Improvements in Rolling Machines.
Year: 1893

page_text: Date of Application, 2nd June, 1893-Accepted, 8th July, 1893
COMPLETE SPECIFICATION.
Improvements in Rolling Machines.
I, AARON BURNSIDE SHIPPEE, of Providence, in the County of Providence,
and State of Rhode Island, United States of America, Gentleman, 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:—
This invention relates to mechanism for obtaining a varying decrease of feed in
closing rolls or dies, in machines for operating them, when articles are operated
upon that require several successive passages between the rolls, to produce the
necessary reduction, and is intended more especially for the operation of rolling
cold metallic work many times between the rolls without any intermediate annealing
to soften them.
It is well-known that in rolling cold metal repeatedly without annealing, it
becomes denser and harder at each operation, and consequently will bear less and
less reduction at each succeeding rolling.
It is to produce this decrease of feed automatically and regularly that this
mechanism is devised, that it shall be precisely the same in any number of articles
and produce uniform results. It is illustrated in the accompanying drawings.
Fig. 1 is an end elevation of a machine with the mechanism attached.
Figs. 2 to 11 show the parts more or less in detail, or in combination with each
other.
The following is a description of the parts of the mechanism and their
arrangement and combination when ready for use.
The shaft u which is held in a bearing in the leg frame and plate S, has a
ratchet wheel v, secured to it, (see Fig. 5). This ratchet wheel e, is moved by a
pawl w, pivoted to the arm y, that is held loosely on the shaft u'. The army, is
connected by a rod to the arm a, held on a stud m, fast in the leg frame, and has
its other end connected by the rod b, to an adjustable arm c, secured to the shaft E,
connected to the driving gear of the machine, so as to revolve in unison with the
rolls N, N, Fig. 1. A cut-off disk f, and an auxiliary ratchet wheel d, are held
loosely on the shaft u¹ with a pawl e, pivoted to an arm g, also loose on the same
shaft, Figs. 5 and 6. The disk f, is shown in elevation in Fig. 9. The upper part
is of a slightly larger diameter than the outer ends of the ratchet teeth on the two
ratchet wheels v, and d, so that the smaller circle of part of the disk, will allow the
pawls w and e, to catch and operate their respective ratchet wheels until the larger
diameter of the disk comes under a portion of each pawl that overhangs it, when the
pawls will be lifted out of range with the ratchet teeth and cease to move the wheels.
The ratchet wheel d, is moved in the opposite direction to the wheel v, by a screw i, in
the arm h, which is held on the same stud as lever a, and is moved by a stud), in
the end of the arm b, which, when the arm rises, strikes against the stud k, in a
short, adjustable piece secured to the end of lever h, Fig. 5, so that the arm b,
operates wheel v, by the lever a, and the stud n', in the slot when the arm c, goes
down, and the wheel d, by the arm h, and stud j, when it goes up; the slot in the
end of the arm b, being for the purpose of limiting the time of moving the wheel v,
to less than one-third of a revolution of the rolls N, N, the other two-thirds being
required for rolling the blank. A three-armed bar S has two of its arms secured
to the studs m, and 6', and supports the outer end of shaft u¹ in the lower end of
its third arm.
This plate has an adjustable stop plate n, bolted to it, for the
lever o, to strike against when the ratchet wheel d, has reached its limit, Fig. 6.
The lever o, is pivoted to the wheel d, near its outer edge, and a stud r, fast by its
inner end in disk f, extends out through an oval opening in the wheel d, and enters

