A Method of Clearing Timber of Sap.
Year: 1889

page_text: Date of Application, 2nd Nov., 1889
Complete Specification Left, 1st Aug., 1890-Accepted, 13th Sept., 1890
PROVISIONAL SPECIFICATION.
A Method of Clearing Timber of Sap.
I, FRANZ PODANY, Senr., of 114 Hauptstrasse, Hernals, near Vienna, Austria,
Manufacturer of wood mosaic articles, do hereby declare the nature of this invention
to be as follows:-
This invention relates to a method of tapping off the sap of trees that are to be
felled for use as timber, and it has for its object to deprive the wood of its sap in order
to improve its strength, durability and colour, and to render it more serviceable for
the manufacture of parquetry, veneers and like articles.
According to this invention, about a year before felling the tree, an inclined hole
is bored diametrically in the trunk a short distance above the soil, and both the mouths
of this hole are connected together by a groove cut round the trunk through the bark
and into the sap wood. A number of inclined radial holes are then hored from
this groove into the diametrical hole, from the lower mouth of which the sap
flows out.
Dated this 2nd day of November 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
A Method of Clearing Timber of Sap.
I, FRANZ PODANY Senr. of 114 Haupstrasse, Hernals, near Vienna, Austria,
Manufacturer of wood mosaic articles, 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 :-
This invention relates to a method of tapping off the sap of trees that are to be
felled for use as timber, more especially for parquetry, veneer, and the like, and it
has for its object to deprive the wood entirely of its sap, in order to improve it in
strength, durability and fineness of colour.
According to the invention, the purpose in view is attained by forming in the tree
to be felled about a year before felling it a number of bore holes or channels arranged
in the particular manner shewn in the annexed sheet of drawings in which Fig. I is
an elevation of the bottom end of a stem. Fig. 2 a section on line h h, Fig. 1.
Of all the perforations or bore holes shewn in the drawing that marked with a
is made first, as near the surface of the soil as possible and in an inclined position.
Afterwards, a band of a certain breadth is so laid round the stem of the tree that it
covers both ends or orifices of the channel a, and along the edges of the said strip or
ribbon cuts are made, passing through the bark and bast and penetrating into the sap
wood. After having removed the ribbon, the whole material between the two annular
cuts is cut out, so as to form an inclined annular groove around the stem. This
groove prevents the sap from rising in the cambiurn layer, and commencing at the
bottom of the said groove, a number of radial channels c are bored, all inclined ·
toward the centre where they open into the bore a. Through this latter bore, the
sap is allowed to flow out, or when it is very abundant, as is the case in spring, it may
be drawn off through the said bore a by means of a pump.
The tree tapped in the manner described, is allowed to remain standing about a
year before being felled, and it will give a wood which, as compared with that of
hon-tapped trees, excels in strength, durability and fineness of colour.

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what 1
claim is :-
The described method of tapping off the sap of trees to be felled for the purpose
of making timber, the said method consisting in first making an inclined perforation
through the stem at a small distance above the surface of the soil, afterwards
connecting both apertures or orifices of the said perforation by an inclined annular
groove penetrating through the bark and basi into the sap wood, and finally boring
a number of radial channels, beginning in the said groove and descending toward
the axis of the stem, where they join with the diametrical bore, substantially as
described.
Dabad this 21st law of Ll. 1800
ABEL & IMRAY,
Agents for the Applicant.