US1057013A - Type-writing machine. - Google Patents

Description

C. B. SMITH. TYPE WRITING MACHINE, A'PPLIUATION FILED JULY 2. 1912.

Patented Mar.25,191 3;.

5 SHEETS-SHEETI INVQENTEIR WITNESSES MM 05 HIEATTDR'NEY C. E. SMITH. TYPE WRITING MACHINE. APPLICATION FILED JULY 2, 1912.

Patented Mar. 25, 1913.

5 SHEETS-SHBET 2.

INVENTUR= /Q, W 8M WlTNEEEELi H15 ATTORNEY G. E. SMITH. TYPE WRITING MACHINE.

APPLICATION FILED JULY 2,1912.

Patented Mar. 25, 1913 5 SHEETS-SHEET 3.

INVENTUR ,/4 LWM 4. Aw

WITNEEEEE:

j 5W Fi /W6 Jam HIEATTURNEY C. E. SMITH. TYPE WRITING MAGH NE.

3 1 9 1 5 2 R m d w n .w a D a 1 9 1 2' Y L U I D E L I F N 0 I T A 0 I L P P A 5 SHEETS-SHEET 4.

'5' S? L. WITNEEEES:

W f HIEATTURNEY C. E. SMITH. TYPE WRITING MACHINE. APPLICATION FILED JULY 2,1012.

Patented Mar. 25, 1913.

5 SHEETSSHEBT 5.

WWNE'EfEE'i.

HISATTURNEJ pear from the. following description.

a Ordinarily after completing a sentence it 'Most operators provide three spacesbethen' re leiisihg' t e' shiftkey," may be re- UNITED STATES PATENT OFFICE.

CHARLES E. SMITH, or NEW YORK, N. Y., ASSIGNOVR TOIUNIYON TYPEWRITER comrm,

or JEBSEY CITY, NEW ERSEY, A CORPORATION or NEW JERSEY.

TYPE-WRITING MACHINE.

citizen of the United States, and resident of I the borough of Brooklyn, city ofNew York, i in the county of Kings and State bi -New 1 York', have invented certain new and useful Improvements in Type-\Vrit-ing Machmes, of which the following is a specification.

My invention relatesto typewritmg ma'-' chines."

is necessary to 'etfect a requisite space to begin the'next'sentence by actuating thespace k'ey then depressing the shift key-and holding itdown; then writing the'capital l letter, and. themreleasing the shift. key.

t-ween'the termination of one sentence and the beg'i'nningof the next, and this Oltlluarily r three separate actuations of the spacgkey, which, in addition to'depressing the -shi ftk'e y writing the character, and

garded assiiloperations. -By the present invention l; provide means by which I am cnabled'to etl'ei't the same result by two operat ions,- thus savingfour operations when starting to write each'sentence.

One of the main objects of my invention is to provide means of the character specified above, although other objects will ap- 'lo the above and other ends which will hereinafter appear, my invention consists in the features .of construction, arrangements of parts and combinations of devices set forth in the following description and pal" ticularlv pointed out in the appended claims.

lo the accompanvin; drawings in which like reference characters indicate like parts in the various views. Figure l is a vertical, central. fore and aft, sectional view of one form of typewriting machine. embodying my invention, the parts being shown in this figure in the normal position. Fig. 2 is a fragmentary skeletonized side elevation showing some of the parts represented in Fig.- 1 and representing the part'sas they appear at the termination of'a depression of the space key for ordinary letter spacing operation. Fig. 3 is a like view of the same showing the arts as they appear when thespace key is dhpressed to the limit" Specification of Letters Patent. Application filed my '2, 1

912. Serial No. #01154.

of its increment to effect a case shift opera-- i t'ion and a double letter space movement Fig. l is a fragmentary of the carriage. side elevation of some of the parts repre" sented in the preceding figures but showing the parts as they appear after the space key has returned to normal position and the case. shift mechanism has been locked in its shifted position. Fig' 5 is a like view of the same; representing the parts at the itrstant that the case shift lock" mechanismiis automaticallyoperating case shift locking- Patented M ar. 25, 1913.

mechanism is rendered inoperative. ig. 7

is a fragmentary detail front elevation with parts in section of the space key or bar and somchofthe. associated parts. Fig.- 8 is'alike view of aportion of the same, showing" the parts disposed as they appear at the full extent of depression of the space key effect ed from an actuation ofthe auxiliary key'. Fig. 9 is an enhirged detail fragmentary side elevation of the escapementmechanism showing the parts disposed as they ap ar' atthe depression of the space key to' a 0rd a single letter space movement of-the car-' riage'. 1 1g. 10 is a planview of the same,

with parts broken away. Fig 11, is avijv which corresponds to Fig. 9 except that, the

parts are represented as they appear at, the

full extent of depression ofthe space key to all'ord a plural letter space movement of the carriage. Fig. 12 is a plan view of the parts as they appear in Fig. 11. Figs. 13,

14 and 15 are detail perspective. views of thethree. cscapenicut wheels forming part. of the escapement nu-chanism."Fig. 1G is an (H-- larged detail sectional view of the escapenent. wheels mounted in place. on the escapement wheel shaft. the section being taken on the line .'I''-.l of Fig. 10 and looking in the direction of the arrow at said line.

My invention, regarded from certain aspects, is in the nature of an improvement on the construction disclosed in the patent to Arthur V. Smith No. 1,015,849 dated Januarv'30, 1912.

have shown my imfention embodied in the present instance in a No. 15 Yostma.-

chine although the arrangen'ient of some may be embodied in various forms oftypewriting machines and may be variously modified to effect such an embodiment. The frame of the machine comprises side plates 1, end plates 2'and 3 and top plates 4 and ,5. The carriage comprises a truck sec- -Iti on 6 provided with oppositely grooved guide rails 7 for cooperation with anti-friction balls or rollers 8 which are likewise received in oppositely grooved fixed guide rails 9 secured at their ends tothe side plates 1 of the frame. A platen frame 10 is pivotally connected to parallel links 11. which whe haft i'sco n tr'olled by suitable escapeto. be hereinafter described by wh h a'let te-r feed movement of the carriage under cont-rolof the usual spring drum l ais'ettected'.

Theprinting 'instrumentalities, in "the present instance,'eomprise upwardly and regrwardly striking, segmentally arranged,

typebars which are actuate by drivers 21' and ,are guided by guide links 22. Actuat'ing links 23 are each connected at one endtozthe driver 21 and at its opposite end to an angular lever 24. Each angular. lever is in I turn connected to a'depending link 25 which are pivoted on the same pivot rod 4-0 on- 6 -66 is pivoted at its lower end to a key lever 26 provided with afinger key 27. A returning spring 28 is provided for each type action. one endiof the spring being'connected to the associated link 23,'the opposite erid thereof being connected to the associated driver.

