Improvements in Grain Weighing Machinery.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Grain Weighing Machinery.
I, HENRY RICHARDSON, of 166, Oxhill Road, Handsworth, Birmingham, Gentle-
man, do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in automatic grain weighing machinery
and its object is to construct a simpler method of weighing grain and other
materials into sacks. My invention comprises a simplified shutter arrangement
for regulating the supply of the grain into the sack, a simplified cut off gear
which causes the shutter gear to operate at such times when the desired amount
of grain has entered the sack; and a simplified arrangement called a relieving
gear for taking at intervals the load of the dead weights and thus permit the
sack to be removed from the sack holder, which is used to hold the sack distended.
In the construction of a machine made in accordance with my invention I
arrange a weighing beam with weights in a scale pan at one end, and a sack
holder or other suitable contrivance at the other end. Above the sack holder I
place a shutter or slide controlling the flow of the grain from an ordinary supply
hopper above the machine. The shutter is controlled by the movement of the
weigh beam in the following manner, when the empty sack is placed upon the
sack holder and the relieving gear put into operation, the shutter which is con-
nected with the beam by an open link, is caused to open by the return of the
weights, and remains open until the greater part of the grain to be weighed has
entered the sack, whereupon the weight of the shutter still pressing through the
link upon
the beam causes the latter to descend and allow the shutter to close until
a small dribble only, continues to descend, at this moment a small trigger or catch
gear holds the shutter open leaving the beam free to descend when the exact
amount has entered the sack, whereupon a projection of the beam upsets the
trigger or catch gear and entirely cuts off the flow, leaving the sack balancing
in the ordinary way. A compensating lever is used to assist this last movement.
For weighing flour, powdered materials and the like I use two gates in my
shutter gear, which are both opened by the link which is connected to both by a
fcrked arm, the link working in a plane to allow the two gates to open and close
together.
Instead of the trigger mechanism toggle gear and other mechanical equivalent
may be used.
Doted thie 28th day of January 1897

page_text: I, HENRY RICHARDSON, of 166, Oxhill Road, Handsworth, in the County of
Staffordshire, Gentleman, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-,
My invention relates to improvements in automatic grain weighing machinery.
The object of this invention is to obtain a simpler method of weighing grain and
other materials into sacks or the like. My invention is illustrated in the
accompanying drawings in which
Fig. 1 shews a side elevation of the machine.
Fig. 2 shews a front elevation of the same.
Fig. 3 is an enlarged view of the trigger gear.
Fig. 4 is an enlarged view of the relieving gear.
A is the main frame of the machine which is preferably made of wood. Bis
the beam on which is suspended the weight plate C and the bag-holding attach-
ment, D, which counterbalances the said weight plate and consists of an attach-
ment of wool-carding instituted for the purpose of holding the sack distended,
full particulars of which I have given in my Specification No. 13925-96.
E is the shoot through which the grain is supplied and is fitted with a gate or
shutter gear, F, which regulates the amount of grain passing to be weighed
through the opening of the shoot E.
G is the connecting link which allows the gate F to work in conjunction with
the movement of the beam B (see Fig. 3).
His the trigger catch fixed to the frame which intercepts the movement of the
gate, and at the time when it is desirable to reduce the flow of grain entering the
machine to a fine dribble for the purpose of ensuring accurate results (see
Fig. 3).
K is the movable weight stop, which prevents the return of the weights
until such times as it is desirable to allow the scale to perform the weighing
operation, and is fitted with a lever K¹ and locking gear K/2 and K³ which allow
it to be placed in and out of action.
L is the arrangement for making the machine portable and consists of handle L'
having a cam attachment L/2 which engages with the surface L³ when it is raised
to the horizontal position and causes the wheel L/, to press on the ground and thus
raises the leg of the frame.
The method of weighing is as follows;-
-
The necessary weights having been placed on the weight plate C, the lever K¹
having raised the stop K the said weights are thus prevented from descending.
The sack is then attached to the holder and the grain having been supplied
to the shoot E, the lever K¹ is moved so that the pressure of the weights may be
exerted in opening the gate F through the intermediary of the link G. The
grain now commences to fall until the weight of the gate supported by and press-
ing on the beam B causes the latter to descend and at the same time the gate
itself diminishes the opening and reduces the supply, the gate continues to close
until the projection FI (see Fig. 3) comes in contact with the surface H¹ of the
trigger H, and its further movement is arrested.
14
The dribble now formed continues to descend until the weighing is completed
and the beam which has been at rest, again commences to descend until the peg B¹
strikes the trigger H withdrawing it from the projection F and thus allowing
the gate to completely cut off the supply.
:

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. The improved weighing apparatus constructed & operating as described.
2. In an automatic weighing machine, the combination with the cut-off gear
of the relieving lever K' and the weight stop K, to keep the gate F closed or to
open it when desirable substantially as described.
In an automatic weighing machine, the combination of the trigger H with
the link G, and the gate F, substantially as described.
Dated this Twenty-eighth day of October, Eighteen hundred and ninety-
seven.