Year: 1887

page_text: I, SAMUEL SIDNEY BROMHEAD of 97 Newgate Street, London, E.C., Patent Agent,
(communicated), 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 :—
My invention relates to that particular class of mowing-machines in which the cutter
is composed of a finger-bar and a sliding cutter-bar.
Heretofore, in order to reduce the friction caused by the contact of the parts,
rollers have been placed between them. These rollers have in some instances been
journaled upon fixed non-adjustable pivots, and in others they have had no pivots at
all, but were merely placed loosely between the parts. It is obvious that by either of
these constructions no compensation for the wear of the rollers, their journals, and the
bars can be made, and that after a short time the rollers will become useless, so far as
their original object is concerned.
The object of my improvement, therefore, is to overcome these difficulties; and it con-
sists, broadly stated, in the provision, between the adjacent edges of the two bars, of
rollers having fixed but adjustable journals or pivots, as hereinafter more particularly
described, and pointed out in the claims.
Figure 1 is a plan view of a part of the cutter-bar of a mowing-machine.
Fig. 2 is a view in cross-section through the bar on plane denoted by line x x of
Fig. 1.
Fig. 3 is a plan view of a portion of a cutter-bar, showing a modified form of my
device.
Fig. 4 is a view in cross-section of the latter device on plane denoted by line y y
of Fig. 3.
The letter a denotes a portion of the cutter of a mowing-machine; b, the finger-
bar; c,
the finger secured to the bar in the usual manner and position; d, the knife
or blade bar, having the usual knives or blades, d¹; and e, a roller supported on a
[Price fidl

page_text: suitable pivot adjustably connected to the finger-bar. This roller is preferably located
between the adjacent vertical edges of the finger-bar and blade-bar. Any desired
number of the rollers may be employed.
The preferred mode of securing the rollers adjustably in the frame is by means of
pivots or journals on blocks, having slots extending diagonally to the direction
of the length of the block, or diagonally to the general direction in which the rollers
are moved to be adjusted, and suitable screws or bolts passing through the said slots
and the finger-bar to fix the bar in position. For the sake of compactness, these
rollers may each lie in a socket or recess, , forined in the front edge of the finger-
bar, with the edge of the roller extending beyond the front edge of the bar a sufficient
distance to prevent the back of the blade-bar from coming in contact with it.
In Figs. 3 and 4, which illustrate a modification, the block is shown as having at
its forward portion an extension, g, projecting over the knife-bar, to prevent the said
bar from springing from its seat on the finger-bar.
The letter in Fig. 3 designates slots corresponding with 1 in Fig. 1. The
diagonal slots obviously give a firmer and more secure connection of the block with
the finger-bar. The blocks may be secured either to the upper or lower side of the
finger-bar.
The special advantage arising from my improvement is, that compensation for wear
of the rollers, their journals, and the bars may readily be made, and consequently
the parts kept in just the proper contact. The friction and rattling due from looseness
of parts is thus entirely avoided.
Cutters constructed with my improvement will be found to wear better and to cut
more easily and rapidly and with less expenditure of force than in the old forms.
Having now fully described and ascertained what my said Invention is, and how the
same is constructed and performed, as communicated to me by my foreign corre-
spondent, I do hereby declare that what I claim as my Invention, and desire to secure
by Letters-Patent is ;
1. The combination, in the cutter of a mowing-machine, with the finger-bar and a
reciprocating blade or knife bar, of a roller located between the two bars and turning
upon an adjustable pivot or journal, substantially as described.
2. The combination, in the cutter of a mowing-machine having the finger-bar and
a reciprocating blade or knife bar, of a roller bearing against the rear edge of the blade
or knife bar, secured upon a journal or pivot on a removable block, said block being
provided with the extension g on its forward edge, projecting over the knife or blade
bar, for the purpose specified.
3. The finger-bar and reciprocating knife or blade bar, combined with rollers located
between the adjacent vertical edges of the said bars and journaled upon removable blocks
secured to the finger-bar, substantially as set forth.
4. The finger-bar and reciprocating knife or blade bar, combined with rollers located
between the adjacent vertical edges of the said bars and journaled upon removable and
adjustable blocks, substantially as and for the purpose described.
5. The combination, in the cutter of a mowing-machine having the finger-bar and
reciprocating knife or blade bar, of a roller bearing against the rear edge of the blade
or knife bar secured upon a journal or pivot on a removable block, said block being
provided with diagonal slots, substantially as described, through which securing screws
or bolts are passed, as set forth.
10th
11007