CERTAIN IMPROVEMENTS IN MACHINERY FOR PUNCHING AND SHEERING METALS."
Year: 1854

page_text: LETTERS PATENT to Andrew Shanks, of 6, Robert Street, Adelphi,
Westminster, Engineer, for the Invention' of "CERTAIN IMPROVEMENTS IN
MACHINERY FOR PUNCHING AND SHEERING METALS."
PROVISIONAL SPECIFICATION left by the said Andrew Shanks at the
Office of the Commissioners of Patents, with his Petition, on the 23rd
January 1854.
I, ANDREW SHANKS, Engineer, 6, Robert Street, Adelphi, Westminster, do
hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS
IN MACHINERY FOR PUNCHING AND SHEERING METALS," as shewn at Figs. 1, 2, & 3,
to be as follows:-
I claim the use and application of an eccentric bush marked (a) Fig. 1,
for the purpose of varying the stroke, of punch, and also for stopping the same
at pleasure..
I claim the application to punching and sheering machines of skew-toothed
geering, as marked b, b, Fig. 2.
I claim the arrangement for stopping the sheers (being self-acting) as shewn
in Fig. 3, and marked c, c, being drawn in section.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Andrew Shanks in the Great Seal Patent Office on the 22nd
July 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANDREW
SHANKS (Engineer), 6, Robert Street, Adelphi, Westminster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of January, in the year of our
Lord One thousand eight hundred and fifty-four, in the seventeenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Andrew Shanks, Her special licence that I, the said Andrew Shanks,
my executors, administrators, and assigns, or such others as I, the said Andrew
Shanks, 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 "CERTAIN IMPROVEMENTS IN MACHINERY
FOR PUNCHING AND SHEERING METALS," upon the condition (amongst others) that
I, the said Andrew Shanks, by an instrument in writing under my hand and
seal, should particularly describe and ascertain the nature of the said Inven-
tion, 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 Andrew Shanks, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, reference being had to the Drawings hereunto annexed, that is
to say :-
Figs. 1 and 2 are elevation views of the machine.
Fig. 3 is a section at the red line A²; B².
Fig. 4 shews the main shaft with the 2 excentrics (a) and (b), also the
excentric bush (e), in section; (c), (c), body of main shaft.
A', Figs. 1, 2, and 3, is the body of the machine; (1) is the punch; (m), the
die to receive the punch; (h); the sliding piece in which works the excentric
bush (e) (g), the fly wheel; (i), the wheel with skew teeth, in which works
the spiral pinion (f); (k), the angle iron being cut; (o), the connecting piece
for sheers; (s), the handle; (v), the slide carrying the sheer blade.

page_text: CLAIMS.
First, the use and application of the excentric bush (e), for regulating the
stroke of punch.
Second, the application of skin toothed wheel with spiral pinion to punching
and sheering machines.
Third, the placing of the sheers out of the centre of machine, so that the
force acts by pressing the blades closer together when cutting.
In witness whereof, I, the said Andrew Shanks, have hereunto set my
hand and seal, this Twenty-second day of July, in the year of our
Lord One thousand eight hundred and fifty-four.
ANDREW SHANKS. (L.S.)