AN IMPROVEMENT IN SCYTHES
Year: 1855

page_text: LETTERS PATENT to Ebenezer Tyzack, of Abbey Dale Works, Sheffield,
for the Invention of "AN IMPROVEMENT IN SCYTHES."
Sealed the 6th July 1855, and dated the 7th May 1855.
PROVISIONAL SPECIFICATION left by the said Ebenezer Tyzack at the
Office of the Commissioners of Patents, with his Petition, on the 7th
May 1855.
I, EBENEZER TYZACK, of Abbey Dale Works, Sheffield, do hereby declare
the nature of the Invention for "AN IMPROVEMENT IN SCYTHES" to be as
follows:-
This Invention has for its object an improvement in the construction of that
part of the back of the blade of a scythe which is near to the point. Hereto-
fore, in some cases, that part of the back edge of the blade of a scythe which
is near the point has been bent or turned over for some inches in length, in
such manner as to form a sheath, to receive the point of the strengthening rib
or scythe back, which is rivited to the back edge of the blade; and such point
of the strengthening rib or back has in such cases been filed away, or shaped.
so as to produce a shoulder at the back edge and upper side, to correspond
with the thickness of the turned-over part of the blade. Now, my improve-
ment consists of simply making that part of the strengthening rib or scythe.
back where it enters the turned-over part of the blade, flush and taper,
and of forming the edge of the turned-over part of the blade with a bevelled
edge, so as to require no shoulder on that part of the scythe back, thus
avoiding the cost of making such shoulder, and consequently the weakness
resulting therefrom.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Ebenezer Tyzack in the Great Seal Patent Office on the
3rd November 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EBENEZER
TYZACK, of Abbey Dale Works, Sheffield, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing dato the Seventh day of May, in the year of our Lord One
thousand eight hundred and fifty-five, in the eighteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Ebenezer Tyzack, Her special licence that I, the said Ebenezer Tyzack,
my executors, administrators, and assigns, or such others as I, the said
Ebenezer Tyzack, 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, exer-
cise, and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVEMENT IN
SCYTHES," upon the condition (amongst others) that I, the said Ebenezer Tyzack,
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 tho
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 Ebenezer Tyzack, do hereby declare
the nature of the 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 thereof (that is to say) :-
:-
This Invention has for its object an improvement in the construction of that
part of the back of the blade of a scythe which is near to the point. Here-
tofore, in some cases, that part of the back edge of the blade of a scytho
which is near the point has been bent or turned over for some inches in length,
in such manner as to form a sheath to receive the point of the strengthening
rib or scythe back, which is rivited to the back edge of the blade, and such
point of the strengthening rib or back has in such cases been filed away, or
shaped so as to produce a shoulder at the back edge and upper side, to corre-
spond with the thickness of the turned-over part of the blade. Now, my
improvement consists of simply making that part of the strengthening rib or
scythe back where it enters the turned-over part of the blade, flush and taper,
and of forming the edge of the turned-over part of the blade with a bevilled

page_text: edge, so as to require no shoulder on that part of the scythe back, thus
avoiding the cost of making such shoulder, and consequently the weakness
resulting therefrom.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
Figure 1 is a plan of part of a scythe blade before the end is turned over;
Figure 2 is an edge view, with the strengthening rib fixed thereto; Figure 8
shows two views of part of the blade when complete.
The part a, shewn by dotted lines in Figure 1, is to be turned over, and to
form a sheath of the back rib; at the part a' the metal is bevilled; the
strengthening rib 6 is tapered and bevilled to the same inclination as that of
the part a'; hence, when the parts a, a, b, come together, there is no sudden
decreasing of strength of the point or end of the strengthening rib 6, as is the
case when a shoulder is made near the end or point of rib b, and where
the thickness of metal at a' is not diminished. In other respects, a scythe
blade and its strengthening rib is made and connected together as heretofore,
and as is well understood.
Having thus described the nature of my said Invention, and the manner
of performing the same, I wish it to be understood that I do not claim the
turning over of the pointed end of a scythe blade so as to form a sheath for
the point or end of the strengthening rib; but what I claim is, the bevilling
off the part a, a', and forming the end or point of the strengthening rib to
fit thereto, as described.
In witness whereof, I, the said Ebenezer Tyzack, have hereunto set my
hand and seal, this Second day of Novem', in the year of our Lord
One thousand eight hundred and fifty-five.
Witness,
WILLIAM WILLIAMS, Ironfounder,
Bedford.
EBENEZER TYZACK. (L.B.)