Improvements in Nail Making Machines.
Year: 1893

page_text: Date of Application, 13th Mar., 1893
Complete Specification Left, 12th Dec., 1893-Accepted, 13th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Nail Making Machines.
We, THE PARKIN PATENT NAIL COMPANY LIMITED, and GEORGE HENRY
PARKIN of the said Company, of Chapel Hill Mills, Huddersfield, Yorkshire,
Nail Manufacturers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to machines for making nails from sheets of steel or other
metal, and has reference to the mounting of and to means for reciprocating or raising
the feed barrel through which the length of metal is fed to the cutter. The said
feed barrel is driven intermittently from a star wheel motion through the medium
of a spur wheel gearing with a pinion on the end of the barrel, which in addition to
being intermittently rotated is raised at the opposite or delivery end after each
descent of the cutter for the purpose of allowing said barrel to be turned round to
present the same angle of metal to the cutter at each descent, the barrel being so
mounted as to allow for this vibratory or rising and falling motion.
The present
method of mounting the feed barrel however, is defective in that the pinion thereon
is raised partly out of gear with the teeth of the driver and frequently causes
breakage of the parts. The motion for raising and lowering the barrel is also
faulty and unsteady by reason of the friction bowl on the end of the lever or arm
connected to or with the barrel being actuated by an internal cam and always
bearing upon the surface thereof, this unsteadiness being further increased by any
irregularities of surface there may be on the internal cam and causing bad or
imperfect work to be done.
The object of our invention is to remedy the defects named, increase the
efficiency of the machine and prevent waste of material by imperfect cutting or
stamping.
In carrying out our invention we employ suitable brackets or pedestals to support
the feed barrel, and mounted on studs secured to the bracket or pedestal at the
feeding end of the barrel is a bearing in which the barrel is secured.
The pivot or
axis upon which the bearing is hinged, is arranged at right angles to the axis of
the barrel and lineable with the centre of the pinion whose movement therefore
when the barrel is tilted or raised at the opposite end is imperceptible at the centre
and very slight at the outer edges of the teeth, whereby liability to breakage of
the teeth and damage to the parts is avoided. In order to raise the barrel at the
end nearest the cutter, we mount on the bottom or driving shaft of the machine a
disc or wheel having projecting teeth or studs arranged at equi distances apart
thereon and preferably secured by nuts or like means to said wheel, so as to be
removeable singly for renewal and other purposes, and to be interchangeable with
larger or smaller studs to regulate the lift of the barrel according to the size of
nail to be made. The lever which is connected with the feeding barrel for lifting
same is provided with a pulley or bowl of larger diameter than previously employed,
and this pulley or bowl is engaged by the projecting studs or teeth on the disc as
the latter rotates and is raised thereby and gives the requisite lift to the barrel to
allow of same being turned round; a bearing surface or stop piece in the second
pedestal limits the downward movement of the barrel so that the friction bowl is
kept clear of the periphery of the studded disc or wheel during the cutting action,
and consequently the barrel remains perfectly steady until again raised by a stud
on the wheel, said stop piece or bearing surface being also adjustable to increase or
diminish the extent of the downward movement of the barrel. The pedestals or
brackets are grooved and adapted to slide in corresponding ways to adjust them to

page_text: suit requirements, and the bearings supported therein and carrying the feed
barrel are pivotted so as to allow of the same being swivelled or turned around.
Dated this 11th day of March 1893.
TASKER & CROSSLEY,
Huddersfield, Agents.
Improvements in Nail Making Machines.
We, THE PARKIN PATENT NAIL COMPANY, LIMITED, and GEORGE HENRY
PARKIN, of the said Company, of Chapel Hill Mills, Huddersfield, Yorkshire,
Nail Manufacturers, 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 machines for making nails from sheets of steel or other
metal and has reference to the mounting of and to means for reciprocating or
raising the feed barrel through which the length of metal is fed to the cutter.
The said feed barrel is driven intermittently by means of a star wheel motion
through the medium of a spur wheel gearing with a pinion on the end of the barrel
and is also raised at the opposite or delivery end after each descent of the cutter
for the purpose of allowing for the partial rotation of the barrel to present the
same angle of metal to the cutter." The present method of mounting the feed
barrel is defective and frequently breakages occur by reason of the pinion on the
barrel being raised partly out of gear with its driver. The motion for raising and
lowering the feed barrel is also faulty and unsteady and causes imperfect work to
be done.
The object of our invention is to remedy the defects named, increase the efficiency
of the machine, and prevent waste of material by imperfect cutting.
In order that this may be accomplished we employ the means hereinafter fully
described with reference to the accompanying drawings illustrating same,
wherein :-
Fig. 1 is side elevation of so much of a nail making machine as is necessary to:
shew the application of our improvements thereto.
Fig. 2 is transverse section taken on line r, a, of Fig. 1.
Fig. 3 is end elevation on line y, y, of Fig. 1, and;
Fig. 4 is plan view of part of Fig. 3.
In the drawings a represents the framing of the machine, the headstock, e the a
cutter working therein, and d the feed barrel driven intermittently from the pin
wheel e on the main driving shaft through the medium of the star wheel 9 spur
wheel and pinion on said barrel. is the length of metal from which the nails
are to be cut and is secured in the clip or between the jaws at one end of the rod /
whose opposite end is inserted into the block adapted to be slided down the 4
inclined plane m by the action of weights n suspended from the ends of cords n¹ passing
over pulleys » and secured to said block, and to feed the metal j through the feed
barrel to the cutter.
The aforesaid parts are arranged and operated substantially in the same manner
as at present.
q
4
Instead of the pinion and barrel d being mounted as formerly, we employ a
trunnion p to form the bearing for the barrel d which passes through it and is
free to rotate therein, the said trunnion or yoke shaped bearing having studs or
pins p projecting from the outer sides thereof which are journalled in the bracket
bolted to the frame a and form the pivots upon which the barrel is movable up and 5
down. The pinion is secured to the barrel so as to rotate same by means of a
steel clip bolted to a lug on the face of the pinion and drawn tightly against
the barrel by nut as shewn clearly in Figs. 3 and 4.

