US1016043A - Type-writing machine. - Google Patents

Description

H. H. STEELE. TYPE WRITING MACHINE. APPLICATION FILED NOV. 2,1911.

Patented Jan. 30, 1912.

2 SHEETS-SHEET 1.

WITNESS-E5:

INVENTEIRL HIEATTURNEY H. H. STEELE.

TYPE WRITING MACHINE. APPLICATION FILED NOV.2,1911.

1,016,043. Patented Jan. 30, 1912.

2 SHEETS-SHEET 2.

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HISATTEIRNEY UNITED STATES PATENT OFFICE.

HERBERT H. STEELE, OE MARCELLUS, NEW YORK, ASSIGNOR TOTHE MONABCH TYPE- WRITERiCOMPANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed November 2, 1911.

Patented Jan. 30, 1912.

Serial No. 658,139.

To all whom it may concern:

Be it known that I, HERBERT H. STEELE, a citizen of the United States, and resident of Marcellus, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in TypelVriting Machines, of which the following is a specification.

My present invention relates to carriage feeding mechanism for typewriting machines. and its general object is, to provide new and improved mechanism of the character specified.

More specifically my invention is con cerned with and has for its object the provision of novel means for affording an advance movement or spacing of thecarriage a distance greater than a single letter space distance, said means, which for convenience may be termed double letter spacing mechanism, coming into play automatically at predetermined points in the travel of the carriage. I the present instance the doublc spacing mechanism is operatively set by tabulating mechanism.

To the above and other ends my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the accompanying drawings which illustrate one form of my invention, Figure 1 is a fragmentar central sectional view of a Monarch frontstrike typewriting machine embodying my.

invention. Fig. 2 isa vertical sectional view taken on planes represented by the broken dotted line :vw in Fig. 1 and looking in the direction of the arrows at said me. corresponding with Fig. 2 but omitting some parts shown therein and showing other parts broken away and in different relationships. Fig. 5 is a fragmentary side view of the escapement mechanism partly in section and corresponding to the operated position of the parts shown in Fig. 4. Fig. 6 is a vertical sectional view taken on a plane represented by the dotted line y-y in Fig. 1 and looking in the direction of the arrows at said line. Fig. 7 is a top plan view of the head of the dog carrier or rocker. Figs. 8 and 9 are perspective views cl the (log members of the carriage feeding vertical front to rear- Figs. 3 and 4 are operating views mechanism. Fig. 10 is a rear view of a modification.

I have shown my invention as applied to the Monarch typewriting machine but it is to be understood that it may be adapted to various other styles of writing machines.

-The mainframe of the- Monarch type- Writin machine as illustrated in Fig. 1 comprises a top plate 1 supporting curved standards 2 to which are secured stationary grooved guide rails 3 cooperating through anti-friction rollers 4 with the rear bar 5 of a platen carriage or carrier which further comprises end bars 6 extending forward from the slide bar and providing a support for a platen 7. The carriage is adapted to be drawn leftward by a spring drum 8 connected by a strap 9 to the carriage, and the step-by-step or letter feed movements of the carriage leftward under the pull of the carriage power or spring drum is controlled by means comprising a feed rack 10 supported by arms 11 pivoted to the end bars of the carriage, said rack being normallymaintained in springpressed engagement with a feed pinion 12 fixed on the forward end of a shaft 13 journaled in a cylindrical bearing 14 cast integral with a bracket or arm 14 secured to and rising from the top plate. Loosely mounted on the shaft 13 at its rear end portion is an escapementp wheel or circular toothed rack 15 provided with teeth 16 and behind said escapement wheel is a cylindrical housing 17 fixed to the shaft and covering or containing the usual pawl and ratchet connection between the escapement wheel and shaft, said connection causing the feed pinion 12 and es'capement wheel 15 to turn together during letter space movements butpermitting turning movements of said feed pinion in return direction inde-' pendent of said escapement wheel. Depending from the top plate is a bracket 18 on which is pivoted a dog rocker or carrier comprising an axle portion 19 from which rises an arm 20, the dog rocker further comprising an arm-21 extending forward from the axle portion 19, said arm21 being connected by a link 22 with the key controlled universal bar (not shown) common to the machine. The dog rocker is provided with a restoring spring 23 which normally main- I tains it in the position shown in Fig. 1, this position being determined by the engagement of an adjustable screw stop 24 carried by the arm 21 with the under face of the bracket 18. The forward motion of the dog rocker under the operation of the printing keys acting through the link 22 is limited by an adjustable screw stop 25 which is adapted to cooperate with the rear face of the bracket 18, as shown in Fig. 5.

