IMPROVE- MENTS IN VENEER-CUTTING MACHINES
Year: 1879

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel, Civil Engineer and Patent
Agent, in the City of Hamburg, Germany, for the Invention of "IMPROVE-
MENTS IN VENEER-CUTTING MACHINES." A communication from Wilhelm
Ferdinand Zipperling, of Hamburg, in the German Empire.
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 3rd October 1879.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. "IMPROVEMENTS IN VENEER-CUTTING MACHINES."
A communication from Wilhelm Ferdinand Zipperling, of Hamburg, in the German
Empire.
This Invention relates to horizontal working veneer-cutting machines, and has
for object to make this machine applicable for the manufacture of veneers of greater
thickness than could hitherto be produced on the same. The cutting knife of this
improved machine when at work has a double motion, that is to say, it receives
besides the horizontal forward and backward mntion a reciprocating side motion.
Instead of one support only to which the knife formerly was fastened this machine
has two supports, a main support with forward and backward motion, and an
intermediate support with reciprocating side motion. The knife is fastened to the
intermediate support, and the latter slides in guides on the main support in side-
way direction to the forward and backward motion of the knife. This side motion
is imparted to the intermediate support by racks, and spur wheels, and conical gear,
or by a lever transmission, either of which mechanism receives motion from the
main support whilst the machine is at work.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Friedrich Hermann Felix Engel in the Great Seal Patent Office
on the 3rd April 1880.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent, in the
City of Hamburg, Germany. "IMPROVEMENTS IN VENEER-CUTTING MACHINES."
A communication from Wilhelm Ferdinand Zipperling, of Hamburg, in the German
Empire.
This Invention relates to horizontal working veneer-cutting machines, and has
for its object to make this machine applicable for the manufacture of veneers of

page_text: greater thickness than could hitherto be produced on the same. The cutting knife
of this improved machine when at work has a double motion, that is to say,
it receives besides the horizontal forward and backward motion a reciprocating side
motion. Instead of one support only to which the knife formerly was fastened
this machine has two supports, a main support with forward and backward motion,
and an intermediate support with reciprocating side motion. The knife is fastened
to the intermediate support, and the latter slides in guides on the main support in
sideway direction to the forward and backward motion of the knife. This side
motion is imparted to the intermediate support by racks, and spur wheels, and
conical gear, or by a lever transmission, either of which mechanism receives motion
from the main support whilst the machine is at work.
In the accompanying Sheet of Drawings this Invention is represented applied to
a borizontal veneer cutting machine, the general arrangement of which is of known
construction. Figure 1 is a side elevation and Figure 2 a ground plan of the
machine. A is the table (or bed), to which the blocks of wood which have to be
cut are fastened; B is the cutting knife; and C, the main support, which latter is
moved to and fro over the bed A and wood blocks by means of rack and pinion.
With horizontal veneer-cutting machines the knife B was formerly generally
fastened to the support C directly, whilst with this improved machine knife B is
fastened to an intermediate support D, which is guided on the main support C, and
to which a reciprocating side motion is imparted by pinion H gearing in a rack E
of support D. The pinion H is supported by bearings fastened to an arm (at right
angles) of the main support C, and is driven by conical wheel transmission from a
shaft L, which latter receives revolving motion from a spur wheel P fastened to
same and gearing in a rack R, which latter is attached to the frame of the machine.
Whilst support C is moved forward or backward over table A wheel P receives
motion from rack R and produces by transmission of the before described conical
gearing the side motion of the intermediate support D and cutting knife B.
According to and at same time with the progress of the direct acting as well as
return motion of knife B the side motion of the latter in one and other direction is
ensured, and this double acting motion imparted to knife B produces a much better
result of the machine than was formerly the case with the forward acting motion
only, and veneers of greater thickness than heretofore can be produced by this
improved machine.
Having now described the nature and particulars of the said Invention I
claim,―
The construction and arrangement of apparatus for imparting to the cutting
knife of horizontal veneer-cutting machines, besides the forward motion, a side
motion, for the purpose and in the manner substantially as herein described and
explained in reference to and as shown by the accompanying Drawings.
In witness whereof, I, the said Friedrich Hermann Felix Engel, have here-
unto set my hand and seal, this Thirtieth day of March, in the year of our
Lord One thousand eight hundred and eighty.
F. H. F. ENGEL (L.S.)