Improvements in Wood Grooving Cutters.
Year: 1893

page_text: Date of Application, 14th Nov., 1893
Complete Specification Left, 14th Aug., 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Wood Grooving Cutters.
We, CHARLES MUDGE of Cherryhinton Road, Cambridge, Wood Cutting
Machinist, and ROBERT RENTON EADON of President Works, in the City of
Sheffield, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the construction of adjustable rotary
grooving saws or cutters, the object being to construct a saw or cutter, that can be
adjusted by the insertion or removal of plates or sections to various dimentions in
its thickness to cut various widths of grooves.
It consists of two outside oblong cutters, resembling sections of a circular saw,
with a centre hole to fit upon a spindle, and one or more pin holes, through which
a stud or bolt may be passed for the purpose of securing in position a number of
intermediate adjusting cutters. We prefer that the two outside plates are arranged
cross wise, and the intermediate cutters may be placed so that their cutting parts
may be in the space between the cutting parts of the outside cutters, but we do
not bind ourselves to any particular position, as this will depend to some extent
upon the number of intermediate cutters used.
The outside cutters we prefer to make of considerable width on their cutting
faces, say for example, an eighth of the circumference of the cutter, thus in a
cutter of twelve inches diameter, we find five inches or thereabouts a satisfactory
size, and we construct the teeth upon this edge for the special purpose of producing
a clean vertical cut down the sides of the groove in the wood, either across or with
the grain thereof.
The intermediate cutters are made enlarged at the central part for the spindle
hole, and also for a pin hole, and are reduced at each end to form a cutting point,
which projects to correspond with the edges of the outside cutters or thereabouts.
They may be of any desired thickness to suit the work, and one or more may be
used as required, and secured at different angles.
Dated the 13th day of November 1893.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Wood Grooving Cutters.
We, CHARLES MUDGE of Cherryhinton Road Cambridge, Wood Cutting
Machinist, and ROBERT RENTON EADON, of President 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 relates to improvements in the construction of adjustable rotary
grooving saws or cutters, the object being to construct a saw or cutter that can be
adjusted in its thickness by the insertion or removal of one or more intermediate
plates or sections, to enable it to be used for cutting various widths of grooves.
The cutter is illustrated in the annexed sheet of drawings, with two intermediate
cutters placed between the outer cutters.

page_text: Fig. 1, is a side view of the cutter.
Fig. 2, edge view of same.
It consists of two outside oblong cutters A', and A2, resembling sections of a
circular saw, having a centre hole B, to fit upon a spindle C, upon which they are
secured by plates and nuts, or by other usual means, they are also provided with
one or more pin-holes D, to correspond with similar holes in the intermediate
plates or cutters, to enable the intermediate cutters to be secured in the desired
position by means of a bolt or stud passed through them.
The two outside plates A', and A³, we prefer to arrange crosswise as shown, and
the two intermediate plates or cutters E, and F, are placed so that their cutting
points may be in a central position between the outside plates, but we do not bind
ourselves to any particular position, as this will depend upon the number of such
cutters.
The outside cutters we prefer to make of considerable width upon their cutting
edges say for example four to five inches for a cutter of twelve inches diameter, and
we construct the teeth upon these outer plates for the special purpose of producing
a clean vertical cut down the sides of the groove in the wood, whether in cutting
across or with the grain.
The intermediate cutters are enlarged in the central part for the spindle and
pin holes, and are reduced towards each end, and terminate in a cutting edge of any
desired form most suitable for the work, and which corresponds in position with
the teeth of the outside plates, or thereabouts.
These cutters may be of various thicknesses so that any desired width of groove
may be obtained.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim, is :-
1. An adjustable grooving cutter or saw, constructed, substantially as herein-
before described, and with reference to the annexed drawings.
2. An adjustable grooving cutter or saw, consisting of two outside plates A¹,
and A³, serrated on their outer edges, and any number of intermediate cutters such
as E, and F, to regulate the thickness of the cutter, substantially as hereinbefore
described, and shown in the annexed sheet of drawings.
Dated the 13th day of August 1894.`
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.