IMPROVED MACHINERY OR APPARATUS FOR SELFACTINGLY MEASURING AND WEIGHING GRAIN AND OTHER LIKE PRODUCTS
Year: 1879

page_text: LETTERS PATENT to Walter Brierley, of Halifax, in the County of York, Con-
sulting Engineer and Patent Agent, for the Invention of "IMPROVED
MACHINERY OR APPARATUS FOR SELFACTINGLY MEASURING AND WEIGHING
GRAIN AND OTHER LIKE PRODUCTS." A communication from abroad by
Alexander Kaiser, of München, Kingdom of Bavaria, Empire of Germany,
PROVISIONAL SPECIFICATION left by the said Walter Brierley at the
Office of the Commissioners of Patents on the 15th April 1879.
WALTER BRIERLEY, of Halifax, in the County of York, Consulting Engineer and
Patent Agent.
"IMPROVED MACHINERY OR APPARATUS FOR SELFACTINGLY
MEASURING AND WEIGHING GRAIN AND OTHER LIKE PRODUCTS." A communica-
tion from abroad by Alexander Kaiser, of München, Kingdom of Bavaria, Empire
of Germany.
In self acting weighing machines according to this my Invention,
I distinguish the scale proper, which must meet the general conditions of the
ordinary scales and the peculiar mechanisms which make the weighing operation
selfacting.
The scale proper comprises two scale beam arms and axles connecting them;
centres are fitted to the axle and are in the same plane with other centres fitted to
the scale beam arms.
The main axle is attached to frames and fitted with centres.
The principal centre bearings are attached to the beam arms,
The weighing hopper hanging free on the centres,
A counterweight hanging free on centres.
The principal centre bearings are attached to the scale beams so that any
appliance for protection against dust can be dispensed with, and are of such a
construction that the position of the revolving axle cannot be altered.
The peculiar mechanisms are the following
The inlet mechanism.
The outlet mechanism.
The compensator.

page_text: A stud fixed to the frame,
The outlet flap having counterweight and arm and a stud fixed to the frame.
The compensator consists of a weighted lever swinging on an axle, and con-
nected with the inlet angle lever by a double link lever.
The action of the machine is as follows:-The weighing hopper is in its highest
position when the supply of the materials can take place through the whole breadth
of the inlet opening.
The scale has reached the horizontal position where a short stop takes place
during which the materials can merely fall through small constant openings into
the weighing hopper, and kernels, stones, or other coarse bodies which might happen
to be amongst the materials cannot alter the size of the openings u when getting.
between the closing edges as the brushes merely recede in the respective places.
It will be further observed that the inlet link lever can no longer act upon the stud
as the inlet angle lever rests upon the supporting lever, and the latter is carried by a
supporting surface, so that the scale proper in this moment is subject to no other
resistance but the friction to be overcome on the surface.
As soon as the materials falling into the weighing hopper are equal to a given
weight, the weighing hopper descends, the supporting hook suddenly loses it hold,
and the inlet augle lever its support, so that the inlet link can again act upon the
stud, the consequence of which is a sudden and complete closure of the inlet.
When the inlet is closed, force brought into action by the effects of the compen-
sator and the weighted inlet slide lever causes,―
The opening of the weighing hoppers outlet,
The passing over of the scale into position,
The holding of the scale in position till the weighing hopper has been entirely
discharged, aided by the weight of the materials lying on the flap at this moment,
The steady motion of the scale in passing from one position into the other,
especially from position into position, and the short stop which takes place during
the equilibrium.
The limiting stud annuls the effect of the compensator and thus prevent jerks.
The weighing machine just described may be without the supporting hook, and
the outlet flap being replaced by a second hopper with regulating plate.
There is also a controlling appliance with which the accuracy of the machine
can be controlled from time to time without the aid of an ordinary scale. This
appliance consists of the following parts:-
A controlling weight,
A suspension shaft,
A spindle with nut,
An additional weight supported by a string which is fastened to the spindle,
A precision weight,
A circular slide held by a rod,
And a stopping appliance.
The controlling weight correspond approximately with the weight of one charge

