US1747686A - thieme - Google Patents

Description

O. THIEME Feb ISS N30.

COMBINED TYPEWRITING AND COMPUTING MACHINE Fled June l 1926 2 Sheets-Shea?.

mi C C E E C 1 M Patented Feb. 13, i930 UNITED STATES PATENT OFFICE TO ELLIOTT-FISHER COMPANY, OF NEW WARE YORK, N. Y., A CORPORATION OF DELA- COMBINED TYPEWRITING- AND COMPUTING MACHINE Application led June 1, 1926. Serial No. 112,797.

ThisV invention relates to a combined typew'riting and computing machine, and more particularly to a machine of the Underwood- Hanson type such as shown in the patent to Hanson, No. 1,278,812, of September 10, 1918.

In this machine, a register-i'ack-bar is provided for each decimal order 'of a register and each bar carries a' series of settable pins representing the digits. The numeral-keys of the typewriter are effective to set pins in the various register-bars representing the numerals of an item to be added or subtracted, and a general operator, having a bar mounted transversely of the register-rack-bars, is subsequently reciprocated in the same direction as the register-rack-bars. During the initial or forward stroke of the actuatingcycle, this bar will move in a path adjacent the register-bars and pick up the various register-bars by engaging such of the pins as have been set and move the bars in proportion to the various digit values as represented by the pins set therein.

The register-bars ai'e permanently in mesh with ay series of register-wheel-pinions which .drive a like series of dial-wheels by a pawland-ratchet mechanism, the dial-wlieels carrying visible numerals on their periplieries. By these means the forward or initial strokel of the register-bars is imparted to the dialwlieels, which thereupon are locked and then the register-bars and the pinions are reset to normal position. A spring-actuated detent is provided for each dial-wheel to align the same. The detents engage modified gears carried by the dial-wheels. Suitable carrying devices are also`provided to cooperatewith the dial-wheels to carry over the tens values, and these are actuated by the general operator during the returningr movement thereof.

Then the general operator is reciprocated above a certain speed, the transverse bar Will engage the register-pin-bars with considerable impact the ratcliet-driven dial-wheels will move ahead faster than their driving means and the dial-wheel detents will register one or even two units in excess of the right numeral.

It is one of the objects of this invention to providepositive controlling means for the dial-wheels to prevent this momentum movement thereof, so that they cannot over-rotate when actuated at such higher speed as may otherwise be permissible for the machine, since it is well known that the speed at which this machine can be safely operated is largely vas these spaces present themselves in succession during the rotation of the dial-wheels, the entering and retiacting movement of the lock-levers being so synchronized. with the Y rotation of the dial-wheels that they Will atv all times prevent movement` of the dial-wheels at higher speed than that of the driving pinions, so that the dial-wheels' are positively locked in proper position at the end of the stroke.

According to certain features of this invention, there is provided a paWl associated with each dial-wheel, which paWls engage the teethV on the modified gears carried by the dialwheels. Said pawls are pivotally mounted .upon a fixed cross-shaft and are simultaneously vibrated to permit the eseapement of one tooth at a time and thus control the speed at which` the Wheels'rnay be rotated. The

means .for vibrating the pawls is carried by the vgeneral operator and may include a camplate having the same number of teeth as the modified gear. The pavvls, however, are only vibrated bythe general operator during the forward stroke thereof, being spring-held in their ineffective positions during the returnstroke, so as to permit the free rotation of the Wheels when the carrying mechanism actuates. To this end there may be provided a one-Way pa-wl which is engaged by the teeth of the plate during the forward stroke of the general operator, the pawl idling over the teeth during the return-stroke of the general operator. j

In order to synchronize the movement of the pawls with that of the Wheels, there is provided a novel mechanism which is effecthe wheels are positively connected at allshowing certain parts thereof in their normal for adjusting the d ial-wheel-lockingmechanism relatively to the general operator. 1

Figure 5 is an operating view showing the.

tive to positively move the pawl-vibrating cam-plate relatively tothe general operator. This provides for a very minute adjustment and is an excellent expedient to cheapen the manufacturing cost of such an intricate mechanism, since it permits the use of more liberal manufacturing limits. The plate may be positively locked in place after making the required adjustments.

This invention is especially suitable to be used in connection with a machine having means for preventing overcarrying during the return-stroke of the general-operator, 1 such as disclosed in the patent to Thornton, 1,228,148, dated May 29, 1917, because then times with the general operator and are thereby constrained to the movement thereof.

