US1883699A - Typewriting machine - Google Patents

Description

Oct. 18,1932. GOING 1,883,699

TY'PEWRITING MACHINE Filed June 5, 1929 3 Sheets-Sheet l WITNESSES INVENTOR M- MEQK" ATTORN EY Oct. 18, 1932. e. G. some TYPEWRITING MACHINE Filed June 5, 1929 3 Sheets-Sheet 2 WWW M d 3 WITNESSES ATTORNEY Oct. 18, 1932.. I G, GOlNG 1,883,699

' TYPEWRITING MACHINE Filed June 5, 1929 3 Sheets-Sheet 3 INVENTOR gu 4 2 BY @Mz; a: QM.

ATTORNEY Patented Oct. 18, 1932 Ts STATES PATENT Fries GEQRGE G. GOING, 0F STAMFORD, CONNECTICUT, .ASSIGNOB T0 REMINGTON T'YTPE- WRITEE COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK TYPEWRITING MACHINE Application filed June 5, 1929. Serial No. 368,539.

My invention relates to typewriting machines and more particularly to means associated with the escapement mechanism and controlling means therefor.

One of the main objects of my invention, generally stated, is to provide simple, light, compact, inexpensive and effective means for controlling the escapement mechanism, which means occupies but little space, is, nevertheless, reliable in use and is not apt to be injured or broken.

Another object of the invention, generally stated, is to provide simple and effective line lock mechanism operating in conjunction with said controlling means.

A further object of my invention is to provide simple and efiective means whereby a printing key may be actuated and control the escapement to advance the carriage even though the space vke be held depressed, and whereby the space liey may be actuated to advance the carriage even though a printing key be held depressed.

A still further object of my invention is to provide means for automatically breaking or rendering ineffective the connections between the space key and the escapement mechanism when the line lock mechanism is operated to lock the type actions against printing operation.

Another object of the invention is to provide means of the character specified which are noiseless, or substantially noiseless in operation. N

Another object of the invention is to provide simple, light, compact and comparativethe following description and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters designate corre sponding parts in the different views,

Fig. 1 is a vertical, central, fore and aft sec tional view of the machine with some of the parts shown in side elevation. V

Fig. 2 is an enlarged, detail, fragmentary, vertical, fore and aft sectional view taken through the rear portion oflthe machine.

Fig. 3 is a fragmentary, bottom plan view showing the escapement mechanism and some of the associated parts.

Fig. 4 is a detail, skeletonized, perspective view showing the line lock mechanism and some of the associated parts.

Figs. 5 and 6 are detail, fragmentary per- 1 spective views showing modified forms of cushioning means for the trip-oif device controlled by the space bar.

I have shown my invention, in the present instance, embodied in a noiseless portable machine of the character disclosed in my application Serial No. 331,534, filed Jan. 10, 1929 in which the devices of the present invention may be readily incorporated without modifying, or materially modifying other structural features of said machine. It should be understood, however, that the invention is not restricted in its use to any particular character of typewriting machine but may be employed in such machines generally, whereever found available. The nature of the invention, from certain aspects, is such, however, as to render it particularly available for use in portable typewriting machines.

In the accompanying drawings I have shown only so much of the said noiseless portable typewriting machine referred to above as is necessary to arrive at an understanding of my present invention in its embodiment therein.

Other features of the machine referred-to above are disclosed in the following applications filed-by me:

Serial N 0. 363,7 57 filed May 17th, 1929 Serial'No. 364,038 filed May 18th, 1929 Serial No. 365,426 filed May 23rd, 1929 (now; patent No. 1,767,877, dated June 24, 1930 Serial No. 365,885 filed May th, 1929 Serial No. 366,623 filed May 28th, 1929 (now patent No. 1,767,878, dated June 24, 1930 Se rial No. 367,733 filed June 1st, 1929 The frame of the machine is constructed as disclosed in my application Serial No. 365,885, and comprises side plates 1 united by castings 2, 3, and 4 by which various working parts of the machine are supported. I

The noiseless type actions shown in the present instance are the same as those disclosed in my aforesaid application Serial No. 331,534 and comprises type bars 5 pivoted at 6 and each controlled by toggle links or members 7, 8, 9 and 10, each toggle link 9 having a weighted member 11 connected thereto. Each typebar is provided at the heel thereof with teeth 12 meshing Wllill teeth 13 on a slide 14. Each slide 14 is pivoted at its forward end to one arm of a sub-lever 15 pivotally supported on a hanger 16. The hangers 16 are supported on a plate 17 which in turn is secured to the casting 3. Each sublever has an arm thereof ivoted to a depending link 16 that loops un er an associated key lever 17 provided with a finger key 18. Each type action is restored to normal position by i an associated contractile spring 19.