.The various keylevers are pivoted at 40 and are provided with depending projections 29 which co-act with a universal bar 30 to effect an actuation of the escapeinent mechanism.

This universalbar is formed as a cross bar which extends beneath the various key levers and is connected at its ends to side arms 31 which extend 'rearwardly i() tlll(l are adjustably connected with a rock shaft 32 mounted in suitable hearings in the base of the machine. Extendingrearwardly from the rock shaft 32 is an arm 33 which constitutes a dog rocker by which a feed dog 3' is carried. A returning spring 35 is con-- nected at one end to a pin 36 and is connected at its opposite end to a fixed angular ]')lat e '37 to return the universal bar and the parts connected therewith to normal posi- 'tion. A space'key 38 is connected at its ends to rearwardly extending'lever arms 39 which which the printing key levers 26 are pivoted.

Each space key lever'39 is provided with a depending projection 41 which cooperates with the universal bar tocontrol the escapement mechanism. u In order-to effect a relative ease shifting movement between the prlnting instrumentalities and the platen I have provided the usual means by which the platen is shifted from the lower case to the upper case position. Thus a depending bracket arm 42' is fixed to a cross bar 43 on the platen frame and carries a grooved roller 44 which cooperates with a shift-rod 45. The shift rod issupported on uprightlinks 46, which are pivoted at their lower ends,as at 47,t0 case I shift key levers 48. These levers are fixed to a rock shaft 49 whiclrturns in hearings in,

the base of the machine. Each case shift? key lever 4-8 is provided with depending arm 50 to which one end of a contractile counterbalance spring 51 is connected, the opposite end of the spring being connected to a book 52 secured to the rear cross plate of the machine. 7 levers 48. being fixed to the; rocklsh'aft 49 are adapted to-turn together, and each lever carries a shift key 53 at its forward end portion; The lefthand shiftkeyslever. 48 is also provided witha shift lock key 54 car.- ried by a locking device 55 pivoted tp the shift key lever at 56', the key 54 being offset to the side of said pivot. The member 55 carries a hook 57 which is adapted toengage beneath the fixed locking device 58 secured to the base of the machine A contractile;

spring 59 is connected at one end. to the mem-f i 'ber 55 and at its oppositeend to the associated shift key lever 48. This spring is effective to normally maintain the member 55 relatively to the left-hand shift key lever;

48 in-the position indicated in full lines in Fig. .6. When, however, pressuris exerted The two case shift'keyj onthe key 54, such pressure is eifectiv; to

turn the member 55 on its pivot. into co- I10 operation with the member 58 and then to depress the shift key lever until the hook 57 reaches the lower edge of the member 58, when the member 55 will be shifted from the'full line to the dotted'line position, cugaging the member 58 to prevent a return -moven'ient of the shift key lever and the parts controlled thereby, so that uppercase wrltmg may be effected indefinitely,

The construction as thus far-described constitutes what corresponds substantially tothe ordinary equipment of the No .,l5 Yost.

machine.

In accordance with my invention I have.

provided escapement mecha nism by which va 1': able extents of feed of the carriage may be has an eseapement wheel 60. provided with 2, as shown in Fig. 16.

oppositely projecting hub members 61 and.

This escapement.

wheel is adapted to be fixed to the escaped-30 effected. Thus the escapementwheel shaft 18 on the hub 61 Three headed tie bolts 66, ($7 I and 68 extend through openings 1n the three of the shaft.

escapement wheels and are provided with nuts 69 by which the wheels 64 and 65 are prevented from displacement longitudinally These bolts are seated friction tight inflopenings in the fixed escapement wheel (30 and pass freely through openings in the loose wheels. wheels are maintained spaced apart by hublike members 70 formed on both sides of the fixed escapement wheel 60, such hubs registering with the openings in the escapement. wheel tl0.throngh which the tie bolts pass.

The loose escapement wheel (i4 is under pressure of a C-spring Tl fixed at one end in an opening 72in said wheel and connected at its opposite end in. an opening in an enlarged portion 73 of the hub' (32. A corresponding spring 74 is connected at one endv tothe enlarged portion 7 5 of the hub 61 and is connected at its opposite end to-the escapenient-,\vheel (35., as indicated at 76. -The loose escapement wheel 64 is three short slots 77 through which the bolts 66, 67 and 68 pass. 'lhe.length of each of the slots 77 is such that a limited turning movement between the loose wheel 64 and fixed wheel 60 may be etlected. The extent of this movement is represented by the distance between the' teefh of the wheels, as shown in Fig. 10. The escapement wheel 65 on the other hand is provided with three long slots 78 through which the bolts 66, (37 and (38 pass. The extent of each of the slots 78 is such to atl'ord a double letter space movement of the wheel (35 relatively to the fixed wheel (30, such movement corresponding to the two tooth space distances of the escapeincnt wheel (35. The springs'T'l and 74- end to advance their respective cscapement wheels in the direction of the feed of the wheels. Thus the spring 71 is otter-live to advance its est-armament wheel (34 a distance corresponding to the distanceiictwecn the teeth of the wheels as the same is indicated in Fig. 10, whereas the spring 74 is etl'cctive to advance its wheel (35 a distance corresponding to the distance. of two tooth spaces of the escapement wheel. The independent movement of both loose wheels relatively to the fixed wheel is limited in both directions by the bolts 66, 67 and (38.

