AN IMPROVED METHOD OF AND APPARATUS FOR OPERATING THE DABBING BRUSH OF COMBING MACHINES
Year: 1884

page_text: I, HENRY CALVERT of Prospect Place Huddersfield, Yorkshire, Mechanic do
hereby declare the nature of my invention for "AN IMPROVED METHOD OF AND
APPARATUS FOR OPERATING THE DABBING BRUSH OF COMBING MACHINES," to be as
follows:-
The object of my Invention is to employ new and effective means for giving
a quick reciprocatory. motion to the well known dabbing brush employed in
"Noble's" and other combing machines.
The means I employ for imparting the downward motion consists of two, three,
or more tappits which are fixed upon the top driving shaft, or other going part of
the machine.
These tappits are cast on one boss and in their rotation act upon an anti-friction
roller on the upper end of the rod or slide to which the dabbing brush is attached,
consequently for every revolution of the driving shaft, two, three, or other number
of downstrokes are given to the brush, according to the number of tappits.
The upward motion of the dabbing brush is imparted by a strong spiral spring
which works between suitable collars on the dabbing brush rod or slide.
By this means a very great speed can be given to the dabbing brush, (without
the aid of belts, or ropes as is now the case) allowing the circular combs to be run
quicker, and therefore produce more work.
Dated this 10th day of Navambon 1001

page_text: I, HENRY CALVERT of Prospect Place Huddersfield, Yorkshire, Mechanic do
hereby declare the nature of my invention for "AN IMPROVED METHOD OF AND
" and in
APPARATUS FOR OPERATING THE DABBING BRUSH OF COMBING MACHINES
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of my invention is to employ new and effective means for giving
a quick reciprocatory motion to the well known dabbing brush employed in
Nobles' and other combing machines, and in order that my improvements may be
better understood I have herein given reference to the accompanying sheet of
drawings wherein Fig 1 is elevation of the parts comprising my invention.
A is portion of the circle of an ordinary combing machine, and B is one of two
ordinary pillars employed to carry the driving shaft C. Onto the pillars B I attach
two brackets D having hollow bosses E and E¹ (the upper one being in section so
as to shew the interior) through which passes a vertical rod F at the foot of which
is the dabbing brush G, and on the top of the said rod is an antifriction bowl H
which is operated upon, so as to cause the, rod to descend by the cam I fastened
on the end of the driving shaft C, but the upward motion is imparted to the
vertical rod by spiral spring J which surrounds the said rod, the lower end of the
spring resting in a contracted part in the bottom of the boss E' whilst the upper
end of such spiral spring is thrusting against the adjustable collar K. It will
therefore be seen that as the cam rotates, the dabbing brush will descend and in so
doing will force the fibre into the teeth of the circular comb A but that the upward
stroke is given to the brush by the spiral spring J.
It will also be seen that for one revolution of the driving shaft C the brush may
receive two or more downward strokes according to the shape of cam.
By this
means a very great speed can be given to the dabbing brush (without the aid of
belts or ropes as is now the case) allowing the circular combs to be run quicker and
therefore produce more work.
:
In Figs 2 and 3 I have shewn how the vertical rod F can be raised by the cam
and lowered by the spiral spring which is visa-versa to that described above.
In this case the brackets D and bosses E and E' are reversed and to the top of
the vertical rod I attach two slotted arms L carrying a friction bowl H which rides
on the outer edge of the cam I, so that as the cam rotates it lifts the dabbing
brush, whilst the spring draws it down. The arms L are guided in their upward
and downward movement by the pulley M which works within the slots.
In Figs 4 and 5 I have shewn a slightly modified form of apparatus for giving
reciprocatory motion to the dabbing brush, in this case I employ the same form of
cam I, and vertical rod F but the bowl H is connected to a horizontal lever N
hinged at P with one end of the said lever fastened to the top of the rod F, by this
arrangement the length of stroke given to the dabbing brush can be varied by the
position of the fulcrum P.

page_text: Instead of the spiral spring J being in one length it may be composed of two, or
three lengths so that there is less chance of the spring breaking.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is
The employment of cam or cams I and spiral spring or springs J for giving a
reciprocatory motion to the dabbing brush of a combing machine.