Improvements in or relating to Moulding or Planing Machines for Wood or other materials.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Moulding or Planing Machines for
Wood or other materials.
'
I, CHARLES LOUIS GOEHRING, of 170 Sandusky Street Alleghany, County of
Alleghany, State of Pennsylvania, United States of America, Doctor of Medicine
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 relates to improvements in that class of wood working machines
wherein an oscillatory reciprocating cutter-head is employed and caused to traverse
the face of the material as the latter is advanced or fed by suitable mechanism, to
form a series of curves or other figures, and it consists in the novel and improved
mechanism for feeding or controlling the position of the material while being acted
upon by the oscillatory reciprocating cutter.
In the accompanying drawings;
Figure 1 is a side elevation partly in section, of a machine with the present
improvements applied thereto.
Figure 2 is a plan of the underside of the feeding devices.
Similar letters and numbers of reference indicate similar parts throughout the
drawings.
The cutting mechanism is of the type or variety in which a rotating cutter A
is supported upon an oscillating frame or a stem B attached to a reciprocating
slide or carriage C.
The arbor of cutter A is preferably supported in a head-stock A' having three
bearings a a' at the two last of which are removable to admit of free access being
had to the cutters and cutter head and to the belt pulley a³.
The oscillating motions of the frame or stem B are produced by a cam or
eccentric on cam shaft D operating through rod E toothed segment F and a gear
wheel (not shown) on shaft G, the latter provided with a gear wheel H engaging a
toothed collar I on said stem.
The reciprocations of the slide or carriage C are effected through a cam or
eccentric on shaft D, a rod engaging bell crank lever J and a slide K interposed
between said lever and an adjustable screw K' on the slide or carriage. A spring M
operates through an arm m on the slide K to retract the slide C.
Machines of this kind as heretofore generally constructed have been provided
with feeding mechanism for advancing the material in a straight line beneath the
cutter, and the result has been that the successive figures produced by the action
of the oscillatory reciprocating cutter were all formed in the same plane or on a
common base line. Thus if the actuating devices were set to produce a given
figure, each succeeding figure in the series would be in the same plane as compared
with the other figures.
One object of the present invention is to enlarge the capacity of the machine so
that the successive figures may be formed in curved or spiral lines and this I
accomplish by shifting the position of the material that is to say changing or
varying the line of feed motion while the oscillatory reciprocating cutter is in
action and operating to produce the given figures.
With this end in view the bed plate 1, upon which the material is placed and
securely held, is pivotally supported upon a movable carriage 2, the latter supported
in ways 3 so as to be movable towards and from the cutter in a plane substantially
parallel with the plane of reciprocation of the cutter head. The pivot of the bed
plate extends below the bed-plate and carries a gear wheel 4 which is engaged by
FD

page_text: a gear wheel 5 capable of moving longitudinally on shaft 6 but connected to the
latter by a spline to prevent it from rotating independently of the shaft 6.
Shaft. 6 is driven from one of the shafts of the cutting mechanism through
a suitable train of gearing 7 and it carries a pinion 8 engaging an idler 9 in gear
with pinion 10 on screw shaft 11 the latter engaging the carriage 2.
By removing the idler 9 or otherwise disconnecting the shaft 6 from the screw
shaft 11 or other devices for effecting the rectilinear motion of the carriage, the
bed-plate or table will be rotated upon its axis carrying the material in a'curved or
circular path beneath the oscillatory reciprocating cutter, so that the successive
figures will be formed on a curved base line, and as the movements of the table are
controlled by the same driving mechanism which controls the movements of the
cutter, the several successive figures will all be of the same form and dimensions.
The figures may be formed on concentric circular lines or arcs by shifting the
carriage in or out after each line of figures has been formed, or the lines of figures
may be formed on different curves, one within another by shifting the position of
the carriage and of the material upon the bed plate.
In this way several different designs or series of figures may be formed on the
samne board, or the sections of a composite figure may be formed on separate
boards.
By connecting the screw shaft 11 to the shaft 6 a compound rotary and
rectilinear motion will be imparted to the bed-plate and the material lying thereon,
in which case the series of figures produced by the oscillatory cutter will be formed
spiral.
From the foregoing description it will be understood that the axis of rotation
of the cutter head is transverse to its axis of oscillation and in a plane substantially
parallel with the plane of rotation of the table 1 the axis of which is parallel with,
but to one side of, the axis of oscillation of the cutter head.
In illustrating my invention I have shown it in one of its simplest forms of
embodiment but do not wish to be understood as restricting myself thereto, as many
other arrangements of driving mechanism may be devised for controlling and
effecting the movements of the table or work support relatively to the oscillatory
reciprocating cutter, the gist of my present invention residing in the employment
of automatic devices for shifting the material operated upon by the oscillatory
reciprocating cutter, whereby without interfering with the action of the cutter in
producing a predetermined pattern or design, the line upon which successive figures
are formed is varied from a right line.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is;-
1. In a machine such as described the combination with an oscillatory-recipro-
cating cutter head whose arbor or axis of rotation is transverse to its axis of
oscillation and in a plane substantially parallel with the plane of rotation of a work
support or table such as 1 pivotally supported to turn about an axis substantially
parallel with the axis of oscillation of the cutter head said table being mounted
upon a base or support guided to travel in a plane substantially parallel with the
plane of reciprocation of the cutter-head substantially as described and illustrated
in the accompanying drawings.
2. In a machine such as described the combination with an oscillatory-recipro-
cating cutter-head of a work support or table such as 1 pivotally supported to turn
about an axis parallel with the axis of oscillation of the cutter head but to one side
thereof a support for said table guided to move in a plane substantially parallel
with the plane of reciprocation of the cutter head and actuating devices or driving
mechanisin common to the cutter-head and table for controlling the oscillatory and
reciprocating motions of the cutter head and rotary and rectilinear motions of the
table and preserving the proper relations the one to the other substantially as
described and illustrated in the accompanying drawings.

page_text: 3. In a machine such as described the combination with an oscillatory recipro-
cating cutter such as A of a table or work support such as 1 extending beneath the
cutter and pivotally supported upon a laterally movable carriage such as 2 with
devices for automatically rotating the table and moving the carriage substantially
as described and illustrated in the accompanying drawings.
4. In a machine such as described the combination with an oscillatory recipro-
cating cutter such as A of a travelling carriage such as 2 a table such as 1 pivotally
supported upon said carriage screw shaft such as 11 engaging said carriage driving
shaft and gearing between the driving shaft 6 and table 1 and between the driving
shaft 6 and screw shaft 11 for simultaneously rotating the table and shifting the
carriage substantially as described and illustrated in the accompanying drawings.
Dated this 9th day of August 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.