IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR ACTUATING AND REGULATING DABBING BRUSHES FOR COMBING MACHINES "
Year: 1882

page_text: LETTERS PATENT to John Haigh, Walter Dean, and Thomas William Mitchell,
1
all of Bradford, in the County of York, for an invention of "IMPROVEMENTS
IN THE METHOD OF AND APPARATUS FOR ACTUATING AND REGULATING
DABBING BRUSHES FOR COMBING MACHINES
"
PROVISIONAL SPECIFICATION left by the said John Haigh, Walter Dean,
and Thomas William Mitchell at the Office of the Commissioners of Patents
on the 2nd June 1882.
JOHN HAIGH WALTER DEAN and THOMAS WILLIAM MITCHELL all of Bradford
in the County of York IMPROVEMENTS IN THE METHOD OF AND APPARATUS
FOR ACTUATING AND REGULATING DABBING BRUSHES FOR COMBING MACHINES
Our invention has for its object the mounting and actuating of the "dabbing
brushes" used for pressing the wool between the teeth of "Noble's" or other
circular combing machines in such a manner that the working parts are reduced,
and the brushes more easily adjusted to press or dab the wool to the requisite
depth between the comb teeth.
We accomplish our object by securing the dabbing brushes to a spring at each
side of the machine, which are actuated by revolving eccentrics acting direct upon
the springs causing the brushes to dab or press the wool between the teeth of the
circular combs.
:
The brushes are adjusted to dab or press the wool to the requisite depth between
the teeth by means of angular-faced blocks which are regulated by screws, one of
which is cut with a left and right hand threads the turning of which adjusts the
brush, which is secured in the position by a lock screw
-
.:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Haigh, Walter Dean, and Thomas William Mitchell in the
Great Seal Patent Office on the 2nd December 1882.
JOHN HAIGH, WALTER DEAN and THOMAS WILLIAM MITCHELL, all of Bradford
in the County of York IMPROVEMENTS IN THE METHOD OF AND APPARATUS
FOR ACTUATING AND REGULATING DABBING BRUSHES FOR COMBING MACHINES
Our invention has for its object the mounting and actuating of the dabbing
brushes used for pressing the wool between the teeth of Nobles' or other circular
combing machines in such a manner that the working parts are reduced and the
brushes more nicely adjusted to press or dab the wool to the requisite depth.
We accomplish the above object by securing the Brush to springs on each side
of the comb pillar of the machine and actuating the Brush downwards into the
teeth of the comb by means of a revolving eccentric acting directly upon a plate
over the termination of the springs and immediately, over the brush the springs
then lift the brush out of the teeth and thus the wool is by the alternate action of
the eccentric and the action of the spring dabbed directly into the teeth.
The adjustment of the brush. we accomplish by two wedges connected by a
screw having a right and left handed thread: over these wedges sits a plate
against which the revolving eccentric works in dabbing the brush down into the
teeth of the u
In experimenting with the above arrangement we found that the brush whilst
effecting its purpose did not enter or leave the teeth of the comb truly vertical,
thus involving unnecessary wear and tear of the Brush. We overcome the above
difficulty by a modification, viz, surrounding the eccentric by rings thus ensuring
the direct upward and downward motion of the brush truly vertical
In the modification we accomplish the adjustment of the Brush to its work by
a slot in the plate above that to which the brush is attached, this plate is bolted
to a casting or plate worked by the Eccentric: the top and bottom of the eccentric
rings terminate in a shoe having a bearing surface of nearly the entire length of
the plate to which the adjustable brush is secured at the bottom. The slack
occasioned by the wear and tear of the shoes against the top and bottom plates is
taken up by lock nuts on the top of the guide spindles which not only connect
together the two plates but act as guides to keep the brush truly vertical.
In order that our invention may be understood we have attached hereunto a
sheet of drawings by which means we are enabled to more particularly describe
the same
Our apparatus is driven from the top main shaft in the ordinary way by a strap
and pulley as described in Lobren's work upon the combing machine published in
1875 under Whiteheads' system page 57.
In all the figures similar parts are represented by similar letters. Figure 1 is a
side elevation of our improved apparatus as arranged when springs are used for
raising the brushes out of the teeth of the comb. The bracket A is secured to the
pillar B by bolts, the pulley C is driven from the main shaft in the ordinary way
as before mentioned, and the eccentric D being in connection with pulley C..acts
direct upon the block E forcing the brush F and the wool. down into the comb.
By the action of the springs G which are attached to the pillars B by means of a
bracket H, the brush is lifted out of the teeth of the comb; thus by the alternate
motion of the eccentrics D and springs G the wool is dabbed directly into the teeth
of the comb.
Figure 2 is a detail of the block E, the wedges E' are secured to the plate J by

page_text: means of the screws J' fitted in slots to allow for the adjustment of the block E
which is accomplished by the use of a right and left handed screw K fitted to the
wedges E¹, by means of which the said wedges are regulated and the block E raised
or lowered as desired thereby adjusting the brush to dab the wool to the required
depth in the comb. By locking the bolt K' the block E is retained in its proper
position.
Figure 3 is a side view of our modified arrangement and Figure 4 is a front
view. Around the eccentric D we place rings L which acting direct upon the
plates M and M² dab the brush F down and lift it again out of the comb, this
motion of the brush being truly vertical.
The eccentric rings L terminate top and bottom in shoes L³ having a bearing
surface nearly the whole length of the plates M and M' to which the adjustable
brush F is secured at the bottom plate M. The slack occasioned by the wear and
tear of the shoes against the top and bottom plates is taken up by means of lock
nuts on the top of the guide spindles R, by which the plates M and M' are
connected together and which also keep the motion of the brush in a truly vertical
direction.
By our arrangements for the actuation of dabbing brushes the motion is
practically noiseless as by the upward action of the springs the block E is always
in contact with the circumference of the eccentric, therefore no knocking can take
place and by the modified arrangement shewn in Figures 3 and 4 all the slack
consequent upon the wear and tear of the shoes can be "taken up" thereby
preventing the knocking so prevalent with motions now. in common use.
Having now described our invention and the best mode known to us of carrying
it into effect, we wish it to be understood that we do not confine ourselves to
the exact details herein shewn and described, but that what we beleive to be new
and desire to protect under Letters Patent is :—
The apparatus for dabbing the wool into the teeth of the comb substantially as
herein described, no claim being made for any one part taken separately or when
used for other purposes, but only when combined with the other necessary parts
to form a complete dabbing apparatus substantially as set forth.
In Witness whereof I the said Thomas William Mitchell, for and on behalf
of myself and the said John Haigh and Walter Dean have hereunto set
my hand and seal this first day of December in the year of our Lord
One thousand eight hundred and eighty-two
THO W MITCHELL (L.S.)