IMPROVEMENTS IN ROTARY AND OTHER BRUSHES
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by James Hill Cheatle at the Office
of the Commissioners of Patents, with his Petition, on the 24th December
1864.
I, JAMES HILL CHEATLE, of Birmingham, in the County of Warwick, Brush
Maker, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN ROTARY AND OTHER BRUSHES," to be as follows:-
My Invention consists of the improvements, herein-after described, in con-
structing rotary brushes for sweeping streets, floors, and other surfaces, part
of which improvements may be applied to other brushes.
In constructing a rotary brush according to my Invention I secure the bass
fibre or bristle by compressing it near its middle between parallel surfaces.
I prefer to make a rotary brush with four equidistant radial series of tufts or
bundles of bass fibre or bristle, which I secure between parallel surfaces, in
the following manner :-The tufts or bundles I employ are of a length equal
to the diameter of the rotary brush to be made and cross each other at their
middle, the two series of tufts or bundles thus crossing each other making
four radial rows of tufts or bundles. The tufts or bundles situated in one
plane alternate with the tufts or bundles situated in a plane at right angles.
thereto, and the whole are held together by means of bars of angle iron. Four
bars of angle iron having a length equal to the brush are taken and are placed
in the four angles formed by the crossing of the tufts or bundles, the said bars
of angle iron fitting in the said angles. By this arrangement each of the four
series of tufts or bundles is enclosed between two parallel plates constituting

page_text: the sides of the angle iron, and by means of screws passed through the angle
iron and nuts screwing on the ends of the said screws the four bars of angle
iron are bound firmly together and the tufts or bundles of bass fibre or bristle
held securely between them. The brush is provided with centres at its ends
which turn in a frame, the latter being supported on a pair of wheels on which
the brush is propelled or drawn along. By means of toothed gearing the
rotary motion of the last described wheels is transmitted to the brush, so that
on drawing or propelling the brush along it is made to rotate and to sweep
the surface over which it is drawn or propelled. The method described of
fixing the bass fibre or bristle, namely, by compression between two parallel
surfaces, may be applied to brushes other than rotary. For example, in
making a broom I take two strips or bars of wood or iron, and placing a row
of bass fibre or bristle between them I compress the said bars upon the ends
of the said bass fibre or bristle by means of screws and nuts. When two rows
of bass fibre or bristle are required, I use three of the said strips or bars,
compressing the second row of bass fibre or bristle between the second and
third strips or bars, and so on, when a broom containing more than two rows
of bass fibre or bristle is to be made. This method of fixing the bass fibre or
bristle is applicable to brushes in general, but is less applicable to small brushes
than to large brushes.