page_text: The pinion is placed upon the barrel d centrally of the axis of the bearing
and as said axis is at right angles to the axis of the feed barrel it follows that when
the latter is moved upon its fulcra, as when raised at the opposite end so as to be
partly rotated, the movement of the said pinion will be almost imperceptable at the
centre and very slight at the outer edges of the teeth, whereby damage to or
breakage of the teeth of the pinion or its driver h owing to the two being partly
thrown out of gear as formerly is now avoided, and the parts work more smoothly..
The improved mechanism for raising the barrel at the end nearest the cutter c
consists of a disc or wheel s mounted on the bottom or main shaft and having
thereon projecting teeth or studs s¹ arranged at equi distances apart and preferably
secured thereto by nuts s2 or like means so as to be removable singly for renewal
and other purposes, and to be interchangeable with larger or smaller studs or teeth
to regulate the lift of the barrel d according to the size of nail to be made. The
levert for lifting the feed barrel is pivoted on the stud t¹ and provided with a
pulley or bowl 2 of larger diameter than previously employed, said bowl being
engaged successively by the projecting studs s' as the disc s rotates and the lever t
raised thereby, the latter, by means of a connecting rod or link u hinged thereto
and to lugs on the underside of the boss or bearing supporting the barrel, giving
the requisite lift to said barrel to enable it to be turned round to present the same
angle of metal to the cutter, as is understood by those conversant with this class
of machine.
A bearing surface or adjustable stop piece w in the pedestal ¹ limits the down-.
ward movement of the feed barrel aud is preferably adjusted so as to keep the
friction bowl t2 clear of the periphery of the discs during the dwell allowed for
the cutting action and thus ensure perfect steadiness of the barrel; said adjustable
stop piece also serving to increase or diminish the extent of the downward move-
ment of the barrel as may be required.
A lever arm w² pivoted to the pedestal w¹ and held in contact with the projection
on the upper side of the boss or bearing v by a spring w³ connected to the free end
of said lever arm and to the stud w fixed to the frame ensures the descent of the
barrel after each lift and assists in keeping the said barrel steady when a nail is
being cut off the metal strip j.
Having now particularly described and ascertained the nature of our said inven--
tion, and in what manner the same is to be performed, we declare that what we
claim is
Firstly. In nail making machines, the combination, with a feed barrel, of a
trunnion or bearing such as p for supporting the end of the barrel and forming the
pivot about which said barrel is movable, the pins or studs p' of said bearing being
arranged at right angles to the axis of the barrel d the pinion i placed lineable
therewith in manner and for purposes substantially as herein shewn and described.
Secondly. In nail making machines, the combination of the disc s having projecting
teeth or studs s¹ or equivalent cam surfaces on its periphery, friction bowl t² adapted
to be engaged thereby, and levert carrying said bowl and connected by rod to the
boss or bearing movable vertically in the pedestal wall arranged and operating
in the manner and for the purposes substantially as shewn and described.
Thirdly. In nail making machines, a disc such as s provided with projecting teeth
or studs for giving the requisite lift to the barrel, said studs being bolted to the
disc so as to be removable and interchangeable with larger or smaller studs to vary
the lift as found necessary, and an adjustable bearing surface or stop piece to limit.
the downward movement of the barrel substantially as herein set forth.
Dated this
de of December 1802
TASKER & CROSSLEY,
Huddersfield, Agents.