US1623995A - Apparatus for driving typewriters provided with calculating mechanism - Google Patents

Apparatus for driving typewriters provided with calculating mechanism Download PDF

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Publication number
US1623995A
US1623995A US726403A US72640324A US1623995A US 1623995 A US1623995 A US 1623995A US 726403 A US726403 A US 726403A US 72640324 A US72640324 A US 72640324A US 1623995 A US1623995 A US 1623995A
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US
United States
Prior art keywords
locking
motor
spring
power
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US726403A
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English (en)
Inventor
Buschmann Theodor Eugen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joh Winklhofer Beteiligungs GmbH and Co KG
Original Assignee
Wanderer Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wanderer Werke AG filed Critical Wanderer Werke AG
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Publication of US1623995A publication Critical patent/US1623995A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C23/00—Driving mechanisms for functional elements
    • G06C23/06—Driving mechanisms for functional elements of tabulation devices, e.g. of carriage skip

Definitions

  • the subject matter of this invention consists of a mechanical driving apparatus for typewriters provided with calculating mechanism, which is maintained by an external supply of power in constant working readiness for instantly giving power to the calculating mechanism gear.
  • the invention is designed to solve the problem of so constructing the power-storing device as to enable 1t to receive and give out the largest possible amount of power, of protecting it and its gear against all external influences and coupling it to the driving motor in a readily the throwing of the motor into and out of driving operation being affected automatically by the power-storing device.
  • a pluralit for instance two, coiled ribbon springs arrange in series with one another, together with the appurtenant gear for supplying and giving out the power, are accommodated in a closed casing in which all the parts can run in oil.
  • This casing which is preferably of tubular form, is lengthened for the reception of the electric motor which is inserted in the casing and is fastened in place by a bayonet joint and is connected by a simple coupling to the gear of the power-storing device.
  • Fig. 1 is a vertical cross section
  • Fig. 1 shows the bayonet joint
  • Figs. 1 1 and 1 are detail. views to a larger scale showing the means for coupling the motor to the powerstoring device;
  • Fig. 2 is a horizontal section of Fig. 1;
  • Fig. 2 is a section through a detail
  • Fig. 3 shows the switch when the current is interrupted
  • Fi s. 3 'sh0w switc Fig. l shows the switch when the circuit is closed
  • Fig. 5 shows the circuit-closing terminal with motor contact springs
  • Fig. 6 shows the power-spring locked
  • Fig. 7 shows the same ready for operation
  • Figs. 8' and 9 show the mechanism for actuating the locking shafts
  • Fig. 10 is an elevation of the automatic switch
  • Fig. 11 is a section thereof.
  • the apparatus (consisting of the powerstoring device with appurtenant gear) for driving the typewriter provided with calculating mechanism is accommodated in a divided casing 6 which is closed by covers 7 and 8 and allows of being charged with lubricant.
  • This casing is furthermore lengthened in tubular form, or it carries a tube 1, with removable covers 2 and 4:, which is traversed by the bearing plug 73 whereby the casing and the tube are held together.
  • This tube serves for the reception of the driving motor 5 which is broughtinto and maintained in its working position by being simply inserted and turned round with the help of a bayonet joint; having studs 62, 62 ot different thickness for ensuring, correct positioning of the motor.
  • the projecting end of the shaft of the driving motor is provided with a driving disc 10 which transmits the rotary motion to the wormshaft 11 by means of driving pins 10 which engage projections 11 provided on a two-armed driver fixed on the shaft 11.
  • driving pins 10 which engage projections 11 provided on a two-armed driver fixed on the shaft 11.
  • the pinion l3 drives the spur-wheel jl l fixed to the sleeve 15 which is loose on the shaft 18 and on which the inner coil of the coiled ribbon spring 16 is mounted.
  • the outer coil is mounted on the spring box 17 by means of a pin or the like.
  • the socket 19 which is likewise loose on the shaft and which is connected by the sleeve 19 to the inner coil of the spring 20, whilst the outer coil of this spring is mounted on the spring box 2i likewise by means of a pin or the like fastening.
  • the box 21 is mounted on the shaft 18 or socket 19 by means of a socket 18" and sleeve 19 and is fixed to the spurwhcel 22.
  • the drive for the calculating mechanism is taken from the spurwheel 22 first through the pinion 23 fixed on the shaft 25.
  • the toothed wheel 26 likewise fixed on the shaft transmits, through the toothed wheel 27, motion to the shaft 28 and from the latter the clastic shaft 31 of the typewriter calculating mechanism is driven through the wheels 29, 30.
  • the transmission of the power may be effected even without exact coincidence of the centers of the bearings.
  • this spring is int-ended to pr-vent overstrain of the dr ving gear because in such a case the spring 74 will be screwed-up and thus interrupt the transmission.
  • spurwheel. 32 which is mounted loose on the shaft 28 and carries on its extended hub a worm
  • wormwheel 34 fixed on the locking shaft 35 which terminates outwards in a slotted head 40.
  • the outer coil is coupled to the switch casing 52 fixed on the switch shaft When the switch is held fast (Fig. i), the coiled ribbon spring 38 of the switch is being constantly wound.
