CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN THE MANUFACTURE OF METALLIC 'NUTS
Year: 1864

page_text: LETTERS PATENT to Eric Hugo Waldenstrom, of Manchester, in tho
County of Lancaster, Mechanical Draughtsman, for the Invention of
"CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED IN
THE MANUFACTURE OF METALLIC 'NUTS.'"
Sealed the 14th February 1865, and dated the 19th August 1864.
PROVISIONAL SPECIFICATION left by the said Eric Hugo Waldenstrom
at the Office of the Commissioners of Patents, with his Petition, on the
19th August 1864.
I, ERIO HUGO WALDENSTROM, of Manchester, in the County of Lancaster,
Mechanical Draughtsman, do hereby declare the nature of the said Inven-
tion for "CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE EMPLOYED
IN THE MANUFACTURE OF METALLIC 'NUTS,'" to be as follows:-
The Invention relates to the formation of the pieces of metal termed "nut
blanks," which are afterwards tapped internally with a thread or screw, and
are employed as a screw fastening in connection with screwed bolts.
The improvements consist in the employment and use of two moveable
"die boxes," within one of which a moveable plunger is used, the other con-
taining a stationary plunger, that is to say, the three moving parts are the two
halves of the die box, and one of the plungers only. The bar of metal from
which the blank is to be formed is placed between the two halves of the "die
box," which are brought together by two eccentrics on one rotating shaft, and
connecting rods, so that a portion of one-half of the "die box" enters the

page_text: other, thus cutting off the blank from the bar, and compressing it within the
then closed dic. Simultaneously with this motion, and actuated by the same
eccentric, the moveable plunger in one half of the "dio box" proceeds forward
and compresses the centre of the nut against the stationary plunger, so as to
form a hole nearly through the nut, then the other half of the "dio box"
moves forward and further compresses the nut, and also presses the picco
remaining in the hole against the moveable plunger, thus forcing it out, and
completing the bole, the "die boxes" then recede, and allow the nut to fall
clear, and by which movement also tho wasto piece punched out of the nut is
delivered, and the apparatus is ready to form another blank.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Eric Hugo Waldenstrom in the Great Seal Patent Office
on the 18th February 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ERIC
HUGO WALDENSTROM, of Manchester, in the County of Lancaster, Mechanical
Draughtsman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of August, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Eric Hugo Waldenstrom, Her special licenso that I, the said
Eric Hugo Waldenstrom, my executors, administrators, and assigns, or such
others as I, the said Eric Hugo Waldenstrom, my 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, sliould 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 "CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS TO BE
EMPLOYED IN THE MANUFACTURE OF METALLIC NUTS,'" upon the condition
(amongst others) that I, the said Eric Hugo Waldenstrom, my executors
or administrators, by an instrument in writing under my, or their, or one of
their bands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patant

page_text: NOW KNOW YE, that I, the said Eric Hugo Waldenstrom, do hereby
declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by
the following statement and accompanying Drawings (that is to say):—
"
The Invention relates to the formation of the pieces of metal termed "nut
blanks," which are afterwards tapped internally with a thread or screw, and
are employed as a screw fastening in connection with scrowed bolts.
The improvements consist in the employment and use of two metallic "die
boxes," within one of which a moveable plunger is used, the other containing
a stationary plunger, that is to say, the three moving parts are the two balves
of the die box, and one of the plungers only. The bar of metal from which
the blank is to be formed is placed between the two halves of the "die box,"
which are brought together by two eccentrics on one rotating shaft and con-
necting rods, so that a portion of one-half of the "die box" enters the other,
thus cutting off the blank from the bar, and compressing it within the then
closed die. Simultaneously with this motion, and actuated by the same
eccentric, the moveable plunger in one half of the "die box" proceeds
forward and compresses the centre of the nut against the stationary plunger,
so as to form a hole nearly through the nut, then the other half of the "die
box," moves forward, and further compresses the nut, and also presses the
pièce remaining in the hole against the moveable plunger, thus forcing it out,
and completing the hole; the die boxes then recede, and allow the nut to fall
clear, and by which movement also the waste piece punched out of the nut is
delivered, and the apparatus is ready to form another blank.
In order that the Invention may be better understood and explained in
detail, I have hereunto attached a Sheet of Drawings made upon a scale of
about one inch and a half to the foot, similar letters of reference being marked
upon corresponding parts in all the Figures.
Fig. 1 represents a longitudinal sectional view of the machine for making
nut blanks, shewing the position of the punches, dies, and "put box," also the
relative positions of the eccentrics at the time when the nut would be severed
from the metal bar, and before it is finally finished; Fig. 2 represents a
sectional plan view of the same; Fig. 8 represents a transverse section through
the line A, B; and Fig. 4 is a section of the nut box, dies, and punches,
arranged so that the "burr" or metal in the interior of the nut is forced or
punched out during its formation, instead of being compressed into and
forming a portion of the nut, being a modification of the method described
in the Provisional Specification.
T TA
Le Gamin of the hi

