An Improved Wood Cutting, Shaping, or Reproducing Machine.
Year: 1891

page_text: Date of Application, 24th Dec., 1891-Accepted, 2nd July, 1892
COMPLETE SPECIFICATION.
An Improved Wood Cutting, Shaping, or Reproducing Machine.
I, OTTO LADEMANN, of 30, Poststrasse, Berlin, in the German Empire, Furniture
Manufacturer, 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:-
My invention relates to a wood shaping, cutting or reproducing machine which
differs from such machines as hitherto constructed in so far as that while the latter
have their cutting tools carried by suitable supports and their tracer moved against
a firmly fixed work block and pattern, the tracer according to my invention is
fixed and the tools are arranged to turn upon their own axes only, while the
pattern, as well as the piece being worked, are fed to the tools by the aid of a
table upon which they are fixed. The table for this purpose is capable of parallel
motions in all directions, being pivotally supported by means of suitable bearings
and two weighted parallel arms adapted to oscillate in vertical planes upon a shaft
supported by a carriage movable in a horizontal direction the said arms being also
capable of being turned horizontally upon pivots.
The great advantage of this machine is that a very rapid rotary motion can be
imparted to the cutting tool with a comparatively small expenditure of power and
that in consequence of the relative fixity of the cutting tool and of its slight
mobility much more accurate work can be produced than heretofore.
Furthermore the small mobility of the device carrying the cutting tool allows
of the construction of the machine being simplified while increasing its efficiency
and durability so as to reduce the repairs to a minimum.
The new cutting, shaping or reproducing machine is illustrated in the accom-
panying drawings, in which:-
Figure 1 is a front view of the same.
Figure 2 is a side view partly in section on line a
Figure 1.
Figure 3 is a view of a reproducing machine when the working table is moved
laterally.
Figure 4 is a section of the reproducing machine when the work table is moved
laterally.
Figure 5 is a front view on an enlarged scale of the pin n connecting the shaft m
with the arm o.
Figure 6 is a side view of Figure 5.
Figure 7 shews on an enlarged scale the articulated connection of the bearing
with the weighted arm o of the machine.
Figure 8 is a side view of the upper part of a weighted arm with its pivot and
the underside of a bearing removed from the pivot.
The tracer is fixed in the frame of the machine in such a manner that it cannot
be moved laterally; by the side thereof the spindles c are inserted through the
frame and are provided with suitable adjusting devices in which the working
tools e, e rest. Upon the spindles are keyed the pulleys whereby rotary
movement is imparted to the tools e.
The carriage k of the machine moves upon the rails; and the axis m is carried
by the lateral part of its frame.
The axis m carries the pins n upon which turn the weighted arms o; these arms
being movably connected with the bearings p of the axis q of the table r.
2"
Weights suspended to the table » have for their object to maintain the same in
such a position that its upper surface may form a horizontal plane.
The arms o are loaded with weights s in order to establish the equilibrium of the
table r.

page_text: The table is provided with devices whereby the model and the worked pieces
are held in position; these devices are not shewn in the drawings.
A. forward and backward motion can be imparted by means of the wheels
rolling upon the rails to the table which carries the worked pieces t and the
pattern. The working table receives a vertical motion from the weighted
arms o the axis m turning on its bearings 7. The lateral motion of the working
table and of the pieces being worked results from the weighted arms o being placed
upon the pins of the axis m and from the movable connection of the bearings p
upon the weighted arms o.
The table is moved by hand.
The mode of operation of the machine is such that after the spindles c and their
tools e are set in rotation the table carrying the pieces t to be worked and the
pattern is fed to the tools the said pieces being then cut correspondingly to the
contacts of the tracer with the model or pattern &¹.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is
1. A wood cutting, shaping or reproducing machine having a stationary tracer,
revolving cutting tools and a table for carrying the work capable of parallel motions
in all directions, the table for this purpose being pivotally supported by means of
bearings such as p and two weighted parallel arms adapted to oscillate in vertical
planes upon a shaft supported by a carriage movable in a horizontal direction the
said arms being also adapted to be turned in a lateral direction, substantially as
herein before described.
2. The improved wood cutting, shaping or reproducing machine hereinbefore
described and illustrated in the accompanying drawings.
Dated this 24th day of December 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.