Year: 1897

page_text: GEORGE EBENEZER JENNINGS, Marine Engineer, 97, Mayfield Road, Gosport,
Portsmouth, do hereby declare the nature of this invention to be as follows:
It shall consist of a revolving cylinder casting having three or four cuts of equal
distance in its circumferance, at about one third of its diameter in depth, run spirally
from end to end, each cut ending in a parellel line to the commencement of the
other, and on the outer sides of these cuts are placed knives, thus causing in their
circuit (when in motion) a continual flow of hay, straw, or herbs as the case may be.
It may be stated that there will be a fly wheel, main bearing, spiral cutter, main
bearing, and bevel-wheel with main shaft running through each, in front of the
machine and from the bevel-wheel on main shaft there will be worked another
bevel-wheel from which the roller wheels will be worked or set in motion.
The mouth of this machine will be arched to correspond with the circuit of the
knives.
I wish it to be understood that the roller-wheels will be worked with a worm (as
in other machines) from a shaft at right angles to the main shaft, and at the side
of the machine, that is to say a shaft, or spindle with a bevel-wheel at one end and
a worm at the other.
I may just mention also, that the knives are to be slotted at the back end, and
secured by bolts on the spiral casting, to allow of their removal nearer to the face
of the machine, as they wear away by continuous work, and each knife can be taken
off and replaced easily.
The advantages gained are
1stly. That the amount of leverage (resistance) is more uniform throughout the
revolution, the cutting always taking place at a certain distance from the centre
of spiral cutter and never off the cut.
2ly. This machine can be easily worked on account of the diameter of the fly
wheel being about three times the diameter of the spiral cutter, thus affording more
power leverage.
3ly. There being three, or four cuts in one revolution at a considerable length,
the machine will yield a large amount of chaff.
100
GEORGE EBENEZER JENNINGS.
97, Mayfield Road, Gosport.

page_text: Spiral Chaff Cutter.
I, GEORGE EBENEZER JENNINGS, of 97, Mayfield Road, Gosport, in the County of
Hants, Marine Engineer, do hereby declare the nature of this invention, and in
what manner the same is to be performed to be particularly described and "ascer-
tained in and by the following statement:-
This chaff cutter machine is provided with a fly wheel spindle upon which is
fixed a helical boss or one formed with helical ridges flanges or lugs against the
upstanding sides of which knives are firmly and adjustably fixed.
The axis of the helical boss is horizontal and transverse to the direction of the
feed of the material to be cut up, as it comes out of the mouth of the feed trough.
The said mouth is formed with a curved face and is adapted to correspond with the
circuit of the knives when the mouth is raised or lowered as required.
J.
In the accompanying drawing Fig. 1 is an end view of such a machine, Fig. 2 a
side view, Fig. 3 a back end view and Fig. 4. a vertical cross section through the
cutter boss and its helical knives.
..
F
Upon the flywheel spindle A is fixed a boss B with helical grooves, three in num-
ber as an example; in these are fixed by means of screws C the helical cutter blades
or knives D projecting somewhat beyond the boss B and provided with oblong
holes for adjustment.
The pitch of the knives is such that as one knife is finishing the next one
commences to cut.
The face E of the mouth of the feed trough is curved to correspond with the
circuit of the cutting edge of the knives the upper part of the said mouth being
formed with bearings, bolted thereto or integral therewith, for the upper feed
spindle M. In order that the upper part of the mouth when raised or lowered
may always correspond with the circuit of the knives it is adapted to slide between
curved guides E, E the curve of which corresponds to an arc of a circle struck
from the centre of the cutter shaft A or thereabouts. The upper feed roller is
weighted in the usual manner by means of slotted links and a weighted pivotted
lever. The feed rollers are driven by a bevel wheel G on the spindle A gearing
with a bevel wheel H on a spindle I provided with worm K which gears with a
worm wheel L on the upper feed spindle M and a worm wheel O on the lower feed
spindle N or in any other well known manner.
By the use of the aforesaid cutting arrangement the following advantages are
obtained;
the knives are mounted and fixed in such a solid and rigid manner that
they do not spring and thus they take the least possible power to work and cut clean
and without any tearing or pulling action on the material; the knives can be re-
moved and replaced without removing the spindle A and also easily adjusted and
as they wear away can be moved out and refixed by any unskilled person; as the
mouth is always at or early at a fixed distance from the knives where the cutting
takes place, the material is fed to the knives in a firm or compact state and thus
a saving in power is effected by furthering a clean even cutting action; the strain
throughout the machine is evenly distributed; the machine works easily and the
amount of work done is increased.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is :-
1. In a chaff cutting machine the application and use on the cutter spindle of a
boss provided with helically arranged midees Honcos on La

page_text: knives to be firmly fixed thereto said spindle being arranged transversely to the
mouth of the feed trough or in a direction at right angles to the direction of the
feed, substantially as set forth.
2. The construction of helical boss and knives shewn in the drawing.
3. In a chaff cutting machine the combination of a revolving knife drum, a
mouth curved to correspond with the circuit of the cutting edge of the knives and
an upper feed roller having bearings secured to or integral with the upper portion
of said mouth, said upper portion being adapted to slide in curved guides so
that the face of said upper portion in any position corresponds with the circuit of
the cutting edge of the knives substantially as set forth.
Dated this Twenty-third day of December 1807
JENSEN & SON,
77, Chancery Lane, London, W.C.,
Patent Agents.