As in my prior application Sr. No. 625,957, filed May 9th, 1911, the upper portion of the rocker arm 20 terminates in an enlarged head 26 which is formed (as shown in F ig; 7) with two horizontal guide slots 27 and 28, providing seats for a pair of slidable dog members 29 and 30, best shown in Figs. 8 and 9. Said members are provided respectively with upwardly extending teeth 31 and 32 constituting the feed dogs which co6perate with the teeth 16 of the escapement wheel or toothed rack 15. These slidable dog members 29 and 30 are similar in construction to the corresponding parts illustrated in my prior application aforesaid but the forward dog member 29 is longer than in the prior construction and is provided with a second dog or tooth 33 to the right of the tooth 31, the purpose of said additional tooth appearing hereinafter. The members 29 and 30 are provided at their rear vertical faces with grooves 34 which receive pins or screws 35, the construction serving to retain the dog members in their guide slots 27 and 28 and guide said members therein. The dog member 29 is provided with a depending stop lug or finger 36 at its right-hand end and a lug or finger 37 at its lefthand end, the lug 37 carrying a guide pin 38 for a coiled restoring spring 39 which is seated in a depression 40 in the head 26 and abuts the inner face of the lug 37 (Fig. 3). Said lug 37 further constitutes a stop in cooperation with the inner or stop face of a vertical slot 41 extending downward from the right-hand end of the slot 27. the lug 37 being adapted to play in said slot 41 during stepping movements of the dog member 29.

The escapement herein illustrated is convertible for obtaining either ordinary or reverse feeds and therefore the rear dog member 30 is similarly provided with depending stop portions or lugs 42 and 43 and a restoring spring 44 partly surrounding a guide pin 45 on the lug 43. However, for the purposes of my present'invention the escapement devices are set for giving an ordinary feed; that is, a feed which causes carriage letter space movements during return strokes of the printing keys, and for this purpose the dog member 30 is held rigid on the dog carrier by a settable shifting device or'arm 46 which, as in my prior con struction, is pivotally supported as at 47 on. the left-hand face of the rocker arm 20 and I is provided with a lateral ofl-set or finger 48.

The shifting arm 46 may be held rigid on the dog rocker by a screw 49 which engages in a slot 49 (Fig. 3) in the arm 46. In the present instance the arm 46 is shown set in its rear position with the finger 48 coiiperating with the lug 43 to maintain the rear dog member 30 set as in Fig. 2, said dog member 30 with its tooth 32 constituting a hold ing dog, the forward dog member 29 being yieldable and constituting the stepping or feed dog. The convertible feature of the present construction is explained at greater length and is claimed in my prior application aforesaid.

In the present instance I provide stop devices which coiiperate with the stepping dog member 29 so that when a printing key is depressed and the dog rocker is swung forward, the member 29 may be advanced or stepped leftward by its spring 39 a distance corresponding toa single letter space and then arrested, or may be advanced a distance corresponding to two letter spaces before be ing arrested so that thereafter during the return movement of the dog rocker the carriage may advance a distance equal to two letter spaces. The stop devices aforesaid coiiperate with the stop device or lug 36 on the member 29 and comprise a stop member in the form of an angular arm 50 (Figs. lto 5) which is pivotally mounted at the right-hand face of the rocker arm 20 (or as viewed from the rear the left-hand face) on a headed shoulder screw 51. The member 50'extends upward from its pivot and is formed with a guide slot 52 which is engaged by a screw 53 and maintained thereby close to the face of the rocker arm 20. Normally the arm 50 is maintained forward with the rear end of the slot 52 against the screw 53, as shown in Fig. 1, by a wire spring 54 which engages the arm 50 and re-acts against a pin 55 on the rocker arm 20. At its upper end the arm 50 is provided with a lateral extension or stop proper 56, the end of which is adapted to cooperate with the stop lug 36 to limit the feed or stepping movement of the dog member 29 to a single letter space distance. The arm 50 is also provided with a forwardly projecting extension 57 which cooperates with automatically settable devices for swinging the stop arm 50 rearward to the Fig. 5 position, thereby rendering the stop 56 inoperative and permitting the dog member 29 to be forced leftward by its spring 39 double the ordinary distance.

