Improved Milling or Planing Apparatus for Re-sharpening the Roller Bars of Pulping Engines, and for other purposes.
Year: 1893

page_text: Date of Application, 8th Nov., 1893
31
Complete Specification, Left, 8th Sept., 1894 Accepted, 27th Oct., 1894
PROVISIONAL. SPECIFICATION.
Improved Milling or Planing Apparatus for Re-sharpening the
Roller Bars of Pulping Engines, and for other purposes.
: 1
I, CHARLES CROOKES, of Argus Works, in the City of Sheffield,, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention is for improvements in apparatus for the re-sharpening of edges
of roller bars for paper machines but which may also be used for milling or planeing
other objects and surfaces, and wheel cutting.
The chief object is to enable the edges of the blade of roller bars to be
re-sharpened without removing them from the roller, and to accomplish that 'object
in a rapid and satisfactory manner.
The apparatus may be adapted either to be secured to the frame work of the
paper machine or preferably be made in a complete form to stand in a workshop,
and for other purposes than that for which it is specially designed, it may be
provided with a table upon which the object can be bolted or otherwise held for
operation.
It consists of a horizontal elide, resembling. the cross slide of an ordinary metal
planer, carrying a travelling head fitted with a vertical spindle, upon the lower end
of which is fixed a circular cutter, which for the first named purpose is made to
resemble a number (say for example twenty) of planing tools arranged in a circle
and revolving horizontally.
The spindle is provided with a worm wheel, and is driven by a worm upon a
longitudinal shaft, which is in turn driven through a pair of toothed wheels one
of which is upon a separate shaft with driving pulleys.
The sliding head is traversed from end to end by means of a screw, passing
through a nut attached to the sliding head; a toothed wheel upon the end of the
screw is geared into another wheel upon a short shaft to which motion is trans-
mitted from the first driving shaft by means of a worm and wheel and a pair of
bevel wheels, one of which is upon the end of the first driving shaft.
Means are provided by which, the screw.can be disengaged from the "power."
and can be worked by hand.
The roller bar to be sharpened is intended to be placed in a pair of supports,
and rest upon its axle in line with the apparatus, and so that the edges of the blades
will come in contact with the circular cutter.
.
The machine is then set in motion, and the cutter will operate upon the bevel of
the blade traversing it from end to end.
The apparatus may be made of any desired length.

page_text: Improved Milling or Planing Apparatus for Re-sharpening the
Roller Bars of Pulping Engines, and for other purposes.
I, CHARLES CROOKES of Argus Works, in the City of Sheffield 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 :-
This invention is for improvements in apparatus for the re-sharpening of the
edges of the roller-bars of paper machines, but which may also be applied for milling
and wheel cutting and like purposes.
I have illustrated the apparatus as made for the first described purpose, and as
constructed in its most complete form; the object of this form of machine is to
enable the edges of the bars to be re-bevelled or sharpened, without removing the
said bars from the body of the roller to which they are fixed, and to accomplish
the work in a rapid and satisfactory manner.
Fig. 1, is a front elevation of the machine.
Fig. 2, side elevation of same.
The chief part of the apparatus or machine is the upper part consisting of the
slide A, the travelling head B, for carrying the spindle C, and cutter D, and the
driving mechanism.
The slide A, resembles somewhat the cross slide of an ordinary planer, and it
carries upon its face a traversing head B, fitted with a vertically held spindle C,
which carries the cutters or milling tools D, upon its lower end.
The spindle is fitted with a worm wheel E, which gears into a worm indicated
in the drawing which slides upon and is turned by a grooved shaft F, driven by a
pulley G, or other motive power applied to it.
Upon the end of this shaft is a toothed wheel Frotating a pair of bevel wheels F,
and the worm H, and worm wheel H', driving a traversing screw I which moves
the head B, and causes the cutter to travel across the surface upon which it is
operating, at a suitable speed. J, is a rest which is used when the machine is
operating upon the rolier-bars K, of a rag machine, only one bar being shown in
the drawing; L, is a roller removed from a machine (part being broken away)
and placed upon standards M, upon which it can be revolved, and the rest J can
be adjusted for the underside of the roller-bar to rest upon, to resist the pressure
of the cutter.
The slide A, can be readily adjusted in height by means of the screws N, and
the 'roller can also be moved into position by the adjusting screws O, and O¹.
When used for other purposes the standards M, can be removed and a table
suitably constructed for holding work, can be placed upon the base P.
When the machine is desired to be used as a portable machine to be attached to
the "shell" of a "rag engine," the whole of the base and the standards are dispensed
with and the slide is constructed to be bolted down, being provided with slots for
that purpose.
The traversing screw can be disengaged from the driving power by means of a
clutch, and the traverse of the cutter be made by hand.
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 machine for sharpening the roller bars of rag engines without removing
them from the roller, and for other machining work, constructed substantially as
hereinbefore described and illustrated in thn 1-2

page_text: 2. A machine for sharpening the roller bars of rag engines without removing
the roller from the rag engine, consisting of a slide A, travelling head B, rest J,
spindle C, and traversing screw I, and grooved shaft F, all in combination, and
arranged either as a complete independent machine as illustrated, or constructed
so as to be attached to, or fixed upon, the shell or frame of a rag engine as
hereinbefore described.
Deted the 0th day of August 1894.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.