IMPROVEMENTS IN THRESHING MACHINES, AND SUCH LIKE AGRICULTURAL IMPLEMENTS OR MACHINERY
Year: 1877

page_text: LETTERS PATENT to Charles Robinson, of 19, Salisbury Street, Strand,
London, and Hull, Engineer, for the Invention of "IMPROVEMENTS IN THRESHING
MACHINES, AND SUCH LIKE AGRICULTURAL IMPLEMENTS OR MACHINERY,
Sealed the 22nd September 1877, and dated the 31st March 1877.
PROVISIONAL SPECIFICATION left by the said Charles Robinson at the
Office of the Commissioners of Patents on the 31st March 1877.
CHARLES ROBINSON, of 19, Salisbury Street, Strand, London, and Hull, Engineer.
"IMPROVEMENTS IN THRESHING MACHINES, AND SUCH LIKE AGRICULTURAL IMPLE-
MENTS OR MACHINERY."
In such machines for the purpose of applying self-feeding arrangements and band
cutters, the sheaves being first thrown on the platform, are carried forward by
forks fixed to an endless band, and the sheaves are further broken up or separated
by forks placed on the periphery of a wheel revolving in the direction of an endless
band, but at a slower speed.
The band, saw, or knife can be raised or lowered by means of a screw ad-
justment.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Robinson in the Great Seal Patent Office on the 28th
September 1877.
CHARLES ROBINSON, of 19, Salisbury Street, Strand, London, and Hull, Engineer.
"IMPROVEMENTS IN THRESHING MACHINES, AND SUCH LIKE AGRICULTURAL IMPLE-
MENTS OR MACHINERY."
In such machines for the purpose of applying self-feeding arrangements and band
cutters, the sheaves are first thrown on the platform, and carried forward by rakes
fixed to an endless chain, then carried forward by the rakes to the endless band
cutter, and on to the separator, and the sheaves are further broken up or separated
by forks placed on to a shaft worked by a crank.

page_text: In the accompanying Drawing Figures 1 to 4 exhibit the construction of ap-
paratus I prefer to employ.
Figure 1 is a plan view of the general arrangement of the machine. Figure 2
is an end view of Figure 1, exhibiting the two angularly placed pulleys and bands.
Figure 3 is a side view of the machine exhibiting the main framing with the
chain wheels and chains extending fore and aft on the main framing. Figure 4 is a
corresponding view to Figure 3 at the opposite end thereof, and also shows the
endless chain referred to in Figure 3.
A corresponding framework to that in Figure 2 carries the endless chain and rakes
fore and aft, subject to the adjustment of the smaller pulley at the one end of the
frame by means of a sliding block adjusted by a screw carrying the axle and bearings
at each end of the framework.
The rakes are mounted upon square linked chains, which in turn form the plat-
form, connected together and driven by two sets of square toothed pulleys with
two endless chains, having similar links at a given distance apart, each link being
connected to the other by means of hoop iron.
An endless rough edged steel knife with its cutting edge is set at an angle for
the purpose of operating upon the bands, and is worked by two pulleys; the said
pulleys being held in tension at a suitable pressure and adjustment by means of an
india-rubber ball with a nut at its outer end, the india-rubber ball acting as a
spring, and being also attached to the loose and sliding pulley, which is guided
back and forth, as is also shown is Figure 2.
The separators (for which no claim is made) are driven by a crank pin inserted in
a pulley connected by a rod to a separator shaft, which may be adjusted to the
proper height by means of a lever, as shown, so that upon the sheaves being put
across the feeder they are carried forward by the rakes to the druin. a, b, are the
main framing; c, d, are the two angularly placed pulleys or wheels, having around
them the rough-edged steel knife (h); e, f, are the two square linked endless
chains attached to the rakes g, g, &c.; i, i, are the driving pulleys which com-
municate with k, which drives the square toothed pulleys, l, and so communi-
cates motion to the rakes g, g; m, m, are the separators; m³, the adjusting
levers, and n the crank pin; p is the india-rubber ball, which adjust c and d.
9 is a flat pulley fixed over the drun), around which the endless chain r passes;
s is a screw which adjusts the endless square linked chain, and t is a handle
attached to the strap by which the parts are thrown in and out of gear.
Having now described the nature of my said Invention, and illustrated one of
the modes in which I propose to carry the same into effect, I wish it to be under-
stood that what I claim in connection therewith is,―
First. The improvement in threshing machines herein described.
Secondly. The improvements in band cutters, as herein described.
Thirdly. The use of square-linked chains in conjunction with square toothed
driving pulleys and rakes, all in the manner and for the purposes hercin set forth.
Fourthly. The application of an endless rough-edged steel knife set at an angle
for the purpose of cutting bands, as herein described.
Fifthly. The use of an india-rubber ball, as described, for the purpose of adjusting
the endless rough edged steel knives for cutting bands, as herein set forth.
In witness whereof, I, the said Charles Robinson, have hereunto set my hand
and affixed my seal, this 25th day of September, 1877.
Witness,
H. H. M. SMITH,
19, Salisbury Street,
Strand, W.C.
CHARLES ROBINSON. (L.S.)