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Патент USA US2404562

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July 23, 1946.’
Filed Jan. 6, 1938
6 Sheets-Sheet l
128 124
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Jul? 23,1943‘;
Filed Jan. 6, 1938
e Sheets-Sheet 2
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RAYMOND 8. H047‘
July 23, 1946- ‘
Filed Jan. 6, 1938
6 Sheets-Sheet 3
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July 23, 1946.
Filed Jan. 6, 1958
6 Sheets-‘Sheet 4
July. 23, 1946.
Filed Jan.v 6, 1958
6 Sheets-Sheet 5
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July 23, 1946.
Filed Jan. 6. 1958
6 Sheets-Sheet 6’
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Patented July 23, 1946
Lewis G. Barnes, Rutland, Vt., and Raymond B.
Holt, Los Angeles, Calif., assignors to The Howe
Scale Company, Rutland,- Vt., a corporation of
Application January 6, 1938, Serial‘No'. 183,630
7 Claims. (01. zen-5.4)
This invention relates to weighing scales of
the kind in which a member movable in propor
tion to the displacement of the scale beam is uti
lized to perform work, such as the printing of an
indication of the weight of the load on the scale.
One object of the present invention is a scale
in which is utilized the passage of light through
substantially light transmitting areas arranged
in predetermined relation corresponding to loads
on the scale on a member movable proportion 10
of Figure 5 and looking in the direction of the
Figure 8 is an enlarged view of the weight indi
cating chart;
Figure 9 is a schematic‘ view on an enlarged
scale showing the manner of laying out the chart
of this invention;
Figure 10 is a wiring diagram;
Figure 11 shows a modi?ed chart of this in
vention; and
Figure 12 is a fragmentary view showing the
ately to the scale beam to initiate. or effect move
ment of a member performing work.
adjustable mounting for the chart._
‘ ,
Referring ?rst to Figures 1 and 3, the shaft 22
carries a cam 24, connected by a’ ?exible tape ‘26
which the movement of a light responsive de
vice, which movement is wholly independent of 15 to the steel yard rod 28 of the scale whereby,
for each motion of the beam 29, a corresponding
the scale mechanism, actuat'es instrumentalities
Another object of the invention is a scale in
proportioned motion of the cam 24, and conse
quently of the shaft 22, is had. Theshaft 22
to perform work, such as printing mechanism.
A further object of the invention is to provide
electrically controlled and/or actuated instru
mentalities to effect movement of the light re
carries a counterweight 21 and a pendulum 3|].
20 Extending in a generally horizontal direction (as
viewed) vfrom the shaft 22, is an arm 32'. On
sponsive device and/or instrumentalities perform
the arm 32 is adjustably mounted the end 34 of
ing work.
an adjusting bracket having a downwardly e1;
The invention also has to do with restraining
tending arm’ portion 38. A frame member 40,
instrumentalities for the weighing mechanism
whereby movement is prevented while the chart 25 carrying a chart 4| ispivoted to the arm 34, as
is being scanned by the light responsive element.
at 39 (Figure 12), and is adjustable with respect
to that arm, as by the set screws 42 in the arm
The invention also seeks a weighing scale of
38 bearing against the chart frame 40 ‘whereby
the character described which is practical from
the indicia 44 depicted on the chart may be ad
the standpoint of manufacture and use.
justedllto proper position so that the scale 46
These and other objects of the invention and
thereon is, at all points. on exactly the same ra..
the means for their attainment will be more ap
parent from the following detailed description
dius from‘ the axis of )the shaft 22. _ That is, so
that all graduations ‘43 of’ the scale 46 are at‘ ex
taken in connection with the accompanying
actly the vsame distance from the, center of the
drawings illustrating one embodiment by which
the invention may be realized, and in which:
- shaft 22. It willthus be seenthat as the shaft
Figure 1 is a view in front elevation showing
22 is rocked in a clockwise direction when a load
is on» the scale, that the chart 4| swings upwardly
a weighing scale to which the invention is ap
in a clockwise'direction bring-ingthe graduations
Figure 2 is a fragmentary view, partly in sec
43 andnumerical indications “thereof on the
tion, showing details of braking devices for the 40 scale 46 past a ?xed lens48 which projects the
reading on a viewing screen 41. The numerals
scale mechanism;
onchart 41 are transparent and conveniently in
Figure 3 is a view in front elevation, showing
verted so that a simple lens system may be used
the chart scanning mechanism and associated
to project graduations ‘43 and numerical indi
cations 44 in non-inverted position on screen 41
- parts in the position they assume when no load
is on the scale;
Figure 4 is a fragmentary view showing'the
as shown in Figures 1 and 4. A chart’ and scale
weight indication as projected on the screen;
Figure 5 is a plan view of structure shown in
is ‘shown, described and claimed in‘ Patentv No.
