The Useful Arts Employed in the Construction of Dwelling Houses. Second EditionAnonymous
History
The Useful Arts Employed in the Construction of Dwelling Houses. Second Edition
Anonymous
Architecture, Domestic; Building materials; Dwellings -- Design and construction
In such a manner as this veneers are now cut from the timber in this
country. But it is stated that the Russians have devised a very
curious and effective method of cutting veneers, without the use of
a saw, and without making any waste of material. It is a _planing_
machine, the action of which is so accurate, that veneers thin enough
for the covering of books, and for lithographic and other engravings,
have been produced; thus serving the place of paper. The operation
is begun by placing the timber from which the leaf is to be cut upon
a square axle, where it is revolved, and made circular by a turner’s
gouge. The blade of a plane of highly-tempered steel, and rather
longer than the cylinder of wood, is fixed at the extremity of a frame
six or seven feet in length, in such a manner as to exert a constant
pressure upon the cylinder, and pare off a sheet of equable thickness,
which folds upon another cylinder like a roll of linen. The frame
to which the blade is attached is moveable at its lower extremity,
and by the action of a weight it depresses in proportion as the mass
diminishes in substance. That this depression may be progressive and
perfectly regular, the inventor has appended a regulator to the machine
consisting of a flat brass plate, preserved in an inclined direction,
upon which the frame descends as the regulator itself is advanced. The
motion is communicated to the cylinder of wood by several cog-wheels,
which are turned by a crank. One hundred feet in length of veneering
may be cut by this machine in the space of three minutes.
When veneers are produced by the action of circular saws, as is now
almost universally the case in England, it is evident that both
surfaces must be rough, from the marks of the serrated edge of the
cutting instrument; and it is in this rough state that they are
purchased by cabinet-makers or others who employ them in veneering
articles of furniture. The operations which are then to be performed
are, to bring the surface of the veneer to a tolerable level, to fix
the veneer to the article of furniture, and to clean and polish it when
so fixed.
Supposing the top of a sideboard to be the article which is to be
veneered. The workman cuts out a piece of veneer, a little larger than
is actually required, to allow for waste; and then lays it flat on
his work-bench. With a veneering plane--which is a small-sized plane,
having an iron jagged with notches like the teeth of a very fine
saw--he works steadily over the whole surface of the veneer, carrying
the plane in the direction of the grain of the wood. The action of this
plane-iron removes all the saw marks, which were irregular in their
course, and gives instead of them a series of regular parallel channels
from end to end of the piece of veneer; these channels are but small in
depth, and their object is to retain the glue which is afterwards used
in the process of veneering.
Public-domain text, read in full here on John Shaqi.
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