Improvements in Punching and Nut-stamping Machines.
Year: 1890

page_text: te of Application, 31st July, 1890-Accepted, 4th Oct., 1890
COMPLETE SPECIFICATION.
Improvements in Punching and Nut-stamping Machines.
I, EDWARD HOLLINGWORTH, of Dobcross Loom Works, Dobcross, in the County of
York, Loom Maker, 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 has been communicated to me from abroad by George Webb, of .
Pawtucket, Rhode Island, one of the United States of America, Engineer.
My invention relates to a certain class of press used in chamfering or cupping the.
heads of nuts. As is well known, in this description of machinery, the greatest
pressure on the machine occurs during the time the chamfering or cupping of the nut
takes place, consequently certain teeth in the driving wheel are bearing an extra
strain at every revolution thereof, from which cause it sometimes happens that these
said teeth are broken. To prevent such breakages is the chief object of my invention.
My improvements in such machines consist in the use of toothed wheels having an
enlarged boss or hub made with a series of four or more holes or openings equidistant
from each other. In combination with this wheel I use a face plate or clutch block
having holes corresponding to those made in the boss of the wheel, together with a
balance wheel made with an oval or clougated boss or hub, all of which parts are
mounted on the same shaft. The toothed wheel is placed loosely on its shaft and
occupies a position between the face plate and the balance wheel. Two clutch pins
are passed through the holes made in the several parts mentioned and made secure by
nuts for the purpose of binding and keeping together such said parts, and when the
machine has worked with the parts thus fastened together a suitable length of time,
the two clutch pins are removed and the gear wheel revolved on its axle to present
other holes opposite those in the balance wheel and face plate, so that on the pins
being inserted and made secure, other teeth in the said wheel are brought into position
to bear the extra strain put upon the machine when chamfering or cupping the nuts,
consequently the machine will not so easily be broken.
In order that my invention may be better understood, I will now make reference to
the annexed sheet of drawings illustrative thereof, Fig. 1 of the drawings being a
side elevation of a press having my improvements applied thereto. Fig. 2 is. front
elevation of same, whilst Figs. 3. 4, and 5 are details of some of the parts. A is the
framework of the machine, B the main driving shaft having thereon the usual fast
and loose driving pulleys and fly wheel C. On the main shaft B is also mounted a
pinion wheel D in gear with and driving the wheel F, which is mounted loosely on
the shaft E. This wheel Fis made with an enlarged boss or hub provided with six or
other number of holes a, as shewn in detail Fig. 4, such holes in the boss being
arranged in pairs opposite each other and equidistant apart. As many holes a may be
made in the boss of the wheel as thought advisable, but there should at least be four,
and if the wheel is made with arms or spokes, it is desirable to locate these holes to
correspond radially with the said arms or spokes. A balance wheel is shewn at G,
seen in front elevation in Fig. 3, and it is made with an oval or elongated boss or hub
having a central opening B by which it is mounted upon the shaft E, and it is also
made with two holes Z arranged opposite each other to correspond with a pair of
holes made in the wheel F. The face plate or clutch block H is also mounted on
the shaft E and made with two holes corresponding in position with those of balance
wheel G and toothed wheel F. The wheel F is mounted loosely on the shaft E, but
the balance wheel G and face plate H are fastened thereon by key or other suitable
means, after which clutch pins I are inserted through one pair of holes and secured
by nuts, by which means the three parts are attached and made to revolve together,
when of necessity certain teeth in the wheel F will be compelled to bear the strain

page_text: put upon the machine when chamfering, but when it is thought expedient to put strain
upon other teeth in the said wheel F,. the clutch pins I are withdrawn, and the
wheel F, which is loose on its shaft, is partially turned around, bringing other holes a
opposite the holes in the balance wheel and face plate, when the said pins are put
back again so as to cause a new set of teeth to bear the strain when chamfering and
cupping.
.
The chamfering mechanism is the same as is commonly used. The shaft E has
mounted upon it an eccentric J surrounded by a collar K in two half-sections bolted
together through the bosses L or in any other convenient manner. The collar K is
made with a connecting rod M pivoted to the slide N, the latter working up and down
in grooves or guides O. In a socket of the slide N is the chamfering tool or
plunger P made secure thereon by set screws d; the revolution of the shaft E thus
gives a reciprocatory movement to the chamfering tool.
By the use of the face-plate and balance wheel and moveable pins I, the strain upon
the teeth of the wheels F can be periodically changed, such change of adjustment also
relieving the strain on the arms or spokes of the wheel F, whilst the weight and
momentum of the balance wheel G prevents the jumping of the machine which
hitherto happened as soon as the chamfering tool was released from its pressure on the
nut. The machine is also more steady in its action, and greater uniformity in the
chamfering mechanism is obtained.
.
My said improvements are applicable to punching machines as well as to presses.
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 :-
Firstly. In a nut chamfering press, the use of the toothed wheel F made with a
series of holes in its boss or hub, in combination with face plate or clutch block H,
balance wheel G, bound together, but capable of adjustment for purposes set forth and
in the manner substantially as described and shewn.
Secondly. In a nut chamfering press, a clutch block and balance wheel fastened on
a shaft, such block and balance wheel having two holes opposite each other, in com-
bination with a toothed wheel mounted loosely on the same shaft and having a series
of holes in positions corresponding to those in the balance wheel and clutch, all of
which are made secure, forming one integral part, and made to revolve together for
purposes described.
Dated this 29th day of July 1890.
TASKER & CROSSLEY,
Huddersfield and Halifax, Agents.