US2220030A - Record making machine - Google Patents

Description

Oct. 29, 1940. o. J. SUNDSTRAND RECORD MAKING MACHINE Fil ed June 16, 1938 4 Sheds-Sheet l OSCAR J. SUNDSTRAND M29. 1940. o. J. SUNDSTRAND 2,220,030

RECORD MAKING MACHINE 'Filed June 16, 1938 4 Sheets-Sheet 2 INVENTOR OSCARJSUNDSTRAND Oct. 0 29, 1940. o. J. SUNDSTRAND 2,220,030

RECORD MAKING MACHINE Filed June 16, 1938 4 sheets-sheet a INVENTOR OSCARJSUNDSTRAND z I BY /64 Oct. 29,1940. SUNDSTRAND 2,220,030

RECORD MAKING MACHINE .Filed June 16. 1938 4 Sheets-Sheet 4 INVENTOR OSCAR J. SUNDSTRAND TTOR N EY 7 Patented a. 29, 1940 UNITED STATES PATENT OFFICE RECORD MAKING MACHINE Oscar J. Sundstrand, Hartford, Conn, assignor to Underwood Elliott Fisher Company, New York,

N. Y., a corporation of Delaware Application June 16, 1938, Serial No. 214,008

13 Claims.

10 of the machine. In orderto prevent waste of power such machines have been provided with mechanism of various constructions for cutting oil the current from the motor when the machine is idle for a predetermined interval. The present invention relates to a mechanism for this purpose which will be hereinafter referred to as an automatic motor cut-out. Certain objects of the invention are to improve and simplify'the construction and mode of'operation of automatic motor cut-out mechanisms and to provide machines of the general ,class above indicated with a novel and improved'mechanism for breaking the inotor circuit when the machine is idlefor a predetermined interval. Another object of the invention is to provide machines of the above class having printing mechanism and a' carriage, which is moved to position relatively the printing mechanism and the work sheet or sheets, with an automatic mo- 30 tor cut-out mechanism controlled by the movemechanism for cutting oi the motor circuit when 35 the machine is out of operation for a predetermined interval. I

Another object of the invention is to provide, for typewriting and other machines having a type carriage which is moved. to locate relatively the typing mechanism and the work sheet or sheets, an automatic motor cut-out mechanism for cutting oil the current from the motor when the carriage is idle for a predetermined interval.

. With-the above objects in view the invention consists in a mechanism embodying the 'novel' 55 shown. t

- upon which is assembled the usual printfii In the drawings:

Fig. 1 is a perspective view looking from the front of the mechanism and illustrating the motor cut-out mechanism applied to a' typewriting machine of the Elliott Fisher type.

Fig. 2 is a perspective view looking from the rear and illustrating particularly the carriage return mechanism of the machine, a

Fig. 3 is a detail plan view illustrating particularly the mechanism for advancing the carriage,

Fig. 4 is a view-in side elevation illustrating the mechanism shown in Fig. 1,

Fig. 5 is a detail view in front elevation illustrating certain of the parts shown in Fig. 4 in the same positions as'in said figure,

Fig. 6 is a view inside elevation illustrating a portion of the mechanism shown in Fig. 4 with certain of the parts in difierentpositions,

Fig. 7 is a view similar to lg. 5 illustrating the parts in the same positions as in Fig. 6. 20. Fig. 8 is a view similar to Fig. 6, showing certain of the parts in still-different positions;

Fig. 9 is a view in rear elevation illustratingthe automatic motor cut-out mechanism with the parts in substantially the positions shown in Fig. 4,

Fig. 10 is a view similar to Fig. 9' illustrating the parts in substantially the positions shown in Fig. 6, and i t Fig. 11 is a perspective view illustrating cer'- tain of the parts shown in-Fig. 1 taken from the. opposite side of the mechanism. 7 I

- The invention is illustrated in this application as applied. to.,a typewriting machine of the Elliott Fisher type havingfsubstantially the same general construction, arrangement and mode of operation of the parts as the machine shown in the patent to Foothorap No. 1,904,127,,dated Y April 18, 1933. Only so much of the machine shown in said patent as relates particularly to 40 the present invention is illustrated and described in-this application. r

