US1395599A - Electrical actuating means for typewriter type-bars and other devices - Google Patents

Description

. WWTESTPM. ELECTRICAL ACTUTING MANS FR TYPEWRTEP. TYPE BARS AJD OTHER DEVICES. APPLCATOJ. FLE JAN 31| 15'20 TL f 1 n TIF- www f1 Y z P@ 0 l F. SAITERSIHOM. ELECTRICAL ACTU/ITIN@ MEANS TOR TYPEWITITER TYPE BARS AND oTHEI'I DEVICES. APPLICATION FILED IAN, 31, 1920.

F. SA'PTERSTHOM. ELECTRICAL ACTUATTNG MEANS EUR TYPEWRTTET: TYPE BARS AMD OTHER DEVTGES.

APPLICATIONI YILED .IAN 31, 1920.

bracket 9 arranged on 'the frame of the ma chine. The lever 8 and the rear end of the type bar 3 are connected by link 10. Pref-- erably the type bars are arranged to stand normally in a nearly vertical position, With.

the rear ends of the type heads resting against a semi-circular bearin 11, as shown in Fig. 5 of the drawings. ivotally con nected to each of the actuating levers 8 is a connecting member 12. These members are preferablyr in the form of bars arranged in substantially vertical positions and passing through slots 13 in a slotted guide plate le. Normally these members stand at the rear end of the slots and are preferably arranged to rest against a bar 15 extending across the plate 1+i. The lower end of each connecting member 12 is provided with an off-set 16 to which is connected a suitable spring l?, the opposite end of the spring being suitably connected to a stationary part of the frame. These springs tend to hold the connecting members 12 at all times with their rear edges against the bar 15, as shown by full lines in Fig. 5 of the drawings. The actuating levers 8 preferably extend through slots in a guide bar 1S, as shown in Figs. and 6 of the drawings.

Each' connecting member 12 is provided at its upper end, with. a shoulder forming this portion of the men'ibei` into a laterally extending hook 19, as shown in Figs. 5 and 6.

A series of selecting magnets 2O are mounted upon suitable supports upon the frame of the machine. Each of these magnets is provided with a pivoted armature 21 extending longitudinally of the magnet, and passing laterally by both poles 22 thereof, whereby. when the magnet is not energized, by the passage of an electric current therethrough, the armature will stand in the position shown by full lines in Fig. 5 of the drawing. The armatures 21 are connected by suitable links 23 with the connecting members 12, whereby when any armature is energized the upper end of the corresponding connecting member 12 will be moved from the position shown by full lines in Fig. 5 to the position shown by dotted lines in Fig.' 5 and by full lines in Fig. 6.

Arranged in close proximity to the connectinpr members 12 is a universal actuating 'or power bar 24, preferably supported by arms 25 upon a rock shaft 26. As here -shownvthe shaft 26 is mountedin bearings 31 on the machine frame 2 and has near each end la crank arm 27, to which is connected arodfl. extending to and connected with the iippcr end of a pivoted armature 29, arranged to coact with an operating niagnet 30.

lY have here shown two of the operating ,the machine. p

may, if preferred, be employed to move the sse-snee magnets 3Q, one arranged near each side of i single operating magnet universal power bar.' l v vWith this construction and arrangement of parts, when any one of the selected magnets 2O is energized, the corresponding mem-- ber 12 will be thrown forward into the posi'- tion shown by dotted lines in F ig. 5 and by full lines in ll'ig. 6. Tae operating magnets 30 are designed to be simultaneously energized, as hereinafter described, and when these magnets are energized the-rok shaft 26 will be turned through the arri ziture 29, connecting rods 28. and crank arms 27, thereby moving upward the universal power bar 24. The movement of this bar, through the connecting member 12, actuating lever 8 and link 10. actuates the corresponding type bar 3. bringing the same into the position shown in Fig. 6 of the drawings and making'v an impression, from the operated type,upon the paper in printing position on the machine.

