US2827146A - Form handling means for business machines - Google Patents
Form handling means for business machines Download PDFInfo
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- US2827146A US2827146A US543111A US54311155A US2827146A US 2827146 A US2827146 A US 2827146A US 543111 A US543111 A US 543111A US 54311155 A US54311155 A US 54311155A US 2827146 A US2827146 A US 2827146A
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- platen
- ratchet wheel
- carriage
- line
- spring
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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
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
- B41J13/12—Sheet holders, retainers, movable guides, or stationary guides specially adapted for small cards, envelopes, or the like, e.g. credit cards, cut visiting cards
Definitions
- This invention relates to business machines, especially to those adapted for printing or typing upon a work sheet carried by a cylindrical platen and more particularly" relates to an improved means for facilitating the introduction of short forms or work sheets into such machines.
- drical platen which is rotated to feed the work sheets from the rear up past a typing point located along the front of the platen.
- Some such machines are arranged to have the work sheets inserted from the front of the platen rather than from the rear but this generally calls for a more complicated and costly construction.
- the type of work to be performed by the machine dictates whether a rear-feed or front-feed arrangement is the most desirable.
- par-- ticularly typewriters for filling out comparatively "short forms such as index or file cards and machines have been devised wherein such forms may be inserted at the front of the platen and the platen then rotated in the direction plates are provided with upwardly directed open ended bearing slots within which platen shaft bearings are rotatably and removably mounted.
- the grooved bar 12 is mounted upon roller bearings within a complementarily grooved-member 14 forming a part of the base portion "of themachine, thus mounting the carriage for letter-feed and return movement past a typing position.
- the platen assembly of the present invention comprises a cylindrical platen 15 extending axially from the ends of which and fixed thereto are a pair of bearing shafts 16 ( Figure 3) and 17 ( Figure 4).
- the bearing shafts 16 and 17 are rotatably mounted in the open ended bearing slots of the end plates 10 and 11 respectively.
- the platen is provided opposite to line-space direction to bring the form to posiv tion for typing the first line.
- Such machines employ a device for attaching the lower edge of the form to the platen and have'means for limiting the rotation of the platen so that it may conveniently be oscillated between a position for inserting the form and position for typing the first line.
- One such arrangement of this type is shown in the patent to Carpenter, No. 2,239,643.
- Figure l is a perspective view showing the platen and a portion of the paper carriage of a typewriter embodying the invention
- Figure 2 is an end view of the platen and carriage, partially in section and partially broken away to show some of the operating parts and showing the platen in work-sheet-inserting position,
- Figure 3 is an end view showing a portion of the mechauism' shown in Figure 2 and showing the platen in the first-line-of-typing position,
- Figure 4 is a view partially in front elevation and partially in section showing one end of the platen and showing a spring means for rotating the platen to first-line-oftyping position
- ' work sheet or card 18 may be secured thereto.
- any sui'table means whereby the bottom edge of a Such means is herein illustrated as a channel member 19 embedded in the surface of the platen and the card is held in position by being wedged beneath one of the inturned sides of said member.
- knobs 20 and 21 are fixed to the bearing shafts 16 and 17 respectively.
- the knob 2t] is formed at one end of a sleeve 22 the other end of which is flanged and has secured thereto a plurality of segments 23, see Figure 2, which slidably guide elements 24 of a clutch.
- the elements 24 are urged by a spring 25 toward an inactive position but are normally held in active position by a spring pressed ball 26. Rotatable around its inside.
- the clutch elements 24 normally engage the clutch teeth 29 to hold the ratchet wheel 27 fast with bearing shaft 16 and the platen.
- a detent member 31 is pivotally mounted upon the carriage below the ratchet wheel.
- the detent member is urged by a compression spring 32 to normally engage a roller 33 carried on one arm thereof with the teeth 28 of the ratchet wheel.
- the detent member 31 is provided with an operating arm 34 adapted to be engaged by the lower end of a detent release lever 35 it is desired to have the platen rotate freely without disturbing the angular adjustment of the platen with respect to the,ratchet-,;' whee l,-the detent may be released until the set screw 48 contacts the stop 49, thus positioning the work sheet holding means 19 so that the bottom edge of the work sheet or card 18 may conveniently be attached to the platen. It has previously been by moving the upper end of the detent releaselever 35 mentioned that the ratchet wheel 27 is normally clutched rearwardly as indicated inEigure 3.
