IMPROVEMENTS IN MACHINERY FOR USE IN THE MANUFACTURE OF FLOUR OR MEAL
Year: 1882

page_text: LETTERS PATENT to Henry Harris Lake, of the firm of Haseltine, Lake,
& Co Patent Agents, Southampton Buildings, London, for an Invention of
"IMPROVEMENTS IN MACHINERY FOR USE IN THE MANUFACTURE OF FLOUR
OR MEAL" Communicated to him from abroad by Robert R. Schmidt, of
Berlin in the Kingdom of Prussia, Germany,
PROVISIONAL SPECIFICATION left by the said Henry Harris Lake at the
Office of the Commissioners of Patents on the 31st July 1882.
"
HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co., Patent Agents,
Southampton Buildings, London, IMPROVEMENTS IN MACHINERY FOR USE IN
THE MANUFACTURE OF FLOUR OR MEAL [A communication to him from abroad
by Robert R. Schmidt, of Berlin, in the Kingdom of Prussia, Germany]
"
This Invention relates first, to an improved manner of fastening the bolting
cloth, or screening silk, to the cylinder or drum of a flour bolting or dressing
machine, and secondly, to the combination, with such machine, of a peculiar and
automatic elevator delivering the grist from the said flour bolting or dressing
machine, by means of a conveying worm, into some suitable centrifugal feed-
apparatus which may throw it into the grinding rollers as usual.
Referring to the first part of my said Invention my improved manner of
fastening the bolting cloth or screening silk, to the cylinder or drum of the said
flour bolting or dressing machine consists in providing the said bolting cloth with
a strong edge made of linen or other suitable material which encloses, and is stitched
over, a rope or cord so as to give the bolting cloth a solid edge, either rounded, or of
any other convenient puffed-up or swelled shape.
Each head of the bolting cylinder is provided with a hollow slot or an equivalent
contrivance extending all around the heads of the bolting cylinder near their inner
periphery, said slot being intended for the reception of the said solid edges of the
bolting cloth. This slot may be obtained in different ways, either by fastening a
ring having a projecting flange, or a hollow strip, or slotted tube of iron or other

page_text: material to the heads of the bolting cylinder, or in any other convenient manner.
For the purpose of supporting the bolting cloth so as to extend around the
cylinder, I use a number of U-arms fastened to the inside of the cylinder ends at
equal distances from each other, said arms being so arranged that the arms of one
cylinder end stand exactly opposite those of the other cylinder end. These U-arms
support a number of metal U-bars which extend from one end of the bolting
cylinder to the other, and are provided at their upper hollow side with a snugly
fitting wooden bar, the latter being covered with suitable lining on which the
bolting cloth rests.
According to the second part of my Invention I combine with the bolting drum
or cylinder an elevator which is mounted at the same height, and revolves on the
same axis, with the bolting or dressing machine. This elevator is fixed to the
head of the bolting cylinder and rotates with the same, its rotary motion being
about one-tenth (more or less) of the speed of the beater wheel within the said
cylinder. The grist in the latter passes through the head of the bolting-machine
and through the head of the elevator, where it falls into scoops arranged near the
periphery of the drum-shaped elevator. These scoops carry the grist upward and
empty it through a spout in the box surrounding the elevator, into a suitable
worm conveying it to a centrifugal feed apparatus which will throw it into the
grinding rollers. By my said improvements the construction of such machinery
is simplified and the height of the same reduced considerably

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Harris Lake in the Great Seal Patent Office on the
31st January 1883.
HENRY HARRIS LAKE, of the firm of Haseltine, Lake and Co, Patent Agents,
Southampton Buildings, London "IMPROVEMENTS IN MACHINERY FOR USE IN
THE MANUFACTURE OF FLOUR OR MEAL A communication to me from abroad by
Robert R. Schmidt, of Berlin, in the Kingdom of Prussia, Germany
"
This invention relates to improved means for fastening or applying the bolting or
screening cloth or silk to the cylinder or drum of a flour bolting or dressing
machine, and to the combination with such machine, of an elevator mounted at
the same height, and on the same axis, as the bolting cylinder.
The said invention is illustrated in the accompanying drawing, in which
Figure 1 is a longitudinal vertical section through the bolting cylinder
Figure 2 is a section on the line xx Figure 1, shewing the supporting ribs and
the U-shaped bearing arms carrying U-shaped iron bars, provided with wood bars
which form the contact surfaces for the screening cloth
Figure 3 is a section on the line y y, Figure 1, shewing the elevator which
receives the grist from the bolting cylinder and delivers the same, either directly
or by means of suitable intermediate apparatus, into a centrifugal or other feed
apparatus.
Figure 4 is a detail view, partly in section, shewing the means for applying or
holding the screening cloth.
Figure 5 is a similar view shewing a modification of the same.
Figure 6 is a transverse section shewing the arrangement of the U-shaped arms
and the U-shaped bars upon which the screening cloth rests
Figures 7, 8 and 9 are sectional views shewing modified forms for holding the
screening cloth, and
:
Figure 10 shews the manner in which the screening cloth is stretched
-
Similar letters of reference indicate corresponding parts throughout the
drawings.
A is the bolting cylinder having the heads a and b, near the inner periphery, of
each of which is fixed a suitable number of projecting U-shaped arms chaving
supporting ribs c¹. Every pair of opposite arms c carries an U-shaped bar d of
iron or other suitable material, the said U-shaped bars & fitting snugly the
U-shaped arms c and extending across the entire length of the cylinder A. The
bars d are secured to the arms c either by means of the two screw bolts ff, as
shown in Figure 4, or by the two screw bolts e and f, as shewn in Figure 5. In
the latter case, the bolt e is made, of a rectangular or square form near its inner
end, and fits snugly the end of the U-shaped bar, and this said rectangular end of
the screw bolt e is provided with a hole for the screw-bolt to pass through, the
end of the latter carrying a nut which holds the screw-bolt e, the bar d, and the
arm c in a tight connection. The screw-bolt e is provided at its outer end with a
similar nut to prevent the longitudinal movement of the bars d.
The
Each U-shaped bar d is filled up with a snugly fitting wood bar g, extending from
one head to the other, and the outer surfaces of the said wood bars g are rounded
off and provided with a suitable covering over which the screening cloth is drawn.
In the drawing the screening or bolting cloth is indicated by dotted lines z.
said cloth is provided with a strong edge made of linen or other suitable material,
the rim of which is folded over a rope l, and is fastened by means of stitching to
the upper side of the said linen edge thus enclosing the rope and forming a thick
edge on the screening cloth

