IMPROVEMENTS IN THRASHING MACHINES
Year: 1884

page_text: We, GEORGE WHITE, Engineer's Manager of 15 Sewell's Walk, and GEORGE
WHITE the younger, Engineer's Foreman of 14 Sewell's Walk & FREDERICK
HOWARD LIVENS of 33 Portland St Engineer all dwelling in the city of Lincoln in
the same County do hereby declare the nature of our invention for "IMPROVEMENTS
IN THRASHING MACHINES" to be as follows:-
In thrashing machines in which the two reciprocating parts usually termed
"the top and bottom shoes" are driven by eccentrics fixed on a straight shaft
two on either side of the machine outside the framework. We form the eccentric
straps in the manner shown at Figure 1 of the drawing hereunto annexed with the
upper part of the strap bolted to the connecting rod and the lower part simply
keeping it in place.
In this way the bolts which hold the two parts together are much relieved from
strain,
. . :
We also in some cases form the upper part of the strap with a horn projecting
forwards from it as shown in which horn a hole is drilled to receive the end of a
round bar used for supporting and actuating one or other of the shakers or the
shakers may be driven by other eccentrics or by cranks formed on the shaft.
The other end of each of the connecting rods we connect to its respective shoe
in the way shown at Figures 1 and 2. A cast iron bracket is formed with a sole
to take the rod and is firmly bolted to the side of the shoe-further support being
obtained by forming a socket in it in which is bolted a wrought iron bar of any
suitable section preferably flat passing under and across the shoe to the other side
and being bolted thereto. There may also be formed on this bracket another lug
to which the "spring banger" ordinarily used can be bolted.
The rods themselves we form by preference of wood and they may be slightly
decreased in thickness at any suitable point to secure more spring.
"
The "shakers we support by cast iron brackets bolted to round bars, these
brackets may be made either as shown at Figure 3 or as shown at Figure 4.
The outer ends of the bars which support the rear end of the shakers we attach
by clips to the vibrating springs often used, these clips we make of the form shown
at Figure 5 which permits of easy adjustment,

page_text: The upper ends of the said springs are bolted to lugs cast by preference in a
bracket which forms a triple socket to receive the ends of three pieces of iron of
flat or half round or other suitable section arranged in the manner shown at
Figure 1 so as to stiffen the sides of the machine and at the same time permit of
the eccentrics being brought more closely to the sides by dispensing with an upright 5
member of the framing.
ALL
L
1004
We GEORGE WHITE Engineers Manager of 15 Sewells Walk, and GEORGE
WHITE the Younger Engineers Foreman of 14 Sewells Walk and FREDERICK
HOWARD LIVENS of 33 Portland Street Engineer all dwelling in the City of
Lincoln in the same County do hereby declare the nature of our invention for
"IMPROVEMENTS IN THRASHING MACHINES" and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
This Invention has for its object improvements in thrashing machines :-the
improvements are illustrated by the drawings annexed.
Figure 1 is a side view of a thrashing machine to which the several improve-
ments are applied. Figures 2. 3. 4 and 5 show other views of some of the parts.
The invention relates firstly to machines in which the two reciprocating parts
usually termed the top and bottom shoes are driven by eccentrics fixed on a
straight shaft there being two such eccentrics on either side of the machine
outside the framework. We form the eccentric straps in the manner shewn in
Figure 1.
A is the eccentric shaft B is one of the eccentric sheaves, there is a second
sheave immediately behind it and two similar sheaves on the other side of the
machine.
B is the upper part of the eccentric strap embracing the sheave B it is bolted
at 6 to the wooden connecting rod B' which serves to transmit the movement of
the eccentric to the lower shoe N. B' is the lower part of the same eccentric
strap, it is simply a cap confining the upper part B1 to the eccentric B.
C is the upper part of the eccentric strap actuating the upper shoe M. C³ is the
wooden connecting rod for this shoe.