Other featuresandadvantages will hereinafter appear. I

In the accompanying drawings, v Figure 1 is a cross-sectional view, in elevation, of an Underwood-Hanson machine positions. Figure the dial-whcel-locking mechanism. l

Figure 3 is a side view showing the pawland-ratchet connection between the pin-carryin members and their associated dial-wheels. igure 4 is a side view showing the means position of the locking pawls when the general operator is moved sothat the pins in the' pin-bars are half a space ahead of the pinsetting bars.

Figure 6 i in the pin-setting bars. locking pawls are shownw in a position to prevent rotation of the wheels.

Figure 7 its'extreme forward position in which the pawls" positively prevent movement of the dial-wheels.

Figure 8 is a fragmentary operating view s a similar. viewshowing the 'pins showing the position of the parts during the Said:` machine has as a part of its regular` a letter-spacing mechanism 20 which is conreturn stroke of the general operator.

a machine of the Underwood-Hanson type.

equipment a' traveling carriage 10, upon which a platen 11 is rotatably mounted by means 4of an axle 12. The mac inealso has a series of character-keys 13 and a row of numeral-keys 14. The numeral-keys 14. are mounted on key-levers 1.5,' rockably mounted atl16, and are effective, by 'means of bellcranks 17, to swing corresponding type-bars 18. The carriage is letter-spaced by means of trolled by a universalbar 20a.l

Each of the key-levers 15 is provided 'with a link 19 which actuates, by means of an asso- 2' is a fragmentary plan view ofto thereby. carry In, f `this view the shows the general operator near This invention is illustrated as applied to.

ciatedarm 21, a co-operating cross-bar 22 movably mounted on a setting frame 23.

Each of thefcross-bars22pis effective to' setone of a series of digit-pins 24 on pin-carrying members 25. However, in order that a pin may be set, it is first necessary to advance tion. To this end, the machine is provided with equipment at 'the rear of the' carriage which 'consists of selectors 26which are elecontrol rollers v27. Said selectors are. provided with cams-28,*which, when the selectors are in their effective positions, contact-with levers 29, rockably mounted-at 30. The' levers 29 are o eratively connected to the pin-carrying mem ers 25 by means ofselecting rods 31 and levers 32, pivotally mounted' at 33. Theforward ends of the' levers 32 engage transposing devices 34, which, in turn, are operatively connected to small bell-cranks35, which engage pins 36 fasttof the pin-carrying'members25.

The' pin-carrying members 25 have racks 40, at the 'frontthereof, which engage with gears `41, to thereby vrotate dial-wheels 42,

havingindications thereon visible through a 'motor and associated mechanism, not shown.

When the machine is operated by either method at a high rate of speed, thecross-bar 45 strikes the pin-bars with considerable impact and hencethe dial-wheel associated therewith maybe thrown ahead of the general operator, due to the one-way pawl-andratchet connections 48, 49, provided between each dial-wheel and each pin-bar (see Figure 3). Since the safe limit at which this machine can be operated is largely controlled bv the speed at which the general operator can be moved, without overthrowing the pinvbars, there is provided interlocking mechanism for the purpose of constraining the overthrow of the dial-wheel.

Saidv mechanism includesr a series of lockwhich have been depressed vthe pin-carrying member 25 to setting posivvated to effective, positions by meansof zoneing pawls, levers or dogs 46, which are rockably mounted on a cross-shaft 47, the pawls being held in the positions shown in Figure 5 by means of springs 47a. The forward ends of the pawls 46 areprovided with toes 50 designed to engage between teeth 51 of a modified gear carried'b'y the wheels 42. All the levers 4 6 are simultaneously vibrated by mechanism which includes a shaft 52, an arm 53 and a series of bail-pieces 54. The arm and the bail-pieces are secured to the shaft 52, the latter engaging hooks 55 under the pawls 46. In order that the levers 46 may be vibrated during the forward stroke of the general operator while being held idle during the return stroke thereof, there is provided a one-way pawl 56 which is normally held in the position shown in Figure 5, by means of a spring 57. The pawl 56 engages with a plate 58 carried by the general Operator. the plate being effective to move the aim 58 upwardly when the general operator moves in the direction shown by the arrow 5t). In Figure 6 the pawls 46 are shown in a position to prevent rotation of the wheels 42, the toes 50 being shown in the path of the teeth 5l, in which position the pawls are held by the action of the arm 53, which is swung upwardly when the pawl 56 is elevated by engagement with teeth 63 on the plate 58. The position of the pawls 46, shown in Figure 7, indicates the eXtreme position of the general operator, in which position the arm 53 is swung higher by means of a tooth 60, to thereby force the toes 50 further between the teeth 5l.

