Improvements in Machinery or Apparatus for Finishing Nails.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Finishing Nails.
I, AUGUST BERNHARD JOHANSSON KOLTEN of 34 Saint Andrew Square, Edinburgh,
in the County of Mid-Lothian, Engineer, 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 :-
5 This Invention relates to machinery or apparatus for finishing or completing the
manufacture of horse shoe and other nails from "blanks" produced by other machines
as for example by the machine for which Letters Patent of the United Kingdom bearing
date the 29th day of October 1887 No. 14736 were granted to Johan Oliver
Johansson Kolten and myself or by the machine for which I have applied for Letters
Patent under date the 23rd day of November, 1889 No. 18785.
.
The machine constructed in accordance with the present invention is illustrated on
the two accompanying sheets of drawings. Figure 1 sheet 1 being a side elevation.
Figure 2 (sheet 2) a plan and figures 3, 4, 5 and 6 (sheet 1) detailed views herein-
after more particularly referred to.
s shown by these figures the apparatus consists of a table A on and by which the
rent parts of the mechanism are carried. On the table there is supported in
ings a shaft B carrying a friction or other driving pulley C and a spur pinion C¹
ch through the usual train of spur gearing operates the finishing rollers these
ag as in other arrangements of finishing machines formed with die grooves on their
eripheries. The blanks are fed to the first pair of finishing rolls through a
Eube a and after being acted on by the said rollers they pass through a channel made
in the framing to a disc b (illustrated more particularly by the detailed. views
6gures 3 and 4) which is secured upon one end of a shaft y whereon there is
so, keyed a ratchet wheel b¹ in conjunction with which a pawl b is provided.
e pawl is centred upon a pin or stud secured in the end of a cross bar 6
entred loosely on the shaft y and in conjunction with the bar 64 there is provided
swinging lever c centred on the framing of the machine at c¹ the said lever having
t or near its upper end a slot through which the shaft y passes. Above the slot there
is fixed in the lever a pin c³ passing through a slot made in the arm b³ of the bar 6*
as shown. At c³ there is connected to the lever ca rod c which is pushed forward
by the action of a coil spring c confined between a collar on the rod and a fixed
abutment on the machine the rod being drawn back by an eccentric co secured
on the shaft B and to the strap of which the rod is connected.
هم
By the action of the eccentric rod the lever c is rocked or swung and causes
the pawl 6 to turn the disc b through an arc equal to one fourth of a revolution. In
the disc two channels or passages are made at right angles to eachother these
tending diametrically across the disc and being covered by a removable plate on the
sc's side. Each forward movement of the pawl 6 so turns. the disc.as: to bring an
end of one of its channels opposite or in line with the channel made in the framing
below the first pair of rolls so that the blank last operated on by these rolls falls
into the channel in the disc from the lower end of which it is prevented passing out
by a curved stop plate a secured to the framing.of the machine.
To prevent the disc b from moving too far at each impulse a pawl d centred at d
is provided the said pawl being forced by a spring d' into notches w cut in the back
of the disc..
The pawl d has as seen at figure 4 a tail piece d. formed on it to which a rod e is
connected by, a ball and socket or equivalent joint the other end of the rod having a
head or knob with which an arm 6* made on the bar 6 comes in contact as the lever c
is swung forward the arm. 6 pushing the rod e and releasing the pawlid to enable
the pawl.b to give the disc another quarter turn.
In conjunction with. the feeding, tube a there is furnished an interceptor consisting

page_text: of a lever centred at fl and connected at its upper end by a. pin or joint to a
horizontal bar the point of which enters the tube through a slot in the back.
The ratchet wheel 61 has on one side four equi-distant projecting pins which as
the wheel is rotated act in succession on the lower end of the lever the pins
being so shaped as to cause the lever to move through an arc and withdraw the
interceptor barf from the tube a leaving the channel free for the passage of a.
blank to the rolls x.
When by the action of the pawl 6 the channel in the disc b with a blank in it
has been moved from vertical to horizontal position a pitman g passes into the
channel and feeds the blank to the finishing rolls placed at right angles to the
rollers and by the die grooves of which it is caught and further operated upon.
The pitman is connected at gl. to a lever g' contred at g' on the table A and attached
at g to one end of a rod whose other extremity is connected to the lower end of
a lever g operated by a cam g' secured on the main shaft B. On the rod go a spiral
spring is situated one end of the spring being connected to the rod and the other
end to a stationary part of the machine. The spring forces the pitman g into the
channels of the disc b and the cam acting on the lever go withdraws it.
