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Патент USA US2111120

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March 15, 193%,
A, w, M15485
Filed Apllil 17,1954
5 Sheets-Sheet 1
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March 15, 19389.
Filed April 17, 1934
5 ‘Sheets-Sheet '2
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March 159 19380
Filed April 17, 1934
5 Sheets—Shee'b 5
March 15, 1938.
Filed April 17, 1934
5 Sheets-Sheet 4
'f/ 44¢ whiz
March 15, 1938.
Filed April 17, 1934
5 Sheets-Sheet 5
Patented Mar. 15, 1938
2,1 11,120
Albert W. Mills, Endicott, N.- Y., assignor to In
ternational Business Machines Corporation,
New York, N. Y., a corporation of New York
Application April 17, 1934, Serial No. 720,935
3 Claims. (Cl. 235-613).
This invention is directed to improvements in
record controlled accounting machines.
It is speci?cally directed to improvements in
electric tabulating machines of the type dis
5 closed in Patent No. 1,916,987, issued July 4, 1933,
to J. R. Peirce.
The principal object of the present invention
is to provide improved total taking mechanism
for accumulators of the type shown in said pat
10 ent.
Each denominational order of the accumu
lators is provided with a commutator read-out
mechanism which comprises a plurality of sta
tionary commutator segments corresponding to
the digital values that may be represented by the
order. A rotatably mounted brush is adapted to
be positioned by the accumulator order to co
operate with the ?xed segments and after an
entry has been made, the brush will come to rest
in contact with the segment corresponding to
Fig. 5 is a perspective diagrammatic view of
the radially enmeshing or clutching gear mech UK
anism of the accumulator.
Fig. 6 is a sectional view taken on line 6-6
of Fig. 2.
Fig. 7 is an enlarged'view of the total'taking
Fig. 8 is a wiring diagram of the electric cir
cuits of the machine.
Fig. 9 is a modi?ed form of circuit arrange
For clarity and brevity of description, the ma
chine comprising the present invention is herein
operations, electric impulses are emitted in suc
illustrated in its elemental form with only two
denominational or'ders shown in the mechanical
views and three indicated in the circuit diagram.
The card sensing devices and some other well
known and unimportant features are shown con
cession to correspondingly numbered segments of
the entry made therein.
During total taking
each order and those in contact ,with brushes
Record cards l0 (Fig. 8) of the well-known
will complete circuits to the printing magnets at
the time the impulse-is transmitted, to position
the type bars for printing the number in the
Hollerith type are fed through the card feeding
At the same time a resetting cir
cuit is completed by the same impulse which will
cause the accumulator order to advance to zero
30 position, thus effecting a resetting operation of
that order. With this arrangement the sepa
rate orders of the accumulator are separately and
individually controlled to reset themselves and
the resetting impulses are differentially com
' pleted according to the value represented in the
order. Switching devices are provided for each
order so that total printing therefrom may take
place without accompanying reset so that so
called progressive total taking operations may be
Figs. 3 and 4 are detail views of the total tak
ing devices of the accumulator showing total
taking parts in different positions.
Various other objects and advantages of the
invention will be obvious from the following par
ticular description of one form of mechanism
embodying the invention or from an inspection
of the accompanying drawings; and the inven
tion also constitutes certain new and novel fea=
tures of construction and combination of parts
hereinafter set forth and claimed.
In the drawings:
Fig. 1 is a front view of the machine showing
the printing mechanism and accumulator, and
total taking devices.
Fig. 2 is an enlarged view of an accumulator
unit showing two denominational orders with the
55‘ total read-out device of one broken away.
and analyzing mechanism and circuits are com
pleted through the differentially located index
point perforations to energize adding magnets l I
and printing magnets l2 so that the value repre
sented by a perforation may be printed and ac—
and accumulating
mechanism per se formno part in the present
invention and the description thereof will be
limited to an-explanation of the essential ele
ments. Further detailed explanation may be
found in the Peirce patent referred to above.
Printing mechanism
The printing devices may’be understood from
Fig. 1. The main drive shaft of the machine is
indicated at 83 ‘and serves also to drive the card
feedingvdevices, as explained in the patent. The
lower end of the type bar I4 is connected through
a vertical link it to the free ‘end of an arm it
which is pivoted at H.
