US1325803A - rinsche - Google Patents

Description

F. C. RINSCHE.

. ADDINGMACHINE.'

APPLICATION FILED JAN. I?. i916.

RENEwED'M/w 15,1919.

Patented ma; fs WMMEVS F; (I. INNSCHE.

ADDiNG MACHNE.

ILED JANz i? x 191G HENEWED MAY 15| NL.

APPLICATON @gammadi Bw 239 MIS.

5 SHEETS- SHEET 3.

\F. C' RINSCHE.

ADDING MACHINE. APPLICATION FILED IAN. II, Ire. RENEWED IIIAY I5, 1919.

' atented Deo. 23, 1919.

i? UMH/VHS F. C. RINSCHE.

ADDING MACHINE. APPLICATION FILED 1AN.17.1916.

RENEWED MAY 15| 1919.

7 0@ F ,2 mu.

Patented Dec.. 23

5 SHEETS-SHEET 5- UNITED STATES PATENT OFFICE.

FRANK C. RINSCHE. OF DETROIT. MICHIGAN, ASSIGNOR TO BURROUGHS ADDING- MACHINE COMPANY, OF DETROIT. MICHIGAN. A CORPORATION OF MICHIGAN.

ADDING-MACHINE.

Specification of Letters Patent.

Patented Dee. 23, 1919.

Application filed January 17. 1916. Serial No. 72.482. Renewed May 15. 1919. Serial No. 297.413.

le it known that I. Fnask t. Itisscnr.. a citizen of the I`nited States. residing at Detroit. in the county of 'ayne and State. of .\lichigan. have invented certain new and useful Improvements in A\dding-.\Ia chines. of which the following is a specification.

The present invention relates particularly to the equipment of an adding and listing machine for facilitatingr thehandling of ledger sheets and the like. In a prior application tiled September 19. '1914. Serial No. 862.593. I have shown, described and claimed an equipment of this soit which involves the employment ot` a platen in the form ot a segment of a c vlinder. in place of the customary roller platen. The platen of this prior construction is relatively flat., the object heilig to provide for printing upon it by ordinary printing mechanism of an adding lnachine. without so far bending the inserted sheets ats to atl'ect the flat form in which they must be handled. rl`his same characteristic. is present in the improved construction ot' this application though I have found it practicable to employ a segmental platen of shorter radius and I have adopted such in the present instance to inf sure clean and sharp printing under a rearrangement of the printing mechanism of the machine proper by which provision is. lnade for visible" printing. ln this saine connection I now dispense with the mounting of the segmental platen in a cradle. or rocking lsupport. and mount it in fixed bearings upon the laterally shiftable carriage of the machine. .\ccording to the general plan of my prior invention. the plat-en ot the present .construction isarranged to swing up and down and the sheet to be printed upon is placed in position upon the platen wlien the latter is in its uppermost position. and the platen lis then lowered to the proper position for printing upon the top line of the sheet and is afterward fed 4up step by step as the work proceeds. with or without intervening columnar ldrifts of the carriage. In the prior eonstrllction the clamping Iof the inserted sheet inI position against thc platen was accomplished by separate manipulation of a clamp-handle. In the present instance clamping ot the sheet is done automatically as a incident to the lowering oi' the platen, and correspondingly the unclamping and release of the sheet for removal occurs automatically as an incident to the rise of the platen to its uppermost position. For tley purpose of regulating the extent of lowering the platen to the proper initial position to suit the work in hand, I provide an adjustable stop which can be Set at any location desired within a large range ot' movement so as to definitely insure uniform positioning of inserted sheets according to linear requirements of the accounting work in hand.

