IMPROVEMENTS. IN SAWING APPARATUS
Year: 1854

page_text: LETTERS PATENT to Jean Baptiste Bagary, Stockholder, of Paris, in the
Empire of France, and of 16, Castle Street, Holborn (City), London, for
the Invention of IMPROVEMENTS. IN SAWING APPARATUS.
PROVISIONAL SPECIFICATION left by the said Jean Baptiste Bagary
at the Office of the Commissioners of Patents, with his Petition, on the
22nd November 1854.
..
I, JEAN BAPTISTE BAGARY, Stockholder, of Paris, in the Empire of France,
and of 16, Castle Street, Holborn (City), London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN SAWING APPARATUS," to be
as follows, viz. :-
These improvements apply chiefly to sawing. apparatus for disintegrating or
dividing horn, whalebone, bone, or similar substances by hand. The novel
features of this sawing apparatus are, firstly, a piece of metal, or any other
suitable material, for holding down the material to be operated upon; this
piece also acts as a guide for keeping the saw blades at a constant distance.
Secondly, a novel way of suspending the saw frame between friction rollers,
acted upon by screws on one side, and slides acted upon by springs on the
other. The saw blades are mounted in a suitable frame, composed of several
longitudinal beams, to act as railways for the above said friction rollers. The

page_text: abovesaid guide is slit longitudinally, so as to admit the saw blades traversing
it, and allowing the guide piece to be screwed down upon the material, the
latter being put upon a suitable carrier, which may be heated when horn
is cut, for the purpose of softening and straightening it. The saw frame is
forced up against the springs by means of screws, or any other suitable means.
There is also a cylindrical rasp connected with the sawing apparatus, for
roughening out the horn or other material.-The-cutting-edges-of-this-rasp
are arranged or cut out helically on the surface of the rasping cylinder.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Jean Baptiste Bagary in the Great Seal Patent Office
on the 18th May 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JEAN
BAPTISTE BAGARY, Stockholder, of Paris, in the Empire of France, and of
16; Castle Street, Holborn (City), London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of November, in the year of our
Lord One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Jean Baptiste Bagary, Her special licence that I, the said Jean
Baptiste Bagary, my executors, administrators, and assigns, or such others as
İ, the said Jean Baptiste Bagary, 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, use; exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN SAWING APPARATUS," upon the condition (amongst others)
that I, the said Jean Baptiste Bagary, by an instrument in writing under my
hand and seal, 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 Jean Baptiste Bagary, do hereby
declare the nature of the said Invention, and in what manuer the same is
to be performed, to be particularly described and ascertained in and by the
following statement:-
These improvements apply chiefly to sawing apparatus for disintegrating, or

page_text: features of this sawing apparatus are, first, a piece of metal, or any other
suitable material, for holding down the material to be operated upon; this
piece also acts as a guide for keeping the saw blades at a constant distance.
Second, a particular way of suspending the saw frame between friction
rollers, acted upon by screws-on one side, and slides acted upon by springs on
-the-other.-
Having thus briefly set forth the main features of my Invention, I will now
proceed to describe in detail the particulars thereof; and in order that the
same may be fully and clearly understood, I have hereunto annexed a Sheet
of Drawings; in which, Fig. 1 represents a transverse vertical section of the
apparatus through the line X, X, of Fig. 2; Fig. 2 is a horizontal view of
the said apparatus; and Fig. 3, a side view of the same.
Similar letters of reference indicate the same parts in the several Figures.
A, A, is the frame supporting the apparatus; B, B, is the saw frame; and
C, C, are the saw blades; in this case only two blades are represented, but it
is obvious that a greater or any number of them may be used. The material
to be cut is placed upon a suitable carrier D, which may be heated when horn
is-cut, for the purpose of softening and straightening it; this carrier is pro-
vided with a handle, allowing it to be inserted into the apparatus or to be
taken out, as may be desired. The material placed upon the carrier D is
held down by means of a guide piece E, which is slit longitudinally, so as to
admit the saw blades traversing it, and which may be screwed down by means
of the screws F, F. H, H, are slides, provided with friction rollers I, I, and
that are acted upon by the coiled springs G, G. At the lower end of the
screws J, J, are placed the plates K, K, carrying friction rollers 1', 1¹. The
upper and lower rollers are caused to slide, when the saw is in motion, in
suitable grooves, provided in the longitudinal beams L, L, which the saw frame
is made up of. It is not necessary to act at the same time upon both the
screws J, J; the same movement may be easily imparted to each of them
through the several wheels M, M, by acting only 'upon one of the screws.
The end bars B, B, of the saw frame, Fig. 2, are provided at each end with
hilts or handles, allowing the saw to be worked by hand, or else it may be
worked by any other motive power.
The arrangement above described may also be reversed, i. c., the saw may
be made to remain stationary, and fixed on the piece D, which in the above
arrangement carries the material to be sawed, and the material may be held
between suitable holding plates on the moving frame B, B, so as to have that
part sawed off which projects beyond the plates. The parts I & K may in

page_text: that case be suspended by means of a counterpoise, and ropes passing over
pulleys, so as to allow the holding frame to be lowered or raised more easily
during the sawing, and for renewing the material.
O'is a cylindrical rasp, that may prove very useful when connected with the
sawing apparatus, for roughing out the horn, or any other similar materials.
The cutting edges of this rasp are arranged or cut out helically on the surface
of the rasping cylinder, and the axle bearings are supported by springs, which
allow them to slide freely up and down, in order that the axle may be raised
or lowered, as may be required. This rasping apparatus.may be set in motion
by means of 'a-crank, of a treadle, or of any of the well-known systems
ordinarily used.
I claim the sawing apparatus, substantially as described above.
In witness whereof, I, the said Jean Baptiste Bagary, have hereunto
set my hand and seal, this 15th day of May, in the year of our
'Lord 1855.
דמת
J. B. BAGAI
D.
TOT