- shaft is Work sheet to position for receiving the first line of fined to the;platen.; liastened aroundt the-sleeve 37 by typing, ,lThe:detentreleaselever. is thenirestored to .means -;of tasetscrew gs ;is a colla r 39 to 'which the normal position and typing-rand linexspacingtproceeds in inner end of a coil g springfifl; is pinned. At its outer Q.
- therdetent roller 33 serving to prevent endpthegspring; 4tl i s seeure d to the-flange of aacup V.flaundesiredt-rotation oftthetplaten; by-the spring40r By mgmbep, ti l g idu member. is connected; by a ;.pr oper adjustment; ofzrthe angular relationship between. strap fll toan arm iii-secured to an anchori-member i the stopgmember; 51 and thenworksheetholdingmeans V 44 i bl t d ppq'nthe bearing-shaft 17.
- g sp ring 46 may b provided bpetwepen 1 adjustment; oifl.
- thewplaten is turned by the line spacing mechanism or byqrotating one of the knobs'zfl 0 19321 1, .to said-platenwherebythe relationship between said, stop means and said-work,sheetholdingmeans may be varied, spring anchoring means rotatably mounted; upon, the other oftsaidabealiingshaftstand adapted to engage airelai ,tiyely finedtportion of, the machine, a coil: spring fixed at onetend to said spging ranchoringameans and secured at its other endrelative to said-,platen,-:andreleasablemeans ,yfort loelri ngrsaidg.spriugzanchoring :means to; saidzplaten. v3. .l oniuseawith aemachine oflthe classvdescribed, a
- spring anchoring means rotatably mounted upon the other of said bearing shafts and adapted to engage a relatively fixed portion of the machine, a coil spring fixed at one end to said spring anchoring means and secured at its other end relative to said platen, and releasable means for locking said spring anchoring means to said platen.
- a platen carriage comprising a framework including a pair of end plates, a cylindrical platen having bearing shafts fixed relative thereto and extending axially from each end thereof, said bearing shafts being rotatably mounted in said end plates, a line-space ratchet wheel rotatably mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet wheel to said bearing shaft, said clutch permitting angular adjustment of said platen with respect to said ratchet wheel, cooperating stop members on said ratchet wheel and said carriage for preventing retrograde rotation of said platen beyond the desired first-line-oftyping position, adjustable stop means for variably limiting the extent of rotation of said platen in line-space direction, said last named means selectively defining the various work-sheet-inserting positions of said platen, spring means urging said platen to first-line-of-typing position, normally engaged spring urged detent means yieldingly restraining rotation of said ratchet wheel and said plate
- a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, spring means fixed at one end relative to said platen and secured at its other end to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said spring means, said spring means being biased to rotate said platen in the direction opposite to line-space direction, a line-space ratchet wheel rotatably mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet wheel to said
- a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, a coil spring having its inner end fixed to said platen and at its outer end connected to said anchor member with respect to which said platen may be rotated to a limited extent, said coil spring being so arranged as to store up energy when the platen is rotated in line-space direction relative to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said coil spring, a line-space
- a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, Work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, a coil spring having its inner end fixed to said platen and at its outer end connected to said anchor member with respect to which said platen may be rotated to a limited extent, said coil spring being so arranged as to store up energy when the platen is rotated in line-space direction relative to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said coil spring, a line-space ratchet Wheel
Description
. MaychlS, 1958 F. BECKER FORM HANDLING MEANS FOR BUSINESS MACHINES Filed 001:. 27, 1955 INVENTOR- FRED BECKER By 254% d A TTORN E V United States PatentO FORM HANDLING MEANS FOR BUSINESS MACHINES Fred Becker, Queens Village, N. Y., assiguor to Underwood Corporation, New York, N. Y., a corporation of Delaware Application October 27, 1955, Serial No. 543,111
7 Claims. (Cl. 197-136) This invention relates to business machines, especially to those adapted for printing or typing upon a work sheet carried by a cylindrical platen and more particularly" relates to an improved means for facilitating the introduction of short forms or work sheets into such machines.
Business machines such as typewriters, accounting ma- 2,827,146 Patented Mar. 18, 1958 ice ' a typewriting machine it will be understood that it is not limited to that application but that in general it is adaptable to any business machine having a cylindrical platen. Since the details of construction of the platen carriage are not of the essence of the present invention, said carriage has been illustrated more or less diagrammatically as comprising a pair of end plates and 11 mounted upon a grooved bar 12 and further tied together by various cross members, one of which is shown at 13. As
shown in the patent to Helmond, No. 2,172,008, the end chines and the like are generally provided with a cylin-. 5
drical platen which is rotated to feed the work sheets from the rear up past a typing point located along the front of the platen. Some such machines are arranged to have the work sheets inserted from the front of the platen rather than from the rear but this generally calls for a more complicated and costly construction. The type of work to be performed by the machine dictates whether a rear-feed or front-feed arrangement is the most desirable.
