US2470300A - Hekman gang - Google Patents

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H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES May 17, 1949.

6 Sheets-Sheet 1 Filed March 1'7, 1948 May 17, 1949. H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES 6 Sheets-Sheet 2 Filed Mm 17, 1948 INVENTO HERMAN GANG y B May 17, 1949. GANG 2,470,300

'NONREPEAT MEANS FOR CALCULATING MACHINES- Filed March 17, 1948 6 Sheets-Sheet 5 May 17, 1949. H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES 6 Sheets-Sheet 4 Filed March 17, 1948 INVENTOR.

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NONREPEAT MEANS FOR CALCULATING MACHINES Filed March 17, 1948 6 Sheets-Sheet 5 IN VEN TOR.

May 17,' 1949. H. GANG NONREPEAT MEANS FOR CALCULATING MACHINES Filed March 17, 1948 6 Sheets-Sheet 6 v INVENTOR. HER/WON Gfl/VG mar/v55:

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Patented May 17, 1949 NONREPEAT MEANS FOR- CALCULATING MACHINES Herman Gang, Livingston, N. J assignor to Monroe Calculating Machine Company, Orange, N. J a corporation of Delaware Application March 17, 1948, Serial No. 15,374

Claims. 1

The invention relates to settable means for limiting the registering action of the differential actuators of a multi-cyclic calculating machine to a single cycle, by releasing the set digit entering keys and/or by bringing the actuators to rest.

According to the invention the control of a pre-set non-repeat key is localized to operations initiated by a given key or keys; another operation initiating key effects operation of the nonrepeat devices independently of the setting of the non-repeat key, and still other operation initiating keys may be provided in the operation of which no non-repeat action will occur, irrespective of the setting of the non-repeat key.

The invention consists in the novel construction and combination of parts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention:

Figure 1 is a longitudinal vertical section of a calculating machine to which the invention is shown as applied.

Figure 2 is a left side elevation of the machine, with casing removed.

Figure 3 is a horizontal section of the machine.

Figure 4 is a right side elevation of the machine, with casing removed.

Figure 5 is a detail elevation of the non-repeat key and plus-minus bar mechanism.

Figure 6 is a detail elevation of the non-repeat key and a setup key mechanism.

Figure 7 is a detail elevation of the non-repeat key and a modified form of setup key mechanism.

Registrat on The invention is shown as applied to a calculating machine disclosed in the co-pending application of Herman Gang, Serial No. 8,54'7, filed February 16, 1948, and entitled Multiplier entering means for calculating machines.

According to said disclosure, amounts set up on the keyboard by the depression of selected digit entering keys l8 (Fig. 1) are set in the differential actuators 5 through the medium of selector bails I9. Upon rotation of actuator shaft 4, forwardly or reversely, such amounts are transmitted, additively or subtractively, through intermediate gearing 545 to the numeral wheels of a register I3.

Actuator shaft 4 is driven by power from an electric motor I, through a differential gear clutch and reversing unit I05, IIO (Fig. 2), gears 408 and 355, shaft 350 and gearing 405 (Fig. 4) The elements I05 and N0 of thedifierential gear unit are driven oppositely, and are engageable respectively 'by arms H4, H3 of a clutch yoke III (Fig. 2), engagement of arm II4 with element I05 effecting additive rotation of the actuators, and engagement of element II3 with element II0 effecting drive of the output gear 408 of the differential unit in the opposite direction, and subtractive rotation of the actuators 5.

Calculation in any of the four rules of arithmetic may be controlled by the manipulation of plus and minus bars I20, I2I (Figs. 4 and 5), having link connection I23 with a rock shaft I25. A setting plate I28, mounted upon shaft I25, is provided with lugs I28, engaging an extension I30 of clutch yoke III. Depression of plus bar I20 will rock shaft I25 in a clockwise direction as viewed in Figure 5, rocking clutch yoke I I I clockwise as viewed in Figure 2 and engaging arm I I4 with clutch element I05. Depression of minus bar I2l will lock shaft I25 and clutch yoke III in the opposite direction, engaging arm II3 with clutch element IIO.

Normally the clutch yoke is disengaged and the differential actuators 5 are brought to rest as they next come into their full cycle position following manual release of key I20 or I2I. This is effected as follows: When shaft I25 is rocked, the rear end of a spring biased lever I34 (Fig. 2) is depressed by contact with a roller I33 mounted on said lever, of one or the other of two opposed cam faces formed on setting plate I28. A pawl I36 is mounted on the rearward arm of lever I34, said pawl having a lug normally lying in front of a lug formed on a trigger 3|. Rocking of lever I34 will depress pawl I36, allowing the lug thereof to fall beneath the lug of trigger 3I, so that upon release of the operating key and return of lever I34 to normal position, trigger 3I will be lifted. In the normal position of the parts trigger 3| is in restraining engagement with a spring biased pawl 25 mounted upon a stop arm 24. Lifting of trigger 3I will release pawl 25, allowing said pawl to be moved counterclockwise by its spring. A rock arm 22 is connected by link 2I and crank arm 20 with the shaft 350, said arm oscillating during the cycling of the differential actuators. Pawl 25, having been released, will fall behind a shoulder 21 of arm 22, as said arm moves through its rearward dead center position, corresponding to the full cycle position of actuators 5. Continued movement of shaft 350 will now drive arms 22 and 24 as a unit in clockwise direction, and one of two opposed cam faces formed in a rearward extension I44 of arm 24 will, through pin I45, centralize the clutch yoke III and break stems. A key releasing bar 43! extends laterally across the keyboard and is provided-with lugsengaging the locking bails 432. Endwise movement of the bar 43 I will therefore rock bails432, against the tension of their springs, thereby releasing any keys l8 which have been set into operative position.