The automatically settable devices afore said comprise a lever 58 (Figs. 1, 2 and 6) fulcrumed on the reduced portion 14 of the cylindrical bearing 14 and is confined by a spring clip 59 against a shoulder 14 formed on the cylindrical bearing 14 by said reduced portion 14 Said spring clip 59 is semi-circular in form and has inwardly turned ends engaging in depressions in the 'portion la The lower arm of the lever or device 58 is provided with a lateral off-set terminating in a rearwardly projecting stop 60. Pivoted to the upper arm of the lever 58 is a spring trip or small secondary lever 61, the lower arm whereof is normally maintained against a stop pin 62 by a wire spring 62 on the lever 58, thus normally maintaining the upper arm of the spring trip 61 in the position shown in Figs. 1 and 2 where it may be acted on by the tabulator mechanism, as hereinafter explained, to throw or swing the lever 58 to the abnormal position (Fig. 6) and bring the stop 60 into the path of the extension 57. The swinging movements of the lever 58 are limited by stop pins 63 and 6 1 projecting rearward from the bracket 18 in position to cooperate with the lower arm of the lever 58. Normally the lever is maintained in contact with the stop 63 by a coiled spring 65.

The tabulating mechanism herein shown is or may be of the usual style provided with the Monarch machine for doing denominational tabulating work. Said mechanism comprises a toothed column stop bar 66 supported on arms 67 extending rearward from the carriage (Fig. 1) and carrying adjustable column stops 6.8 which difler from the ordinary column stops only in being provided with downward extensions or lugs 68*. Cooperative with these column stops are denominational stops 69 projecting forward from the top of denominational stop levers 70 fulcrumed at 71 on a frame 72 detachably secured to the main frame of the machine, said stop levers being controlled by denominational keys and connections (not herein shown) but which may be of the usual or any other suitable construction. The tabulating mechanism further comprises releasing devices which are omitted from the drawings but which operate when any denominational lever 70 is actuated. to lift the rack 10 from the pinion 12 and release the'carriage so that it may run freely leftward under the pull of the main spring until arrested by the engagement of the proximate column stop with the projected denominational stop.

In doing, tabulating work and particularly in printing columns of numerals involving dollars and cents, the usual single space division between the dollars and cents has been found objectionable even when a decimal point or period is used; and accordingly in the blank forms of freight bills, way bills, bank deposit slips and many .other forms of printed blanks, the division between the dollars and the cents column is a ruled vertical line and a double spacing is employed to separate by a blank letterspace the-unit figure in the dollars column from the first figure in the cents column. lleretofore it has required a depression of the space bar and a corresponding consumption of time in order to obtain this double spacing at the decimal position. The present exemplificat-ion of my invention affords means for automatically spacing the carriage two letter spaces when the decimal position in any column is reached. This improved result is obtained through the column stops 68, the lugs 68 whereof are adapted to engage with the trip 61 and therethrough to operatively set the lever 58. The trip or actuating device 61 is constructed and adjusted so as to bear the particular relationship with the set of denominational stops 69 shown in Fig. 2 which, it will be borne in mind, is a rear View, From this figure it will be observed that the left-hand or operating face of the trip is in line with the third denominational stop from the right; or the third from the left, as viewed from the front of the machine, he third stop being the tens stop. It will be understood that when a column stop is in position to cooperate with the tens denominational stop, that is, when the carriage is in position for writing in the tens location in any particular column, said column stop 68 will also be at the beginning of its en.- gagement with the trip 61, as indicated by the dotted line position of the column stop 68 in said Fig. 2.