page_text: The operation is as follows:-
The stop catch is so turned that the scale is stopped in position and retained there
after discharging, a slide is there brought forward so that it closes completely the
inlet opening hereafter; the stop catch is turned in such a position as to release the
scale so that it can return into position, in which position a fresh supply of materials
is prevented by the slide. In this position the scale can be tested by the controlling
additional and precision weights in the manner already described. After the test
is finished the slide is withdrawn so that the machine can resume weighing.
Should the test show that the limit of precision has been surpassed this can be
remedied by altering the position of a weight.
There is a self acting stop motion, by means of which the scale is stopped auto-
matically after a certain number of discharges determined before hand. For this
purpose the dials of an ordinary indicator are provided with sections opposite and a
lever working on a stud is provided with projections corresponding with the above
mentioned sections in such a manner that when the indicator indicates 0 these pro-
jections are forced into the corresponding sections or notches by means of a spring,
and hereby stop the further motion of the indicator, and in consequence also of the
scale.
If, for example, in starting the machine, the indicator is set to number backwards
at every discharge, and arrives at 0 at the 320th discharge, when the indicator stops
the scale,
A perfect self acting measuring machine is secured by,―
Dividing the weighing hopper of the weighing machine into two communicating
compartments, applying a measuring slide to the upper compartment, which slide is
provided with an arm so moved by the thumb that the communication between the
two compartments formed by brushes is entirely open in one position and closed in
the other position, and
Providing the compartment with adjusting cylinders,
Making the compensator weight in two parts and so proportioning a removeable
part that it can exercise an influence on the scale proportionally to that surplus of a
charge which is each time retained in the compartment.
A perfect self acting weighing machine is again secured by displacing the thumb
fastening the measuring slide to the hopper and adding the weight to the com-
pensator.
:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Walter Brierley in the Great Seal Patent Office on the 14th October
1879.
"
WALTER BRIERLEY, of Halifax, in the County of York, Consulting Engineer and
Patent Agent.
IMPROVED MACHINERY OR APPARATUS FOR SELFACTINGLY
MEASURING AND WEIGHING GRAIN AND OTHER LIKE PRODUCTS." A communica-
tion from abroad by Alexander Kaiser, of Munchen, Kingdom of Bavaria, Empire
of Germany, Engineer.
In selfactingly weighing machines, according to this my Invention, I distinguish
the scale proper, which must meet the general conditions of the ordinary scales, and
the peculiar mechanisms, which make the weighing operation self acting.
The apparatus of this my Invention is represented by the annexed Drawing. The
scale proper is shewn in Fig. 1, 2, 3, 4, 5, & 6, and comprises, 1, the scale beam
arms A and A'; 2, the axles d, d², and f, f¹, connecting them; 2, the centres g and
g' fitted to the axle d, d¹, and being in the same plane with the other centres / and
h¹ fitted to the scale beam arms; 4, the main axle i, i, attached to the frames H
and H¹, and fitted with the centres and ; 5, the principal centre bearings m and
m attached to the beam arms; 6, the weighing hopper B hanging free on the
centres h and h¹; 7, the counterweight M hanging free on the centres g and g¹.
The principal centre bearings are attached to the scale beams, so that any appliance
for protection against dust can be dispensed with, and are of such a construction
that the position of the revolving axle cannot be altered. The peculiar mechanism
are the following:-1, the inlet mechanism; 2, the outlet mechanism; 3, the com-
pensator. The inlet mechanism consists of the following parts:-1, the weighted
circular slide L provided with outcuts u, and edging the ends of the inlet hopper D,
formed by brushes; 2, the inlet slide arm N fixed on the axle n, n', of the circular
slide; 3, the inlet angle lever T provided with the studs t and v, and swinging on
the stud g fastened to the frame H; 4, the supporting lever V suspended on the axle
w fixed to the frame ends, and provided with an arm x, a counterweight g, and
the supporting surfaces 01 and 011; 5, the surface O fixed to the scale beam A
vertically to the main centre line; 6, the inlet link Y swiveling on the stud t;
and, 7, the stud Z being fixed to the scale beam. The outlet mechanism con-
sists of, 1, the weighing hopper outlet D¹ surrounded by brushes; and, 2, the
outlet circular slide L¹ with peculiarly formed arms; 3, the stud W fixed to the
frame; 4, outlet flap B' having counterweight and arm N¹; 5, the stud W fixed to
the frame. The compensator consists of a weighted lever C swinging on the axle
n, n¹, and connected with the inlet angle lever T by a double link lever y². The
action of the machine is as follows:-In Figure 3, position I., the weighing hopper
is in its highest position, when the supply of the materials can take place through
the whole breadth of the inlet opening; in Fig. 1, position II., the scale has reached
the horizontal position, where a short stop or swell takes place, during which the
materials can merely fall through small constant openings u into the weighing
hopper; and Figure 7 shows how kernels, stones, or other coarse bodies which might
happen to be amongst the materials cannot alter the size of the openings u when
getting between the closing edges, as the brushes merely recede in the respective places.
It will be further observed that in position II. the inlet link lever Y can no longer
act upon the stud Z, as the inlet angle lever T rests upon the supporting lever V,
and the latter is carried by the supporting surface O, so the scale proper in this
moment is subject to no other resistance but the friction to be overcome on the
surface O. A soon as the materials falling into the weighing hopper are equal to a
given weight G the weighing hopper descends, the supporting hook V suddenly loses
its hold O, and the inlet angle lever Tits hold O¹, so that the inletlink y can again
act upon the stud Z, the consequence of which is a sudden and complete closure of