l-r or the purpose of restoring the universal power bar 24, and type connected therewith, to normal position, after the printing operation. springs 32 are connected to the arms These springs are put under tension when the power bar is moved by the operatingmagnets. When these magnets are deenergized the springs return the universal actuatingdmr 2l, and the parts connected therewith, to normal position, and the springs 17 restore to normal position the 100 connecting members 12, the levers 8 and i type, bars 3..

lt will be understood that each printing operation' requires the energizing of the selecting magnet controlling the type bar that 105 is to be operated, and also requires the energizing of the operatingr magnet.

lt will also be understood that the selecting magnet must first act. to move its connecting member 12 carryinrr the hook 19 into 110 operative position, before the universal power bar is actuated by the operating magnets.

l find that the selecting and operative magnets may both be arranged in theA same 115 circuit and be energized at the same time, the selecting magnet` in that case, acting more I quickly than the larger operating magnet, thereby bringing the corresponding connect-V ing bar 12 into position to be moved by the 120 universal power bar before said power bar is moved by the operating magnet.

lt is, therefore, perfectly practicable to arrange each selecting magnet in circuit with the operating magnets.

l may, however` as an alternative construction, provide independent circuits for the selectingr and operating magnets, in which case. however` the movement of any key. will first close thc'cirruit through the 130 ably secured to the Lef-isses corresponding selecting magnet, and further movement of said key will thereafter close the circuit through the ope ating magnets.

As the type keys and selecting magnets are all alike and operate in the saine way it will be necessary todescribe the construction and arrangement of only one of said keys and tbe arrangement of the circuit or circuits through the selecting and operating magnets controlled by said key.

APivotally supported upon the trame of the machine is a key lever 40 having a key top 4l.. These keys are arranged in any preferred manner, a convenient grouping there of being illustrated in Figs. 2 and -i of the drawings. Arranged and extending transversely thereof, is a rock shaft- 42 mounted in suitable bearings 43, 43, upon the trame of the machine. Secured to this rock shaft preferably near its end, are the crank arms 44, supporting a universal Contact bar 115, which connects the ends of said crank arms and is preferably formed integrally therewith. The crank arms preferably extend beyond the rock shaft 42, and springs 46 are connected to said crank arms and to stationary points ou the machine `frame. Suitable stops 44 are provided to limit the upward movement oi the bar 45. rlhcse springs tend, at all times, to hold the universal contact bar at the upper limit of its movement, while permitting said bar to be moved downward when pressure is applied to the upper part of said bar at any point in its length.

Arranged beneath each of the key levers is a contact arm 50, preferably pivoted to a suitable insulated stationary support 5l on:

the Atrame ot the machine and arranged to be held in an elevated position by a suitable spring 52. 'An insulating block 53 is preterunder side of the key lever 4.0, andthe contact arm 50 is normally held with its upper or 'forward end rest-ing against the under side ot said insulating block.

Beneath the Contact bar i5 is arranged a contact spring' or member 54, preferably secured upon a suitable support, the spring being preferably of substantially the form shown with its free end extending beneath the universal contact bar tact therewith.

A. suitable plate ot insulating material 55 is preferably arranged upon the frame of the machine. (ln this plate the supports lt'or the contact arms 50. the bearings 43 for the rock shait 42, tact bar 45, and the contact ber 54, are all supported.

l have shown the contact spring or member 54 made double1 that is to saythe sheet of spring metal ot which the plate is 'Formed is divided longitudinally so that its end forms two parallel contacts extending beneath the `spring or niembeneath the key levers,

45, but not .in consupporting` the universal conthese screws the normal distance between the ends or" the contact spring 54 and the under side or the universal contact bar 45y may be regulated.

n By dividing rorm the two these ends may the `contact spring so as to contact members as shown, bc adjusted so that one stands a little closer to the contact bar than the other. lilith this arrangement the Contact vill first be made between the Yunder surface of the Contact bar and the portion of the contact spring that stands nearest thereto.