Non-repeat Registrations initiatedby the plus and minus bars -l,20, 2 i may be limited .to -a single cycle by settablenomrepeat. means.

{Lhismeans is operatedby-a cam 4L9 (Fig. 4) mounted concentrically and having lost motion connection with a gear 4Z0, driven from the difierenti al actuator ;:drive ;train by gearing 51:0. Due to the lost motion connection, cam-M9 will engage a pendant.;4l,8,,mounted upon a lever 42!, during the last portion of .an actuator cycle ;in either direction ;of rotation. Pendant 418 is connectedwith. lever,4 2 l by a-stud 144,, and atits lower end has slotted engagement with the fulcrum -,'M5 of said lever. This slotted engagement Perm-its in e n en move n o t P a t which forms a normally ineiiective element of the non-repeat train. When however pendant 4L8 is held asa rigidextension of lever 42! ,cam 419 will operate said lever, and the ,llp'per end thereof will contactone ,arm: 9f -a.-be1l crank 431), the other arm-of whichengages the-key releasing bar 53f ({Figs. 3. ftlldfl) so thatwoperationpi lever 42l will clear the keyboard.

Bell crank lever 430 1135 engagement with a second bell crank lever #33, having an arm engaging a bar ii-31 i, extending transversely across the machine, said barat its other end engaging one arm of a .bell crank lever 435. The other arinof bell crank lever 435, is .designedto contact with a -,cam extension 436 (Fig. 2) of an intermediately ,fulcru-med lever 43! having at its rearend pin andslotengagement with the trigger 3;! of the stopping means. Operation of lever 42.] will therefore act to trip trigger 3!, so that the clutch yoke I ll will be neutralized and the actuators brought to rest in full cycle position at .the ,end .of their first cycle of operation.

Pendant 418 may be held rigid withlever '42 under the joint controlof the depressed plus and minus bar and of a preset non-repeat key 14 [ll (Figs. 4, 5 and 6). This joint control is effected through aguide abutment 14B pivotaily mountedupona slide plate Jill having cam surfaces engaged by pins 748;, i 45 mounted n he stems ofthe plus bar 129 and minus bar 'l2l respectively. The pivot point or guide abutment "146 is intermediate its length, the lower arm of the member being design'edto contact with thelower end of the pendant Mil, while the upper arm of the abutment member is freely movable, so long as the non-repeat key 410 remains undepressed. Under these conditions, depression of the plus or minus bar will effect an idle rocking of the abutment member 146 and pendant M8 will be allowed to pivot idly around point 7M, and lever {21 will not be operated. When, however, nonrepeat key M0 lies indepressed position, a lug 150 of said key will lie in the path of movement of the upper arm of abutment member 146, and upon operation of the plus or minus bar, clockwise rocking of the abutment member being prevented, the lower arm of this member will hold the lower end of pendant M8 in its rearward position, holding the contact portion of said pendant-in the path of movement of the cam 9, so that pendant M8 and lever 42l will act as a unit to efiect the non-repeat adjustments. The abutment member will be locked in this position during the non-repeat operation by means of aspring biased latch engageable with slide plate 14'! as said plate is moved into operative position. During the action of the stopping means, latch 15] is released by engage- .mentthereofobysrocker 152 (Fig. 4) having operatingconnection (not shown) with stop arm 24. In order that latch 15! may not reengage slide plate 141 after the machine is stopped, in case the operation key is held depressed, a spring biased-blocking slide T53 (Fig. 5) is mounted on latch'fil and isdisplaced-byslide plate 741 when said 'plate is moved to operative position, to al1ow-the engaging mg of the latch 15! to -drop back of the corresponding lug of the slide plate. Upon release of latch "151 however, blocking slide 1'53 will sna overthe lug-of the slide-p'lateand prevent -reengagement by pivotal movement of theiatch.

For convenience of retraction, non-repeatkey 410 has connection through a yoke 41! (Fig. 6) with a repeat key 409, sothat depression ofeitherkey-willactto lif-t theother key. A toggle spring serves to hold yoke 4M in either adjusted'position.

