US1059924A - Type-writing machine. - Google Patents

Description

w. J. B11111011. TYPE WRITING MACHINE. 1 A 'PPLIOTION FILED 11.13.25, 1911.

'PatenteaApnzamla 3 SHEETS-SHEET 2.

INVENTUFQ:

' HEATTURNEY l lnlllllllllllllulm W. J. BARRON. TYPE WRITING MACHINE.

APPLIOKTIOI FILED MAILZB. 1911. I

- Patented Apr. 2v2, 1913 3 SHEBTSFSHEET 3.

lNvE/NTDR' its free end against the body portion of the -operate with a lever arm 32'to force the pawl against the stop 33. A controlling member or link 37 is pivoted at 3S to the horizontally disposed arm 29 of the angular lever and extends upwardly therefrom. The upper end of this controlling member is provided with a finger piece -39 to facilitate actuating it. An

oli-set hook or projection 40 extends laterally from the link 37 and is adapted to copin 41 which extends in- `v'ardly from the left-hand end plate of the ten frame 16. A like pin 42 is arranged at' the opposite side of the link 37 to limit its movement away .from the pin 41. The purpose of this controlling member or link 37 will hereinafter more clearly appear.

The pawl 34 is adapted to coperate with a rack or ratchet bar 43, which extends longitudinally in the direction of the travel of the carriage, when the parts are in the positions indicated in Fig. 4. This rack or ratchet bar is provided with two series of teeth 44 and 45, respectively. The two series of teeth are spaced apart a distance which corresponds to the vertical movement of the pawl 34 with the platen frame, as the -latter is shifted in its caseshifting movements'of the platen frame. The rack 43, as will be observed upon reference to Fig. 2, is mounted on the top plate of the machine by headed screws 46.; the stems of which extend through slots 47 in the rack and engage in tapped openings in the top plate. By this construction a limited longitudinal movement of the rack on the top plate Vmay be j effected, the direction of this movement being in the general direction of the travell of the carriage. A contractile spring 48 is connected at one end to a pin 49 projecting from the top plate and at its opposite end to a pin 50 projecting forwardly from the rack bar. The pull' of this springis exerted to normally maintain the rack bar to the limit of its movement toward the right as indicated in Fig. 2.

f A depending locking lever 51 is pivoted tov the top plate by a shouldered pivot screw` 52 so that the lcking lever may swing on its pivot in the general direction of the movement of the rack bar 43. This lever extends downwardly through an opening 53 of the top plate and carries a pin 51a which is received in a slot in the rack 43 to connect the two to move together. The lever 51 is provided at its lower end with a hook-like engaging or locking member 54 which is sitvuated above the key levers and is adapted to its ends on pivot screws 60 received in tapped openings in the base of the machine. The arm 55V, hereinbefore referred to, is in the nature of a crank arm located centrally of the rock shaft 59 `andprojecting rearwardly therefrom. This crank arm is connected at its rear end to an upwardly extending link 61 which controls the usual dog rocker and the escapement mechanism. It will be understood, therefore, that when the locking projection 54 is moved to a position where it extends beneath the crank arm 55, a depression of the crank arm is prevented so that the universal bar will be locked against downward movement. This in turn locks the key levers against depression, or against a full depression, so that the printing instrumentalities and the escapement mechanism are rendered inoperative and themachine is thus-thrown out'of operation, as is -usually the case in line lock mechanism.

Thelocking'of the machine out of'operation, in the manner described, constitutes one means for indicating to the operator that the bottom edge of the sheet has been reached, as will hereinafter more clearly appear. In addition to this I prefer to provide a second means for indicating to the operator that the end of the sheet has been reached. Thus the locking Alever 51 has pivoted thereto at 62 substantially horizontally disposed link 63 connected at its opposite end to a crank arm 64. This crank arm projects from a rock shaft G5 which extends fore and aft of t-he machine, at one side thereof, and is supported at its ends on pivot` screws 66 received in tapped openings in the left-hand corner posts. 2 of'the machine. The forward end of this rock shaft has mounted thereon a visualindicator which, in the present instance, is in the nature of a crank arm (37 carrying an indicating plate or device 68 inscribed with the words End of Page, or some such warning inscription.