Arm it is urged up- -
Wardly by spring it connected at its other end
to arm l9. The free end of arm M3 is connected
by thrust link it to an arm H which is pivoted
at H and which has a link 22 at its free end
which is connected to an arm of cam follower
member 23. Member 23 carries follower rollers
24 which cooperate with a pair of complementary
cams 25 driven from shaft it through suitable
During the up stroke of arm 21! it pushes arm '
lil upwardly by means of link 20 and arm l6
is also drawn upwardly through the instrumen
tality of spring l8. Inasmuch as type bar I4
is linked to the free end of arm l6, it is also
carried upwardly until stop pawl 26 engages one
of the ratchet teeth 21 on the edge of the type
bar whereupon arm 2| will continue its upward
motion but arm l6 and type bar M will remain
stationary, the ratchet tooth being held against
pawl 26 by spring 28. Tripping of pawl 26 is
effected by printing magnet l2, which when
energized attracts its armature and draws call
wire 29 toward the right, withdrawing latch 30
from pawl 26 and permitting spring 28 to move
the latter into engagement with a tooth 21. The
15 upward movement of type bar I4 is synchronized
with the movement of the record card l0 past
the analyzing brushes so that a circuit com
pleted through a perforation‘ in any index point
position will energize magnet |2 to interrupt
the corresponding type bar l4 with the type ele
ment 3| corresponding to the perforated index
point position on the printing line.
Accumulating mechanism
sembly 35 thereby rotating the assembly clock
wise, disengaging pinion 40 from gear 43 and
permitting armature 43 to again latch arm 34.
Suitable detenting mechanism is provided to
hold the gear 32 and associated parts in dis
placed position.
In operation the accumulator begins to rotate
at differential times in the cycle depending upon
when the impulse is received from the card ana
lyzing brushes and the rotation of the accumu
represented on the record card.
In the operating cycle of the machine, if 15
rotation of the accumulator has been stopped
by cam 46, an opportunity is provided for trans
ferring operations to take place if any are re
quired. The transfer operations are effected
electrically in much the same manner as in
Patent No. 1,372,965, issued March 29, 1921 to
C. D. Lake and are also fully shown and de
scribed in the Peirce patent referred to above,
Whenever an electrical impulse is sent to any
so that a detailed description thereof need not
be made here.
printer magnet l2, an impulse is also sent through
a corresponding accumulator magnet || (Figs.
1 and 2) in order that the accumulating element
including gear 32 and parts integral therewith
Secured to and insulated from each accumu
lator gear 32 is a brush structure 48 carrying
30 may be actuated to properly enter the amount
Energization of magnet | I attracts armature
33 moving it to the right (Fig. 2) thereby un~
latching arm 34 of assembly 35 shown in Fig. 5.
This assembly is mounted for oscillation on stud
36 and is normally urged counterclockwise about
Accumulator read-out device
four electrically connected brushes 49 which 30
traverse a concentric conductor segment 50 and
a plurality of metallic segments 5|. The ac
cumulating mechanism is so proportioned that
gear 32 and structure 48 make 1/4_Oth of a rev
olution for each digit entered. Thus, if a “9"
is entered, the gear 38 moves 9/40ths of a revolu
its pivot by spring 31. The right end of spring
tion and one of the brushes 49 will stand on a
31 is anchored to studs in the supporting plate
in the accumulating unit and its left end is in
segment 5| corresponding to the value of the
40 engagement with a suitable recess in assembly
35 (see Fig. 3). A fulcrum 38 presses upwardly
on spring 31 as shown, causing the left end of
the spring to exert a pressure on assembly 35,
tending to rock the same in a counterclockwise
direction. Therefore, when armature 33 releases
arm 34, assembly 35 is rotated slightly counter
clockwise. Carried by assembly 35 is a sleeve
39 on which are fast pinions 40 and 4|.
Pinion 4| is constantly in mesh with gear 32
freely mounted on stud 42. Pinion 4| and gear
32 are provided with extra long teeth to per—
mit oscillation of assembly 35 without disengag
ing the teeth of the pinion and gear. Pinion
40 is aligned to mesh with gear 43 (see also Fig.
