THE SUBSTITUTION OF THIN, FLEXIBLE, AND MOVEABLE BLADES OR CUTTERS OF SHEET STEEL IN LIEU OF RIGID BLADES OR CUTTERS IN PLANING MACHINES AND MACHINES CUTTING AND SHAPING WOOD BY MEANS OF ROTATING TOOLS, AND AN ARRANGEMENT WHICH PERMITS THEIR USE ON TOOL HOLDERS OR CUTTER STOCKS WITH CURVED, HELICOIDAL, CONICAL, AND OTHER SURFACES
Year: 1868

page_text: TTERS PATENT to William Edward Gedge, of the Firm of John
Gedge and Son, of No. 11, Wellington Street, Strand, in the
County of Middlesex, Patent Agent, for the Invention of "THE
SUBSTITUTION OF THIN, FLEXIBLE, AND MOVEABLE BLADES OR CUTTERS OF
SHEET STEEL IN LIEU OF RIGID BLADES OR CUTTERS IN PLANING MACHINES
AND MACHINES CUTTING AND SHAPING WOOD BY MEANS OF ROTATING
TOOLS, AND AN ARRANGEMENT WHICH PERMITS THEIR USE ON TOOL HOLDERS
OR CUTTER STOCKS WITH CURVED, HELICOIDAL, CONICAL, AND OTHER
SURFACES."-A communication from abroad by Frédéric Godeau
and Jules Trottier, both of 39, Faubourg St. Martin, Paris, France.
Sealed the 10th July 1868, and dated the 15th January 1868.
PROVISIONAL SPECIFICATION left by the said William Edward Gedge
at the Office of the Commissioners of Patents, with his Petition, on
the 15th January 1868..
I, WILLIAM EDWARD GEDGE, of the Firm of John Gedge and Son,
of No. 11, Wellington Street, Strand, in the County of Middlesex,
Patent Agent, do hereby declare the nature of the said Invention for
"THE SUBSTITUTION OF THIN, FLEXIBLE, AND MOVEABLE BLADES OR CUTTERS
OF SHEET STEEL IN LIEU OF RIGID BLADES OR CUTTERS IN PLANING MACHINES

page_text: AND MACHINES CUTTING AND SHAPING WOOD BY MEANS OF ROTATING TOOLS,
AND AN ARRANGEMENT WHICH PERMITS THEIR USE ON TOOL HOLDERS OR CUTTER
STOCKS WITH CURVED, HELICOIDAL, CONICAL, AND OTHER SURFACES," a com-
munication to me from abroad by Frédéric Godeau and Jules Trottier,
both of 39, Faubourg St. Martin, Paris, France, to be as follows:-
Machines with revolving tools for working wood, whether intended
for making mouldings or for planing, are provided with basiled irons,
straight or curved, flat or askew, but of considerable thickness, in order
to resist the shocks which they have to undergo. These tools are of
steel, or of steeled iron, are very expensive, and their setting or
sharpening is long and difficult, it being necessary to grind off the
entire thickness of the metal.
It may be observed that in performing their functions only the
extremity of the edge of these irons or cutters is in contact with the
wood, that it alone cuts, and is worn in the working, and that therefore
nothing but this extreme edge need be replaced.
To attain the object of this Invention it is proposed to place on the
tool holder or cutter stock pressed against it by a counterplate thin
blades or cutters, the basiled edge of which will only pass a line or two
beyond the extremity of the counterplate, which will consequently
strengthen the blade and prevent its breaking under the shocks which
it may receive. This bladé or cutter may be "removed at will for
resetting when the edge shall have become dull, it also be brought
forward on the tool holder in proportion to its wear, and will always be
pressed between it and the counterplate by screws penetrating into these
two pieces. Grooves are made in the steel blade in order to leave it free
to be advanced when necessary.
may
•
For cutters with curved, helicoidal, conical, or other surfaces the
same blades are still used, their slight thickness permitting their being
set in any suitable way, and to be then held in this shape by means
of the counterplate and of the screws tying it with the tool holder
or stock.
The main characteristic of this Invention is the substitution of a thin
cutting blade, which alone does the work, wears, and is replaced, in lieu
of the thick cutters hitherto used, thereby reducing the cost of.
facture and keeping in repair, and rendering the setting or sharpening
much easier and more rapid than with the ordinary cutters.
manu;