further departure from the. prior construction is to be found in the mechanism -t'or line-spacing. Instead of employing gear wheels in mesh with racks on the back of the platen and applying ratchet and pawl action to the gear wheels. I mount a segmental ratchet on the back of theI platen and I employ a reciprocating pawl which is normally held in engagement with the ratchet by a spring. I also emploi a retaining pawl likewise held in engagement with the ratchet by a spring. and. as a matter of increased facilities t'or manipulating the platen. I provide. a third pawl to engage the ratchet so that manual line-spacing of the same may be had at will: it being understood that the first mentioned pawl isreciprocated through mechanical connection with the. operating mechanism of the machine proper. These several pawls must of course be disengaged from the ratchet when the platen is to be lowered. and I make provision for simultaneously disengag'ing them by a manual act easy and convenient of execution by the lingers of the hand ofy the. operator while grasping a handle by which the platen Vis lowered. This same handle serves for elevating the platen independently of the linespacing mechanism. and I further utilizel it in connection with lateral positioning 0f the platen. Thus through the same connections by which the above mentioned pawls are disengaged from the ratchet, I provide for throwing oft the tabulator stops carried by the laterally shiftable carriage as usual, so that the operator. haring grasped the handle and applied linger Lpressure to said connections, may then shift the carriage any extent desired without obstruction by the tabulating devices. I preferably provide a settable element in the throw-off connections so that when desired, as when the machine.- is being used for mere list-ing or vsingle cif mounted upon a machine, av portion ofwliose casing appears in section together with some of the internal mechanism in elevation; Figs. 2 and 3 are enlarged detail sectional views taken on lines 2 2, 3 3 of Fig. l; Fig. 4 is an enlarged detail sectional perspective of parts at the left of the platen; Fig. 5 is a rear elevation with some parts broken away and in section; Fig. (3 is a perspective view looking from the rear and showing parts at the right hand side of the platen; Fig. 7 is a vertical section taken on the line 7 7 of Fig. 5; Figs. 8 and 9 are sectional details taken 4on lines 8 8 an,d

9 9 of Fig. 7; Fig. 10 is a vertical section taken'on the line 10 1(l of Fig. 5; Fig. 11 is a partial left side elevation; and Fig. l). is a similar view illustrating the elt'cct ot elevating the platen beyond the position shown in Fig. 11.

lReferring first to Figfl, the reference tigure 611 designates one of a' series ,of levers on the order of those so familiar in the Burroughs adding and listing machine, which levers carry the adding racks at their for'- ward ends, and the printing types at their rear ends. In theI present instance these levers do not have type-carrying segments integral with them, but they have, studs which occupy slots in vertical type-carrying bars 612, each bar.liaving a. series of yte'n types G18 suitably,mounted in a housing at the uppervend of the bar. The purpose of departing in this way from the usual arrangement in .'l Burroughs machine, is to prox/ide for visible printing.; Thus the type-carrying. bars are adapted to be projected upward through an opening in thel top ot' the machine, and after the printing has been done, these bars retreat to expose the iinprint. inasmuch as this modification does away with an arcuate airaiigeiiieiit of types, l find it desirable to shorten t-lie radins of the segmental platen, as compared with that of my prior construction which was designed for use with the standard Burroughs niachine. 'llie platen is designated by the nuineral 2 and is composed ol a sheet of metal,

'rubber faced. similar sheet of metal w'as confined in curved ln my foi-nier construction a guides mounted upon the cradle of the laterally shiftahle carriage. In tue present instance the platenhas radial arms 2 whicl unite in the split hubs 2b, clamped upon a tubular shaft 2, which is suitably jouriialed between the side pieces 3 of the laterally shiftable carriage. in the customary way upon the haclcof the machine. @The numeral 4 designates the custoniary track on which the carriage i-iiiis. 'Ihenuineral 5 designates the hinged back The latter is inonnted panel of the machine casing'to which the 75 track is secured. Adjustment for the purpose of securing the right spacing of the platen from the type is provided for by the hollow screws 5 on said panel and locking screws 5" ruiming through the hollow 80 screws and into bosses on the machine frame. oai. ai

The segmental platen is adapted to oscillate between limits about theaxis of its )ourof its size and its weight and that of various parts it carries, I preferably employ a counterbalancing spring 7 lwhich is .coiled about the hollow shaft 2c at the right hand .nal-iiiouiiting in the carriage, andv in View end thereof as the parts are seen in Fig. 5,

said spring being anchored at one end in the adjacent side piece 3 of the carriage, and engaged at its other end'witli an'arni 2d which is fastened to the said shaft. The

only function of this spring is to counterbalance the weight tending to lower. the platen. Normally the platen would be up'- lield by the pawls hereinbefore mentioned which engage the ratchet on the platen (all of which parts will be specifically identified 10o later on), but it is desirable that the platen with the parts carried by it, `aggregating considerable' weight, he not at any time free to drop, entailing shock and danger of possible' damage to the machine. 105

