Improvements in Round or Rotary Brushes.
Year: 1897

page_text: Date of Application, 29th Nov., 1897
Complete Specification Left, 30th July, 1898-Accepted, 3rd Sept., 1898
PROVISIONAL SPECIFICATION.
Improvements in Round or Rotary Brushes.
Dr. GEORGE LANGBEIN, of 261, Querstrasse, Leipzig, in the German Empire,
Electro-Chemist, do hereby declare the nature of this invention to be as
follows:-
The round or rotary brush forming the subject of this invention is chiefly
designed for use in scratch-brushing or polishing metal objects; it can, however,
also be advantageously employed for many other purposes.
In some of the brushes of this kind heretofore known, the separate groups
or sections of the brush are placed in transverse undercut grooves formed in the
periphery of a ring, which grooves are covered, at the side of the ring, with a
removable thin disc, in order to hold the sections of the brush in their proper
position. This brush has the disadvantage that the bristles cannot be set very
closely together, since material must be left in the carrier-ring between the
grooves receiving the brush sections, which limits the number of brush-sections
that can be inserted. Moreover it is not possible to replace single sections, for
instance those much worn-away or dishevelled, by new ones without removing
the brush from its shaft or carrier-pin, since it is not possible to remove a
section without loosening the cover-disc and separating it from the carrier-ring
to a distance at least as great as that corresponding to the width of the brush-
section.
.
In the round or rotary brush forming the subject of my invention, these dis-
advantages are obviated.
In making a round or rotary brush according to one form or modification of
my said invention, I provide a disc or wheel made in one piece, preferably of
brass or cast iron, in the periphery of which is formed an annular groove undercut
on both sides. The brush, wire, or pin-sections are mounted in sheet metal caps
or sockets, which are of the same breadth as the opening of the annular groove
and are bent around pins which project on both sides and give. the sections a
hold in the undercut parts of the annular groove. In order to introduce the
brush-sections into the annular groove, or to permit of their being interchanged,
the carrier disc or wheel is cut out at one place, and into the aperture so formed,
fits a cover-piece secured by a screw or by other suitable means. The said cover-
piece corresponds to the form of the edge of the disc or wheel and of the annular
groove, so that it forms a continuation of these parts when in its fixed position.
In another form or modification of my invention, which is more especially
suitable for smaller brushes, instead of the pins above mentioned, lateral exten-
sions are employed on the caps, or sockets, which extensions are so formed that
they find a hold in the inwardly turned edges of the groove. This is preferably
effected by giving the sheet-metal caps a dove-tailed form. In smaller forms,
the screw can be made, proportionally, so large that it, at the same time, forms
the closing piece.
The brush-sections lie closely against each other in the annular groove, without
requiring any partitions between them, so that the bristles, wires or pins of

page_text: the combined brush lie extremely closely together and considerably more bristles,
wires or pins can be introduced than is possible in the round or rotary brushes,
heretofore known.
The replacement of single sections can be effected very conveniently and
simply, and without removing the whole brush from its carrier-shaft or taking
the whole brush to pieces.
Dlated the 27th dov of Novinhon 1807
improvements in koung or Rotary brushes,
I, Dr. GEORGE LANGBEIN, of 261, Querstrasse, Leipzig, in the German Empire,
Electro-Chemist do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
―
The round or rotary brush forming the subject of this invention is chiefly
designed for use in scratch-brushing or polishing metal objects; it
can, however,
also be advantageously employed for many other purposes.
In some of the brushes of this kind heretofore known, the separate groups
or sections of the brush are placed in transverse undercut grooves formed in the
periphery of a ring, which grooves are covered, at the side of the ring, with a
removable thin disc, in order to hold the sections of the brush in their proper
position. This brush has the disadvantage that the bristles cannot be set very
closely together, since material must be left in the carrier-ring between the
grooves receiving the brush-sections, which limits the number of brush-sections
that can be inserted. Moreover it is not possible to replace single sections; for
instance those much worn-away or dishevelled, by new ones without removing
the brush from its shaft or carrier-pin, since it is not possible to remove a
section without loosening the cover-disc and separating it from the carrier-ring
to a distance at least as great as that corresponding to the width of the brush-
section.
In the round or rotary brush forming the subject of my invention, these dis-
advantages are obviated.
Figure 1 of the drawing shows the brush in side elevation and
Figure 2 in transverse central section.
Figures 3 to 6 show details of construction.
Figures 7 and 8 illustrate a modification.
cut on
In making a circular or rotary brush according to one form or modification
of my said invention, I provide a disc or wheel, made in one piece, preferably of
brass or cast iron, in the periphery of which is formed an annular groove r under-
both sides. The brush-wire or pin-sections are mounted in sheet-
metal caps or sockets d, which are of the same breadth as the opening of the
annular groover and are bent around pins e which project on both sides beyond
the ends of the said caps or sockets and hold the sections in the undercut parts
of the annular groove r. In order to introduce the brush-sections into the
annular groove, or to permit of their being interchanged, the carrier-disc or
wheel is cut out at one place and a cover-piece 6 fitting into the aperture so
formed, is secured therein by a screw f or by other suitable means. The said
cover-piece b corresponds to the form of the edge of the disc or wheel and of the

page_text: annular groove, so that it forms a continuation of these parts when in its fixed
position.
In another form or modification of my invention (shown in Figures 7 and 8)
which is more especially suitable for smaller brushes, instead of the pins above
mentioned, lateral extensions el are employed on the caps or sockets d, which
extensions are so formed that they find a hold in the inwardly turned edges
of the grooves T.
This is preferably effected by giving the sheet-metal caps a
dove-tailed form. In smaller forms, a screw f1 can be used, proportionally, so
large that it, at the same time, forms the closing piece, as shown in Figures 7
and 8.
The brush-sections lie closely against each other in the annular groove, without
requiring any partitions between them, so that the bristles, wires or pins of
the combined brush lie extremely closely together and considerably more bristles,
wires or pins can be introduced than is possible in the round or rotary brushes
heretofore known.
The replacement of single sections can be effected very conveniently and
simply and without removing the whole brush from its carrier-shaft or taking
the whole brush to pieces.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;-
1. A circular or rotary brush made up of individual tufts of bristles, wires,
pins or the like each mounted in a metal setting by means of which it can be
secured in an undercut annular groove formed around the periphery of a
carrying-disc and so arranged that the separate tufts can be exchanged or replaced,
without removing the disc from its shaft or carrier-pin, through an aperture
formed in one edge or wall of the groove, which aperture is normally covered
by a removable closing-piece.
2. The improved circular or rotary brush constructed substantially as described
and shown.