USRE17483E - Typewriting machine - Google Patents

Typewriting machine Download PDF

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Publication number
USRE17483E
USRE17483E US17483DE USRE17483E US RE17483 E USRE17483 E US RE17483E US 17483D E US17483D E US 17483DE US RE17483 E USRE17483 E US RE17483E
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United States
Prior art keywords
platen
web
carbon
racks
carbons
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J17/00—Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper

Definitions

  • This invention relates to f'ronbstrike typewriting machines equipped for typing upon multiple-ply webs, the same being either fanfolded or consisting of loose plies.
  • plies are usually interleaved with sheets of carbon, which are usually long enough to cover only one or two forms.
  • the carbons are stripped from each form after it is typed, and shifted to the succeeding form on the web.
  • An object of the invention is to avoid the delay and trouble that is usually experienced in. round-platen typewriters of displacing the platen upwardly for this purpose, that is, toenable the carbons to be stripped successfully without displacing the platen, and in fact while the composite web remains looped around the platen, and to effect this resultby means of simple, inexpensive devices whieh are readily attachable to a standard typewriting machine, thus avoiding the necessity of partially rebuilding the same.
  • An object of the invention is to provide an light device for stripping the carbons, of such a character that the stripform to the fresh form on ping device and the web-presenting devices can be attached directly to the typewriting' machine, or to the. carriage thereof, with little or no alteration therein, and may be easily and rapidly manipulated.
  • the outermost carbon may be stripped from the typed form tothe next form, and therefore no longer binds upon the inner carbons. Said outer carbon strips easily and readily, because there is no carbon or sheet binding thereon. Then the next outer carbon may be stripped from the typed form to the succeeding form, and moves easily, because the outer carbon has been shifted back from around the platen.
  • the third carbon may be shifted in like manner, and then the fourth, and so on; each carbon shifting readily because it is not bound by any other carbon.
  • the leading end of the web may be clamped or fastened to'the machine, preparatory to stripping the carbons.
  • the feedrolls are cast oil from the platen, thus releasing the web, and the outermost carbon is pulled back around the platen and retracted to position in register with the next form on the web. It will be understood that since no carbon surrounds said outermost carbon, there is nothing to bind upon it, or to hold it against the work-plies, and it will slip readily back around the platen. Then the next carbon (which has in its turn become the outermost one) is stripped back easily, since there is no exterior carbon-sheet to bind thereon.
  • the leading end of the web may be advanced to bring the bottom edge of the just-typed form up to a web-severing knife; a severing gage being provided for the leading edge of the web.
  • Each stripper or carbon-carrier is preferably in the form of a transverse bar having at its ends bent-up ears; and in these cars there are journaled transverse horizontal rock-shafts, each rock-shaft carrying pinions at its ends.
  • the pinions mesh with station ary racks, a pair of which extends upwardly and rearwardl from the rear end of the usual paper-table and carriage of the Underwood standard typewriter. Hence each stripper moves back and forth in parallelism.
  • the strippers may be moved by hand, and preferably they are provided with fingerpicces at alternate sides of the machine, so that the left hand may move the outer strip, and then the right hand may move the next, and the left hand the next, and the right and the next, and so on, so that the stripping may be readily effected.
  • the first stripper is connected by individual springs with each of the remaining strippers, all of these springs being tensioned at the operation of retracting the first stripper, and thereafter advancing or tending to advance the remaining strippers,
  • Figure 1 is a diagramatic sectional side elevation, illustrating the completion of the typing of a form, the leading end of the 1111921113 Of an axle form having been advanced to a strippergage. In this and other views, the points of division between each printed form and the next are indieatedby short dashes inter secting the web.
  • Figure 2 is a sectional central elevation on a larger scale, showing the leading end of the web as having been clamped, the feedrolls released, and all of the carbon-strippers retracted.
  • Figure 3 is a view similar to Figures 1 and 2, but showing a later stage.
  • the web is shown as advanced to the websevering gage, and the next form, with the interleaved carbons, is in position to begin typing thereon.