The machine is provided with the usual platen frame. Mounted to travel overth'e platen longi- Y tudinally of the, platen frame is a line space frame, only a. portion of which is illustrated in this application. Upoh the line space frame is mounted to travel; transversely of the platen, upon suitable guide rails, a type or key carriage g mechanism operated bykeys. The platen frame, the line space frame and the type or key carriage, except for certain driving connections herein described between'the motor and. the carriage return shaft, preferably mare substantially the will be moved to the right by' the action'of the 30 of the key carriage. Meshing with this rack is same construction, arrangement and mode of operation as the corresponding mechanisms illustrated and described in said Foothorap Pat frame of which the rear rail is indicated at 4.

The carriage is provided with'the usual series of wheels or rolls for engaging said rails, one of which, indicated at 6, engages the rear rail 4.

The carriafisqnoved along the rails of the line space fra e in a right hand direction during the operation of the machine by means of a flexible band 8 attached at one end by means of a bracket ID to the carriage which band is wound about the usual spring drum II mounted upon a bracket l2 attached to the-rail 4. The drum is acted upon by a spiral spring (not shown) which tends constantly to turn the same in a counterclockwise direction (Flg. 3) and to move the type carriage along the rails in a right hand direction. Upon the depression of any of the type keys, the tabulating key or the release key, the carriage spring drum H, on the tape or band 8.

The machine is provided with the usual carriage return rack l4 secured to the flanged ,rear end of the apron l6 projecting from the deck l8 a carriage return pinion secured to a sleeve 22 rotatably mounted on and slidable longitudinally of the carriage return shaft 24. To the rear end of thissleeve is attached a clutch member 26 arranged to engage a cooperating clutch member 21 fixed to the carriage return shaft.

The mechanism for driving the carriage return shaft comprises a spur gear28 secured to the rear end of said shaft, a spur gear 29 attached to the rear end of a counter-shaft 30 and meshing with the gear 28, a bevel gear 32 secured to the forward end of the counter-shaft 30, and a bevel gear 34 fixed to the shaft 36 extending siibstantially parallel with the carriage guide rails, said gear meshing with the gear 32. To the shaft 36 adjacent one end thereof is attached a spiral gear 38 meshing with a spiral gear 40 fixed to'a short shaft 42 arranged substantially parallel with the shaft 36. Upon the shaft 42 is secured a pulley 44 connecting said pulley with a pulley 46 fixed to the shaft 48 of an electric motor 50 suitably mounted on the line space frame and arrangedto run continuously during the operation of the machine. Through the gear connections dee scribed the carriage return shaft 24 is driven in a clockwise direction as indicated by the arrow (Fig. 2) to impart return movements to the type carriage. The shafts 24, 30, 36 and 42 are mounted'in suitable bearings carried by the line space frame.

When the carriage is to be returned to fully or partly returned position, assuming that the motor is running, the clutchmember 26 is engaged with the clutch member 21 and the pinion 20 is driven in a clockwise direction (Fig. 2) thereby moving the carriage in a right hand direction in said figure. The usual mechanism shown in said Foothorap patent is provided for moving the sleeve 22 longitudinally of the carriage return shaft 24 to engage theclutch member 26 with and to disengage said clutch member from the clutch member 21.

As shown in the drawings, an arm 52 fixed to a rock shaft 54 mounted on the line space frame is provided at its upper end with a roll engaging in a groove in the sleeve 22. To the shaft 54 is secureda second arm 55 and the sleeve 22 is normally held in position on the shaft 24, with the clutch member 26 disengaged from the clutch member 21, by means of a latch 58 pivoted loosely on the carriage return control rock shaft 60 mounted in bearings on the line space frame and extending in a direction substantially parallel with the direction of movement of the carriage, said latch being arranged to engage a contact piece on said arm. The arm 56 and the latch 58 are acted upon by a coiled spring 62 attached at one end to a pin 64 mounted on said arm' and at the other to a pin 65 mounted on the latch. The latch and arm are controlled to control the engagement of the members of the clutch by means of a tapered arm or fish tail 66 fixed to the shaft 60 and entered between the pins 64 and 65, these pins being held by the spring 62 in engagement with the opposite edges of said arm as shown in Fig. 2.