  • the outer coil of the spring is furnished with a rivet head 38 (Fig. 2), Whilst the inner periphery of the switch cas- V as already on ing 52 has corresponding notches 521.
  • the outer diameter of the spring is reduced by the winding, so that the rivet head is enabled to jump out of its notch, and, by snapping into one of the next notches, it can effect a diminution of the strain. In this manner the switclndriving spring 38 is always maintained under uni form strain by the drive.
  • Any suitable external source of current 7a is connected to the network terminals 68 and 69 (Fig. 5).
  • the terminal'68 is connected directly to the one circuit-closing spring it), whereas a lead goes from the terminal 69 to the longer spring 48 of a 8i pair of contact springs 48, L 8 of the rotary switch.
  • the short 1' contact spring 48 (which is insulated from the former) is connected by the lead 67 to the circuit-closing spring 49* Current conveying pins 64.
  • lo- H cated on the driving motor are adapted to come into Contact with the contact prings 49, 49, when the motor is inserted into the casing.
  • a rotary switch whose position controlled by the drivin motor 5, opens and closes the current supply circuit automatically according to requirement.
  • T he rotary switch 39 consists here of three switch blades fixed on the switch shaft 53 by means of insulating washers, and of the two contact springs 48 and 48
  • the position of the svitch blades 55 is regulated by a lo king star-wheel 5 with three locking teeth, which is fixed on the switch shaft 53 and co-operates with the heads of locking shafts projecting from the driving casing.
  • two such locking shaft heads 40, 4E3 are provided.
  • the locking shaft head lt) is connected to the winding member of the driving mechanism as already described, and therefore rotates only when the driving motor is in operation.
  • the other locking shaft head t? is connected to the unwinding member of the driving mechanism of the power-storing device.
  • the mainspring 20 in running down, produces rotation of the locking shaft 42, that is, of its locking shaft head 43, in the direction of the arrow, and the locking tooth. 54 bearing outside against the locking shaft head 43 slips finally into the slot of the locking shaft head with the shaft, that continues to rotate, into the position shown in Figure 3".
  • the locking shaft end 42 is unable to hold back the locking tooth 54, and, owing to the action of the spring 38, the switch shaft 53, and with it the locking star wheel 54, is rotated until the preceding locking tooth 54 strikes the locking shaft head (Figs. 3 and 4).
  • the switch body with one of its blades has closed the circuit between the two contact springs 48 and 43, and by switching-in the electric motor effects the winding-up of the main springs 16, 20.
  • the locking shaft is also rotated at the same time as this winding-up is being effected.
  • the locking tooth 54 slips into the slot of the locking head 40, and moves, together with the locking head 40 that continues to rotate, into the position shown in Figure 3.
  • the locking tooth 54 cannot now be held any longer by the locking head 40, and by the action of the spring 38 the switch shaft 53, and with it the locking tooth 54, is rotated until the preceding locking tooth 54 strikes the locking shaft head 43. In this movement the switch blade is pulled out from the contact springs and the circuit is broken of the motor 5.
  • the locking shaft 35 remains also at rest, and retains the locking head position shown in Figures 3 and 3 whilst the locking shaft 42 rotates in a counter-clockwise direction according to the use of the calculating mechanism. Since the locking shaft 35 rotates very much faster than the locking shaft 42, a certain amount of time will always elapse between the switchings-in of the current. In any case the locking tooth, together with the respective locking head, must execute a small rotation before it canmake a further jump forwards.
  • a locking device for the main spring is provided.
  • This locking device is set in operation by the switch, when, on the occurrence of an interruption of the external current supply, the switch continues to remain in an adjusted position (Fig. 4) whilst the calculating mechanism is being further used. At the same time an alarm indicates the locking of the driving apparatus.
  • a pawl lever 46 On a shaft 44 (Fig. 2) there is fixed a pawl lever 46 which is adapted to fall into a groove 56 (Figs. 6, 7 of the main-spring box 21 for the purpose of locking the driving apparatus.
  • the locking is determined by pins 52 which are provided on the switch casing 52 and act upon a pawl 47 which is loose on the shaft 44 and is pressed by a spring 44 against one of the pins 52.
  • one of the two series-connected coiled ribbon springs receives the power that is supplied, whilst the second spring gives out the power, so that thereby the entire gear is considerably simplified and rendered easy to control.
  • the supply of power is here regulated entirely automatically by the gear of the power-storing device, in such a manner that the running-clown part of the gear that is, the part giving out power, interrupt-s the supply of the power.
  • the spring gear is prevented from running down completely as above stated; this being effected with the aid of the two levers 16, 47 which are mounted on the shaft a l and are connected together by the spring 443.
  • the shaft 4st carries also the alarm disc 45 which by its weight has a constant tendency to rotate the shaft 44, so as to cause the lever 46 to come agains" the periphery of the spring box 21.
  • the pawl 47 is influenced, as stated, by the pins 52 on the rotary switch casing 52,
  • the rotary switch has three locking teeth 54 one of which always strikes one of the locking member-s 4.0 or after onesiXth part ofa revolution of the rotary switch.
  • the rotary switch spring box 52 carries three pins 52 (Figs.