Referring next to the matter of iiitroducing the sheet to be printed upon, and gaging that sheet and clamping it in proper position; there extends acrosstlie full width ol the platen at the lower edge thereof at the fiont side, a `plate oi' bar S, which is formed with hinge ears receiving a pintle 9 also engaged with hinge lirackets fastened to the platenI (Fig-5). Said plate is bent at righ!- Aangles to forni a. hoiizontal shelf or ledge 8 just below he botloni edge of the plat-cn.

A flut portion S" of sa-id plate 4extending Y.

vertically from the ledge, and being'of appreciable height, -constitutesl a clamp for holding a sheet of paper securely against the, face of the platen when said sheet has4 been dropped llici'eover and rests upon the. ledge. Referring to Fig. l2,` the hinged plate or bar is there shown thrown forward to receive the shcct S dropped over the face ol the platen. 'l`h e plate oi bar is so held in opposition to a spring (presently identified) which lends to swing it rearward to the position shown lin Fig. ll, and also iii Figs. 7 and ln Fig. t the condition is movement of the platen.

the saine as that representtal in Fig. 1'2. .\t its let't hand side the plate has a re:u'\\ardl-v turned ear to which is pivotally ronneeled a link l1. This link extends rear\\'ardl and is pivotally eonneeted to one arm ol a hell eranklever 12 pivoted upon the hetore meutioned arm 2".

A spring 13 coiled around the hub ol' the, bell-crank lever 12 serves lo throw the. gaging' and elamping plate rearward. said spring heilig auehored at ont` end in the hellerank lever and at the other in arni 2, It willbe reealled that the latter is lixed lo the platen hub 2". llenee, in the absenee ol :mv interfering factor, the bell-crank 12 and link 11 would simply more with the platen and have no individual movement ot' their own. in which event the condition would always be that illustrated in l"ig. 11, and that is the condition whenever printing is in progress 0x' the inserted sheet i in readinessl lo be printed upon. llower when the platen is in its uppermostposition the clamp must be open ready to receive a sheet. as in l"ig. l2, and here otheneleineuts come-into play, A bell-crank lever 14. pivoted upon the left -hand side of plate 3 of 'the carriage, has a yrearwardly extending arm with a Contact head 14 to operate uponthe forwardly extending arm of the. bell-crank 12, and a forwardly and upwardly extending arm torna-d with a hump 14" adapted to cooperate as a eam with a roller 2f on the side of the platen. The latter has a series ot reinforcing ribs running up and down its baek and the roller` iseonveniently mounted upon theleft hand one ot these ribs which is designated 2g. When the platen is nioved upwardly beyond the lastaposition in which printing is done. .sa-id roller operates upon tlie cam-hump 14", roeks the bell-crank lil. and thereby the bell-erank 12. so that the. latter thrusts forward link 1l and the gage, and clamp plate is swung forward to release the sheet or make ready to receive a sheet dropped over the laee ot' the platen. The bell-Crank 1J@ is limited in its movement by a stud 3 on the. carriage side-plate (lfig. 10) and, besides serving as a elamp-opening medium, also serves` to limit. the upward To this end the extremity of the upwardly extending ariw 0f the. bell-crank takes the torni of a hook 14 in which the roller 2r seats as shown in Starting with the condition illustrated in Fig. 12, the sheet S is dnopped over the Jaee of the platen and lands upon thel gage and clamp-plate, the edge of the sheet seatingl in the angle of the ledge 8 and the. elanipplate S". This squares the sheet so it. is immediately ready tobe elamped against the. twee et the platen. Upon lowering the lalter, and betere or just as it reaehes a position where the lowermost line for printingeenxz's opposite the type, the roller 2f passes down beyond the 'cam-hump 14" and the spring 13. at onee throws the, gage and clamp-plate' rearwardly and the sheet S is securely elaniped against the fare ot the platen while still resting' squarely upon the ledge S", as clearly illustrated in Figs. 7 and 10. l