page_text: .h, h are bars of iron, wood, or other suitable material bent in such a manner as
to form, when screwed upon the heads a and b, a space similar to that formed by
slotting a tube or pipe of any convenient sectional form lengthwise. The rope
enclosed and held by the linen edge of the bolting cloth, is inserted into this space,
so that, when the said bolting cloth is stretched, the edge with the rope / will be
pressed against the inside of the slot between the lower edges of the bars h and the
upper surfaces of the wood bars g, thereby holding the bolting cloth in a stretched
position
A bar h, may be applied between each two adjacent U-shaped bars d, or the
bar may consist of one single ring screwed to the heads near their inner 1
peripheries above the said bars d. In the former case the bolting cloth will have
a polygonal form, while in the latter case its transverse section will be cylindrical,
as shewn in Figure 2. When there is but one ring used, it must be so constructed
as to allow of a short piece being taken out for inserting the end of the rope 7 of
the bolting cloth. When there are several bars h applied it will be necessary only to 1
unscrew one of them to insert the rope into the space formed between the one
adjacent bar and the wood bar g, and to slide the rope forward until it issues from
the other adjacent bar h, when the ends of the said rope may be tied together and
the bar h replaced, to cover the connected part of the rope as will be easily
understood. The cloth is then stretched either in the usual manner or as indicated 2
in Figure 10. In the latter case, in order to allow the. bolting cloth to be more
readily tightened laterally as well as longitudinally, it is formed in several sections
or pieces tt, the said pieces being lined with linen on their edges, with the exception
of the thick edge previously referred to, so as to receive additional strength. This
lining is provided with a number of lacing holes, through which a cord may be 2
passed from one section of the bolting cloth to the other. By tightening this cord
the said bolting cloth may be stretched tightly on the bolting cylinder both
laterally and longitudinally.
:
C
In the modification shewn in Figurec5, the ring k has been substituted for the
bars h, an annular projection m similar to the one shewn in Figure 4. being applied 3
to the heads below the said ring k to form the slotted tube, which serves for the.
reception of the rope to hold the stretching cloth. Other forms of such slotted
tube are shewn in Figures 7, 8, and 9.
I wish it to be understood that I do not confine myself to any distinct form of
device for holding the thick edge of the bolting cloth when the latter has been
stretched, but that my invention relates to any such means whereby the said thick
edge is prevented from escaping when the said cloth is stretched
Referring to Figures 1 and 3 of the drawing I will describe the arrangement of
the improved elevator. The said elevator is fixed to the head b of the bolting
cylinder A, and rotates with the same, its rotary motion being about one-tenth
(more or less) of the speed of the beater wheel within the said cylinder A. The
grist in the latter is moved from left to right by means, of the beaters, until it
enters the elevator B through the openings n, the said elevator rotating within a
stationary box C and being provided with a number of buckets o. These buckets o
which are closed by a ring q, will elevate the grist, and deliver the same into the
conveyor p, Figure 3, whence it will be conveyed to a centrifugal or other feed!
apparatus, which will throw it into the grinding rollers, as usual
It will be seen that by these improvements, the construction of bolting and
dressing machines is simplified and the height of the same considerably reduced
Having thus fully described the said invention as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood.
that I claim in a dressing and bolting machine
First. The bolting cloth provided with a thick edge, produced either by enclosing
therein a rope or cord, or in any other suitable manner, and serving to hold the
stretched cloth in position, substantially as set forth.
Second. The combination, with the bolting cloth, of bars, pipes or rings fixed to
the heads of the said machine and forming, either by themselves, or in conjunction
J

page_text: with projections or similar devices, spaces similar to the spaces formed by pipes of
any convenient cross-section slotted longitudinally, substantially as, and for the
purpose, specified.
Third. The combination, with the bolting cloth, of U-shaped bars & extending
longitudinally across the bolting cylinder, substantially as, and for the purpose,
specified.
Fourth. The combination, with the U-shaped bars d, of wood bars g, substantially
as, and for the purpose, specified.
Fifth. The combination, with the bolting cylinder, of an elevator B mounted on
the same axis as the said cylinder, substantially as, and for the purpose, specified
In witness whereof I the said Henry Harris Lake have hereunto set my
hand and seal this Thirty first day of January in the year of our Lord
one thousand eight hundred and eighty three
HENRY H LAKE (Tα)