US1734069A

US1734069A - Listing mechanism for adding machines

Info

Publication number: US1734069A
Application number: US216672A
Authority: US
Inventors: Glenn J Barrett
Original assignee: PORTABLE ADDING MACHINE COMPAN
Current assignee: PORTABLE ADDING MACHINE Co; PORTABLE ADDING MACHINE COMPAN
Priority date: 1925-08-14
Filing date: 1927-08-31
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05

Description

Nov. 5, 1929.

G. J. BARRETT LISTING MECHANISM FOR ADDING MACHINES 6 Sheets-Sheet y Filed Aug. 31, 1927 WAN NNN INVENTOR 6/6)? J Bar/"ell.

ATTORNEYJ 1929- G. J. BARRETT LISTING MECHANISM FOR ADDING MACHINES 6 Sheets-Sheet 2 Filed Aug. 31, 1927 Glenhffiarrehf.

ATTORNEYS Nov. 5, 1929. G. J.. BARRETT 1,734,069

' LISTING MECHANISM FOR ADDING MACHINES Filed Aug. 31, 1927 6 Sheets-Sheet 5 I 329 I j VT f 330 7 376 377 I lllll INVENTOR (9/6271? J. Bar/"elf.

ATTORNEYS INVENTOR 6167777 15621719 ATTORNEYS 6 Sheets-Shet 4 Nov. 5, 1929. G. J. BARRETT LISTING MECHANISM FOR ADDING MACHINES 7 Filed Aug. 51, 1927 Nov. 5, 1929. ca. J. BARRETT 1,734,069

LISTING MECHANISM FOR ADDING MACHINES- Filed Aug. 31, 1927 6 Sheets-Sheet 6 INVENTOR Glenn JTBar/"efl.

ATTORNEYS ennmr .I. BARRETT,

Original application filed August 14,

Patented Nov. 5, 1929- UNITED STATES PATENT OFFICE.

GEINE COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS LISTING- MECHANISM FOR ADDING MACHINES listing mechanism for adding machines and of construction, arrangements of parts,

has for its principal objects to provide simple and efli'cient means for printing amounts on a record sheet in accordance with the setting of numeral keys of the keyboard of the machine, to provide a printing mechanism operable automatically upon actuation of the general operator to list amounts during adding operations, to provide key-set means whereby the printing mechanism may be rendered ineffective to listamounts during adding operations, to provide improved means for taking impressions from aligned types on a plu' rallty of a key-set adding machine, to provide improved means for feeding and reversing the inked ribbon of the printing mechanism, to provide improved means for feeding the record strip through the printing mechanism, to provde eflicient means for feeding a reeled inked ribbon and a reeled record strip inter mittently past the impression line of the machine and pressing the same against types at the impression line through the medium of a platen and a vibratory platen support which is controlled from the general operator of the machine to shift the platen toward and from the type at each actuation of the general operator, and to provide means for taking an impression by a toggle connection between the general operator of the machine and a rocking platen support which is sub stantially at a dead center at the time the platen is pressed against the types, whereby the impression is taken by pressure rather than by impact.

To the foregoing and other ends, which will appear from the following description in detail of the preferred embodiment of the invention, the invention consists in the features combinations of devices set forth in the specification and particularly pointed out in the appended claims.

. In the drawings:

Fig. 1 is a side elevation of the machine with the outer casing or cover removed, certain of the operating parts being omitted to of type carriers differentially set in accordance with the setting of numeral keys and 1925, Serial No. 50,219. Divided and this application filed} Augtwt 31, 1927. Serial No.- 216,672.

more clearly. show the listing mechanism, and the parts shown being illustrated in normal idle position Fig. 2 a fragmentary side elevation showing the non-print key set and the platen frame rocking link in the position it occupies at the end of the forward stroke of the operating xhandle during non-print operations of the machine;

Fig. 3 a

athe machine, showing the parts positioned as at the endof the forward stroke of the operating handle 1 g Fig. 4 a transverse sectional view in the vertical plane of the main shaft 68;

Fig. 5 a fragmentary-view similar to Fig. 1 showing the parts positioned as at the end of the forward stroke of the handle during a printing operation of the machine;

\ Fig. 6 a perspective view showing the platen and its rocking frame and associated devices;

longitudinal sectional view of- Fig. 7 a s1de elevation of the rear part of Fig. 8a perspective view of the paper roll i supporting bracket;

Fig. 9 a perspective view of the paper roll supporting shaft or rod;

Fig. 10 a rear view of the machine substantially perpendicular to the printing planewith part of the cover casing broken away and the operating parts positioned as in Fig. 3;

Fig. 11 is a fragmentary central longitudinal sectional view of the machine showing the ribbon mechanism; V

v Fi 12a fragmentaryyiew of the machine showing the ribbon mechanism and part of the platen support in elevation as viewed from the left hand side of the machine;

Fig. 13 a top plan .view of-the ribbon mechanism, partly broken away through the upper spool, showingthe actuating arm of the dog carrier in its normal rear position and the feed-reversing mechanism in position for causiln'g winding of the ribbon upon the u er s 00 Fig. 14 a view similar toFigi-ldbut show- 30. carrier.

ing the actuating arm of the dog carrier in its forward position, as at the endof the forward stroke of the operating handle of the machine, ready for effecting a feed movement of the ribbon on the return stroke Fig. a top plan view of the ribbon mechanism with the parts above the dog carrier broken away and the dog carrier positioned as in Fig. 14;

Fig. 16 a view similar to Fig. 13, showing the reversing mechanism set to reverse the direction of feed on the next forward stroke of the actuating arm of the dog carrier to cause winding of the ribbon from the lower 15 spool on to the upper spool;

Fig. 17 a view similar to Fig. 15, showing the reversing mechanism setto reverse the direction of feed on the return stroke of the actuating arm of the dog carrier to cause Winding of the ribbon from the upper spool onto the lower spool;

Fig. 18- a perspective view of parts of the ribbon reversing mechanism detached;

Fig. 19 a perspective view of the ribbon g5 mechanism supporting means and the ribbon guide detached from the casing; and

Fig. 20 a detail view on the line 2020.of Fig. 17 showing the detent means for locking the feed reversing cams to rock with the dog This application is a division of my copending application, Serial No. 50,219, filed August 14, 1925, for improvements in adding machines, and only so much of the machine shown and described in said co-pending ap plication as is necessary for a full understanding of the subject matter claimed in this divisional application will be shown and described.

