An Improved Process for the Manufacture of Wheels, Pulleys, and the like of Wood Veneers.
Year: 1898

page_text: Date of Application, 5th Apr.,
2000
1090
Complete Consification Loft 20th Doc 1508 Accented 18th Feb. 1899
Date of Application, sin Apr., 1990
Complete Specification Loft, 20th Doc 1500 Accented 18th Feb.
1899
An Improved Process for the Manufacture of Wheels, Pulleys, and the
like of Wood Veneers.
I, HENRY DANFLOU, of Cours Balguerie-Stuttenberg, détourné, Bordeaux, in the
Republic of France, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows;-
This
This invention relates to an improved process for the manufacture of wheels
for vehicles, pulleys, and other analogous articles by means of veneers.
process allows of making either the complete wheel or pulley of one block or of
making parts of the wheel or pulley, such as the hub, spokes, or felly, separately,
which parts are then joined together by any convenient method. This process
consists essentially in making out of sheets of veneer previously coated with glue
which are superposed and secured together by means of hydraulic or other pres-
sure, a block of the same thickness as the piece to be obtained and having at
least the same dimensions as this latter in the other directions, this block is
then cut to the form of the finished piece. Certain parts of the piece can then
be turned or planed etc. when necessary.
The sheets of veneer used are obtained as usual by cutting trunks of trees of
any kind, their thickness can vary, for instance, from 1 to 8 millimeters. After
having been dried in a heated chamber these sheets, cut to the dimensions required
are coated with a water proof glue on one surface or on both, according if
they are intended to form one of the superficial layers or one of the inner layers
of the block to be obtained; the glue is then allowed to dry. The number
required of these wood-sheets is then superposed so that after compression the
piece has the desired thickness, when superposing the sheets, it is preferable,
in order to obtain a greater rigidity, so to place them that the fibres of the
successive layers are not parallel but cross each other perpendicularly or at, any
angle. The block thus formed is subjected to a strong pressure, for instance, to a
hydraulic pressure, between two plates which are heated by any appropriate
means. After 7 to 10 minutes of pressure, more or less, the block is removed,
and is cut by means of a saw or in any other way, either into a complete piece
for instance a wheel, pulley, etc. or into detached parts of objects of this kind.
To obtain objects, the two surfaces of which are not exactly flat or parallel,
but more or less concave or convex, it is sufficient to use press plates of corre
sponding form.
In the finished object the veneers are parallel with the plane of the wheel or
pulley, so that the surface of friction is composed of wood layers; perpendicular
to this surface; thus resistance to crush and to wear is extremely great. The
surface of friction can also be protected either by means of a metallic tire or by
means of a wooden band simple or composite and conveniently curved.

page_text: When the object to be obtained is to have a greater thickness than 45 mm.
for instance, it is difficult, if not impossible to make a block of veneers by
means of one single pressure, as the heat of the pressure plates heated by steam or
any other means, must penetrate all the sheets in order to obtain a good connec-
tion. In the case of greater thickness, one must therefor proceed by successive
pressure, for instance, when the object is to have 90 millimeters thickness a block
of 45 mm. will be first produced and to each side a thickness of about 22 mm.
of veneers coated with water-proof glue is applied and the whole is again submitted
to pressure. In order to obtain a very great thickness the same operation is
repeated several times.
The water-proof glue which I preferably use is composed of caseine, lime and
silicate of soda, after the veneers have been coated with this liquid glue, they must
be dried, as described before being subjected to connection under pressure. But
I claim also the right to use other glues which allow of attachment of the veneers
by pressure without being previously dried.
Dated this 5th day of Anvil 1000
An Improved Process for the Manufacture of Wheels, Pulleys, and the
like of Wood Veneers.
I, HENRY DANFLOU, of Cours Balguerie-Stuttenberg détourné, Bordeaux, in the
Republic of France, Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement;-
This
This invention relates to an improved process for the manufacture of wheels
for vehicles, pulleys, and other analogous articles by means of veneers.
process allows of making either the complete wheel or pulley of one block or of
making parts of the wheel or pulley such as the hub, spokes or felly separately.
which parts are then joined together by any convenient method. This process
consists essentially of making out of sheets of veneers previously coated with glue
which are superposed and secured together by means of hydraulic or other pres-
sure, a block of the same thickness as the piece to be obtained and having at
least the same dimensions as this latter in the other directions; this block is
then cut to the form of the finished piece.
Certain parts of the piece can then be turned or planed etc. when necessary.
The sheets of veneer used are obtained as usual by cutting trunks of trees of
any kind their thickness can vary for instance from 1 to 8 millimeters. After
having been-dried in a heated chamber these sheets, cut to the dimensions required
are coated with a water proof glue on one surface or on both, according if
they are intended to form one of the superficial layers or one of the inner layers
of the block to be obtained; the glue is then allowed to dry. The number
required of these wood sheets is then superposed so that after compression the
piece has the desired thickness; when superposing the sheets, it is preferable,
in order to obtain a greater rigidity, so to place the successive layers that they are
not parallel but cross each other perpendicularly or at any angle.
The block thus formed is subjected to a strong pressure, for instance to a

page_text: hydraulic pressure, between two plates which are heated by any appropriate
means. After 7 to 10 minutes of pressure more or less the block is removed
and is cut by means of a saw or in any other way, or turned or fashioned either
into a complete piece for instance a wheel, pulley etc. or into detached parts of
objects of this kind.
To obtain objects, the two surfaces of which are not exactly flat or parallel,
but more or less concave or convex it is sufficient to use press plates of corre-
sponding form.
In the finished object the veneers are parallel with the plane of the wheel or
pulley so that the surface of friction is composed of wood layers perpendicular
to this surface; thus resistance to crush and to wear is extremely great. The
surface of friction can also be protected either by means of a metallic tyre or by
means of a wooden band simple or composite and conveniently curved.
When the object to be obtained is to have a greater thickness than 45 mm.
for instance it is difficult if not impossible to make a block of veneers by
means of one single pressure as the heat of the pressure plates heated by steam or
any other means must penetrate all the sheets in order to obtain a good connec-
tion. In the case of greater thickness one must therefore proceed by successive
pressure for instance when the object is to have 90 millimeters thickness a block
of 45 mm. will be first produced and to each side a thickness of about 22 mm.
of veneers coated with water-proof glue is applied and the whole is again submitted
to pressure. In order to obtain very great thickness the same operation is repeated
several times.
The water proof glue which I preferably use is composed of caseine, lime and
silicate of soda; after the veneers have been coated with this liquid glue, they must
be dried, as described before being subjected to connection under pressure. But
I claim also the right to use other glues which allow of attachment of the vencers
by pressure without being previously dried.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I wish it to be understood that
I am aware that it has been proposed to manufacture the rims of pulleys of wood
veneers glued together with their grain or fibres crossing, the grain of the wood
in the outer layer and its alternate layers being disposed circumferentially; and
I do not broadly claim as my invention the employment of vencers glued together
with their fibres crossing, for the manufacture of pulleys and the like, but I
declare that what I claim is;-
The hereinbefore described process of manufacture of wheels, pulleys and the
like, or parts of these objects by means of sheets of veneer, in such a manner that
the grain or fibre of the veneer shall be in a plane at right angles to the axis of
the wheel, pulley, or the like.
alcu VITTO
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C.