The return movement of the general operator is indicated by an arrow 6l in Figure 8. In said figure, the pawl 56 is shown riding idly over the teeth 63 of the plate 58, while the arm 53 is held in its ineffective position, by means of a spring 64. Said spring 64 is stronger than the spring 57, which is mounted between spring-studs 62 and 62a respectively secured to the pawl 56 and the arm 53. The arm 58 is held in its normal position against a pin 65 by the spring 64;

In order to synchronize the movement of the pawls 46 and the wheels 42, which move relatively to the general operator, means are provided for making adjustment between the plate 58 and the general operator. Said plate has slots 69 (Figures l and 4) and is slidably mounted on studs 66 and '70 fast to the general operator. The stud 66 carries an eccentric disk 67 designed to engage a pin 68, fast to the plate 58, so that, by rotating the eccentric disk 67, the plate may be moved relatively to the general operator. After making t-he desired adjustments, the plate is locked in position by means of nuts 7 0il at the ends of the studs 66 and 70.

The bail-pieces 54, which are secured to the shaft 52 by means of screws 71', are not vibrated during the return stroke of the general operator. However, the levers 46 are effective to lock the wheels and prevent overrotation thereof during the carrying of tens into the Wheels of higher denominational order. To this end, the levers 46 are provided with rearwardly-extending ngers 74,

which are engaged by locking cams at predetermined positions of carrying cams 73,

mounted on a cross-shaft 72. It is well known that the shaft 72 is rotated during the return movement of the general operator, being idle during the forward movement thereof. The mechanism just described is more fully disclosed in said patent to Thornton.

Since it is desired to positively lock the wheels 42 when the machine stands in its normal position, and since neither the plate 58 nor the locking cams 75 are effective to swing the levers 46 to their locking positions when the general operator is in its normal or eX- treme rear position, there is provided a cam v or roller 76, rotatably mounted upon a stud 77, carried by the general operator. Said roller engages with an arm 78, fast to the shaft 52, and is effective to rock the shaft and the bail-pieces associated therewith, and in turn swing the pawls to their eifective or locking positions as shown in Figure l.

Each dial-wheel is provided with an associated 'detent'ing pawl 79 which isheld in engagement between the teeth 5l of the modified gear, to thereby position all the wheels in alignment with each other. Said pawls are held in their effective positions by means drive mechanism connecting each registerbar with its dial-wheel, and a general 'operator therefor, the combination of a dial-wheelcontrolling device vbratory throughout the rotation of the dial-wheels to prevent overrotation thereof, the general operator being connected'to simultaneously actuate the register-bars and vibrate the controlling device.

2. In a typewriting and computing machine having register-bars with pinions in mesh with said bars to rotate dial-wheels having detcnting tooth-spaces, and a general operator for said bars, the combination of control-levers for engaging the tootl'i-spznces` of the dial-wheels, and a controlling device connected to the general operator to actuate and vibrate the control-levers in and out of said tooth-spaces during the rotation of the dial-wheels, to prevent over-rotation thereof.

3. In a typewriting and computing machine having registering devices including d ial wheels, register bars, intermediate mechanism for transmitting one-way movements from the register-bars to rotate the dial-wheels, and a genera-l operator, the coml pawls engageable With '.the teeth of the .Wheels, and means movable with the general biiiation' of dial-Wheel-con-trolling a devices -vibratory'throughout the rotation of the dial- Wheels toh prevent over-rotation thereof, the' general operator simultaneously actuating the register-bars and the controllin@r devices and an adj ust-ing device for c acli"controlling device to adjust the same to" synchronize the actuation of the controlli-ng device With the rotation of the dial-Wheels.

