Indicating Weight upon the Insertion of a Coin.
Year: 1887

page_text: Date of Application, 22nd June, 1887
Complete Left, 25th Feb., 1888
Complete Accepted, 6th Apr., 1888
Indicating Weight upon the Insertion of a Coin.
I, MATERNUS MARTINI, of Frankfort %- Main, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows :—
My invention relates to machines for automatically indicating weight upon the
insertion of a coin.
The said apparatus comprises one or more levers which are maintained in equili-
brium by one or more fixed counterweights.
The positions of the said levers, changing according to the load, will produce by
means of a draw rod various inclinations of an angle lever which movements are
transmitted to a hand or pointer connected with the latter, the said hand indicating
the weight of the load upon the table on a graduated scale.
The same result can be obtained by means of a rack in connection with the said
angle lever.
The rack engages with a pinion upon the axis of which the pointer is fixed so that
on the upward or downward motion of the rack the said pointer or hand swings to
one or the other side.
In order to obtain a supporting power of at least 150 kilogrammes a large turn of
the hand or pointer is necessary the length of the said hand or pointer will always be
abnormally great, and through the oscillatory and lateral deviations inaccuracies
cannot be obviated. Especially when the bridge load is removed, the falling back of
the counter weight into its position of rest after it has been in its highest position
causes the hand or pointer to be violently thrown back; so likewise when the load is
put upon the bridge the hand will for a considerable time swing to and fro before it
stops at one point.
To
remove these inconveniences or at least reduce them to a minimum, is the object
of the present improvements.
This is attained by slightly braking the hand, the braking although in principle
always the same, may be carried out in various constructions.
In one form of the said apparatus this braking is obtained by the hand or pointer
being provided with a slot within which is placed a roller.

page_text: A second roller turning with the first roler upon the same axis, WAS a sign
guide way.
The motion of the hand or pointer causes the second roller to move in the straight
guide from the right to the left, or vice versa, and the first roller will move up and
down in the said slot.
The hand or pointer is thereby guided, by which the violence of its oscillating
motions is nearly obviated.
Instead of the grooved guide-way a horizontal rack may be used with which
engages a pinion the shank of which is adapted to slide up and down in the slot in
the hand or pointer by which combination the same result is attained as with the
construction first described.
Or a segment guide may be used with which a roller pivotted to the hand or
pointer engages. By this combination of parts, in the same manner as with the
aforesaid constructions, the violent oscillating motions of the hand are decreased.
The segment guide can also be toothed, and in this case the roller must be replaced
by a pinion.
The same purpose is obtained by an oscillating pressing cylinder, the cylinder is
open in front, its bottom and its piston are however bored through and the latter is
provided with a ball valve.
When weighing, that is to say, when the hand passes from the left to the right no
pressing takes place but a straight-guiding, sliding motion in the cylinder.
When the band passes back to zero the piston is pushed in the cylinder from the
left to the right, and by the ball valve, which is pressed into the valve seat by the
compressed air, the opening provided in the piston is closed.
The air contained in the interior of the cylinder can only pass through the bore
provided in the cylinder bottom, and in the proportion as this takes place the back
motion of the hand or pointer to zero is more or less accelerated.
In order to enable the stream of air from the bore to be regulated a small cock
can be arranged at this point, by means of which the passage is enlarged or
diminished.
To obviate lateral vacillations of the hand a simple slot guide is provided.
In another form the hand consists of two parts; loosely connected at their ends, the
lower piece having a slot, and the upper piece or pointer being and forming a lever of
the first kind.
Besides the advantage that in this construction the motion of the hand is more of
the turning than the swinging kind, therefore very quiet and accurate, it has the
advantage that in it the form of the graduated scale is more favourable than in the
aforesaid constructions, inasmuch as the smaller radius effects a larger circumference
with the same length of chord, which is of great advantage for the scale.
The above described hand mechanism is connected by a lever to the table balance
by means of suitable suspending devices.