The machine has a baseplate 1, to which rubber supporting feet 2 are attached, and said base plate has

transverse bars

3 and 4 held thereto on its upper face adjacent its front and rear ends. F

rame side plates

5 and 6 are secured to the ends of

bars

3 and 4 and support the working parts of the machine, except the ribbon mechanism. which, as hereinafter described, is mounted on 'a cover casmg 8.

Casing 8 has an open bottom to enable it to be fitted over the supporting framework and enclose most of the working parts of the machine, and said casing is held in place by screws 9 threaded into

bars

3 and 4. The side plates support various transverse frame rods, including rods 136, and other parts hereinafter'described.

The top wall of casing 8 has an upwardly and rearwardly extending front portion provided with an aperture 10 exposing the keyboard of the machine, and said top wall has a downwardly and rearwardly extending rear portion extending to the upper end of the rear wall of the casing. The front and rear and side walls of the casing extendvertically.

The downwardly and rearwardly inclined top wall portion is provided with an aper- A take an impression therefrom. The aperture 11 extends part Way down the rear wall of the casing, as shown, to afford clearance for a paper-rollsupporting and. paper-strip tensioning means and also to afford clearance for the paper roll and for passage of the paper strip from the roll to the platen, as hereinafter more fully described. The ribbon feeding, reversing, and guiding means are mounted onthe downwardly and rearwardly extending top wall portion of casing 8 and the paper roll support is mounted on the rear wall of the casing, as more fully hereinafter A described.

The numeral keys 18 of the keyboard are arranged in foreand-aft extending rows of ten keys each, the keys 18 in each row having values 0 to 9, inclusive, from front to rear, and being mounted on the upper ends of plunger stems 19 suitably guided in the keyboard unit of the machine, as shown, and

normally held elevated by springs 33. The lower ends of stems 19 form numeral stops for cooperating with corresponding numeral stop lugs on stop-carrying slide-bars 86, when depressed, to arrest movementsof diiferentially rotatable adding sectors 79 and difl'erentially rotatable type segments 69 inaccordance with the setting of numeral keys of the machine in adding and listing operations, as shown in Fig. 3 and more fully shown and described in the co-pending application referred to.

.. The type segments 69 have hubs 7 3 loose on the main operating shaft 68 of the machine and are adapted to be differentially rotated in accordance with setting of numeral keys 18. A bail 294 mounted on and driven from shaft 68 cooperates with shoulders 295 on the type segments on the return stroke of the operating handle to restore the segments to normal idle position by clockwise rotation, as viewed in Fig. 3, and permits counterclockwise rotation of the segments on the forward stroke of the handle.

When the handle is in normal position the segments are locked against counter-clock wise rotation by noses '72 of pivoted locking stops 37 engaging in front of stop lugs 71 on thesegments. Stops 37 are. pivoted on a rod 36 of the keyboard unit and have lugs 40 coacting with the front ends slide bars 28 of'the flexible keyboard and are also connected with the slide bars 28 by springs 43. This connection is such that of the kcy locking' looat the same time lifts nose 7 2 of stop 37 above the lug 71 of the associated segment, as shown in Fig. 3.

The adding sectors are loosely mounted on the hubs of the printing, segments .and are connected by links 84 with the stop-carrying slide bars 86. The adding sectors have short pin and-slot lost-motion connections 8081 with the type segments and are connected with the segments by normally distended transfer springs 82 while, the type segments are connected with a frame \bar 77 by nor mally distended springs 74 passing over hubs 7 3 of the segments. On the forward stroke .of the operating handle 196 of the machine the bail 294 swings rearward and the springs advance unlocked type segments to position types thereon at the printing line in accordance with the setting of the numeral keys, the type segments being arrested by the key stems and the stop bars through the medium of theirconnections with the adding sectors. The adding sectors have toothed rack portions 107 for coaction with the accumulator 108 of the machine which is mounted in a shiftable frame controlled from'a cam disk 201 having its hub 199 fixed to shaft 68 by a pin 200. Main shaft 68 isjournalled in

frame plates

5 and 6 and is oscillated by the general operator of the machine which consists in the present instance of a crank handle 196 having a socket 197 interlocked with hub 199 of disk 201 and held in place by a locking screw 198 passing through the handle socket and screwed into the end of shaft 68. The

- types on the printing segments are arranged in an arc normally facing reai'wardly. Each segment carries types 0 to 9, inclusive, the 0 type being at the top and the 9 type at the bottom and all the type being normally below the printing line. Adding sectors 79 have stop lugs 120 cooperating with transfer devices 116 normally set to arrest return of the adding sectors before the bail 294 completes the return of the type segments to normal locked position. The keys are unlocked on the return stroke of the handle 196 by a suitable key releasing means 44-46+51' operated by a roller 221 on disk 201. The foregoing parts are all more fully shown and described in the co-pending application above referred to, as is the construction and operation of the adding mechanism,

and the foregoing description will enable those skilled in the art to fully understand the type-setting operation of the machine.

Platen supporting means The type 70 on the respective type segments 69 are rigidly held to the segments and toward and from the type segments.

face radially outward toward the rear and are adapted to be printed on by a suitable platen 141, which is'mounted for movement The platen 141 has its-shaft 159 rotatably mounted in platen frame side plates '142, which are secured together by transversely extending

stay rods

143, 144 and 145, to form a rocking frame, which is mounted upon a transversely extending rock shaft 146 located adjacent the rear wall of easing Sand journalled in the

frame side plates

5 and 6; The platen frame side plates 142 extend up through aperture 11 in casing 8 and may be secured to or otherwise adapted to be rocked by rocking the shaft 146, but preferably, a hub 147 is mounted on the rock shaft 146, as indicated in Figs. 3, 6 and 10 of the drawings, and secured thereto by a set pin 148, the hub being provided with a depending arm 149 having a forked lower end engaged with the lowermost stay rod 145. A collar 150 is secured to the rock shaft 146 at the inner face of the left-hand side plate 142 to hold the platen rocking frame in spaced relation to the main frameside plates5 and 6, a spacing collar 150 being inserted between the outer face of left hand side plate 142 of the rocking frame and the main frame side plate 6, as indicated in Fig. 10. An additional collar 151. is secured to the left end of the

rock shaft

146, 1

outside the side plate 6, for preventing move ment of the shaft toward the right, as viewed from the front of the machine. The side plates 142 of the platen rocking frame are preferably provided with forwardly pro jecting lugs 152- adapted to engage a fixedtransverse rod 153, mounted in the

main frame plates

5 and 6, for limiting the rear-' ward movement of the platen under the action of a spring 154, (see Figs. 1, 6 and 10) connected at one end to the lowermost stay rod 145, the other end extending toward the front of the machine and being suitably anchored to one' of the transverse rods of the 1, 3, 7 and 10, the stop rod being held in ad-' justed position by suitable clamping screws 158.. By means of this adjustment, the pressure of the platen a ainst the type 70 of the,

type segments may be regulated.

