IMPROVEMENTS IN CENTRIFUGAL FLOUR- DRESSING MACHINES, AND IN APPARATUS CONNECTED THEREWITH
Year: 1878

page_text: LETTERS PATENT to Joseph Bedford, of Leeds, in the County of York, Corn-
mill Engineer, for the Invention of "IMPROVEMENTS IN CENTRIFUGAL FLOUR-
DRESSING MACHINES, AND IN APPARATUS CONNECTED THEREWITH."
Sealed the 22nd April 1879, and dated the 24th October 1878.
PROVISIONAL SPECIFICATION left by the said Joseph Bedford at the
Office of the Commissioners of Patents on the 24th October 1878.
JOSEPH BEDFORD, of Leeds, in the County of York, Cornmill Engineer.
PROVEMENTS IN CENTRIFUGAL FLOUR-DRESSING MACHINES, AND IN APPARATUS
CONNECTED THEREWITH."
"IM-
This Invention relates to the class of machinery above mentioned in which the
material is sifted by being thrown against the silk gauze surrounding the machine
by means of a series of rotating blades or beaters.
The frame of the cylinder consists of two dises or end plates, which are carried on
the beater shaft at each end thereof, and working in conical bearings so as to revolve
independently of the beater shaft.
Inside the cylinder is a continuous worm of wood or iron which extends from
end to end of the machine so as to convey the material through. The beater shaft
is carried by two bearings fixed on the frame of machine, and is provided with
arms having wood blades or beaters attached thereto. Underneath the cylinder is
fixed a brush, which is caused to oscillate by means of a lever and crank, and which
serves to keep the gauze of the cylinder clear and open.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Joseph Bedford in the Great Seal Patent Office on the 24th
April 1879.
....
JOSEPH BEDFORD, of Leeds, in the County of York, Cornmill Engineer. "IM-
PROVEMENTS IN CENTRIFUGAL FLOUR-DRESSING MACHINES, AND IN APPARATUS
CONNECTED THEREWITH."
This Invention relates to the class of machinery above mentioned in which the

page_text: material is sifted by being thrown against the silk gauze surrounding the machine
by a series of rotating blades or beaters.
My improvements consist in constructing the beating apparatus in such manner
that it shall serve-to-distribute-the-meal-to-be-operated upon over the surface of the
-silk-gauze-and at the same time to accelerate the passage of the undressed portion
of the material to the outlet end of the machine. My improvements also consist in
the employment of a brush placed underneath the cylinder and caused to oscillate
by means of a lever and crank, which brush serves to keep the gauze of the cylinder
clear and open. In order that my Invention may be fully understood I have hereto
annexed a Sheet of Drawings illustrative thereof. Fig. 1 is a longitudinal sectional
elevation; Fig. 2 is cross section of inlet end of machine; Fig. 3, outlet end eleva-
-tion-;-and-Figs.-4-and-5-illustrate an improved method of carrying the cylinders of
centrifugal machines. A is the gauze-covered cylinder, which is supported upon
the shaft B by means of the conical necks and bushes C, capable of being adjusted
by screws c.in such manner that the cylinder may revolve upon but independantly
of the shaft B.
Upon the shaft B are arms E which carry longitudinal beaters or blades F formed
of wood or any suitable material, and as the shaft B revolves these beaters distribute
the meal over the surface of the silk gauze. To the blades F are fixed a series of
vanes G.at such an angle that they form an almost continuous beater, extending
from one end of the machine to the other, and this continuous beater serves to
accellerate the passage of the undressed material from one end of the machine to the
other. These vanes instead of being set so as to form a continuous beater may be
less in number and more detached according to the requirements of the machine or
material under operation.
Underneath the cylinder, upon a shaft H, is a soft brush J made of horsehair or
any suitable material, and this brush is caused to oscillate by means of cranks K and
connecting rod L, which transmit the motion from the worm shaft M. The brush
being adjusted so as to oscillate in contact with the cylinder A the gauze is thereby
kept clear and open.
Motion is communicated to the shaft B by pulley N, and
transmitted by pullies and belt P to the shaft Q, which carries a worm for con-
From the shaft Q
yeying the dressed meal to a spout at either end of the machine.
motion is transmitted to the cylinder A. by means of belt and pullies R and pinion
and spur wheels S.
The cylinder A may be supported independantly of the shafts B by rollers T
carried upon conical studs 8, as shewn in Figs. 4 and 5.
Having thus described the nature of my Invention, and the manner in which
the same is to be performed or carried into practice, I would have it understood
that I claim, firstly, the employment in centrifugal flour-dressing machines of beaters
constructed in the manner and for the purpose substantially as herein shewn and
described. Secondly, the employment of an oscillating brush for keeping the silk
gauze clear and open.
In witness whereof, I, the said Joseph Bedford, have hereunto set my hand
and seal, this Twenty-first day of April, in the year of our Lord One
thousand eight hundred and seventy-nine.
JOSEPH BEDFORD. (L.S.)