Improvements in Dial Indicating Steelyards.
Year: 1892

page_text: Date of Application, 15th June, 1892
Complete Specification Left, 17th Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Dial Indicating Steelyards.
We, HENRY JOHNSON AVERY, of the firm of W. and T. Avery Limited,
Weighing Machine Manufacturers, Digbeth, in the City of Birmingham, and
ALFRED WILLIAM BROWN, of 63 Sampson Road, Sparkbrook, in the County of
Warwick, Draughtsman, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to dial indicating steelyards and it consists of a method of
operating indicating figures on a dial in such manner that the figures or signs are
operated by the movement of the steelyard poise or poises. The object of the
invention is to so connect the indicating cylinders or discs, with the poises, that
the accuracy of weighing is not impaired, and yet the weight indicated by the
ordinary poises, adjusted in the usual manner, is shown on a revolving dial or
index, by suitable figures at any desired elevation above the steelyard and of
considerable size, so that they are distinctly visible at a distant view.
In one mode of carrying the invention into effect in a steelyard indicating
hundredweights, quarters and pounds for example, we arrange three spindles, each
spindle carrying a cylinder with suitable figures, which figures show through
suitable apertures in a case. On the spindles we place toothed wheels having the
teeth spaced at considerable width, and we attach to or form with the poises,
When
projecting toothed racks which gear loosely into the said toothed wheels.
the poises are adjusted exactly as in the ordinary mode of weighing, each poise is
brought to a definite notch or division, and its rack rotates a toothed wheel and its
numbered cylinder to exhibit a corresponding figure. Each spindle carries a star
or cam wheel, having cam or incline teeth into which a roller carried by a lever is
pressed or forced by a spring or weight, or the main toothed wheels actuated by
the racks may be used for the same purpose. These incline teeth are so spaced
relatively to the numbered cylinder, carried on the same or a connected spindle,
that when the roller is pressed home between any two teeth, then the corre-
sponding number stands fairly in the opposing aperture. At the same time as the
roller presses home between the incline teeth, the wide teeth on the spindle
operated by the poise rack are caused to move clear of contact with the rack
teeth, and so the steelyard is left perfectly free from friction in order that the
weighing may be made with unimpaired accuracy. In this manner the movement
of each poise by its rack causes the indicating cylinder or disc to rotate, and the
action of the spring or weight-impelled-roller on the incline teeth, completes the
movement and leaves the necessary number or letter fully displayed, and the teeth
of the rack quite clear of the teeth of the wheel.
A sliding or a lever-cam piece with or without friction roller may be applied
instead of the arrangement herein before described. The cam or wedge tooth
wheel may also be cut with cam surfaces or teeth at any intervals required.
Dated this 14th day of June 1892.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Dial Indicating Steelyards.
We, HENRY JOHNSON AVERY, of the firm of W. and T. Avery Limited,
Weighing Machine Manufacturers, Digbeth, in the City of Birmingham, and
ALFRED WILLIAM BROWN, of 68 Sampson Road, Sparkbrook, in the County of
Warwick, Draughtsman, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
Our invention relates to dial indicating steelyards and it consists of a method of
operating indicating figures on a dial, in such manner that the figures or signs are
operated by the movement of the steelyard poise or poises.
The object of the invention is to so connect the indicating cylinders, or discs,
with the poises that the accuracy of weighing is not impaired and yet the weight
indicated by the ordinary poises, adjusted in the usual manner, is shown on a
revolving dial or index by suitable figures at any desired elevation above the
steelyard, and of considerable size so that they are distinctly visible at a distant
view.
Referring to the five sheets of drawings accompanying
:--
Figure 1 is an external elevation of a weighing machine to which our invention
has been applied.
Figure 2 is a sectional elevation looking from the back of the machine, part
of the case being removed to show the mechanism.
Figure 3 is a transverse section on the line ab Figure 2 with the side of the
case removed.
Figure 4 is a sectional plan on the line cd Figure 2, showing the three poises
and three indicating spindles.
Figure 5 is a sectional elevation on a larger scale than Figures 1, 2 and 3 but
corresponding to the mechanism shown in the lower part of Figure 2.
Figure 6 is a transverse section corresponding to Figure 3 but also on a larger
scale.
Figure 7 is a plan of the printing mechanism.
Figure 8 is a plan showing the star wheel arrangement.
Figures 1, 2, 3 and 4 are drawn to one scale and Figures 5, 6, 7 and 8 to
another.
In one mode of carrying the invention into effect in a steelyard indicating
hundredweights, quarters and pounds or stones for example as shown upon the
drawings, we arrange three spindles, respectively A B and C, each spindle carrying
a cylinder as A B C with suitable figures which figures show through suitable
apertures in a dial plate N forming part of a case. On the spindles we place
toothed wheels A2 B2 C2 having the teeth placed at considerable width and we
attach to or form with the three sliding poises DE F, projecting toothed
racks D E F which gear loosely into the said toothed wheels. In the
arrangement shown in the drawings only the wheels A2 B2 are keyed to their
respective spindles A and B and the wheel C2 is keyed to a sleeve C4 working
freely on the spindle A but the spindle C is controlled by C2 as accurately as
if C2 were keyed to it as the motion of C is transmitted to C by the gear
wheels H H and H2. The gear wheel H is attached to the sleeve C+ and it gears
accurately into H' which is loose on the spindle B so that C is driven by H2 keyed
to it and gearing into H. When the poises are adjusted exactly as in the ordinary
mode of weighing, each poise D, E, or F, is brought to a definite notch or division
on the steelyard G G G2 and its rack D' E' or rotates a toothed wheel A² B'
or C2 and causes its numbered cylinder A' B' C¹ to exhibit a corresponding figure.
Each spindle A B and C carries a star or cam wheel A3 B3 and C³ having cam or
incline teeth into which a roller carried by a lever III is pressed or forced by a