From between the second pair of rollers ¹ the nail passes into a guideway or
channel u opposite the end of which a gripping arrangement seen more particularly
in detail at figures 5 and 6 is situated. The said arrangement consists of a slide H
secured to a fixed part of the machine and beneath which is supported a sliding
plate H¹ carrying the gripper the plate H¹ being guided in its movement by the
plate H which embraces the upper surface and edges of the slide H and is
secured to the plate H¹ by screws or equivalent means. The plate H is reciprocated
by the jaw which is attached to it and to the guide H¹ by a bolt the latter.
working in a slot in the slide H. The jaw is also connected to and receives its
motion from a rocking lever h¹ actuated by an eccentric ² secured on the main
shaft B.
As seen at figure 5 the holes at the ends of both the upper and under side of
the jaw h through which the pin passes are slotted in order that the gripper may
rest or dwell shortly at the termination of its forward and backward movements. At
the forward end of the jaw a link is connected by a pin the said link being
attached at its other end to the plate H₁ by a pin K' whereon there is also centred:
an S shaped lever n the lever being further secured to the link k by a pin or stud as
shewn at figures 2 and 6. The ends of the lever in which constitute inclined planes
bear upon pins or rollers n' fixed or centred on the rear extremities of two levers
or jaws l centred at on the plate H¹ and having at their forward ends gripping
pieces by which the head of the nail is caught as it is delivered from the guide or
channel u, the nail being by this gripper arrangement drawn rearwards until the
point of it comes over the die o and under the punch p which is actuated in any
usual way from the main shaft B to descend on the end of the nail and finish the
point by shearing off the superfluous metal. The gripping jaws are caused to
seize and hold the nail by the action of a spring m the spring closing the jaws on
the completion of the forward movement of the sliding plate H' and whilst the
jaw his retiring so as to bring the forward end of its slot * in contact with the
pin v. Whilst the said end of the slot is in contanct with the pin vand
during the backward-movement of the slide H to bring the nail under the
punch p the jaws continue to hold the nail the punch descending at the
termination of the backward stroke. After the punch has operated the jaw h
moves forward to bring the rear end of its slot * into contact with the pin and
in so doing it, through the intervention of the link k turns the pin k¹ and
lever n whose inclined surfaces acting on the pins or rollers n¹ compress the
spring m and open the jaws the nail so released passing out of the machine the
open jaws moving forward to grasp another nail. To moderate the side thrust of
the spring m against the guide H springs ii are provided these being carried on
studs and bearing on studs..pressing against the guide. H. and passing through
the plate H

page_text: As seen in plan at figure 2 a clearing arrangement is provided in conjunction with
the gripper to remove the scrap or superfluous metal cut off by the punch p in
the event of such scrap not of its own accord passing out of the machine through
an opening made at the side of the die o, for that purpose. The clearer consists of
an arm which is knuckle jointed at to a bar working in's guide secured to
the table A the said bar being connected at its outer end to a lever centred
at and operated in one direction by a spring and in the opposite direction by a
cam secured on the main shaft B. The armr has a spring q which acting against
a pin fixed in the arm straightens it into line with the bar and maintains it. in
contact with one jaw of the grippers as the latter retires. When the punch p has
sheared off the metal and has risen again the clearer is pushed inwards by the
lever and removes the scrap from the die o the arm r being thereafter forced to
one side by the jaw whilst advancing pushing against it.
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. The general arrangement and combination of parts constituting the improved
nail finishing machine subtantially as hereinbefore described with reference to the
drawings hereunto appended.
2. In a machine for finishing horse shoe and other nails the combination with two
pairs of finishing rollers placed at right angles to each other of the rotating disc and
of the interceptor acting substantially as described with reference to the accompanying
drawings.
3. In a machine for finishing horse shoe and other nails the combination of parta
constituting the gripping arrangement substantially as hereinbefore described and
shown on the drawings annexed.
4. In a machine of the class set forth the combination of the gripper and clearer
substantially as described with reference to the appended drawings.
Dated this Second day of April 1890.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.
In the name of the Applicant, on page 1, line 1, and on head lines
pages 2 and 3, also in the same name on page 1, line 9,