IMPROVEMENTS IN SHAKERS FOR THRASHING MACHINES
Year: 1863

page_text: LETTERS PATENT to Frederick Flavell, of Welton, near Daventry, in the
County of Northampton, Machinist, for the Invention of "IMPROVEMENTS
IN SHAKERS FOR THRASHING MACHINES."
Scaled the 9th February 1863, and dated the 15th August 1863.
PROVISIONAL SPECIFICATION left by the said Frederick Flavell at the
Office of the Commissioners of Patents, with his Petition, on the 15th
August 1863.
I, FREDERICK FLAVELL, of Welton, near Daventry, in the County of North-
ampton, Machinist, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SHAKERS FOR THRASHING MACHINES," to be as follows:-
This Invention consists in rendering the action of shakers more effectual
and reducing the friction of shakers, more particularly as adapted for steam
thrashing machines, which shakers I prefer to place over or across the shog
board reclining towards the drum, the shakers to vibrate on the top of the
springs one up and another down, being attached (subject to the action of the
springs) to the shog board and to the carrier or board with the riddle which
move backwards and forwards. the shog board one way and the carrier the
other, communicating motion to the spring shakers and shaking the straw.
The means which I at present prefer to adopt are these :-The framing of the
machine supports horizontal bars from which flat spring pieces slant up to the
shakers, the said shakers having other spring connections se uring the same to
the shog board and to the carrier respectively, the shog board and carrier being

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Flavell, in the Great Seal Patent Office on the 15th
February 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
FLAVELL, of Welton, near Daventry, in the County of Northampton, Machinist,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of August in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Frederick Flavell, Her special licence that I, the said Frederick Flavell,
my executors, administrators, and assigns, or such others as I, the said
Frederick Flavell, my executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times there-
after during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN SHAKERS FOR THRASHING MACHINES," upon the condition (amongst
others) that I, the said Frederick Flavell, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands
and scals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Frederick Flavell, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof :-
The object and purport of my improvements are to render the action of the
shakers of thrashing machines more effectual and to reduce the friction thereof,
more particularly when adapted to steam thrashing machines, by the adoption
and use of springs in lieu of such mechanical arrangements as have hitherto
been adopted, which springs 1 can either place over the shog board, as shewn

page_text: in Fig. 1 of the accompanying Drawings, inclining towards the drum of the
thrashing machine, and in this case the shakers vibrate on the top of springs
some straight and flat and others curved (as shewn in the Drawing Fig. 1)
vibrating one up and another down; the curved springs attaching the shaker
to the shog board and carrier or board with the riddle as shewn (see Fig. 1.)
The shog board and carrier being supported by moveable suspension or sup-
porting rods and other necessary adjuncts, the said spring arrangements
communicating motion to the shakers and shaking the straw, or instead of the
foregoing arrangements I would use flat and straight springs only and attach
the shaker to the lower end thereof, as shewn by the accompanying Drawings,
Fig. 1 shews an outline vertical section of arrangements for communicating
motion by springs placed beneath the shaker. Fig. 2, elevation of a machine
in which the shaker is shewn suspended on the lower ends of the flat straight
springs aforesaid; Fig. 3, plan view thereof; Fig. 4, a cross section thereof
taken through the middle of the machine.
A denotes the outside frame or casing of the thrashing machine supported
upon travelling wheels; B, the driving band wheel for the driving strap for
communicating motion to the fast and loose pulley for giving motion to the
feed roll; C, the shaker; D, the riddle shewn as made all in one with the shog
board; E, the fast and loose pulley whereby the motion communicated by the
driving band from the wheel B, which wheel (B) can be provided with a
second groove for a driving band from a steam engine or other motor; F, the
flat springs for the shaker, which are made either of wood, metal, or other
suitable material, and are shewn as secured at top to the frame or case a
between two holding bracket pieces a, b, which are slanted off as shewn, the
bottom of these springs being secured to the shaker by a cross bar which is
bolted, screwed, or secured to the shaker and extends from one side to the other
of the machine, being secured to a spring at each end (see x and x'); G are
similar flat springs securing the riddle and shog board to the frame A as shewn ;
H, the cranks or crank axle for the connecting or supporting rods for the
shaker, and the riddle and shog board; I, the connecting or supporting rods for
shog board and riddle, these being straight but slanted upwards and connected,
free to vibrate to the shog board and riddle; K, the connecting or supporting
rods for the shakers, these being bent or curved and passed through openings
in the shog board and connected to the cranked axle H and to the shaker
beneath the same; L, the feed roll. The flat springs which I use as aforesaid

page_text: this are simply pieces of springy metal or material which I prefer to make in
form as seen in the edge view
The front view being thus:- Wood,
metal, or other material can be employed in the construction of thrashing
machines with my improvements applied thereto according to the usual rules
of construction of such machines as may be practised by makers thereof. When
required to be put to work motion may be communicated to the driving band
wheel as aforesaid, or by the winch handle shewn in the Drawing, the axle of
which is the cranked axle H, which by means of the connecting or supporting
rods communicates the necessary vibratory motion to the shaker and the
riddle and shog board, as will be obvious upon perusal of the foregoing
description.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I hereby declare
that I claim, with regard to my Invention herein described, the use of springs
for communicating motion to and supporting the shakers of thrashing machines.
Also the combinations of parts constituting my improvements in thrashing
machine shakers as herein described.
In witness whereof, I, the said Frederick Flavell, have hereunto set
my hand and scal, this Thirteenth day of February, in the year of
our Lord One thousand eight hundred and sixty-four.