If the balances above described are to be employed for automatically weighing
persons, they are provided with money-receiving devices which also form part of
the present application.
In one form of the money receiving device a channel of elongated quadrangular
section designed for putting in the money so constructed that only the proper coin
can be received into it. For this purpose it is bent and at this point provided at its
lower side with an opening.
When smaller coins are thrown in, they fall through the opening into a receptacle
whilst a coin of the proper size is kept in the channel by the projecting edges of the
opening and falls down through the latter.
On leaving the channel below, the coin falls upon a operating lever and presses
this down by its gravity in connection with the force of the fall.
The motion of the lever is then transmitted by the lower crank disc and lower
drawing rod to an upper crank disc and from this by the upper drawing rod through
a short lever fixed on a horizontal shaft to a small crank disc also fixed upon said
shaft.

page_text: From the small crank disc projects a small pin which is situated between carrier
pins arranged on a bolt supported so as to be able to slide to and fro.
The end of the said bolt projecting from a bearing piece is before the hand or
pointer and keeps the same in position.
If now the small crank disc by reason of its connection by the horizontal shaft,
short lever, the upper drawing rod, upper crank disc, the lower drawing rod, and the
lower crank disc, with the operating lever on the money falling in front upon the
latter, turns from the left to the right, it draws back the bolt by means of the pin on
the small crank disc between the carrier pins on the bolt the hand or pointer is
therefore now liberated and makes the turn by which the weight of the load is
indicated upon the graduated scale. On the load being removed from the bridge, all
the above named parts are brought back to their original position by a counterweight
arranged on the lower crank disc.
On turning the small crank disc from the right to the left the bolt is of course
again slid forward to be immediately afterwards forced back again by the hand or
pointer as it strikes the bolt the said bolt being made a little inclined for that
purpose.
But when the hand or pointer has passed the bolt, the latter slides forward again
and keeps the hand fixed in its normal position.
Instead of crank discs simple levers of the first order, which are pivotted in their
centres may be used in this arrangement.
In a modification of this construction by using contact-closing device, a disengage-
ment of a vertical rack is effected, and consequently the hand or pointer is caused to
strike against a projection.
The construction of the money channel and the operating lever is similar to that
above described.
By the counter weight on the lower crank disc the operating lever is kept in its
normal position.
From the battery pass conducting wires, one of which is connected with a contact
point whilst the other extends to the electromagnet.
The latter is then connected with the lower crank disc by a conducting wiro.
If now the operating lever is pressed down by the coin thrown into the channel it
comes in contact with the contact point and closes the circuit which has up to now
been interrupted between the crank lower disc and the contact point.
From the electromagnet becoming magnetic in consequence of the making of the
circuit, the bolt engaging with the rack and retaining the same in its position is
attracted so that it leaves the teeth of the rack.
The latter having thereby been liberated follows the pull exerted upon the balance-
table drawing rod and the angular lever owing to the load of the balance, and operates
the pinion engaging with the vertical rack it being compelled to make a partial
rotation.
The hand or pointer firmly fixed with the pinion upon the same axis turns
correspondingly and indicates upon the graduated scale the weight of the load.
When the load is removed again from the balance, the rack, by reason of its
connection with the angular lever is pressed upwards by the weight connected to said
angular lever.
After the falling down of the coin from the operating lever the latter has already
passed upwards by reason of its connection with the counter weight whereby the
interruption of the current is effected so that the bolt is no longer attracted by the
electromagnet.
The bolt carried back to its original position by a weak spring surrounding it,
and it now engages with a notch in the vertical rack when the said rack ascends,
consequently the mechanisin will pass into its normal position.
The same operation is repeated every time the balance
loaded.
In another modification the pinion and rack are balanced that is to say the bridge
load does not exert upon these parts any deleterious action through frictional resistances,
which is of great importance for the correct and easy operation of the bolt.