  • the leading form is shown as being torn olf by the knife.
  • Figure 4 is a rear or bottom View of the strippers and racks.
  • Figure 5 is a front view of the platen and platen-frame, with the delivery table, websevering knife, etc., and showing the leading end of the first form set up against the stripping and under the clips, to hold the work-web fixed while the carbons are being stripped or shifted between the workplies.
  • Figure 6 is a semi-perspective view, looking rearwardly and downwardly upon the platen and the stripping mecl1anism,-showing the strippers in their retracted positions.
  • Figure 7 is a cross-sectional View corre sponding to Figures 4 and 6, and showing the racks in section, also a stripper, with a pinion-shaft and carbon-blade.
  • This View incidentally shows the stripper in inverted position, because it is placed below Figure 6; but it will be understood that if placed above Figure (5 it would appear withthe carbonblade at the top and the pinion-shaft at the bottom of the view.
  • types 10 strike against the front side of a platen 11, which is 'journaled by in a platen-frame, which comprises ends 13 joined by a rear papershelf 14, which inclines downwardly and forwardly and-curves under and up in front of the platen.
  • This platen-frame is usually shiftable up and down upon a paper-carriage 15, which is guided upon tracks 16 supported on the framework of the machine 17.
  • the bar may be mounted by means of brackets 21 011 the rear ends of two rack-bars 22, 23, which extend dowrnvardly and forwardly to the papershelf 1 1.
  • the rack-oars are connected by a transversetierod 24; the parts 19, 21, 22, 24 and 25 forming a ri id frame. It will be seen that 25 eonsists'of a pair of brackets Which are rivavoid overweighting the carriage; but it is obvious that a tablemay be supplied if desired.
  • This rack-frame is detachably mounted upon the typewriter-carriage.
  • split-pointed spring-studs 27 are inserted in sockets formed in ears 28 bent up from a bracket 29. which is secured by screws 30 upon the rear bar of the typewriter-carriage 15.
  • screws 30 upon the rear bar of the typewriter-carriage 15.
  • Theblades in section have an echelon relation at Figure 2, the outermost carbon being connected, to the first or rearmost blade, the next carbon to the next blade, and so on, the innermost carbon being connected to the lowest blade, which is the nearest to the platen, and which is the last to be retracted.
  • the heads 34 are secured alternately upon opposite ends of carrier-bars 36, which extend horizontally from right to left, overlying the racks 22, 23, and havingat their,
  • the rack andpinions make a compact, light structure, and are employed to msure that the individual movements of each carbonstripper shall be in parallelism, and that it V shall not :bind or skew, even though the stripper is moved by means of its handle 42 at only one end thereof.
  • the lower end of the first form stands a little below the printing line, and at the point marked 43, Figure 1; and the composite web of work-plies and carbons stands looped around the platen.
  • the leadingends of the web are set up against a gage 44, which may be adjusted up and down upon and along a rearwardly-inclined work-shelf 45, havinga slot 45 for this purpose, and mounted atthe delivery'side of the platen 11.
  • This gage is secured where adjusted by a thumb-screw 46.
  • a pair of clips 47 which may be forced down to clamping position by means of a handle 48.
  • This handle is shown in released position at Figure 1, and in clamping position at Figure'2. It is fixed upon a rock-shaft 49, having a fiat 50, which, when the handle is depressed, permits the springclips 47 to rise and free the work-web.
  • FIG 2 which is just under the bottom of the platen, so that this outer retracted carbon has no purchase to bind upon orsnub the inner unretracted carbons.
  • said carbon-earrien36 is arrested by a stop 54, and'hence there is no pull upon the carbon, and consequently no binding thereof upon the inner carbons, which still remain unretracted.
  • the stop 54 may bc adjusted backwardly and forwardly along the rack 22, and secured by a clamping screw to accommodate different lengths of carbons and forms.
  • next carbon-holder 36 n'lay be thrust backwardly by means of its handle 42, thus stripping the second carbon from the typed form, as this is now the outermost carbon, so far as the platenis concerned; and this carbon-stripper or carrier may he thrust backwardly and upwardly against the first retracted cabon-carrier 36.
  • next carbon is retracted by means of a handle 56 upon its carrier, and then the fourth carbonby means of a handle 57 on its carrier. It will be seen at Figure 4 that these handles are alternately at opposite sides of the machine, permitting the use of the right and left hands alternately, thus saving time and labor in stripping the carbons.