page_text: a hole in the lever o, (see Fig. 9) so that when the lever o, is moved on it pivot the
stud r, will move the disk f, back or forward with regard to the wheel d.
The lever o is held back of a spring p, to the wheel d, and a stop-plate s pivoted
to the wheel d, is made adjustable by a slot and screw at its inner end by which it can
be set to cut off any or all motion of the stud r, in the opening in wheel d, the
amount of motion allowed being determined accurately by a set of graduated lines t,
made on the face of the wheel d. As the arm c in revolving goes down it causes
the lever a, by arm b, to move the ratchet wheel v, by the pawl w, and drives the
feed gear S above, by gear t' on shaft u¹. The arm e, by its upward movement
moves the lever h, by stud j, which causes the ratchet wheel d, to move by the
pawle, and with it the disk f. The feed of the wheel v, by the pawl w, continues
until the disk f, is moved around by the pawl e, and brings the rise v³, Figs. 9 and 5,
on the disk under the part of the pawl w, that projects half way over the disk.
This rise approaches the pawl w, at the finishing end of its working motion.
I will suppose that the pawl w, is feeding the wheel v, thirty five teeth at a
stroke. This it continues to do for seven strokes; in the meantime the pawl e, is
moving the wheel d, say four teeth at a stroke to bring the rise v³ on the disk over
in front of the pawl w, and it reaches it at the end of the seventh stroke, so that
on the eighth stroke, it will overlap and lift the pawl w, out of the teeth of its wheel,
four teeth from the end so it will have fed that. time, thirty one teeth; at the next
stroke it will overlap four teeth more, leaving a feed of twenty seven teeth. This
decrease of four teeth at a time, continues for seven strokes, leaving only seven
teeth; but at the termination of the last seventh stroke, the end of lever o, has
been set to arrive at the corner of the plate n, so that on the back stroke of the
pawl w, and forward stroke of the pawl e, the cut-off lever o, strikes its outer end
against the plate n, and the inner end, by means of the stud r, throws the disk f,
ahead such an additional number of teeth as it may be set to do by the stop-plate s³
as before described. This lessens the seven teeth left that much, in addition, to
the regular four teeth taken off as described by the wheel d. Now if the lever o is
set to move the disk f, ahead one tooth, this one with the four teeth of the pawl e,
will make five teeth of the seventh left at the end of the seventh stroke, to be taken
off by the eighth stroke, this would leave only two teeth of the seven for the ninth
stroke to finish the feed with; but if the lever o, had been set to move the disk f,
ahead two teeth of the wheel d, these two, with the four teeth of pawl e, would
make six to be taken off of the seven by the eighth stroke, and only one tooth
would be left for the ninth stroke. This motion of the ratchet wheel v, with
all its modifications, is conveyed to the devices that move the rolls or dies toward
each other through the shaft u' and gear & fast thereon, between the arm y, and
frame.
In Fig. 6 is shown a check motion consisting of a hollow arm that carries a
spring detent (see Fig. 4) the end of which drops into the teeth of the wheel d,
and checks its motion sufficiently to prevent it from being carried back by the
return motion of the pawl e, or too far ahead by its momentum.
In Fig. 6, are shown the devices that determine the amount of motion given
pawl e. A screw i, held in the end of the arm h, can be set to bring the pawl e, to
stop at the same point as the pawl w, and the plate o¹, on the arm 9, can be set by
the screw c² in the slot to determine the starting point of the wheel d, by bringing
the stud in that wheel that holds the spring p, up against the plate o¹..
Figs. 2 and 3, illustrate a friction device for checking the motion of arm a
on stud m. It consists of a copper block 3 held in a recess in the arm and subject
to the pressure of a set screw in the arm to increase or lessen the friction on
the stud.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In a die feeding mechanism for die onerating machines the combination of a

page_text: main ratchet wheel and actuating pawl, receiving motion from the driving shaft to
operate the feed, an auxiliary ratchet wheel and actuating pawl, also receiving
motion from the driving shaft adapted to modify the action of the pawl on the
main ratchet wheel, a disk concentric with the two ratchet wheels and actuated
by the auxiliary ratchet wheel, and having its diameter enlarged for a portion
of its circumference to raise the pawls of one or both ratchet wheels, as it may
be set.
2. In a die feeding mechanism for die operating machines, a main rachet wheel
and actuating pawl receiving motion from the driving shaft to operate the feed, an
auxiliary ratchet wheel and actuating pawl also receiving motion from the driving
shaft adapted to modify the action of the pawl on the main ratchet wheel, a disk
placed concentric with the two ratchet wheels and actuated by the auxiliary ratchet
wheel and having its diameter enlarged for a portion of its circumference, to raise
the pawls of one or both ratchet wheels as it may be set, in combination with a
lever pivoted to the auxiliary ratchet wheel, and arranged to move said disk by a
stud fast therein and projecting through a hole in said auxiliary ratchet wheel,
when said lever strikes a stationary stop-plate substantially as described.
Dated thie 2nd day of June 1893
W. P. THOMPSON & BOULT,
Agents for the Applicant.