page_text: Tue arrangement is as follows:
The vertical rack guided above by rollers and below in the guide piece rests with
a hardened steel cone loosely in a steel bearing arranged in a suitable place on the
angular lever.
By the balance-table drawing rod the angular lever is in connection with the
balance proper so that it is drawn downwards on the balance being loaded.
The vertical rack thereby loses its supporting point, and caused by its own weight
follows the motion of the angular lever whereby furthermore the pinnion which
gears with it is set in rotation. Upon the same axis as the pinion are the two hands
or pointers the one serving to indicate the weight upon the scale whilst the other
arranged behind the latter keeps the hand mechanism in inactivity until a
disengagement of the same takes place by throwing the coin into the slit.
The disengagement is exerted by the receding motion of the bolt before which the
operating hand is placed.
The arrangement of the bolt and that of the entire disengaging mechanism is the
same as that above described.
When the balance is unloaded the angular lever is brought back by the counter-
weight to its original position the vertical rack being then also pressed upwards, in
consequence of which the pinion and hand likewise return to the position they
previously occupied.
Dated this 92nd day of Juno 1007
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Indicating Weight upon the Insertion of a Coin.
I, MATERNUS MARTINI, of Frankfort - Main, in the Empire of Germany, Manu-
facturer, 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 weighing machines the mechanism of which is designed
to be automatically liberated upon the insertion of a coin or coins.
My said invention is illustrated in the accompanying drawings, the figures of
which are hereinafter referred to.
In the constructions represented in Figures 1, 2, 9 and 10 the positions of
equilibrium are obtained by different inclinations of one or more levers by one or
more fixed counter-weights A, a.
The positions of the said levers, changing according to the load, will produce by
means of a draw rod b various inclinations of an angle lever B which movements are
transmitted to a hand or pointer C connected with the latter, the said hand indicating
the weight of the load upon the table on an arc D provided with a graduated scale.
In the construction represented in Figures 3 and 4, the same result can be
obtained by means of a rack Z in connection with the said angle lever B and there-
fore following the motion of the latter. The rack engages with a pinion X upon
the axis of which the pointer C is fixed, so that on the upward or downward motion
of the rack Z the said pointer or hand swings to one or the other side.
In the construction represented in Figures 1 and 2 where in order to obtain a
supporting power of at least 150 kilogrammes, a large turn of the hand or pointer C
is necessary the length of the said hand or pointer will always be abnormally great
and through the oscillatory and lateral deviations inaccuracies cannot be obviated.
Especially when the bridge load is removed, the falling back of the counter weight a
to its position of rest after it has been in its highest position causes the hand or
pointer C to be violently thrown back; so likewise when the load is put upon the
bridge the hand will for a considerable time swing to and fro before it stops at one
point.
To remove these inconveniences or at least reduce them to a minimum, is the object
of the present improvements.
This is attained by slightly braking the hand, the braking, although in principle
always the same, may be carried out in various constructions.
In the construction represented in Figures 1 and 2 this braking is obtained by the
hand or pointers C being provided at d with a slot within which is placed a roller e.
A secoud roller e turning with the roller e' upon the same axis works in a straight
guide way c. The motion of the hand or pointer causes the roller e to move in the
straight guide c from the right to the left, or vice versa, and the roller e¹ will move

page_text: up and down in the said slot d. The hand or pointer is thereby guided, by which
the violence of its oscillating motions is nearly obviated.
Figure 5 shows a straight guide through a horizontal rack with which engages
a pinion the shank of which is adapted to slide up and down in the slot in the
hand or pointer C, by which combination the same result is attained as with the
construction first described.
Figure 6 represents a segment guide with a roller k pivoted to the hand or
pointer C. By this combination of parts, in the same manner as with the aforesaid
constructions, the violent oscillating inotions of the hand are decreased.
The segment guide can also be toothed, and in this case the roller K must be
replaced by a pinion.