As has been stated, the carriage feeding or escapement devices when set with the rear dog member 30 rigid on the dog rocker will operate to give the ordinary escapement, that is, will operate to space the car riage on the return movement of the printing key. Normally the dog 31 is engaged with one of the teeth 16 of the escapementwheel as illustrated in Figs. 1 and 2; and at this time the main spring, acting through the engaged tooth 16, will overcome the spring. 39 and will maintain the lug 37 engaged withthe inner stop face of the slot 41.. When one of the printing keys is depressed and the dog rocker arm 20 swung forward, disengaging the dog 31 from the operative tooth of the escapement wheel and bringing the dog 32 into engagement therewith, the spring 39 will act on the dog member 29 to slide it rightward, as viewed from the rearyuntil it is arrested by the engagement of the lug 36 with the stop 56, as shown in Fig. 3. From this figure it will be observed that the dog 31 has been brought into the space behind the engaged escapement wheel tooth 16 and into the path of the first advancing tooth so that on the return movement of the rocker this next advancing toot-h will engage with the dog 31 and force it back to the Fig. 2 position, thereby causing the carriage to advance or escape a single letter space distance in the printing direction. Assuming'the carriage to be in such position that the tabulator stop bar 66 is in the Fig. 2 position with the column stop 68 atthe left, viewed from the rear, of the set of denominational stops 69 as shown in full lines and that one of the denominational keys, say, the thousands key, is operated, projecting the thousands stop, (that is, the 5th stop from the right in-Fig. 2) and re leasing the carriage, then the carriage will run freely until arrested by the engagementof the column stop 68'with the projected stop 69. Thereupon the operator proceeds to write the figures in the column, beginning with the figure in the thousands position, and the carriage will space a, single letter space at a time during the writing of the thousands and hundreds figures, which will bring the column stop 68 into the dot-ted line position of Fig. 2 which shows the lug 68 on said column stop in engagement with the spring trip 61. The result will be that following the printing of the tens figure the carriage will advance a single letter space distance and the lug 68 will act on the trip 61 to swing the lever 58 to the Fig. 6 position, thereby throwing or setting the stop 60 into the path of the extension 57 The con.- sequence will be that thereafter when the units figure is printed the dog rocker will swing forward, causing the extension 57 to strikethe stop 60, thus swinging the stop arm 50 rearward and carrying the stop 56 rearward out of the path of the lug 36, as shown in Figs. 4- and 5. The stop 56 having been thus withdrawn, the dog member 29 will be forced by its spring rightward, when viewed from the rear as in Fig. 4;, until said dog member 29 is arrested by the engagement of the finger 36 with the left-hand face of the head 26 of the dog rocker, said face constituting a stop co-active with the stop lug 36 when the normally operating coactivc stop 56 is shifted. The parts are so proportioned that this abnormal sliding movement of the member 29 will move the dog 33 behind the engaged escapement wheel tooth 16 and into the path of the next ad.'

vancing tooth 16, While the dog 31 will be moved behind said nextadvancing tooth. Consequently as the dog rocker swings back from the operated position shown in Figs. 4 and 5 to the normal position, the advancing tooth 16 will first cooperate with the dog 33, sliding the member 29 back toward normal position one step and thus bringing the dog 31 into position to cooperate with the second advancing tooth 16, which second tooth, acting against the dog 31, will complete the return movement of the member, 29 but with the result that the carriage has advanced double the ordinary letter space distance so that if new the operator aetuates a printing key the type impression will take place two spaces to the right of the units figure in the number being written. llt will be understood that this automatic double spacing of emmas the carriage may be brought about when desired at any columnar position, that is, at any predetermined point in the traveling movement of the carriage, by properly adjusting one of the special column stops 68; that during return movements of the carriage the special column steps will trip the lever 61 against its spring 62without affecting the-lever 58 or the train of mechanism controlled thereby; and also that in accordance with the principles of my inven tion, mechanism may be employed to vary or increase the amount of extra stopping or feeding movement of the escapement devices so that two or more blank spaces between imprints, instead of only one, may be provided for.