In the normal positions of the parts the feed dog 34 engages a tooth of the escape ment wheel (54 and at this time the teeth of all three cscapement wheelswill be maintained in alinement. The feed dog normally I engaging a tooth ofthe escapement wheel (il l by atl'ording 2y feed movement of the car- The escapement provided with carriage spring will overcoine ='-tl 1 causes the spring 71 to be placed-under strain by the excessive pressure of the carrii e spring. Vlhen, however, the space key is epressed for ordinary spacing or aprinting key is depressedflhedogroc-ker 33 will be moved upwardly to disengage the feed dog from the escapement wheel fi t and to engage an alined tooth of the'fixedescapement wheel 60, as representedin-Figs'ttl'arljd 10. When the es'capement wheel 64'= is released its spring 71 isctt'ective to advance it to the position shown in Fig. 11 and onj-the return movement of the dog rocker the feed dog 3-1 will be moved into the path-of the next advancing tooth of the escapement wheel 64, thereby-affording a letter .spacq movementof; the carriage; When the parts are again in normal POSltlQlt the-teethof the three .escapement wheels" will be againuin alinemenf. v

If the fullest extent of depressionbe given. to the s ace key this is' efl'ectiveflto movethe dog roc er 33' upwardly-tothe position rep-:- resentedin Fig; 11 to. move the feedldoginto' engagement with atpothf of the escapementt- Q0 wheel: 65. f The excessive pressure of the pressu re of the spring .74 and theearriager wil heal-j lowed to. travel a distance-oft o -letterspaces until thebolts 66,- 67iand ;68 reach the '95 advance ends of the respective slots in- ;which they are seated, as indicated '1I1 F;lg, ,1g," 8.nd further movement of the carriage-e 18:13!!- rested. However, duringa the 'retnrn 'xnove-' ment of the dog rockeran additional letterh oo space movement-of the carEiageiQeEectedJ This is due to thefect'thatwhen theffeedf dog releases the escapement. wheel64 in'its' movement from said wheel to the escapement wheel 65, a slight advance of the escapement wheel 64 was etfected,'so that at v the-termination of the down stroke of the key and the double letter space advance of the carriage, the parts will appear as represented in, Fig. 12, It. will be seen that a re- 1 turn movement of the dog rocker from this position attor ls a further letter space ad-' vancc inovement of the carriage in the same manner as when. the feed dog is merely moved from the escapenn-nt wheel 64 to the cscapeincnt wheel (30 and back again. It will be seen from the foregoing de-f scription that it follows that a depressionf of the space'kc-y to one extent is effective to move the dog rocker to the position shown in Fig. 9 and on release of the space. key a single letter space movement of 'the carriage will be effected, whereas if the dog rocker he moved to the position indicated in Fig. ll, a double letter space movement of the carriage will be effected on the down stroke of the key and an additional single letter space movement of the carriage will be effected on the upstroke of the key, there- 89 bears at its-u pper end"againstthe bottom of the keyx88and"-at its lowerendlagainst' the bottom wall of -a cut-on riage corresponding to three. letter. space distances at each complete actuation of the spacekey for the full sion. Y

In order to assurean. actuation .of the space-keyandto limit the extent of its depression when it'is intended for use merely for ordinary letterspaeing, I have provide atixed stop 79 which isformed as a part of a bracket 80 secured by-a screw 81 to the base of the machine. A cooperating stop 82 is formed as a part of 'o'ras a depending arm on, an angularzlever 83 which is pivoted at 84 to a dep'ending'fbracket arm 85 secured to the bottom of thej'space key. 38. A- substantiallyv horizontallydisposegl arm of the angula/r lever pivoted-therhto atv 86 a keystem 87 which extei ds through an opening formed in the space key. The upper endof this key 's'temjis provided with an auxiliary key 88 and'an expansion spring r depression formed-in thesspacefikeyb I p tending arm' on the :iirigiilar-i lii I; jis -pivr oted at 90 to a horizontally e xtendingrod, connecting device or {latching-"member This rod; extends tothe'f left beneath the' space key and is guiiledatits freeend portion by anzapertur'edbra'cketi92 secured to the bottom of the ace key.-'- The mnstruc-' tion is such there orefthat -the -connecti ng. -member isfixed to. travel upand'down with the space'key but may he'movedjindependently-thereo'f in ahor-izont'al-'direction.

In the normal positions of the parts the rod 91 is maintained clear and out of the path of a forwardly projecting arm 93' on the left-hand shift key -lever'48.l When the spacel y is employed for ordinary spacing operations a depression thereof, effected by a direct operation on the space-key, is-etfective to move it downwardly from the normal position represented in' Fig. 1 to the position represented in Figs. .7 and 8, from which it will be seen that the space key islimit ed inits downward" movement by the engagement of the stop 82 with the fixed stop 79. The means forthus limitingthe depre sion of the space key a re effective to insure a movement of the feed (log from the escapenient wheel (34 to the escapemcnt wheel-60 and back again and no farther. If, on the other hand, the operator completes a sentence, the depression of the anxiliary key 88 is eflective' to move the stop 82 out of coiiperative'relatir-n with the-stop 79 and-also to depress the spacekey beyon'd the position whereitis normally arrested by the cotiperation of the-stops 79 and 82.

' .At the same time-the depression'of the auxiliary key ,88 is effective to movethe latching device 91 to the leftover the projection 93 on the left-hand shift 'key lever and a extent of its depresp'wardlyaey "with-the other features of my, invention disfinbefore' referred to.

continued downward movement of the space key, through pressure exerted on the aux-' iliary key 88, is effective to depress the shift key and thus bring about acase shifting movement of the platen. Incertain circumstances the mechanism 'thus far described might be johnd'sufiicientj for all purposes, for a depression oft-he auxiliary key 88 effects a case shift op era-' tion and a plural letter space movement of the carriage in order to bring the carriage to a position where a capital letter may be written to begin a new sentence while pressure is maintained on the auxiliary key. However, I prefer toemploy automatically operating means of the same'general character as that disclosed. in the patent to Arthur \V. Smith hereinbefore referred to,- for automatically locking the shifted part or platen in its case shift position and for 3 subsequent-1y automatically releasingghe case shift lock mechanism by an actuation of a printing instrumentali-ty. In the present instance I have combined Zsuch .me'ang closed. herein. Such automatically actuated v locking and releasing meanscomprise an en:

,fgaging member 94: pivoted at 9:70:11 the left hand-shiftkey lever 48. This'imember' is' substantially U-shap'ed-jn. form and is pro- .adapted to engage under the rear edge 97] of the fixed angularlocking plate 37'here A second membr -98 is pivoted at 99 to the vmember '94. ,The 100 'member*-98 isin the nature of'an' angular leverzwhich has one arm 100 which extends througha guide slot. in the angulai; l ocking plate 37 and bears at-its free end poly-tion against the bottom wall of the horizoit-lally disposed portion of the fixed-angular lock;= ingplate and is adapted to fulcrum thereon. The upright arm of the member 98 is in the nature of a pawl 101 which, when the 1 parts are in the positions represented in Fig. {10 4, engages beneath the universal bar 30. A contractile. spring 102 is connected atone end to the member 98 and is connected at its opposite end to an angular lever or control? ling member 103. This member is pivoted to a. fixed part of the machine, as at 104, and is provided with a finger piece-105 by which it may be turned on its pivot from the position indicated in Figs. land (5 to that represented in Fig. 3. Stops 106, 107. project from the member 103 at substantially right angles to the plane thereof and are adapted to engage a member 108 on which the part 103 is pivoted.' In this manner the pivotal movement of "the member 103 is limited and there is sutlicient friction between the-member and the part on' which it is mounted to retain it in either of the positions to which it may 1pc shifted. It will he understood that whe the member 103 is Fig. 3, is effective to bring the engaging.

