IMPROVEMENTS IN WOOD PLANING MACHINES
Year: 1887

page_text: Date of Application, 6th Apr. 1887
Complete Left, 5th Jan., 1888
Complete Accepted, 10th Feb., 1888
1 THOMAS NIELD ROBINSON of the firm of Thomas Robinson and Son Limited of
the Railway Works Rochdale in the County of Lancaster Machine Maker, do hereby
declare the nature of said Invention for IMPROVEMENTS IN WOOD PLANING MACHINES,
to be as follows:-
My invention is particularly applicable to hand planing machines with a horizontal
cutter block supported between a pair of bearings but it may also be applied to
machines provided with a self acting feed the object of my Improvements being to
readily adapt such planing machines to cut straight curved or circular mouldings
without interfering with the ordinary uses of the machine.
In applying my Invention to a planing machine of the type referred to I fit an
adjustable table in guides on one end of the machine and in the end of the cutter
spindle I bore a hole preferably taper with a screw thread at one end in which may
be fitted any number of small or auxiliary spindles of various sizes to carry cutter
blocks on which moulding cutters are secured or fly cutters may be mounted directly
upon the small spindles.
In some cases the wood to be operated upon is placed below and in others above
the cutter spindle in the former case an adjustable fence is secured to the table and
also the necessary spring rollers or equivalents for steadying the timber while being
operated upon.
There is a hole in the table to permit it to be raised above the small cutter spindle
for cutting mouldings with a fly cutter in such case I fit into the opening a piece of
hard wood which forms a support for the cutter.
When the machine has been set in motion the table is gradually lowered until the
cutter has cut through the filling up piece of wood and projects far enough through it
to cut the desired moulding on the wood to be operated upon a straight or curved
fence being secured to the table.

page_text: COMPLETE SPECIFICATION!
Improvements in Wood Planing Machines.
I THOMAS NIELD ROBINSON of the firm of Thomas Robinson and Son Limited of
the Railway Works Rochdale in the County of Lancaster Machine Maker do hereby
declare the nature of said Invention for IMPROVEMENTS IN WOOD PLANING MACHINES,
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—-
My invention is particularly applicable to band planing machines with a horizontal
cutter block supported between a pair of bearings but it may also be applied to
machines provided with a self acting feed the object of my improvements being to
readily adapt such planing machines to cut straight curved and circular mouldings
without interfering with the ordinary uses of the machine.
In applying my Invention to a planing machine of the type referred to 1 fit an
adjustable table in guides on one end of the machine and I prolong the end of the
cutter spindle and adapt it to carry cutter blocks on which cutters are secured.
In some cases the wood to be operated upon is placed below and in others above
the overhanging cutter in the former case an adjustable fence is secured to the table
and also the necessary spring rollers or equivalents for steadying the timber while
being operated upon. There is a hole or opening in the table to permit it to be raised
above the overhanging cutter when cutting mouldings in such case I fit into the opening
a piece of hard wood which forms a support for the timber.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying Sheet of Drawings reference being had to the
figures and letters marked thereon.
Figure 1 is a side elevation and Fig. 2 a back view of a wood planing machine to
which my improvements are applied and Fig. 3 is a view of part of the machine with
the table shown above instead of below the cutter as in Figs. 1 and 2.
Similar letters refer to similar parts throughout the several views.
a is the frame of the machine 6 the main table in this case made in two parts
divided transversely in the middle the parts being adjustable by means of the screws b¹ ;
c is the spindle or cutter block supported in bearings c¹ on the spindle between the
bearings are mounted and secured ordinary cutters for surface planing. An adjustable
fence d is fitted in grooves d¹ in one of the tables b. The foregoing parts of the
planing machine are of the ordinary construction.
To enable straight curved and circular mouldings to be cut without interfering
with the ordinary uses of the machine I extend one end of the spindle c through its
bearing and mount thereon an auxiliary cutter block.e on which are secured moulding
cutters the timber to be operated upon is supported on a table g which is fitted
in slideways on the frame a and can be raised or lowered as required by a screw g¹
and on the table is an adjustable fence which may be either straight or curved as
required. The spring rollers or equivalents for steadying the timber as it is fed
through the machine are not shown.
5

page_text: In Fig. 3 the table g is shown raised above the moulding cutter f and as there
is a hole or slot in the table y agreeing in position with the cutter f the table can
be raised or lowered by the screw g¹ without necessitating the removal of the cutter f.
propose to fit a piece of hard wood into the slot or hole in the table g the sides
being suitably prepared to hold the filling up piece the table is fed down when the
machine is in motion until the cutters have cut through the filling up piece and
project far enough through to cut and to produce the desired moulding or form on
the wood which is supported by the filling up piece and table while being operated
upon. By supporting the timber on a bed in which the hole is only the size of the
projecting part of the cutters mouldings can be cut in a superior manner.
In place of the auxiliary spindles it is obvious that the main spindle of the cutter
block could be extended and various mouldings produced by changing the cutter
blocks or fly cutters on the projecting or overhanging end of the spindle.
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. The combination with the ordinary surfacing cutters of a wood planing machine,
of over hanging moulding or fly cutters and an adjustable slotted table and filling up
piece substantially as and for the purposes described and as shown.
2. In a wood planing machine the combination with the ordinary surfacing cutters,
of changeable overhanging moulding blocks and cutters or fly cutters, an adjustable
slotted table, fence and holding down apparatus substantially as described and as
illustrated by the Drawings.