page_text: eccentrics b, b, and b', which are driven by the pulleys and gearing c, c; the
eccentrics b, b, actuate the nut box d and moveable punch e, tho eccentric b
actuating at the same time the moveablo hollow die f, within which is placed
the fixed stud o. Within the supporting slide 9 of the nut box is a fixed
die o' (kept in position by yielding elastic bearings k', k',) against which the
nut is forced by the moveable dio o, these dies o' and o forming the top and
bottom of the nut during its formation in the nut box. In the slide is
g
formed a slot or recess h, through which passes a transverse cross bar i, to
which is secured the moveable punch e; this cross head is caused to move the
punch with every stroke of the eccentric b, b, which is effected by the ends
or extremities of the slot h in the slide 9 forcing it backwards and forwards
the distance required, allowing with each revolution of the eccentrics b, b, a
dwell or rest to the punch e, during which time the cross bar i to which the
punch is attached becomes acted upon by the buffers k, k, in the manner
herein-after described. Upon reference to the foregoing description the action
and tho working of the several parts will readily be understood. When the
eccentrics b, b, and b' first commenco revolving, the nut box is at the extreme
of its back stroke, so that the eccentrics b, b, cause it to advance; at this
time the bar from which the nut blank is to to formed is inserted between
the fixed die o' and moveable die f, then as the eccentrics continue their
revolution the nut box d, the dio f, and the moveable punch e are drawn or
forced towards each other, and the blank is cut off by the edge of the nut box
and dief, the punch still proceeding with the nut box punches up the metal
against the fixed stud o placed in the hollow die f; the punch e at this time,
that is, when pressing against the nut blank, and just before entering the
same, is retarded in its progress, and caused to give an increased pressure by
means of the buffers k, k, being compressed during the time the bar i traverses
the length of the slot in the slide 9, such slide still advancing forces forward
the punch e, the action of which squeezes the metal into the nut, which thus
becomes absorbed, and forms a portion of the body of the nut, the punch e
still advances beyond the extremity of the nut; and within a short distance of
the fixed stud o; the distance between the punch and stud contains the
"wadding" or waste mictal. The punch e baving now completed its forward
stroke is allowed to remain stationary a short time by the pressure' and
expansivo action of the buffers k, k; during this interval the nut box com-
anences its backward throw, being followed up by the moveablo dief, actuated
by the eccentrics b'; this moveable dief moves forward until it overlaps the
punch e, which thus severs the "wadding" from the body of the nut, at the
'same time squeezing or forcing the nut up against the die o', and clean round

page_text: the punch e, so finishing and completing its formation, the nut box still
receding, now brings the end of the slot h against the cross bar i attached to
the punch e, thereby carrying or forcing such punch and buffers k, k, back;
during this backward action of the nut box and punch, the complete nut has
been cleared or forced from the box by the fixed dio o', the eccentrics 6¹
having also drawn back the die f; the stud o forces from out such die the
"wadding" or waste metal, the machine at this time being ready to form
another blank nut. In Fig. 4 the stud o in the moveable die f is shortened,
for the purpose of allowing the punch e to force out the "burr" or the space,
for "tapping" in the nut, the waste metal so forced out being received by the
hollow die f, and finally delivered or cleared from such die as it is withdrawn,
in the afore-mentioned manner. The bar of metal from which the blanks are
cut is supported by suitable brackets, a stop being provided, against which
such bar is pressed when the punch dies and box are withdrawn, giving the
length and quantity of metal required to form a nut blank.
Having now described the nature of the said Invention, together with the
method of carrying the same into practical effect, I wish it to be distinctly
understood that I claim,-
First, the novel and peculiar construction, combination, and action of the
dies, nut box, and punches.
And, secondly, I claim the general arrangement and construction of the
machine to be employed in the manufacture of "nut blanks," as herein-before
described, set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said Eric Hugo Waldenstrom, have hereunto
set my hand and seal, this Sixteenth day of February, in the year
of our Lord One thousand eight hundred and sixty-five.
A TTAAז
TATT
ERIC HUGO WALDENSTROM. (L.S.)