utilize the forward portion of the link 11 asa side-edge gage for the sheet by extendingr ii above and below the point of pivotal eon` line. I utilize the lower arm of the bellerank lever l2 for such purpose. the end of the said arm being adapted to wipe past the nose of the trip pieee of a bell mechanism of familial' eharaeter mounted -upon the side plate of the carriage. Such sheet-end warning bell mechanisms are so Well known in this art that it is unnecessary to deserihe in detail that herein Shown. The bell is vdesignated by the numeral 15 and the relation of its striker mechanism to the bellcrank 12 may be surh that the warning will be given when the platen rises to'a position two lines short of the final printing position.

Referring' next to the matter otadjustably limiting the lowering ol the platen, there. is secured to the rib 2 ot theI latter a stop-piece. 2 Fig. 5 whieh is adapted to abut against the laterally-turned end-portion 1(5 oi an areuate bar lt extending along side the, earriage side-plate 3 and integral with a radial arm 1W' journaled upon the rod 3 about wliieh the tubular shaft 2 or platen-hub turns. said rod being' suitably fastened in the carriage side. plates. rI`he arcuate bar 1G is slotted throughout the greater portion ot' its length and a stud 25 on the side plate. il oeeupies the. slot and receives a thumb nut 17 by whieh'the said arcuate hlar can be elamped in any desired position. Obviously this provides for setting the bar to limit the deseent ol the platen to suit. the work in hand. 'l`he adjustment lixes the uppermost printing 4line. aml where a number of sheets are in use ralling for uniformity in this regard. or the saine'sheet is to be. inserted repeatedly for printing in di'lt'erent columns be; ;inning along the same line` uniformity in this regald will be insured without the operatorsI being eaii-l'd upon to give elose attention to adjustment of the platen each time.

Besides the provision of the clamp-plate to secure the lower end ot' the sheet, it is desirable to supply means for laying the sheet smoothly back over the face of the platen,`and it is Imrticularly desirable that the sheet be held closely against the platen at the printing point. A thin/vertical plate 5 is secured to back panel 5 of the machine, and extends closely adjacent the platen along the print-ing line. being cut out at the middle of its upper edge ii a width correspoiuliuj..r to the cross-wise line of type. The inking ribbon :0 interreiu-s, as shown in Fig. l, spanning this eut-out portion ot said plate and extending above the, latter, it being understood of course that the type normally stand below the printed line. As the platen lowers from its uppermost position, the, sheet is first carried past the upper edge of this thin plate l. A short distance below the top edge. of said plate, the --top edge of a curved plate 22 meets the rear face of plate 5 as clearly shown in Fig. lt). said'curved plate conforming with the, platen `and extending in proximity to the face thereof. This curved-plate is fastened to the carriage and extendcoxisiderably to the rearthereof so that. a\jhen the platen is in its lowermost position the clamp-plate 8" is just beyond the rear edge of the curved plate \\'hich.is.slightly downturned as shown in Fig. T to avoid any possible. interference with the clamp. A pressure roller :23 occupies a eut-out portion of the latter plate at its rear edge, as shown most clearly in Fig. 5, and is vadapted to bear against the platen when so lowered, and a similar pressure roller '2t occupies an opening in the upper forward portion of the plate. These tw'o pressure rollers are supported icsqwetirely in pairs of arms 2,5 piroted to brackets Afastened on the underside of said plate said arms heilig connected together by springs .t which press the rollers against the platen. ln addition to the above described means for laving the sheet. back over the, platen and holding it flat against' the same. there is preferably located at the opening in the machine through which the type rise', a yoke 30 pivoted to brackets 5" and spritig-pressed rearwardly so as to exert pressure upon the paper ou both sides and above the area in' which\ the printing ishdone.