1,357,731. 7 Depending from the’supporting surface
Figure 3;
‘ Figure 6 is a transverse sectional view of de
tails of construction taken in the plane indicated
by the line 6-6 of Figure 5 and looking in the
direction of the arrows;
Figure 7 is a fragmentary view in side eleva
tlon taken/in the plane indicated by the line- ‘l—'! 55
or frame member [8; which may be the" top of' a
casing I9, is- a bracket 4-9 on which‘ is pivoted,
a ‘frame having two depending parallel arms 52,
53' between which extends a pair of spaced hori
zontal guide rods 54 and 55‘.v By means of the
set'escrewsi5lv, the frame 52;, _53 is adjusted‘so that
the various mechanisms carried by the guideways
or rods 54, 55 may be moved or be positioned in
a true ‘horizontal plane, relatively speaking, to
coincide with horizontal indicia (lines, etc.) on
the chart 4I. As shown, the projecting lens 48
is adjustably mounted, as by a frame member
56, on these rods 54 and 55.
Referring‘ now‘also to Figure 3, a traveller or
curvilinear surface III‘I, Figure 3, and, at a cer'—
tain point in its movement, enter a slot I58. The
carrier frame member I09 is connected, as by a
link I II], with the armature I I I of an electromag
net H2.
When the scale beam comes to rest, it is de
sirable to hold the chart 4I against movement so
that the correct indication of the weight may be
carriage 58 is slidably supported on the rods 54
obtained. To this end, a chart brake I I4-—I2'I is
and 55. A forwardly extending bracket 59 there
on adjustably carries a housing 55’ containing 10 provided, Figures 2 and 5. Fixed on the shaft
22 is a chart brake sector or vane II4 conven
(Figure 5) a source of light 52 and an optical
iently taking the form of a segment of a circle
lens system BI within the tubular housing
and of a size su?icient to be engaged at any posi
thereof adapted to project a beam of light on the
tion of the chart frame 45 at either of its extreme
chart 4I carried in the frame III] and through a
registering light transmitting: portion thereof 15 positions of movement. When the scale beam
comes to rest, this brake vane H4 is adapted to
upon a light responsive circuit closing device,
be engaged and held against movement, there
such as a photo-electric cell 64, referred, to here
by holding the shaft 22 against movement, and
in as a light responsive switch means and which
with it, of course, the chart 4|. As shown in Fig
is contained within the housing, indicated gen
erally at 55 and adjustably carried on a bracket 20 ure 2, a lever I I5 is pivoted intermediate its ends,
as at II 3, conveniently to the frame or casing
G'I extending rearwardl'y from and also mounted
member I8 so as to move in a horizontal .plane
on the carriage 58. The cross-sectional shape of
and is connected at one end I I6, as by a flexible
this beam of light corresponds to the cross-sec
link I II, with the link I II] or some associated part
tional shape of the smallest aperture or light
transmitting portion of the chart III, as will here 25 of the structure which is moved by the electro
magnet H2. On each side of the brake surface
inafter be described.
H4 are brackets IIB which conveniently depend
The carriage is adjustably and pivotally con
from and are rigidly secured to the frame mem
nected, as at 55, to a link or connecting rod ‘III
ber I8. Each bracket H8 is provided with a
connected to the upper end of a vertically ex
tending work performing member shown as lever 30 transverse bore I I9, I20, the bore portion I20 be
ing of greater diameter than bore portion I I9. In
arm ‘I2 pivoted on the frame of the machine, the
bore portion I I9 is a ?xed sleeve I2 I. . In bore por
lever ‘I2 moving about its pivot in the plane of
tion I20 is the cylindrical head I22 of a turnable
movement of- the carriage 58. Lever ‘I2 may be
sleeve I23, the end I24 of which extends out
utilized to actuate any suitable form of printing
mechanism to print a permanent record of the 35 wardly of the bearing I29. The cylindrical head
I22, and the turnable sleeve I23 are formed with
weight of the load on the scale, as will be under
stood. One such printing mechanism is shown, v a continuous bore I25 within which is disposed
the rod like shank I26 of the disk~like chart
described and claimed in the copending applica
brake shoe I2'I which is freely rotatable and ad
tion Serial Number 188,251 ?led February 2, 1938.
