Improvements in the Manufacture of Painters' Brushes and the like.
Year: 1896

page_text: Date of Application, 13'h Feb., 1896
Complete Specification Left, 13th Nov.. 1896-Accepted, 6th Feb., 1897
Improvements in the Manufacture of Painters' Brushes and
the like.
A communication by THE VEREINIGTE PINSELFABRIKEN, of Nuremberg, in the
Empire of Germany, Brush Manufacturers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham,
in the County of Warwick, and 31, High Holborn, in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
In the methods hitherto employed for making brushes (painters' brushes and the
like) the connection of the separate hairs or bristles with one another and the
brush or bristle block with the handle, was either effected by means of adhesive
substances such as glue, pitch, or the like, by fastening with wire or cord, or by
gripping the bundle in a metal holder. The former method mainly suffers from
the drawback that when the brush is in use the connection is dissolved by
mechanical or chemical action, and the brush is thereby destroyed, whilst in the
method mentioned in the second place the bristles or hairs have to be gripped for a
considerable length, thus causing a great loss of material.
The present invention has for its object the making of brushes by a method
which not only secures very great durability of the brush but also renders
possible the most favourable utilization of the length of the bristles or hairs.
This method mainly consists in the ends of the bunch or tuft of bristles or hairs
which are intended to be fastened in the brush ferrule being treated with a
pulverulent substance, which is filled in between the bristles or hairs. The treated.
end undergoes therefore an increase in volume and consequently also in diameter,
so that if the bunches of bristles or hairs after being tied are inserted in a holder
or a ferrule so as to grip the same at the lower end, a splayed part will remain
projecting from the ferrule, the diameter of which will be considerably greater
than that of the ferrule. This splayed part is then placed in metal jaws or the
like and by strong lateral pressure is so far compressed that it can be forced into
the ferrule by means of a press stamp acting on the end of the tuft of bristles or
hair. In consequence of the taper form of the splayed end of the bundle or tuft
of bristles or hair produced by the treatment with solid material, such end is
forced in the form of a wedge so firmly into the ferrule that without using an
adhesive substance an absolutely sure and reliable fastening obtained.
For filling material, a substance is employed which is insoluble in all ordinary
liquids likely to be used so that no loosening of the connection is possible when
the brush is in use. The brush holder or ferrule may be either conical or cylindrical
in form.
As the bristles or hairs are only gripped for a short part of their lower end, say
a few millimetres, they can be effectively used to almost their entire length for
forming the brush. Thus longer brushes may be made with bristles and hairs
of a given length than was possible with the old methods of manufacture and

page_text: this is therefore a circumstance of great importance in manufacturing on a large
scale.
The pressing or forcing of the splayed end by the compressing ring or jaws
takes place preferably by means of a slotted and consequently outwardly springing
stamp, which after effecting the pressure may be easily again withdrawn from the
holder or ferrule.
The brush handle prepared in the above manner may however itself be used as
a stamp, which is thus equally pressed into the ferrule or holder and connected
therewith by the subsequent pressing. In this case the brush-handle may be
slotted to give it a spring action.
Dated this 12th day of February 1896.
WM. P. THOMPSON & Co.,
Agents.
Improvements in the Manufacture of Painters' Brushes and
the like.
A communication by THE VEREINIGTE PINSELFABRIKEN, of Nuremberg, in the
Empire of Germany, Brush Manufacturers.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E. of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham
in the County of Warwick and 322 (late of 31) High Holborn in the County of
Middlesex, Civil Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
In the methods hitherto employed for making brushes (painters' brushes and
the like) the connection of the separate hairs or bristles with one another and the
brush or bristle block with the handle, was either effected by means of adhesive
substances such as glue, pitch, or the like, by fastening with wire or cord, or by
gripping the bundle in a metal holder. The former method mainly suffers from
the drawback that when the brush is in use the connection is dissolved by
mechanical or chemical action, and the brush is thereby destroyed, whilst in the
method mentioned in the second place the bristles or hairs have to be gripped for a
considerable length, thus causing a great loss of material.
The present invention has for its object the making of brushes by a method
which not only secures very great durability of the brush but also renders possible
the most favourable utilization of the length of the bristles or hairs.
This method mainly consists in the ends of the bunch or tuft of bristles or hairs
which are intended to be fastened in the brush ferrule being treated with a
pulverulent substance, such as sand, preferably moulders' sand which is filled in
between the bristles or hairs. The treated end undergoes therefore an increase in
volume and consequently also in diameter, so that if the bunches of bristles or
hairs after being tied are inserted in a holder or a ferrule so as to grip the same at
the lower end, a splayed part will remain projecting from the ferrule, the diameter
of which will be considerably greater than that of the ferrule. This splayed part
is then placed in metal jaws or the like and by strong lateral pressure is so far
compressed that it can be forced into the ferrule by means of a press stamp acting
on the end of the tuft of bristles or hair. In consequence of the taper form of the
splayed end of the bundle or tuft of bristles or hair produced by the treatment

page_text: with solid material, such end is forced in the form of a wedge so firmly into the
ferrule that without using an adhesive substance an absolutely sure and reliable
fastening is obtained.
For filling material, a substance such as sand is employed which is insoluble in
all ordinary liquids likely to be used so that no loosening of the connection is
possible when the brush is in use. The brush' holder or ferrule may be either
conical or cylindrical in form.
As the bristles or hairs are only gripped for a short part of their lower end, say
a few millimetres, they can be effectively used to almost their entire length for
forming the brush. Thus longer brushes may be made with bristles and hairs of a
given length than was possible with the old methods of manufacture and this
is therefore a circumstance of great importance in manufacturing on a large
scale.
The pressing or forcing of the splayed end by the compressing ring or jaws
takes place preferably by means of a slotted and consequently outwardly springing
stamp, which after effecting the pressure may be easily again withdrawn from the
holder or ferrule.
The brush handle prepared in the above manner may however itself be used as
a stamp, which is thus equally pressed into the ferrule or holder and connected
therewith by the subsequent pressing. In this case the brush-handle may be slotted
to give it a spring action.
The form of construction hereinbefore described is shown in Figures 1 and 2 of
the accompanying drawing, Figure 1 showing a tuft b of bristles inserted in the
ferrule a in a filled-out condition, that is to say, with the splayed part 6' projecting
beyond or over the ferrule. This splayed part is compressed in such a way that
after au open band c has been placed round it, it is brought between two press
jaws d, and together with the band compressed until its diameter corresponds to
that of the rear end of the ferrule a. On the splayed part thus compressed and
gripped in this manner (see Figures 3 and 4) the stamp (Figure 5) is then
placed, which is made to have an outwardly springing action by being slotted
longitudinally.
e
The stamp is pressed downwards with comparatively high pressure and thus
forces the splayed part so far into the holder that the latter is only inserted a
short way into the front end, Figure 5.
If the pressing in is to take place by means of the brush handle instead of with
the stamp as herein before mentioned, the said handle is also made to have a spring
action on its bottom end, Figure 6.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, I declare that what I claim is :-
An improved method of making brushes, which consists in splaying out the rear
end of the bunched bristles or tuft of hair so as to project over the rear edge of
the brush ferrule by filling out with a suitable substance, then compressing said
splayed end sideways, and by means of a stamp or handle acting in an axial
direction on the surface of the bunch, forcing the latter so far through the brush
ferrule that it is only held by a short part and is durably connected in itself and
with the ferrule by means of the side and axial pressure obtained, substantially as
described.
Dated this 10th don of Narambar 1806
WM. P. THOMPSON & Co.,
Agents.