Improvements in or connected with Threshing Machines.
Year: 1891

page_text: Date of Application, 22nd May, 1891.
Complete Specification Left, 22nd Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Threshing Machines.
I, HENRY WILLIAM GIBBS, of Bedford, in the County of Bedford, Superin-
tendent of Agricultural Implement Works, do hereby declare the nature of this
invention (a communication to me by ADOLFO SCHEPER FASSIO, of Lisbon, in
the Kingdom of Portugal, Engineer) to be as follows:-
This invention relates to threshing machines.
In threshing machines as at present constructed it is practically impossible to
prevent pieces of stone, metal, wood or other foreign substance, introduced with'
the straw into the machine, from passing through the same, and this is a serious
defect, especially in threshing machines with which are combined mechanism for
cutting, bruising trussing or baling the straw as it is delivered, for the reason
that the pieces of stone or the like are liable to damage or cause the breakage
of such mechanism.
to
Heretofore the only method of arresting such foreign substance in its course
through the machine, has been to stop the engine driving the same but this, owing
to the momentum of the fly-wheel and of the drum of the threshing machine, it is
difficult to do with sufficient quickness.
.
According to my invention I provide for arresting such foreign substance without
necessitating the stopping of the engine and threshing drum, and this I accomplish
by placing the shaking-mechanism of the threshing machine under the control of
the attendant, so that should he become aware of the passage of any foreign
substance into the drum he can, by a simple movement, stop the action of the
shaking mechanism and so prevent such foreign substance from being carried through
the machine and allow of its being removed. Suitable mechanism for effecting this
object comprises a clutch on the shaker driving-spindle engaging with the driving-
pulley and so arranged in conjunction with a lever that, when the latter is moved,
the clutch will be instantly disengaged from the driving-pulley, so that the
motion of the spindle is arrested almost immediately.
Dated the 22nd day of May 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London; Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Threshing Machines.
I, HENRY WILLIAM GIBBS, of Bedford, in the County of Belford, Superin-
tendent of Agricultural Implement Works, do hereby declare the nature of this
invention (a communication to ine by ADOLFO SCHEPER FASSIO, of Lisbon, in
the Kingdom of Portugal, Engineer), 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 to threshing machines.
In threshing machines as at; présent constructed it is practically impossible.to.
prevent pieces of stone, metal, wood or other foreign substance, introduced with the
straw into the machine, from passing through the same, and this is a serious defect,
especially in threshing machines, with which are combined mechanism for cutting,
bruising, trussing or, baling the, straw as it is delivered for the reason that the

page_text: pieces of stone or the like are liable to damage or cause breakage of such
mechanism.
Heretofore the only method of arresting such foreign substance in its course
through the machine has been to stop the engine or motor driving the same,
but this, owing to the momentum of the fly-wheel of such engine or
and of the drum of the threshing machine, it is difficult to do with sufficient.
quickness.
motor
- According to my invention I provide for arresting such foreign substance without
necessitating the stopping of the engine or motor and the threshing-drum, and
this I accomplish by placing the shaking-mechanism of the threshing machine under
the control of the attendant, so that should he become aware of the passage of any
foreign substance into the drum he can, by a simple movement, stop the action of
the shaking-mechanism and so prevent such foreign substance from being carried
through the machine and allow of its being removed. Suitable mechanism for
effecting this object comprises a clutch on the shaker-driving-spindle engaging with
the driving-pulley, and so arranged in conjunction with a lever that, when the
latter is moved, the clutch will be instantly disengaged from the driving-pulley, so
that the motion of the spindle is arrested almost immediately..
To enable my invention to be fully understood 1 will describe the same by
reference to the accompanying drawings, in which :—
Figure 1 is a side elevation; and,
Figure 2 a plan of a "Ruston and Proctor "threshing machine having the
improvements applied thereto; and,
Figures 3, 4 and 5 are a sectional side elevation, a sectional plan and a
sectional end elevation respectively of my improvements drawn to an enlarged
scale.
Figure 6 is a view of a detail.
Similar letters of reference indicate.corresponding parts in the several figures.
a, a indicate the shakers, and indicates the spindle for operating the same:
the said spindle being provided with eccentrics or cranks in a well known manner.
c is the pulley mounted upon the shaker-spindle and having motion communicated
to it from a pulley d on the drum-spindle eby means of a belt fin a well known
manner.
1
is a clutch by means of which the pulley is connected with and disconnected
from the shaker-spindle, the said clutch being connected to. the spindle 6 by a
feather and having lugs and slots designed to engage with corresponding slots and
lugs upon the boss of the driving-pulley, as shewn most clearly in Figures 4 and 5. It
will thus be obvious that when the clutch g is in engagement with the boss of the
pulley c, motion will be imparted to the shaker-spindle, whilst when the clutch is
out of engagement with the said boss the pulley can rotate independently of the
spindle, which latter remains 'stationary.
-
h is a lever carrying a strap i fitting into a groove in the clutch and surrounding
the same, the said lever being at its lower end pivotted at to the framing of the
machine and at the other end k in engagement with one arm of a bell-crank lever
in such a manner that the movement of the lever in one or the other direction will
cause the clutch to be engaged with or disengaged from the boss of the driving-
pulley; the other arm m of this bell-crank lever is connected to a rod n, which rod
is also connected to a lever o pivotted at p in such a position that it can be readily
grasped by the attendant feeding the machine, for instance as shewn in Figure 2, so
that in case any obstruction such as that hereinbefore inentioned is introduced into
the machine the attendant can at once stop the shakers by pulling the lever o
from the position shewn in dotted lines in Figure 3 to the position shewn in full
lines.
"
In order that the shakers can, in a case of necessity, be stopped by a person
upon the ground as well as by the attendant feeding the machine the rod n is
provided with an extension 7 to which is connected one end of a lever r, the other

page_text: end of the said lever being provided with a handles within reach of a person upon
the ground.
In order that when the shakers have been stopped they shall not be inadvertently
started, the lever is arranged at its lower end to slide in a guide t, in connection
with which a spring-catch is arranged; this spring-catch, as shewn in Figure 6,
is designed to yield automatically to the lever r when either the said lever or
the lever o is moved to stop the shakers, but the said lever cannot be moved to
re-start the shakers until the spring-catch has been sprung back out of the path
of the lever as will be readily understood.
In cases where a straw-trusser. having a safety cover the lifting of which for
oiling or other purposes causes the stopping of the trussing mechanism, is combined
with a threshing machine can if desired utilize the opening movement of the said
cover for operating mechanism such for instance as that described for stopping the
shakers so that no straw will be delivered to the trusser whilst the trussing
mechanism is at rest.
It is to be understood that this invention is not confined to any particular
construction of clutch mechanism as it is obvious that such may be varied to suit
different requirements.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. In a threshing machine arranging the driving-pulley for the shaker-shaft or
spindle in such a manner that it can be readily disengaged therefrom, substantially
as, and for the purpose, described.
2. In a threshing machine, the combination with the shaker-spindle of a driving-
pulley adapted to be engaged with and disengaged from the said spindle by means
of clutch-mechanism, substantially as described.
Dated tha 92nd day of Bobnary 1809
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.