to be made.
My present invention comprises the adaptation of the method or manner of
rolling described in the said former specification for the production of articles
which are polygonal in transverse section or which have grooves or projections or
both grooves and projections extending parallel with, or inclined to, their axes,
such as toothed pinions, fluted rollers, projectiles and other articles.
For this purpose, I employ dies which are arranged to be operated substantially
in the manner described in the said former specification, but which are provided
with projections, or with grooves or indentations, or with both projections and
grooves or indentations, extending either at a right angle or at any other suitable
angle to the direction of movement of the die or dies, according to the shape of the
article to be produced.
In making a toothed pinion according to my present invention, I take a bar or
blank of the requisite size and roll the same between dies which are provided with
projections for indenting the metal of the blank to form the spaces between the
teeth, and, at the same time, spreading the surplus metal or forcing the same
longitudinally outwards, and which are subjected to pressure so that they will
compress the metal into the desired shape. Each die has its series of projections
so formed that those which first act upon the blank are smaller or shallower than
those which finish the operation, the intermediate projections being gradually
increased in size from one end toward the other end of the die, so that, when the
said blank is rolled by the said dies, it will be gradually brought to the desired
shape, without any great variation in the strain or pressure upon the dies at any
part of the operation. Or I use two or more pairs of dies having projections of
different sizes, that is to say, the dies which are to act first upon the blank having
smaller or shallower projections than the dies which are to finish the operation.
I proceed in a similar manner in manufacturing other articles according to my
said invention, the projections or grooves of the dies being varied in shape and
dimensions to correspond with the required form or configuration of the article to
be produced.
The said dies are, in some instances, made without the spreading and reducing
surfaces.

page_text: My present invention further comprises rotary dies for use in the manufacture of
grooved or fluted articles such as those above referred to, or of articles which are
circular, or approximately circular, in. transverse section.
In some instances, I make each of these rotary dies with the spreading and
reducing surfaces and the forming or shaping surfaces on one side or face thereof,
and place the said dies face to face with their axes in the same straight line. In
other instances, I make the said dies with the spreading and reducing surfaces and
the forming or shaping surfaces on their peripheries and place them together with
their axes parallel to each other. The dies in either case are mounted upon shafts
carried in bearings in a suitable frame. Moreover, I provide suitable mechanism
for continuously rotating the said dies or for imparting reciprocating rotary
motion thereto, so that the working surfaces of the dies will move in opposite
directions.
The working surfaces are preferably cut or otherwise formed on the surface of a
roller; but they may, if desired, be made flat and then bent to fit the roller and
secured thereto in any convenient manner.
•
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I wish it understood
that I claim
First. The manufacture of toothed pinions, fluted rollers, or other articles which
are polygonal in transverse section or which have grooves or projections or both
grooves and projections extending parallel with or inclined to their axes, by rolling
bars or blanks between dies subjected to pressure.
Second. A die provided with grooves or projections or both grooves and pro-
jections extending at an angle to the line of movement of the die for the purpose
above specified.
Third. A rotary die provided with spreading and reducing surfaces and with
forming or shaping surfaces for the purposes above specified.
The OLL
SAT
100
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.