The carriage 55 being motor propelled and be 40 justably positioned, as. by the set screws I28
seated in the end portion I24 of the turnable
ing without mechanical connection with the del
sleeve I22. The brake shoes I2? are adapted to
icate scale mechanism, may be utilized to per
engage the chart brake vane H4 when the tubu
form the work of operating other mechanisms.
lar turnable rods I24 are rotated in opposite di
The upper end of lever “I2 is also connected, as
by a pivoted link 75, to a crank disk ‘I8, as at ‘I5, 45 rections. These turnable sleeves rotate freely in
the bearings I32 and are so constructed that the
the crank disk ‘I8 being ?xed on a rotatable drive
disk-like brake shoes I2'I are clearly out of con
shaft 85 adapted to be clutched to and de
tact with‘ the brake surface I I4 in inoperative
clutched from the motor 32 (Figure 5). The
position so as not to offer any impedance to. the
shaft is suitably supported, as from the frame
member I8, by downwardly depending brackets 50 free movement of the shaft 22 and chart 4|. The
turnable sleeves I23 are rotated in opposite di
84 and is clutched, as by a friction disc ‘86, to the
rections from the rotatable lever I I5 by arms I35
worm wheel 'Iil driven from a worm 88 on the
to Which the respective turnable sleeves I23 are
shaft of motor 82. Keyed to the shaft 85 and in
?xedly connected, as by set screws I2I, in ad
fact a part of the friction disc 85, is a locking de
vice comprising a collar 89 provided on its pe 55 justed position, and which arms I30 are also piv
otally connected, at their other ends, to the
riphery with a plurality of axially extending slots
lever I I5. The sleeves I24 are advanced to bring
50 adapted to ‘be selectively engaged by a re
the brake shoes I21 into contact with brake sec
straining means illustrated as, a knife-like end
tor I I4 by cam devices, shown in this instance as
aI of a locking lever BI, 92, 54 which is pivoted as
at 95 on the frame member or bracket 54. The 60 spherical members I32 disposed Within compan
ion recesses one of which, say I33, is formed in
forward end 94 of the locking lever III, 92, 94 is
the ?xed sleeve I2! and the companion recess
connected, as by a link 9", with an outwardly
I34 in the turnable head I22. A spring I35 nor—
extending arm 93 carried on a collar Q‘I freely
mally tends to draw head I22 toward ?xedv sleeve
rotatable on the shaft 85. This collar 91' also
has a carrier frame member comprising an up 65 IEI so that the balls I32 lie in the receptacle
formed by the cooperating recesses I33, I34.
wardly extending arm 98 which carries a down
wardly extending portion IIII'I disposed to one side
of the vertical plane of the crank disk ‘I8; On
the crank disk 78 is a lug I52 having a cam sur
When a load is on the scale and the scale beam
comes to rest, the operator closes the motor
switch I55’ (Figure 10) completing the circuit
70 through the electromagnet I I2 and thereby draw
ing the armature III_ inwardly or to the left, as
viewed in Figure 3. This movement of the arma
I85 supported for reciprocation in the carrier
ture draws the link I I1 thereby swinging the lever
frame member 98, I50 and normally urged down
II5 about its pivot to turn the arms I3Iland the
wardlygbya spring IIII. The upper end of the
'rod- carries a tooth I06 adapted to-ride over- a 75 sleeves I24 and cause the heads I22 to turn.. As
face we adapted to be engaged by a correspond
ing cam surface I04 on the end of plunger rod
the heads I22 turn,.the balls I32 being held in the
recesses I33, the recesses I34 are moved past
the balls until portions on one side of the re
cesses ride up on the ball thereby causing the
heads I22 to be moved toward the brake vane
sector H4 and causes them to bring the brake
shoes I21 in frictional engagement with the
displaced or in echelon with respect, to theade
jacent subdivision, say I46, and is de?ned by the
radial lines de?ning the adjacent unit subdivi
sion on the scale,
Thus, there are nine such
light transmitting areas I48, I49, etc. correspond
ing to the nine subdivisions of the scale say from
zero to ten or from ?fty to sixty, a light ray pass
ing through such subdivision, say I45, repre
brake vane I i-.~, thereby holding the shaft 22 and
sents the numeral 5 in the weight 155 pounds in
the chart carried thereby in the position to which
it has been moved by the movement of the scale 10 the illustrated example. Obviously, there is one
of these series I4I-I49 for each of the “tens,”
beam. Any instrumentality for retaining the
that is, one series between one and ten, a second
chart in the position assumed by it when the
series between ten and twenty and so on. There
scale is balanced by the load may be availed of,
are also a plurality of series of light transmitting
so long as the braking instrumentalities assume
their chart-retaining position without moving the 15 areas I5I, I52, I53, I54, I55, I56, I51, I58 and
I59 representing the numerals in the second or
chart from its exact weight indicating position.
