Improvements in Planing Machines.
Year: 1899

page_text: Date of Application, 20th Dec., 1899-Accepted, 24th Feb., 1900
COMPLETE DIEUITICATION,
Improvements in Planing Machines.
I, HEINRICH OTTO BERGER, Procurist of the Firm of Kirchner and Company,
A.-G., Maschinenbauanstalt, Leipzig-Sellerhausen, in the Empire of Germany,
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 for improvements in planing machines relates to a pressing-
roller motion with interchangeable cutter-holders the exceedingly appropriate
form of which enables the rollers which are adjusted to give an equal pressure,
to be adjusted quickly and uniformly for the particular thickness of the timber
to be worked or the particular pressing roller to be loosened for the purpose of
changing one of the cutter-holders, so that the other rollers remain in opera-
tion and no interruption whatever of the working need occur during the chang-
ing of the cutter-holder.
The form and arrangement of the roller movement will be understood from
the following description with the assistance of the accompanying drawing, in
which,
Fig. 1 is a side view of the apparatus.
Fig. 2 an end view.
Above the interchangeable cutter-holders k in the bed of the machine a frame
is arranged, on the columns s of which the pressing roller bearer t is so held
as to be movable upwards or downwards, the screw-spindles 6 rotated together
by means of spur-wheels, and actuating the roller-bearer t running downwards
from the upper part a of the frame. On one of the spindles is a hand-wheel h
by means of which the spindles are actuated.
The several rollers are movably attached to lugs i on the bearer t by means
of two-arm bearing plates g guided towards the upper side of the pressing-
roller bearer t on the ends of the screw-spindles which are arranged opposite
the spindles and are firmly connected thereto at the free ends by means of
nuts m carried by screw-spindles n furnished with a hand-wheel d and loosely
held by brackets p.
Springs fare coiled on the screw spindles z and can be put under tension
by means of the nuts w.
If the pressing rollers have been adjusted to an uniform pressure and for a
given thickness of timber, by means of the adjusting apparatus d, n, m, z, all
that is necessary for readjusting them for a lesser or greater thickness is a
corresponding turn of the hand-wheel, in order to bring the whole of the rollers
into the suitable position for the thickness of timber to be worked.
On the contrary, if it be necessary to change a blunted or otherwise impaired
cutter, the particular pressing roller can be loosened without difficulty, so that
no pressure or but little pressure bears on the cutter that is to be changed, and
the latter is easily removed and the dummy cutter-holder pushed in, whilst the
pressing rollers above the other holders remain active, the working of the
machine being in no way interfered with whilst the cutter is being exchanged.

page_text: 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
Pressing-roller apparatus in planing machines with interchangeable cutter-
holders, the distinguishing feature of which is that the pair of pressing rollers
adjustable in the known manner by means of the transverse bearer t guided on
the columns s of the frame, are attached to the transverse bearer, and separately
movable by means of adjusting apparatus, for the purpose of enabling any par-
ticular cutter-holder to be easily exchanged.
Dated this 20th day of December 1899.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.