page_text: the inlet, as will be understood by Figure 4, position III. Figure 8 represents
how kernels, stones, etc., cannot prevent the complete closure of the inlet as the
brushes recede in the respective places. When the inlet is closed the force brought
into action by the effects of the compensator Co, and the weighted inlet slide
lever E causes, 1, the opening of the weighing hoppers outlet D¹; 2, the passing
over of the scale into position IV., till the weighing hopper has been entirely
discharged, aided by the materials lying on the flap B₁ at this moment; 4, the
steady motion of the scale in passing from one position into the other, especially
from position I. into position II., and the short stop or dwell which takes
place during the equilibrium. The limiting stud Wannuls the effect of the
compensator C in position I. and IV., and thus prevents jerks. Fig. 9 repre-
sents the weighing machine just described, without the supporting hook V,
and the outlet flap B¹ being replaced by a second hopper B₁ with regulating
plate B"; Figures 9 and 10 represents a controlling appliance, with which the
accuracy of the machine can be controlled from time to time without the aid of
an ordinary scale. This appliance consists of the following parts:-1, a con-
trolling weight g 3; 2, the suspension shaft h 3, h¹ 3; 3, the spindle 3, with the
nut 6; 4, the additional weight p 3 supported by a string, which is fastened to
the spindle m 3; 5, the percision weight p 3; 6, a circular slide R 3 held by the
rod 3, 7, and a stopping appliance s 3. The controlling weight g 3 corresponds
approximately with the weight of one charge of the weighing hopper, so that by.
letting the same down on the shaft h 31, h 3¹, by means of a nut 13 the scale is
brought down with empty hopper into position, Fig. 10, but cannot pass beyond
this position. The controlling weight g 3, together with additional weight p3,
correspond with the weight of one charge, less the percision weight, must be equal
to twice the force of percision. As long as the scale does not leave the horizontal
position, being under the influence of the controlling and additional weights, but
does so by adding the percision weight, the accuracy of the scale is within the
limit of the valour of the percision. The action of the percision weight can be
watched from the outside through an opening in the framing covered with glass.
The following parts serve to test the machine:-A slide R 3 and a hand wheel t 3
on a spindle i 3, the nut u 3 to move up and down, and the small grooved spindle
The operation is as follows:-The stop catch 83 is so turned that the
scale is stopped in position IV., and retained here after discharging; the slide K 3
is then brought forward, so that it closes completely the inlet opening D; hereafter
the stop catch s 3 is turned in such a position as to release the scale, so that it can
return in position I., in which position a fresh supply of materials is prevented by
the slide K 3. In this position the scale can be tested by the controlling, additional,
and percision weights in the manner already described. After the test is finished the
slide K 3 is withdrawn, so that the machine can resume weighing. Should the test
show that the limit of precision has been surpassed this can be remedied by altering
the position of the weight G¹. There is a selfacting stop motion represented by
Figures 12 and 13, by means of which the scale is stopped automatically after a
certain number of discharges determined beforehand. For this purpose the dials
of an ordinary indicator are provided with sections opposite to 0 and the lever a
working on the stud c is provided with projections corresponding with the above
mentioned sections in such a manner that when the indicator indicates 0, these
projections are forced into the corresponding sections or notches by means of a
spring and thereby stop the further motion of the indicator and in consequence
also of the scale whilst in position IV. If for example in starting the machine the
indicator is set to number 320, the latter is made to move one number backwards
at every discharge and arrives at 0 at the 320th discharge when the indicator stops
the scale. As it will be understood by Fig. 11, a perfect selfacting measuring
machine is secured by dividing the weighing hopper B of the weighing into two
communicating compartments B and B 2, applying a measuring slide Ⓡ 4 to the
upper compartment B, which slide is provided with an arm C 4 so moved by the
thumb d4 that the communication between the two compartments formed by
m 3.

page_text: brushes is entirely open in the positions I. and II. and closed in the other positions,
and providing the compartment B 2 with adjusting cylinders a 4 making the
compensator weight c in two parts, and so proportioning the removable part c¹ that
it can exercise an influence on the scale proportionally to that surplus of a charge
which is each time retained in the compartment B. A perfect selfacting weighing
machine is again secured by displacing the thumb d 4, fastening the measuring
slide K 4 to the hopper, and adding the weight c¹ to the compensator.
Having thus fully described the nature and particulars of the said Invention,
what I claim is,-
Firstly. The selfacting appliances as represented by Figs. 1, 2, 3, 4, 5, 6, and 7
together as a complete construction.
Secondly. The selfacting measuring appliances represented by Fig. 11 together
as a complete construction.
Thirdly. The inlet mechanism consisting of a, a weighted circular slide provided
with outcuts and passing close under the edges of brushes surrounding the inlet
opening; b, a lever fixed on the axle of the circular slide, acting against a supporting
stud or angle fastened to the scale beam; c, a supporting surface moving up and
down with the scale beam, and having a tangential position to the main axle of the
scale.
Fourthly. The supporting hook which enables to reduce the resistance which the
scale has to overcome in the horizontal position.
Fifthly. The outlet mechanism consisting of a, a circular slide provided with an
arm of special form and passing close under the edges of brushes surrounding the
outlet opening of the weighing hopper; b, a stud fixed to the frame; the regulating
flap or c, a circular slide, an under hopper, and a regulating plate.
Sixthly. The compensator consisting of a weighted lever and a double link.
Seventhly. The controlling appliance described.
Eightly. Self acting stop motion described.
In witness whereof, I, the said Walter Brierley, have hereunto set my hand
and seal, this Eleventh day of October, in the year of our Lord One thou-
sand eight hundred seventy nine.
WALTER BRIERLEY. (L.S.)