Improvements in Mowing and Reaping Machines.
Year: 1895

page_text: Date of Application, 17th Dec., 1895
Complete Specification Left. 4th Sept., 1896-Accepted. 17th Oct. 1898
TRUVIDIONAL FEITICATION.
Improvements in Mowing and Reaping Machines.
I, EDWARD PRATT, of the Albert Iron Works, Uxbridge, in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
:-
My invention relates to mowing and reaping machines in which.a bar carrying
triangular cutting knives or blades is made to reciprocate rapidly backward and
forward.
In such machines it is important that the bar and the parts connected to it, that
is to say the knife blades and the bar-head by which the bar is driven backward and
forward, should be very strongly and securely attached together, and it has been
usual to so attach them by rivetting.
It has been proposed, however, to form the separate triangular blades with
sockets fitting upon the bar, upon which they can be slipped in sufficient number,
the whole of them being firmly held in position by a nut at the end of the bar, so
that when required one or more of them can be quickly removed for the purpose of
sharpening, or for the substitution of others.
My present invention relates to an improved method of constructing and fixing
the bar-head without rivets, so that it can be quickly and easily removed and
replaced when necessary. For this purpose I make the bar-head in the form of a
socket of sufficient length, fitting upon the end of the bar, and beld in its place by
a nut screwed upon the end of the bar, or by a key or equivalent fastening.
I make the part of the bar upon which the socket fits taper for a sufficient length,
the interior of the socket being of corresponding shape, so that when the nut is
screwed up the bar-head is firmly and securely held in position, but can be readily
removed and replaced when necessary. Or, the bar may have a shoulder upon it
against which the socket is forced when the nut is screwed up.
When loose blades of the kind described are fitted upon the bar they are
tightened up against the end of the bar-head, and the entire apparatus then
consists of the bar carrying the loose cutting blades and the separate bar-head all
held tightly and firmly together by the nuts at the ends of the bar.
The socket described is provided with a joint or projection by which it is
driven.
Improvements in Mowing and Reaping Machines.
I, EDWARD PRATT, of the Albert Iron Works, Uxbridge, in the County of
Middlesex, Engineer, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, and accompanying drawing, that is
to say :-
My invention relates to mowing and reaping machines in which a bar carrying

page_text: triangular cutting knives or blades is made to reciprocate rapidly backward and
forward.
In such machines it is important that the bar and the parts connected to it, that
is to say the knife blades and the bar-head by which the bar is driven backward
and forward, should be very strongly and securely attached together, and it has
been usual to so attach them by rivetting.
It has been proposed, however, to form the separate triangular blades with
sockets fitting upon the bar, upon which they can be slipped in sufficient number,
the whole of them being firmly held in position by a nut at the end of the bar, so
that when required one or more of them can be quickly removed for the purpose of
sharpening, or for the substitution of others.
My present invention relates to an improved method of constructing and fixing
the bar-head without rivets, so that it can be quickly and easily removed and
replaced when necessary.
The accompanying drawing is in illustration of my invention,
Figure 1 being a plan of the knife bar ;
Figure 2 a similar view, and Figure 3 an end view, of the same bar with the
knife blades and bar-head fitted upon it and fixed in position;
Figure 4 a plan, and Figure 5 an end view of the bar-head separately.
I make the bar-head in the form of a socket f of sufficient length, fitting upon
the end of the bar d, and held in its place by a nut i screwed upon the end of the
bar, or by a key or equivalent fastening.
I make the part h of the bar d upon which the socket f fits, taper for a sufficient
length, the interior of the socket being of corresponding shape, so that when the
nuti is screwed up the bar-head is firmly and securely held in position upon the
bar, but can be readily removed and replaced when necessary. Or, the bar may
have a shoulder upon it against which the socket is forced when the nut is
screwed up.
When loose blades or cutting knives a of the kind described are fitted upon the
bard they are tightened up against the end of the bar-head by a nut e at the other
end of the bar, and the entire apparatus then consists of the bar d carrying the
loose cutting blades a and the separate bar-bead all held tightly and firmly together
by the nuts e and i at the ends of the bar.
The socket described of the bar-head is provided with a joint or projection
having a hole g by which it is driven. The hole in the sockets, instead of being
square, may be narrower at its lower side, so that if the lower part of the socket be
completely worn away, it still remains upon the bar, and cannot fall off.
I do not confine myself to the size, proportions, and precise details of the parts
of the apparatus, but
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In mowing and reaping machines ;
1. The method of fixing the bar-head, by forming it with a socket f carrying the
driving bracket at g, and having a tapered hore fitting upon the tapered part h of
the bar d and fixed by the nut i, substantially as described and illustrated.
2. In the method of fixing the bar-head described in Claim 1, the socket f
having a parallel instead of a tapered bore, fitting upon the knife-bar and tightened
up against a shoulder upon the knife-bar, substantially as described.
3. The combination of the tapered or shouldered bar d, socketted knife-blades a,
ssakotted har-bood ƒ a ond nuts a and i substantially as described and illustrated.
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.