At times it is desired to use business machines, par-- ticularly typewriters, for filling out comparatively "short forms such as index or file cards and machines have been devised wherein such forms may be inserted at the front of the platen and the platen then rotated in the direction plates are provided with upwardly directed open ended bearing slots within which platen shaft bearings are rotatably and removably mounted. The grooved bar 12 is mounted upon roller bearings within a complementarily grooved-member 14 forming a part of the base portion "of themachine, thus mounting the carriage for letter-feed and return movement past a typing position.
The platen assembly of the present invention comprises a cylindrical platen 15 extending axially from the ends of which and fixed thereto are a pair of bearing shafts 16 (Figure 3) and 17 (Figure 4).
When the platen assembly is in use, the bearing shafts 16 and 17 are rotatably mounted in the open ended bearing slots of the end plates 10 and 11 respectively. The platen is provided opposite to line-space direction to bring the form to posiv tion for typing the first line. Such machines employ a device for attaching the lower edge of the form to the platen and have'means for limiting the rotation of the platen so that it may conveniently be oscillated between a position for inserting the form and position for typing the first line. One such arrangement of this type is shown in the patent to Carpenter, No. 2,239,643.
it is an'object of the present invention to provide a business machine 'having an improved arrangement for facilitating the handling of relatively short forms.
It is a further object of the invention to provide a business machine which'may be converted quickly and with aminimum of effort from one adapted for the usual type of work to one especially adapted for handling short forms.
It is a still further object of the invention to provide a platen assembly for use with a business machine which will greatly facilitate the handling of short forms.
These and other objects, features and advantages of the invention will become more readily apparent as the description of a preferred embodiment thereof proceeds.
Referring now to the drawing:
Figure l is a perspective view showing the platen and a portion of the paper carriage of a typewriter embodying the invention,
Figure 2 is an end view of the platen and carriage, partially in section and partially broken away to show some of the operating parts and showing the platen in work-sheet-inserting position,
Figure 3 is an end view showing a portion of the mechauism' shown in Figure 2 and showing the platen in the first-line-of-typing position,
Figure 4 is a view partially in front elevation and partially in section showing one end of the platen and showing a spring means for rotating the platen to first-line-oftyping position,
' work sheet or card 18 may be secured thereto.
with any sui'table means whereby the bottom edge of a Such means is herein illustrated as a channel member 19 embedded in the surface of the platen and the card is held in position by being wedged beneath one of the inturned sides of said member.
For facilitating the rotative adjustment of the platen by either hand of the operator, knobs 20 and 21 are fixed to the bearing shafts 16 and 17 respectively. The knob 2t] is formed at one end of a sleeve 22 the other end of which is flanged and has secured thereto a plurality of segments 23, see Figure 2, which slidably guide elements 24 of a clutch. The elements 24 are urged by a spring 25 toward an inactive position but are normally held in active position by a spring pressed ball 26. Rotatable around its inside. The clutch elements 24 normally engage the clutch teeth 29 to hold the ratchet wheel 27 fast with bearing shaft 16 and the platen. By pressing a button 30 toward the knob 20, the ball 26 may be moved away from the elements 24, whereupon the spring 25 moves said elements out of engagement with the clutch teeth 29 and the platen and ratchet wheel may be rotated independently of one another. While a particular form 'of clutch has been described, the structural details of the clutch are not of the essence of this invention and any formof clutch known in the business machine art as a variable line-space clutch may be employed.