Line-spacing mechanism T have prdvided simple and compact linei 5K 5, said pawl extending through aperture 11 v in the casing, as shown in Figs. 1, 6, 7 and 10.

spacing means for feeding a work piece over the platen step-by-step, which mechanism consists of few parts and is operable by the swingin movements of the platen frame.

The platen 141 is preferably secured to the platen shaft 159 by a suitable set screw 159* in the hub 160 of the'platen, and the right hand end of the platen shaft 159 is provided with the usual knurled knob or twirler 162 for manual rotation of the platen. The hub 161 at the right hand end of the platen is provided with a line space ratchet wheel 163, which is adapted to cooperate with the nose 164 of a line space pawl 165 pivoted at 166 to a stud 167 secured to the main frame plate A spring 168 is provided for urging the line space pawl toward the rear, the spring being connected to the pawl and to a fixed pin 169 on frame plate 5, as shown in Figs.1 and 10. Movement of the line space pawl 165 toward the rear is limited by a forwardly projecting finger 170 on the lower pivoted end of the pawlwhich is adapted to engage under the stop rod 153, as indicated in Figs. land 6.

A detent roller 163 is mounted on the lower end of a lever 163 pivoted at 163 on the platen frame and adapted to resiliently engage the teeth of the line space ratchet 163, a spring 163 being connected between the lever and a pin on the platen frame plate 142.

The arrangement just described is such that, when the platen rocking frame is moved forward on the forward stroke of the handle 196 the nose 164 of the line space pawl 165 will be engaged by the ratchet wheel 163 and the pawl then rocked forward and downward about its pivot 167 on the main frame to the position shown in Fig. 7, against theitension of spring 168, the nose of the pawl sliding back over one tooth of the ratchet wheel owing to the different centers about which the platen and pawl rock, so that, as the platen rocking frame moves back to normal position on the return stroke of the handle, the platenv will be rotated one line space by reason of the different pivoting of the pawl and platen frame, and just before the platen rocking frame reaches normal position, the'pawl 165 will be withdrawn from'the ratchet wheel by the engagement of the finger 17 0 with the rod 153, and the platen will be held against accidental rotation by the detent roller 163. The

.. normal position of the parts is illustrated in Figs. 1 and 6.

I Zeper'su ppZy z' n g, feeding, and guiding means Paper supplying, feeding and guiding meansare provided whereby a paper strip is unreelcd from a supply roll and fed over the front of the platen 141. A deflector plate or apron and paper guide 171 is secured by screws 172 to the stay rod 144, immediately below the platen, and extends in a semi-circular loop 17 3 around thefrontof the platen. The guide plate is cut out at 174, some distance below the printing line, to leave space for the type on the type segments to reach the platen, or the paper thereon, for the printing operation. The ends 175 of the narrow strips of the paper guide, on each side of the printing line, are preferably bent upward and pass through holes 176 in a paper tearing-off blade 177, which is securedto the uppermost stay rod 143 by ears 178 at its front end. The tearing-off blade 177 is rigidly held l in position above the platenwith its tearing edge rearmost by lugs 179, formed at the sides "thereon. The feed rollers 181 are preferably provided with knurled faces, and. are freel rotatable upon a transversely extending sha t ,182, the reduced ends of which are loosely supported in short up-and-down extending slots inv forwardly projecting arms 183 of a rocking feed roll frame 184, which straddles paper apron 171 and is pivotally mounted on the stay rod 144, as shdwn in Figs. 8, 6 and 10.

A spring 185 is coiled about the stay rod 144 and arranged so that one end extends un der shaft 182 and engages a notch 186 in said shaft between the two feedrollers, while the other end engages in front of the depending edge of the guide plate171, as will be seen in Figs. 3 and 6 of the drawings. In this manner, the feed rollers 181 are resiliently held for feeding engagement with the platen, and

preferably, the'rocking frame 184 is provided with rearwardly and upwardly extending finger pieces 187, which may be moved forward to rock the feed roll. frame about "stay rod 144 for releasing the feed rollers from the platen when it is desired to adjust the paper.

The platen 141 is preferably short, so as to accommodate merely anarrow strip or rib bon of paper, adapted to be drawnfrom a paper roll 188. The roll of paper 188 is removably mounted upon a supporting shaft 189 provided with annular grooves 190 at the ends thereof, in which are adapted to engage theedgcs of slots 191 in a paper-roll-support ing bracket 192. The paper roll bracket is secured to the rear lower edge of the cover c'asing 8 below the aperture 11 in the casing, by suitable screws 193. The slots 191 in the paper roll bracket 192 extend upward and rearward at a relatively sharp angle, so as to provide a gravity feed of the roll 188 to keep the roll of paper in contact with a friction roller 194, rotatably mounted in the forward ends of extensions 195 of the roll-holder the lower end of aperture 11 in casing 8. This arrangement enables the paper to be readily drawn from the roll 188 at the-upper side of said roller 194 upward and over the deflector plate 171, the tension on the paper stri being regulatedby the pressure of the roll paper against the friction roller 194.

The roller 194 is preferably placed close to the rock shaft 146 on which the platenrocking frame is mounted. The paper always runs from above the roller 194 to the platen so that the relation of the paper to the platen remains the same without regard to the diameter of the roll of paper. The paper,

therefore, will be fed under uniform condi-,

tions at all times; and by placing the roller 194 close to the pivotal axis of the platen rocking frame no material slack will be developed in the paper strip between the platen and the roller because of the oscillations of the platen rocking frame. Any slight slack developed will be taken up by the feeding of the paper around the platen.