A contact portion 20 on the heel of each type bar coacts with a segmental universal bar 21 as a type bar approaches the printing position and actuates said universal bar to operate the carriage escapement mechanism, as will hereinafter more clearly appear. The universal bar is of yoke-like formation with parallel side arms ivoted at 22 to bracket arms 23 supported y the casting 3. A depending arm 24 on the universal bar is pivoted to one end of a link 25, the rear end of said linkbeing pivoted to one arm of an angular lever 26 pivoted at 27 to an arm of a bracket 28 fixed to the carriage support, designated as a whole by the reference numeral 29. The rear arm of the lever 26 carries an adjustable contact screw 30 which coactsv with a dog rocker 31 pivoted at 32 on arms of the bracket 28. The dog rocker 31 carries feed dogs 33 and 34 which coact with an esca ement wheel 35 supported to turn in a bearing in the bracket 28 and arranged beneath the carriage support 29. The escapement wheel is fixedly connected to a feed pmion 36 that meshes with a feed rack 37 carried by the carriage. Said feed rack is pivoted at 38 to depending bracket arms 39 that are secured to the end plates 40 of the carriage.

An arm 41 is secured to the feed rack 37 and terminates in a finger piece 42 by which the feed rack may be swung on its pivots 38 into and out of mesh with the feed pinion 36.

The carriage comprises the end plates 40,

mentioned above, which are secured to a cross bar 43 provided with oppositely disposed raceways 44 in which crossed anti-friction rollers 45 are received. These rollers also are received in oppositely disposed racewa s 46 in the carriage support 29. A c lin rical platen 47 is supported in bearings 1n the end plates 40 of the carriage. A. spring drum 48 is supported on the carriage support 29 and has one end of a cord (not shown) connected thereto, the other end of said cord being affixed to the carriage.

The carriage support 29 may be mounted for up and down case shifting movement on the rear casting 4 as disclosed in my above mentioned applications Serial Nos. 365,426

ments; that the connections between t e universal bar 21 and the feed dogs is not effectively altered whether the platen be in the upper or lower case position, and that the correlation between the escapement wheel,

the feed dogs, the spring drum, the feed rack,

feed pinion and the carriage etc. is not in any way altered whether the platen be in the upper or lower case position.

In order to further guide and support the carriage I have extended the rear casting 4 up in the rear of the platen as indicated at 4, it being understood that this casting constitutes the rear of the frame of the machine. The upward extension 4 of this casting has an inclined guide plate 49 secured thereto. A cross bar 50 i connected at its ends to and unites the end plates 40 of the carriage. The rear edge of this cross bar bears against the front face of the guide plate 49 and resists, in the rear of the printing point, the ressure of the type bars against the platen. uitable connections as fully disclosed in my applica tion Serial No. 365,426 (now Patent No. 1,767,877), are provided to maintain the rear edge of the cross bar 50 against the guide plate 49 without, however, interfering with the up and down and longitudinal sliding movement of the bar 50 on the face of the guide plate. It is unnecessary to describe in detail such means herein, the general purpose of the connection being understood.

The control of the escapement mechanism from all of the printing keys is effected by the heel of the actuated type bar operating the universal bar 21 and transmitting motion therefrom through the link 25 to the angular lever 26. This results in moving the dog rocker 31 and a letter feed advanceof the carriage is effected at the down sfroke of the 1,ssa,eee

plained in my application Serial No. 331,534

this arrest in the depression of the key lever takes place before the associated type bar reaches the laten, the pressure imprint being effected by a continued movement of the weighted part 11., the ty e bar and other parts of the type action independently of the companionkey lever. It results from this construction that if the operator should maintain a printing ke depressed this will not result in holding t e dog rocker in its actuated position. If, therefore, at this time the universal bar should be actuated from the space key by an independent train of connections, then the carriage would be advanced by the space key even though a printing key is held depressed. I have provided such an independent train of connections from the space key to the universal bar, the character of which also permits an actuation of the printing keys to advance the carriage even though the space key be maintained depressed. Such construction will now be described.