The same purpose is obtained in Figure by an oscillating pressing cylinder Z
which is pivoted at m, the cylinder is open in front, its bottom and its piston are
however bored through and the latter is provided with a ball valve n.
When weighing, that is to say, when the hand passes from the left to the right, no
pressing takes place but a straight-guiding, sliding motion in the cylinder. When
the hand passes back to zero the piston is pushed in the cylinder from the left to
the right, and by the ball valve, which is pressed into the valve seat by the com-
pressed air, the opening provided in the piston is closed.
The air contained in the interior of the cylinder can only escape through the
bore p provided in the cylinder bottom, and in the proportion as this takes place the
back motion of the hand or pointer C to zero is more or less accelerated.
In order to enable the stream of air from the bore p to be regulated, a small cock
can be arranged at this point, by means of which the passage is enlarged or
diminished. To obviate lateral vacillations of the hand a simple slot guide y is
provided. In Figure 8, the hand consists of two parts; the piece C having a slot,
and the piece or pointer C₁ being pivoted at and forming a lever of the first kind.
Besides the advantage that in this construction the motion of the hand is more of
the turning than the swinging kind, therefore very quiet and accurate, it has the
advantage that in it the form of the graduated scale D is more favourable than in
the aforesaid constructions, inasmuch as the smaller radius effects a larger circum-
ference with the same length of chord, which is of great advantage for the scale.
Figure 9 shows this construction as applied to an upper scale table balance
in which by means of suitable suspending devices the lever F. is in connection with
the hand or pointer mechanism C.
If the balances represented in Figures 1 and 2 and also in Figures 3 and 4 are to
be employed for automatically weighing persons, they are provided with money-
receiving devices which also form part of the present application.
In Figures 1 and 2 the channel G of elongated quadrangular section designed for
putting in the money, is so constructed that only the proper coin can be received
into it. For this purpose it is bent and at this point (Figure 1) provided at its
lower side with an opening 7: When smaller coins are thrown in, they fall through
the opening into a receptacle s whilst a coin of the proper size is kept in the channel
by the projecting edges of the opening and falls down through the latter. On
leaving the channel G below, the coin falls upon a lever H and presses this down by
its gravity in connection with the force of the fall.
The motion of the lever H is then transmitted by the lower crank disc H' and
drawing rod K to the crank disc L and from this by the drawing rod K' and the
lever M fixed on a horizontal shaft N to a small crank disc O also fixed upon said
shaft. From the crank disc () projects a small pin P which is situated between
the carrier pins QQ arranged on a bolt R supported so as to be able to slide to
and fro.
The end of the said bolt R projecting from a bearing piece is before the hand or
pointer C (Figure 1) and keeps the same in the position represented in Figure 2. If
now the crank disc O by reason of its connection by the horizontal shaft N, lever M,
the drawing rod K¹ crank dise 1, draw rod K and the crank disc H with the operating
lever H, on the money falling in front upon the latter, turns from the left to the right,

page_text: it draws back the bolt R by means of the pin P between the carrier pins QQ¹. The
hand or pointer Cis therefore now liberated and makes a turn by which the weight of
the load is indicated upon the graduated scale D. On the load being removed from
the bridge, all the above-named parts are brought back to their original position by a
counterweight arranged on the crank disc H', and the lever and disc O now
occupy again the position represented in Figures 1 and 2.
J
On turning the disc O from the right to the left the bolt R is of course again slid
forward to be immediately afterwards forced back again by the hand or pointer Cas
it strikes the bolt R the said bolt being made a little inclined as shown in Figure 1 for
that purpose. When the hand or pointer has passed the bolt, the latter slides
forward again and keeps the hand fixed again in the position shown in Figure 2.
Instead of crank discs simple levers of the first order, which are pivotted in their
middle may be used in this arrangement.
