Improvements in Apparatus used in Making Spools or Bobbins.
Year: 1894

page_text: Date of Application, 8th Mar., 1894
Complete Specification Left, 6th Dec., 1894-Accepted, 19th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus used in Making Spools or Bobbins.
We, WILLIAM MCCROSSAN, Mechanic, and JOHN PAUL, Foreman Turner,
both in the employment of Messieurs Kerr and Company, Limited, Thread
Manufacturers, of Underwood Mills, Paisley, in the County of Renfrew, North.
Britain, do hereby declare the nature of this invention to be as follows, that is to
say:-
Our said invention comprises improvements in apparatus of the kind described
in our and John Pinkerton Kerr's Patent Specification No. 935 of 1893.
In the said apparatus a spool or bobbin is turned or shaped by cutters fixed on
two slides moved towards the work by springs and from the work by cams.
The
cutters on one slide take a roughing cut and act a little in advance of the cutters
on the other slide which latter finish the operation. If the roughing cutters are
obstructed or retarded in any way the finishing cutters are apt to operate too soon
and to become injured by acting on wood not sufficiently prepared by the roughing
cutters. One of the present improvements is for avoiding the injurious action, and
consists of a device for stopping the inward movement of the finishing cutters
when necessary.
A lever centered on a bracket fixed to the bench or frame, is
arranged to extend across from one slide to the other, and pins are fixed on the
sides of the slides to act in connection with the lever, the pin on the roughing slide
being over one end of the lever and the pin on the finishing slide under the other
end of the lever. If the roughing slide advances properly its pin depresses one
end of the lever, and elevates the other end clear of the pin of the finishing slide;
but if the roughing slide is stopped or delayed the lever is not moved and its
further end or a notch in it engages with the pin of the finishing slide and stops the
inward movement of that slide.
Another improvement is applicable to the boring apparatus. Instead of moving
a certain star wheel which holds the wood blanks whilst being bored by means of
levers and connections from a rotating cam also working other parts, a separate
cam is, by the present invention employed for the purpose, whereby a better
arrangement and action of the parts is obtainable.
Dated this Seventh day of March 1894.
EDMUND HUNT,
Applicants' Agent.
Improvements in Apparatus used in Making Spools or Bobbins.
We, WILLIAM MCCROSSAN, Mechanic, and JOHN PAUL, Foreman Turner,
both in the employment of Messieurs Kerr and Company, Limited, Thread
Manufacturers, Underwood Mills, Paisley, in the County of Renfrew, North
Britain, 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, that is to say:--
Our said invention comprises improvements in apparatus of the kind described
in our and John Pinkerton Kerr's Patent Specification No. 935 of 1893.
In the said apparatus a spool or bobbin is turned or shaped by roughing and

page_text: finishing cutters fixed on two slides moved towards the work by springs and from
the work by cams.
One of the present improvements consists of a device for
delaying the inward movement of the finishing cutters when necessary.
Another improvement is applicable to the boring apparatus. Instead of moving
a certain star wheel which holds the wood blanks whilst being bored by means of
levers and connections from a rotating cam also working other parts, a separate
cam is, by the present invention employed for the purpose, whereby a better
arrangement and action of the parts is obtainable.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append a sheet of explanatory drawings
to be hereinafter referred to and showing our improvements.
Figure, 1, on the accompanying sheet of drawings is a transverse vertical section
of a part of the apparatus sufficient to show the application of one of our
improvements. Figure, 2, is a side elevation of the device itself. Figure, 3, is a
horizontal section, Figure, 4, a back elevation and Figuré, 5, a transverse section
showing the application of the separate cam for moving the star wheel.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated; and such of the parts shown as are
the same as parts shown and described in our said earlier Specification are marked
with the same reference letters and numerals as in that Specification.
A spool or bobbin is turned or shaped by cutters (not shown) fixed on two
slides, J1, K1, Figure, 1, fitted on bracket guides, J, K, bolted to a bench
frame, A4, of the apparatus, the slides, J 1, K1, being moved towards the work
by a pair of springs, P, and from the work by a cam, N 5, acting through curved
levers, N 1, N 2, on arms, J 4, K 8, fixed to the slides, J1, K 1. The cutters on
one slide, J 1, take a roughing cut and act a little in advance of the cutters on the
other slide, K1, which latter finish the operation. If the roughing cutters are
obstructed or retarded in any way the finishing cutters are apt to operate too soon
and to become injured by acting on wood not sufficiently prepared by the roughing
cutters. The improvement shown in Figures, 1, and, 2, is for avoiding this
injurious action, and consists of a device for delaying the inward movement of the
finishing cutters when necessary. A lever, P 5, centered on a bracket, P 6, fixed
to the bench frame, A 4, is arranged to extend across from one slide, J 1, to the
other, K 1, and pins, P7, P8, are fixed on the sides of the slides to act in con-
nection with the lever, P 5, the pin, P 7, on the slide, J 1, being over one end of
the lever and the pin on the slide, K 1, under the other end of the lever. If the
slide, J 1, advances properly its pin, P 7, on which is a small anti-friction roller,
acts on an adjustable cam block, Q1, on one end of the lever, P 5, depressing that
end and elevating the other end clear of the pin, P 8, on the slide, K 1; in which
position the parts are shown in Figure, 1. If the slide, J1, is stopped or delayed
the lever, P5, is not moved and an adjustable cam block, Q2, on its further end
(or it might be a notch in it) engages with the pin, P 8, of the slide, K 1, and stops
the inward movement of that slide, in which position the lever and pins are shown in
Figure, 2, the dotted lines in that figure showing the directions of movement of the
slides.
The improvement applicable to the boring apparatus is shown in Figures, 3, 4,
and, 5. Instead of moving a certain star wheel (not shown) which holds the wood
blanks whilst being bored by means of levers and connections from a rotating
cam, U 2, also working other parts, a separate cam, Q 3, is, by the present invention
employed for the purpose. This cam, Q3, which is fast on the shaft, U 1, acts on
pins, 4, 5, on the ends of rocking levers, Q6, Q7, centered on the framing,
the lever, Q6, being connected by a link, Q8, with a third rocking lever, Q9, also
centered on the framing. The rocking levers, Q7, Q9, are each connected by
rods, V 5, V 6, (made with a right-and-left screw coupling for adjustment as to
length) to the levers for acting on the star wheel, these levers and the star wheel
not being shown. By this means a better arrangement and action of the parts, is
obtainable.

page_text: 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 :
1. In apparatus of the kind to which the invention relates providing a lever and
pins in connection with the tool slides substantially as and for the purposes
herein before described and as shown in Figures, 1, and 2, of the accompanying
drawings.
2. In apparatus of the kind to which the invention relates providing a separate
cam acting through rocking levers on the parts for actuating the star wheel of
the boring apparatus substantially as herein before described with reference to
Figures, 3, 4, and 5, of the accompanying drawings.
Dated this Fifth day of December 1894.
EDMUND HUNT,
Applicants' Agent.