  • a mechanical driving apparatus for typewriters provided with calculating mechanism, comprising a driving motor, a powerstoring device for operating the calculating mechanism operatively connected with the said driving motor, in combination with a carving for containing and enclosing said power-storing device with its gear and having a tubular extension for housing the driving motor, driving means for coupling the driving motor up to the power-storing device, said means being capable of coming into engagement when the driving motor is inserted into the tubular extension and of moving out of engagement again when the motor is withdrawn from said eXtension, means for securing the driving motor in its working position inside the tubular extension and means for closing the end of the tubula' extension.
  • a mechanical driving apparatus for ewriters provided with calculating mechani in, comprising a driving motor, a powerstoring device for operating the calculating mechanism consisting of a'pl'urality oi ⁇ seriesconnected coiled ribbon springs, said storing device being operatively connected with the said driving motor, a casing for containing and enclosing said power storing device with its gear and having a tubular extension for housing the driving motor, driving means for coupling the driving motor up to the power-storing device, said means being capable oi coming into engagement when the driving motor is inserted into the tubular extension and of moving out of engagement again when the motor is withdrawn from said extension, means for securing the driving motor in its working position inside the tubular extension and means for closing the end of the tubular extension.
  • a mechanical driving apparatus for typewriters provided with calculating mechanism, as set forth in claim 1, having a rotary switch fort-brewing the driving motor into and out of operation, a spring capable of being wound up by the driving motor for actuating said rotary switch and means controllable by the power-storing device and the motor for retaining the switch alternately in a position for connecting the motor to a source of energy for operating said motor and in a position .ior disconnecting the motor from said source of energ i.
  • a n'iechanical driving apparatus for typewriters provided with calculating mechanism as set forth in claim 1, having a rotary switch comprising a plurality of switch blades, contact springs intended to coact with said switch blades for connecting the motor to a source of energy for operating said motor, a spring capable of being wound up, by the driving motor for actuating said rotary switch, means for retaining the switch alternately in a position for connecting the motor to a source of energy for operating said motor and in a position for disconnecting the motor from the said source of energy, said means comprising locking teeth provided on said rotary switch, one locking tooth for each switch blade, a rotatable looking member capable of engaging said locking teeth for arresting the rotary switch with a switch blade in engagement with a contact spring, means for operatively connecting said locking member with the driving motor, including a driving member provided on the power input side of the powerstoring device, a.
  • rotatable locking member 43 capable of engaging said locking teeth for arresting the rotary switch wit-h the switch blades out of engagement with the contact springs, means including a driving member provided on the power output side of the power storing device for rotating said member, and slots provided in said locking mem bers for allowing the locking eeth to pass through for enabling the rotary switch to move.
  • a mechanical driving apparatus for typewriters provided with calculating mechanism as specified in claim 1, having currentconveying pins located on the driving motor and circuit-closing springs located on the casing of the power-storing device, said pins being intended to come into contact with saidcircuit-closing springs when said motor is inserted into said casing.
  • a mechanical driving apparatus for typewriters provided with calculating mechanism as set forth in claim 1, having a rotary switch for throwing the motor into and out of operation, a rotatable spring box provided on the power output side of the power storing device for transmitting the power to the calculating apparatus, means for locking the power-storing device when the motor breaks down, said means comprising a notch provided in said spring box, a lever capable of engaging in said notch, means for urging said lever into contact with said spring box and means actuable by the rotary switch for raising said lever from the spring box for preventing said lever from engaging in said notch and an alarm signal connected to said lever for indicating when the power-storing device is locked.
  • a mechanical driving apparatus for typewriters provided with calculating mechanism as set forth in claim 1, having a spring interposed between the power-storing device and the calculating apparatus for transmitting the power from the former to the latter.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Lock And Its Accessories (AREA)
US726403A 1923-11-08 1924-07-16 Apparatus for driving typewriters provided with calculating mechanism Expired - Lifetime US1623995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE109516X 1923-11-08

Publications (1)

Publication Number Publication Date
US1623995A true US1623995A (en) 1927-04-12

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ID=5651757

Family Applications (1)

Application Number Title Priority Date Filing Date
US726403A Expired - Lifetime US1623995A (en) 1923-11-08 1924-07-16 Apparatus for driving typewriters provided with calculating mechanism

Country Status (4)

Country Link
US (1) US1623995A (da)
AT (1) AT100815B (da)
CH (1) CH109516A (da)
DK (1) DK35890C (da)

Also Published As

Publication number Publication date
CH109516A (de) 1925-04-01
DK35890C (da) 1926-04-19
AT100815B (de) 1925-08-25

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