While the drawings illustrate mechanism embodying the principles of my invention they do not pretend to give exact dimensions of parts. As shown, the space between the dogs 31 and 33 corresponds substantially to the distance between two adjacent teeth 16 of the escapement wheel 15. ln carrying out my invention in practice it has been found to work very satisfactorily when the slidable dog is constructed with its teeth spaced apart somewhat less than the distance between the teeth of the escapement wheel. lln Fig. 10 is illustrated a slidable dog member 73 which is provided with dogs or teeth 74 and 75 spaced apart a distance slightly less than are the corresponding teeth 31 and 33 of the first described construction. By lessening the distance between the dogs or teeth two advantages are obtained. In the first place the liability of an advancing escapement wheel teeth 16 to strike the top of the primary dog 74 during return movements of said dog in the course of a double spacing operation and thereby blocking the parts and causing a faulty operation is greatly lessened. In the second place the margin of safety is further increased so that the top of the tooth 7 5 may be cut off as indicated at 76, thus providing a stop which is useful as a back stop for the escapement wheel, preventing accidental turning move ments of the escapement wheel during return movements of the carriage. Fig. 10 illustrates the stop device 7 6 cooperating with a tooth 16 of the escapement wheel to perform the back stopping function. As is well understood, when the return movement of the carriage is started the pull of the main spring is withdrawn from the escapement wheel, and the spring 77 of the stepping dog, which tends constantly to slide the stepping dog in the direction of the arrow 6, will act through the engaged tooth 74 to turn the escapement wheel in the direction of the arrow a; but after the escape- 1118116 wheel has turned to a very slight extent it will'be arrested by the engagement of the tooth 16 forward of the engaged wheel tooth with the stop face 76 as shown in Fig. 10. Thus at the end of the carriage return movement the same tooth 16 will be engaged with the dog 74 as was engaged therewith prior to the beginning of the return movement. Furthermore, it will be observed that my present invention provides carriage feeding mechanism in which a stepping dog is combined with means for varying automatically the extent of stepping movement ofsaid dog; that in the present instance said stepping dog is normally engaged with a circular toothed rack or wheel and may be disengaged therefrom to bring the holding dog into-engagement; that means are provided which operate automatically during this disengaging movement to afford variation in its extent of feed; that said means are brought into use at predetermined points in the travel of the carriage; that said means comprise stop devices; that said stop devices may be varied, one stop being withdrawn to bring another stop into use; that said stop devices are thus varied by mechanism which comprises a lever 58; that said lever is automatically set: that in the present instance the automatic setting is caused by tabulating mechanism or more specifically by a column stop on the traveling carriage of the machine'fthat the stepping dog is provided with a back stop for the escapement wheel: that said back stop is the top face of one of the teeth of said dog; that the stepping dog is normallyset for single letter space movements; that devices are provided for affording double letter space movements of said dog; that such devices are controlled by means which in the present instance are set by tabulating mechanism and that said means after being thus set are brought into use by the movement of the Iclog carrier under the control of the printin eys.

Various other changes may be made without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent, is

1. In carriage feeding mechanism for typewriting machines,the combination of a stepping dog, and means for varying automatically the extent of stepping movement of said dog.

2. In carriage feeding mechanism for typewriting machines, the combination of a toothed rack, a stepping dog, a holding dog, and means operating automatically to vary the extent of stepping movement of said stepping dog. g

3. In carriage feeding mechanism for typewriting machines, the combination of a stepping dog, stop devices cooperative therewith, and automatic means for varying said stop devices to vary the extent of stepping movement of said dog.

4. In carriage feeding mechanism for typewriting machines, the combination of a rack, a holding dog, a stepping dog provided with. a plurality of teeth, one of said teeth normally cooperating with said rack during letter spacing'movements, and means operating automatically to cause another of the teeth of said dog to cooperate with said rack. i

5. In carriage feeding mechanism for typewriting machines, the combination of arack, a holding dog, a stepping dog provided with a plurality of teeth, one of said teeth normally cooperating with said rack during letter spacing movements, and means operating automatically at a predetermined point in the travel of the carriage to cause a secondl'xtooth of said dog to cooperate with said rac 6. In carriage feeding mechanism for typewriting machines, the combination of a rack, a holding dog, a stepping dog provided with a plurality of teeth, one of said teeth normally cooperating with said rack during letter spacing movements, stop devices cooperative with said stepping dog, and automatic means for varying said stop devices to cause another of the teeth of said dog to cooperate with said rack to afford variation in 'the extent of letter space feeding movement of the carriage.

7. In carriage feedmg mechanism for typewriting machines, the combination of a rack, a holding dog, a stepping dog provided with a plurality of teeth, one of said teeth normally cooperating with. said rack during letter spacing movements, stop devices cooperative with said stepping dog, i

and automatic means for varying sa1d stop devices to cause another of the teeth of said dog to cooperate with said rack to afl'ord variation in the extent ofletter space feeding movement of the carriage, said means coming into play-at predetermined points in the travel of the carriage.

