Year: 1887

page_text: Date of Application, 15th Sept., 1887
Complete Left, 20th Apr., 1888
Complete Accepted, 25th May, 1888
I, HENRY COUBROUGH of No. 15 Great St. Helens in the City of London, Merchant
do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved construction of bolting machines wherein the
bolting cylinder or drum while revolving on a horizontal axis has a constant end and
side shake imparted to it so as to give it a sifting action during its rotation, and at
the same time to discharge the coarser particles of the material treated from one end
of the bolt. For this purpose, according to one arrangement the drum, which may be
of hexagonal or any other shape, has its axis running in bearings that are suspended
by links from fixed brackets and that are also connected to other, horizontal, lateral
links that are pivotted to the framing of the machine, the points of attachment of the
links to the brackets and framing being by preference made adjustable in slots so as
to vary the angle of suspension of the axis.
The rotary motion is imparted to the axis and bolting cylinder from a vertical
driving shaft by means of a horizontal way shaft and pitch wheels and chain, and upon
the vertical shaft is a cam excentric or tappet against which a rounded surface on the
one end bearing of the axis is pressed by a spring pressing against the other
end bearing, so that as the driving shaft rotates, its cam, in conjunction with the
spring, impart a to and fro end motion to the axis and cylinder, the bearings of which
will swing on the suspending links while at the same time they receive a lateral to and
fro motion owing to the connection to the side links.
The pressure exerted by the spring is made adjustable by means of a regulating
screw.
By means of the longitudinal to and fro motion imparted to the cylinder, the coarse
material that is retained in the same is made to travel towards the discharge end.
If the bolting cylinder is made of hexagonal or other polygonal form, I fit ribs
presenting flat surfaces into the angles, so as practically to form six wide and six
narrow internal sides.
Datel thin 15th L
1007
ABEL & IMRAY,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Bolting Machines for Flour and other Materials.
I, HENRY COUBROUGH of No. 15 Great St. Helens in the City of London, Merchant
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:-
My invention relates to an improved construction of bolting machines wherein the
bolting cylinder or drum, while revolving on a horizontal axis, has a constant end and
side shake imparted to it so as to give it a sifting action during its rotation, and at
the same time to discharge the coarser particles of the material treated from one end
of the bolt. For this purpose according to one arrangement, the drum, which may be
of hexagonal or any other shape, has its axis running in bearings that are suspended
by links from fixed brackets and that are also connected to other, horizontal, lateral
links that are pivotted to the framing of the machine, the points of attachment of
the links to the brackets and framing being by preference made adjustable in slots so
as to vary the angle of suspension of the axis.
The rotary motion is imparted to the axis and bolting cylinder from a vertical
driving shaft by means of a horizontal way shaft and pitch wheel and chain, and upon
the vertical shaft is a cam, eccentric, or tappet against which a rounded surface
or antifriction roller on the one end bearing of the axis is pressed by a spring pressing
against the other end bearing, so that as the driving shaft rotates, its cam in
conjunction with the spring, impart a to and fro end motion to the axis and cylinder,
the bearings of which will swing on the suspending links, while at the same time they
receive a lateral to and fro motion owing to the connection to the side links.
The pressure exerted by the spring is made adjustable by means of a regulating
screw.
By means of the longitudinal to and fro motion imparted to the cylinder, the coarse
material that is retained in the same is made to travel towards the discharge end, and
this is made to take place faster or slower, according to the position of the links in
the slots of the brackets.
If the bolting cylinder is made of hexagonal or other polygonal form, I fit ribs
presenting flat surfaces into the angles, so as practically to form six wide and six
narrow internal sides.
Fig. 1 of the accompanying drawings shews a side view of so much of a bolting
machine as is necessary to explain the above described invention, Figs. 2 and 3 shew
part plans and Fig. 4 an end view of the bolting cylinder.
A is the bolting cylinder which is of hexagonal or other suitable shape, the angle
ribs a being formed with flat inner surfaces as shewn so as to form narrow sides
to the drum as above described.
The cylinder is suspended in a horizontal position by means of links D D at each
end, connected at the upper ends to slots in brackets E and at their lower ends to the
journal supports C that carry the shaft B. The supports C are also connected by

page_text: horizontal links D¹ to slots in brackets E¹ on the side of the framing, causing the
cylinder A and its shaft B, when reciprocating in a longitudinal direction, to receive
also a slight transverse to and fro motion. These motions are imparted to the
cylinder from the vertical driving shaft I driven by gearing J and carrying a cam H
with which an antifriction roller G carried on the one end of the shaft B is kept in
contact by a helical spring K pressing against the other end of the shaft, the pressure
of such spring being regulated by an adjusting screw acting upon a plug L
entering the hollow end of the shaft B and against a collar I on which the other end
of the spring K bears. The roller G is carried by a bracket G¹ fitting with a cylindrical
stud loose in the hollow end of the shaft B, and while the shaft rotates, the roller
is kept in its horizontal position against the cam H by means of an arm R on the
bracket E which bears against the axis G of the roller G and so prevents it from
being carried round by the shaft B.
The requisite rotary motion is imparted to the bolting cylinder from the shaft I by
means of a way shaft O driven by bevil gear P and imparting motion to the shaft B
by sprocket wheels M and N and a pitch chain which allow the shaft Band cylinder A
to partake of the before described oscillating motion. The shaft of the worm
conveyer below the bolting cylinder is also driven from the shaft O by sprocket
wheels and pitch chain.
In place of sprocket wheels might be used grooved pullies and bands.
The motion imparted to the bolting cylinder by the combined action of the cam H
and the spring K will be of a jerky nature, having the effect of impelling the contents
of the cylinder gradually towards the discharge end, and this action will be made to
take place quicker or slower according to the position of the links D and D' in the
slots of their brackets E and E.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In holting machines, suspending the bearings of the bolting cylinder shaft from
links which allow of a longitudinal to and fro motion being imparted thereto by the
joint action of a revolving cam acting on one end of the shaft and a spring acting on
the other end, the said bearings being also connected to horizontal links whereby
a to and fro motion is also imparted to the cylinder in a transverse direction,
substantially as herein described.
2. In bolting machines constructed as set forth in the preceding claim, providing a
slotted attachment for the links that connect the bolting cylinder to its supports,
so that by varying the position of the links in the slots the speed at which the
material travels through the bolting cylinder may be varied, substantially as herein
described.
Dated this 20th day of April 1888.
3
ABEL & IMRAY,
Agents for the Applicant.