For preventing accidental rotation of the platen and for holding the ratchet Wheel 27 when it is desired to adjust the rotary position of the platen with respect to said ratchet wheel, a detent member 31 is pivotally mounted upon the carriage below the ratchet wheel. The detent member is urged by a compression spring 32 to normally engage a roller 33 carried on one arm thereof with the teeth 28 of the ratchet wheel. The detent member 31 is provided with an operating arm 34 adapted to be engaged by the lower end of a detent release lever 35 it is desired to have the platen rotate freely without disturbing the angular adjustment of the platen with respect to the,ratchet-,;' whee l,-the detent may be released until the set screw 48 contacts the stop 49, thus positioning the work sheet holding means 19 so that the bottom edge of the work sheet or card 18 may conveniently be attached to the platen. It has previously been by moving the upper end of the detent releaselever 35 mentioned that the ratchet wheel 27 is normally clutched rearwardly as indicated inEigure 3. to the platen and that thespring 40, while tending to 7 It ;wil l; be understoodr-that the platen is line-spaced rotate the platen in the direction opposite to its line by moyingtheratchet wheel- 2 7 in a-counterclockwise dispacing movement, is ,notsufliciently-strong to move the rection as viewed in the drawing. ,WhiIe any of various platen against the aetionofi thedetent roller 33. Thereknown means may be employed for turning the. ratchet olfore; afterattaching the ,twork ysheet to thezzplaten, vthe wheeL one' suitable means is described in the patent to operator pushes ;thev detent erelease-Jeverj35;rearwardly t Helm qnd; No, :2,2 62,6Z and a portion of suchsmeans is to free the, ratchet wheel and platen fronr:=;the;;action indicated inthe drawing 2 11336. e of the detent roller 33,vwhereupon the spring 40 snaps I w At the' right; hand; end ojitheplatena flanged sleeve the platen and the ratchet *whee'l'27 in the direction op- ;Zfi surrounds the bearing-shaft 1 7.' 1,Thesleeve 37 is fixed posite to linemspacing togthegposition where the stop v rtovtlge platen and so ofi-cqurseais fixedwith respect to the member 51 contacts the fixed stop 52, thus bringing the 'haf;t 11;. 'nc e a s previously mentioned,,;said. shaft is Work sheet to position for receiving the first line of fined to the;platen.; liastened aroundt the-sleeve 37 by typing, ,lThe:detentreleaselever. is thenirestored to .means -;of tasetscrew gs ;is a colla r 39 to 'which the normal position and typing-rand linexspacingtproceeds in inner end of a coil g springfifl; is pinned. At its outer Q. itheusual manner, therdetent roller 33 serving to prevent endpthegspring; 4tl i s seeure d to the-flange of aacup V.flaundesiredt-rotation oftthetplaten; by-the spring40r By mgmbep, ti l g idu member. is connected; by a ;.pr oper adjustment; ofzrthe angular relationship between. strap fll toan arm iii-secured to an anchori-member i the stopgmember; 51 and thenworksheetholdingmeans V 44 i bl t d ppq'nthe bearing-shaft 17. 1;The '19 anyqdesired;.wfirst-line-of typing position of the work springfil) is so,;w ound as vtonirge theplaten in arclock- ,5 sheet-maybesaccurately-.determined. v i direction as, viewed in .the'drawing' andto urge the .When lithis ;desired to.use.,the-machine lfo'rthe more ranchqr mflmbelpzlin a t lockwise direction. When I usual typeof work,'the:thumb screw 45 isv screwed down the platen a se bly i i p sifi n i h n h .against-t he.pl3t6n to :prevent the unwinding of the spring lo\ver-;end of theanchor;; member- 44 ab uts ithe cm fr-40. and the platen; assembly islifted out of the carriage. member 13 tothereby prevent counterclockwi move. 7 -Anordinaryplaten. assembly :such as indicated generally ment g id anchor member and the ener f; h .at 53 in Eiguret-dmay; then he quickly substituted. r spr'ing 4p i th di e t d t d i 11 l i 1-Iaving thus; described apreferred embodiment of the acidokwise. directipn yvhich i jh di i i invention, what is claimed is: thezline spacing-direction, .,H weve f areason-ahere- 1. Formusewitha: machine of vthe;class described, a :inafterto beexplained, the; tension of the spring 40 is a5u-cylindficalplatn havingrbeizlring Shafts extending axially not,sufiic ieut,t0 o come the ction ofthe detent 31, from eachendthereof