Improvements in Portable Combined Chaff Cutters,
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Portable Combined Chaff Cutters,
I, ROBERT MAYNARD, of Whittlesford Works, near Cambridge, Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates more particularly to the feed mechanism of portable
combined chaff cutters and has for its object to make such machines work more
smoothly and easily and to obviate all risk of injury to the attendant.
My invention consists of the combination with an ordinary endless feed web of
a front pair of rollers and a drum of not less than 16" inches diameter provided
with flanged ends and cross bars the latter arranged to produce a surface corre-
sponding to that of the feed web. This drum supersedes and is substituted for the
back roller or rollers hitherto employed and is fitted and arranged to rise and fall
in the feed box in such a manner that in conjunction with the endless feed web, it
feeds forward to the feed rollers the stuffs to be cut. The said drum may be
operated by chain or other gear or in any other suitable and convenient manner,
and is arranged to travel at a speed corresponding to that of the endless feed web
when in motion. The advantages of this novel combination of parts is, that when
the feed mechanism is in operation, the feed is effectually drawn forward, thus
preventing any choking of such mechanism, and so obviating any necessity for the
attendant to insert his hand and arm therein in order to clear away any stoppage, in
doing which he incurs the danger of being drawn into the machine by being
caught in the mechanism when it is set free and resumes its work.
Daded : 1CT 1
1007
ELT & Co.,
Patent Agents, 43, Southampton Buildings, London,
Agents for Applicant.
I, ROBERT MAYNARD, of Whittlesford Works near Cambridge, 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:-
This invention relates more particularly to the feed mechanism of portable
combined chaff cutters, and has for its object to ensure such feed mechanism
working smoothly and easily, thus preventing choking and obviating all risk of
injury to the attendant. This I effect by the novel arrangement and combination
of feed mechanism illustrated in the accompanying drawings, wherein
Figure 1 is a view in side elevation of so much of a portable combined chaff
cutter as is necessary to illustrate my invention,―

page_text: Figure 2 is a vertical section taken on line A. B. Figure 1,—and
Figure 3 is a view in perspective of the drum feeder hereinafter described.
Similar letters of reference indicate corresponding parts throughout the several
views.
The improved arrangement and combination of feed mechanism in a portable
chaff engine which constitutes my invention consists of the combination with the
ordinary endless feed web a and feed rollers 6 of a drum feeder c mounted on a
spindle c' carried in pivoted supports d attached to the frame of the machine in
any convenient manner and position, so that when the feed mechanism is in
operation the drum feeder is free to rise and fall, and thereby accommodate itself
to the varying thickness of the feed upon which it exercises a persistent and
uniform pressure.
Such drum feeder supersedes and dispenses with the guard
rollers heretofore in use in the feed mechanism of such machines and is made, say,
from about 14 inches to about 24 inches in diameter, its dimensions being varied
according to requirements, it being understood that the drum feeder must always
be of a sufficient diameter to ensure its engaging with the feed and in conjunction
with the endless feed web, forcing such feed forward to the feed rollers, so as to
prevent the choking of the machine. The drum feeder is provided with cross
bars arranged as shewn in Figures 2 and 3, of the accompanying drawings, such
cross bars being screwed or otherwise fastened thereto, or formed thereon by
casting, or in any other convenient manner, so as to produce an external surface
corresponding with that of the ordinary endless feed web of a portable combined
chaff engine. Such drum feeder may be operated by chain or other gear, or in any
other suitable manner, and is arranged to travel at a corresponding speed to that
of the endless feed web with which it works in conjunction.
One method of actuating such drum feeder is illustrated in the accompanying
drawings and consists in mounting two chain wheels e, e', which are either
cast together, or bolted or rivetted together, upon a stud f, fixed to the
frame of the machine so that when motion is given to the wheel e, the wheel el is
also actuated. The chain wheel e, gears with the endless feed web a, which
imparts motion thereto and to the wheel e¹ whence such motion is transmitted by
means of an endless chain to two other chain wheels g. h. mounted on a spindle i
carried in suitable bearings fixed to the frame of the machine, while a fourth
chain wheel j, which is keyed to the shaft c¹ of the drum feeder c receives motion
from the wheel by means of an endless chain ', and so actuates the drum feeder
which is thus driven at a corresponding speed with the endless feed web with which
it works in conjunction. Such drum feeder may however be actuated in any other
convenient manner, as I do not confine myself to the precise mechanical details
herein described, as the same admit of variation in minor details without departing
from the essential features of my invention. I am also aware that a rising and
falling motion has already been employed in conjunction with certain arrangements
of feed mechanism for portable chaff engines and I therefore make no claim to
such motion broadly, but only in connection with the particular arrangement and
combination of feed mechanism which constitutes my invention vizt., the combina-
tion of a drum feeder constructed and arranged substantially in the manner
hereinbefore described with the ordinary endless feed web and feed rollers of a
portable combined chaff cutter which combination construction and arrangement
possess the essential advantages of being simpler and more effective than any
other feed mechanism for portable combined chaff cutters heretofore in use.
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 1
claim is ;
1. In a portable combined chaff cutter the combination with the ordinary endless
feed web and feed rollers of such machine of a drum feeder constructed arranged
combined and fitted all substantially in the manner hereinbefore described and
shown

page_text: 2. Fitting a portable combined chaff cutter with a drum feeder constructed,
combined and arranged, all substantially in the manner hereinbefore described and
shewn.
Dated thin 7th do of November 1805
Elt & Co.,
ROBERT MAYNARD.
Registered Patent Agents, 43 Southampton Buildings, Holborn, London,
Agents for Applicant.