page_text: The way in which the eccentric rods are secured to the shoes is hereinafter
described.
N' and N are hangers supporting the shoe N.
M³ M² and M³ are hangers belonging to the shoe M.
In some cases we make use of the eccentrics to give motion to the shakers as
patented by John Coulson N° 1827 in the year 1883. The eccentric straps B*
and C¹ then carry and actuate the shakers F and G. The strap is provided with a
horn. B* C* are the horns which are longer or shorter as may be required. The
horn receives the end of a round bar Fi or which is secured to a bracket Fª:
or fixed upon the shaker.
The bracket may be fixed upon two of the cross bars of the shaker as is shown
in Figures 3 or it may be bolted to the underside of one only of the cross bars as
in Figure 4. In either case the bar F¹ or G' has holes through it which receive
bolts to secure it to the bracket.
•
Another part of our invention relates to the means for attaching the eccentric
rods to the shoes. A cast iron bracket is provided it has a sole to take the end of
the eccentric rod. The bracket also has a socket in it in which a wrought iron bar
preferably flat and extending across the shoe from side to side is received. To this
bar the shoe is bolted. The same bracket is also preferably provided with another
lug to receive the spring hanger.
The bracket for the lower shoe is marked E it receives the end of the eccentric
god B³ upon a sole provided for it as the drawing indicates, it also has a socket for
the bar E¹ extending beneath the shoe and bolted to it; a lug also upon the bracket
serves for attaching the spring hanger Nº.
There is a similar bracket D in connection. with the upper shoe, its form differs
slightly from that of the bracket E, in this case the eccentric rod C³ is attached to
the under side of the sole upon the bracket.
In Figures 2 the brackets of the two forms are seen in plan.
Another part of the invention relates to the means for connecting the shakers
with the spring hangers at their ends next the beaters.
The shakers are fixed to bars H and J in the manner already described and as is
shown in Figure 4. K and L are the hangers. The connection between the bar
and the hanger is made by a clip shown by Figure 5, it is in two parts S and T
which when placed together and bolted through as the drawing indicates clip the
end of the bar attached to the shaker. The part S, also is provided with a surface
or sole against which the end of the hanger is placed and the parts are connected
by through bolts.
In some cases in place of supporting the shakers by spring hangers K and L we
arrange guide slots on the frame of the machine into which the ends of the bars H
and J are received.
Another part of the invention relates to means for stiffening the main frame of
the machine.
For this purpose ties O. P. and Q are employed, they are all connected at the top
in a bracket R fixed upon the top rail of the frame and at their lower ends they
are bolted at distances apart to the lower rail of the frame at O³ P³ and Q³, the
upper ends of the three bars are received and fixed into sockets on the bracket R.
The bracket R may be also provided with lugs K¹ and L' to which the hangers K
and L are bolted--it is so shown in the drawing.
When the frame is stiffened by the ties O. P. Q an upright member of the frame
which would otherwise be requisite is dispensed with and the eccentrics can
consequently be brought more closely to the sides.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is
1. The eccentric straps transmitting the motion of the eccentric to the shoe
each eccentric strap consisting of a top part bolted to the connecting rod and

page_text: embracing the eccentric on the upper side and a bottom part simply a cap bolted
to the top part and confining it to the eccentric sheave substantially as described.
2. The eccentric straps provided with horns connecting them with bars fixed
beneath the shakers substantially as described.
3. The spring connecting rods, placed outside the framing in combination with 5
the brackets by which they are attached to the shoes substantially as described.
4. The brackets connecting the eccentric rod with the shoe; having a sole to
receive the eccentric rod and also a socket for a bar fixed beneath the shoe
substantially as described.
5. The brackets for supporting the shakers with the clips connecting them with 1
the bars fixed transversely beneath the shakers substantially as described.
6. The brackets receiving the three bars stiffening the side frame of the
machine and with or without lugs for connecting the spring hangers supporting
the shakers.
7. The method of trussing the side frame of a thrashing machine with three bars 1
substantially as described,
8. The combination of shoes, shakers, and gear supporting and actuating the
same substantially as described.