IMPROVEMENTS IN MACHINERY FOR MANUFACTURING METALLIC NUTS
Year: 1864

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," No. 12, Southampton Buildings, Chancery Lane, in the County
of Middlesex, Civil Engineer, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR MANUFACTURING METALLIC NUTS."-A communication from
abroad by William Chisholm, of Cleveland, Ohio, United States of
America.
Sealed the 16th September 1864, and dated the 16th April 1864.
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and Decla-
ration, on the 16th April 1864, pursuant to the 9th Section of the Patent
Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
HASELTINE, of the "International Patent Office," No. 12, Southampton
Buildings, Chancery Lane, in the County of Middlesex, Civil Engineer, send
greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
MACHINERY FOR MANUFACTURING METALLIC NUTS," and have petitioned Her
Majesty to grant unto me, my executors, administrators, and assigns, Her
Royal Letters Patent for the same, and have made soleinn declaration that it
has been communicated to me from abroad by William Chisholm, of Cleve-
land, Ohio, United States of America.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal, fully.

page_text: describes and ascertains the nature of the said Invention, and in what manner
the same is to be performed, in and by the following statement, reference
being had to the accompanying Drawings, making a part of this Specification,
in which Figure 1 is a side view, Figure 2 is a top view, Figure 3 is a longi-
tudinal vertical section, Figure 4 is and end view, Figures 5, 6, and 7 are
transverse sections, and Figure 8 is a longitudinal vertical section with the
parts in a different position from that shown in Figure 3. Like letters refer
to corresponding parts in the several Figures.
All the parts and movements are attached to a bed plate P of sufficient
strength to sustain with safety all the strain to which it is subjected in the
process of forming nuts. There are three openings through the bed plate.
That shown at Q is to allow the free movement of a cam hereafter to be
described; that shown at R is for the discharge of the burr of the nut from
the hollow mandrel; and that shown at R' is for the discharge of the formed
nuts. A strong shaft S, placed transversely to the bed plate at the right-hand
end of the machine, is mounted in boxes S¹, S'; to this shaft the power is
applied, and from the revolution of this shaft in the direction of the arrow all
the movements of the machine are obtained. The shaft S should be from six
to eight inches in diameter, according to the required work of the machine,
and all the other parts should be in proportion to secure the requisite strength.
The shaft S should be provided with a balance wheel to insure steadiness in
the motion. The cam A is placed upon the shaft S, intermediate between the
bearings S¹, S¹; its action is upon the mandrel C, as herein-after described.
Upon each side of the cam A, at a distance of about one inch, I place the
cams B, B, in the relative position shown in Figure 2.. The mandrel C is placed
in the same horizontal plane with the shaft S, but at right angles thereto, the
centre of which is also in line with the centre of the cam A, as shown in the
line x, x, in Figure 2. The mandrel C is secured to the bed plate P by boxes
T, T', and has a reciprocating motion therein to the extent of the sweep of
the cam A. The mandrel C is slotted vertically for the cam A, and horizontally
to admit the shaft S, as seen at C¹, C", in Figures 3 and 8. The slot C³, C",
is long enough to admit of all the motion required by the revolution of the
cam A. The cams B, B, occupy a position upon the shaft just outside of the
bars C, C, and in their revolution come in contact with the shoulders B', B',
which are attached to the mandrel C, the position of the cams being such
upon the shaft that when the cam A leaves the body of the mandrel. C the
cams B, B, come in contact with the shoulders B, B', and carry the mandrel C
back to the position shown in Figure 3, where it remains at rest with the
exception of a slight movement forward; presently to be described; during

page_text: nearly half the revolution of the shaft S. This slight movement forward is
caused by a short cam A', which comes in contact with the point of pressure
for the cam A the moment the cams B leave the shoulders B'. The object of
this slight movement is to allow the female die, hereafter to be described, to
be moved back out of the way of the bar from which the nut is cut. For the
purpose of relieving the mandrel C from the friction of the cam A as much as
possible, I introduce the friction plate D between the knuckle of the cam A
and the body of the mandrel C. This plate is made of steel, and is allowed a
free motion of about two inches, and is held, when not under pressure, in the
position shown in Figures 1 and 3 by a spring D¹. When the cam A-strikes
this plate it moves upon the face of the plate D until the pressure becomes
sharp, when the plate itself moves downward, thus giving ease and efficiency
to the movement, and as soon as the pressure is relieved by the passage of
the cam the spring D' raises the plate D to its original position. The friction
of the plate D against the body of the mandrel is less than that of the knuckle
of the cam against the plate, for the pressure is distributed over a larger lubri-
cated surface, and further, when the plate becomes worn it can be removed
and another introduced in its stead. The lower end of the plate is a trifle
thicker than at the point where the cam strikes it, and thus favors the move-
ment downwards when under pressure. The forward end of the mandrel C is
hollow, as shown at a in Figures 3 and 8, the bore being às large, or a trifle
larger, than the largest punch used in making nuts. The burrs punched from
the nuts are forced through this hollow mandrel and discharged by or through
the opening in the under side through the bed plate at R¹.
is provided with a head b, into which is inserted the male die E.
is held in place in its seat by means of the jamb block e and
arranged as shown in Figure 6. The jamb block e slides into recesses, as
shown in the Figure, the point of the set screw d pressing against the side of
the male die E, holding it secure. By releasing the set screw d both the
jamb block and the male die can be removed for the insertion of a die of
different size. The sides of the female die or matrix, in which the nut is
formed, consist of the adjustable pieces F", F", which can be moved outward
or inward and secured at any desired point by means of the bolts e, shown in
Figure 2. The lower side of the matrix consists of a movable plate f, which
can be removed at pleasure and a thicker or thinner one introduced, according
to the size of the nut to be made. The upper part of the matrix consists of
the head plate G, which is secured in place in the head 6 by the jamb block e
and male die E, as shown in Figure 6. The side F of the matrix has a
recess F¹, into which the projecting edge G of the head plate G' fits for the
The mandrel C
The die E
set screw d

