IMPROVEMENTS IN KNIVES AND KNIFE BARS FOR REAPING AND MOWING MACHINES.
Year: 1869

page_text: LETTERS PATENT to Samuel Osborn, of Sheffield, in the County of
York, Steel Manufacturer, for the Invention of "IMPROVEMENTS IN
KNIVES AND KNIFE BARS FOR REAPING AND MOWING MACHINES.".
Sealed the 4th February 1870, and dated the 9th August 1869.
PROVISIONAL SPECIFICATION left by the said Samuel Osborn at the
Office of the Commissioners of Patents, with his Petition, on the
9th August 1869.
I, SAMUEL OSBORN, of Sheffield, in the County of York, Steel Manu-
facturer, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN KNIVES AND KNIFE BARS FOR REAPING AND MOWING MACHINES,"
to be as follows, that is to say:-
This Invention relates to certain additions to "Improvements in
Knives and Knife Bars for Reaping and Mowing Machines," for which
Letters Patent were applied for by the present applicant on the 22d
February of the present year (No. 541).

page_text: The present Invention consists in bending up the back part of each
knife at a right angle or other convenient angle, and in attaching each
knife to the knife bar by means of the bent up portion. The knife bar
is set in a position corresponding to the new position of the backs of
the knives, and the knives are attached to it by the ordinary process of
rivetting; or the bar is made in the form of a clip or otherwise, as
described in the Provisional Specification of the earlier application
herein-before referred to, the knives being held as described in the
said earlier Provisional Specification.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Samuel Osborn in the Great Seal Patent Office on
the 8th February 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ŠAMUEL
OSBORN, of Sheffield, in the County of York, Steel Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of August, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Samuel Osborn, Her special licence
that I, the said Samuel Osborn, my executors, administrators, and
assigns, or such others as I, the said Samuel Osborn, 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
KNIVES AND KNIFE BARS FOR REAPING AND MOWING MACHINES," upon the
condition (amongst others) that I, the said Samuel Osborn, my exe-
cutors 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.

page_text: 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 in writing, reference being had to the accompanying
Drawings, that is to say :-
My said Invention relates to certain additions to "Improvements in
Knives and Knife Bars for Reaping and Mowing Machines," for which
I obtained Her Majesty's Royal Letters Patent, dated 22nd February,
1869 (No. 541).
And in order that my present Invention, and the manner of performing
the same, may be properly understood, I have hereunto appended a
Sheet of explanatory Drawings to be herein-after referred to and repre-
senting modifications of my improvements.
My present Invention consists in bending up the back part of each
knife at a right angle or other convenient angle, and in attaching each
knife to the knife bar by means of the bent up portion. A knife 2 with
the back 8 bent up in this way is shown in plan or face view in Figure 1,
in section in Figure 2, and in back view in Figure 3. The knife bar
is to be set in a position corresponding to the new position of the backs 8
of the knives 2, and the knives 2 may be attached to it by the ordinary
process of rivetting. I however prefer to make the knife bar 1 as
shown in face view in Figure 4, in back view in Figure 5, and in section
in Figures 6 and 7, that is to say, in the form of a clip, as described in
the Specification of my earlier Patent herein-before referred to, the
knives 2 being held as described in the said earlier Specification. The
bar 1 is shown with the eye piece 9 attached for the actuating con-
necting rod, but the manner of attaching the eye piece forms part of
another Invention. The knives 2 may be unperforated, as shown
at 10, 10, or they may have their middle portions punched or cut out
as at 11. When thus punched out they are bent so that the solid part
of the middle of the back does not reach below the level of the top
surface of the body 2 of the knife. The punched out opening 11
allows dirt to get away, which is additionally facilitated by extending
the opening through the bottom of the back. With the open knives
the clip bar 1 may be as shown in Figure 7, whilst with the plain
knives (10) it may be either as, in Figure 6, or as in Figure 7.

page_text: Having thus particularly described my said Invention and the manner
in which the same is to be performed, I have to state that I do not
restrict myself to the precise details herein described or delineated; but
that what I believe to be novel and original, and claim as the Invention
secured to me by the herein-before in part recited Letters Patent,
is, the bending of the back parts of the knives of reaping and mowing
machines and the correspondingly placing of the knife bars, as herein-
before described.
In witness whereof, I, the said Samuel Osborn, have hereunto
set my hand and seal, this Seventh day of February, in the year
of our Lord One thousand eight hundred and seventy.
SAMUEL OSBORN. (L.S.)