IMPROVEMENTS IN PUNCHES
Year: 1871

page_text: LETTERS PATENT to Joseph Caliste Grosvenor du Vallon, of Birming-
ham, in the County of Warwick, Engineer, for the Invention of
"IMPROVEMENTS IN PUNCHES."
Sealed the 12th January 1872, and dated the 25th July 1871.
PROVISIONAL SPECIFICATION left by the said Joseph Caliste Gros-
venor du Vallon at the Office of the Commissioners of Patents,
with his Petition, on the 25th July 1871.
I, JOSEPH CALISTE GROSVENOR DU VALLON, of Birmingham, in the
County of Warwick, Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN PUNCHES," to be as follows:→
F
My Invention consists in the construction of punches with a single
lever acting in combination with two knuckles, whereof one turns on a
pin having its bearing in the upper solid part of the frame of the
instrument, and the other is connected to the body or carrier of the
punch. The said two knuckles are respectively connected to the upper
and under sides of the lever, which at the beginning of the stroke is
in a horizontal position with the knuckles inclined obliquely to the pin

page_text: of the lever, but at the end of the stroke the lever is brought down
into an inclined position and the knuckles are brought into a vertical
line with the pin of the lever.
By the foregoing arrangement of the parts the angle which the lever
has to make in order to work the punch is diminished and the ordinary
strain is taken off the lever, also the side strains to which the parts of
ordinary punches are exposed are obviated by the thrust being exerted
in a direct vertical line through the centre of motion of the lever. The
knuckles are or may be connected together and with the lever by means
of an elongated ring or link, and the end of the long arm of the lever
is worked by means of a screw inserted in a small frame pivoted to the
frame or standard of the instrument, the screw also passing through a
screwed nut let into the end of the lever.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Caliste Grosvenor du Vallon in the Great
Seal Patent Office on the 25th January 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
CALISTE GROSVENOR DU VALLON, of Birmingham, in the County of
Warwick, Engineer, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of July, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Joseph Caliste Grosvenor du Vallon, Her
special licence that I, the said Joseph Caliste Grosvenor du Vallon, my
executors, administrators, and assigns, or such others as I, the said
Joseph Caliste Grosvenor du Vallon, 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 PUNCHES," upon
the condition (amongst others) that I, the said Joseph Caliste Gros-
venor du Vallon, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals should

page_text: 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 Joseph Caliste Grosvenor du Vallon,
do hereby declare the nature of my 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 Drawings
hereunto annexed, and to the letters and figures marked thereon (that
is to say):-
My Invention of "Improvements in Punches" consists in the con-
struction of punches with a single lever acting in combination with two
knuckles, whereof one turns on a pin having its bearing in the upper
solid part of the frame of the instrument, and the other is connected to
the body or carrier of the punch. The said two knuckles are respectively
connected to the upper and under sides of the lever, which at the
beginning of the stroke is in a horizontal position, with the knuckles
inclined obliquely to the pin of the lever, but at the end of the stroke
the lever is brought down into an inclined position, and the knuckles
are brought into a vertical line with the pin of the lever.
By the foregoing arrangement of the parts the angle which the lever
has to make in order to work the punch is diminished, and the ordinary
strain is taken off the lever, also the side strains to which the parts of
ordinary punches are exposed are obviated by the thrust being exerted
in a direct vertical line through the centre of motion of the lever. The
knuckles are or may be connected together and with the lever by means
of two rings, or by means of an elongated ring or link, and the end of
the long arm of the lever is worked by means of a screw inserted in a
small frame pivoted to the frame or standard of the instrument, the
screw also passing through a screwed nut let into the end of the lever.
Having thus stated the nature of the said Invention I will proceed to
describe more particularly in what manner the same is to be performed
by the aid of the accompanying Drawings, in which is represented a
punch constructed in the manner herein-before referred to.

page_text: and 5 represent the two knuckles; Fig. 6 shews the screw and carrying
frame; and Fig. 7 represents this frame. In these several Figures the
same letters of reference indicate corresponding parts.
A. is the frame or body of the instrument; B is the lever having its
fulcrum at C which is slotted so as to give the requisite play in order
to accommodate the movements of the lever, the other end of which is
connected with the screw D carried by the small frame E pivoted to the
lower part of the frame or body of the instrument. F is the upper
knuckle turning on a pin G having its bearing in the upper solid part
of the frame or body A, and connected to the upper side of the lever B
by means of the ring H, and I is the lower knuckle connected to the
under side of the lever by the ring K and to the body or carrier of the
punch L by the ring M.
The action of the punch is as follows:-On the lever B being brought
into an inclined position by turning the screw D the two inclined
knuckles F and I will be moved until at the end of the stroke they
will be brought into a vertical line with the pin or fulcrum C of the
lever; thereby carrying down the punch connected to the lower knuckle
with the force applied in a direct vertical line through the centre of
motion of the lever.
Some of the details contained in the foregoing description of the parts
of the punch may be varied. As, for instance, instead of the two
rings H and K one elongated ring or link may be used for connecting
the two knuckles together and with the lever. Also the knuckles may
be varied in form and size, and if required for certain purposes either of
the two may be lengthened and the other shortened, and in extreme
cases either of the two may be reduced to a simple roller, each variation
of form and arrangement in the parts being only modifications of the
general principle of construction described.
The mode of connecting the screw with the frame may also be varied
if preferred.
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I hereby declare that I do not
claim as of my Invention any of the separate parts of the punch
represented and described, nor their combination otherwise than as
herein-after stated; but what I do claim as of my Invention is, the
construction of punches with a knuckle joint in the form described,

page_text: or in a modified form, combined with a single lever and a screw, and
acting in the manner herein-before described.
In witness whereof, I, the said Joseph Caliste Grosvenor du Vallon,
have hereunto set my hand and seal; the Twenty-second day of
January, in the year of our Lord One thousand eight hundred and
seventy-two.
Witness,
JOSEPH CALESTE GROSVENOR DU VALLON. (L.S.)
JAMES HOLLIDAY,
Warwick Road,
Solihull,
Post Office Messenger.