The space key 52 is supported by rearwardly extending arms 53 connected at their rear ends to a rock shaft 54 which is square in cross section. A rearwardly pro'ectlng arm 55 is secured to this shaft and as pivoted thereto at 56 a trip-off device desi ated as a whole by the reference numeral 5 In the present instance this so-called trip-off device consists of an angular lever having a forwardly extending arm 58 and an upstanding arm 59. A contractile spring 60 is connected at one end to the arm 55, as indicated at 61,

' whereas the other end of said spring is connected to an ear 62 on the bottom of the trip- I .06 device. The force of the spring 60 tends to turn the device 57 on its pivot 56 in a clockwisedirection, as the parts are viewed in Fig. 4. A suitable buffer or. cushioning device is employed that stands in the path of the upright arm 59 of the trip-off device to noiselessly arrest said'device when it is returned to normal position under the action of its spring 60. I have shown several forms of cushioning devices that may be employed for this purpose. That shown in Fig. 4 is in the nature of a closely wound coiled spring 63 that surrounds a sheet metal supporting arm 64. The spring is confined on said arm between a pin 65 carried at the outer end thereof and a washer 66 supported on the arm and bears against a shoulder thereon. The rear edge of the upright arm 59 normally rests against the spring 63 so that the upper flat end of said arm underlies an ofi-set lug or ear 67 on a rearwardly extended a 68 on the universal bar 54.

An adjustable stop 69 is inter osed in the the arm 59 forward, thereby releasing it from the lug 67 and freeing the universal bar for independent return movement under the action of a returning spring, not shown. This break in the train of the operative connections between the space key 52 and the universal bar 21 takes place immediately after the dog rocker has been rocked a distance suficient to bring about a letter space advance of the carriage. Therefore, the universal bar 21 will eturn to normal position ready to be actuated by the operation of a printing key even should the operator maintain the space key depressed. When the depressed space key is released the trip-ofi device 57 will be lowered, the arm 59 thereof first sliding down the front face of the lug 67 when released from the restraint of the stop 69 and when the top end of the arm 59 clears the lug said arm will turn' Any suitable sto may be employed in place of the stop 69. owever, the construction shown is simple and effective for the purpose set forth, and comprises a disk-like stop member 69 secured to a depending bracket arm 70 by a headed clamping screw 71, the threaded stem of which passes through an eccentrically disposed hole pierced in the stop 69. The threaded end of the screw en ages a tapped opening in the bracket arm. tightening of the screw 71 clamps the eccentric in its ad'usted position. The rotative adjustment 0 the sto presents a peripherial stop surface hig er or lower and arrests the arm 58 sooner or'later in its movement thus determining the point in the depression of the space key when the break in the train of connections shall take place.

In the construction shown in Fig. 5 the arm 59 of the trip-off device normally rests against a pad 72 of felt or like material secured to the end of anarm 73.

In the construction illustrated in Fig. 6'

the upier end of the upright arm 59 of the trip-o device" 57 carries a ad 74 of felt or like material that normally are against the lug 67 on the universal bar. A shoulder 7 5 on the arm 59 nermall underlies the lug 67 on the universal bar. in the rear of the arm 59 and is normally out of contact therewith and is employed for purposes which will hereinafter appear.

In accordance with my resent invention I employ a line lock mec anism which is simple in construction and operates to lock the universal bar against actuation by the n arm 76 is arranged of the latter.

type bars and revent a printing operation uch line lock mechanism is also combined with the trip-off mechanism described above to break the train of connections between the space key and the universal bar in order that the parts will not be strained, injured or possibly broken, by attempting to actuate the space he when the universal bar is locked. By brea ring the train of actuating connections between a key (the space key in the present instance) and the line locked part (the universal bar in the present instance) no force can be exerted on the locked part and no injury thereto can result. From certain aspects of my invention T contemplate broadly the provision of such means.