The position of the rock'shaft B0 is controlled by means comprising a bail 81' carried by arms 68 secured to said rock shaft, the bail extending substantially parallel With the rock shaft. This ball is rocked forwardly to engage the members of the clutch and is rocked rearwardly to disengage the same. Mechanism for rocking the bail forwardly by means of a key 68 is shown in this application. Mechanism (not shown herein) is preferably provided for rocking the bail forward- 1y automatically when the carriage reaches the end of a line of writing and for rocking the bail rearwardly automatically when the carriage reaches the limit of its returnmovement. The automatic mechanism and the key mechanism for rocking the bail preferably have substantially the same construction, arrangement and mode of operation asthe corresponding mechanisms shown and described in applicant's pending application Serial No. 149,571 filed June 22, 1937.

The circuit of the motor is illustrated diagrammatically by dot and dash lines. The current is received from any suitable source indicated at 69 and the conductors of the circuit are indicated at 10. In the circuit of the motor 58 is a switch 1| which is arranged to be manually operated. Means is provided for automatically opening the motor circuit after the lapse of a brief period, say, one or two minutes, following the last movement of the carriage, so that in the event that the operator fails to open the switch 1|, the motor will be automatically stopped. To this end a contact12 in the motor circuit is arranged to be withdrawn from a cooperating contact 13 in said circuit to break the motor circuit. The contact 12 is mounted at one end of a strip 14 of flexible, resilient conducting material bolted to an insulating block 15 mounted on a plate 16 secured to the ."lutch housing 11. The contact 13 is mounted on a similar strip 18 of metallic conducting material bolted to theinsulating block 15. Two of the conductors 10 of the motor circuit are connected respectively to the strips 14 and 18. The housing 11 is provided with brackets 19 secured'to a plate 80. and this plate is attached by means of screwsto the rear rail 4 of the line space frame.

The mechanism for withdrawing the contact 12 from the contact 13 comprises a lever' 82 pivoted at 84 on the plate 16 and having a stud 86 of insulating material projecting laterally from a downwardly extending arm on the lever so as to engage the underside of the strip 14 upon which the contact I2 is mounted. The down ward movement of the lever 82 is limited by means of a stop screw 88'secured. in the plate I6. Pivoted at 90 to the lever 82 is a link 92. This link is moved upwardly to disengage the contact I2 from the contact 13 by mechanism connected with a shaft driven continuously during the running of the motor.

This mechanism comprises a gear wheel 94 'rotatably mounted by means of a stud 96 on the plate 16 and meshing with a pinion I00 also rotatably mounted on said plate by means of a stud I04, the gear wheel being spaced from the plate by means of a spacing device I 0I. to the pinion I00 is a ratchet wheel I06 which is arranged to be turned by means of a dog I08 pivoted on'one arm of an oscillating lever IIO. A spring 2' tends to move the dog I08 in a direction to maintain the same in engagement with the ratchet wheel. The dog is moved longitudinally to actuate the ratchet wheel by the oscillations of the lever II 0. which is pivoted at II4 on the plate I6. The other arm of the lever is arranged to engage an eccentric II6 fixed to a gear wheel II8 rotatably mountedon the plate 16 by means of a stud I20, which gear wheel meshes with a pinion I22 secured to the shaft 36, the lever being held in contact with the eccentric by means of a coiled spring I24. The shaft 36 is rotated continuously. during the operation of the motor. By the mechanism described, the lever H0 is continuously oscillated during the operation of the motor and the ratchet wheel I06 is turned in a counter-clockwise direction (Fig. 4) by the action of the dog I08 thereby turning the gearwheel 94 in a clockwise direction. Because of the relative sizes of the gears 40 and 38, the pinion I22 and the gear l I8 and the pinion I00 and the gear 94, and btcause of the nature of the driving connection between the gear H8 and the ratchet wheel I06 the gear 94 is driven at veryv slow speed with relation to the speed of the shaft and the driving motor.

