MACHINERY FOR COMPRESSING, ROUNDING, OR POINTING METATA
Year: 1866

page_text: LETTERS PATENT to Orin Lewis Hopson and Heman Porter Brooks, of
Waterbury, in the State of Connecticut, United States of America, for
the Invention of "MACHINERY FOR COMPRESSING, ROUNDING, OR POINTING
METATA"
ALDO A
PROVISIONAL SPECIFICATION left by the said Orin Lewis Hopson and
Heman Porter Brooks at the Office of the Commissioners of Patents,
with their Petition, on the 20th October 1866.
We, ORIN LEWIS HOPSON and HEMAN PORTER BROOKS, of Waterbury, in
the State of Connecticut, United States of America, do hereby declare the
nature of the said Invention for "MACHINERY FOR COMPRESSING, ROUNDING,
OR POINTING WIRES OR RODS TO FORM PINS, NEEDLES, OR OTHER ARTICLES OF
METAL," to be as follows:-
This Invention is an improvement upon that for which Letters Patent were
granted to us in Great Britain, October 14th, 1864, No. 2540, and a
reference is hereby made to said Patent for a statement of the general
character of the said improvement.
In order to obtain great power in compressing articles such as steel wire
to reduce it and form the body of a sewing-machine needle we make use of a
series of toggle blocks arranged around the revolving shaft carrying the dies.;-
each of these toggle blocks is formed with a cavity in its inner face, into which

page_text: comes the convex surface of the die as it revolves, and the two move together,
the toggle block swinging in the arc of a circle from its outer end, which is
in a block adjusted by a screw; as soon as the die passes beyond and clear
of each toggle block successively the toggle block is returned to its normal
position by the action of a standing spring or a cam revolving around with the
dies. The dies themselves are made in pairs passing across the revolving shaft,
instead of only one being movable as in the aforesaid Patent; the dies slide in
a dovetail or undercut groove across the end of the shaft, and the amount they
are allowed to open each time (by the act of forcing in the wire to be pointed)
is regulated by conically pointed screws entering conical recesses in the dies
or in the shaft. The dies are made in pairs, the inner pair having recesses of
the shape to be formed, the outer pair taking the aforesaid toggle blocks or
cams, and we fit in a movable steel pin to form the convex surface at the
outer ends of the dies to take the concave ends of the aforesaid toggle
b'ocks
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Orin Lewis Hopson and Heman Porter Brooks in the Great.
Seal Patent Office on the. 17th April 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ORIN
LEWIS HOPSON and HEMAN PORTER BROOKS, of Waterbury, in the State of
Connecticut, United States of America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her-Letters
Patent, bearing date the Twentieth day of October, A.D. One thousand eight
hundred and sixty-six, in the
year of Her reign, did, for Herself,
Her heirs and successors, give and grant unto us, the said Orin Lewis Hopson'
and Heman Porter Brooks, Her special license that we, the said Orin Lewis
Hopson and Hemau Porter Brooks, our executors, administrators, and
assigns, or such others as we, the said Orin Lewis Hopson and Hemau
Porter Brooks, our executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "MACHINERY FOR
COMPRESSING, ROUNDING, OR POINTING WIRES OR RODS TO FORM PINS, NEEDLES,
OR OTHER ARTICLES OF METAL," upon the condition (amongst others) that we,.
the said Oriu Lewis Hopson and Henan Purter Brooks, by.an. instrument

page_text: writing under our hands and seals, should particularly serie
n the nature of the said Invention, and in what manner the same was to:
.performed, and cause the same to be filed in the Great Seal Patent Office
thin six calendar months next and immediately after the date of the said
etters Patent.
NOW KNOW YE, that we, the said Orin Lewis Hopson and Heman Porter:
rooks, do hereby declare the nature of the said Invention, and in what.
anner the same is to be performed, to be particularly described and ascer-.
ined in and by the following statement, reference being had to the annexed:
Drawing, and to the letters and figures marked thereon (that is to say):
--
Fig. 1 is an elevation of our machinery endwise of the revolving shaft;:
Fig. 2 is a longitudinal section of the same; Fig. 3 is an end view, and Fig..4
s a section of the same apparatus with a different construction of die; Fig. 5
sa sectional plan of the shaft and dies shown in Figs. 3 & 4; and Fig. 6.
is an elevation showing a variation in the construction and mode of movings
the toggle blocks. Similar marks of reference denote the same parts.
This Invention is an improvement upon that for which Letters Patent were:
granted to us in Great Britain, October 11, 1864, No. 2540, and a reference.
is hereby made to said Patent for a statement of the general character of
said improvement,
:
In order to obtain great power in compressing articles such as steel wire
to reduce it and form the body of a sewing-machine needle we make use of a
series of toggle blocks arranged around the.revolving shaft carrying the dies; "
each of these toggle blocks is formed with a cavity. in its inner. face, into which
comes the convex surface of the die as it revolves, and the two move together,
the toggle block swinging in the arc of a circle from, its outer end, which is
in a block adjusted by a screw; as soon as the die passes beyond and clear
of each toggle. block successively, said toggle block is returned to its normal
position by the action of a standing spring or a cam revolving around with the
odies. The dies themselves, are made in pairs passing across the revolving shaft,
instead of only one being movable as in aforesaid Patent; the dies slide in a
dovetail or undercut groove across the end of the shaft, and the amount they
the wire to be pointed)
are allowed to open each time (by the act of forcing
is regulated by.conjcally pointed screws entering conical, recesses in the dies
5 or in the shaft. The dies are made in pairs, the, inner pair having recesses of
the shape to be formed; the outer pair taking the aforesaid toggle blocks or
cams, and we fit in a movable steel pin to form the convex surface at the
outer ends of the dies to take the_concave-ends of-the-aforesaid toggle

