An Improved Wood Planing and Design Cutting Machine.
Year: 1887

page_text: An Improved Wood Planing and Design Cutting Machine.
I, THOMAS RICHARD SHILLITO of 89 Chancery Lane in the County of Middlesex,
Engineer do hereby declare the nature of said invention for "AN IMPROVED WOOD
PLANING AND DESIGN CUTTING MACHINE," and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
The object of this invention is to provide a wood planing and design cutting machine
of great simplicity and precision of working and the invention consists in an arrange-
ment of horizontal travelling table for the carriage underneath and past the cutter or
cutters of the wood to be operated upon, which in earlier machines of the kind has
been done in a vertical direction. It also consists in an arrangement for adjusting the
wood in the machine. By these means considerably larger pieces of wood or square
plaques may be operated on than has hitherto been practicable without a complicated
machine taking up a large amount of space.
Referring to the accompanying drawing:-Figs. 1, 2, and 3 are respectively an end
view, a part sectional side elevation and a plan of a wood planing and design cutting
machine in accordance with this invention. Figs. 4, 5 and 6 refer to details.
The machine is driven from the fixed belt pulley A by which the pullies B and C
are rotated. When the straight helt bor the crossed belt c drives the pulley C it
follows that the endless screw D, worm wheels D¹ and traversing screw E cause a
forward and backward motion of the slide table F which serves for planing or cutting
It is constructed as
patterns in which the path of the cutters in the wood is crossed.
follows: To the slide table F which slides to and fro over the bed is firmly fixed or
cast in one piece therewith the circular disc H carrying-so as to be capable of turning
thereon-the plate G in such manner that its travel is concentric with H and may
be set in any desired position on this latter by means of two screws mounted by
their dovetail heads in a correspondingly shaped groove of the plate G. The

page_text: serows engage in the disc H and upon slacking them by means of the wing nuts f¹
the square plate G may he turned round on the circular disc. In this way the
most varying angles of the cutting path, and therewith by altering the shape of the
cutters, an endless number of patterns or designs may be obtained. To enable the
work to be readily set at the desired angle a scale is provided on the disc H and on
the plate G a pointer, so that after adjusting the pointer to the scale the plate G may
at any time be brought to the desired position.
The cutters K are driven direct from the driving shaft through the wood pulley Tat
a quick speed and may be adjusted both vertically and horizontally. The vertical
adjustment by which the precise depths of the cuts may be regulated is effected
through the bevel wheels g, g' and screw spindles h, h, whilst the displacement
horizontally is through hand lever i and screw spindle k. Instead of driving the
cutters from a wood pulley T as shewn in Figs. 2 and on which the belt may move
sidewise upon the horizontal displacement of the cutters K, the means shewn in Figs. 5
and 6 may be adopted, a being the driving shaft in which a key or feather 7 is fitted
on the whole of its length, T' the driving pulley provided with a corresponding key-
way along which the pulley is readily movable on the shaft whilst in rotation, further,
to the slide on which the cutter spindle is mounted are fixed two iron bars m
reaching to the pulley T¹ to the boss of which their two ends are bent but not so much
as to bring them into contact with the driving shaft a and feather therein. On each
of these ends a friction roller is mounted for diminishing the friction between the boss
of the pulley T and the ends of the bars m. When the cutters are moved right or left
the same movement will also be given through the hars m to the pulley Talong the
driving shaft a whereby the belt is kept working straight and prevented from springing
off the pulley. To prevent undue vibration of the bars m they are stayed together by
a sheet metal top which also serves to protect the belt running between them. This
arrangement is to be preferred to that of the wood pulley as the shaft running empty
at a high speed can he brought much sooner into work with a narrow pulley than with
a long heavy one, the running also being easier and quieter.
Having now particularly described and ascertained the nature of said invention and
in what manner the same is to be performed, I declare that what I claim is:
1. The arrangement of a horizontal slide F travelling underneath the cutter head
for receiving the wood or square plaques to be operated upon in combination with a
dise or plate, provided with a scale, attached thereto and on which is mounted so as to
turn thereon a plate G capable of adjustment to any desired angle with reference to
the cutter spindle by means of two screws, substantially as described and shewn for the
purpose specified.
2. The combination of the slide F with a horizontally and vertically adjustable cutter
head driven direct from a shaft or pulley substantially as described and shewn for the
purpose specified.
3. The arrangement of sliding driving pulley for the cutter head in combination
with the bars m fastened to the cutter slide in the manner that a sidewise displacement
of the cutter slide effects a corresponding displacement of the driving pulley
substantially as described and shewn for the purpose specified.
Dated this 28th day of June 1887