Movement of the armature III also draws the
link Ill‘) to the left, as viewed, until the detent
IDS enters the locking recess IeB in the curvi
linear surface IS‘I, the detent Iil? entering the
recess under the influence of the coil spring act
ing on the rod H35 in a downward direction. At
this time, the cam surface IE4 of the rod IE5 is
free of the lug IdZ on the crank disk ‘I8 so that
tens column. In the illustrated embodiment that
numeral is 5. The second light transmitting
associated clutch mechanism is free to move
when driven by the motor 8'2, The end 9I of the
sented in the same way and cover an area repre
area I52 represents the numeral 2 in the sec
ond column of the weight and so on, as before,
for nine successive light transmitting areas. The
next elongated light transmitting area IBI rep
resents the ?rst numeral in the third column of
the weight, as before, and the adjacent light
the rod IE5 is permitted to move downwardly to 25 transmitting "area I62 represents the numeral 2
etc. There would, of course, be nine successive
permit the latchingr movement of the detent into
areas I6I-9 to represent the hundreds from 100
the recess IE3. At this time also the shaft 80 is
to 900 in the third column representing the
locked into position by the end ill of locking lever
weight. It will be noted that another series of
engaging a slot $9 in the toothed collar 89.
transmitting areas may be shown on the
Movement of the arm is!) and plunger rod I05
chart and-represent the numeral I in the next ad
in a counter-clockwise direction, as viewed in
jacent or fourth column, 1, e., the thousands col
Figure 3, brings with it the collar 97, to which it
and so on depending upon the capacity of
is attached, and this movement of the collar 9'!
the scale. On the extreme left, is a row of gradu~
depresses the end 84 of locking lever _9?., thereby
releasing the locking device 95), 9!. The toothed 35 ations I'II representing, on the chart of Figure 8,
one-half pound graduations. These are repre
collar being now released, the shaft 86 and its
senting one-half of a successive unit light trans
mitting area, i. e., there would be two light trans
locking lever 92, when raised, also serves as a
switch actuating member closing a switch I38 40 mitting areas I‘II for each unit light transmit»
ting area I4I, etc. To recapitulate, a broken line
(Figure 7) which energizes the motor 82 from the
H3 has been drawn radially through the one
main supply line. The motor drives the shaft 8%
?fty-?ve pound graduation of the scale.
in a clockwise direction, as viewed in Figure 3,
It passes through areas ISI (one hundred), I55
through the worm 88 and worm wheel 81 and
friction disc 85 thereby rotating the crank disk 13 45 (?fty) and I45 (?ve) giving the reading one
hundred and ?fty-?ve pounds.
also in a clockwise direction, and, through link ‘I5
Referring to Figure 9, the light transmitting
moving the lever ‘I2 to the right, as viewed, and
areas of the chart are laid out in the following
also through the link ‘Ill, commencing the
manner: First the subdivisions 43 are laid out,
traverse of the carriage 53 along the rods 54-55,
and across the weight indicating chart 4I which 50 on an extended scale, on the arc of a circle, the
center of which is represented at I15 in Figure 9.
has successive areas differing from other adja
subdivisions 43 have, obviously, a predeter
cent areas in their degree of opacity and is
mined width, and the actual arcuate distance be
illustrated as a sector-shaped opaque member
tween corresponding edges of successive gradua
having light transmitting areas and whereof the
tions will be represented by the unit of weight
axis formed by the intersection of all radial ele
and be defined anywhere on the chart by the ra
ments is the axis of rotation of the frame 40.