page_text: .
In the Drawing a represents the shaft that is supported in suitable bearings..
and revolved by competent power; c, c, are dies introduced in a groove :or.
cross opening at or near the end of the shaft a. In Figs. 3 & 4 this. groove.
is shown undercut or dovetailed, so as to keep the dies in place without the
capf, Figs. 1 & 2. These dies c, c, are adapted to shaping the desired article 5
by a series of compressions, and are each formed of one piece of the proper
shape, as seen in Figs. 1 & 2, or they may be divided, as seen in Figs. 3 & 4,
the parts 1, 1, forming the dies to give shape to the needle or other article.:
between their surfaces, and the parts 2, 2, taking the toggle blocks d: This:
construction allows the dies 1, 1, to be hardened separately, and in case of 1
accident or change of pattern the dies can be removed without changing the
parts 2, 2. The screws i, i, pass through the dies c, c, Figs. 3 & 4,. ori
through the cap plate f, Figs. 1 & 2, and have tapering points entering conical.:
recesses, so that the amount the dies can be opened by pressing in the article:
to be reduced. will be regulated by forcing in or withdrawing the tapering '1
points of said screws i, i. Set nuts 3, 3, are employed to hold the screws;
from working loose. The stationary stock 6 may be provided with pairs of
cams or tappets as in aforesaid. Patent if the work to be performed, is light,
but for heavy work we employ pairs of toggle block d, 'd, set to turn at one:
end in a stationary socket, as in Figs. 1 & 2, or in an adjustable socket 9, 2
Figs. 3 & 4, the other ends of the toggles.swinging by contact with the ends
of the dies c, thereby producing a powerful toggle action and compression by.
the dies. These toggle blocks d are retained in position by a ring / screwed
upon the face of the stock 6 as in Figs. 3 & .4, or in other snitable manner..
The blocks d, d, are returned to their normal position after the dies have a
passed by the action of springs k attached at one end in the stock b, the
other end acting on the toggle block to press it to one side so as to be ready:
to take the ends of the dies as they come around again. In place of the.
springs & the toggle blocks may be moved to place by cams, as seen in Fig. 6;
in this Fig. the toggle blocks d, d, are cylindrical and have cam projections 5. S
on their outer ends that are acted upon by the cams that revolve with the.
shaft a, and turn the blocks d into the proper position for the ends of the.dies
to take the concave surfaces of the toggle blocks, this movement of the.
blocks d'by the cams 7 being effected just before the ends of the dies c come
into contact with said blocks. This movement is unfailing, while with the s
springs the machine may be broken in consequence of a spring failing to act.
The rounded ends of the dies-c may be formed by small cylinders of hardened
steel as shown at 6, the-same-being placed in holes at the ends of the dies c,
so that the side of the cylinder projects to take the wear. The stock b.and.

page_text: parts carried by it might be revolved and the shaft a stand still; in that case
the article to be reduced would also have to be revolved.
By our present improvement a very effective and powerful mechanism is
obtained for forming any article such as a rod or wire into the shape of the
dies by a series of compressions from these dies acting around the article
itself.
What we claim and desire to secure by Letters Patent is,-
First, a pair of dies acting by a series of compressions to form a wire or
other article into the shape of such dies, substantially as set forth.
Second, we claim determining the amount that such dies shall open by
conical pointed screws, substantially as set forth.
Third, we claim toggle blocks applied to close the dies, substantially as set
forth.
Fourth, we claim moving said toggle blocks back to their normal position
after the dies have passed by the action of springs or cams, substantially as
set forth.
Fifth, we claim forming the dies c in the two parts 1 & 2, so that the
portion that gives shape to the article may be replaced or changed independent
of the other part, as set forth.
Sixth, we claim the cylinders 6 forming the wearing surfaces of the dies c, c,
as set forth.
In witness whereof, we, the said Orin Lewis Hopson and Heman Porter
Brooks, have, hereunto set our hands and seals, this Second day of
April, A.D. One thousand eight hundred and sixty-seven.
L.B.)
HEMAN P. BROOKS. (L.S.)
Witnesses,
WILLIAM F. HOPSON,
MARION P. IVES,
as to O. L. Hopson.
HENRY ALLDAY,
SAMUEL A. TAYLOR,
} as to
as to H. P. Brooks.