lassing now to the means for line-spacing, which involves propelling the platen step by step upward. there is secured against theback ot the platen ,at the. right hand side iuward from itshuirgiu a ratchet segment 40, as best shown in Figs. fraud (i. The reference number -ll designates the pawl which operates upon this ratchet .to automati ally etl'ect line-spacing in conjunction with operationot`- the adding machine. This pawl is pivote-d upon a short crank arm 42 secured to a rock shaft 43 which has another` short crank arm it secured to its opposite or outer end.. A link l5 connects the crank arm lt with a slotted crank plate 46 of' familiar character, said plate being secured to the rock shaft 48 of the line-space bail which is so familiar in this class'of machine as to re( nire no specific description. It is oseillatetl by the prime mover ot' the niachine, through connections of the usual eharacter, and it will be obvious that the pawl 4i will he rcciprocated4 through the described connections between it and said hail. Spring 4S) enforces engagement between the pawl and the ratchet. The rock shaft 43 is preferably journaled eccentrically in a bearing 5() adjustably mounted in the carriage side plate 3 as shown in Fig. Q, so as toprovide for insuring the proper coaction between the pawl and the ratchet. At the lower part; of the ratchet segment; there a plain surface 40e. best shown in Fig. T, the purpose ofwhich is to stop the line-space action when the' vplaten reaches the uppermost. printing position. It will be understood that when the handle ot' the adding machine is pulled forward. the pawl t1 is vdrawn back over al.. tooth ot' tht` ratchet and then when the ma` chine handle is released and the operation of the machine continues under the power of its main springs, the pawl advances and pushes up the platen. carrying the imprint above the inking ribbon. lt is preferable t0 employ a detaining pawl to uphold the platen during the retraction of the actuating pawl. The reference numeral 5'2 designates such a dctaining pawl which engages the ratchet tooth next above that: which the actuating pawl normally engages. This detaining pawl is secured to a pivot pin or stud 53 iournaled in .a bearing sleeve -fffastened in the carriage side plate 3 as Shown in Fig. 3. A spring 54 connects the pawl with a stud on said side plate to enforce engagement of the pawl with the ratchet.

ln connection with the description of the means for automatically clamping and releasing the sheet, reference was made to morena-nt of the platen beyond the last p0- sition in which printing is done. It-will be understood 'that the sheet should not be released until after the last printing has iso the platen is reached, so as to detain the latter in the uppermost position with the clamp open for the reception of another sheet.

For the purpose of definitely linespacing the platen by hand as occasion may require, I provide a third pawl (30, having a pivot portion (30a (Fig. 3) journaled in the sides of a yoke (31 mounted upon the sleeve bearing 3f. A pin 6:2 running through the pintle (SOLl and a surrounding sleeve G3 which confines the pintle, serves as an anchorage for one end of a spring coiled around the sleeve bearing 3f and secured at the other end to the yoke (5l, said spring enforcing engagement between the pawl (50 and the ratchet. One side of the yoke (3l is extended upwardly and bent laterally to form a handle 6l conveniently located for the application of finger pressure to rock the yoke and thereby line-space the platen by hand. StudY 65 on the carriage side plate occupies a notch in one side of the yoke for the purpose of limiting its rocking motion.