dial lines coinciding with these edges. For exam
Conveniently, along one side, is an arcuate scale
this may be the area between the radial lines
which is represented by the line 46. A fragmen
I" and I18. At suitable radial distances from
tary portion of this scale is shown magni?ed in
Figure 8, to show the subdivisions or graduations 60 the center I15, arcs, such as I19 and I80, are
drawn to define areas of suitable radial length,
43 which represent units of weight and with
nine for each series so that the light transmit
which are associated the numerical indications
ting areas are arranged in staggered formation or
4.4 of the weight represented by the respective
echelon and are separated and distinct from one
graduations. Near the left hand periphery of
another whereby the light ray travelling along the
the chart, as viewed, are a plurality of series of 65
path I13 will only intercept those areas corre
light transmitting areas representing, for in
sponding to the figures representing the weight of
stance, units of weight. One such series of units
load on the scale.
is indicated on the chart as MI, I42, I43, I44,
I45, I43, I41, I48 and I49. Each unit light trans
mitting area represents a unit of weight, for in
stance, pounds, and corresponds to a graduation
43 on the scale.
It is of a width in a circumfer
ential direction, de?ned by radial lines de?ning
a unit subdivision on the scale. It will be noted
that each light transmitting area, say I45, is
The operation-of the apparatus of this inven
70 tion has been described in connection with the
description of details of the mechanism up to
the point when the carriage 58 commences its
traverse toward the right, as viewed in Figure 3.
Let it be assumed for the purpose of illustration
75 that the load on the scale weighs one hundred
and,?fty-?ve pounds. The indicia or numeral
one hundred ?fty-?ve is thus brought in register
with the hairline 45, as shown in Figure 4. Also
in register with the hairline is the graduation of
the scale. The graduation 43 and numerical in
dication 44 are, of course, light transmitting and
since the light ray from the lamp passes through
them, they are thrown on the screen.
initial position through the instrumentality of the
force of the spring WI and the coacting cam sur
faces I03 and I04. This rotating movement also
permits the release of the cooperating clutch
members so that the worm wheel 81, which car
ries the clutch member co-acting with the clutch
member 30, is free to rotate with respect to the
The switch
shaft 80 and the shaft 80 and its associated parts
are not affected by the further rotation of the
I36’ is then manually closed, closing the circuit
through motor 82 ‘and scanning device 60-65 10 motor 82 in coming to a stop, the respective cam
then commences its travel across the chart in a
surfaces I03, I04 riding easily over one another,
horizontal line including the hairline, as will be
Movement of the arm I00 carries the collar 91
about the shaft 80 and causes the lever 02 to rock
to cause the engagement of the knife edge 9| with
understood, in this instance, along the line I13
of Figure 8. At this time also the light trans
mitting areas I45, I55 and IOI also intercept the
horizontal line I13 including the hairline. Thus,
as the light ray from light source 60 travels along
one of the grooves 00 in the collar 89. This oc
curs substantially instantaneously so that the
crank disc ‘I8 is stopped in its movement promptly.
Movement of the arm 02 into braking position
with respect to the drum 89 moves the end 9i
away from the spring contacts I38, permitting
these contacts to open and to interrupt the cir
cuit through the motor 82 whereby the motor 02
the line I13, it passes over opaque areas of the
chart 4| until it reaches the light transmitting
area I45 which is the ?fth area in the staggered
areas shown in Figure 9. The light ray is able to
pass through this area I45 and fall upon the light
responsive circuit closing device 64 to energize
a relay I82, for instance, and complete circuits
is deenergized. Interrupting the circuits through
the contacts I38 also interrupts the circuit pre
I83 (Figure 10) by which printing or other mech 25 paratory to the next cycle of movement of the
anism is actuated to record or print the numeral
work performing member ‘I2. Also the return of
the lever ‘I2 returns the printing mechanism to
original position coincident with the return or
the carriage 58 to its original position.
5. In the illustrated embodiment, an amplifying
device I85 of any suitable kind is included in the
circuit comprising the light responsive switching
device 64 and the relay I02. The light ray from
lamp 60 then passes on (due to the continuation
of the movement of the carriage 58) across the
opaque surface of the chart until it reaches the
light transmitting area I55. It will be under
stood that the area I55, for instance, is of a 35
dimension circumferentially to be traversed by
the light ray in its travel along any of the paths
In some situations it may be desirable to pro
vide an appreciable interval of time in the move—
ment of the light responsive device between the
time that the light ray travels across that area
of the chart occupied by the patterns designed
to complete a circuit through instrumentalities
I effecting the printing of a ?gure in the units col
umn and the time when the light responsive de
intercepting any one of the areas I4I-I49 because
each one of these units I-9 is in the “?fty” range,
vice travels across that area of the chart occupied
a hundreds graduation and represents, in the il
lustration here given, the one hundreds area.