8. In carriage feeding mechanism for typewriting machines, the combination of a toothed rack, a holding dog, a stepping dog provided with two teeth, one only of which.

normally cooperates with saidlrack during letter space feeding movements, two stops for said stepping dog, one normally operatively' set and the other inoperat ve, and means operating automatically to move the operative stop out of the path of said stepping dog to bring the second'stop into use and permit cooperation of the second and normally inoperative tooth of said ste ping dog with said toothed rack to provi e for a double letter spacing movement of the carriage. I 9. In carriage feeding mechanism for typewriting machines, the combination of a toothed rack, a stepping dog, a holding dog,-

two stops, one normallyoperativelysetand the other inoperative, said stops being cooperative with said stepping dog to variably limit its stepping movement, and means operating automatically to move the normally rack, variable stop devices for said steppingdog, and means controlled by said carriage for varying said stop devices.

12. In a typewriting machine, the combination of carriage feeding devices comprising a stepping dog, means for affording a variation in the extent of stepping move ment of said dog, and tabulating mechanism, part of said tabulating mechanism controlling said means.

13. In a typewriting machine, the combination of escapement devices comprising a stepping dog normally set for single letter spacing movements, devices for aflording double letter spacing movements of said dog, means for controlling said devices, and tabulating mechanism, part of said tabulating mechanism operatively setting said means.

14. In carriage feeding mechanism for typewriting machines, the combination of a movable key-controlled do carrier, a stepping dog thereon, a stop or said dog normally operatively positioned, normally inoperative means for Withdrawing said stop when the dog carrier is operated, and means for setting said last recited means in operative position.

15. In a typewriting machine, the combination of a key controlled .dog carrier, a dog movable thereon, a stop on said carrier normally in the path of said dog, settable means for rendering said stop inoperative when the dog carrier is actuated, and automatic devices for setting said means in operative position.

16. In a typewriting machine, the combination of a key controlled dog carrier, :1 dog movable thereon, a stop on said carrier normally in the path of said dog, settable means for rendering said stop inoperative when the dog carrier is actuated, and tabulatin mechanism, part ofsaid tabulating mechanism operating to set said means in operative positlon.

17. In a typewritingmachine, the combination of a traveling carriage, a key controlled dog carrier, a stepping dog thereon, a stop on said carrier normally in the path of said dog, settable means for rendering said stop inoperative when the dog carrier is actuated, and a device on said traveling carriage for setting said means in operative position. j

18. In a typewriting machine, the combination of a traveling carriage, a toothed rack thereon, a key controlled dog carrier, a spring pressed stepping dog on said carrier and normally engaged with said rack, a holding dog on said carrier, a stop for said stepping dogv normally in the path thereof, settable means for withdrawing said stop from operation, and a device on said carriage for setting said settable means in operative position.

19. In a typewriting machine, the combination of a traveling carriage, a toothed rack thereon, a key controlled dog carrier, a spring-pressed stepping dog on said carrier and normally engaged with said rack, a holding dog on said carrier, a stop for said stepping dog normally in the path thereof, a settable device co-active with said stop to render it inoperative, and a device on said carriage for setting said settable device in operative position.

20. In a typewriting machine, the combination of a carriage, a key controlled dog carrier, a dog movable thereon, a stop for said dog, a spring maintaining said stop in operative position, and means for overcoming said spring automatically during traveling movements of said carriage.

'21. In a typewriting machine, the combination of a traveling carriage, carriage escapement devices comprising a dog carrier, a dog movable thereon, a spring pressed stop pivoted on said dog carrier, said stop normally cooperating with said dog during carriage letter feeding movements, an abutment cooperative with said stop to swing it out of operation, said abutment being normally in inoperative position, and means on the carriage for setting said abutment in operative position.

22. In a typewriting machine, the combination of a traveling carriage, carriage escapement devices comprising a dog carrier, a dog movable thereon, a spring pressed stop pivoted on said dog carrier, said stop normally cooperating with said dog during carriage letter feeding movements, a lever pivoted on the machine frame, and a device on the traveling carriage for swinging said lever into position to throw out said stop.