In order to move the platen downward beyond the final printing position, it is of course necessary to disengage the above d escribed pawls from the ratchet. I provide for conveniently accomplishing this and easily maintaining the disabled state of the pawls while moving the platen up or down, all by simple manipulation effected with one hand in a perfectly natural manner. A rod 80, Fig. 6, runs through and is locked to one of the radial arms 2r of the platen, and also runs through the right hand one 2k of the reinforcing ribs on the back of the platen, and out beyond the platen. This rod supports a knob 71 which serves as a handle for raising and lowering the platen. A sleeve 72 is mounted upon this rod to slide between the platen rib 2 and the knob, and this sleeve at the end adjacent'the knob carries a cup-shaped finger pull 7221 so that the operator, while grasping the knob, may readily embrace the sleeve between two fingers and exert a pull upon the same by finger" pressure on said pull-piece. A. lever 73 is pivoted intermediate its ends in a small bracket 21 carried by a rearward extension of the platen rib 2k. This lever has a forkat the forward end embracing the sleeve` 72 adjacent a collar 72" formed thereon. lever has a fork also at its rear end which embraces a sleeve 75 sliding upon tlig platen hub 2c. The inner end of this sleeve Hf's enibraded by the fork 76n ofa bell-crank lever 7'6 pivoted to a bracket 3h fastened to the carriage side-plate Said bell-crank lever is connected by a link "f7 to a crankarm 78 ,m a short rock shaft 79 journaled in a bearilng on the said carriage side-plate. Stud 78 on said crank arm 78 normally seats in the bottom of a notch in an arm 8()b pivoted upon a stud 3 carried by the car riage side-plate. Said arm 80" has a for- Saidv wardly projecting finger 80a, which is turned upwardly and extends in front of all three of the before described pawls 4l, 52 and (i0. A spring connects the crank arm 78 with the frame stud 3i, which spring holds the parts in normal position with the upturned portion of the finger 50a forward of 'the pawls and the finger pull 72 retracted. l pon applying pressure to said finger pull the arm 78 will be pulled upward and its stud 78 will act against the rear side of the notch in the arm 80, and force this arm rearwardly and cause the. finger 80a to press the three pawls out of engagement with the ratchet.

l provide for action of the finger pull l7?. in excess of what is required for disengagng said pawls from the ratchet but without further retracting the pawls, the excess movement being transmitted only to the crank arm 78 whose stud, after operating with the camming effect upon the rear side f of the notch in the arm 80h, may ride upon an upper rnclined edge 80c of said arm. This excess movement of' the crank arm 7 8 and its shaft 7 9 is utilized for the purpose of disabling the tabulator stop mechanism so that when desired the operator, through the use of the knob 71 and finger pull 72a may obtain control of the laterally shiftable carriage for positioning the same independently of said tabulating mechanism. For this purpose there is secured to the outer end of shaft 79 a depending arm 90 which is adapted, during such excess movement, to operate on a pinr9l. The latter runs through the upper end of an arm 92 which is journaled cess movement of the finger pull 72l therefore has the same effect the rocking of the yoke 92 by its own handle 92h, to-wit, the effect of disabling the tabulating mecham nism and permitting full lateral control of the carriage directly by hand.

a inasmuch as it may be undesirable at times to have the tabulator mechanism subject to the action of the finger-pull 72, but desirable to have it left merely to individual disablement by the regular yoke handle 92h, 'i make the pin or stud 91 shiftabie into and out of line with the arm 90. Thus said pin is mounted io slide through the extended side pieces of the yoke 92 and it is notched for coaction with a small detaining spring 95.

Shifting of this pin to the dotted line position illustrated in Fig. 5 would be desirable where the machine was in use for listing or single column work when the operator might, wish to employ the finger-pull for disabling the ratchet and pawl mechanism and swing1- ing the platen up or down, without having to pay any heed at all to the further function of that finger-pull to disable the tabulatina' mechanism, and release the carriage illi Gti

from its certain columnar positionln this connection it may be noted that provision 1s made for carrying' a roll of narrow paper upon the rear side ot the platen and threading it through the clamp and carrying' it up over the face ot the platen. Referring' to Figs. 5 and l0, it will be seen that the rib 2tg and a similar rib 2l provide bearings for a paper roll 97. Broken lines in Fig. 10 show how the paper can be drawn :trom the roll7 threaded through the clamp and carried up over the tace of the platen and under the yclamp plate of a spring-held guide bracket 98, said plate overlying' the upper edge of the platen and being serrated at its rear edge to serve for severing' the paper when desired.

While the above described mechanism ia Well adapted to cz rry out my invention. it must be understood that much modification may be practised within the scope of' that invention, and this is to lie-borne in mind in connection with the claims which follow.

ll claim:

l. ln a machine ot the class described, 'the combination with printing moans, ot a platen facing the same in the form ot a ment of a cylinder mounted to move in an arc of such cylinder, and having a ratchet extending' along its back in rear ot its tace and within its lateral margin, and a reciprocating pawl actingI upon said ratchet to eleyate the platen step by step.