  • adjustable tension-springs 58 may be secured at their rear ends to brackets 59 upon the rearmost carbon-carrier, and in dividually connected at their forward ends to the several remaining carbon-carriers 36. These springs may be tensioned by the backward, pressure of the thumb upon the fingerpiece 52, when retracting the first carbon carrier. The springs which are connected to the nextcarbon-carrier will pull the same rearwardly' Thereupon both of the-retracted carbon-carriers may be held back by means of finger-piece 42. The springs will then pull back the third carbon-carrier, and all three retracted carriers may be held back by finger-piece 56 Then the remaining springs will retract the remaining'carboncarrier.
  • the springs may, if desired, be made much weaker, so as to have .merely the efiect of assisting in the pulling back of the carbon-carriers; that is, the springs may be made to co-operate with the fingers of the operator in elfecting the retraction of the successive carbons.
  • the springs may be adjusted to vary their strength as desired.
  • the carbons are all retracted, their leading ends all stand at the position 32, just under the platen at Figure 2.
  • the leading web-form' whose lower end is indicated at 43, is then advanced by pulling the same up by means of its leading end, after the clips 47 have been released by pulling down the handle 48.
  • said leading endof the typed form is lifted out from under the clips and advanced by hand against a gage 60, which is adjustable along astaff 61 extending backw-ardly from the top of the gage 44, the gage 60 being secured by a thumbscrew 62.
  • the leading end of the typed form is shown as adjusted to' this .gage 60, thus bringing the succeedlng form (whose bottom end is indicated at 63".
  • the first form may be torn off, by the aid of knife 64 asseen at 69, Figure 3.
  • the feedrolls 51 may be then restored from their released positions to their effective positions, asseen at Figure 3, and the typing of the second form may proceed.
  • the rack-frame may be detached by pulling out the studs from the sockets, and together with the strippers thereon and the composite web, said rack-frame may be temporarily laid aside, while another rack-frame having its own set of carboncarriers through which another web is threaded may be attached to the machine by inserting the studs in the sockets.
  • the machine is readily adapted to perform work upon diflerent composite'webs selectively, without disconnecting any web from the carbon-carriers through which it isthreaded, thereby meeting a well-known requirement in this art.
  • the delivery work-shelf 45 can be swung forwardly anddownwardly upon a hinge at 63, thereby forming a convenient table, and also giving convenient access to the leading end of the work-web when it is desired to load the carbons or insert the blades with their attached carbons between the plies of web.
  • the blades may thereupon be attached to the carbon-carrier heads by inserting the usual dowels in the usual sockets.
  • This work-shelf 45 is hinged to a frame which includes standards 64 having flanges or feet 65 detachably mounted by screws 66 upon said platen-frame, and also including an inclined plate 67, to which the knife 64 is attached, and supporting flanges 67
  • the folds of the webs may be split by blades 68 on' the ends of the carbonstrippers.
  • one feature of the invention is the provisionof a compact stripper foreffecting the necessary shifting between the web-plies and the carbon in linespace direction.
  • novel compact stripper to form one of a set of independently-movable strippers or carriers, and their compactness may conduct to economy of carbon, since the excess in length of the longest carbon over the shortest isnot very much, inasmuch as the distance from the top stripper to the bottom stripper (Fig- 'ure 6)'is kept at a minimum by the use of the compact strippers.
  • the compact stripper is not limited to this use, however, and it will be seen that the stripper has the form of a sheet-carrier and that it is rendered compact by forming it in the shape of a cross-beam which extends horizontally from one track, at one side of the web, to the other track at the other side of the web, and has bearings upon both tracks, while the crossbeam, bar, or truck 36 depends upon its pinions 40 and shaft 39 to maintain it in parallelism with the platen by co-operatioh with stationary racks 22, with which the pinions mesh.
  • the pinions which occupy little space, travel with the truck, while the racks, which are very long, remain stationary or non-traveling.
  • the relative stripping movement is effected between the plies of work-web and the interleaved carbon with the platen in normal printing position. (the. moving member being pulled around the platen at the stripping operation), the stripping means including the releasable clip 47, which is outside of the There is illustrated the to said strippers and movable relatively to said tracks, for guiding said strippers in parallelism.