6) whenever assembly 35 is oscillated to the
left and as pinion 40 and gear 43 have teeth of
ordinary length they become disengaged when
the assembly‘ is in normal position by armature
The gear 43 has driving connection with a
60 gear 44 which is in constant rotation‘by virtue
of its gear connection to the main shaft |3 (see
Fig. 7). Therefore, gear 43 is also in constant
- With the above construction in mind, the dif
ferential action of the accumulator may be un—
When magnet H is energized, armature 33
releases arm 34 and permits assembly 35 to
swing to the left. This movement engages pin
ion 40 with gear 43 and causes the pinion to
rotate in synchronism with the gear thereby
causing pinion 4| and gear 32 to also rotate in
synchronism therewith. This rotation continues
until a .hump 45 on cam 46 which is integral
75 with gear 43 passes under extension 41 of as
lator is stopped at a ?xed point in the cycle by
cam 46, thereby rotating the accumulator an
amount proportional to the amount of the digit
digit in the accumulator order while the next
adjacent brush is in contact with segment 50. 40
There is one segment 5| for each of the digit
positions of the accumulator 9, 8, l, . . . 2, |, 0
and the brushes 49 serve to provide an electrical
connection between segment 50 and the seg
ment 5| corresponding to the entry in the ac
cumulator. Thus, if a “6” is contained in the
accumulator, one of the brushes 49 will be in
contact with a segment 50 and another brush
will be in contact with the “6” segment 5|. For
example, in Fig. 3, the parts are shown in po 50
sition to represent an entry of “3” as standing
on the accumulator. The segments 5| are con
nected by suitable wires threaded through a con
duit 52 and terminating at terminals 53 in an
insulating block 54 from which connections may
be made to other parts of the machine.
Total taking operation
When the operator desires to take a total,
he rotates the knob 55 (Figs. 1 and 7) a quarter 60
turn, thereby causing cam 56 to force latch 51
to the right against the tension of its spring.
This releases the right end of lever 58 so that
it may rotate clockwise on its pivot pin 59.
Pin 60 in the face of disk 6| engages cam sur
face 62 on latch arm 63 thereby depressing it
su?iciently against the spring 64 for catch 65 to
clear the bottom of the retaining blade 66 there
by permitting arm 63 to move to the right. Arm
63 is pivoted at 61 to the upper end of an arm
of hell crank 68 which is mounted for rotation
on pin 59 and is integral with lever 58. The
other arm of bell crank 68 is provided with a
roller 69. -When no total is being taken, roller
69 contacts only with the reset or high portion of
disk 8! since with lever 58 latched as in Fig. 7
the arm 68 is also held in the position shown.
When catch 65 is released as above described and
when lever 58 is unlatched, roller 69 will drop
to the total taking or low portion of the cam 6I
thus permitting bell crank 68 and lever 58 to
rock clockwise on pin 58.
tacts C3, print magnet I2, wire 85, to line 88.
\In this way the digit represented by the perfora
Underneath pivot 58 is a horizontal rod ‘I8 on
which is pivoted an arm ‘II on which are spring
ferred to.
10 blades of a plurality of contacts generally desig
nated “C” which are arranged to cooperate with
contact blades mounted in a ?xed block of insu
lating material 12 so that when arm ‘H rocks
in a clockwise direction about rod 18 certain con
15 tacts will open and others will close. The func
tions of these various contacts will be more fully
explained in connection with the description of
the circuit diagram.
Arm ‘H is urged upwardly by spring ‘I3 and
inasmuch as arm ‘II bears against a projection
14 on the left end of lever 58 the single spring
‘I3 serves to move lever 58 and bell crank 68 as
above described. The left end of lever 58 is con
nected by vertical link ‘I5 to horizontal lever ‘I8
pivoted at ‘IT. At the right end of lever ‘I6 is
attached a link ‘I8 having slots ‘I9 at its ex
tremities. Resting in each slot 19 is a pin 88 in
the free end of horizontal arm 8| pivoted at 82.
The .free end of arm 8| carries the fulcrum 38
mentioned above which is in contact with the
underside of spring 31.
When the parts of the accumulator are in nor
mal position for adding as in Fig. 2, arm 8| is
held in raised position by lever ‘I6 and vertical
link 15.
Underneath a projection on arm 8| but
normally out of contact therewith is a latch 83
on the lower end ‘of arm 84 pivoted at 85. The
upper extremity of arm 84 rides in the path of
cams 86 which are fast to accumulating gear 32.
While arm BI is in the above normal position
the free end of spring 31 is pressed upwardly by
fulcrum 38 and serves, as already explained, to
swing assembly 35 in a counterclockwise direc
tion to carry out the adding operation but when
arm 84 is rocked in a clockwise direction by cams
86 during total taking operations, latch 83 is
withdrawn from beneath arm 8| which, as will
be explained, is free to drop during such opera
tions, and arm 8| will drop su?iciently to release
pressure of fulcrum 38 on spring 31 which then
follows the fulcrum outwardly and rotates as
sembly 35 clockwise instead of counterclockwise.