4:. I n aA computing machine including varegister having denominational Wheels, pincarrying members, numeral-keys for` selectively setting the pins, anda general operator having a cross-bar Jfor engaging the pins )set in-said p inecai'rying members to rotate said Wheels, the combination of means for i r constraining the movement of the wheels to the Wheels to the movement of the general operator, said means includinga series of operator for limparting to said pavvls a rock;- ing movement effective to clear the teeth of said gears only as required to permita normal movement of rotation..

v6. Iii a computing mechanism including a register having denominationalvvheels, pincarrying. members for rotating said Wheels,

' numeral-keys for selectively setting the pins on said pin-carrying members, and a general operator having a cross-bar for the. pin-carrying members, combination of therota-tion vof each Wheel to the movement l ofits associated pin-carrying member, .in-

cluding a paWl vibrated into interlocking engagement with each Wheel throughout the movement of its pin-carrying member.

7. In a coinputingmech'anism including a register having denominational Wheels, pincarrying members numeral-keys for selectively setting the pins, and a general operator for the pincarrying members, to rotate said wheels', the combina-` tion of mechanism for constraining the rotation of each Wheel to the movement of its associated pin-carrying member, including a pawl, a controlling device eiective to siinultaneously control all the pawls, and means for operatively connecting said controlling device with the general operator in a manner to actuatethe pawls in the forwardstroke of the general operator,-bu t holding the pawls the combination ofmeans for constraining the movement of torotate said Wheels, the` mechanism for constraining for rotating said Wheels,

return stroke of the general operator.

8. In a computing mechanism including a register having denominational Wheels, pincarrying members,numeral-keys'for selectivey lyisetting the pins on said pin-carrying members, and a general operator for the pin-carrying members, to rotate sai'dwheels, the combinationof mechanism for constraining the rotati'on'of eachwheel to the movement of its associated p iii-carrying'meniber, including a paWl, a controlling device effective to simulin their ineffective positions throughout the taneously control all the paWls, and means for operatively vconnecting said controlling device ivlth the general operator in a manner to'actua't-e the pawls in the forward stroke of the general operator, but holding the pawls in their ineiiective .positions during the return strolreof thegeneral operator, said means including a rack carried by the general operator, a sha-ft upon which the controlling device is rockably mounted, an 'arm on said shaft, and a one-Way pawl carried by said arm to be vibrated by the rack.

9. In a computing mechanism having toothed register-wheels, pin-carrying members for each Wheel, a general operator for 'the pin-carrying members, a vpaWl-and-ratchet mechanism for operatively connecting the vWheels andthe pin-carrying members dur# ing the forward movement ot' the general operator` and detentingpawlsfor engaging the teeth of the Wheels'tol align said Wheels and to "prevent rotation thereof `'during the return movement of the general operator, the combination of mechanism for preventing the fivheelsvfrom runningahead of their associated pin-carrying members throughout the forward stroke of the general operator, said last-mentioned mechanism including a series ofroclrable locking levers and means con trollcd by the general operator for imparting to said levers a rocking movement effective to interlock with the teeth of said Wheels in a manner to'permit the escapement of only as many teeth as will correspond to the driving movement of their associated vpin-carrying members.

10. In a computing mechanism having toothed denominational Wheels, denominational bars associated with said Wheels, and a general operator for moving the bars-to io tate the wheels, the combination of means for preventing over-rotation of the Wheels, said means including locking levers movable in and out between the teeth of said Wheels, springs for holding the locking levers in their ineffective positions, 'and interruptive means carried by the generaloperator for continu! 11. In a computing mechanism having toothed denominational Wheels, denominational bars associated with said Wheels, and -a general operator .for moving the bars torotate the wheels, the combination ofmeans for preventing over-rotation of the wheels, said means including locking levers movable in and out between the teeth of said wheels,

springs for holding the locking' levers in their mounted on said arm, the plate having a series of cams to successively engage the pawl during the forward movement of the general \operator in a manner to rock the shaft, and impart a rocking movement to the pawl between the teeth of the wheels.

12. In a computing mechanism having toothed register-wheels, pin carrying members for each wheel, a general operator for the pin-'carrying members, a pawl-andratchet mechanism for operatively connecting the wheels and the pin-carrying members during the forward movementof the general operator, and detent-pawls for engaging the teeth of the wheels to align said wheels and to prevent rotation thereof during the return movement of the general operator, the combination of mechanism for preventing the wheels' from ruiming ahead o their associated pin-carrying members during the forward stroke of the general operator, said last-mentioned mechanism including a series of locking levers having interruptive movements between the teeth of said wheels, said movements being imparted to the levers by cams movable with the general operator during the forward movement thereof that become ineffective during the return movement of the general operator.A