operative as will hereinafter appear. In theoperation of this automatically actuated case shiftmoehanism a depression-of the spaoe key 38 to its fullest extent, as'represented 1n nose 96 into locking engagei'nent with the fixed angular looking plate 37. -Tlns same depression of the space key is etl'ective to move the feed dog from the escapement wheel (St to the escapement-wheel 65, thus affording aldouble letter space movement. on the down stroke of the space key. A release of the space key is efl'ective to produce an additional letter spaoejmovementof the carriage'in the manner hereinbe fore'described and to elevatethe universalbar from the gpositiohshown in' Figt 3 t-0'th'at represented in Fig. 4. -As;- s oon 'as' theuniversalbhr passes upabove the "engaging end-0mm; pal 101, the spring 102is efi'ectivetottirzi' It-he member 98 on: its pivot 99 and to bring theipau' l '101 beneath't-he universalberfas represented in Figi 4. The caseshift mocha,

- nism, however, is still retained in'the shitted position by the engagementfbetweenthe members 94- and' 37.

strikes the requisite key to writethe capi-' tal letter to begin 'a new" sentence. Thismovement is effective to depress the universal. bar to effect a singleletter space movement "of the carriage by moving thedog 34 from the eseapementwheel 64 to the escapement wheel (30 and hack again. During the first portion of the downward movementof the universal bar, effected by the actuation of-ihe requisite printing key, the

member 98 israrricd down with the universal bar through the engagement of the pawl 101 beneatlrthe bar. The effect of this downward movement of the member 98 is I power exerted by the spring 102. it follows,

therefore. that when the case shift mechanism is actuated by either of the ease shift keys 53, or through a con'iplote depression of the space key 38. the locking: member 94 will not be thrown into engagement with the cooperating fixed locking member 37 nor-will leased from the depressed shift key or the space'key, the partswill immediately return member 55 from t-hepressure-of the "platen :and the mrts whichs hold1'it shifted,- and the the pawl 101 be: forced into cooperative relation with the universal bar, as will be clearly understood from an inspection of Fig. 6. Vvhenptherefore, pressure is reto normal position and the platen will not be lockedin its-shifted position. 1

Should the operator desire to: maintain the platenin its shifted position for an indefinite period in orderthat upper case char a'eters alone may lie-written, .-it" is .merely necessary to depress the permanent ease .shift key 54 to effect an engagement with the member-.58, thereby, locking't-heplaten in the shifted position. In order to release the lockingmember 55 it ism'e-rely necessary to exert a downward pressure on. the left-hand shift .keya53 suflicientto relieve. the: locking :spring- 59=-is then elfec.tive tonvithdraw the member 66 from jengagementqwith :the lock- -'ing'dev'ice' fi8z and the -platen: may: returnto r From thiiforeg oinglzlescriptionE itqvillhe d unevet-he stopsl'8 2' froni' cooperatiregrelationwiwith ithe stop i9;torpermitzak'full extent Fd( J\\'I I2-;

the tallest exte'nttito a omation; operative oonnctionabetu'e -h space key rand thecase?sliiftmeehanisin iito uate the ease shiftameeh anis'm ;??l'0.-l0])erl\l e: -a uton'iatic'ally actuated'raseshifhlocl 'ieelianism and"therehy reta-inithe:pl:i-te1r; .ats shifted prsition'; andtoit'fiect :i Ietter -feed morenlent ofthe carriagecurrespomling.to a di tanro of three letter spares'lin order to-hring the carriage to a position where the Capital letter which is to begin the next sentence may be inn'nediately written. it will be seen,moreo\-'er,thatasingle operation of the printing keyis eii'urtive to 'cause fan imprint 'of'the corresponding character and to release the case shift lot-king meahsio enable the platen to return to its normal position after a single upper vase character has been written. has -heen hereinbeforc explained, the work effected by a single actuation of each of the keys, i. In, an aetuatton to its fullest extent of the sparing; key and an actuation ofytheprinting key, in the present construction isefi'ective to-acconiplish what ordinarily requires six operations to produce. \Vhile I have shown one embodiment of my'invention, it should he understood that various changes may be made without departing {mm the spirit of my invention and that certain-features mavhe used without others, und'that if desired theautomatically operating means;- for locking-and releasing the case shift mechanism may he dispensed with entirely.

\Vhat I claim as new and desire to secure by Letters Patent, is v 1, In a typewrit-in'g machine, the combination of a carriage, a platen, printin instrnmentalities, case shift means for e ecting a relativecase shifting movement between the-platen and the printing instrumentalities, and means for effecting at a single operation a letter feed movement of the carriage for a distance corresponding to a plurality of letter spaces and an actuation of the. case shiftineans.

2. In a typew'riting machine, the combination of a' carriage, a platen, printin -instrumentalities,case shift, means for e ecting a relative case-shifting, movement between the platen and the printing instrumentalities, means for effecting ata singleoperation a' letter feed movement of the carrlage for a distance corresponding to a plurality of letter spaces and an actuation of the case shift means, means forlocking the shifted part in the case position to which it has been moved, and automatically operat ing means for releasing said locking means I at the first actuation mentality.

3. In a typewriting machine, the combination of a carriage, a laten, printin instrumentalities,-case shi means for eect ing a relative ease shifting movement be" tween the-platen and the printing instrumentali ties, means for effecting at'a single operation a letter feed movement of the carriage for a distance cerres nding to a plurality of letter spaces an an actuation of of a printing instruthe case shift means, means for locking the 40.

shifted part in the case position to which it has been moved, automatically operating means for releasing said locking means at the first actuation of a printing instrumentality, a-ndcase shift. locking means operable at will for locking the shifted part in the shifted position and for maintaining it in such position indefinitely, the automatically operating releasing means being ineffective to release the case shift mechanism from control of said last mentioned case shift locking means. I

4. In a typewriting machine, the combination of a carriage, a platen, printing instrumentalities, case shift means for effect ing a relative ease shifting movement between the platen and the printing instrumentalities, means for effecting at a single operation a letter feed movement of the carriage for a distance corresponding to a plurality of letter spaces and an actuation of the case shift means, means for locking the shifted part in the case position to which it. has been moved, automatically operating means for releasing said locking means at the first actuation of a printing instrumentality, a nd means operable at will for throw mg said automatically operating case shift. locking and releasing means out of operation. i I

