Year: 1892

page_text: Date of Application, 29th Nov., 1892
Complete Specification Left, 25th Jan., 1893-Accepted. 24th June, 1393
Fig. 2 a front elevation, and
Fig. 3 a plan, of apparatus for the manufacture of tubes according to this
invention.
Figs. 4 and 5 are respectively a part side view and end view of a tube constructed
according to this invention.
Figs. 6 and 7 are corresponding views of an ornamental tube.
Figs. 8 and 9 are diagrammatic views illustrating the manufacture of such
tubes.
A tube of the kind shown in Figs. 4 and 5 may be turned varnished and polished,
and may be employed for various purposes according to the size and thickness
thereof, for instance as a tobacco pipe-stem, walking stick, billiard-cue, or lance
shaft; or in the construction of furniture, as for the feet or legs of chairs, and the
like. When employed as a pipe-stem a tube of this kind has the advantage of a
large bore, and gives a dry smoking pipe.
As shown in Figs. 6 and 7, a tube of this kind can be readily ornamented, by
inserting or coiling underneath the outermost covering layer b of the vencer, a
veneer c of different colour, and removing by stamping, punching, perforating or
burning, parts of the outer veneer layer down to the veneer c.
In this manner the
underlying veneer c shows through the removed parts of the upper veneer and
forms the pattern or design.
In manufacturing these tubes, as illustrated in Figs. 8 and 9, a piece of veneer a
whose length depends on the thickness of the tube to be made, is spread out and
partly coated with glue on one side in such a manner as to leave an uncoated
border a¹. The width of this uncoated border depends on what is to be the
finished diameter of the bore of the tube. The said border a¹ is inserted in a
hollow mandrel d provided with a longitudinal slot at d². This mandrel is
cylindrical or conical according to the form of the tube to be made. The border a
is inserted in the slot d², and bears closely against the inside or perforation of
the mandrel. A piece of wire e is inserted to fill up the perforation d¹ and clamp
the veneer firmly. The mandrel d is then placed between two plates and y,
which can be brought to bear on the mandrel d and moved in opposite directions.
To render the veneer soft and capable of being punched one or both plates f, g
may be heated, whereby the glue is at the same time melted. By moving the
plates.in opposite directions as shown by the arrows I, I Fig. 9, the mandrel is
rotated, the veneer is coiled upon the same, and the several veneer layers are
united together, that is to say formed, into a finished tube.
Referring now to Figs. 1 to 3, two plates i and k are mounted on the frame L so
as to be capable of being moved to and fro in opposite directions by gearing com-
prising a hand-wheel !, on the axle of which is mounted a toothed-wheel m gearing
DQ17

page_text: with a second toothed-wheel n. On the axle of the latter there is a driving
pinion gearing with a rack secured to the plate i. Another toothed-wheel » on
the axle o drives a toothed-wheels which engages a pinion (on an axle u), gearing
with a rack on the plate k.
To enable the plates i, k to be moved towards, or separated from, one another,
without changing the tooth-gearing, the tooth-wheel is carried by a pair of
equal levers ss journalled loosely on the shafts u and o. The coiling is effected
by the joint action of the plate and a plate y that is carried by screws g', g',
which enable it to be inclined in any required direction, as for instance sideways to
make conical tubes.
The plate is guided by rollers i, , and the plate k by rollers ', k¹. The
upper plate is connected to a lever w, which can be secured at any desired
point by pressing it into the recesses of a notched bar w¹. This lever is
fulcrummed on a pin w². The rear end of the lever w is connected by a rod w³
with a lever which is provided with notches w and an adjustable weight w, and
is fulcrummed at w. This lever is connected by a link a with rods a¹ which
are connected with the upper frame 2 carrying the plate k. The plate k is raised
by means of the lever w, and after the mandreld (Fig. 9) has been placed between
the plates y and k, the said lever is released whereupon the upper plate k descends
by gravity being assisted by the weight w¹.
The heating of the plate g is conveniently effected by gas jets from a serpentine
pipe y under the table g.
Dated this 29th day of November 1892.
EMIL LUDKE,
By L. W., per F. B.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Wood Tubes and Apparatus
therefor.
1, EMIL LÜDKE, of Wenigenjena-Camsdorf, Thüringen, Germany, Manu-
facturer, 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 :-
number of layers one
This invention relates to the manufacture of tubes from wood veneer (herein-
after termed "veneer"). According thereto the veneer is coiled in any desired
over the other, and the several layers are glued
together, a tube being thus formed which is extremely strong, and cheap and
In making such tubes I employ apparatus such as hereinafter
is not liable to warp.
described.
Referring to the drawings filed with my Provisional Specification,
Fig. 1 is a longitudinal section,
Fig. 2 a front elevation, and
Fig. 3 a plan, of apparatus for the manufacture of tubes according to this
invention.
Figs. 4 and 5 are respectively a part side view and end view of a tube con-
structed according to this invention.
Figs. 6 and 7 are corresponding views of an ornamental tube.
Figs. 8 and 9 are diagrammatic views illustrating the manufacture of such
tubes.
A tube of the kind shown in Figs. 4 and 5 may be turned, varnished and
polished, and may be employed for various purposes according to the size and
thickness thereof, for instance as a tobacco pipe-stem, walking stick, billiard-cue,
or lauce shaft; or in the construction of furniture, as for the feet or legs of
chairs and the like. When employed as a pipe-stem a tube of this kind has the
advantage of a large bore, and gives a dry smoking pipe.