page_text: purpose of preventing the heated bar from "upsetting" in cutting off the
pattern of the nut. The female die proper is fitted to slide backwards and
forwards in the matrix before described. The bar g, in which the die-is
formed, extends some four or five inches above the matrix, as seen at g', the
upper end being firmly secured to the mandrel H. This mandrel is arranged
to slide longitudinally in bearings h, h¹, the former being attached to the bed
plate of the machine and the latter to the head 6 of the mandrel C. Any
movement of the bar g' carries with it the mandrel H, and the bar g, carrying
the female die, is after each punching operation again drawn forward by the
retreating movement of the mandril C; the bearing h³ upon the head b striking
against the head of the mandrel H to effect this result. The cam A¹, as
herein-before stated, moves the mandrel C a little forward immediately after
the discharge of the nut, upon which movement the spring H", the lower end
of which is attached to the bed plate and the upper end to the mandrel H,
'carries the mandrel H as far back as the head on the rod H¹ will allow, and
with it the bar g' and female die g, for the purpose of making a clear space
for the introduction of the heated bar from which the nut is cut. A rod H¹,
having a head on the outer end, passes through the bar g', and is screwed into
the head b of the mandrel C, and so adjusted as to length that when the
mandrel C is carried back as far as the cams B will carry it, the face of the
female die 'g is brought a trifle forward of the end of the punch, so that the
formed nut is entirely released from the punch, the female die and punch
occupying the relative position shown in Figure 3. In forming the nut the
female die is driven back by the pressure of the male die against the nut
blank to the position shown in Figure 8. The punch I passes through an
elevated portion of the bed plate, as seen at I', and forward of that point is
firmly supported in guides I", which can be removed at pleasure and replaced
by others by loosening the screws J of the cap. The punch I can be adjusted
forward by means of the screw bolts K in Figure 2. The punch I, as herein-
before stated, is imbedded firmly in the guides I", to prevent it from springing
or bending from the pressure brought upon it in the formation of the nut, and
in addition to this it can be adjusted endwise by means of the cross head K
and screw bolts K above referred to. The screw bolts K. are firmly attached
to the elevated portion I, and both pass through the ends of the cross head K',
and nuts are screwed upon the bolts outside of the cross head, by turning
which the cross head can be set up closer to the bed. The outer end of the
punch I rests against the inner face of the cross head K¹, the cross head thus
sustaining all the pressure that is brought to bear upon the punch in the
formation of the nut. By the adjustment of the nut on the ends of the screw

page_text: bolt K the punch I can be set back or forward, as may be desired, and the
firmness with which it is griped by the guides I" is sufficient to hold it sta-
tionary while the nut is being forced off from it. The male and female dies
E and g, the head plate G, movable plate f, and punch I are made in sets
and used as such. In using this machine the shaft S is put in motion in the
direction of the arrow, a heated bar of proper size is introduced at L, and the
forward movement of the mandrel C cuts off the blank punches and presses
the same into a nut in the manner before described. The retreating of the
mandrel C draws the female die forward so as to pull the formed nut off the
punch, and the cam A shoves back the female die a little distance so as to
leave a clear passage for the bar for the succeeding operation. The bar
should be turned or reversed in position for every nut formed.
Having thus fully described and ascertained the nature of my Invention,
and shown how the same may be conveniently carried into effect, I wish it
understood that I do not confine myself to the exact details set forth; but
I claim,
First, the mandrel H, bar g', and rod H', for removing the formed nut from
the punch, in the manner substantially set forth, by the retreating action of
the mandrel C.
Second, I claim the male die E and plate G, with the sides F", F", and
plate f of the matrix, arranged substantially as and for the purpose specified.
Third, I claim the recess F' in the side F", and the corresponding pro-
jection G in the head plate G', for the purpose described.
Fourth, I claim securing the male die in place by means of the jamb block e
and set screw d, constructed and arranged substantially as described.
Fifth, I claim the herein described device or its equivalents for steadying
and adjusting the punch.
Sixth, I claim the friction plate D, arranged and used substantially as set
forth.
Seventh, I claim the cams A and A', B and B', with the mandrel C,
arranged and operating substantially as specified.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this Fourteenth day of April, in the year of our
Lord One thousand eight hundred and sixy-four.
GEORGE HASELTINE.
(L.S.)