The line lock mechanism includes an upright lever 7 8 pivoted at 79 on a rock shaft 80 supported in bearings in the casting t. The upper end of the lever 78 is bent forward at 81 and normally extends into the path of travel of a stop or line lock abutment 82 carried by and adjustable to difi'erent positions along a stop bar 83 carried by the carriage.

' ()ne end of the rock shaft 80 has a crank arm 84 secured thereto. A. forwardly extending link 85 is pivoted at its rear end to said crank arm 84 and at its forward end is pivoted to one arm of a bell crank lever 86. A stem that carries a release key 87 is pivoted to the other arm of the bell crank for actuating it and through the intermediate train of connections efi'ect a rocking of the shaft 80. This results in moving the end 81 of the lever 78 out of the path of the stop 82 and releasing the line lock as will presently appear.

The lower end of the lever 78 is bifurcated at 88 to straddle the rear end of a horizontally disposed line lock lever 89 pivoted, at 90., to a forwardly projecting arm 91 on the casting l:. The forward end of the lever 89 is adapted to move to a position beneath, and into and out of the path of, a lug or ear 92 on the universal bar 21. .When the lever is under said lug the universalbar is locked against movement, or against movement a. suficient distance to permit a type bar to reach printing position and to ena le the universal bar to actuate the escapement mechanism to advance the carriage a. letter space distance. Should the operator, at this time, desire to add one or more letters to complete a word or to insert a hyphen a depression of the release key 87 will, as previously pointed out, clear the upper end of the lever 78 from the line lock stop 82, enabling a spring 93 to return the levers 7 8 and 89 to normal position. When the operator releases pres sure from the depressed release key 87 a spring 94: will restore'the rock shaft 80 to normal position, bringing the upper "end of the lever 78 into path or the stop 82 ready for the next line locking operation.

Extending to the right from the line locking lever 89 is an arm 95 which terminates in the supporting arm 64 on which the cushion sto 63 is mounted. It will be understood t at when the forward end of the line lock lever 89 is moved to a position beneath the lug 92 on the universal bar, the arm 95, (it will be moved forward. rocking the trip-off device 57 around its pivot 56 and carrying the upper end of the arm 59 forward from beneath the lug 67 on the universal bar. The result is that the This will result in train of connections between the space key 52 and the universal bar is broken or rendered ineffective, so that any pressure exerted on the space key at this time will not be exerted on the locked universal bar and none of the parts intermediate the space key and the locked part (the universal bar in the present instance) is subjected to any strain, such as would result from an attempt to operate the space key when an unbroken train of connections therefrom to ploved.

It will he understood, of course, that when the line lock is released either byan actuation of the release key 87 or by returning the the locked part is emcarriage to the r ght, the arm 95, 64, will be returned to normal position and permit the trip-oii' lever 57 to resume its normal position with the upper end of the arm 59 thereof beneath the lug 67, ready to actuate the universal bar on the depression of the space key.

The operation of the construction disclosed in Fig. 5 is the 581118 as that described above.

In the construction disclosed in Fig. 5 the arm 76 moves forward when the line lock lever 89 which carries it is moved to the locked position, thereby moving the trip-off device 57* to a position where the shoulder 75 thereon will be displaced from beneath the lug 67, holding the trip-0d device thus disengaged until the line lock lever is shifted back to normal position.

The distance of the arm 76 from the upright arm 59, as the parts are normally disposed, is somewhat exaggerated in Fig. 6 in order that it may be made to clearly appear that the arm 76 is outof contact with the arm 59 in the normal condition of the parts and are only brought into contact when the line lock lever 89 is shifted to lock the'type bars and break the train of connections between the space key and the universal bar.

From'the foregoing description it will be tion of a carriage, escapement mechanism therefor, a universal bar for actuating said escapement mechanism, type'actions operative on said universal bar,- a space key, and

independent train of operative connections 4 between said space key and said universal bar, and means operating automatically when I the carriage reaches the end of a line for efiecting a relative displacement between parts of said connections and thus rendering mechanism, and automatically operating means controlled by the line lock mechanism for rendering the space key inefiective on the escapement mechanism.

