Year: 1885

page_text: I, JABEZ WARD CROSBY, of Marshall Street Mill, Leeds, in the County of York,
Corn Miller do hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements in flour dressing machines and
has for its object the arrangement of the machines in such a manner, that the
exterior of the silk dressing barrels are kept clear of any accumulation of fine чlour
which is so detrimental to the efficiency of machines of this class.
I accomplish my object in the following manner :-The dressing barrel may be
octagional or have any other number of sides, around which I place parallel to the
sides of the barrel, one or more paths upon each of which revolves a pulley that is
secured to a shaft upon which are also secured brushes having the line of bristles
formed in a spiral manner, running in opposite directions somewhat in the form of
a right and left handed threaded screw.
The shaft upon which the brushes and pulley are secured, is mounted on arms
which allow the pulley and brushes to follow the contour of the dressing barrel;
and by reason of the latter revolving at a different surface speed to the brushes,
the exterior of the barrel is brushed of any accumulation and the meshes cleared.
By attaching a lever to the shaft or arms, the brushes can be brought clear of the
dressing barrel without stopping the machine.

page_text: 1 JABEZ WARD CROSBY, of Marshall Street Mill, Leeds, in the county of York,
Corn Miller, 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:-
This invention relates to certain improvements in flour dressing machines and has
for its object the arrangement of the machines in such a manner, that the exterior
surface of the silk dressing barrels are kept clear of any accumulation of fine flour
which is so detrimental to the efficiency of machines of this class.
I accomplish my object in the following manner: The dressing barrel may be
octagonal or have any other number of sides, around which I place parallel to the
sides of the barrel two or more paths upon each of which revolves a pulley that is
secured to a shaft upon which are also secured a brush having the line of some
of the bristles formed in a spiral manner, running in opposite directions somewhat
in the form of a right and left handed threaded screw.
The shaft upon which the brush and pulley are secured, is mounted on arms
which allow the pulley and brushes to follow the contour of the dressing barrel;
and by reason of the latter revolving at a different surface speed to the brush the
exterior of the barrel is brushed of any accumulation and the meshes cleared.
By attaching a lever to the shaft or arms, the brush can be brought clear of the
dressing barrel without stopping the machine.
My improvements are illustrated in the accompanying drawing in which figure 1,
represents a longitudinal elevation of a centrifugal flour dressing machine con-
structed according to my invention the doors having been removed to show the
internal reel. Figure 2, represents a transverse sectional elevation of the same.
Figures 3 and 4 are side and end elevations respectively of the brush. Figure 5,
details of a lever arrangement for throwing the brush in or out of gear. Similar
letters refer to similar parts in all the figures of the drawing.
The brush consists of a long cylinder of wood A, mounted upon a shaft, the ends
of which rest in bearings B. The bristles or fibres of the brush C are fixed in longi-
tudinal lines from end to end of the cylinder A and two or more of these lines of
bristles or fibres follow right and left hand spiral directions and other rows of
bristles D are fixed in straight lines along the brush cylinder. At or near one or
both ends of the brush cylinder are the fixed pulleys or rollers E covered round
their periphery with strips of elastic material. The bearings B in which the shaft
of the revolving brush is carried are fixed to the ends of the hanging arms or
links F, which arms or links are supported by jointed brackets G, from the top of
the outer case, and the hanging arms or links together with the brush they carry
can by this means be raised or lowered. The projecting paths or flanges H are
fixed round the circumference of the reel the said paths or flanges H forming lines
parallel with the surface of the silk or gauze screens and serving the purpose of
driving the covered pulleys or rollers E which can be lowered until they come in
contact with the said paths or flanges.
The revolution of the paths or flanges (with the reel) imparts motion to the
pulleys or rollers E, which press upon such paths or flanges with the weight of the

page_text: revolving brush assisted by the pressure of springs P, and the brush is thereby
driven at a high rate of speed and comes while revolving in contact with the whole
of the silk or gauze sides of the reel accommodating itself by its automatic rise
and fall to the angles of the reel. The brush revolving at a different rate of speed
to the silk covered reel a sweeping action is produced on the surface of the silk and
the brush thereby cleanses or removes the fine flour from the meshes of the silk
throughout the whole surface of the sides of the reel at every revolution of such
reel and thereby keeps open the interstices of the silk or gauze to facilitate the
passage of the flour.
The brush is lowered into gear or raised out of gear by means of the vertical
rods J, actuated by the hand lever K.
The silk or gauze covered sides of the reel are represented at L, the outer case
thereof at O and the drum or pulley for driving the reel at M.
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 revolving brush of the form described, the pulleys or rollers for actuating
the brush the paths or flanges attached to the reel for driving such pulleys or rollers
the general arrangements of parts for raising and lowering the pulleys or rollers
and the method of driving the same all substantially as described.
Dated this 18th day of March 1886.
WILLIAM JAMES BAKER,
Agent for the Applicant.