page_text: As shown in Figs. 6 and 7, a tube of this kind can be readily ornamented, by
inserting or coiling underneath the outermost covering layer 6 of the veneer,
a veneer c of different colour, and removing by stamping, punching, perforating
or burning, parts of the outer veneer layer down to the veneer c. In this manner
the underlying veneer c shows through the removed parts of the upper veneer b
and forms the pattern or design.
In manufacturing these tubes, as illustrated in Figs. 8 and 9, a piece of veneer a
whose length depends on the thickness of the tube to be made, is spread out and
partly coated with glue on one side in such a manner as to leave an uncoated
border a¹. The width of this uncoated border depends on what is to be the
finished diameter of the bore of the tube. The said border a' is inserted in a
hollow mandrel d provided with a longitudinal slot at d². This mandrel is
cylindrical or conical according to the form of the tube to be made. The
border a¹ is inserted in the slot d², and bears closely against the inside or per-
foration of the mandrel and a piece of wire e is inserted to fill up the
perforation d and clamp the veneer firmly. The mandrel d is then placed
between two plates f and g, which can be brought to bear on the mandrel d and
be moved in opposite directions. To render the veneer soft and capable of being
punched, one or both plates f, g may be heated, whereby the binding agent, such
as glue is at the same time melted. By moving the plates in opposite directions as
shown by the arrows I, I Fig. 9, the mandrel is rotated, the veneer is coiled upon
the same, and the several veneer layers are united together, that is to say formed,
into a finished tube.
Referring now to Figs. 1, 2 and 3, i and k are two plates mounted on the frame L
so as to be capable of being moved to and fro in opposite directions by gearing
comprising in the arrangement shown a hand-wheel 1, on the axle of which is
mounted at each end a toothed-wheel m gearing with a second toothed-wheel n.
On the axle o of the latter there is a driving pinion gearing with a rack g
secured to the plate i. Another toothed-wheel on the axle o drives a toothed-
wheels which engages a pinion t fixed on an axle u and gearing with a rack von
the plate k.
To enable the plates i, k to be moved towards, or separated from, one another,
without changing the tooth-gearing, the tooth-wheels is carried by a pair of
similar or equal levers s² journalled to turu freely on the shafts and o.
coiling is effected by the joint action of the plate k and a plate g that is carried by
screws g, g¹ on the plate i and which enable the said plate y to be inclined in a
forward, rearward or sideways direction, the latter direction being suitable for
making conical tubes.
-
The
The plate i is guided by rollers ,, and the plate k by rollers k¹, k¹. The upper
plate is connected to a lever W which can be secured at any desired point by
pressing it into the recesses of a notched bar w'. This lever is fulcrummed on a
pin w. The rear end of the lever wis connected by a rod w³ with a lever w
which is provided with notches w7 and with an adjustable weight w0%, and is
fulcrummed at 8. This lever we is connected by a link a with rods which are
connected with the upper frame a² carrying the plate k. The plate k is raised by
means of the lever wand after the mandrel d (Fig. 9) has been placed between the
plates g and k, the said lever is released whereupon the upper plate k descends by
gravity being assisted by the weight wt.
The heating of the plate g is conveniently effected by gas jets from a serpentine
pipe y under the table g.
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. A wood tube composed of wood veneer coiled upon itself so as to form a
number of layers that are glued or connected together, for the purpose of
obtaining great strength and durability and obviating warping.

page_text: 2. A wood tube of the kind specified in the preceding claim in which the outer-
most layer of veneer is perforated and has within it a coil or layer c of a
differently coloured veneer for the purpose of imparting an ornamental appearance
to the surface of the tube substantially as described.
3. The herein described method of manufacturing tubes from wood veneer,
according to which a sheet of veneer is coated with a binding agent such as glue
except at one border a¹, then the uncoated border of the veneer is inserted into a
slot of a mandrel and fixed and then the veneer together with the mandrel is
placed between two plates ƒ and g to which movements in opposite directions are
imparted and one or both of which is or are heated whereby the sheet of veneer is
coiled upon itself and rendered supple by the heat of the plates and the binding
agent is melted by such heat so that the several layers of vencer are secured
together as set forth.
4. For making tubes of wood veneer according to the method specified in
the preceding claim, a machine constructed with two tables i, k, of which
the former carries a coiling plate g that is capable of being heated and of
being inclined forwards, rearwards and sideways, and the upper coiling plate k, is
held by a lever w and is capable of being pressed against the inserted mandrel d
by a weight w after the said lever w has been set free substantially as herein
described.
5. In a machine of the kind referred to in the preceding claim, the arrangement
for the purpose of moving the coiling plates in opposite directions, of mechanism
comprising the pinion adapted to be operated by the handle and to move the
plate i, and the toothed-wheel t arranged to move the upper table k, and operated
from the shaft o of the toothed-wheel p by means of a wheel s mounted on equal-
armed levers substantially as described.
Dated this 25th day of January 1893.
E. LUDKE,
By L. W., per F. B.