Ribbon mechanism I the satisfactoryfeeding of the ribbon, but

also to provide for the automatic reverse of the feed, which will not require any attention on the part of the operator. I have provided a compact and simple ribbon mechanism operable by the shiftingplaten frame@ A bracket 329 for the ribbon mechanism is mounted on the 'rearwardly and downwardly inclined rear portion of the top wall-of the cover casing 8. at th left hand side edge of aperture 11 in the casing and secured to said portion of the casing by suitable screws 3 30, as indicated in Figs. 4,10 and 12 of the drawings. The bracket 329 is provided at its lower edge with an upwardly and rearwardly extending plate 331, provided with a rod or shaft 332, projecting laterally therefrom upwardly and forwardly and forming the axle for a pair of ribbon spools 333 and 334, which are held in place thereon by suitably spaced sealing clips (not shown) and a screw 335, threaded in the end of the axle rod 332 and cooperating with a washer 336. Y

The ribbon spools333 and 334 are spaced apart on the axle 332, and pivotally mounted therebetween on said axle is a ribbon feed dog-rocker 331- provided with a laterally projecting rock-$111338. Therock-arm 338 is provided with an ear 339. adapted to be engaged and rocked forward by a pin or stud 340. projecting from the left hand platenrocking frame plate 142, to rock the dog rocker about'axle 332 to the position shown in Fig. 14 from its normal position shown in Fig. 13. A rearwardly projecting ear 341 on the dog rocker is provided with two

feed dogs

342 and 343, pivotally mounted thereon on a stud 344, the feed dogs being adapted to cooperate with ratchet teeth 345, formed on the peripheries of adjacent spool flanges of the ribbon spools 333 and 3341 The dog rocker 337 is provided with an arm 346 projecting laterally outward and provided with a hole 347 in the end thereof, in which one end of a dog-rocker return spring 348 is secured. The opposite end of the spring'348 is secured to a laterallyprojecting lug 349 011 the base of a small bracket 355 secured to the base of bracket 329, as indicated in Figs. 13 and 17. The dog-rocker return spring 348 is adapted to restore the dog rocker to normal position, shown in Fig. 13 after it has been moved or rocked to the position shown in Fig. 14 by engagement of the pin 340 on the platenrocking frame with the dog rocker ear 339. The dog rocker 337 is further provided with a stop finger 350 adapted to engage a rod 351 held to bracket 329 parallel with axle rod 332 to thereby limit the return movement of the dog rocker under the action of the spring 348. The noses 358 of

dogs

342 and 343 are adapted to be urged toward the ratchet teeth,

345 of the respecti ve ribbon spools by means of springs 352 connected to the respective dogs and to the dog rocker arm 346m the 345 of the respective ribbon spools 333 and 334. Obviously, in feeding the ribbon in one direction or the other, only one of the

feed pawls

342 or 343 will be in operation at a time, and the ribbon spool not'being fed b hole 247 asindicated in Figs. 10; 12, 14 and its feed dog should be left free for indepen ent rotation as the ribbon is unreeled therefrom by the action of the feed dog of the other spool on its spool. Therefore, the detent dogs 353 are provided with overhanging ends 357 adapted to lie above the laterally bent noses 358 of the

respective feed dogs

342 and 343, so that when the feed dog of either spool is lifted out of operative relation with the teethof the corresponding ribbon spool, the detent dog 353 associated therewith will also be lifted out of the field of the ratchet teeth, as shown in Fig. 16. The detent dogs 353 are preferably resiliently held in cooperative relation with thefeed dogs and ratchet teeth of the respectiveribbon spools 360 and 361 are mounted upon the axle 332,

one on each side of the dog rocker 337. 5

The cam plate 360 is provided with a cam edge 362 having a dwell portion at one end and cooperating with the nose 358 of the feed dog 342, while the cam plate 361 is provided witha cam edge 363 having a dwell portion at one end and cooperating with. the bent end 358 of the feed dog 343. The two cam plates 360. and 361 are rlgidly secured together by a tie rod 364, so that when cam plate 361 is moved about axle 332 by meansof an outwardly projeetin manualribbon-reversing finger piece 365, ormed as part thereof, the other cam plate 360 will also be moved, and the arrangement is such that when the cam edge 363 is moved under its dog, the cam edge 362 will be moved out from under its dog,

' thereby permitting the latter to operate in the ratchet teeth 345 of its ribbon spool, for feeding action of the ribbon, when the dog rocker 337 is operated. I

Obviously, the

cam plates

360 and 361 should rock with the dog rocker 337, in order to maintain one of the

feed dogs

342 and 343 in operative position and the other feed dog in inoperative position and, therefore, a detent, operating between the cam platesand the dog rocker 337, is provided consisting of a'spring pressed pin 366 in the dog rocker 337, cooperating with two positioning holes 366, located in the cam plate360. When the nose 358 of the dog 342, and the nose of said cam plates are inthe position shown in Fig. 13 the dwell of cam edge 362 is under the dog 342 and the detent pin 356 of the corresponding detent dog 353 are held out of ooo erative relation with the ratchet teeth 345 o the ribbon spool 333, so that the ribbon 37 6 will be wound on the upper spool 334. -When the cam plates are shifted to the position 4 and hol shown in Fig. 16, the dwell of. cam edge 363 is engagied under the nose 358 of dog 343 s the nose of said feed dog and the detent pin 356 of its corresponding detent dog 353 out of operative relation with the ratchet teeth 345 of theupper spool 334, so that the ribbon 376 will be wound on the lower spool 333. The feeding or spool-rotating acnection with my improved ribbon feed mechanism, I have provided an automatic reverse,

which comprises means for automatically shifting the

cam plates

360 and 361, through adapted to move toward and from the spool centers as the reeled portion of the ribbon on the respective spools decreases or increases in this manner, the following fingers 367. are

diameter, and this motion of the following fingers is utilized for moving

dogs

369 and 370 respectively carried on the hubs of the following fingers of the upper and lower spools and provided respectively with oppositely extending

ears

371 and 372. The

cam plates 3.60 and 361 are provided with operating fingers 37 4 and 373 respectively adapted to cooperate with the

ears

371 and 372, when the latter are thrown into the paths thereof by movement toward the center of the spools of the associated following fingers 367. As will be seen in Fig. 18, the cam operating finger 373 is provided with a squared end,"

adapted to abut againstthe car 371 when said ear is moved outward in its path, as shown in Fig. 16, while the cam fin'ger 374 is'provided with-a hook end 375 adapted to hook under the ear 372 when said ear is thrown outward into its path, as shown in Fig. 17.

It will be recalled that the rigidly connected

cam plates

360 and 361, carrying the

respectiveoperating fingers

374 and 37 3, are yieldably locked to rock with the dog rocker 337; each time the dog rocker is operated by the pin 340 on the platen-rocking frame.

