An Improvement in the Arrangement for Driving Vibrating Combs or Rocking Shafts on Carding Engines or other Machinery.
Year: 1896

page_text: Date of Application, 11th Feb., 1896
Complete Specification Left, 24 h Sept., 1896-Accepted, 24th Oct., 1896.
PROVISIONAL SPECIFICATION.
An Improvement in the Arrangement for Driving Vibrating Combs
or Rocking Shafts on Carding Engines or other Machinery.
I JAMES MANDREW of No. 56 Brook Street Ashton-under-Lyne, in the
County of Lancaster, Stripper and Grinder in Cotton Mill, do hereby declare the
nature of this invention to be as follows:-
The present method of driving vibrating combs on carding engines &c., for cotton
or other textile machines, by means of a cam or eccentric arrangement is faulty,
inasmuch as it possesses dead centres, and is therefore liable to cease working at any
moment, and thus cause the work to be spoiled.
My improvement consists in taking away the present. cam, and substituting a
triple eccentric, working in such a manner between a specially constructed fork,
fixed on the end of vibrating comb, as to obviate the above defect and as it will
have no dead centres it cannot stop and spoil the work; at the same time the comb
will vibrate much quicker without any increase in the speed of the shaft carrying
the cam or eccentric, and will consequently produce better and more regular
work.
My invention is also applicable to shafts requiring a rocking motion on any other
kind of machinery.
February 10th 1896.
JAMES MANDREW
An Improvement in the Arrangement for Driving Vibrating Combs
or Rocking Shafts on Carding Engines or other Machinery.
I, JAMES MC ANDREW, of 56 Brook Street, Ashton-under-Lyne, in the County
of Lancaster, Stripper and Grinder in Cotton Mill, 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:-
The present method of driving the oscillating doffer combs of carding engines
for cotton and other fibres by means of a cam or eccentric I consider faulty.
By my improvement I take away the present cam or eccentric and substitute
a triple eccentric or three toothed cam working in a specially constructed fork
attached to the comb shaft by which the desired oscillation is given to the
comb.
It will be fully described with reference to the accompanying drawing in which
is shown a section through the eccentric box of a doffer comb.
On the end of the comb shaft AI affix a fork B constructed of such a shape
as to engage or work in conjunction with a triple eccentric or three toothed
cam C of the shape shown. The ends b of the fork B are constructed so as to
follow or press against the teeth of the cam C as it is rotated first at one side
and then at the other whereby a positive oscillation is imparted to the fork.
Each tooth of the cam C first comes in contact with the lower edge of one side of

page_text: the fork B pressing it in one direction and then when the point of the tooth has
passed to the inside of the fork the preceding tooth engages with the interior
of the opposite side of the fork and moves it in the opposite direction and
so on.
I consider that by my present improvement I obviate the defects of the present
mechanism and also obtain an increased speed of oscillation without increasing the
speed of the shaft carrying the cam or eccentric.
My invention is also applicable to shafts requiring a rocking or oscillating motion
in other kinds of machinery.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be applied I declare that what I
claim is :-
1. The arrangement of apparatus for driving the oscillating or vibrating combs
of carding engines or rocking or oscillating shafts of other machinery substantially
as described and shown.
2. The combination with the shaft A of the vibrating or oscillating comb of
carding engines of the fork B attached to the shaft and the triple eccentric or cam C
engaging therewith to give an oscillating movement substantially as described and
shown.
Dated this 23rd day of September 1896.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.