3. In a typewriting machine, the combination of a carriage, escapement mechanism therefor, type actions, a universal bar controlling said escapement mechanism and controlled by said type actions, line lock mechanism for automatically locking said universal bar against operation when the carriage reaches the end of a line. a space key, operative connections between said space key and universal bar, and means controlled by said line lock mechanism for automatically breaking the connections between the space key and universal bar when the line lock rbnechanism functions to lock the universal tion of a carriage, escapement mechanism therefor, type act1ons,-a space key, a member through which the escapement mechanism is controlled from the type actions and also from the space key, and means for automatically locking said member when the carriage reaches the end of a line and for simultaneously rendering the space key in capable of acting on said member,

5. In a typewriting machine, the combination of a carriage, escapement mechanism therefor, type actions including key actuated type bars, a universal bar for the escapement tion of a carriage, escapement mechanism therefor, type actions including key actuated t. In a typewriting machine, the combina type bars, a universal bar "for the escapement mechanism actuated by said type bars, a space key, operative connections from said space kEy to said universal bar including a tripevice that automatically breaks said connections during the depression of the s ace key, and means for automatically loc ing said universal bar when the carriage reaches the end of a line and for simultaneously moving said trip-ofi' device to and for holding it in ineffective position as long as the universal bar remains locked.

7. In a typewriting machine, the combination of a carriage; escapement mechanism therefor; the space key; connections between said space key and esca ement mechanism for controlling the operation of the latter, said connections including a trip-ofi' device that automatically breaks said connections during each depression of said key and after an actuation of said escapement mechanism; and

automatically operating means for moving said trip-off device to and for holding it in ineffective position when the carriage reaches the end of a line and thus breaking the connections between said space key and the escapement mechanism.

8. Ina typewriting machine, the combination of a carriage; escapement mechanism therefor; a key; connections between said key and escapement mechanism for controlling the operation of the latter, said connections including a key actuated lever, an angular trip-off lever carried thereby and pivoted thereon, a spring acting on said tripofi lever, an actuated member with which one arm of the angular trip-off lever is adapted to coact, and a fixed stop interposed in the path of the other arm of said angular trip-ofl lever; and means for automatically moving said angular trip-oi? lever out of cooperative relation with said actuated member when the carriage reaches the end of a line. 9. In a typewriting machine, the combination of a carriage; escapement mechanism therefor; means forjactuatingsaidescapement mechanism including a space key actuated lever, a trip-ofi' lever carried by said space key actuated lever, an actuated part operated by said trip-oft lever and from which the trip-off lever is released before the space key actuated lever completes its movement and after the said actuated part has been operated thereby to actuate the escapement mechanism, a spring for said trip-off lever, cushioning means that noiselessly limits the motion of the trip-ofi' lever under the action of said spring, and a sto fixed in the path of the trip-oil" lever and w llCh releases it from said actuated part; and means for automatically moving said cushioning means when the carriage reaches the end of a line to shift said trip-off lever to and hold it in a position where it is ineffective on said actuated part.

10. In a typewriting machine, the combination of a carriage; escapement mechanism therefor; and means for actuating said escapement mechanism mcludmg a universal bar, a key actuated lever, a trip-oil lever carried by said key actuated lever and coopera tive with said universal bar and from which the trip-oil lever is released before the key actuated lever completes its movement, a spring for returning the trip-oft lever, a cushion stop for noiselcssly arresting the return of said trip-oil lever, and a stop in the path of said trip-cit lever to move it against the force of said spring and trip it otl the 7 universal bar. 12. In a typewriting machine, the combi- 3 nation of a carriage; escapement mechanism therefor; means for actuating said escapement mechanism including a universal bar. a key actuated lever, a trip-oil lever carried "by said key actuated lever and cooperative with said universal bar and from which the trip-oil lever is released before the key actuatedlever completes its movement, a spring tor returning the trip-oft lever, a cushion stop for noiselessly arresting the return of 40 said trip-0d lever, and a stop in the path of said trip-ofi lever to move it against the force of said spring and trip it on the universal bar; and automatically operating means for locking said universal bar and for simultaneously shifting said cushion stop and thereby move the trip-oil lever out of cooperative relation with the universal bar when the carria e reaches the end of a line.