Hence, when the automatic reversing mechanism is set by substantial exhaustion of the ribbonfrom the upper spool 334 in the position shown in Fig. 16,withtl1e ear 371 moved outward so as-to lie in front of the end of the finger 373 of cam plate 361, the parts are in position to reverse the feed when the rock arm 338 is operated by the in 340. When the dog I rocker 337, is rocked y. the pin 340 it will move as usual tofthe position shown in Fig. 14 but the

cam plates

360 and 361 will be prevented from moving therewith at this time by the engagement of the operating finger 37 3 with the dog ear 371; thus the cam plates will be shifted relatively to the dog rocker and dogs and the cam 362 will be brought into the h position shown in Fig. .15 to lift the feed dog 342 upon the dwell ofcam edge 362, thereby" preventing further rotation of the ribbon spool 333 by said dog, while the camedge 363 of cam 361 will be withdrawn from support of the dog 343 and the latter, under the pull of its spring 352, will be brought into feeding relation with the corresponding ratchet teeth 345 of its ribbon spool 334, as indicated in Figs. 13 and 14. When the following finger 367 of the spool 333 reaches the position shown in Fig. 17, that is, when the spool becomes nearly empty, the corresponding dog 370 is moved outward to bring its car 372 into the throat of hook 375 of the operating finger 374 carried by the cam'plate 360, as shown,

so that, upon the return movement of the dog rocker 33 from the position shown in Fig. 17, the spring 348 will restore the dog rocker to normal position, but the dog ear 372 will hold the

cam plates

360 and 361 from movement with the dog rocker at this time, thereby shifting the relative position of the cams and dog rocker and placing the dwell of cam edge 363 under the nose of the dog 343, thus lifting the latter, and its cooperating detent dog 353, out of cooperative relation with the corresponding ratchet teeth 345 of the spool 334 while cam edge 362 will be withdrawn from the nose of dog 342 to permit the said dog and its detent to cooperate withthe teeth of spool 333 and thereby again reverse The ribbon 376 is carried between the respective ribbon spools over a ribbon guide plate 377, which is mounted, by means of ears 378, on the rearwardly and downwardly slanting portion of the cover casing 8, aS shown in Fig. 10, thekears 378 being located in depressions 379 in the cover casing at the horizontal upper edge of the opening 11 therein. The ribbon guide 377 is secured to the casing 8 by suitable screws 380, so as to lie across the upper part of aperture 11 in a plane parallel to the printing plane of the types 70 ontype segments 69 when at the printing line. The ribbon 376 is adapted to pass. through two aligned slots 381 at the left hand end of the guide plate and over two right angle direction changing edges 382 at the right hand end of said plate so that the ribbon will pas from one spool to the other and lie in parallel bands extending from the spools over the ribbon guide across the aperture 11, the lower band of the ribbon passing over the printing line of the types, so that it isadapted to be between set types and the paper when the platen is-moved forward in the printing operation. The upper ribbon spool 334 of the ribbon mechanism is preferably provided with a small knob 383 for man of the machine, is

ually winding the ribbon, when it is necessary to do so, for instance, in taking out an old ribbon and putting in a new one."

Platen support operating means The cam disk 201 which operates the shiftable supporting frame for the accumulator also utilized for operating the rocking platen-supportin frame for moving the platen toward. and segments in the printingoperation. For this purpose, a link or pitman .222 is pivotally vmounted on a stud the feed.

The link or pitman 222 and rom the type the axis of rotation 'of the main or handle shaft 68 on which the disc is fixed, as i'ndi cated in Fig. 1, the link normally extending downward and rearward from said stud at such an angle that the disc and link have a toggle action which brings the pivot 223 substantiallyinto, a straight line between the shaft 68 and the rear end ofthe link when the handle is at the forward end of its stroke, as shown in Fig. 5. .The rear end of'the pitman or link'222- is provided with a laterally and inwardly projecting stud 224, preferably mounted for slight adjustment and secured in place by jecting end of stud 224 is adapted to norslot 226 in the lower extremity of a crank arm 227, secured to the outer end of the platen frame rock shaft 146,-the arrangement being such that there is a certain amount of lost motion during the first part of the forward stroke of the handle 196, beforethe stud 224 will engage the rear end ofthe open slot 226 and rock the platen frame to swing the platen toward the printing point. ll'he toggle action, of the disk and link, near the end of the forward stroke of handle 196, as the pivot 223 brings the link or pitman to dead center, will force the platen against the type segments for pressure printing upon the paperistrip 188 of segment that stand at the printing line. The

a lock nut 225. The inwardly pro- I 223 earriedby the cam disk 201 and normally located forward of limit, the movement of the platen against the type segments, the lower extremities 155 of the laten rock'frame are adapted to engage the transversely extending stop rod 156 to thereby prevent excessive pressure when only a few type segments are to ,be printed from.

preferably held in proper. relation with the open slot 226 in the crank arm 227, by a vertically slotted bracket plate 228 secured to the side of the crank elongated to allownpward movement of the rear end. of the link. On the return stroke of the operating handle 196 the platen-frame restoring spring 154 returns the platen and its frame to normal position and holds it there as hereinbefore described.

desirable in machines of g It is frequently this type to operate printing the numbers, fected by providing erated or controlled by a non-print key. In the present instance it will be seen that, if the stud 224 onthe end of the pitma or link 222 is lifted out of the open slot 22 the the machine without and this is usually ef-' a special mechanism opits stud 224 are.

arm 227, the slot being rock arm 227 will not be operated on theforward stroke of the handle and, hence, the

platen will not be moved forward for print- I edge portion 242 of the rear end of a lever 230, pivoted at 231 on frame plate 5, as shown in Fig. 1. The lever 230 is located just inside the right frame plate 5 of themachine and the forward end 232 thereof is ofiset through an aperture 233 in said plate so as to lie out-\ side of the frame plate, as indicated in Fig.

1.. The forward end 232 of the lever is provided with an outwardly projecting stud or pin 234, passing through an elongated slot' or opening 235 in the lower end of a non- "print key-carrying plunger 236, which extends upward through aslot 237 in a laterally projecting shelf-like plate or bracket 237, secured to the side frame plate 5, substantially parallel to-the keyboard as will be seen in Fig. 1. Preferably the pin 234 is floatingly mounted in the slot 235 in the key plunger, .by means oftwo

springs

238 and 239, each connected to the pin 234, the lower spring 238 being connected at 240 to the lower end of the key-plunger, while the upper spring 239 is connected at 241, with the shelf 237, as indicated in Fig. 1. This connection is desirable because of the. resistance at the rear end 242 of the lever 230 when attempting to lift'the stud 224 before operating the handle. .The rear end of the lever 230 is provided with an arcuate edge at 242 to permit the pin portion 229 of stud 224 on the end of the link 222 to remain in notch 226 when the-non-print key is in normal position and to slide over the ndtch 226, during an operation of handle 196, when the forward end .232 of the lever is pulled down by the spring 238 after a depression of non-print keyplunger 236. The key-plunger 236 is preferably provided with a notch 243, adapted to receive the shelf plate 237 at the rear end of slot 237 when its key is depressed to hold the key-plunger in depressed position.

