IMPROVEMENTS IN THE CONSTRUCTION OF ROLLERS FOR FLOUR MILLS AND OTHER PURPOSES
Year: 1879

page_text: LETTERS PATENT to Wilhelm Braun, of Carlsbad, Bohemia, in the Empire of
Austria, Engineer, temporarily of Dalberg Road, Brixton, Surrey, for the
Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF ROLLERS FOR FLOUR
MILLS AND OTHER PURPOSES"
Sealed the 15th June 1880, and dated the 18th December 1879.
PROVISIONAL SPECIFICATION left by the said Wilhelm Braun at the Office
of the Commissioners of Patents on the 18th December 1879.
WILHELM BRAUN, of Carlsbad, Bohemia, in the Empire of Austria, Engineer,
temporarily of Dalberg Road, Brixton, Surrey. "IMPROVEMENTS IN THE
CONSTRUCTION OF ROLLERS FOR FLOUR MILLS AND OTHER PURPOSES."
My Invention relates to the construction of flour mill and other rollers in which
the operating surface (which I will call the roller-facing) is of porcelain or other
material in the form of a hollow cylinder or shell, and is mounted on a suitable
shaft, and my Inventlon has reference to methods of mounting the roller facings.
To facilitate the understanding of the nature of my Invention I append illustrative
Drawings, in all the views of which a is the roller facing and b the shaft on which
it is mounted.
According to the method of mounting illustrated in Fig. 1, the shaft b is at 6¹
and be reduced in diameter in a conical form, the smallest diameters being towards
each other, and the roller facing a is held between flanged end cheeks c, c², bored
conically and secured on the shaft 6 by split double-coned wedge rings d, d',
pressed home simultaneously. The annular space e between the shaft and roller
facing is, or may be, filled with cement to form a filling or backing for the roller
facing. Any suitable cement, such as Keene's, or cement made with sulphur
(sufficient sand being used to prevent expansion), or other cement may be used. It
is put in through holes in one of the flanged end cheeks.
According to the modification illustrated in Fig. 2, the shaft b is formed with a
couple of conical swells or enlargements 63, 64, the smallest diameters being towards

page_text: each other; and the roller facing a is held between a pair of flanged end
cheeks c, c³, bored conically and secured on the conical enlargements 68, 6, of the
shaft by split double-coned wedge rings d, d, pressed home simultaneously.
The flanged end cheeks c, c³, are shewn made with driving pieces entering
recesses in the ends of the roller facing, and packing a¹ (it may be asbestos paper)
is, or may be, interposed between the flanged end cheeks and the ends of the roller
facing to form a bedding.
According to the arrangement illustrated in Fig. 3, the shaft b is tapered
gradually from 6 to be, and the part b' is formed with a screw thread. The flanged
end cheek c¹ is formed with a tubular roller stock c³, the unflanged end of which is
made of a conical form, the largest diameter being at the outer end. This outer end
of the tubular roller stock is also bored out conically at c³, and the remainder of the
stock is bored to fit the conical shaft. The roller facing is held between the flanged
end cheek c¹ and another flanged end cheek c, which latter is secured on the conical
end of the tubular roller stock by the split double-coned wedge ring d*; e is the
cement backing or filling put in through holes c*. The tubular roller stock with
the roller facing mounted on it is fixed on the conical shaft by a conical nut f;
a¹ is packing or bedding which may be of asbestos paper, or other suitable
material
According to the arrangement illustrated in Fig. 4, the roller facing is mounted
on a tubular roller stock c³ in a similar way to that described with reference to
Fig. 3, and the tubular roller stock is secured on the shaft by a couple of split
conical wedge rings d, ď.
According to the arrangement illustrated in Fig. 5, the roller facing is mounted
on the flanged tubular roller stock c³ in a similar manner to the foregoing, and the
tubular roller stock is secured on to the shaft b by feathers g, g¹, or a long key h.
Figure 6 illustrates a modification in which two roller facings are mounted on a
single tubular roller stock c³. This roller stock is made with a central flanged
division c, and its outer ends are tapered, the smallest diameters being towards
each other. The flanged end cheeks c, c³, are secured on the tapered outer ends of 3
the tubular roller stock by split double-coned wedge rings d*, d**. The roller
stock c² is secured on the shaft b by wedge rings d, d².
It will be evident the details may be modified without departure from the
essential features of my Invention.