13. n a typewriting machine, the combination of a carriage, escapement mechanism therefor, a substantially horizontally disposed unlversal bar for actuating said esacapement mechanism, a series of type bars that coact directly with and actuate said universal bar, line lock mechanism including a member that coacts directly with said universal bar and locks it against operating ;,movement when the carriage reaches the end of a llne, a space key, connections between said space key and universal bar including a trip-off device, and means controlled by said line lock lever for shifting said trip-elf device .i to ineliective position when the line lock lever is shifted to lock the universal bar. 14. In a typewriting machine, the combination of a carriage, escapement mechanism; therefor, a substantially horizontally (115- v posed universal bar for actuating said escapement mechanism, a series of type bars that coact directly with and actuate said universal bar, line lock mechanism including a member that coacts directly with said universal bar, and locks it against operating movement when the carriage reaches the end of a line, a space key, connections between said space key and universal bar including a tr pofi device, a spring for returning said tripoil device, and a cushion stop for noiselessly arresting the return movement of said tripofi' device.

15. In a typewriting machine, the combination of a carriage, escapement mechanism therefor, a substantially horizontally disposed universal bar for actuating said escapement mechanism, a series of type bars that coact directly with and actuate said universal her, line lock mechanism including a memher that coacts directly with said universal bar and looks it against operating movement when the carriage reaches the end of a line, a space key, connections between said space .key and universal bar including a trip-ofi device, a spring for returning said trip-oil device, a cushion stop for noiselessly arresting the return movement of said trip-ofi device, and means controlled by said line lock lever for shifting said cushion stop and thereby moving said trip-ofi? device to and holding it in ineflective position as long as the line locklever is held in its edective position.

16. The combination of a carriage, escapement mechanism therefor, printing keys, means controlled thereby for actuating said escapement mechanism, line lock mechanism for locking the printing keys against printing actuation when the end of a line is reached, a space key, an independent train of actuating connections between said space key and the escapement mechanism, and means for breaking said train of actuating connections when the line lock mechanism is actuated, whereby the space key is rendered ineffective on the escapement when the printing keys are locked against printing actuation at the end of a line.

17, The combination of a carriage, escapement mechanism therefor, a, space key, operating connections from said space key to the escapement mechanism including a trip that is automatically released at each operation before the spacing key reaches the limit of its depression and-after the escapement has been actuated, a cushion stop with which the trip coacts to noiselessly limit its movement in one direction during the operation of the space key. and automatically operating means for shifting said cushion stop and thereby render said trip inefi'ective to actuate the escapement mechanism.

18. In a typewriting machine, the combination of printing keys, type bars controlled thereby, a carriage, escapement mechanism therefor, a space key, connections between said-space key and escapement mechanism for controlling the operation of-the latter,

said connections including a trip-ofi device that automatically breaks said connections during each depression of said space key and after an actuation of said escapement mechanism, whereby any printing key may be actuated to operate its type bar and effect a letter 5 ace feed of the carriage even in the event t at the space key is held depressed, and automatically operating means for moving said trip-oil device to and holding it in a position where it is ineffective to actuate the escapement mechanism when the carriage reaches the end of a line.

19'. In a typewriting machine, the combination of printing keys, type bars controlled thereby, a carriage, escapement mechanism therefor, a space key, a trip-oil lever actuated by said space key, an actuated part for controlling the escapement mechanism operated by said trip ofi lever and from which the tripoif lever is released before the space key completes its movement and after said actuated part has then. operated by the trip-01f lever to actuate the escapement mechanism, a spring for said trip-oflt' lever, cushioning means that noiselessly limits the motion of the trip-off lever under the action of said spring, whereby any of said printing keys may be actuated to operate its type bar and effect a letter space feed of the carriage even in the event that the space key is held depressed, and means for automatically moving said cushioning means when the carriage reaches the end of a line in order to shiftsaid trip-ofl lever to and hold it in a position where it is ineffective on said actuated part.

Signed at Stamford, in the county of Fairfield and State of Connecticut, this 4th day of June, A. D. 1929.

- GEORGE G. GOING.

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