column must be energized or rendered operative
in order to print the ?gure in the tens column.
by the pattern controlling the printing of ?gures
in‘ this instance ?fty-?ve, of the weight indica 40 in the tens column. It will be appreciated that,
tion one ?fty-?ve. Again, the light responsive
whether the printing is done mechanically or by
circuit closing device 64 is energized to complete
electrically actuated instrumentalities, the de
the circuits as before to initiate, say, the print
vices which effect the printing of the units must
ing operation. The light ray then continues its
be deenergized or rendered inoperative after the
travel along the horizontal path I13‘ until it in
printing operation is completed and then the in
tercepts the light transmitting area IGI which is
strumentalities effecting the printing in the tens
Again, the light ray passes through the area I6I
The same holds true as respects the time ele
to fall on the light responsive device 64 to again 50 ment between the instrumentalities of the tens
initiate a further operation. It is to be noted
column and the instrumentalities effecting the
that the hundred area I6I extends in a circum
ferential direction a distance suf?cient to be
printing in the hundreds column and so on.
further consideration is the desirability of pro
crossed by the light ray in its path through any
viding for a delay in the actuation of the photo
one of the nine “tens” areas I5I to I59 as well as 55 electric circuit closing device or its equivalent to
any one area of the nine series of areas I4I-I40.
allow for incorrect timing of the various opera
Obviously where no Weight is recorded in the
tions due to mechanical wear of the parts. In
units or tens columns as, for instance, where the
Figure 11, a chart is illustrated, the respective
load on the scale weighed one hundred pounds,
areas of which are determined in the same way
the light ray passes between the light transmit 60 as that described in connection with Figures 8
ting areas I4I to I49 and I5I to I50, i. e., on rel
and 9 and like reference characters are a?ixed
atively opaque areas of the chart during this por
to corresponding areas. Assume, therefore, that
tion of its movement until it falls upon the light
the area I45 in Figure 11 corresponds to the area
transmitting area I6 I.
I45 in Figure 8 and will affect the photo-electric
The carriage 58 having completed its stroke
cell to cause it to close the circuit. This element
corresponding to dead center position of the
is de?ned as before by imaginary radial lines
crank 15, a cam member 246 on carriage 58 ?rst
coinciding with corresponding edges of succes
opens leaf spring contacts 258 thereby deenergiz
sive scale graduations representing the ?fth unit
ing the circuits I83 of the printing mechanism
of weight between the one hundred ?ftieth and
and then commences its return movement. At, 70 one hundred sixtieth graduation 43 on the scale.
or just prior to, its return to initial position, the
In other words, this area I45 subtends the an
lug I02 on the crank disk ‘I8 strikes the rod I05
gle which is subtended by the subdivision on the
raising the tooth I05 out of the recess I00 and
scale with which the pointer will coincide when
thereby moving the lower end of the rod I05with
a load of one hundred ?fty-?ve pounds is on
‘sufficient force'to cause it to move back to its
the scale. Similarly the area I55 is de?ned by
the imaginary radial lines coinciding with corre
sponding edges of the one hundred ?ftieth and
one hundred sixtieth graduation on the scale.
In other words, the area I55 subtends the angle
which is subtended by that subdivision on the 1
scale over which the pointer will travel as the
load on the scale changes from one hundred
?fty pounds to one hundred ?fty-nine pounds
mentalities selected for traversing the light re
sponsive means with respect to the chart and
in the motor means therefor as well as in the
work effected thereby. ‘No limitation is intended
by the phraseology ofthe foregoing description
or illustrations in the accompanying drawings,
except as indicated in the appended claims.
What is claimed iszv ‘
. ‘
1. In a weighing scale 'having'a beam,'the com
Similarly, the area I65, only a fragment of 510 bination with a shaft, the angular rotation of
whichis proportional to the displacement of the
which is shown in Figure 11, is de?ned by radial
scale beam, of a chart movable proportionally to
lines passing through corresponding edges-of the
the movement of the shaft, said chart being
one hundredth and two hundredth graduations
formed with relatively substantially light trans
on the scale 43 and subtends the same angle as
that over which the pointer travels in recording 15 mitting areas and substantially opaque areas ar
ranged in predetermined relation corresponding
a load on the scale between one hundred pounds
to loads‘onlthe ‘scale, a carriage, rods to guide
and one hundred ninety-nine pounds.