5, In a t-ypewriting machine, the combination of a carriage, a laten, printin .in-

strumentalities, case'shi t means for e ectmg a relative ease shifting. movement between the platen and the printing instrued position and for maintaining it in. such position indefinitely, the automaticallyoperating. releasing'means being ineffective to release the case shift mechanism from control of said lastmentioned case shift looking means, and means operable at will for throwing said automatically operating case shift locking and releasing means out of operation. v y

6. In a typewrit-ing machine, the'combination of a carriage, escapement mechanism effective to afford asingle' letter spacemove- .ment oftheicarriage aheach actuation or a movement corresponding to a plurality of letter spaces as may be desired, case shift means, and means effective-by a. single operation for actuating ,said case shiftfmeans and for controlling .the escapement mechanism to afford a movement of the carriage for a. plurality of letter spaces. p 7. In a typewriting machine, the combination ,of a carriage, esc'apement mechanism effective to afford a single letter spaee movement of the carriage at each actuation or a movementeorresponding to a plurahtyof letter spaces as may be desired, case shiftmeans, means effective by a single opera tion for actuating said case shift. means and for controlling the escapement mechanism to afford a movement of the carriage for a.

plurality of letter spaces, automatically o p-' crating means for lockm the case sh ft means in its shifted position, printing instrumentalities, and means controlled by an actuation of any of said printing instru-.

mentalities for releasing said case shift locking means.

8. In a typewriting machine, the combma; tionof a carriage, a letter space key, means for limiting the extent of depression of said key and thereby rendering it operative solely for controlling the letter space movements of the carriage, case shift mechanism controlled by a further extent of depression of thespace key, and means operable at will means operable at 1 will for locklng the shi ted part in theshifb for. rendering said limiting. means ineffecvtive so that a full extent of depression may be given the spacekey to actuate said case shift mechanism.

'9, In a typewriting machine, the combination of a carriage,i a letter space key, means for limiting theextent'of depression of said kev and thereby rendering it operative solely for controlling the letter space move- .ments of the carriage, case shift mechanism controlled by a further extent of depression -of-the space key, and an auxiliary key operable forrendering the limiting means ineffective and for giving a full extent of de-. pression to the space key to actuate the case shift mechanism.

10. In a .typewriting machine, the combinationof, a-carriage, aletter space key,

- means-for limiting the extentot repression nismcontrolledt by. a-Vfurther extent-of de- I of said keyi and therebyrendering itoper-. ative=sollyfoneontiolling the letter space movements of, thecarriage, case-shift mechapressionof thespacekey, and .an auxiliary key operable; for i-trendering "the limiting means ine'fiectiVe and fer giving av fullexi= tent ;ofdepression to; the space key to, actuate the case shiftmechanism, said auxiliary key being carriedbyandpperating on said space key.

all: In a type vritlng,machme, the combi- .vnationof a carr age, alettei; space,,key. case 7 shiftmechanisnnan" auxiliary key, and norlnally disconnectedmeans controlledby said au'xiliaryakey forymperatirelyconnecting ;said;letter :space.. key 3 and (case, .shift mecha- 'nism sothat a;dQPFeSSiQmOfIhe-Space key is effectiveto act-uatelthepase shiftmechanism.

12. In atypeu'riting machine, the combination of a carriage. a letter space key, case shift.,mechanism, an auxiliary key, and

'' means controlled bysaidauxiliary key for operatively connecting said letter space key and case shift mechanism and/ or varying the extent of depression that niay be given to the letter space key.

13. In a typewriting machine, the combination of a carriage, a letter space key, case shiftmechanism, an auxiiiary key, and

means controlled by said auxiliary key for operatively connecting said letter space key an'd case shift mechanism and for operating the letter space key and varying the extent of depression that may be given it.

14. In a typewriting machine, the combi nation of a carriage, a letter space key, means for limitixi the extentof depression of said key and t ereby rendering it operative solely for controlling the letter space movements of the carriage. case'shift mecha nism controlled by a further extent of depression of the space key, means operable at will for rendering saidlimiting means ineffective so that a fullextent of depression maybe given the space key to actuate said case shift mechanism, automatically operating case shift locking means, printing ll'lstrumentalities, and means controlled by an vactuation of any of said printing instrumentalities for releasing said case Shift locking means.

15. In a typewriting machine, the comb nation of a carriage, a letter s ace' key, means for limitin I of said key and t ereby rendering it operative solely for controlling the letter space movements of thecarriage, case shift mecha nism controlled by a further extent of depression of the space key, means operable at will for rendering said limiting means ineffective so that a full extent of'depression may be given the space key to actuate said case shift mechanism, and means for effecting a feed movement of the carriage for a distance which corresponds to a plurality of letter spaces at each actuation of the case shiftmechanisni etl'ectedthrough-an operation of the space key. Y

16. In a typeu'riting machine, thecombination of a carria e, a. letter space key, means for limiting tlre'extent of depression of said key and: thereby rendering it operative "solely for controlling the letter space movements of thecarriage, case shift 'mechav nism controlled by a further extent of dethe extent of repression V pression of thespace key, means operable at will for rendering-said limiting means ineffective so that 'a full extent" of depresslonmaybe given the space key toactuate said case shift mechanism, meansforetl'ecting a feed movemenhof the carriage for a distance which corresponds to a plurality of letter spaces ateach actuation of the case shift mechanism effected through an operation of the space key, automatically operating case shift locking means, printing instrumentalities, and means controlled by an case shift mechanism, said auxiliary key be ing carried by and operating on said space key, and means for effecting a letter space movement of the carriage for a distance which corresponds to a plurality of letter spaces at each actuation of the space key throughout afull extent of its depression. 18. In a typewritmg mach ne, the com-. bination of a carriage, a letter space key,

. ative solely for .movements of the carriage, case shift mechanism controlled by a further extent ofde means for-limiting the extent of depression of said key and thereby rendering-it opercontrolling the letter space pres ion of the space key, an auxiliary key operable for rendering the limiting means ineffective and for giving a full extent of depression. to the space key to-actuate the case shift mechanism, said auxiliary key being carried by and operating on said space key,

means for'effecting a letter space movement of the carriage for a distance which corresponds to a plurality of letter spaces at. each actuation of the space .key throughout a full extent of its depression, automatically,.(ipcrating case shift locking means, printing instrumentalities, and means controlled by an operation of any of said printing instrumentalities forreleasing saidcase shift locking means.

