Improvements in Wood-working Machinery.
Year: 1896

page_text: Date of Application, 19th June, 1896 Accepted, 25th July, 1896
Improvements in Wood-working Machinery.
I, WILHELM EDUARD FÖRSTL, of 42 Burggasse, Vienna VII, in the Empire
of Austria, Architect, 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 improvements in wood-working machinery and is
designed to provide an universal wood-working machine and an universal cutter
for different widths of cut.
The essential feature of the universal wood-working machine is the construction
of the same so that it will serve for doing the same work as three separate machines,
viz. a band-saw, a longitudinal drilling machine and a cutting (moulding,
grooving, etc.) machine.
The technical advantage obtained by this simplification lies, on the one hand, in
that much saving is effected in labour and material, and on the other hand, in the
fact that the manipulations in the several operations are much simplified.
In the accompanying drawing a universal wood-working machine is shown, of
which:-
Figure 1 is a rear elevation,
Figure 2 a side elevation seen from the left-hand side of Figure 1.
Figure 3 a side elevation seen from the right-hand side of Figure 1.
Figure 4 is sectional elevation illustrating a detail of construction.
Figure 5 is a horizontal section on the line y, y, Figure 3, and
Figure 6 is a sectional elevation showing the new kind of disc-cutter in section.
The improved wood-working machine is so arranged, that whilst each separate
part of the machine is independent of the others, the several parts of the machine
can be used simultaneously.
In the drawing, a indicates the frame of the machine, on which is supported the
tableb and which bears the assembled parts.
The band-saw, consisting of the wheels c, d and the endless band e is arranged
on the extension f of one of the standards or corner-pieces of the frame, and is
of any suitable construction.
The longitudinal drilling machine consists of a movable table g and a movable
tool-carrier or head h.
The table g, which serves for supporting the work, is preferably guided by a
dovetail bed on its bracket or support i, and can be moved in the direction of the
arrows, Figure 4, by means of a lever k pivoted at k¹ to the bed and at to the
table g. This table g, which is also adjustable vertically, bears a device for
holding the work in position, comprising a column 1, provided with a cross-piece
which is adjustable by means of a screw, the said cross piece forming the nut for
a square-threaded clamping screw 12. The tool-carrier or head h, which carries
the drill ¹ moves in guides m, m2, and can be moved to and from the work by
means of a lever n turning about n¹ and connected to the tool-carrier or
head at n2.
The cutting (moulding, grooving, etc.) machine consists of a vertical shaft o,
which turns in a collar-bearing p' and a foot-step p. Both of these bearings are
mounted on a common slide p, which is guided on the frame by means of a dove-
tail groove, Figures 3 and 5. A movable bar q. is provided for the purpose of
setting the slide p iu a vertical direction this bar being pressed against the slide p
LD021

page_text: by means of a screw q¹ and being guided by means of studs or bolts q², qª and
slots.
The shaft o is arranged so as to extend above the table b and bears the cutter-
disc r the construction of which is shown in Figure 6.
The machine is driven from a common shaft v, which bears a belt-pulley w, w01
or w² for each separate part of the machine, from which belt-pulleys the motion is
transmitted by belts to the driving wheels or belt-drums a, ¹, x².
The cutter, disc 'shown in Figure 6 is adjustable for different widths of slot or
groove, and for this purpose it is secured between two preferably circular
wedges s', s, which make up a cylinder with oblique ends.
These wedges engage with two other wedges s³, s which are held together by a
sleeve t provided with a head and nut which are let into the said wedges s³, st.
In the position shown, the width of the groove is equal to the thickness of the
cutter r. If, however, the width of the groove is to be increased, the cutter is
turned through a certain distance, the sleeve meanwhile being held fast, so that the
said cutter comes into an oblique position on the shaft and consequently does not
rotate in one level or plane but oscillates or "wobbles" 'so as to generate a cylinder
in rotating. For fixing or determining the various widths of cut, two a ljacent
wedges s² and for example, are provided with marks which serve as graduations
for determining the amount of relative rotation. The greatest width of cut is
obtained by turning the cutter through 180° and, in the drawing, is equal to the
width u for example. The fastening of the cutter in any position is effected as
shown, for example, in the drawing, by friction, since the nut o' presses together
the three relatively adjustable.parts.
The fastening can, however, be also effected by other means, such, for example,
as by a pin which is passed through corresponding holes in the wedges, in an axial
direction or parallel to the axis, for which purpose it is obvious that the
wedges must be provided with a number of corresponding holes, while
the wedges s', s2 only require one hole, or vice versa.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1. A wood-working machine in which there are mounted on the frame, a band-
saw of known construction, a table adjustable both vertically and horizontally and
provided with a fastening device, and a horizontally adjustable tool-carrier or
head. carrying a drill driven by a belt or rope to form the longitudinal drilling
machine, and a vertical shaft carrying the cutter or cutters and turning in
foot-step and collar bearings both of which are mounted on a common slide-piece
moving on the frame, the several parts of the machine being driven from a
common shaft.
2. A cutter-dise which is adjustable for different widths of cut and is provided
for this purpose with four, preferably circular, wedges of which the two inner ones
hold between them the cutter-disc whilst the two outer ones are connected by a
sleeve, substantially as herein before described.
3. The improved wood-working machine constructed substantially as described
with reference to the accompanying drawing and operating as and for the purposes
above specified.
Dated this 10th day of June 1906
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.