Should, however, the surface of this contact member become corroded by the sparking which will take place whenever the contact bar is moved away 'from the contact spring, after a circuit has been closed,so that tbe circuit through said contact` is not properly closed, the further depression of the universal contact bar will bring its under surface into contact with the other end of the contact springs, thus insuring proper closing et the circuit.

l have also shown a second contact spring` 60, preferably in all. respects like the contact springs 54. and arranged in similar relation to the universal contact bar 45. Adjusting screws 6l are preferably arranged in conne"- tion with the contact spring 60 in the Same way and for the same purpose than the screws 57 are arranged in connection with they contact spring The preferred arrangement or" elects-cal connections and circuits is as follows: l? rep.- resents a suitable battery; A is a circuit'wire extending 'from the contact spring 54 to the battery D, which has a ground connection at E. C is an electrical connection between a selective magnet 2O and a corresponding contact arm 50. Each magnet has a ground connection at F. B is an electrical connection between the contact spring 60 and the operating magnet 30. The operating magnet has a suitable ground connection 4at G.

l' have shown the contact spring GG justed so that it stands a little farther from the universal Contact barA than does the contact spring `With kthis arrangement when any key 40 is depressed the corresponding contaet erin will come in contact with the universal contact bar at some point in its length, said bar until its lower surface 'comes in contact with the Contact spring 3:24. An elecand will depress' tric circuit will then be closed from the hata tery I) through the wire A through the contact spring 5a, the contact bar 15, contact arm 50, and wire C to magnet 20. The battery D and the magnet 20 being respectively grounded at E and F, the circuit through the magnet will be completed, the magnet will be energized and the connecting bar 12 will be moved into the position shown by dotted lines in Fig. 5 and full lines in Fig. 6. A further depression of the universal contact bar 45 will cause the circuit through the operating magnet 30 to be close-d, as follows: from battery l) through connection A through contact spring 54; through universal contact bar i5 to contact spring 60; through contact spring 60 and connection B to magnet 30. This magnet being grounded at G and the battery being grounded at E the circuit will be complete through the magnet 30, which willthen be energized and will operate the universal actuating bar 24, causing the type bar whosevconnecting rod 12 has been moved by the corresponding selective magnet 20 into actuating position, to be ope "ated and thereby to impress its type upon the paper'.

As I have already stated it makes no dit'- ference whether the selecting magnet is energized before or simultaneously with the energizing of the operating magnet, and in either case the selective magnet will perform its work first.

If the contact springs 54 and 6G are at the same distance from the under side of the universal contact bar 45 both magnets will be energized at the same time. If, however, the Contact spring 54 is a little nearer the contactv bar than the spring 60,"the selecting magnet will be energized first, and the operating magnet will be Aenergized as soon thereafter as the contact bar 45 comes in contact with the contact spring G0.

Fig. 8 shows electrical connections A and B with the contact spring 54, thereby causing the simultaneous energizing of thermagnets 20 and 30, through the battery D, connection A, bar 4:5, lever 50, block 5l, connection .C to magnet 20, ground F and E, and through battery D, connection A, spring 54:, connection B, magnet 30, ground G and E completing the circuit. Suitable escepement connection (not shown) may be attached to the shaft 26 to'move the carriage after each operation of the key, and to accomplish the saine result when spacing bar is used, provide at each end of the keyboard a lever 40 connected with the spacing bar 41. When- ,ever said bar is depressed the levers 40 will through levers 50,'bar 4:5 and springs 54 and 60' make a circuit through ths-ifnagnet 30 and rock the shaft 26 to work the escapement connection for spacing. vihe selecting magnets are not used with the spacing bar.

accenna y Suitable springs 46 are provided to hold the spacing bar in its raised position.

l have not thought it necessary to illus trate and describe other features of typewriting machines such as the carriage operating mechanism, the paper support, the

inking ribbon andits supporting and feed-- ing means as my invention does not extend to these features of a typewriter, and my present invention may be used in connection with other typewriting mechanisms of any suitable or preferred construction.