13. In a computing mechanism having toothed denominational wheels with carryover mechanism, denominational bars associated with said wheels, and a general operator for moving the bars, to rotate the wheels,

the combination-of means forpreventing over-rotation of the wheels, a locking lever movable in and out'betwe'en the teeth of each l`lwheel, means for siinultaneousljVY vibrating all the levers between the teeth of the wheels sociated wheel by means of a ratchetanda pawl in a manner to rotate the wheels during the forward movement of the general operator, the combination of a series of locking levers controlled by the general operator throughout the forward movement thereof, for positively controlling the rotation of the wheels. preventing over-rotation thereof, said means including a rock-shaft having a universal member fast thereto, said member being connected with the locking levers in a 'manner to vibrate the levers in and out between the teeth of said wheels, and means foroperatively connecting said rock-shaft with vthe general operator in a manner to rock the shaft only during the forward movement of the general operator.

15. In a computing mechanism having' toothed denominational wheels, denominational bars associated with the wheels, and a general operator for actuating said bars, each bar being operatively connectedto its associated wheel by means of a ratchet and apawl in a manner to rotate the wheels during the forward movement of the general operator, the combina-tion of a series of locking levers engageable with the teeth of said wheels, interlocking 'means vibrated by the general operator throughout the forward movement thereof, for controlling the rotation of the wheels and reventing over-rota- Htion thereof, and means for positively lock- '.ing all the wheels when the 'general operator reaches its full forward stroke.

16. In a computing machine having a series of registering wheels, a general operator connectible for rotating said wheels selectively miscellaneous distances, and individual locking dogs for said wheels, said wheels having toothed or notched portions to eo-operate with said locking dogs, the combination with said wheels, of mechanism dependent upon the forward movement of theA general operator to prevent overthrow of each wheel, said mecha- `nism including a rack on the general operator having motion-conveying toothed spacings timed to the unit-spacings of the registering-wheels.

17. In a computing machine having a series of registering wheels, a general operator connectible for rotating said wheels selectively miscellaneous distances, and individual locking dogs for said wheels, said wheels having toothed or notched portions to co-operate with 'said locking dogs; the combination with said wheels, of mechanism dependent upon the forward movement'of the general operator for preventing overthrow of each wheel, said mechanism including a rack on the 'general .operator having motion-conveying toothed spacings timed to the unit-spacings of the registering wheels, and a pawl engageable by the teeth of the rack and operatively connected to convey a step-by-step wheel` locking movement throughout the forward movement of the general operator.

18. In a computing machine having a series of normally locked registering'wheels, and a general operator connectible for rotating said f Wheels individually through predetermined '5 unit distances of one to nine, the combination with the wheels, of mechanism dependent upon the movement ofthe general operator andV effective to rst release the Wheels and then successively lock the Wheels during 10 each subsequent accumulation of single units to prevent the overthrow or"l individual Wheels.

19. In a computing mach-ine having a series of normally locked registering Wheels, and a general operator` connectible for rotating said Wheels individually through predetermined unit distancesof one to-nine5 the combination with the Wheels, of mechanism dependent upon the movement of the general operator 2o and eiective to first release the Wheels and thensuccessively lock the wheels during each subsequent accumulation of single units to preventthe overthrow of individual Wheels, said mechanism including a Wheel-locking rack effective during the movement of .the

general operator in one direction to temporarily lock all the -Wheels and 'a Wheel-locking cam effective during the return movement of the general operator to permanently lock ally the Wheels.

20. In a computing machine having a series of registering Wheels normally locked to prevent idle rotation, and a general operator connectible for rotating said Wheels computatively through predetermined units of dis-l tance. the combination with the Wheels, of mechanism dependent upon the continuous forward movement of the general operator in registering a succession of units, to release 40, and relock the Wheels during the registry of each unit to prevent overthrow of the Wheels. A

` 21. In a computing machine, having a series of registering Wheels normally locked to pre- 5 vent idle rotation, and a general operator connectible for rotating said Wheels computatively through predetermined units of distance, the combination of mechanism dependent upon the continuous forward movement o-the general operator in registering `a succession of units7` to release and reloclr the Wheels during the registry of each unit to prevent overthrow of the Wheels, said mechanism including a rack on each Wheel-and individual rack-locking paWls vibrated by the general operator during each unit of its travel to successively release and lock the racks. O'ITO THIEME.

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