  • each carbon stripper including a slide and a carbon-blade, and means individual to eachy stripper for guiding the same in parallelism, said guiding means including a set of transverse rotative shafts having at their ends means to engage and control the ends of the strippers.
  • each shaft having pinions to engage the racks to cause the stripper to move in-parallelism.
  • releasable clips connected .to said. gage to be adjusted therewith and effective to detain the web during the retractioh of the carbons, a leading-edge gage connected to said adjustable stripping gage for setting the web to position to begin the typing of the first line on the next form, and a severing knife in position to sever the web. when positioned against said leading-edge'gag'e, said leadingedgegage adjustable independently of the stripper-gage.
  • the combination with a revoluble platen and a platen-frame or carriage means upon which carbon-strippers are mounted for movement independently of each other downwardly and forwardly at the intake side of the platen, of a work-table at the delivery side of the platen and extending upwardly and rearwardly over said carbonstrippers, said work-table including a portion which is movable with respect to the platen out of theway to afford access to the web and carbons and the carbon-strippe zs 23.
  • the combination with a revolulble platen and a platen-frame or carriage, in which carbon-strippers are mounted for movement independently of each other at the intake side of the platen, of a worlttable at the delivery side of the paten and extending upwardlv and rearwardly, said work-table including a portion which is hinged to be temporarily swung forwardly .strippers for guiding each of them on the tracks in parallelism.
  • a web-manifolding attachment for a revoluble platen typewriting machine having a platen-frame, including a supporting frame extending tangentially of the platen upwardly and rearwardly therefrom, means for detachably mounting said supporting frame on the rear of said platen-frame, and a multiplicity of individually movable carbon-strippers mounted one behind another on said supporting frame, the rearmost stripper constructed to carry the outermost carbon, and the foremost stripper constructed to carry the innermost carbon.
  • a front-strike typewriting machine the combination with a platen and a letterfeeding platen-carriage, of means for effecting relative stripping movement between work-plies and a carbon while the plies and carbon are retained in the machine, including parallel tracks fixed fupon said carriage and extending upwardly and rearwardly from the platen, a compact sheet-carrier in the form of a truck mounted for up-and-down move- Incnt upon said tracks, racks fixed upon said traclts, one rack for each of said tracks, said truck in the form of a cross-beamprovided with en'd bearings that run upon said tracks, and a shaftupon said truck and having fixed thereon pinions meshing with said racks and traveling with said truck, one pinion for each rack, the truck being dependent upon said pinions to maintain it parallel with the platen.
  • allel tracks extending upwardly from the platen, said truck being in the compact form of a cross-beam. guided at its ends upon said tracks for up-and-down movement, stationary racks upon said tracks, one rack upon 5 each track, a shaft upon said truck and hav ing connected pinions meshing with saidracks, one pinion for each rack, said truckbe ing dependent upon said pinions to keep it in parallelism with the platen, and means to restrain the truck against dropping. 29. In a front-strike typewriting machine, the.
  • a truck in the form of a cross-beam mounted upon said tracks for up and-down movement thereon and extending across from one track to the other, and having bearings upon said tracks, stationary racks upon said tracks, one rack for each track, and a shaft upon said truck and having pinions meshing with said racks, one pinion for each rack, said'truck being dependent upon said pinions, shaft and racks to keep it in parallelism. with said platen.
  • a compact stripper in the form of a truck mounted upon said tracks and having pinions thereon meshing with said racks, one pinion for each rack, said truck in the form of a cross-beam guided at its ends upon said u tracks, meansupon said truck to connect said said pinions to maintain it parallel with the platen, and a handle upon said truck.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
US17483D 1928-05-10 Typewriting machine Expired USRE17483E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB13771/28A GB302117A (en) 1928-05-10 1928-05-10 Improved web-manifolding arrangement for typewriting machines

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USRE17483E true USRE17483E (en) 1929-11-05

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BE (1) BE302117A (es)
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GB (1) GB302117A (es)

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FR654514A (es) 1929-04-05
BE302117A (es)
GB302117A (en) 1928-12-13

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