19. In atypewriting machine, the combination of a carriage, means for limiting the ative solely for controlling the letter-space movements of the carriage, case shift mech further extent-of depression of the space key, an auxiliary .key operable for anism controlled by a iary key being carried by and operating on said space key, meansfor effecting a letter space movement of the carriage. for a distance which corresponds to a plurallty of letter spaces at each actuation of the space key throughout a full extent-of its depression, automatically operating case. shift locking means, printing instrumentalities,

- means controlled by an operation of any of said printing inst rumentalities for releasing said case shift locking means, and means operable at will for rendering said automatically operating case shift locking'means inoperative.

20. In a typewriting machine, the combination of a carriage, a letter ace key,

means for limiting the extent of epression of said key and theteby rendering it operative solely for controlling the letter space movements of the carriage, case shift mechanism controlled by a further extent of depression of the space key, anauxihary key operable for rendering the limiting means ineffective and. for giving a full extent of depression to the space key to actuate the case shift mechanism, said auxiliary key being carried by and operating on said space key, menus for. effecting, a letter space movement of the carriage for a distance which corresponds to a plurality of letter spaces at each actuation of the space key throughout a full extent of its depression,

a letter space key, extent of depression" "of said key and thereby rendering 1t operautomatically operating case shift locking means, "printing instrumentalities, means. controlled by an operation of any of said printing instrumentalities for releasing said case shift locking means, and case shift lock- 1n means operable at will for locking the shiftedpartin the shifted position and for maintaining it in such positionindefinitely, the automatically operatingreleasing means being inefiective to release the case shift mechanismfrom control of saidlast. mentioned case shift locking means.

2-1. In a typewriting machine, the combination of a carriage, a letter space key, means for limiting the'extent of depression of said key and thereby rendering itoperative solely for controlling the letter space movements of the'carriage, case shift mechanism controlled ,bya further extent of depression of the Space key, an auxiliary key operable for rendering vthe limiting means 'inelfectiveland for giving 'a full extent ofdepres'sion to the space key to actuate the case shift mechanism, said .auxiliary key being carriedby and operating on said 9 space key, means for effecting a letter space movement of the carriage for a distance which" corresponds to a. plurality of letter spaces at each actuation of the space key throughout afull extent of its depressiong \auto'matically operating case shift locking means, printing instrumentali'ties, means controlled by an operation of any of said printing instrumentalities for releasing said case shift locking means, means operable at. 100

'vvill for,-rendering said automatically operating case' shift locking 'means -1noper ative, 'and'case shift, locking means operable at will for locking the shifted part in the shifted position and for maintaining it in, such position indefinitely, the automatically operating releasing meansbeing ineffective to release the case shift .inechanisnr from control of said la'stmentioned case shift locking means.

22. In a typewriting machine, the combi nation of a carriage, case shift mechanism,. a letter space key .-an auxiliary key carried by said space key and movable'indepcnd: ently thereof and adapted to actuate said 5 space key a stop which is controlled by the independent movement of said auxiliary key and is adapted to be moved thereby to an inoperative position to afford a further extent of depression of said space key. and a latching device which also is controlled by the independent movement of the auxiliary key and which is moved thereby to effect an operative connection with the case shift mechanism." U 126 23. In a typewriting machine, the combination of a carriage, case shift mechanism, av letter space key, an auxiliary key carried by said space key and movable independently by said.space kc 24. .In a typewriting machine, the combination of a carriage,-case shiftmechanism,

a letter space key, an auxiliary key carried 4 and movable independ-- ently thereof an adapted to actuate said space key, a stop whichis controlled bythe independent movement of said auxiliary key and is adapted to be moved thereby toan inoperative position to afford a further extent of, depression of said space key, a latching device which also is controlled by the independent movementof the auxiliary keyand which is moved thereby to effect an operative connection with the case shift 7 mechanism, automatically operating case inde shift locking means, printing instrumentalities, and means controlled by the actuation of any of said printing instrumentalities for releasing said .case shift locking means. I

V 25.. In a typewriting niachine, the combination of a carriage, case shift mechanism, a letter space key, an auxiliary key carried by said space key and movable independently thereof and adapted to actuate said space key, a stop which is controlled by the ndent movement of said aux liary key and is adapted to be'moved thereby to an in operative position to afford a further extent of depression of said space key,.a latching device which also is controlled by the independent movement of the auxiliary key and which is moved thereby to effect an operativeconnection'with the case shift mechanism, automatically operating case shift locking means, printing instrumentalities, means controlled by the actuation of any of said printing instrumentalities for releasing said case shift locking means, and means controlled by the further extent of depression ofthe space key to effect a feed movement of the carriage a distance corresponding to a plurality of letter spaces. Y

26. In a typewriting machine, the combination of a power driven carriage, variable escapement mechanism thereforwhich af fords an extent of feed movement of one or more letter spaces at each operation as may.

be desired, a key, and means by which said key is rendered effective to control" the es,

capement mechanism to afford a'feed of the 'carriage for a distance of one or more letter spaces at each operation of said key depending on the extent of dip of the key.

' 27. In a typewriting machine, the combination of a power driven carriage, variable escapement mechanism therefor which affords an extent of feed movement of one or more letter spaces at each operation as may" be desired, printing instrumentalities, means for controlling the escapement mechanism to afford a single letter space movement of the carriage at each actuation of a printing instrumentality, a space key, and means by which said key-is rendered effective to control the escapement mechanism to afford afeed of the carriage for a distance of one or more letter spaces at each operation dependingon the extent of dip of the space key. a