:'2. ln a machine ol the'elass described` the combination with printingv means. ot a platen facingY the name in the Vtorni ot a segment ot a cylinder mounted to move in an arc ot such cylinder, and having); a ratchet extending;r along its back with teeth rearwardly and downwardly directed, and a rev'ciprocatinp' pawl acting' upon said ratchet to elevate the platen step by step.

3. ln a machine oi the class described, the

combination with printing' means, oit a platen facing the same in the torni ot' a seg ment ot a cylinder mounted to move in an arc of .such cylinder, and having'a ratchet extending; along` its back, a reciprocating pawl acting upon said ratchet to elevate the platen step by step, and a handle and connections operable to disengafre the pawl from the ratchet and to serve tor directly positioning the platen by hand.

l. ln a machine of the class described, the combination with printing means, ot a platen facing the same in the form of a sep;- ment oi a cylinder mounted to move in the arc ot such cylinder, and having' a ratchet extending along its back, a reciprocating pawl. acting' upon said ratchet to elevate the platen Step by step, a prime mover, operating connections between the same and said pawl, and an independent pawl also engag mg said ratchet and equipped for manipulation to effect line-spacing by hand.

5. In a machine of the class described, the combination with printing means, of a platen facing the same in the form of a segment of a cylinder mounted to move in the arc of such cylinder, and having a ratchetextending' along' its back, a reciprocating pawl acting' upon said ratchet to elevate the platen step by step, a prime mover, operat-r imcT connections between the same and said pawl, an independent. pawl also engaging said ratchet and equipped for manipulation to elt'ect lineespacing by hand. and a handle and connections operable to disengage said pawls from the ratchet and serve tor directly positioning` the platen by hand.

ln a machine of the class described, the combination with printingl means, of a platen facing' the same in the form of a segment of a cylinder mounted to move in the arc of such cylinder, and having a ratchet extending' along its back, a reciprocating pawl acting upon said ratchet to elevato the platen step by stcp,ia late 'ally shitable carriage, tabulating stop devices therefor, and a handle and connections operable to disengag'e the pawl 'trom the ratchet and also to release the carriage from the tabulating stop devices.

7. ln a machine ot' the class described, the combination with printing' means. of a platen facing the same in the 'l'.'orin ot a segment of a cylinder mounted to move in the are et such cylinder, and havingr a ratchet extending along' its back, a reciprocating pawl acting' upon said ratchet t-o elevate the platen step by step. a laterally shiftable carriage, tabulating' stop devices therefor, and a handle and connections operable to disen- 2gage the pawl from the ratchet and also to release the carriage trom the tabulating stop devices. said connections including a abilitable member whereby to eliminate the tabulator release action.

8. ln a machine o't the class described, the combination with printing' means, of a platen 'facing' the same in the torni o a seg.

ment of a cylinder mounted to move in the arc ot such cylinder, and having,` a ratchet 135 extending' along; its bacl a reciprocating pawl acting' upon said ratcnet to elevate the platen step by step, a 'laterally shittable carriage, talonlating devices therefor, and a handle and connections operable varying extents, to disengag'e the pawl from the ratchet and by further movement-to release the carriage trom the tabulating stop devices.

t). In a machine of the class described, the combination with printing means, of a platen lacing' the same in the form of a Segment oli' a cylinder mounted to move in the are of such cylinder, and having a ratchet extending along its back, a reciprocating :menace pawl acting 'upon said ratchet to elevate the platen step by step, a knob on the platen, a linger pull adjacent the knob, a pau/ldisplacing member, and operating connections between the latter and the finger pull ,een

Y tcred about the hub of the platen.

10. ln a machine ot the class described, the combination with printing means, of a platen 'facing the same in the form et a segment ot'a cylinder' mounted to more in the arc ot such cylinder and having` a ratchet cxtemlingalong` its back, a reciprocating" pawl acting upon said ratchet to elevate the platen ,step by step, a knob on the platen, a linger pull adjacent the knob, a pani-displacing member, operating con* ncctions between the latter and the linger pull centered about the hub of the platen, a laterally shittable carriage, a tabulaton stop-rod thereon, and means for rocking the rod operable by the aforesaid linger-pull connections. i

l1. rThe combination of an opentop casingr type-carriers adapted to rise rectilinearly through said top to bring their type to the printing? line and then retreat to leave the imprint visible, aplaten in the form of a segment ot' a cylinder mounted or posite the type-carriers and nlovable up and down in an are, means for positively limit ing its movement in both direct-ions. and

means for reccivina' and holdine un a sheet against the face ot the platen.