This arrangement enables the key plunger 236 to be depressed and la tched down before the handle 196 is started, the lower spring 238 being extended thereby, and as soon as the handle is started, the front end of lever 230232 will bedra'wn down to the position shown in Fig. 2, thereby lifting the stud 224, so that it will ride over the open top of the slot 226 on the edge 242 of the lever without moving the platen frame rock arm 227. The position of the rear end of the pitman link 22-2,'at the end of the forwardstroke of the handle, when the non-print key is in depressed position, is shown in Fig. 2.

Obviously, one advantage of operatingthe line-spacing mechanism and the ribbon feedmg mechanism by means of the platen-rocking frame 142, is that, when the non-print key is depressed to eliminate the printing of a number by preventing rocking of the platen frame, operations of the line-spacing mechanism and the ribbon feeding mechanism are automatically eliminated at the same time.

It will be observed that I have provided an adding and listing machine wherein the listing mechanism is of-simple and compact construction particularly suitable for small portable machines; that I have provided simple and efi'icient means for listing numbers on a record strip so constructed that the last listed number is readily visible after each actuation of the machine; that the listing mechanism may be put out of action when desired; and that the several devices coacting for recording or listingnumbers on a record strip are so constructed, arranged and operated as to reduce the number of parts to a minimum and to function in an efficient manner.

lVhat I claim is:

1. In a key-set adding and listing machine, the combination of a main frame, a general operator for the 1nachine,numeral keys,a plurality of type se ments mounted on the main frame, numeral types rigidly affixed to said segments and normally facing toward the rear of the machine, means whereby said segments are differentially moved from normal position in accordance with the setting of the numeral keys to present selected types side by side with their facesin a printing plane in- 'clined downward and rearward and then restored to normal position upon actuation of the general 0perator,.a casing for the machine having a top wall the rear portionof which extends downward and rearward and is provided with an aperture through which types in the printing plane are exposed, a platen located above said aperture andmovable there- .jthr ough against types in the printing plane,

an inked ribbon feeding mechanism mounted on the downward and rearward extending top wall portion of the casing adjacent one side of said aperture, a ribbon guide. mounted on said top wall portion of the casing above said aperture and projecting over said aperture for supporting a portion of the ribbon over the printing plane of the types and in a plane substantially parallel with the printing plane, a rocking support mounted on the main frame and extending up through said aperture and in which the platen is journalled, means operable from the general operator for rocking said support to swing the platen forward and downward through said aperture against types in the printing plane, means for actuating the ribbon feeding mechanism from the platen support, and line-spacing means for rotating the platen operable by rocking movements of the platen support.

2. In a key-set adding and listing machine, the combination of a main frame, a general J position in accordance with the setting side with their maeoee operator for the machine, numeral keys, a plurality of type segments mounted on the main frame, numeral types rigidly afixed to said segments and normally faclng toward the rear of the machine, means whereby said segments are differently moved from normal of the numeral keys to present selected type side by faces in a printing plane inclined downward and rearward and then restored to normal position upon actuation of the general operator, a casing for the machine having a top wall the rear portion of which extends downwardiand rearwardand is pro; vided with an aperture through which types in the printing plane are exposed, a platen located above said aperture and movable therethrough against types in the printing plane, an inked ribbon feeding mechanism mounted on the downward and rearward extending top wall portion of the casing adjacent a one side of said aperture, a ribbon guide mounted on said top wall portion of the casing above said aperture and projecting over said aperture for supporting a portion of the ribbon over the printing plane of the types and in a plane substantially parallel with the printing plane, a rocking support mounted on the main frame and extending up through said aperture and in which the platen is journall'ed, means operable from the general operator for rocking said support to swing the platen forward and downward through said aperture against types in the printing plane, means for actuating theribbon the platen support. 1

"3. In a key-set adding and listing machine, the combination of a main frame, numeral keys, 'a g neral operator for the machine, a plurality of type segments pivotally mounted on the main frame, numeral types rigidly afiixed to said segments and normally facing toward the rear of the machine, means whereby said segments are differentially moved from normal position in accordance with the setting of the numeral keys to present selected types side by side with their faces in a printing plane inclined downward and rearward and then restored to normal position .upon general operator, a casin for the machine having a rear wall and a o a top wall the rear portion of hich extends downward and rearward to the rear wall, said casing having an aperture extending partly through the rear wall and said downward and rearward extending topwall portion, and through the upper portion of which types in the printing plane are e ed, a platen normally located above able therethrough against types in the printa rocking platen support pivoted on the main frame adjacentthe rear wall of the casing and extending up through said aperture and in the upper part of which the feeding mechanism from actuation of the,

saidapertu're and mov-' platen is journalled, a paper roll support held to the rear wall of said casing for supporting a roll of paper at the lower end of said aperture close to the pivotal axis of the platen support for passage through the casing aperture to the platen, means on the platen support for guiding paper from a roll on the paper roll support over the front of the platen and holding the same to move toward and from the types with the platen, means operable upon actuation of the general operator for rocking the platen support to swing the platen downwardly and forwardly against types in'the impression plane and restore the platen to normal position, line-spacing mechanism operable by rocking movement of the platen support for rotating the platen to unroll paper from a roll on the paper support and feed the same past the platen, and means operable by rocking movements of the platen su port for feeding an inked ribbon between the platen and the impression plane of the types.

4. In a key-set adding and listing machine, the combinatiorr of a main frame, numeral keys, a general operator for the machine, a plurality of type segments pivot ally mounted on the 'main frame, numeral normally facin toward the rear of the ma chine, means w ferentially moved from normal position in t i accordance with the setting of the numeral keys to present selected types side by side with their facesin a printing plane inclined downward and rearward and then restored to normal position upon actuation of the general operator, a casing for the machine having a rear wall and also a top wall the rear portion of which extends downward and rearward to therear wall, said'casing having an aperture extending partly through the rear wall and said downward \and rear- -ward extending top wall portion, and through the upper portion of which types in the printing plane are exposed, a platen normally located above said aperture and movable therethrough against types in the printing plane, a rocking platen support pivoted on the main frame adjacent the rear wall of the casing and extending up through said a erture and in the upper part of which the p aten is. journ'alled, a paper roll support held to therear wall of said casing for supportinga roll of paper at the lower end of said aperture close to the pivotal axis of the platen support for passage through the means operable upon actuation ofthe general operator for rocking the platen support to swing the platen downwardly and forwardly against types in the impression plane and restore the platen to normal position, and line-spacing mechanism operable by rocking movement of the platen support for rotating the platen to unroll paper from a roll on the paper support and feed the same past the platen.