23. In a typewriting machine, the combination of a traveling carriage, carriage escapement devices comprising a dog carrier. :1 dog movable thereon, a spring pressed stop pivoted on said dog carrier, said stop normally cooperating with said dog during carriage letter feeding movements, a spring pressed lever pivoted on the machine frame, and a device on said carriage operative to momentarily swing said lever into position to throw out said stop.

2-}. In a typewriting machine, the combination of a traveling carriage, carriage escapement devices comprising a dog carrier, a dog movable thereon, a spring pressed stop pivoted on said dog carrier, said stop normally cooperating with said dog during letter feeding movements, an abutment movablymounted on the machine frame and provided with a trip, and a device'on the carriage operativeat a predetermined point in the letter feeding travel of the carriage to move said abutment into position to throw out said stop, said trip rendering said abutment independent of said device during return movements of the carriage.

25. In carriage feeding mechanism for typewriting machines, the combination of a stepping dog and means operative at a predetermined point in the travel of the carriage to vary automatically the extent of.

stepping movement of said dog.

26. In carriage feeding mechanism for typewriting machines, the combination of a stepping dog, stop devices cooperative therewith, and means operating automatically at a predetermined point in the travel of the carriage to vary said stop devices to vary the extent of stepping movement of said dog.

27. In a typewriting machine, the COIIlblnation of carriage feeding devices comprising a stepping dog, means for afiording variation in the extent of stepping movement of said dog, and tabulating mechamsm,

part of said tabulatin mechanism operating at a predetermine point in the travel of the carriage to render said means operative.

28. In a typewriting machine, nation of a traveling carriage, carriage letter feeding devices comprisingv a stepping dog, means for affording a variation in the extent of stepping movement of said dog,

and a device adjustable on the carriage for bringing said means into use.

nation of carriage feeding mechanism comprising a stepping dog, devices for affording variation in the extent of stepping movement of said dog, and tabulating mechanism comprising a stop on the carriage and a cooperating stop on the frame of the machine, said carriage stop cooperating also with said devices to bring them into use.

30. In a typewriting machine, the combination of carriage feeding mechanism comprising a stepping 'dog, devices' for afi'ording variation in the extent of stepping movement of said dog, and tabulating mechanism including a column stop mountthe combi-i ed on the carriage and adjustable lengthwise thereof, said column stop cooperating with saiddevices to bring them into use.

31. In carriage feeding mechanism for typewriting machines, the combination of an escapement wheel, a stepping dog provided with a plurality of teeth cooperative with said wheel for letter feeding purposes and a holding dog, one of the teeth of said stepping dog cooperating with said wheel to stop the same to prevent reverse backward turning movements thereof,

32. In carriage feeding mechanism for typewriting machines, the combination of an escapement wheel, a stepping dog provided with a plurality of teeth one only of which normally cooperates with said wheel for letter spacing the carriage, a holding dog and means operating automatically to bring a second dog tooth into use to increase the extent of carriage feeding movement, said second dog tooth also cooperating with. said wheel to prevent reverse turning movements thereof.

33. In carriage feeding mechanism for typewriting machines, the combination of an escapement wheel, a stepping dog provided with a plurality of teeth, on e only of which normally cooperates with said wheel for letter spacing the carriage, holding dog, and means operating automatically to bring a second dog toothinto use to increase the extent of carriage feeding movement, said second dog tooth having its top out ofi' to provide a back stop for the escapement wheel.

34. In carriage feeding mechanism for typewriting machines, the combination of a circular rack, a holding dog, a stepping dog providedwith two teeth, one only of which normally cooperates with said rack during letter space feeding movements, two stops for said stepping dog, one normally operatively set and the other inoperative, and meansoperatingautomatically to move the operative stop out of the path of said 29. In a typewriting machine, the combistepping dog to permit cooperation of the second and normally inoperative tooth of said stepping dog with said toothed rack to provide for a toothed letter spacing movement of the carriage, the'top of said second tooth. of said stepping dog being cut off to prolgide a back stop for the circular toothed rac Signed at Syracuse, in the county of Onondaga, and State of New York, this 31st day of October A. D. 1911.

HERBERT H. STEELE.- Witnesses:

WILLARD C. HAY, FRANK MEIER.

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