-ln the normal positions of the .parts this into a substantially U-shape at the'lower end thereof (see Fig. 2) so' as to provide a stop member 33 (see Figs.`2 and 5). vA`pawl 34 is pivoted by a shouldered pivot screw 35 to the lower end of the depending arm of the angular lever andaspring is ixedly connected at' one end to the pawl and bears at itsfree end against the body portion of the leverarm 32'toforce the pawl against the stop 33. 7 A controlling member or link 37 1s pivoted at 38 to the horizontally-disposed off-set hook or projection 40 extends laterarm 29 of the angular lever-and Vextends upwardly therefrom. The upper'end of this controlling member is provided with a finger piece -39 to facilitate actuating it. An

ally' from the link 37 and is adapted to` cooperate with a pin 41 which extends in- `'ardly from the left-hand end plateof the -ten frame 16. A like pin 42 is arranged at the opposite side of the link 37 to limit its movement away vfrom the pin 41. The

purpose of this controlling member or link 37 will hereinafter more clearly appear.

The pawl 34 isadapted to coperate with a rack or ratchet bar 43, which lextends long-itudinally in the direction of the travell of the carriage, when theY partsare in the positions indicated in Fig. This rack or ratchet bar isl provided with two series of teeth 44 and 45, respectively. The two series of teeth are. spaced aparta distance which corresponds to the vertical movement of the pawl 34 with the platen frame, as the latter isshifted in -its .case .shifting movements'of the platen frame. The rack 43, as will be observed upon reference to Fig. 2, is mounted on the top plate ofthe machine by headed screws 46.; the stems of which extend through slots 47 in t-he rack and engage in tapped openings in the top plate. By this construction a limited longitudinal moveerted to normally maintain the rack bar to` the limit of its movement toward the right as indicated in Fig. 2. A depending locking lever 51 is pivoted to the top plate by a shouldered pivot screw.

52 softhat the locking lever may swing on its pivot in the genral direction of the movement of the rack bar 43. This lever extends downwardly through an opening 53 of the top plate and carries a pin 51a lwhich is re-v ceived in a slot in the rack43 to connect the two to move together. The lever51 is provided at its-lower end with a hook-like engaging or lokingfmemberii which is situatedabove the key levers and isadapted engage beneath an arm 55 which constitus a part of the ltrain of connections between the universal bar andthe escapement mechanism. Thus a universal bar 56 extends'be- `rieath t-he key levers and is connected at its 70` ends to Vupwardly extending links 57 which in' turn are pivoted at their ilipperendsto :rearwardly extending crank arms.5`8 on a rock shaft 59. This rock shaft is piyoted at its ends on pivot screws 60 received 1n 75 tapped openings in the base' of the'inachine. The arm 55, hereinbefore referred tofis in the nature of a 'crank arm located centrally of .the rock -shaft 59 `andprojecting rearwardly therefrom. This crank armfis -con- 8O nected at its rear end to an upwardly extending link 61 which controls the usual dog rocker and the escapement mechanism. `It will be understood, therefore, that whenthe locking projection 54 is moved to a position 85 where it extends beneath the crank arml 55, a depression of the crank arm is prevented so that the universal bar 'will be lockedv against downward movement. This in turii locks the key levers against depression, oragai'nst 90 a'. full depression, so that the printing 1n-l strumentalitiesandA the 'escapement mechanism are rendered inoperative and thema- -chineis thus-thrown outo'f operation, as usua,l1y the case in line lock mechanism. 95

Thelockingof the machine outofioperation, in the manner described, constitutes one means ,for indicating to the operator -that the. bottom `edge of. the sheet has been reached,

as will hereinafter more clearly appean In "1( addition to this I prefer to provide afsecond vmeans for indicating to the operator that the end of the sheet has been reached. Thus the locking -lever 51 has pivoted thereto at 62 c substantially horizontally disposed link 63 14 connected at its opposite end to a crank arm 64.. This crank arm projectsfrom a rock shaft 65 which extends fore and aft of the machine, at one side thereof, vand is supported at its ends on pivot screws 66 re- 1 ceived in tapped openings in the left-hand corner posts. 2 -of'the machine. The forward end of this rock shaft has mounted g thereon a visual 'indicator which, in: the

present instance, is in the nature of a crank 1 arm 67 carrying an indicating plate or device 68 inscribed with the words End of Page, or some such warning inscription.` -In thev normal positions of the .parts this indicator 68 is maintained/out of view of 1 ,the operator behind'the forwarddeft-hand corner post 2 ofthe machine, as indicated in dotted lines in Fig. 2. When, however, the end of a page is reached, the parts 'are-automatically actuated to effecta movement 'of 1 the indicator 68 'from the position shown in Fig. 2 to that indicated in Fig. 3 where said indicator is exposed to the view 'of the operator, and the operator ithus warned that .the end of the Apage has been reached.,l

jillie finger bein ciu-out or recess 27 at the lower' portionl of the platen to support af r' 28 li'n the elevated position, as' shown in lgs. 1l and 2;

'contained thespwce 27 paten and the worksheete sheet is fed forwardly to a bottom edge thereof shownl in' Fig. 4,

.tween the When" the work position where the` passes the fingerl 28, 'as

lthere will be nothing to' su port the. -nger and' thel arts controlled" t ereby, and thefinger w'itll dropby the Weight-of the part-s from the position shown in Fig. 1; to that indicated in Fig.- 4. rllhe effect of this-movement i's-'tioy tlurn the angii'lar lever 30 on its pivot 31 to* the position shown-in Fig. 4, thusbringi'r'i 'the pafwl 34s into' engagement with the rac '43. The step-by-step eed of the carriage under the control of the escapenent mechanism, and under the' power apf the usnal` spring drum', not

plied' thereto by shown', is 4e'fecti've to carry' the vpearl '34 along with the carriage. 'Thelp'aw 34, at this time, being engaged with the rack is efectivo' to move t ing the sprn 48. Th ongitudinal motion of the rack .gis transmeizited to the locking' leveiL 51 to swing it from the position. shown 68 to move said indicating device from -the hidden position behind the corner post, as represented in Fig. 2, to the exposed position shown in Fig. 3. The second indicator G8 thus warns the operator that Othe machine is locked against further actuation and notil 'fies the operato'r that the locking has been effected because the end of the sheet has been reached. The operator should then lift the jl'mkj37 b v means of the finger piece 39, and effect an engagement between the hook-like projection 40 and the pin 41, thus moving the angular lever 30 to the releasing position and locking it in suoli position as shown in Fig. 1. This movement of the finger .piece 39 and the parts controlled thereby to the Fig. 1 position is effective to maintain the:

finger 28 in the recess 27 until a new sheet is introduced into the machine. Then'the finger piece may be moved rearwardly, disengaging the projection 40 from the pin 41` and thereby enabling the parts to be automatioally actuated when the end of the portione latter with `the carriage in the l direction of the arrow in Fig. 2, thus stretchlever ocking the key levers iiewiy introduced sheet passes the finger 28, as hereinbeforel explained.

'If the pla-ten should be in thelower case 'position when the sheet controlled member 28--30--34 is released, then the pawl 34 viii 70 be moved into engagement- With the lower series of teeth 45 of the rack 43. If, on the other hand, the platen is in the upper case position and the sheet controlled device is released, then the pawl 34 will be engaged? 75 with the upper series of ratchet teeth 44 on the rack barf In either instance the ,pawl Will'engage the rack bar to move it duri-ng the travel of the carriage to bring about. an automatic locking of the machine out of op' eration anda display of the visual indio catdr, as shown in Fig. 3. The construction is such that when the paw] 34 is engaged with the rack 43 the stop '33 will prevent such pawl from turning on its ivot during thc movement of the carriage rom rightI to left, therebyr compelling the rack to move with the carriage. However, a movement of the carriage from left to right at this-time would merely result in the pawl snapping over the engaged'ratchet teeth on the rack bar without affecting said bar. When the awl 34 is disengaged from the rack, as here nbefore described, the spring 48 is ccctiv-e to move the rack to the right or back to noi-'l 95 mal position, thus effecting ay corresponding movementof the lever 51 to withdraw the lockingA member 54 from beneath the crank arm 55,'thereby releasing the machine. This same movement of the locking lever is .elfi 10C feet-ive to turn the rock shaft (35 and efi'ect a movement of the visual indicator from the osition shown in Fig. 3 to that indicated in ig. 1, where it is no longer exposed to the view of the o erator. 10

From the oregoing description it will lic understood that thc finger 28, lever 30, pau'l 34, and rack 43 constitute means cont-rolled by the Work sheet in thc machine for rendering the locking mcans, includng'thc parts no 51-54-55, operative at any pointl in' the travel of the carriage and that after the locking means are rendered operative :the travel of the carriage efi'ccfs a locking operation of the parts. In other words, the -arrangement of the rack 43 longitudinally of the carriage in the manner described :cnables the paw] 34, which is held out of enagement b v the work sheet. to he' brought into cooperation with the rack at any point 13g in the travel of the carriage, so that when said pawl and rack are brought into cop- `eration .a movement ofthe carriage is effective to lock the machine outof operation loperation and displaying the visual indicator'when any. predetermined point of a work sheet is reached as well as when the may be 4madefto release the dummy sheet, therefore, .finger 28, and the parts connected therewith,

bottom. edge of the work sheet is reached.

".lhe'locking of the parts, when any predetermined point of the work sheet is reached, is etl'ected'hy maintaining the left-hand edge of the work sheet (3) -to the left of the recess 27 in the platen, and by employing a dummy sheet to cover the recess land support the finger 28 ofthe sheetcontrolled device.. The acts-tp control the instead 'of the work sheet. .By adjusting the bottom edge of the dummy sheet with reference to the work sheet G9, thev dummy sheet finger 28 .when

vany predetermined point on the work sheet reaches the printing line.

Thus,4 for instance, if the parts are Ito be locked after one-half of the work sheet is fed through the 'l' machine, then the lower or bottom edge @of "fthe dummy sheet will be positioned with reference to the ,work sheetsoas to release the finger 28 when one-'half ofthe Work sheet is.. t 1 fed lforward. `Corresponding' relative' ad- .justments between the dummy Asheet and """H Ployed without others.'

work sheetare eii'ective' to lock the machine and maintained inoperative. h

' Various changes maybe-made without departing from the. spirit and scope of my invention and it should be understood that certain features of my invention may be em- For instance, the

visual indicator may 'be employed. with or without the .loclting construction and the locking constructioninay be employed with or With'outthe visual indicator. I prefer,

however, to embody both indicators or features in a single coustruction'in order to avoid confusion and to warn the operator lthat. the machine is locked out of operation,

for the reason that the end of a page has been reached.

'i That I claim as new and desire to secure by Letters' Patent, is:-

l. In a typewriting machine, the combination of a carriage, printing instrumentali-y land means controlled by a sheet in the maverative at 'any point' in the travel of the I carriage.

ties, means for locking said printing instru- 'inentalities against printing operations. said'v locking means being actuated b v the travel ofthe carriage'in the direction of its feed,

chine for rendering said locking means op- 'in the machine for. .rendering'sai the combination of typewriti'ng machine, the combien nation of a carriage, printing instrumentali- 4ties, means forlocking.4 said printing instrumentalties against printing' operations, said lckingmeans beingv actuated by the travel of the carriage, means controlled b a sheet lookin means operative at any point inthe travel o the carriage, and. ari vautomaticallfy- 'actuated fvisual indicatorwhichfs exposed to'theoperator.,` Whenfjthe printing* instrumentalities 751 are locked against. operation. In' a typewriting machine, .the 'combi-` nationof acarr'iage, a platen carried thereby', a visual indicator normally liiddenfrom the view of ythe operator, and .aiitomatically' go actuated means for. actuating said visual' indicatorv and exposing it to the vi evv="of` the operator after Aa pre e l work sheet has been reached, saidaiitomatically actuated means being operated by the 85 4travel of the"carriage controlledV byv the worksheet.' Y' A v .4.. In' af :front 'strike t-ypewriting machine, a carriage, a vertically shiftable platen, .printinginstrumentalities, 90

means 'for lockingsai'd printing instrumentalitiesVv againstprinting operations, andl means controlled by -a sheet in the machine for rendering said lockingmeans operative whethert-he platen be in the normal o r in the 95 shifted position 5.- In a typewriting machine, the combina'- tion of a carriageg'ameans controlled vby a sheet iny the v'machinel for throwingthe machine out ofioperation, said meansy comprising a device heldin one position by'a sheet in the machine and released from si'ich positioin'at a predetermined pointin the feed of .the sheet; a visual indicator; and means for automatically moving said visual indicator 10 to expose it to the view of the operator when the machine 1s thrown out of operation.

G. In a typewriting machine, the combination of 'a carriage; printing lnstrumentalities; and automatically operating means for 11 locking .the printing .inst-riiiiientalities out ot'printing operation whenvan end of a. work sheet 'is reached, said means comprising a paw'l carried, by the carriage, a coperative rack carried'by and movable'on'the .frame of 1] the machine, said rack extending longitudinally in the direction ofthe travel of the carriage and with which said pawl is adapted to coperate at. any'point in the travel of the .cari-lage, saidrack being movable with the pawl and carriage in theldirectionof vthe ,feed of the latter, a locking device controlled bv said rack, and

means controlled by the, work sheet for maintaining the pawl disengaged tromthe rack and for` affording an i engagement between the pawl and rack when .an end` of the 'work sheet is reached,

7. In .21.i'ont strike typewriting machine, A

thecombination of. al carriage,a vertically shiftablefplaten land pla-ten franie `a pawl 1 termmed' point'on the ...carried by said platen' ?frlame,`a"rafckl carried 'by' the` frame of the; machine :aiidmqvable' thereon andiwith which' sa'iclfp'iiv'l is adapted platen, means controlled by ,tliefwrl't' sheet for holding the paw'lfout of engagement with the rack and, for affording anl engagement of the pawl'vvith the rack when an end of the vsheet is reached, a universal bar, and means controlled by said rack for locking said universalvbar against actuation.A

8. In a typewritlng machine, the-combination of a carriage,A a platen and platenframe carried thereby and mounted for case shifting movement, a pawl carried by said platen frame, a rack carried by and movable on the frame ofthe machlne in the general direc- Ition of the travel of the carriage, said rack lextending longitudinally in the direction of the travel of the carriage and with which said pawl is adapted to coperate at any point in thetravel of the carria e and irre- :spective ofthe caSeposition o the platen,

.means .controlled a work sheet for nor- 'mally maintaining the pawl disengaged from the rack and for afford-lng an engagement of .the Eawl vvlth` the rackwhen anend of the wor sheetis reached, `a nmversal bar, and

means controlled by a movement of said rack in the, direction of the feed of the carriage for locking the universal' bar; against actuation.

.l 9. In a front-striketypevvriting machine,

the combination of 'a carriage, a vertically shiftable platen, printing instrumentalities,

means for. lockingsaid printing instrumentalities against rinting operations, means controlled b a s eet in the machine for rendering-said ocking means operative whether the platen be in the normal `or inthe shifted position, a visual indicator, and,means for automatically exposing said visual indicator to the view of the operator when the printinstrumentalities are locked against printing operations.

10. In a typewritlng machine, the cornbination of a carria e; printing instrumentalities; automatical y operating means fol" locking the printing instrumentalities against printing operatlons whenl an end of a work sheet is reached,said meanscomprising a pawl, a coperative rack, means controlled by the work sheet for maintaining said pawl and rack members disengaged and foraifording an engagement Abetween them when an end of the work sheet is reached, and a locking device controlled by said pawl and rack;'-arvisual indicator; and automatically f operating means for exposing said visual indicator to the` view of t-he operatorrwhen the printing instrumentalities are locked against printing operations.

11. In a typewritingn'iaclnne,the.eomb1 nation-of a carriage; printinginstrnmentalities; automatically operating means for lockoperator when the machine is locked out of `the travel o the carriage and irrespective o ing the printing instrximentalities against printing operations 'when an end oa .work sli'et is' reached, said.means comprising a pagvl, a coperative rack, one of said'pawl and rack members being carried 'by thel carriage and the other of said members bein carried by the frame of the machine an the' 4said members being adapted to be brought.intofcoperation at any point in' the.

travel of 'the cariage,"means controlldby 75 Ethe work sheet for maintaining saidpawl and rack members disengaged and for'affordin an engagement between them "vvhen an en of t'hework sheet is reached, and a" locking device controlled by said pawl and rack; and a visual indicator controlled by said rack. I l;

1 2. In a typewriting machine,`the combination of a carriage; automatically operati.V ing means for locking vthe machine out of 'operation when an end of a work sheet 'is reached, said means comprising a'pawl carf i' ried by the carriage, a eoperative rack carrled byand movable-ony thel'frame of the machine, a locking device controlled by Said rack, and means controlled by the work she'et for miiintaining the pawl disengaged from the rack 'and for affording an engagement between the pawl and rack when the end of the work sheet is reached; a visual indicator normally hidden from the View of the operator; and means controlled by said rack for moving'the indicator into the view of the operation. 100

13. In a front strike typewriting machine, the combination of a carriage, a vertically shiftable platenand platen frame', a pawl carried by said platen frame, a rack carried bythe frame of the machine and 106 movable thereon and with which said pawl isada ted to engage in either case position o the. laten, meanscontrolled by the work sheet or holding thepawl out of engagement with the rack and for affording 110 zin-engagement ofthe pawl with the rac when an end of the sheet is reached, a unithe case position of the platen, means controlled .by a work .sheet for normally:

-inaintaining the pawl disengaged from the rack and for affording an engagement of the pawl vvith the rackvvhen an end of the work sheet 'is reached, a universal bar, means controlled by said rack for locking the uni- -versal bar against actuation, a visual indi-v cator normally hidden from the view of the operator, aiid means controlled by said rack for moving thevisual indicator into'the view of the operator when the universal bar isA locked against actuation.

15.In a typewriting machine,l the combi-` nation of a carriage, a pawl carried thereby, a rack carried by and movable on the frame of the machine and with which saidpawl is adapted to"cop`e`rate at any point in the travel of the carriage, a locking lever controlled by said rack and having an engagingr device thereon, a universal bar, a second engaging device operatively connected with the universal bar and with which the engagto co`act to lockthe'universal bar againstI actuation, means controlled by the -Work operating meansl comprising an engaginging device on the'locking lever is adapted sheet for normally maintaining the pa-Wl disengaged from said rack and for aifording an engagement of the pavvl with theV rack When aii end of the `Work sheet is reached,

and a visual indicator controlled by said;

locking lever. A '16; Inja typevvriting machine, vthe combination of a carriage, a platen -carried thereby, a visual indicator normally hidden from the 'view of the operator, and automatically operating means controlled by the --work sheet for exposing said visual indicator to the view of the operator when an end of the Work sheet is reached, said automatically device carried by the carriage, a oo perative engaging device carried' bythe frameof the;

machine and with which said visual indicator is operatively connected, and ineans controlledby the work sheet for normally maintaining said engagingdevice disengaged-and foraiordin'g an engagement between said devices when an. end f the work A'sheet is reached;

" .17."111 a'typewriting uiacl'iine,'tl ie combi-l nation of a carriage; a platen carried thereby; a visual indicator normally hidden from gthevieiv ottheoperator; and automatically operating' means controlled by the work sheet for exposing said visual indicatory to thev'vieiv of the 'operator when :in-end of the ivii'k sheet Ais reached, said automatically' Ioperating means comprising a pawl carried nat-ion cfa carriage; a platen carried thereby; a visual 'indicator normally hidden from'` the view ofthe operator; and automatically operating means controlled by the 'Work .sheet for-,exposing said visual indicatorV to theview of the operator when an end oflthe .Work sheet is reached, said automatically operating means comprising a pavvl carried by the carriage, a cooperative rack carried by and movable on the frame' of the machine,

saidV rack extending longitudinally in the direction of the travel of the carriage and therack when an end of, the Work sheet is.

`19. In a typewriting machine, the combination. of -a carriage, printinginstrumentalities, means for locking said printing instrumentalities against printing operations, means controlled Vby Va slieet inthe machine forfre'nlering said Vlocking means operative at anypoint in the travel of the carriage, and hand'A actuated means operable at will to render-'said locking means and `sheet` con trolled.means inoperative.

20. I'n a typewriting machine, the. combination of acarriage, printing instrumentalities', meansfor locking said printing instrumentalities against printing operations,

`said locking means being actuated by the travel of the carriage,` means controlled by a sheet'in the machine for-rendering said locking means-operative'at any point in the travel of the carriage, an automatically actuated visual indicator which is exposed to the operator when the printing instrumentalities'are locked Aagainst operation, and hand actuated means operable at will to render andl maintain saidflocking means, sheet controlling meansy and visual indicator inoperative.

21. Tn a type'vvriting'machine, the combination of a carriage, a platen carried thereby, va visual indicator normally hidden from the viewof the operator, automatically operating-'means for actuating said visual indicator and' for exposing it to the view of the operator after a predetermined point on 'the work sheet has been reached, and hand actuated 4means operable at will to render. said automatically operating means inoperative.'

22. In a typewriting machine, the combination of a carriage, a pawl carried thereby, a rack carried by and movable on the frame of the machine and with which said pawl is adapted to coperate at any point in the -travel ofthe carriage, a locking lever cfm- 4trolled by said rack and having an engaging ,1 device thereon, a universal bar, a second engaging device operatively connected with the universal bar and with which the engaging device on the locking lever is adapted' 'tomo-act. to lock the universal bar against actuation, means controlled by the work Asheet for normally maintaining the pawl dis-,

engaged from said rack and for affording an engagement of the pawl with the rack when an end of the worksheet is reached, a visual indicator controlled by said locking lever,

, and hand controlled locking means operable at will to lock said work. sheet controlled means outof operation.

23. In a front-Strike typewriting machine, the combination of a carriage, al platen car- A ried thereby, printing instrumentalities means operative at .any point in the'travel which are adapted to strike against the front y face of the platen, means -for locking said printing instrumentalities against printing movement, and means controlledby a sheet in the machine for rendering said'locking of the carriage, said sheet controlled means coperating with the sheet forward 'of a vertical transverse plane extending through the axis of the platen.

24. In a typewriting machine, the combinationof a carriage; a printingkey; and

means controlled by a sheetin the machine for locking 'the printing key against operation, said means comprisinga device held yin one position by a sheet'in the machine and released from such position at a predetermined point in the feed of the sheet, and

means adapted to be engaged by said device when released irrespective -of the position of the carriage in its line of travel and to be actuated and lock the vprinting key bya movement of the carriageinfthe direction.

and rack members disengaged and for affording an 'engagement between them when an end ofthe work sheet is reached, and a locking device controlled by said pawl and rack to effect a locking operation by a' movement of the carriage in the direction of its feed.

26. .In a typewriting machine, the combination of a carriage; printing instrumental1 "t1es; and automatically operating means for. locking the printing 'instru!neiii'alities, I

against printing operation `wihenfan end pf a work sheet is reached, said means-compris- .ing a pawl, a coperative rack, one of saidv pawl and rack members being carried 'by the i carriage and the.l other ofsaid members being Carri-ed' by the frame ofthe machine, said members being adapted to be brought' into coperation at anyA pointin thetra'vel' of the carriage, means controlled byl the?? work sheet for maintaining'said pawl andx'f rack members'disengaged and for at'fcrdin an engagement between them when, an en ofjthe work sheet is reached, and a locking device controlled by said pawl ,and rack and actuated thereby during. a movementof the carriage-in the direct-ion of its feed.

nation of a carriage; andautomaticallyop- 27. In a typewriting machine, the combi-f l eratingmeans for locking the machineoit of operation when an end of alworlrsheet is reached, said means comprising'al awl Vcarried by the. carria e, a rack carrie by andmovableonthe rame of the machine; andi-.with which the pawl i'sfadapteditoc' 'operategatl an point in thegtrave'l of "the carriage, a loc ngdevice controlled by said rack and actuated thereby duringthe travel vof the carriage in the direction of its feed,l

and means, controlled by the 'work sheet for maintainn the pawl disengaged from the rack and or affording an engagement bef tween the pawl and rack whenl an end oli 'A thework sheet is reached. Y

28. In-a typewritingmachine, the combi-v by, a feed rack carriedby and movable'on the frame of the machineva'nd with which said pawl is adapted to coperateat any point in the travel of the carriage, a locking lever controlled by said. rack and hav-V ing en engaging device thereon, a universal 4bar, a second engaging device operatively connected with the universal vbar and witi nation .ofa carriage, a pawl carried theref' which the engaging device on theA locking lever is adapted to co-act during a movement :of the carriage in the direction'ofits'feed to lock the universal bar against actu tion,"I and means controlled by a work she t' for normally maintaining the pawl disengaged from said rack and for affording an engagement of the pawl with the rack when an e'nd of the work sheet is reached.

Signed at the borough ofManhattan, city of New York, in the county of New York,

March, "A. D. 1911.

Witnesses CHARLES E. ASisrrirr, E. M. WELLS.

g WALTER J. Bannon;

and State of New York, this 24th day of

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