The link 92, under certain conditions, is held by a coiled spring I26 in engagement with a stop pin I28, in which position its lower end lies to the right (Fig. Hot the path of a pin I30 hereinafter described. The link is arranged-to be engaged at its right hand edge by a pin I29, projecting from the .face of the gear wheel 94,. at a certain point in the rotation of the gear wheel. By the engagement of said pin with the edge-of the link, the link is swung to the left (Fig. 4) into the path of the pin I30 projecting from the face of the ratchet wheel I06. By the engagement of this pin with the end of the link, the link is moved upwardly to disengage the contact 12 from the cooperating contact I3. I

The link 92' is supported .50 that it may be moved transversely of the plane of the gear 94 tO-carry the link out of thepaths of the pin I29 and the pin I30 and thereby throw the cut-out mechanism out of operation and to carry the link into the path of the pin I29 and thereby throw the cut-out mechanism into operating condition. To this end the link is loose upon the pivot by which it is connected to the lever 82 so that the link not only can swing about the axis of said pivot but can also swing in a direction transverse to the plane of the gear 94. The coiled spring I26 is arranged with its axis extending in a direction oblique to the plane of the gear 94 as shown in Figs. 9 and 10. This spring tends to move the link longitudinally downwardly, to the link to the right about the pivot Fixed 90 (Fig. 4) and also tends to swing the link transversely toward the gear wheel 94. A pin I32 mounted on the-inner face of the link is arranged to engage the outer faceof the gear wheel 94 to limit the movement of the same toward the gear wheel. Return movement of the ratchet wheel after each actuation thereof by the dog I08is prevented by means of an anti-return dog I34. I

The link 92, when held in a position adjacent lo the gear wheel 94 for more than a predetermined time interval, will be actuated by the pins I29 and I30 in the manner above described to disengage the contact I2 from the contact I3 and thereby break the motor circuit. The link is 15 swung away from the gear wheel 94 to carry the link out of the paths of the pin I29 and the pin I30 by mechanism controlled from the carriage 2. The means for swinging the link 92 in this manner comprises a lever I40 pivoted at I42 on m the plate I6 with which lever engages a laterally extending tongue I44 formed on the link. The lever I 40 is provided with an opening I46 into which the tongue I44 projects when the lever is in certain positions. When the lever I40 is in the position shown in Figs. 6 and 8, the tongue I44 engages in the opening I46 in the lever, allowing the link 92 to be positioned by the spring I26 with the link in the path of the pin I29. When the lever is swung from the position shown in these figures to the position shown in Figs. 1 and 4, the portion of the lever at the upper edge of the opening engages the tongue I44 on the link 92' and the link is thereby swung transversely outwardly to carry the same out of the path of the pin I29. The movement of the link- 92 is con? tinued by the movement of the lever I40 until the tongue I44 is carried past the lever and the inner end of the tongue rests against the side of the lever as shown, in Figs. 1 and i when the lever reaches its final position, the lever then holding the link outwardly out of the path of the pin I29. The lever I40 is swung from the position shown in Figs. 1 and 4 to the position shown in Figs. 6 and-8 by means of the pin I29 which is arranged to engage the lever in the manner shown inFig. 6, the lever having a curved surface I48 engaged by the pin. Thus the lever is moved into the position shown in Figs. 6 and 8 by the engagement of the pin therewith once during every revolution of the gear 94. when the lever is free to move, upon the disengagement of .the pin there-- from, it is moved back into the position shown in Figs. 1 and'4 by a coiled spring I50, its movement being limited by a pin I5I.