page_text: spring K K K or a weight, or the main toothed wheels A² B² C² actuated by the
racks may be used for the same purpose; we prefer, however, the separate star
wheels. These incline teeth in the star wheels A³ B³ C³ are so placed relatively
to the numbered cylinder A¹ B' or C¹ carried on the same or a connected spindle,
that when the roller is pressed home between any two teeth then the corresponding
number stands fairly in the opposing aperture, in the dial plate N. At the same time
as the roller presses home between the said incline teeth, the wide teeth on either
of the spindles operated by either of the poise racks are caused to move clear
of contact with the rack teeth, and so the steelyard G is left perfectly free from
friction in order that the weighing may be made with unimpaired accuracy. In
this manner the movement of each poise by its rack causes the indicating
cylinder A B or C¹ or equivalent disc to rotate and the action of the spring or
weight-impelled-roller on the incline teeth completes the movement and leaves the
necessary number or letter fully displayed and the teeth of the rack quite clear of
the teeth of the wheel.
A sliding or a lever-cam piece with or without friction roller may be applied
instead of the arrangement herein before described. The cam or wedge tooth
wheel may also be cut with cam surfaces or teeth at any intervals required.
For the purpose of taking an indelible record of each weighing, we affix to one
or other of the vertical spindle (as shown in the drawing to the vertical spindle A)
discs or drums 001 02 carrying upon their peripheries suitable figures which
may be arranged to print in ink or by indenting a card as may be desired. The
three printing discs are arranged on one axis in order to print on a card in line and
the discs are actuated by suitable gearing so that each is controlled by the
movement of one spindle. As shown in the drawings the disc O is keyed on the
spindle A and indicates the position of the cylinder A'.
The disc O¹ is loose on the spindle A and is actuated from the spindle B by the
toothed wheel Q gearing into a similar toothed wheel attached to the disc O¹.
The disc is attached to the sleeve C which controls the position of the
spindle C and so the discs 00' 02 respectively represent the cylinders A' B' C'
and the poises D E F.
When a weighing has been effected an impression is taken on a ticket in the usual
way. Figure 7 shows the printing mechanism in plan and as it is of a well known
type it requires no further description.
The tickets are contained in a suitable receptacle P.
For the purpose of inking the figures in their revolution the discs roll in contact
with suitable inking rollers.
To enable the position of the steelyard G to be readily observed from the front
of the machine, a link L is provided connecting between a lever M and the steel-
yard. The lever M is pivoted at L' and carries a disc M₁ which disc M' indicates
by its appearance at either of three holes shown in front of the case under the main
dial plate (see Figure 1) whether the steelyard is in equilibrium, or the load
on at the moment is light or heavy in relation to the numbers indicated by the
cylinders.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In dial indicating steelyards the method of operating the indicating figures
from the movement of a poise by an attached rack the said rack engaging wide
spaced teeth in a wheel actuating a spindle, which spindle is so arranged in
connection with a star or cam wheel and spring or weighted iever or sliding piece
that when the poise is set at any determined dividing mark on the steelyard then
the said lever or sliding piece forces into an inclined recess in the star or cam wheel
and further rotates the spindle, bringing the indicating figure into full view on the
dial and at the same time removing the teeth in the toothed wheel from contact with

page_text: the teeth in the rack so as to allow the steelyard to balance with the greatest
accuracy free from frictional contact, substantially as herein before described.
2. The arrangement of dial indicating steelyard having:-spindles as A B C
with indicating cylinders as A¹ B' C'; poises as DEF connected to racks
as D E F; wide spaced toothed wheels as A2 B2 C2 engaging the said racks and
operating the said spindles; star wheels as A³ B³ C³ with spring or weight levers
or slides as III; substantially as and for the purposes herein before described
reference being had to Figures 1, 2, 3, 4, 5, 6, and 8 of the accompanying
drawings.
3. The dial indicating steelyard claimed in the preceding claims in combination
with the self-registering ticket printing mechanism hereinbefore described and
illustrated in the drawings.
4. The arrangement and construction of dial indicating steelyards hereinbefore
described and illustrated in the accompanying drawings.
Dated this 12th day of April 1893.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicants.