Improvements in Sawing and Cutting Machines.
Year: 1895

page_text: Date of Application, 18th July, 1895
Complete Specification Left, 18th Apr., 1896-Accepted, 23rd May, 1896
PROVISIONAL SPECIFICATION.
Improvements in Sawing and Cutting Machines.
I, DENIS PARRY of 20 Chaucer Road, Herne Hill, in the County of Surrey,
Engineer, do hereby declare the nature of this invention to be as follows :-
This invention relates to machines adapted for sawing or cutting, depending
upon whether the cutting surfaces have knife or serrated edges. It is particularly
adapted for cutting dovetail and like sections from wood, and may be used with
advantage in sawing or cutting double tenon pieces, as well as for cutting circular
or other pre-determined shapes.
Describing the machine as adapted for cutting or sawing a rectangular piece
from a tenon will enable the application of the invention to other forms of cutting
to be clearly understood. Carried in guides is the frame or backing for carrying
the saws, which are practically four in number, the lower ones being inclined so
that the lower teeth make the first cut in the wood, and as the saw descends the
succeeding teeth complete the cut to the desired depth, and as this is reached the
two similarly inclined or face saws which are at right angles to those just described
commence in like manner to cut at right angles to the lines of cutting just com-
pleted, thus removing a complete rectangular piece in the single descent of what
It will be evident
may be called a boxed saw with cutting faces on three sides.
that by inclining the side saws dovetailed grooves may be cut, while if instead of
making a rectangular form, a circular form is given to the saws, round box-lids or
openings may be made.
For operating the saw or cutter frame by hand it is preferred to use a bell-crank
lever, pivoted to the top of the cutting frame, one end of the bell-crank terminating
in a handle, the other carrying rollers capable of travelling in a frame or guide
at right angles to the line of travel of the saw or cutting frame. Thus as the
friction of the cutting increases and greater power is required, such power is secured
by the increased leverage.
The apparatus may be used for cutting not only wood but cardboard and other
materials.
נ..
101
C T.1 1005
COMPLETE SPECIFICATION.
Improvements in Sawing and Cutting Machines.
I, DENIS PARRY of 20 Chaucer Road, Herne Hill, in the County of Surrey,
Engineer, 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 machines adapted for sawing or cutting, depending
upon whether the cutting surfaces have knife or serrated edges. It is particularly
adapted for cutting dovetail and like sections from wood, and may be used with

page_text: advantage in sawing or cutting double tenon pieces, as well as for cutting circular
or other predetermined shapes.
Describing the machine as adapted for cutting or sawing a rectangular piece
from a tenon will enable the application of the invention to other forms of cutting
to be clearly understood. A machine for this purpose is illustrated in the accom-
panying drawing in which Fig. 1, is a side elevation, Fig. 2, a front elevation, and
Fig. 3, a plan view, while Figs. 4 and 5 indicate a tenon before and after being
cut by such a machine. Carried in guides a is the frame or backing 6 for carrying
the saws cd which are here shown as being practically four in number, the lower
ones c being inclined so that the lower teeth make the first cut in the wood, and
as the saw descends the succeeding teeth complete the cut to the desired depth,
and as this is reached the two similarly inclined or face saws d which are shown
at right angles to c commence in like manner to cut at right angles to the lines of
cutting just completed, thus removing a complete rectangular piece (as shown in
Fig. 5) in the single descent of what may be called a boxed saw with cutting faces
on three sides. It will be evident that by inclining the side saws e dovetailed
grooves may be cut, while if instead of making a rectangular form, a circular
form is given to the saws, round box-lids or openings may be made. For straight
sawing or cutting a single inclined saw or cutter would be used instead of the
double face saws d, and where a single stroke is insufficient to saw or cut
the required length the frame would be raised and the work fed forward for the
second cut.
For operating the saw or cutter frame by hand it is preferred to use a bell-crank
lever e, pivoted to the top of the cutting frame, one end of the bell-crank
terminating in a handle, the other carrying rollers g capable of travelling in a
frame or guide at about right angles to the line of travel of the saw or cutting
frame. Thus as the friction of the cutting increases and greater power is required,
such power is secured by the increased leverage due to the rollers g having
travelled down guides h until at the end of the stroke the lever is practically in
the position indicated by dotted lines in Fig. 1. It may at times be found desirable
to substitute gear wheels, or a rack and pinion, or other mechanism for the lever,
or to actuate such lever by mechanical means.
The apparatus may be used for cutting not only wood but cardboard and other
materials.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,―
1. In sawing or cutting machines and in combination, a movable frame, saws or
cutters carried thereby and provided with inclined cutting edges and means for
operating said frame, substantially as set forth.
2. In sawing or cutting machines and in combination, a movable frame, sawing
or cutting edges carried thereby, and a lever pivoted thereto for actuating said
frame, said lever being arranged and operating in substantially the manner
described.
3. The improved apparatus for sawing or cutting, substantially as hereinbefore
described.
Dated the 17th day of April 1806
PHILIP M. JUSTICE,
55 & 56 Chancery Lane, London, Chartered Patent Agent,
For the Applicant.