"The control of the non-repeat ke being localized to operations efiected by the plus-and-minus bars, it will be obvious that other keys maybe provided whereby a number of consecutive cycles of operation -may be efiected without regard to the setting of the repeat and non-repeat keys. It may also be desirable to provide an operation key manipulation of which will always result in a single cycle registration, irrespective or the setting of the repeat and non repeat keys. Such a key is disclosed in co-pending application Serial No. 8,547, above referred'to, as a-means for entering multiplier or dividend values =in'to a set of multiplier storage wheels 52-4 (Fig. '3) or into the-register wheels I 3, respectively. Further, this co-pending application discloses a modifiediorm of this value entering mechanism in which a cycle of additive registration is followed by a cycle of subtractive registration, the non-repeat means operating at the end of each cycle, :first to stop further additive rotation of the actuators and thereafter to stop the machine and clear the keyboard. The present invention is usable also 'in connection with this two cycle entering or setup mechanism, as indicated in Figures 4+6, but reference is made to application- Serial No. :8,'54,7 for the details thereof, since they are not directly pertinent tovthe present invention The two cycle setup key 525 (Fig. 6) will set the non-repeat mechanism to active position as 'z-follows A pawl 1:54 is mounted on the stem .of the setup key 526 and, during depression of the key will engage one member of a toggle linkage T55, normally holding lever 156 in raised position. Toggle155 being broken by the action of pawl 16 i, lever 156 will be moved downwardly by its spring (not-shown), bringing apin 751 of said lever-into contact with a cam face formed in a slide 158, the forward end of said slide having a shoulder engaging a pin in the lower arm of abutment member 146. Depression of key 526 and breaking of toggle I55 will move slide 158 rearwardly, moving abutment member 146 against the lower end of pendant 418 to render the non-repeat devices operative. The lower end of the abutment member 146 may be moved into this position irrespective of the setting of the repeat and non-repeat keys, the adjustment being held by engagement of a spring biased latch 159 with slide 158. At the end of the operation toggle 155 will be restored to normal condition and rocker 152 will operate to release latch 159.

Control of the non-repeat devices by a onecycle setup means is illustrated in Figure '7, wherein parts similar to those shown in Figures 4-6 are given corresponding reference numbers, distinguished by the exponent According to this modified form the setup key 526' is provided with an extension overlying the pin "8 in the stem of plus bar I20, so that depression of the setup key will initiate operation of the differential actuators. Key 526' is also provided with a pm 160 overlying a cam portion of slide 158 and acting to move said slide rearward upon depression of the key, thus rocking guide abutment 146 into its non-repeat position. The parts will be held in this position by latch 159, and released by rocker 152', relatching of plate 158' before the restoration of the parts being prevented by a blocking slide 16 I, similar to the blocking slide previously described in relation to the plus-minus bar slide plate Ml.

I claim:

1. In a calculating machine having a register, cyclically operable differential actuators therefor, cycling means for said actuators, devices adjustable to enter values in said actuators, and an operation key manipulable to control registering movement of the actuators by said cycling means; normally inactive non-repeat means operable by said cycling means to limit the registering action of said actuators to a single cycle, including a settable non-repeat key, a member movable in time with the actuators, a transmission train driven by said member and including a normally inefiective element, a guide abutment settable conjointly by said non-repeat and operation keys to hold said transmission element in effective condition, a second operation key, and a slide operable under control of said second key to set the abutment into holding position independently of the non-repeat key.

2. A calculating machine according to claim wherein the first-named operation key is freely retractible upon manual release, and in which is provided a slide plate operable by said firstnamed key and having operating connection with the guide abutment, a latch acting to hold said slide plate in operated position, and a member.

driven in timed relation with the movement of the differential actuators and contacting with and releasing the latch.

3. A calculating machine according to claim 2, wherein is provided a spring biased blocking slide mounted on the latch, said blocking slide being displaceable by the slide plate in the movement thereof to operated position and acting upon release of the latch to prevent relatching of the operated slide plate.

4. A calculating machine according to claim 3, wherein is provided a second latch, releasable by the timed latch releasing member and acting to hold the slide related to the second operation key in operated position.

5. A calculating machine according to claim 4, wherein the guide abutment consists of a member intermediately pivoted upon the slide plate, and in which a lug is provided on the non-repeat key, settable with said key into the path of movement of the free arm of said member.

HERMAN GANG.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,354,839 Phinney Oct. 5, 1920 1,936,046 Chase Nov. 21, 1933 2,034,085 Chase Mar. 17, 1936 2,160,361 Hilder May 30, 1939 2,302,932 Avery Nov. 24, 1942 2,391,089 Friden et a1 Dec. 18, 1945 Certificate of Correction Patent No. 2,470,300. May 17, 1949;

HERMAN GANG It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 2, line 20, for the word lock read rock;

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 11th day of October, A. D. 1949.

THOMAS F.- MURPHY,

Assistant O'ommz'ssioner of Patents.

Certificate of Correction Patent No. 2,470,300. May 17, 1949; HERMAN GANG It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows:

Column 2, line 20, for the Word lock read rock;

and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the casein the Patent Ofiice.

Signed and sealed this 11th day of October, A. D. 1949.

THOMAS E MURPHY,

Assistant Uommissioner of Patents.

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