The movement of the lever back into the latter position is'controlled front the type carriage 2. .To this end, one arm of the'lever is connected by a link I62 ,witha lever I54 pivoted at I56 upon a projection on the plate I6. This lever extends to a position underneath the gear 20 through which the type carriage is actuated and a stop dog I58 is loosely pivoted at I60 upon the end of this lever. The stop dog is provided with a blunt ended stop arm I62 arranged to engage beneath the gear 20 when the lever I54 is depressed and the stop dog is in vertical position as shown in Fig. '71 The stop dogis provided with a weighted portion I64 which swings the stop doginto .vertical position when it is free to assume this position. When the stop dog is engaged by the gear 20 and the 'gear is rotated in one direction or the other, the stop dog is swung into an inclined position by the action of the gear as shown in Fig. 5.

The swinging of the lever I40 from the position 10 the gear 20.

shown in Figs. 1 and 4 to the position shown in Figs. 6 and 8 depresses the lever I54 and the stop dog I58 is thereby located in a position beneath This movement of the lever I40 also allows the link 92 to be swung transversely by the action of the spring I26 into the path of the pin I 29. If the carriage remains at rest, following the movement of the lever I40, for more than a predetermined interval, the pin I29 will engage the link 92, and the link will be moved into the path of the pin I30 and will be actuated The length of time that the motor will run,

after the last operation of the machine or the last movement of the carriage, depends upon the position of the pin I29 with relation to the lever I40 at the end of the last cycle. When operations are following one another in the usual quick succession, the lever I40 holds the link 92 out of the path of the pin I29 during the major part of each revolution of the gear 94. If, during the cycle of operations of the motor cut-out mechanism, the pin I29 moves the lever I40 into the position shown in Fig. 6 and,'while it is engaged with the lever andholds said lever from movement sufllcient to carry the lever 92 out of the path of said pin, any movement of the carriage is initiated and completed, the lever I40 will'be maintained in the position shown in Fig. 6 afterthe pin disengages the lever and the link 92 will not be moved out of the path of the pin I29 and the pin will move the link into the path of the pin I30 during the same revolution of the gear 94. In this case the contacts I2 and I3 will be disengaged at the end of about three-quarters of a revolution of the gear 94 after the pin leaves the lever I40. This is the minimum time interval that the contacts will remain'in engagement after a movement of the carriage. If a movement of the carriage occurs and the lever I40 is swlmg into the position shown in Figs. 1 and 4 just after the pin I29 passes out of the range of the lever, the gear 94 will then execute about one and one-half revolutions before the contacts I2 and I3 are disengaged. This is 'the maximum time interval that the contacts will to start the motor, the carriage is moved either by hand or automatically to release the lever I40 and allow the same to be swung by the action of .the spring I26 substantially into the position shown in Figs. 1 and 4. This movement of the lever I40 swings the link 92 outwardly away from the gear wheel 94 to disengage the link from the pins I29 and I30 and the link is then swung to the right and downwardly by the spring I20 into substantially the position shown in Fig. 4. The downward movement ofthe link releases the spring strip I4 and allows the same to engage the contact I2 with the contact I3 to close again the motor circuit.

It is to be understood that the terms "time interval, predetermined interval" and similar terms, employed in the specification and claims of this case, are relative terms related to the speed of the machine. mum and minimum time intervals which the mo- .tor will run with the carriage idle, will depend upon the speed of the motor, but each will always be substantiallythe same for the same speed of the motor.

Having explained the nature and objects of the invention and having specifically described a. construction embodying the invention in its preferred form, what is claimed is:

1. A record making machine, having in combination, a. carriage, an electric motor, a circuit for the motor, automatic means for opening the motor circuit when the motor has been running a predetermined time interval with the carriage idle and mechanism controlled from the carriage for preventing the opening of the circuit by said means when the carriage is moved at intervals less than said predetermined interval.

2. A record making machine, having in combination, a carriage movable in opposite directions transversely of the machine, an electric motor, a circuit for the motor, mechanism for opening the motor circuit when the motor has been runninga predetermined time interval without movement of the carriage and means controlled by the movement of the carriage in either direction for preventing the opening of the circuit by said mechanism when the carriage is moved at intervals less than said predetermined interval.