said carriage in a ?xed path across the face of
As before, the unit areas are arranged in ech
the chart, light responsive circuit closing means
elon between successive arcs at varying distances
from the center. The nine areas, of which the 20 and alight source movable with the carriage and
area I45 is the middle area, lie between the arcs
such as indicated for area I45 at I19, I80, frag
ments of which are shown at the right hand end
of Figure 11, and between which arcs are nu
merals from one to nine representing the nine 25
disposed respectively in paths of movement upon
opposite sides of said chart, a work performing
member, a drive shaft, operative connections/be
tween the drive shaft and the carriageand the
work performing member, ‘a motor, operative con
nections between the motor-and the drive shaft, a
motor switch, and restraining means for the drive
shaft closing the motor switch when the restrain
unit areas. As before, the area I45 lies between
the arcs IE9 and I88. A second group of spaces
de?ned by arcs is also illustrated for the nine
ing means is disengaged.
tens area of which the area I55 is the ?fth area
2. In a weighing scale having a beam, a chart
and lies between the arcs between which the nu 30
movable proportionally to the movement of the
meral 5 of the second group appears. It will be
noted that the space between the arcs 396 and
3E‘! is not numbered, the ninth space being on
the outside of the are 305 and the ‘first space
of the tens group on the other side of this space.
The reference character 308 is given to this un
occupied space. It will be noted that this arcu
ate space 398 contains no weight representing
area and the gap between corresponding areas is
also given the same reference character 3B8 40
throughout the ?gure. It will be apparent, there
fore, that as the light ray passes from the light
transmitting area, to which the reference char
acter I49 is affixed, to the light transmitting
area I54, it crosses the opaque area 308, thus
affording ample time for the deenergization of
the instrumentalities which would effect print
ing of the numeral 9 before the instrumentali
ties effecting the printing of the numeral 4 in
scale beam, said chart being formed with rela
tively substantially light transmitting areas and
substantially opaque areas arranged in predeter
mined. relation corresponding to loads on the
scale, a pair of spaced parallel'rods'bearing‘a
?xed relation to the chart, a carriage movable ion
the ‘rods, a lightresponsive switch means carried
with the carriage on one side of the plane of‘move
ment of the carriage with respect to the rods, a
light source carried with the carriage on the op
posite-side of‘ the ‘chart from the ‘light responsive
switch means to direct a light ray on the chart
and. light responsive switch means, an electric
motor,'>a shaft, friction means adapted to 'con
nect‘ and'disconnect the motor to thevshaft, a
work performing member, a crank disc fixed on
the shaft to turn therewith, means linking the
carriage and the crank disc and the work per
the tens column are energized as a result of the 50 forming member to move synchronously, electric
circuit means including‘ the light responsive
light ray passing through the light transmitting
switch means, an electric circuit including the
area I54. Similarly, the unnumbered area be
motor and a motor circuit closer,‘ and a locking
tween the tens arcuate spaces and the hundreds
device for'the shaft movable between an opera
arcuate spaces is given the reference character
tive and an inoperative position and actuating
399 and the same area has the reference char-'
the circuit closer in inoperative position of the
acter 3G9 affixed to it between the end of area
locking device.
£59 and I50, as will be understood.
'3. In a weighing scale having a beam, a chart
It will thus be seen that we have provided
movable proportionally to the movement of, the
automatic weighing scale in which we are
beam, said chart being formed with relatively
enabled to effect the accurate automatic regis
substantially light transmitting areas and sub
tering and printing of a ticket thereby record
stantially opaque areas arranged in predeter
ing the loads placed upon a weighing machine
relation corresponding to loads on the
and in which means, mechanically separate from
scale, light responsive switch means and a light
any part of the weighing mechanism, but con
source movable in paths of movement upon oppo
trolled by the latter, control the registering,
site sides of said chart, an electric motor, a drive
ticket printing and/or recording means.
