Improvements in Machines for Forging and Finishing Nuts and other Articles.
Year: 1895

page_text: Date of Application, 22nd Oct, 1895--Accepted, 29th Feb., 1896
COMPLETE SPECIFICATION.
Improvements in Machines for Forging and Finishing Nuts and
other Articles.
I, SAMUEL VANSTONE, of No. 1 Ashton Street, Providence, in the County of
Providence, and State of Rhode Island, United States of America, Mechanic, do
hereby decline 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
This invention has relation to the manufacture of nuts and other articles, and
is designed to provide means for forming such articles whereby they are finished
by the action of the dies, instead of by milling as has been usual heretofore.
With this object in view, the invention consists in the novel process of manufacture
and in the novel construction and combination of parts, all as hereinafter described
and pointed out in the appended claims.
1 have shown the invention as embodied in a machine designed for the
manufacture of nuts, and the description will be chiefly confined thereto. I
desne it to be understood, however, that by changing the contour of tho die,
which is hereinafter termed the trimming die, I may by a similar process perform
other work
In carrying out my invention as applied to the manufacture of nuts, the stock or
bar from which the nuts are to be formed, after being properly punched, is moved
forward, or is carried to a second punch having a concave cutting face, and
working in conjunction with a concave stationary die. This punch and die not
only cut the blank from the bar or stock, but also crown such blank ou both the
upper and lower faces. The blanks are thon moved forward and are forced
through a series of dies, placed one behind the other, and of progressively
decreasing diameter, and which act upon the blanks to tim them and produce a
perfectly finished nut.
In the accompanying drawings.
Fig. 1, represents a vertical section of a press provided with my improvement.
Fig. 2, represents a top view of the die holding plate.
Fig. 3, represents an under side view of one of the parts of the trimming-die.
Fig 4, represents an edge view of the same.
Fig. 5, represents a section taken in the line 5, 5, of Fig. 1, showing the openings
for the downward passage of the chips sliaved from the edges of the nut.
Fig. 6, represents the top view of the trimming-die provided with internal
projections.
In these drawings, the letter A, designates the frame of the press, and B the
reciprocating head which caries the several punches, the said reciprocating head
being operated by means of the crank C upon the shaft D, and the connecting
rod E. At tho under side of the reciprocating head B is located the punch F,
which makes the perforations in the bar o stock indicated at a, and G is the
Becond punch, which has a concave face b, and which acts in conjunction with a
stationary concave die H, to make the clown upon the two faces of the blank and
to cut or sever said blanks from the bar or stock.
The tumming dies or die-parts I, 11, 12, are arranged one above the other in the
opening c, made in the die holder J. The fist die or die part I, of the series, has
an opening which is of the form of the nut, and which is a trifle smaller than the
nut-blank. The opening of the second die or die-part 1, is slightly'smaller 'than
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page_text: that of the first, and the opening in the third die or die-part I, is slightly smaller
than that of the second Upon the under faces of the die parts I, II, are formed
a series of radial grooves d, which communicate with vertical openings of channels,
made in the die-holder J, around the opening c, for the dies or die-parts I, 11, 12.
The grooves or channels e ate arranged to communicate with the channels e¹,
extending downward through the bed of the press, the latter channels being shown
in enlarged cross section in Fig. 5
The grooves or channels e and e', are for the purpose of permitting the
escape of the tummings of chips cut from the blanks as they are forced
through the dies, whereby the dies are prevented from clogging, and are made
Belf cleaning.
The punch G, which forces the blanks through the stationary trimming-dies, is
designed to fit the opening in the middle die, into which it descends to about one
thirty second of an inch from the botton thereof, so as to keep the last die
sharp; the succeeding blank forces the first blank into the last die, and nearly
through it,
Although I have referred to the three dies 1, 11, 12, they may be more properly
referred to as forming one die, of which they constitute different parts. This die
I term the tumming-die, I do not, however, wish to confine myself to the use of
the three dies or die-parts, as two or more may be employed
For the purpose of canying the blanks from the punch G, to the trimming dies,
aslide K may be provided, which works underncath a slotted plate L, aud is
actuated by a lever M. which is fulciumed at g, to the fiame of the press. Said
lever at its upper end has Journaled thereto an anti-friction 1oller h, which travels
in contact with the periphery of the disk N, and is actuated to operate the slide K,
by means of the cam projection of the said disk. A spring O, attached to the
lever and to the frame, ictuins said slide and lever to their first positions, as soon
as the roller h, is freed from the projection?
It will be observed that the nuts formed as above described, are perfectly
ieversible, being crowned upon both sides Should it be desirable to crown them
on one side only, the face of the punch G, may be made flat, instead of concave.
It will be obvious that by changing the form of the trimming-die, or by forming
internal projections therein, as shown in Fig 6, such die may be employed for
trimming other articles
Having now particularly described and ascertained the nature of my said inven
tion, and in what maunei the same is to be performed, I declare that what I
claim is.
1. In a machine for the purposes described, the combination with a trimming-dic
consisting of two or more superposed dies or dic-parts having openings there-
through of progressively decieasing diameter, and provided with outwardly
extending grooves of passages which communicate with escape openings which are
independent of the openings through the dies or die-parts, of a reciprocating punch
aranged to force the blauks through the said dics o die-parts, substantially as
specified.
2. In a machine for the manufacture of nuts and other articles, the trimming-dic
consisting of a series of two or more super posed dies or die-parts having openings
theicthrough of progressively decreasing dinmeters, said dies or die-parts, with
the exception of the lower one, having each a series of outwardly extending
grooves which communicate with channels in the die supporting part, substantially
as specified.
3. The combination of a reciprocating head provided with a perforating punch,
a clowning and cutting punch, and a forcing puuch, with stationary dies or die-
plates which co-operate respectively with said perforating punch and with the
crowning and cutting punch; and a tumming-die made up of two or more paits,
through which the blanks are designed to be forced by the forcing punch, the
openings in said parts being of progressively decreasing diameters, Logether with

page_text: means for carrying the blanks from the crowning-die to the tumming-die,
substantially as specified.
4. A trimming-die having two or more parts, the openings of which are of
progressively decreasing size, and having also clearance openings or channels
which communicate with the die-openings, but are independent thereof, substantially
as specified.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.