A New or Improved Process and Means or Apparatus for Facilitating the Attachment of Veneers to Various Bodies or Surfaces.
Year: 1892

page_text: Date of Application, 8th July, 1892-Accepted, 17th Sept., 1892
COMPLETE SPECIFICATION.
A New or Improved Process and Means or Apparatus for Facilitating
the Attachment of Veneers to Various Bodies or Surfaces.
I, GEORGE SAUTER of the City of Charlottenburg in the Kingdom of Prussia
and Empire of Germany 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:—
The invention relates to a process and means or apparatus, by the aid of which
veneers of wood or any suitable material may be glued to the surface of other
bodies, wood plaster, or the like.
The surface to which the veneer is to be fastened may be plane or concave or
convex or of any other complex form.
Hitherto it was necessary to procure a wooden or metallic negative or caul of
the body to be veneered, a requirement which in cases of less or more complex form
was very difficult protracted and expensive.
Between this heated caul and the body was placed the veneer coated with glue,
and then both were pressed together by clamps or other mechanical devices until
the veneer was bent in a manner corresponding with the shape of the body, and
pressed into contact therewith at every point, when the whole device was allowed
to cool down until the glue had set, and cemented the veneer to the body.
According to the present invention, in its result the veneering remains the same,
but the process and the means for carrying it out are different; that is to say
instead of employing a rigid caul I use a fluid or gaseous one, which is separated
from the veneer by a flexible diaphragm, and which possesses the required heat and
furnishes the requisite pressure.
And in order that the said invention may be more clearly understood and readily
carried into effect, I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical transverse section of an apparatus illustrating the application
of the invention to an approximately straight moulding.
Figures 2 to 4 are respectively a vertical transverse section a plan and a vertical
longitudinal section illustrating a modified form of apparatus suitable to be
employed in connection with mouldings either straight or otherwise shaped.
Figure 5 represents a vertical transverse section of a further modification
suitable for veneering a fluted column.
In the several figures of the drawings in which like parts are indicated by similar
letters of reference a represents the body to be veneered, g the veneer, and d the
flexible diaphragm.
Referring to Figure 1, the body a is supposed to be a long narrow wood moulding
suitable for picture frames and the like.
The body a is placed in a suitable box b, the cover c of which carries upon its
upper side a pressure gauge a thermometer, an admission pipe e, an outlet pipe f
for steam, gas, water, or the like together with the necessary cocks couplings and
fittings and on its underside the cover c has attached thereto a diaphragm or flexible
bagd secured in any of the many convenient and well known ways so as to be gas
and, water tight and this diaphragm or bag d must be large enough when the cover c
is fastened to the box b by clamps screws or the like to cover the inner unoccupied
.walls of the box b and also the face of the body a without stretching.
The most suitable material for the diaphragm or bag is thin soft-vulcanized

page_text: rubber previously shaped as nearly as possible to the form of the space between the
body a and the lid or cover c.
The veneer g, of sufficient superficial area, and previously coated with hot glue,
is laid upon the surface of the body a, the cover is placed upon the box 6 and
securely fastened thereto with the diaphragm or bag a depending therefrom and
resting upon the veneer g.
Hot gas, water, steam or other fluid under suitable pressure is now admitted
through pipe e between the cover c and the diaphragm or bag d until the veneer g
softened by the heat of the fluid contained in the bag d is by the pressure of the
fluid forced into close contact with every part of the body a.
When this result has been attained the hot fluid is allowed to pass off through
pipe and is replaced by cold fluid having the original pressure and which is allowed
to circulate through the bag d until the glue has become set and has united the
veneer g securely with the body a when the process is complete.
The flow of the fluid is now stopped, the fluid contained in the apparatus
is allowed to flow off through f, the box b opened, and the veneered body a
removed.
Instead of fastening the diaphragm or bag d to the cover c of the box b as herein-
before described, it may have the form of a prismatic pipe tube or bag complete in
itself and closed by flat pieces at both ends as shown at Figures 2, 3, and 4.
This prismatic tube d'or bag is provided at both ends with short tubular necks or
sleeves communicating with the inlet and outlet pipes e and f and is laid in the
box bas represented in the drawing, and the process is carried out in the manner
herein before described with respect to Figure 1.
When the hot water or other fluid has filled the tube d and the pressure acts
thereon, the diaphragm tube or bag d is pressed forcibly in contact not only with
the cover c, but also with the walls of the box b and the veneer g.
In cases where the body a is required to be veneered more or less upon all sides,
the diaphragm or bag d may envelop the body a as represented at Figure 5, which
shows a fluted column as the body a to be veneered.
After the sheet of veneer g is coated with glue it is wrapped around the column a
and provisionally fastened to it by ties of string, or by tacks, and the body a is then
placed in a cylindrical rubber bag d the upper open end of which is closed and
fastened by a string or other tie, and covered by a rubber cap.
The body a thus prepared is placed in a cylindrical closed vessel b provided at
the bottom with an outlet pipe f and at the top with an inlet pipe e.
The hot gas or water under pressure is then introduced into the vessel b and acts
from all sides upon the diaphragm d and the veneer 9 pressing the latter upon the
body a and into the fluting or pattern thereof.
In some
cases a plain sheet of rubber or the like may be advantageously
employed as a diaphragm d more especially when the body a can be enveloped
in it, care being taken that the joints of the sheet are made gas or water tight in
any suitable way.
By the aid of the foregoing description and explanation of the substantial
features of the invention it will be an easy matter to adapt suitable apparatus to
other forms of bodies to be veneered than those shown as examples.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The process of attaching veneers to bodies consisting in pressing the veneer
into contact with the body by means of a fluid or gaseous caul separated from the
veneer by a flexible impervious diaphragm, and which caul possesses the required
heat and pressure substantially as herein shown and described and for the purpose
stated.
A
2. The means or apparatus employed for carrying out the process referred to in
the preceding clause consisting of a fluid or gaseous caul possessing the required

page_text: heat and pressure and separated from the veneer by a flexible impervious diaphragm
substantially as herein shown and described and for the purpose stated.
3. In means or apparatus for facilitating the attachment of veneers to bodies, the
combination of a flexible diaphragm adapted to be pressed upon the veneer by fluid
or gaseous pressure and a box or receptacle to contain the body the veneer and the
diaphragm and means for introducing the required fluid substantially as herein
shown and described, and for the purpose stated.
Dated this 8th day of July 1892.
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.