5. In an adding and listing machine, the combination of a general operator for the machine, numeral keys, type carriers movable in fixed paths and each provided with a set of fixed numeral types, means operable upon actuation of the general operator to move the carriers to present typesside by side in a common impression plane in accordance with the setting of the numeral keys and subsequently restoring the carriers, a platen normally out of the impression plane, a shiftable platen support, means including a pitman link driven by the general operator and connected with.the platen support for shifting the platen against types in the impression plane, and a spring connected with .the platen support for 'yieldably holding the platen out of-the impression plane.

6. In an adding and listing machine, the combination of a general operator for the machine, numeral keys, type carriers movable in fixed paths and each provided with a set of fixed numeral types, means operable upon actuation of the general operator tomove the carriers to present types side b side ina common impression plane in accor ance with the setting of the numeral keys and subsequently restoring the carriers, a platen normally out of the impression plane, a shiftable platen support, means including a pitman link driven by the general operator and connected with the platen support for shifting the platen against types in'the impression plane, a spring connected with the platen support for yieldably holding the 'platen out of the impression plane, andnormally ineffective key-actuated means effective on said link when actuated to shift said link to a position in which it is ineffective to "transmit movement to-the platen support L. claimed inclaim] wherein the toggle conwhen the general operator is actuated.

7. In an adding and listing machine, the combination of a general operating handle for the machine, numeral keys, type carriers movablefin fixed paths and each provided with a set of fixed numeral types, means oper-.

able upon actuation of theoper'ating handle to move the carriers to accordance with the setting of the numeral keys side by side in a common impression plane, a platen normally out of the impression plane, a shiftable support for the platen,

and a direct toggle connection between the operating handle and the platen support for forcing the platen against types in the impression plane. v

8. Anadding and listing. machine as nection is so arranged as to be approximately on a dead cehter against the types.

claimed in. claim 7, having disconnecting the toggle from the platen support at will.

.10. In an adding and listing machine, the combination of a general operator, numeral keys, types, means operating upon an actuation of the general operator to osition types. in accordance -with"the setting 0? by side in a common impression plane, a

platen normally out of the impression plane,

a shiftable platen support, a connection between the general operator and the platen support for moving the platen to the impression plane, and operating with the platen support for-positivel limiting movement of the platen to war the impression plane. j

11. In an adding and listing machine, the combination 'of a general operator, numeral y typ i tion of-the general operator to position types in accordance with the setting of the keys 9. An adding and listing machine as key-set means for when the platen is forced the keys side V adjustable stop meansco-- means operating upon, an actuaside by sidein a common impression plane,

I a platen normally out of the. impression plane, a versely s aced members held to rock with said sha t and in which the ported-at one side of said shaft, said members aving stop fingers at the opposite side of said shaft, an adjustable stop member engageable by said stop fingers to positively limit movement of the platen toward the impression plane, and a connection between the general operator and said .rock shaft for rocking the shaft to swing the platen to the I matype horizontal rock shaft, a pair of trans platen is sup plane, a platen against typesin the impression plane and I arranged so as to be approximately on a dead center when the platen is pressed thereby present types im against the types. v

13. In an adding and listing machine, the 7 combination of a general operator for the machine, a platen, a series of differentially and each provided types normally below the platen and facing rearwardly, general-operator-controlled means for moving the carriers upwardly and forwardly to align selected types in a common printing plane ..facing upwardly and rearmovable type carriers arranged side by side with a set of'fixed numeral wardly toward the platen and subsequently restoring the carriers, means for supporting a work piece over the front of the platen to move toward and from the types with the platen, general-operator controlled means for moving the platen forward and downward to force a part of the work piece at the front of the platen against the types aligned in theimpression plane and then retracting the platen to expose the impression on the work piece, means forsupporting an inked ribbon on the main frame over the impression plane in front of the platen, means for feeding the ribbon during retraction of the platen operable by said generaloperator-controlled platen moving means, and means for linespacing the work piece during retraction of the platen operable by said general-operatorcontrolled platen moving means.

14. In a key-set adding machine, the combination of a general operator for the machine, type carriers differentially movable upon actuation of the general operator to position types in accordance'with the setting of the numeral keys of the machine side by side in a common impression plane, a pivoted platen support, a rotatable platen journalled in said support, general-operator-controlled means for vibrating the support to move the platen to and from the impression plane at each'oper'ation of the general operator, a linespace ratchet held to rotate with the platen and vibrate therewith, a line-space pawl pivotally supported independently of the pivoted pattern support to swing about a different axis, a spring urging said pawl toward the ratchet wheel, and a stop engageable by said pawl to normally hold the pawl out of engagement with the ratchet and in position to be engaged and rocked by the ratchet in opposition to said spring as the platen is moved toward the impression plane.

15. In an adding and listing machine, nu- ,meral types, type setting means, a rotatable platen, a pivotally mounted platen support having side plates in which the platen is v journalled and a stay rod connecting said side plates located below the platen, means for rocking the platen support to move the platen toward and from set types for taking an im- 1 pression, a pair of paper feed rollers located adjacent opposite ends of the platen below the platen, a feed rollenframe pivoted on the stay rod, a shaft for the feed rollers mounted in said frame for limited movement independently of the frame toward and from the platen, a spring mounted on the stay rod and engaging under the shaft between the feed I rollers for resiliently pressing the feed rollers against the platen, a paper guide mounted on the stay rod and extending around the frontof the platen, a paper tearing plate mounted on the platen support above the platen with which the upper end of the paper guide 15 connected, means for supporting a paper roll adjacent the pivotal axis of the platen support for unreeling of the paper between the platen and the paper guide and feed rollers and tearing plate, and means operable by rocking movements of the platen support for rotating the platen to unreel paper step by step from a roll on the paper roll support.

16. In an adding and listing machine, nu meral types, type-setting -rneans, a rotatable platen, a pivotally mounted platen support in which the platen is journalled, means for rocking the platen support to move the platen towardand from set types to take an im.- pression, a friction drag roller mounted adjacent to and parallel with the pivotal axis of the platen support,means for supporting a roll of paper for sliding movement by gravity against said drag roller, means on the platen support for guiding an unreeled portion of the paper roll over the platen and holding it to move with the platen toward and from the types, and means operable by the rocking movements of the platen support for rotating the platen step by step to unreel paper from the paper roll.