shaft, friction disc means adapted to connect and
Various modi?cations will occur to those skilled
disconnect the motor to the drive shaft, a work
in the art in the composition, con?guration and
performing member, a crank disc on the drive
weight representing areas of the chart of this in
shaft, means linking the light-responsive switch
vention as well as in the areas which are opaque
means and the crank disc and the work perform
as compared with those which are light transmit
ing member to move synchronously, electric cir
ting and furthermore as well as in the manner in
cuit means including the light responsive switch
which its movements are correlated with the scale
means, an electric circuit including the motor and
beam. Furthermore, various modi?cations will
a motor switch, a locking lever, interengaging
occur to those skilled in the art in the instru
means between the drive shaft and the locking
lever, said locking lever actuating the motor
switch when said locking lever is disengaged from
said shaft, a rockable member operatively con
nected with the lever whereby said member is
rocked, means connecting the rockable member
and the motor, a spring pressed plunger, guide
the light responsive switch means, control means
therefor, brake vane means carried by the shaft,
at least one reciprocable brake shoe adapted to
engage the brake vane means at one position of
its reciprocation, means to advance the recipro
cable brake shoe toward the brake vane means
to cause the brake shoe to engage the brake vane
means for the plunger, coacting means between
means, and means operatively connecting the
the plunger and the guide means, and means
control means and the brake shoe‘.
movable with the crank disc to render said 10
6. In a scale having a beam, the combination
plunger inoperative with respect to the coacting
with a shaft the angular rotation of which is
proportional to the displacement of the scale
4. In a weighing scale having a scale beam, a
beam, of a chart movable proportionally to the
chart, the movement of which is proportional to
movement of the shaft, said chart being formed
the displacement of the scale beam, said chart 15 with relatively substantially light transmitting
being formed with relatively substantially light
transmitting areas and substantially opaque
areas and substantially opaque areas arranged
in predetermined relation corresponding to loads
on the scale, carriage means having a fixed path
of movement with respect to the chart, light re
areas arranged in predetermined relation cor
responding to loads on the scale, a carriage
movable in ?xed relation to the chart to scan 20 sponsive means and a light source carried by the
said chart, a light responsive switch means car
carriage and disposed, respectively, in paths of
ried with the carriage on one side of the chart,
movement upon opposite sides of said chart, a
a light source and lens system carried with the
drive shaft, a crank disc carried thereby, opera
carriage on the opposite side of the chart from
tive connections between the crank disc and the
the light responsive switch means to direct a 25 carriage, a collar rotatable on the last-named
light ray on the chart and light responsive switch
shaft, a U-shaped arm, one leg of which is car
means, an electric motor, a drive shaft, locking
ried by the collar, a spring pressed plunger car
lever means adapted to connect and disconnect
ried with the arm in the plane of the crank disc,
the motor to the shaft, a movable member
latching means engaging the plunger in one p0~
adapted to perform work, a crank disc having a 30 sition of its movement, means actuated by the
lug and mounted on the drive shaft, means link
collar to control movement of the last-named
ing the carriage and the crank disc with the
shaft, and means carried with the crank disc to
movable member to move synchronously, an
release the plunger.
electromagnet, electric circuit means including
7. In a scale having a beam, the combination
the light responsive switch means, a manually
with a shaft, the angular rotation of which is
actuated motor switch and the eleotromagnet;
an electric circuit including the motor and the
motor switch, a locking lever, interengaging
proportional to the displacement of the scale
beam, of a chart movable proportionally to the
movement of the shaft, said chart being formed
means between the drive shaft and the locking
with relatively substantially light transmitting
lever means, said locking lever means actuating 40 areas and substantially opaque areas arranged
the motor switch when said shaft is disengaged
in predetermined relation corresponding to loads
from the lever, a rockable member operatively
on the scale, a carriage, rods to guide said car
connected with the lever, a plunger, a spring to
riage in a ?xed path across the face of the
press the plunger to engage with the lug on the
chart, light responsive switch means and a light
crank disc, ?xed guide means formed with a slot 45 source carried with the carriage and disposed
and a lug on the plunger to be received inthe
respectively in paths of movement upon opposite
slot to retain the plunger in one position of move
sides of said chart whereby a ray of light from
ment, and means connecting the rockable mem
the light source may pass through light trans
ber and the electromagnet to move the rockable
mitting areas of the chart, a drive shaft, opera
member at the commencement of a scanning
tive'connections between the drive shaft and the
carriage, lever means adapted to perform work,
5. In a weighing scale having a beam, a shaft
operative connections between the lever means
movable proportionally to the movement of the
to perform work and the carriage, a motor, a
beam, a chart carried by the shaft and formed
controlling the motor, clutch means be
with relatively substantially light transmitting .
tween the shaft and the motor, said clutch means
areas and substantially opaque areas arranged in
actuating the switch, and means to actuate the
predetermined relation corresponding to loads
on the scale, light responsive switch means and
a light source movable in paths of movement
upon opposite sides of said chart, means to move 60
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