In Figures 3 and 4 a modification of this construction is represented in which by
using a contact-closing device, a disengagement of the vertical rack Z is effected, and
consequently the hand or pointer C is caused to swing. The construction of the money
channel G and the operating lever H is similar to that above described. By the
counter weight J on the crank disc H¹ the operating lever H is ordinarily kept in the
position represented in Figure 4.
From the battery consisting of the elements SS1 pass conducting wires, one of
which is connected with a contact point Q2, whilst the other extends to the electro-
magnet 00. The latter is then again connected with the crank disc H by a
conducting wire.
If now the operating lever H is pressed down by the coin thrown
into the channel G, it comes in contact with the contact point Q and closes the circuit
which has up to now been interrupted between the crank disc H' and the contact
point Q.
From the electromagnet becoming magnetic in consequence of the making of the
circuit, the bolt R engaging with the rack and retaining the same in its position is
attracted so that it leaves the teeth of the rack. The latter, having thereby been
liberated, follows the pull exerted upon the draw rod and lever B, owing to the load
of the balance, and operates the pinion X engaging with the rack it being compelled to
make a partial rotation.
The hand or pointer C firmly fixed with the pinion upon the same axis turns corre-
spondingly and indicates upon the graduated scale the weight of the load.
When the load is removed again from the balance, the rack, by reason of its
connection with the angular lever B, is pressed upwards by the weight a. After the
falling down of the coin from the operating lever H, the latter has already passed
upwards by reason of its connection with the counter weight J, whereby the interrup-
tion of the current is effected so that the bolt R is no longer attracted by the electro
magnet. The bolt R is carried back to its original position by a weak spring
surrounding it, and it now engages when the rack Z ascends, with the notch again,
consequently the mechanism will pass into its normal position. The same operation
is repeated every time the balance is loaded. In the construction represented in
Figures 11 and 12, the pinion and rack are balanced that is to say the table load does
not exert upon these parts deleterious action through frictional resistance, which is of
great importance for the correct and easy operation of the bolt R.
The arrangement is as follows:-The vertical rack Z guided above by rollers ar and
below in the guide piece y rests with a hardened steel cone loosely in a steel bearing
arranged in a suitable place on the lever B. By the balance-table drawing rod 1) the
lever B is in connection with the balance proper so that it is drawn downwards on the
balance being loaded. The vertical rack Z thereby loses its supporting point, and by
its own weight follows the motion of the lever B, whereby furthermore the pinion
which gears with it is set in rotation. Upon the same axis as the pinion are the two
lands or pointers C and C¹, the hand C serving to indicate the weight upon the
scale whilst the hand (" arranged behind the latter keeps the hand mechanism in
inactivity until a disengagement of the same takes place by placing the coin into the

page_text: slit. The disengagement is effected by the receding motion of the bolt R before which
the hand C is placed.
The arrangement of the bolt R and that of the entire disengaging mechanism is the
same as that above described with reference to Figures 1 and 2.
When the balance is unloaded the lever B is brought back by the counter weight a
to its original position, the vertical rack Z being then also pressed upwards, in con-
sequence of which the pinion and hand likewise return to the position they previously
occupied.
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
First. In machines for automatically indicating weight a hand or pointer which is
acted upon by a brake imechanism, whether the latter is based upon friction as in
Figures 1, 2, 3, 4, 5, 6, 8, 11 and 12, or constructed after the manner of an air brake
as in Figure 7.
Second. The combination of the hand or pointer with a disengaging device for the
same, comprising the lever H which, pressed down by a coin of definite size placed in the
receiving channel G, causes, either by transmitting this motion by mechanical means,
the bolt R to move back and thus à disengagement of the hand or pointer C as in
Figures 1, 2, 11, and 12, or, by the use of an electric battery, effects by its descending
motion, the making of contact of an interrupted circuit, in consequence of which the
bolt R is attracted by the electromagnet, and thereby the rack Z acting upon the hand
is disengaged, as in Figures 3 and 4.
у года.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.