The mechanism herein described for operating the type-bar actuating levers is capable of use for a variety of purposes, such as operating the actuating levers of adding or calculating machines, and such structures are considered to be within the scope of the specification and claims herein.

It is obvious that the details of construction and arrangement of parts may be varied in many particulars without departing from my invention.

l claim as my invention;

l. The combinatiom'with a series of actuating levers, of a series of selecting magnets, and an operating magnet, each selecting magnet, when energized, serving to bring the corresponding actuating lever into position to be moved by the operating magnet, a series of keys corresfmnding to the actuating lever, each provided with a contact device, and a universal contact bar, movably supported and arranged to be operated by any key, each key serving, when operated, to first bring its contact device into connection with said contact bar, and thereafter to move said bar to close an electrical circuit through said bar, the operating magnet and the selecting magnet corresponding to the operated key.

2. Actuatlng means for type bars of typewritingb machines comprising, in combination, a series of actuating levers, a selecting magnet for each actuating lever', operating magnets common to all of said levers, a contact member having .electrical connection with said magnets, a universal contact bar arranged to be brought into engagement with said contact member, a key lever for each actuating lever, a contact device in operative relation to each key lever, and each arranged to make an electrical connection with said universal Contact bar and to move said bar into engagement with said contact members, and complete an electric circuit through the corresponding selecting magnet each ot' said type bars. an operating magnet for moving said universal power bar. keys corresponding to said type bars. contact members having electric connection with said selecting magnets and also with said operating magnet. a universal contact bar. and a circuit closing contact device tor each ke'v lever, whereby upon operation ot any ke vr lever its contact device is irst brought into electrical connection with said universal contact bar and said bar is thereafter brought into enc-agement with said contact .members` and the corresponding selecting magnet. and the operatingr mag-net are energized, 'lor the purpose set forth.

ln a typewriting machine. the combination, with a series ot' type bars. oit' a. selecting magnet Jfor each type bar. operatincmagnets common to all said type hars. contact members having electric connections with all magnets, a universal contact bar arranged to be brought Yinto contact with said contact members, a key lever for each type bar, and contact means tor each lever arranged to move said universal contact bar intoengagement with said contact members. whereby upon the operation of any key its contact. means is first brought into electrical connection with said contact bar and a circuit, through said universal contact bar is thereafter completed through the corresponding select-ing magnet and the operating magnet.

5. ln a typewriting machine the com-f bination, with a series ot' type bars, of a slectincr magnet for each type bar, operatingT magnets common to all said type bars, con tact members having electric connection with said magnets, a universal contact bar arranged to be brought into engagement with said contact members, a key and key lever corresponding to each type bar, a contact device in operative relation to each key lever. each contact device being arranged to make an electric connection with said universal contact bar, and to move said bar into engagement with said contact members, whereby, upon the operation of any key, said universal contact bar is moved into engagement with said contact members and completes an electric circuit through its corresponding selecting magnet and through the operating magnets.

The combination with a series of magnets. ot a corresponding series ot' operating keys, each provided with a contact device, a universal contact bar movably supported and arranged to be operated by any key, each key serving, when operated, to rst bring its contact device into electrical connection with said contactbar, and thereafter to move said bar to close an electrical circuit through said bar, and the magnet corresponding to the operated key.

7.x The combination with a series of mag nets, ot' a corresponding series of operating keys. each provided with a contact device, a universal contact bar, and means for causing each key, when operated. to first bringr its contact device into electrical connection with said contact bar, and thereafter to close an electrical circuit through said universal contact bar, said lever contact device, and the magnet corresponding to the operated key.

In witness whereof, I have hereunto set; my hand this 9th day of January, 1920.

FERDINAND SATTERSTROM.

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