IMPROVEMENTS IN CENTRIFUGAL DRESSING OR BOLTING MACHINES
Year: 1884

page_text: J, HENRY SIMON of No. 7 St Peter's Square Manchester in the county of
Lancaster do hereby declare the nature of my invention for "IMPROVEMENTS
IN CENTRIFUGAL DRESSING OR BOLTING MACHINES" to be as follows:
In the Specification to my Patent No 1542 of 1879 was described a construction
of beaters for centrifugal flour dressing machines consisting of thin strips of sheet
metal, formed by notching and bending into a series of small oblique blades, having
a certain space left between each of them, the object of forming such spaces being
to diminish the wind pressure produced by the beaters as much as possible.
Now I have found from experience that while, on the one hand, the wind
pressure produced by these beaters is not excessive, on the other hand, it is very
essential to provide as much beater surface as desirable to act upon the meal, or
other material to be dressed. For this purpose, according to my present invention,
instead of forming notches or spaces between the successive small blades, I merely
slit the metal strip at the points of division, at the same time bending the one
corner of the separate blades thus formed into the oblique position described in the
before mentioned specification; by this incans, I retain the full surface of the metal
strip of which the beater is formed to act upon the material, and thereby increase
the efficacy of the machine.
Furthermore, it is found that the said thin metal beaters (which have to be kept as
light as possible) tend to bulge outwards in the middle, through the centrifugal force;
now, as for the proper efficacy of the machine, it is very essential that the beaters
should pass as near as possible to the rotating silk cylinder, it frequently happens
that, in bulging, the beaters come in contact with the ribs of the outer cylinder,
which also tend to sagg inwards owing to the weight of the meal or other material
lying upon them and by thus coming in contact the parts become damaged. Now,
according to my present invention, I obviate this defect by slightly shifting round
the star shaped centres that carry the beater blades, relatively to each other in such
manner that the blades, instead of lying parallel with the beater shaft are made to
assume a somewhat oblique position causing their middle portion to lie at a slightly
less radial distance from the shaft and consequently further away from the silk
cylinder than the outer ends. Thus any bulging of the beater and sagging of the
silk cylinder would only cause these parts to approach each other, without actually
coming in contact.
DL: 00L 1
CAL
1 1004
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, HENRY SIMON of No 7 St Peters Square Manchester in the county of
Lancaster, do hereby declare the nature of my invention for "IMPROVEMENTS
IN CENTRIFUGAL DRESSING OR BOLTING MACHINES" and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement:→
In the Specification to my Patent No 1542 of 1879, was described a construction
of beaters for centrifugal flour dressing machines consisting of thin strips of sheet
metal, formed by notching and bending into a series of small oblique blades, having
a certain space left between each of them, the object of forming such spaces being
to diminish the wind pressure produced by tho beaters as much as possible.
Now I have found from experience that while on the one hand, the wind pressure
produced by these beaters is not excessive, on the other hand, it is very essential to
provide as much beater surfaco as desirable to act on the meal or other material to
be dressed. For this purpose according to my present invention, instead of forming
notches or spaces between the successive small blades, I merely slit the metal strip
at the point of division, at the same time bending the one corner of the separate
blades thus formed into the oblique position described in the before mentioned
specification; by this means, I retain the full surface of the metal strip of which
the beater is formed to act upon the material, and thereby increase the efficacy of
the machine.
Furthermore, it is found that the said thin metal beaters (which have to be kept
as light as possible) tend to bulge outwards in the middle, through the centrifugal
force; now, as for the proper efficacy of the machine, it is very essential that the
beaters should pass as near as possible to the rotating silk cylinder, it frequently
happens that, in bulging, the beaters come in contact with the ribs of the outer
cylinder, which also tend to sagg inwards owing to the weight of the meal or other
material lying upon them and by thus coming in contact the parts become damaged.
Now, according to my present invention, I obviate this defect by slightly shifting
round the star-shaped centres that carry the beater blades, relatively to each other
in such manner that the blades, instead of lying parallel with the beater shaft, are
made to assume a somewhat oblique position, causing their middle portion to lie at
a slightly less radial distance from the shaft and consequently further away from
the silk cylinder than the outer ends. Thus any bulging of the beater and sagging
of the silk cylinder would only cause these parts to approach each other, without
actually coming in contact.
Fig. 1 of the accompanying drawings shews a longitudinal section of the cylinder
of a centrifugal dressing or bolting machine, with the beaters constructed
according to my invention. Fig. 2 shews a cross section, fig. 3 shews an
enlarged part elevation of one of the beater blades and fig. 4 shews a cross
section of the same.
The outer edges of the beaters A are slit at intervals and the one corner of each
small blade a thus formed is bent back to a certain extent as shown at figs. 2 and 4,
so that while oblique surfaces are thus afforded for acting upon the material as in
the previous patent the whole surface of the beater is retained instead of being
partially cut away as was there described.
The centres C C to which the beaters are attached are fixed in such positions
relatively to each other on the beater shaft, that the blades are made to assume an
oblique or twisted position relatively to the shaft as shewn instead of lying parallel

page_text: with the same as heretofore, whereby the middle portion is made to lie at a slightly
less radial distance from the shaft than the ends and thus contact with the silk
through the bulging of the beaters is prevented.
Having now particularly described the nature of my said invention and in
what manner the same is to be performed, I declare that what I claim, in respect
of beaters for centrifugal dressing or bolting machines, is—
1. Constructing the beaters with their outer edges slit at intervals so as to form
a number of small blades lying closely side by side, the one corner of each blade
being bent back, substantially as herein described.
2. So arranging the beaters and their centres or supports relatively to the beater
shaft that the beaters lie obliquely thereto, so that their middle parts are situated
at a less radial distance from the shaft than the ends substantially as herein
described.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.