In other words, spring 31 tends to rotate as
sembly 35 in one direction when fulcrum 38 is
elevate-d and in the other direction when the
fulcrum is lowered.
Circuit diagram
The'operation of the machine will now be ex
60 plained with particular reference to the electric
circuits thereof. In Fig. 8, 81 represents the
driving motor of the ‘machine, which, when
switch 88 is closed, completes the circuit through
the motor from left side of line 89 to right side
65 of line 88.
A record card I8 is represented as moving to
wards the right under the sensing brushes 8i and
when a brush ?nds a hole in a position of the
card, a circuit is established from right side of
line 98, through circuit breaker contacts 88, brush
8I, commutator devices 83, which complete the
circuit only during the analysis of the index
point positions, normally closed contacts CI, wire
84, adding magnet II, wire 85, to line 89. A par
allel circuit extends from wire 84, through con
tion sensed may be printed and the value thereof
accumulated. After each entering operation, the
devices generally indicated at 96 operate to ef
fect carrying operations where necessary, in the
manner fully explained in the Peirce patent re
Total printing
When the operator desires to print the total 10
standing on the accumulator the knob 55 is
turned, as explained and the contacts generally
designated C in Fig. 7 are shifted. On the cir
cuit diagram the various contacts pre?xed “C”
will accordingly be changed from closed position,
as shown, to open, and vice versa.
Total printing is effected under control of an
emitter comprising a pair of electrically con
nected brushes 91 mounted upon and insulated
from shaft 88 (Fig. l) and adapted to make one
revolution for each cycle of the machine. In the
circuit diagram the brushes 8'! are indicated dia
grammatically as at opposite ends of a common
arm. In the mechanical arrangement, they are
located side by side. While one of the brushes
traverses a common segmental conductor 89 the
other successively contacts with a plurality of
separate commutator segments I80, one for each
of the several digits.
Extending from each segment I88 is a wire
I8I from which connections I82 are made to the
corresponding commutator segments 5| of the
accumulators. Thus, the “9” segment I88 is
connected through the “9” wire “II to all the “9” 35
segments 5| of the accumulator orders; the "8”
segment I88 as similarly connected to all the “8”
segments 5i, and so on. The common conductor
88 is connected to the right side of line 88
through contacts C5 closed only during total 40
taking operations. With these contacts closed,
brushes 8'! will successively contact the segments
I88 in synchronism with the movement of the
type bars so that as the several type elements
3| pass through printing position, the corre
spondingly numbered segments I88 will be elec
trically connected to the right side of line. As
sume for example, that one of the brushes 48
in the units order is positioned in contact with,
let us say, the “9” segment 5| thus representing
an entry of “9” in such order. A circuit will
be completed as the “9” type element approaches
printing position as follows: from right side of
line 88, contacts C5, common conductor 88,
brushes SI, “9” segment I88, “9” wire I8I, “9” ,
wire I82 in the units order, segment 5|, brushes
48, segment 58, wire I83, contacts C4, now closed,
print magnet I2, wire 95, to line 89. In this
manner the amount standing on the accumu
lator may be printed.
If resetting is desired, the switches I84 of the
individual accumulator orders are closed prior
to the total taking operation and the circuit just (i5
traced to the printing magnet will follow a par
allel path extending from the common segment
58, through wire I83, and branching therefrom
to wire I85, switch I84, relay magnet I86, add
ing magnet I I, wire 95, to line 89. Relay magnet 78
I88 will close its points IIlBa to provide a hold
ing circuit for magnet II which extends from
the right side of line 88, th.ough wire I81, con—
tacts C8, now closed, contacts I88a, relay mag—
net I88, adding magnet I I, wire 85, to left side 75
of line 89. Magnet II therefore will remain
energized until the knob 55 is released to permit
opening of contacts C2.
The effect of thus energizing the adding mag
net concurrently with the printing magnet may
best be explained in connection with Figs. 3 and
4 wherein the arm 16 is in its total taking posi
tion; that is, it has been moved downwardly
so that arm 8| is supported by latch 83. Fig. 3
10 shows the parts of the accumulator just prior
to a total printing operation with the brushes 49
positioned to represent an entry of “3” and an
electrical connection exists between common
segment 50 and the “3” segment 5|. Under con
trol of the emitter brushes in of Fig. 8, the cir
cuit is completed through the “3” segment 5| as
the corresponding type element approaches
printing position and as explained, the magnet
II is energized at this time, attracting its arma
ture 33 and permitting counterclockwise rocking
of the assembly 35 so that the accumulating
elements are clutched to the continually rotat
ing parts of the machine and the accumulating
unit, including cams 86, will commence to ro
tate at this time.
When the element reaches zero position, the
parts will be in the position shown in Fig. 4
wherein one of the cams 86 has engaged the
free end of arm 84, rocking the latter clockwise
and withdrawing latch 83 from arm 8| so that
the spring 31 now acts to rock the clutching as
sembly 35 clockwise to declutched position, and
the accumulating element will remain at rest
23 Li
. in zero position with cam 86 holding the parts
It will be apparent that rotation of the several
accumulator orders is commenced at differential
times depending upon the entries therein and
that the restoring operations will also terminate
at differential times. For example, an element
standing at “9” will commence to rotate at the
beginning of the total taking operation and will
be advanced but a single step to its zero posi
tion and an element standing at “3” will be ener
gized somewhat later in the cycle and will ad
vance seven steps to zero position.
In Fig. 9 is shown a modi?ed form of circuit
for controlling resetting operations and for pur~
poses of explanation but a single order has been
shown. In this arrangement, the emitter ‘brushes
9‘! contact with the segments I00 in reverse order
and the type elements 3| on the type bars used
for total printing are also reversed; that is, they
55 pass printing position in the order 0, 1, 2, 3, 4, 5,
6, 7', 8, 9. With this arrangement, the printing
circuits will be completed at differential times
and the circuits to the adding magnets‘ l I will
also be completed at differential times accord
ing to the setting of the brushes 49 but the ro
tation of all the accumulating elements will ter
minate at the same time; that is, they will all
reach zero position together.
This is due to the fact that with this arrange
ment the elements that have the farthest to travel
to zero position are picked up ?rst, whereas in
the preferred form, they are picked up in in
verted order.
While there has been shown and described and
pointed out the fundamental novel features of
the invention as applied to a single modification,
it will be understood that various omissions and ‘
substitutions and changes in the form and details
of the device illustrated and in its operation may
be made by those skilled in the art without de
parting from the spirit of the invention. It is
the intention therefore to be limited only as
indicated by the scope of the following claims.
Whatis claimed is as follows:
1. A resetting mechanism for an accumulator
having denominational order elements, compris
ing devices positionable by the elements to rep—
resent an entry in the accumulator, circuit con
nections, means controlled by said positionable
means for controlling the completion of said
circuit connections at differential times in ac
cordance with said entries, means included in
said circuit connections for diiferentially initiat 30
ing an advance of the accumulating elements of
each order and devices separately controlled by
the element of each order for interrupting said
advance when the element reaches zero position.
2. In a machine of the class described, an ac
cumulating element, means including a clutch
mechanism and an actuating magnet for causing
data entries representative of digits to be made
in said element, a read-out control device posi
tioned by said element, recording control mech
anism, and means controlled by said device for
concurrently initiating an operation of said
recording control mechanism and said magnet.
3. An accounting machine including a plurality
of accumulating elements and a driving clutch
mechanism for each, operating devices for said
clutch mechanism for effecting operation of said
clutch mechanisms at differential times for enter- '
ing items during item entering operations, fur-_
ther means also including said devices for re
setting said accumulating elements during re
setting operations, machine controlled devices for
eifecting unclutching of said clutch mechanisms
for terminating entering operations and devices
controlled by each element for terminating re
setting operations at differential times.
2,111,120.——Albert W. Mills, Endicott, .N. Y. TABULATING MACHINE. Patent
dated March 15, 1938. Disclaimer ?led December 17, 1940, by the assignee,
International Business Machines Corporation.
Hereby enters this disclaimer to claim 3 in said speci?cation.
[O?icial Gazette January 21, 1.941.]
2,111,120.———Albert W. Mills, Endieott, .N. Y. TABULATING MACHINE. Patent
dated March 15, 1938. Disclaimer ?led December 17, 1940, by the assignee,
International Business Machines Corporation.
Hereby enters this disclaimer to claim 3 in said speci?cation.
[O?icial Gazette January 91, 1941.]
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