28. In a typewriting machine, thecombination of a power driven carriage, variable escapement mechanism therefor which affords an extent of feed movementof one or p more letter spaces each operation as may be desired, printing instrumentalities, means for controlling the escapement mechani's m to afford a single letter space movement of the carriage at each actuation of a printing in-fl strumentality, a space-key, means by which said key is rendered effective to control'the' 1 escapement mechanism to afford a feed'of' the carriage for a distance ofone or more letter spaces at each operation depending on means which are actuated concurrently'with the space key when the latter receives its greatest extentof dip;

the extent of dip' of the key,- and case shift 29. In a typewriting machine, the combinatioir'of a power driven carriage, variable escapement mechanism therefor which af-l fords an extent of feed movement of one or more letter spaces at each operation as may be desired, printinginstrumentalities, means for controlling the escapement mechanism' to afford a. single letter space movement of the carriage at each actuation of a printing instrumentality, a. space key, means by which said key is rendered effective to control the escapen'ient mechanism to afford a feed of the carriage for a distance of one or more letter spaces at each operation depending on the extent of dip of the key, case shift means which are actuated concurrently With the space key when the latter receives its greatest extent of dip, automatically operating case shift locking means, and means for releasing said case shift locking means bythe actuation of any of said printing instruinentalities. '30, In'a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprising three feed racks and a single. dog, the movement of the dog from the first rack to the second -and back again affording 'a single letter space movement of the carriage and the movement ofthe dog from the first. rack to the third and back again affording a movement of the carriage a distance corresponding toaplurality of letter s aces; a key;and means cont-rolled by said ey for moving said dog from the first rack to the second or from the -first rack to the third as may be desired. y r 31. Ina typewriting machine, the combination of a power dr ven carriage; escapement mechanism therefor com using three feed racks and a sm le dog, tie'movement of the dog from the 'rst rack to the second and back again affording a single letter space movement of the carriage and the movement of the dog from the first .rack to the third and back againalfording a movement of the carriage a distance corresponding to a plurality of letter spaces; case shift mechanism; and means for effeetin a movement ofv the dog concurrently with the operation of-lhe case shift mechanism. V

32. In' a typewi'iting machine, the combination of a power drivencarriage; escape ment mechanism therefor comprising-three feed racks and a single dog, the movement of the dog from the first rack to the second and back again affordinga single letter space ,Ino\-'ement of the carriage and the movement of the dog from thevfirst rack to; the third'and hack-again affording a move},-

ment of the carriagea distance corrcspon ing to. a plurality of-letter spaces; the space key of the" machine; and means undercontrol of said space key foig movin said dog from the first rack to. the-second or third dependingv on the extent ofzgdip of: said p e. y

33 In a typewriting machine, combination of a power driven carriage; escape:

ment mechanism therefor comprising three feed racks and a single dog, the movement of the dog from the first rack to the second and back again affording a single letter space movement of the carria e and the.

movement of the dog from the first rack to the third and back again affording a movement of the'carriage a distance corresponding to a plurality of letter spaces; the space 7 key of the machine; means under control of said space key for moving said dog from the first rack to the second or third depending on the extent of dip of said space key; case from the first rack to the third movement of the dogifroinl-the first rack to the third and back again affording a move ment of the carriage a distance corresponding to a plurality of letter spaces; the space key of the machine; means under control of said space key for moving said dog from the first rack to the second or third depending .on the extent of dip of-s aid space key;

means for normally limiting -the extent of dip of the space key for producing a single letter space feed of the carriage; a nd an auxiliary key which is effective to re'nder said limiting means ineffective to limit the depression of the space key so that a plural letter space feed of the carriage may be effected. J

.35. In a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprising three feed racks and a single dog, the movement. of the dog from the first rack to the second and ha k again affording a single letter space movement of the carriage and the movementof the dog from-the first' rack'to the third I and back again affording a movement of the carriage a distance corresponding to a plurality ofalctter spaces; the space key-of the machine; means under control of said space key formo og from the first rack to the second or third'(lepending on the ex-- tent of- (lip of said space key; means for normally limiting the extent of dip of the space key for producing a single letter space feed of the carriage; an auxiliary key which ,is effective to render said limiting means ineffective to limitthe depression of the space key so thata plural letter spacefeed of the carriage may be effected; and case shift mechanism actuated concurrently with the space key on a full depression of the latter. i

36. In a'typewrit-ing machine, the combination of a power driven carriage; escape- .m cnt mechanism therefor comprising three feed racks and a single dog, the movement of the dog from the first rack to the second and hack again affording a single letter space movement of the carriage and the movement of the dog from the first rack to the third and back again affording a move ment of the carriage a distance correspondingto a plurality of letter spaces; case shift mechanism; means for effecting amovement of thedog from the first rack to the third concurrently with the operation of the case shift mechanism; automatically operating case shift locking means; printing instrumcntalities; and means for releasing the case shift locking means on the actuation of any of said printing instrumentalities.

37. In a'typewriting machine, the combination of a.po\ver driven carriage; escapement mechanism therefor comprising three feed racks and a single. dog, the movement of. the dog from the first rack to the second and back again affording a single letter spalce' movement of the carriage and the .movement of the dog from the first rack to the third-and back again affording a movement of the carriage a distance corresponding to a plurality ofletter spaces; the space key of the machine; means under control of said space key for moving said (16g from the first rack to the second or third dependin on the extent of dip of said space key; case shift mechanism; means for actuating said case shift mechanism concurrently with the space key when the latter receives .its' fullest extent of dipi; automatically operating case shiftlocking means; printing instrumentalities; and means for releasing the case shift locking means on the actuation of any of. said printing instru'mentalities. V

38. In a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprising two loose escapement wheels, an interposed fixed escapement'wheel, and a feed dog movable from a loose wheel to the fixed wheel and back again or from one loose wheel to another and back again to afford one or moreletterspace movements of the carriage at each operation as may be desired; and a key forefi'ecting difi'erent'extents of movementof the dog. I

'39. In a typewriting-machine, the combination of a powerdriven carriage; escapement mechanism therefor comprising two loose escapement wheels, an interposed fixed escapement wheel, and a feed dog movable from a loose wheel to the fixed wheel and back again or'from one loose wheel to another and back again to afford one or more letter space movements of the carriage at each operation as may be desired; a key for effecting different extents of movement of the dog depending on the extent of dip of the key; and case shift mechanism actuated by said key.

4 0. In a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprising two loose esca pement wheels, an interposed fixed escapement wheel, and a feed dog movable from a loose wheel to the fixed wheel and back again or from one loose wheel to another and back again to afford one or more letter space movements of the carriage at each other and back again to afford one or more letter space movements of the carriage at each operation as may desired; a key for effecting different extents of movement of the dog; case shift'mechanism'; means for rendering said key operative to actuate said case shift mechanism;automatically actuatcd case shift locking means; printing instrumentalities; and means controlled by an actuation of any of said printing instrumentalities for releasing said case shift looking means.

42. In a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprisin two loose escapement wheels, an'interpose fixed escapement wheel, and a feed dog movable from a loose wheel to the fixed wheel and back again or from one loose wheeltoanother and back again to afford .one or more letter space movements of the carriage. at each oper'ation as may be desired; and a space key for controlling said -feed dog, the extent of depression of said space key determining the movement of the dog for a single'or a i 9 4 plural letter spacemovement of the carriage.

43. In a typewriting machine, the combi- ,nation of a power driven carriage; escapement mechanism therefor com'prisingztwo loose escapement wheels, an interposed fixed from 'a loose wheel to'the'fixed wheel and -escapement wheel, and a feed dog movable back again or from one loose wheel to another and back again to afford one or more letter space movements of the carriage at each operation as may be'desired; a space key for controlling said feed dog, the extent j of depression of said space key determining the movement of the dog for a single or a plural letter space movement .of the carriage; and case shift mechanism actuated concurrently with the space key during a full depression of the latter.

44. In a typewriting machine, the combination of a power driven carriage; escapement mechanism therefor comprising two loose escapement wheels, an interposed fixed cscapement wheel, and a feed dog movable from a loose wheel to the fixe'd wheel and back again or from one loose 'wheel to another and back again to afford one or more letter space movements of the-car riage at each operation as may be desired; a space key for controlling said feed dog, the exte t of depression of said space key dete'rmi g .the movement of the dog for a single one plural letter space movement of the carriage case sh ft mechanism actuated concurrently with the space key during a full depression of the latter; automatically actuated case shift locking means; printing instrumentalities; and means for effecting a release of the case shift locking means by an actuation of any of the printi instrumentalities.

45. In a typewriting machine, the combination of a 'power driven carriage; escapement mechanism therefor comprising two loose escapementwheels, an interposed fixed escapement wheel, and a feed dog movable from a loose'w'heel to the fixed wheel and hack again or from one loose wheel to another and back again to afford one .or more letter space movementsof the carriage at each operation as may be desired; a space key operatively connected to said feed'dog to control its movement; means for limiting the stroke of the space ke to effect a single letter space movement 0 the carriage; an auxiliary key; and means which enable said auxiliary key to control said limiting means to enable the space key to receive a further extent of depression to effect a plural-letter space movement at each actuation.-

46. In a typewriting machine, the combination of'a power driven carriage; escapement mechanism therefor=comprising two loose escapement wheels, an interposed fixed escapement wheel and a.feetl dog-movable from a loose wheel to the fixed wheel and back again or fromone loose wheel to 'another and back again to afford one or more, letter space movements of the, carriagevat each operatiomasmay be desired; a space key operatively connected to said feed dog -to control its movement; means for ,limitingthe stroke of the space key to effect a single letter space movement of the. carriage; .an auxiliary key; means which enable said auxiliary key to control said limiting means to .enable'the space key to receive a further extent of depression to effect a plural l'etter space movement at each actuation;fanclcase shift mechanism actuated by such furtherextent of depression of the space key.

47. In a typew'riting machine, the combi-. nation of a power driven carriage; escapement mechanism therefor comprising two loose escapement wheels, an interposed fixed escapement wheel, and a feed dog movable from a loose wheel to the fixed wheel and back again or from one loose wheel to anotherand back again to afford one or more letter space movements of the'carriagc at each operation as may be desired; a space key operativcly connected to said feed dog to control its movement; means for limiting the stroke of the space key to effect a single letter space movement of the carriage; an auxiliary key; means which enable said auxiliary key'to control said limiting means to enable the space key' to receive a further ex tent of depression to effect a plural letter space mo'.ement at each actuation; case shift mechanism actuated by such further extentof depression of the space key automatically actuated case shift locking means; printin 'instrumentalities; and means controlled gvanactuation of any of said rin't ing instrumentalities for releasing sai case shift locking means.

48. In a typewriting'machine, the combination-of a power driven carr age; escape- ,ment mechanism therefor comprisingJwof loose eseapement wheels, an interposed fixed escapement wheel, and a feed dog fnfdvable from a loose wheel to the fixed wheel and back again or fromone loose wheel to aim other and back again to afford one or more letter space movements of the carriage at each operation as may be desired; a space key operatively connected to said feed dog a to control its movement; means for limiting the stroke of the space key to effect a single letter space movement. of the carriage; an

auxiliary key; means which enable said auxlhary key to control said limiting meansto enable the space key to receive a further extent of depression to effect a plural letter space movement. at each actuation; case- 'shift mechanism; and means controlled by said auxiliary key-for effecting an operative connect-ion between the space key and said case shift mechanism.

$9. In a typewriting machine, the combi- .nation of a power driven carriage; escape- :ment mechanism therefor comprising two letter space movements of the carriage at each operation as may be desired; a space key operatively connected to said feedLd'og to control its movement;-means for limiting the stroke of the space key to effect a single letter space movement of the carriage; an

auxiliary key; means which'enable said auxiliary key to control said limitin means to enable the space key to receive a further extent of depression to effect a plural letter space movement at each actuation; case shift mechanism; means controlled by said auxiliary key for effecting an operative connection between the space key and said case shift mechanism; automatically actuated case shift locking means; printing instruinentalities; and means controlled by an actuation of any of said printing instrumentalities for releasing said case shiftlockin means. .a

50. In a typewriting machine, the COIHlM nation of a carriage, a letter space key, case shift mcehanisn'i, an auxiliary key, a coin necting device for effecting an operative connection between the space key and case shift mechanism, said connecting device being normally out of cooperative relation wlth the case shift mechanism, 'and means cont-rolledby said auxiliary key for throw- 51, Ina typewriting machine, the combidevice.

case shift lever, a spring 52. In a typewriting machine, the combination of a carriage, a letter space key, case shift mechanism including a caseshift lever, an auxiliary'key carried by the space key, a

connecting device carried by and fixed tomove with'the space key and adapted to be moved independently of the space key into and out of cooperative relation "with the for normally maintaining the connecting evice out of cooperative relation with the shift lever, and means by which ,said auxiliary lever is effective to control the movement of the connecting device into and out of cooperative relation with said lever.

",53. In a typewriting' machine, the combination of a carriage, case shift mechanism, a

letter space key, an auxiliary key carried by said space key and movable independently thereof-and adapted to actuate said space key, and astop which is controlled by the independent movement of said auxiliary key and is' adapted to be'moved thereby to an inoperative position to atl'ord a'further extent of depression of said space key.

54. In a typewriting machine, the combination of a carriage, a platen, printing instrumentalities, case shift means, a .single key, and'means, including carriage feed devices, controlled by said key for effecting an operation of the case shift means and a letter feed movement of the carriage for a distance corresponding to a plurality of letter spaces at each actuation of said key.

\ Signed at the borough of Manhattan, city of New York, in the county of New York,

and State of New. York,-this 1st day of July I CHARLES E. SMITH. Witnesses:

' vE. M. WELLS,

- 'M. F, IIANNWEBEB,

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