Improvements in or connected with Drawing Knives.
Year: 1890

page_text: Date of Application, 21st Nov., 1890
Complete Specification Left, 20th Aug., 1891-Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Drawing Knives.
I, JOHN SOLOMON CANTELO, of Boston, in the County of Suffolk, Massa-
chusetts, United States of America, Carpenter, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in drawing knives and has for its object
to enable the handles to be readily adjusted in any required position in relation
to the knife blade.
According to this invention the shanks or ends of the knife blade are each
provided with three or more locking parts and the said ends are each connected
to a bifurcated stud by a hinge pin which passes through the bifurcated end
of the stud and the shank of the knife blade. The part of the stud nearest to
the blade shank forms a journal for a metal sleeve on the near end of the
handle and the outer part of the stud is provided with a screw thread to receive
a thumb screw nut.
The handle is preferably of wood (and provided with a groove to close over
the blade) shipped onto a metal shank or bifurcated shank. On the end of this
shank and at right angles thereto is the before mentioned sleeve which takes
into the journal of the hinged stud and has an all round movement thereon.
The edge of the sleeve is provided with grooves or slots of size to receive and
ship onto the locking parts of the blade shank. The thumb screw nut being
screwed up tight secures the handle in position. A plain locking washer is
preferably placed between the sleeve and the screw nut to keep the nut from
working loose.
The handles can thus be placed and locked at a right angle with the edge,
or the back of the blade, or in line therewith, or can be folded on to the edge
of the blade and receive it like the handle of a penknife does its blade.
To enable the handle to be placed and secured at any angle to the horizontal
or the vertical plane of the knife blade, I provide a loose metal sleeve on the
stud to lock with the shank, and I form the outer edge of this sleeve with
teeth or serrations and I form the inner edge of the handle sleeve with like
teeth or serrations that will gear or lock with the teeth ΟΙ serrations
on the loose sleeve in whatever position the handle may be. I thus obtain an
all round vertical locking movement or horizontal locking movement according
to the position of the hinged stud.
By my invention, a universal adjustment and locking of the handles and the
knife blade can be obtained and the drawing knife is thus adaptable for all
classes of work for which such tools are used.
Dated this 20th day of November 1890.
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents..
COMPLETE SPECIFICATION.
Improvements in or connected with Drawing Knives.
I, JOHN SOLOMON CANTELO, of Boston, in the County of Suffolk, Massa-
chusetts, United States of America, Carpenter, 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 drawing knives, and has for its object

page_text: i
to enable the handle to be readily adjusted in any required position in relation
to the knife blade.
According to this invention the shanks or ends of the knife blade are each
provided with three or more locking parts and the said ends are each connected
to a bifurcated stud by a hinge pin which passes through the bifurcated end of
the stud and the shank of the knife blade. The part of the stud nearest to the
.blade shank forms a journal for a metal sleeve on the near end of the handle
and the outer part of the stud is provided with a screw thread to receive a
thumb screw nut.
The handle is preferably of wood (and provided with a groove to close over
the blade) shipped into a metal shank or bifurcated shank. On the end of this
shank and at right angles thereto is the before mentioned sleeve which takes
into the journal of the hinged stud and has an all round movement thereon.
The edge of the sleeve is provided with grooves or slots of size to receive and
ship onto the locking parts of the blade shank. The thumb screw nut being
screwed up tight secures the handle in position. A plain locking washer is
preferably placed between the sleeve and the screw nut to keep the nut from
working loose.
The handles can thus be placed and locked at a right angle with the edge, or the
back of the blade, or in line therewith, or can be folded onto the edge of the blade
and receive it like the handle of a penknife does its blade.
To enable the handle to be placed and secured at any angle to the horizontal or
the vertical plane of the knife blade, I provide a loose metal sleeve on the stud to
lock with the shank, and I form the outer edge of this sleeve with teeth or serra-
tions and I form the inner edge of the handle sleeve with like teeth or serrations
that will gear or lock with the teeth or serrations on the loose sleeve in whatever
position the handle may be. I thus obtain an all round vertical locking movement or
horizontal locking movement according to the position of the hinged stud.
In the annexed drawings,
Figure 1 is a side elevation, partly in section, of a drawing-knife with my
improvements applied thereto.
Figure 2 is a plan of the knife shewn in Figure 1, partly in section and
broken off.
Figure 2 is a section at X. X. Figure 1.
Figure 3 is a side elevation of a drawing knife, provided with my improvements
in a slightly modified form.
Figure 4 is a plan of the knife shewn at Figure 3, partly in section and
broken off.
Figure 5 is a plan of the locking washer.
According to this invention I so arrange the handles of the knife that they will
operate in different planes, and can thereby be moved into any desired position in
reference to the blade.
In the drawings, a designates the blade, and b b the shanks thereof. The ends of
the shanks are provided with locking parts or edges. The drawings shew three
such edges ccc, but it will be obvious that more may be provided, d are studs having
bifurcated ends by which they are connected to the shanks by hinge pins e, so that
the studs d have an all round movement in the same plane as the knife blade. The
studs d are made with a journal d' and a screwed part d²; fare the handles, the
holding part being preferably of wood carried on a metal shank h, preferably of
bifurcated form passing through the ferrules ff, and having its ends rivetted over
the outer ferrules, the handles being provided with a longitudinal slot f³ to
enable the handles to be folded onto the edge of the blade, as shewn in dotted lines,
Figure 1. The shanks are provided with sleeves which ship onto the journals d
so that the handles have an all round movement thereon in whatever position the
studs may be in relation to the knife blade, as shewn in dotted lines in the drawings.
The sleeves are provided with slots 2 as shewn in Figures 1 and 2 or with
projections as shewn in Figures 3 and 4, said slots h² engage with the locking

page_text: parts ccc on the shanks in the example shewn at Figures 1 and 2, and said
projections ha come between the bifurcated cheeks of the stud d, and bear on the
parts c, c, e, in the example shewn in Figures 3 and 4, in both cases locking the
handles with the knife shanks b b. i designates thumb screw nuts which take on
the screws on the stud d and when screwed up securely lock the handles onto
the shanks of the knife blade, are locking washers which are placed on the
screws (which are flattened to provide the lock) between the nuts i and the
sleeves so as to keep the nuts i from being worked loose by any slight play
the handles may have.
To enable the handles to be locked in any position in the horizontal or vertical
plane of the knife blade a, I form the sleeve in two parts, as shewn in Figures 3
and 4. The meeting edges of these parts are provided with teeth or serrations,
the part locking with the shank, and the handle ƒ and part h³ being, when the
nut is slackened, adjustable to any position or degree on the part *, and when the
mut is again screwed up, securely locked thereto. Thus the handles may be set
in any position in relation to the blade a, for example, they may be set in the
position shewn in full lines in Figure 3, which position is very suitable for bench
work.
By my invention, a universal adjustment and locking of the handles and the
knife blade can be obtained and the drawing knife is thus adaptable for all classes
of work for which such tools are used.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: :-
1. A drawing-knife having handles adapted to be moved or adjusted; substan-
tially as herein described.
2. In a drawing-knife, the combination of the blade a with the two handles ff,
each handle having two reversible joints, substantially as shewn and described.
3. The drawing-knives with movable handles constructed as set forth with
reference to Figures 1 and 2 and Figures 3 and 4 respectively.
Dated this 19th day of August 1891.
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents.