US2360704A - Calculating machine - Google Patents

Calculating machine Download PDF

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US2360704A
US2360704A US2360704DA US2360704A US 2360704 A US2360704 A US 2360704A US 2360704D A US2360704D A US 2360704DA US 2360704 A US2360704 A US 2360704A
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resetting
dials
rack
dial
gears
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06CDIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C1/00Computing aids in which the computing members form at least part of the displayed result and manipulated directly by hand, e.g. abacus, pocket adding device
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06CDIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C15/00Computing mechanisms; Actuating devices therefor
    • G06C15/42Devices for resetting to zero or other datum

Description

Oct. 17, 1944. J. L. MOODY 2,350,704
CALCULATING MACHINE Filed Aug. 28, 1942 3 Sheets-Sheet l FIE-.1:
[TURN INVENTOR John L. M0003,
ATTORNEY 17, 1944- J. L. MOODY 2,360,704
CALCULATING MACHINE Filed Aug. 28, 1942 3 Sheets-Sheet 2 IHVEHTOR ATTORNEY J. L. MOODY CALCULATING MACHINE Filed Augf28, 1942 3 Sheets-Sheet 5 ATTDRN EY Patented Oct. 17, 1944 CALCULATING MACHINE John L. Moody, Oakland, Cali1'., assignor to Friden Calculating Machine 00., Inc., a corporatlon of California Application August 28, 1942, Serial No. 456,492
Claims. (01. 235-144) -used repeatedly. It is desirable for such series of calculations to pre-set the desired value so that it can be set into the accumulator as a part of a single operation. Such a value for example is often in the form of a constant dividend which is used in-a series of dividing operations but with a different divisor in each successive operation.
It is a general object of the invention to provide an improved mechanism for entering a selected value into the accumulator of a calculating machine,
Another object of the invention is to provide a mechanism of the above character where the value entering operation can be performed as an incident to the erasure of a previous figure standing in the accumulator.
Another object of the invention is to provide a mechanism of the above character wherein the values can be entered by means of a single operation.
Another object of the invention is to provide a mechanism which can be manufactured and inshown as indicated by the line 5b5b in Figure 2.
Figure 6 is a view taken similarly to Figure 5, but showing the parts in the position occupied thereby during resetting operations.
Figure 7 is'a view similar to Figures 5 and 6, but showing the parts in the position, where they are conditioned for setting of the values into the dials.
The instant invention is shown as embodied in a calculating machine of the type disclosed in the patent to Carl M. Friden, No. 2,229,889, issued January 28, 1941, as modified in the co-pending application of Carl M. Friden, Ser. No. 240,269, filed November 14, 1938.
Referring to Figure 1, the calculating machine includes a body portion III, on which a shiftable register carriage I l is mounted for ordinal shifting movement in the usual manner; The register carriage supports an accumulator including numeral wheels or dials l2, having manual setting knobs or twirlers l3, and a revolutions counter For entering values into the accumulator,
, the body of the machine is provided with numeral stalled conveniently in the conventional form of calculating machines. I
Other objects and advantages of the invention will be apparent from the following description of a preferred embodiment thereof, as illustrated in the accompanying drawings, in which:
Figure 1 is a fragmentary plan view of a calculating machine embodying the instant invention.
Figure .2 is a fragmentary sectional view of a calculating machine taken as indicated by the line 22 in Figure 1.
Figure 3 is a fragmentary elevational view partially in section of an adjacent pair of the numeral wheels or dials or the accumulator taken as indicated by the line 3-3 in Figure 2.
Figure 4 is a fragmentara bottom plan view of the carriage of the calculating machine, with some of the parts shown in section.
Figure 5 is a fragmentary plan view of the register carriage with certain parts shown in section. The right hand dial is shown as indicated in the plane of the line 5-5 in Figure 2, the middle dial is shown in the plane indicated by the line 50-50: in Figure 2, and the left-hand dial is keys I6 of the usual character which control a conventional form of selecting and actuating mechanismso that values can beentered in the accumulator by depression of plus key IT or minus key l8- The ordinal position of the entry is controlled by respective shift keys I9 and 20, which cause shifting of carriage l I. Clear key 2| is provided for numeral keys I6, while add key 22 controls clearing of. the keyboard after a registration if depressed. The machine also includes a tabulating' control key 23, by means of which the carriage can be positioned as selected by setting one of the tabulator keys 24 on the carriage. A division control lever 26 is provided for controlling a conventional form of division mechanism. Power re-setting-or clearance operation of the accumulator and the revolutions counter can be performed by depressing return clear key 21 as disclosed in said application 240,269. Manual clearance of the accumulator can be effected by operating handle 28 which controls mechanism later described, while the revolutions counter may be cleared by operatinghandle 29.
Referring to Figure 2, the accumulator mechanism including the dials l2, mounted on a dial shaft 3|, carrying at the lower end a ten-tooth gear 32 which can be selectively engaged with either of ten-tooth gears 33 or' 34 at the end of a spool 36 which is slidably and non-rotatably a gate or ball 38 in a conventional manner under control of the plus and minus keys l1 or |8.
A conventional tens transfer mechanism is provided, including a transfer gear 4|, (Figure 2) slidably and non-rotatably mounted on square shaft 31 for movement into the path of a transfer actuator 42 as disclosed in said patent. The transfer gear 4| is provided with a flanged collar 43 for engagement by a down-turned ear 44 01 a transfer lever 45 (Figures 2 and 4) which is pivoted on an endwise slidable pivot 46 as later described. Each lever 45 is operated by singletooth gear 41 on the associated dial shaft 3|.
In order to perform the dividend entry as a part of the resetting operation the numeral wheel or dial assemblies are of special construction and have associated therewith, a resetting mechanism for restoring all of the dials to zero and a second resetting mechanism for restoring the dials to a selected value other than zero.
Referring to Figures 2 and 3, each dial shaft 3| is provided with a mutilated gear 5| which is fixed thereon, alternate gears 5| being offset vertically.for cooperation with respective vertically offset sets of teeth 52 of a resetting rack 53, mounted for endwise sliding movement in the carriage frame and having an operating handle 54. As seen in Figure 5, rack 53 has a cut-away portion 56 which is opposite the gear 5| when rack 53 is in normal inactive position so that gear 5| can turn freely when the dial is actuated. However, endwise movement of rack 53 past the gears 5| will turn the gears 5| and the associated dials l2 until the mutilated portion of each gear is opposite the rack. During continued movement of the rack, each gear 5| moves into engagement with the associated raised portion 51 of the rack so that the gear 5|, shaft 3| and dial |2 are locked against overthrow. The rack 53 is spring-urged in the usual fashion to return to the position shown in Figure 5 after operation by the handle 54.
Each numeral wheel shaft 3| (Figures 2 and 3) also carries a sleeve 6| which at its upper end has a serrated flange 62 engaging a complementary serrated portion 63 secured to the dial |2. At its lower end, each sleeve 6| carries a mutilated gear 64 similar to the gear 5|, serrated portions 62 and 63 being springurged together by spring 66, compressed between gears 5| and 64. Normally each sleeve 6| and its associated gear 64 turn with the associated dial I2 and its dial shaft 3|. Gears 64 of the dials are offset vertically to cooperate with a second resetting rack 61 similar to rack 53. Rack 61 carries operating handle 28. To provide a stop in the selected position of the dials |2 to which they are restored by operation of rack 61, a stop slide 1| (Figure 5) is mounted on the upper surface of the carriage for operation by bellcrank 12 pivoted on pin 13. Bellcrank 12 has a cam edge 14 for engagement by the handle 28 so that the bellcrank 12 is rocked clockwise as viewed in Figure 5 upon operation of handle 28. The movement of slide 1| by operation of rack 61 moves its fingers 16 into the path of the associated teeth 11, carried by respective sleeves 6|.
From the above description it will be seen that if the sleeves 6| are locked against movement by adjustment of rack 61 to the position shown in Figure '1, the dials |2 can be turned or set by means of their twirler knobs l3 with respect to the associated sleeve 6| and the stop fingers 11 and resetting gears 64 carried thereby.
ferentially with respect to its normal "zero" position so that it will be restored to a selected value other than zero upon subsequent resetting operation of rack 61.
During power operation of rack 61 under control of key 21 and endwise movable operating slide 30 as disclosed in said application 240,269, it is desirable to prevent entry of erroneous transfers, and means areprovided for disabling the transfer levers 45 with respect to the associated single tooth gears "during operation 01' resetting rack 61. It will be recalled that bellcrank 12 (Fig. 5) and its supporting rod 13 are oscillated clockwise upon operation of handle 28.
and resetting rack 61. At its lower end, rod 13 (Figs. 2, 3-and 5) has a finger 8| disposed between upright ears 82 of a slide 83 suitably mounted for endwise sliding movement on the carriage frame and normally positioned as seen In this way each dial l2 can be adjusted difin Figures 3 and 5. Slide 83 is formed to provide offset portions 84 (Figure 3) and adjacent cam portions 86. ()fiset portions 84 are disposed over pivot pins 46 of transfer levers 45. Upon movement of slide 83 to the left by finger 8| during a resetting operation of rack 61, cam portions 86 depress pins 46 so that the transfer levers 45 are moved out of the plane of the associated tripping gears 41. This movement is insufficient to displace spring-urged retaining balls 81 from V-notches 88 in pins 46 so that transfer levers 45 snap back to active position at the end of the operation.
In operation when it is desired to enter a preselected figure into the dials of the accumulator the handle 28 is first operated as shown in Figure 7 so that the rack 61 is in locking relation with respect to the mutilated gears 64 associated therewith. Each dial can then be set through the use of its twirler |3 to a desired value, for example the third dial from the right in Figure '1 has been set to the figure five. During this setting a relative slipping or displacement is effected between the opposed sets of serrations 62 and 63. After this setting is effected and the rack 61 is released, a subsequent resetting operation of the rack 61 by the handle 28 will turn all dials which have been adjusted to the selected values.
Subsequently when it is desired to erase the constant value both of resetting racks 53 and 61 are operated by their respective handles 54 and 28 to the positions shown in Figure 6. In this operation the dial shafts 3| and the dials |2 are restored to zero by rack 53 operated on mutilated gears 5| and the sleeves 6| are restored to zero relation with respect to the dials by the operation of rack 61 on gear 64.
I claim:
1. In a calculating machine, a register comprising a series of dials, each dial having a shaft, a. mutilated resetting gear journalled about the shaft of the associated dial and releasably engaged with said dial to impart driving movement thereto, a resetting rack for said resetting gears for restoring said gears to predetermined positions, difierential adjustment of said dials with respect to said gears serving to cause setting of said dials to pre-selected values other than zero in accordance with the differential setting thereof.
2. In a calculating machine, a register comprising a series of dials, each dial having a shaft, 9. mutilated resetting gear journalled about the shaft of the associated dial and releasably engaged with said dial to impart driving movement thereto, and a resetting rack for said resetting gears for restoring said gears to predetermined thereof, another mutilated gear fixed on each of said dial shafts, and a resetting rack associated with said other set 0! mutilated gears for restoring said gears and said dials to zero registration, whereby simultaneous operation of said resetting rack serves to position said difierentially settable elements in zero relation with respect to said dials.
3. In a calculating machine, a register comprising a series oi dials, a resetting means, and differentially adjustable connections between said dials and said resetting means, whereby operation of said resetting means sets said dials to selected values in accordance with the adjustments of said connections, and selectively operable means cooperating with said resetting means for adjusting said connections to restore said dials to zero.
4. In a calculating machine, a register comprising a series or dials, a resetting means, and differentially adjustable connections between said dials and said resetting means, whereby operation of said resetting means sets said dials to selected values in accordance with the adjustments of said connections, transfer means operable by said dials, and means controlled by said resetting means upon operation thereof for ren dering said transfer means inefiective.
5. In a calculating machine, a register comprising a series of numeral dials secured on ver-' tical shafts, each shaft having a mutilated gear secured thereto, a horizontal resetting rack means slidable to engage said gears and to restore said gears to a normal position, a sleeve rotatable on each shaft, a resilient clutch to connect each sleeve to its associated dia1,.a second mutilated gear on each sleeve, asecond horizontal reset-
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425072A (en) * 1939-05-16 1947-08-05 Meter Recorder Company Meter recorder and cost computer
US2646929A (en) * 1953-07-28 Gourdon
US2660377A (en) * 1953-11-24 Constant factor mechanism
US2797869A (en) * 1957-07-02 grobl
US2950051A (en) * 1960-08-23 Anx tens carry mechanism
US3036768A (en) * 1962-05-29 moody

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646929A (en) * 1953-07-28 Gourdon
US2660377A (en) * 1953-11-24 Constant factor mechanism
US2797869A (en) * 1957-07-02 grobl
US2950051A (en) * 1960-08-23 Anx tens carry mechanism
US3036768A (en) * 1962-05-29 moody
US2425072A (en) * 1939-05-16 1947-08-05 Meter Recorder Company Meter recorder and cost computer

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