For example, the maxi-' 3. A record making machine, having in com-- I bination, a carriage, a motor, a switch for controlling the motor,'mechanism for opening the switch when the machine is idle for more than a predetermined interval comprising a rotary member connected with the carriage and arranged to be rotated whenever the carriage is moved and means controlled by the rotary movement of said member for preventing the opening of the switch when the carriage is moved at intervals less than .said predetermined interval.

4. A machine of the class described, having in combination, a. motor, a circuit for the motor,

mechanism for breaking the motor circuit when the machine is idle for a predetermined interval comprising a rotary member rotated during each operation of the machine, a tilting stop for engaging said rotary member, a support for said stop, means for moving the support to carry the stop away from the rotary member at regular intervals during the operation of the motor and means for .then locating the stop in a position to stop the return movement of said support by its engagement with the rotary member when said member is stationary and thereby condition said mechanism for the breaking of the motor circuit, the engagement of said stop with the rotary member tilting the stop into non-stop position when the said member is rotated.

5, A record making machine, having in 'combination, a carriage, a motor, a circuit for the motor, a switch for. controlling the motor circuit, a member connected for movement with the carriage, means for opening the switch when said member is stationary for at least a predetermined time interval and mechanism controlled by said member for preventing the operation of said switch opening mechanism when said memberis moved at intervals less than said predetermined time interval.

6. A record making machine, having in combination, a carriage, an electric motor, a circuit for the motor, mechanism for breaking the motor circuit when the machine is idle for a predetermined interval, means for resetting said mechanism. andmechanism for controlling the action of said means comprising a pivotally movable member acting as a stop when in one angular position to prevent said means from resetting said mechanism and swung into non-stop position by movement of the carriage to permit said means toreset said mechanism. e 7. A record making machine, having in combination, an electric motor, a circuit for the motor, a switch for controlling the circuit, mechanism for opening'the switch when the machine is idle for a predetermined time interval, means for resetting said mechanismand mechanism for controlling the action of said means comprising a pivotally movable member acting as a stop when in one angular position to prevent said means from resetting said mechanism and swung into non-stop position when certain parts of the machine are actuated to permit said means to reset said mechanism.

' 8. A record making machine, having in combination, a motor, a switch for controlling the motor, means for controlling the switch comand pivotally'movable in two diilerent planes, a timing device controlled by the motor for moving the link in one plane into the path of an actuating device, an actuating device for moving the link bodily, operated by the motor in timed relation to the timing device and means for moving the link in another plane out of the path of the timing device.

9. A record making machine, having in combination, a carriage, an electric motor, a circuit for the motor, automatically operating mechanism for opening the motor circuit when the motor has been running a predetermined time interval with the carriage idle and means set by the movement 01' the carriage to prevent the opening of the motor circuit by said mechanism when the carriageis moved at intervals less than said predetermined interval.

10. A machine of the class described having, in combination, an electric motor, a circuit for the motor, a device movable in one plane into and out of the' path of an actuator and in another plane to open the motor circuit, an actuator for moving said device to' open said circuit and means controlled by the motor and operating continuously during the operation of the motor for moving the actuator progressively in timed relation to the operation of the motor.

11. A machine of the class described having, in combination, an electric motor, a circuit for .the motor, a timing device operated by the motor, a circuit breaking device movable in one plane into and out of the path of the timing device and in another plane into and out of the path of an actuator, an actuator operated by the motor for moving said device to break the motor circuit and mechanism operating continuously during the operation of the motor for operating device operated by the motor and movable in one plane into and out of the path of prising a link bodily movable to open the switch thetiming device and in another plane to disengage the switch contacts.

13. A machine of the class described having, in combination, an electric driving motor, a switch having contacts in the motor circuit for controlling the motor, a timing device. controlled by the motor for timing the actuation of the switch to disconnect the motor circuit, a member movable in one plane to disengage the switch contacts. and in another plane into and out of the path of the timing device, a movable controlling device for controlling the position of said member in the second plane, means for moving said device into position to allow said member to move into the path of the timing device and means for preventing the return of said controlling device when the machine thereaiter is idle.

' OSCAR J. SUNDSTRAND.

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