12. rlhe combination of printing mechanism; an oscillatory segmental plate means for supporting and clamping` a sheet thereon; and means tor automatically operating' the clamp as an incident to oscillation et the platen.

13. rlhe combination of printing mechanism; an oscillatory segmental platen; a support and clamp tor the bottom edge of a sheet overlying the platen; and means operated by the platen in its oscillation to open and close the clamp.

l-l. 'lhe combination ot' printing mechaN nism: an oscillatory segmental platen.; a ,support iand clamp plate hinged to '.l c platen and adapted to supply a ledge for the sheet to rest upon and a means for clamping' it against the face olE the platen; and means operated by the platen itself tor rot-king said plato.

l5. The combination ot printingr mecha nism; an oscillatory segmental platen; a support and clamp plate hinged to the platen and adapted to supply a ledge tor the sheet to rest upon and a means for Iclampingl it against the face of the platen; a spring tending to close the clamp; and means operated directly by the platen for opening' it. A

lf3. The combination ot printing; mecha nism; an oscillatory segn'iental platee; a support and clamp plate hinged tothe plat and adapted to supply a ledge for the sheet to rest upon and a means for clamping it against the tace of the platen; a' springactuated lever adjacent the hub ot the platen; a link connecting said lever with the clamp-plate; and a lever to operate upon the tiret-mentioned lever and itself operated upon by the platen.

l?. The combination of printing mechanism; an oscillatory segmental platen; a snp--` port and clamp plate hinged to the platen and adapted to supply a ledge for the sheet to rest upon and a means tor clamping` it against the face ot the platen: a springactuatcd lever adjacent the hnbot the platen; a link connecting' said lever with the clampplate; a cam lever arranged to operate upon the tiret-mentioned lever; and a stud on the platen for actuating the canrlever.

lll. rif'he combination oli printing,n mechanism; an oscillator-y segmental platen, means for receiving` and upholding a sheet et paper hei-ecn, means for uniformly lin'iiting'the upward movement et the platen, and means for adjuetably limiting` its downward move ment,

19. The con'ibination ofprinting mechanism; an oscillatory seen'iental platen, means for receiving and uplu'ildiiig a. sheet ot paper' thereon, meant` it'or uniformly limiting the upward.increment ot ythe platen, a. stop" 'nan pivotedaconcentrically with the platen" and having' a slotted arcuate portion; and a tlnnnb screw to hold the latter at diil'e'rcnt positions; saidetop arm. having a terminal portion to coact Lwith. a Stop projection On tbe platen.

20. .in a machine of the cla'tasaieecribed, the combination with printing means, of a platen. facing,` the same in the :torni of a segg-- ment ot a cylinder .mounted to more in an arc o such cylinder, and having' a ratchet extending` alone; its back with a plain terminal edge for causing' cessation of line spacing, a reciprocating' pawi actingl upon said ratchet to elevate the platen step by stew zncans for supporting` and clamping a sheet on the platen', and miane l'or opening; the clamp by upward movement ot the platen beyond the la'st position to which said pawl elevates it.

2. ln a machine et the class del-scribed, the combination with printing means, of a platt-znA facing the saine in the term ot' a Scgment oi.E a cylinder mounted to more in an are of such cylinder, and having' a ratchet extending along its back' 'Vith a'plain terminal edge for causing cessation of line spacing and a supplementar y notch beyond said edge, a reciprocating awl actiney uponsaid ratchet to elevate the p aten step by step, means for supporting and clamping a sheet on the platen, and menne tor opening the clamp by npwerd movement ot the platen beyond the last pozntion 'Winch eine. pawl. eleretes it9 lili

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