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Gedge in the Great Seal Patent
Office on the 14th July 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM,
EDWARD GEDGE, of the Firm of John Gedge and Son, of No. 11,
Wellington Street, Strand, in the County of Middlesex, Patent Agent,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of January, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said William Edward Gedge, Her special licence
that I, the said William Edward Gedge, my executors, administrators,
and assigns, or such others as I, the said William Edward Gedge, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, usc, exercise,
and vend, within the United Kingdom, of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "THE SUB-
STITUTION OF THIN, FLEXIBLE, AND MOVEABLE BLADES OR CUTTERS OF SHEET
STEEL IN LIEU OF RIGID BLADES OR CUTTERS IN PLANING MACHINES AND
MACHINES CUTTING AND SHAPING WOOD BY MEANS OF ROTATING TOOLS, AND
AN ARRANGEMENT WHICH PERMITS THEIR USE ON TOOL HOLDERS OR CUTTER
STOCKS WITH CURVED, HELICOIDAL, CONICAL,, AND OTHER, SURFACES," a com-
munication to me from abroad by Frédéric Godeau and Jules Trottier,
both of 39, Faubourg. St. Martin, Paris, France, upon the condition
(amongst others) that I, the said William Edward Gedge, my executors
or administrators, by an instrument in writing under my, or their, or
one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
"
NOW KNOW YE, that I, the said William Edward Gedge, do hereby
declare the nature. of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the accompanying

page_text: Sheet of Drawing forming part of this Specification, and to the figures
and letters of reference placed thereon :-
Machines with revolving tools for working wood, whether intended
for making mouldings or for planing, are provided with basiled irons,
straight or curved, flat or askew, but of considerable thickness, in order
to resist the shocks which they have to undergo. These tools are of
steel, or of steeled iron, are very expensive, and their setting or
sharpening is long and difficult, it being necessary to grind off the
entire thickness of the metal.
It may be observed that in performing their functions only the
extremity of the edge of these irons or cutters is in contact with the
wood, that it alone cuts, and is worn in the working, and that nothing
but this extreme edge need be replaced.
To attain the object of this Invention it is proposed to place on the
tool holder or cutter stock pressed against it by a counterplate thin
blades or cutters, the basiled edge of which will only pass a line or two
beyond the extremity of the counterplate, which will consequently
strengthen the blade and prevent its breaking under the shocks which
it may receive. This blade or cutter may be removed at will for
resetting when the edge shall have become dull; it may also be brought
forward on the tool holder in proportion to its wear, and will always be
pressed between it and the counterplate by screws penetrating into
these two pieces. Grooves are made in the steel blade in order to leave
it free to be advanced when necessary.
For cutters with curved, helicoidal, conical, or other surfaces the
same blades are still used, their slight thickness permitting their being
set in any suitable way, and to be then held in this shape by means
of the counterplate and of the screws tying it with the tool holder
or stock

page_text: of the thin blade or cutter A, of the counterplate B, fixed to the tool
holder, and of the upper and pressure plate C.
The tool holder or cutter stock P presents several prepared surfaces,
on which the tools are added in the following manner:-Firstly, the
counterplate B, serving as support, and which is dressed and planed
so that the edges of the cutter A. fit exactly thereto; this plate is fixed
to the tool holder by the screw.b. The thin blade or cutter A of
tempered steel is cut to a basil or bevel edge more or less sharp
according to the work which it is to execute; it is furnished with
notches a (Fig. 4) for the passage of the screws V, finally the pressing
counterplate C, tightened by means of the screws V, regulating screws,
bear against the tool holder, in order that the extremity of the plate C
may be perfectly applied on the edge of the blade A. Notches c are
made in the plate C to expose the thin blade A.
Figs. 7 and 8 represent the application of this method to a rotating
tool holder with triple series of cutters.
0
Figs. 9, 10, and 13, represent the arrangement of the thin cutters
applied on curved surfaces.
Fig. 11 represents in plan the application of this system to revolving
tools with helicoidal blades or cutters.
Fig. 12 indicates in section an arrangement in which the two counter-
plates are fixed together, and may be removed when the cutter requires
sharpening.
To sum up. The basis of this Invention is the substitution of a thin
cutting blade, which alone does the work, wears, and is replaced, in
lieu of the thick cutters hitherto used, thereby reducing the cost of
manufacture and keeping in repair, and rendering the setting or
sharpening much easier and more rapid than in the case of ordinary
cutters.
In witness whereof, I, the said William Edward Gedge, have here-
unto set my hand and seal, this Fourteenth day of July, in the
year of our Lord One thousand eight hundred and sixty-eight.