17. In a key-set adding machine, the combination of a plurality of differentially movable type carriers, a set of numeral types rigidly held to each type carrier, numeral keys, a general operator for the machine, means controlled by said general operator for moving the carriers in accordance with the setting of the numeral keys to position types side by side in a common printing plane and then restore the carriers, a platen, a shift-' ablsupport on which the platen is mounted,

general-operator controlled means for shifting said support to move the platen toward and from the type carriers for printing numbers, a ribbon supporting and feeding mechanism for feeding an inked ribbon between the platen and the printing plane mounted independently 1 of the platen support, and

bon between the platen and the impressiontaking position ofthe types.

'19. In a key-set adding and listing ma: chine, the combination of a general operator for the machine, numeral keys, type segments pivotally supported to move about a fixed axis and each having a set of fixed numeral types thereon, generaleoperator-controlled means for differentially moving the segments to present types in accordance with the set-- ting of the numeral keys in a common printing plane wherein the type face rearwardly,

a platen, a vibratable support for the platen,

plane close to the printin by vibratory movements of t e platen support" general-operator-controlled-means for v1- brating the support to move the platen against types in the impression plane and retract the platen to expose the impression, means for supporting and feeding an inked ribbon between the'platen and the printing plane operable and mounted independently thereof, and means for guiding a work piece over the front of the platen to move therewith to and from" the printing plane. Y

20. In a key-set adding and listing machine, the combination of a general operator for the machine, numeral keys, type segments general-operator-controlled means for vibrating the support to move the platen against types in the impression plane and retract the platen to expose the impression, means for supporting-and feeding an inked ribbon between the platen and the printing plane close to the printing plane operable by vibratory movements of the platen support and mounted independently thereof, means for guiding a work piece over the frontof the platen to -move therewith to and from the printing plane, and means mounted partly on the platen support nd partly independently thereof for line-sii'acing the work piece and operable by vibratory movements of the platen support.

21. In a key-set adding and listing machine,

the combination of a general operator for the machine, numeral keys, type segments pivotally supported tomove about a fixed axis and each having a set of fixed numeral types thereon, general-operator-controlled means for differentially moving the segments to present types in accordance with the setting ofthe numeral keys in a common print ing plane wherein the type face rearWar-dly, a platen, a vibrat-able support for the platen, general-operator-controlled means for vibrating the support to move the platen against types in the impression plane and retract the platen to expose the impression, means for supporting and feeding an inked ribbon between the platen and the printing plane close to the printing plane operable by vibratory movements of the platen support and mounted independently thereof, means for guiding a work piece over the front of the platen to move therewith to and from the printing plane, and means for rendering the platen support vibrating means ineffective during operations of the general operatorat will.

22. In an adding and listing machine, the combination of an oscillatable'general operating handle for the machine, numeral types,

type-setting means controlled by the operat ing handle, a pivoted platen support oscillatable about an axis extending transversely of the machine, a platen on said support, a pendent rock arm held to rock with said support in a plane extending fore-and-aft of the a machine and having an open top .slot therein,

a member oscillatable by the operating handle in a plane extending fore-and-aft of the machine, a link pivoted at its forward end to said member, a stud on the rear end of said link normally engaged in said slot for rocking the rock arm rearward to move the platen toward set types, a spring for retracting the platen from the types, a key plunger guided for up-and-down movement and having a longitudinal slot intermediate its ends, a level extending fore-and-aft of the machine and pivotally supported between the key plunger and the rear end of said link and extending rearward under said stud on the link, a stud on the forward end of the lever normally engaged in the bottom of the slot in the key plunger, a coil spring connected at its upper end with the stud on the lever and at its lower end with the key plunger,'anda second combination of a general operator, numeral keys, numeral types, means controlled by the general operator for positioning types in accordance with the setting of the numeral keys, side by side in a common printing plane, a rotatable platen, a pivotally mounted support in which the platen is journalled, meansconv trolled by the general operator for rocking the support to move the platen to and from the printing plane for taking impressions from types positioned in said plane, means for supportinga roll of paper adjacent the pivotal axis of the platen support and parallel therewith, means for guiding paper from the roll over the platen to .move with the platen to and from the printing plane, and line-spacing means operable upon an actuation of the general operator for rotating the platen to unreel paper from the roll.

24. In an adding and listing machine, the combinationof a general operator, a platen, a platen support shiftable by thegeneral operator to and from an impression taking position, numeral types, type-selecting numeral keys, means whereby types corresponding with actuated numeral keys are presented side by side in a common impression-taking plane and restored after taking of an impression therefrom through actuation of the general operator, means for feeding an inked ribbon between the impression-taking plane of the types and the platen comprising ribbon feeding dogs mounted on the stationary framework of the machine independently of the platen support and operable by shifting movements of the platen support, and line spacing means comprising a line spacing dog mounted on the stationary framework of the machine independently of the platen support and operable by the shifting movements of the platen support for advancing an impression taking piece over the platen.

25. In an adding andlisting machine, the combination of a mainframe, numeral keys, types mounted on the main frame and settable at a common printing line in accordance with the setting of numeral keys of the machine, a rocking platen support mounted on the main frame, a platen journalled on said support, means mounted on the main fra'me'for rocking the support to shift the platen toward and from the set types for taking an impression from the types, means on the platen support for guiding a work-piece over the platen to move with the platen against set types, means for rotating the platen to line-space the work-piece operable by the platen support, and comprising a pawl pivoted on the main frame and a ratchet wheel held to the platen and rotatable by said pawl, and means for feeding an inked ribbon between the platen and set types oper-' able by the platen support and comprising pawl and ratchet spool rotating means mounted on the main frame. 1

26. In an adding and listing machine, the combination of a main frame, numeral keys, types mounted on the table at a common printing line in accord ance with the setting of numeral keys of the machine, a rocking platen support mounted on the main frame, a platen journalled on said support, means mounted on the main frame for rocking the support to shift the platen toward and from the set types for taking an impression from the types, means on the platen support for guiding a work-piece v over the platen to move with the platen against set types, means for rotating the platen to line-space the work-piece operably by the platen support, comprising a pawl vpivoted on the main frame and a ratchet wheel held to the platen and rotatable by said pawl, means for feeding an inked ribbon between the platen and set types operable by the platen support and comprising pawl and ratchetv spool rotating means mounted on the main frame, and means on the main frame for main frame and setsupporting a reeled, unset supply of the workpiece adjacent the pivotal axis of the rocking platen support for unwinding by the linespacing mechanism.

Intestimony whereof I hereunto aflix my slgnature.

GLENN J BARRETT.