IMPROVEMENTS IN BRUSHES FOR PAINTING, DISTEMPERING AND THE LIKE
Year: 1882

page_text: LETTERS PATENT to John Culmer of Hornsey Road Holloway in the County
of Middlesex for an Invention of "IMPROVEMENTS IN BRUSHES FOR PAINTING,
DISTEMPERING AND THE LIKE"
PROVISIONAL SPECIFICATION left by the said John Culmer at the
Office of the Commissioners of Patents on the 23rd October 1882.
JOHN CULMER of Hornsey Road Holloway in the County of Middlesex
"IMPROVEMENTS IN BRUSHES FOR PAINTING, DISTEMPERING AND THE LIKE
"
Brushes of flat or oval form such as are employed for painting, distempering and
the like are often made in the following manner. The handle is widened out at the
base of the brush and cut away at each side so as to present a thin tenon on each
side of which is laid a bunch of bristles which are bound round by a number of
convolutions of wire or cord. In order to prevent the binding and bristles from
slipping off, the tenon is made with an ear at each side projecting beyond the
binding, and in order to get adequate strength for these ears the tenon has to be
made so as to extend some distance beyond the binding. The object of my
invention is to save a considerable part of the depth of tenon and thereby
economise bristles in respect of length by a construction which also greatly
strengthens the tenon itself. For this purpose I run a saw cut into the tenon
lengthwise and into this I insert a metal tongue having the two projecting ears
which being of metal give the necessary strength in little depth while the metal
materially strengthens the tenon. The binding by squeezing the tenon gives
sufficient hold to retain the metal in the saw cut. Sometimes the brushes are
double in which case I prefer to make the two metal tongues in one piece with an
undercut slit in the middle, to admit the two bindings.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and of
nn Order of the Lord Chancellor, filed by the said John Culmer in the Great
Seal Patent Office on the 18th May 1883.
#t
JOHN CULMER, of Hornsey Road Holloway in the county of Middlesex
IMPROVEMENTS IN BRUSHES FOR PAINTING, DISTEMPERING AND THE LIKE"
Brushes of flat or oval form, such as are employed for painting, distempering and
the like are often made in the following manner. The handle is widened out at
the base of the brush and cut away at each side, so as to present a thin tenon on
each side of which is laid a bunch of bristles, which are bound round by a number
of convolutions of wire or cord. In order to prevent the binding and bristles from
slipping off, the tenon is made with an ear at each, side projecting beyond the
binding, and in order to get adequate strength for these cars, the tenon has to be
made so as to extend some distance beyond the binding The object of my
invention is to save a considerable part of the depth of tenon and thereby economise
bristles in respect of length by a construction which also greatly strengthens the
tenon itself. For this purpose, I run a saw cut into the tenon lengthwise, and into
this I insert a inetal tongue having the two projecting cars, which being of metal,
give the necessary strength in little depth, while the metal materially strengthens
the tenon. The binding, by squeezing the tenon, gives sufficient hold to retain the
metal in the saw-cut. Sometimes, the brushes-are double, in which case I prefer
to make the two metal tongues in one piece with an undercut slit in the middle to
admit the two bindings.
Fig. 1 is a part side view and fig 2 a part longitudinal section of a flat brush
according to my invention. A is the handle which is thinned, so as to present in
front a tenon a; on each side of which the bristles B are held by the binding C.
I run into the tenon a a saw cut into which I insert a piece of metal D of the shape
shown in fig 3 having two projecting ears did which prevent the binding. C from
slipping forward, the piece D being itself held firmly in the saw-cut of a by the
strain of the binding. Sometimes the bristles are put on in two bunches, each
separately bound as shewn in fig. 4. In such cases I make the plate D in the
form shown in tig. 5 with an undercut notch E through which are passed the
strands of the two bindings.
Having thus described the nature of my invention and in what manner the same
is to be performed, I claim―
In combination with the handle of a flat brush, its bristles and their binding, the
use of a metal plate D made with projecting ears d d and inserted in a saw-cut of
the tenon, substantially as and for the purpose herein set forth.
In Witness whereof I the said John Culmer have hereunto set my hand and
seal this Eleventh day of May in the year of our Lord one thousand, eight
hundred and Eighty-three.
Ast