worksheet holding means onsaid V Athnmb re 4sji djm h anchot member 7 platen, -a linewspace ratchet wheel rotatatbly mounted arm 43 may be: tightened against thg Surface of the rcoax ially 'withpsai d platen, stop means on said 1 ratchet pla te t thereby lo k the anchor member 44 t q the zrwheeliadapted to. cooperate with a relatively fixed stop p at n a -.Wl Q r nl 1platenasse bly is-removed from 40 WheMaid-Platefi i e, ehi means for Preventing the carriage the spring 40 will. be maintaing d undelrelativerotaati n of-tsaidtratchet wheel andtsaid, platen, tension. For preventing accidental displacement of th visaid u h ng means bei g r l asabl topermitrotative vthumb screw, g sp ring 46 may b provided bpetwepen 1 adjustment; oifl. .said vratchet wheel-with ,repsect to said head; of saidrscrew and'the 5 x43 to h ld the'ae; screw ,,.p1aten :whereby wthegrelationshipbetween said. stop means 1 'in' whatever;pogtion to which it i t rn d, i-rand said w rk sheetzholding means may beyaried spring Rptatablylaqjus hlegoqthcubgqinggshaft isfa: lcvonar anchoring means rota tably mounted -.upon. --one of said 47 whichrmayab plied-to s ai d ;5haft invmnyvfldegred bearing.shaftsgand adapted llfl fingage33.;1613IiV61Y1fiX6d T3 18 jii l bxn ea glongated; Set ew g -porfimi.Qfihdmachine,ra.coil; springrfixcd at. onerend to said springtanchgringimeanstandsecured at itslvotherend A ,w mpatnemb r 2;;s eu cd t0: the tcarriag fl dv splate a l cowl. 50, 9: t9ranxrgthsrficgpyeniem ofdthe carriage relatlve toosa d; platen and: releasable, means 'jfQI locking aid spring anchoringmeansto'saidtplaten.
r, cooperateswithathe elongated:set screw 48 to:.;preyent a 2.;,Eor ;usetwlthjamachme of theiclassdescribed, a
,line space movement of; the platen heyondvwhatlisherein. r e med '-wvrlz e ns ng:position. The-worksheet? .--vyhndrlaaltplaten a l bearing:shaftsfixtendiflgaxially from each end thereof, work sheet holding means onrsaid insertingeposition of; the,-pl aten is shown inEigures 1 and 2, and is the-.r9Iated-positi0n of;;the;.platen;wherein I *P -a-1111?lspaceiratchet-Mheel*mtatably mounted t e cha m m er 1 1 's v nvr niently accessible -for m I receivvingjthe bmmmi edge 0i thggwoxkishet ratchet wheeliadapted to :cooperatewith a relatively fixed 1t stoprwhen, said platen is ins-use, -.c lutching means'for a r-preventing v relative,rotation ofvsaidt .ratchet wheeljrand p t For preventing retrograde rotation of the platen beyond ,position for typing thea first line on ;the-.;-w0rk sheet, a stop member 51 is secured to; the r atchet' vWheel 21 and a said step memberaqooperates with; a, fixed stop 52 ;forming apart of therframework Qf-the -carriage'. ..:.This firsthne-of-typing po liQn-of the platen ViS ShOWI1 in; Eigure 3. By releasing the variableline; spacetclutch ;.and; manually turning thegplaten, the" relationship between .the' work ,1 sheet; holding means 1 9 and the stopzmember. 51,may be r soadjusted that when; the linespace; clutch .isareengaged 1 and the platen turned 1 bringztherstop member 51 into engagement with ;the. :fixed sto 52 the :work sheet, which ;,=is held: at-iitszhottomi edge; bythe holding means 19,
will'be properly-positioned for-:receiving tthetfirstsline ofwtyping. I Q 7 M ii Inoperation, thewplaten is turned by the line spacing mechanism or byqrotating one of the knobs'zfl 0 19321 1, .to said-platenwherebythe relationship between said, stop means and said-work,sheetholdingmeans may be varied, spring anchoring means rotatably mounted; upon, the other oftsaidabealiingshaftstand adapted to engage airelai ,tiyely finedtportion of, the machine, a coil: spring fixed at onetend to said spging ranchoringameans and secured at its other endrelative to said-,platen,-:andreleasablemeans ,yfort loelri ngrsaidg.spriugzanchoring :means to; saidzplaten. v3. .l oniuseawith aemachine oflthe classvdescribed, a
E m-Ie ch-tendithereof workzsheet holdingstneansxon said laten, a line space ratchet; wheel 1; rotatably :mounted H c ,P AfiYSt. one-ofsaid bearingzshaftsrstop means onsaid l5 ratchet wheel adapted to cooperate withatrelativelyrfixed saidrplaten;saidwlutching. meansbeingaeleasable to permit rotative adjustment .ofi-saidratchetwheel-with respect cylindrical platen having bearingzshafts-iextendingaaxially I. stop when said platen is in use, a clutch for gripping said ratchet wheel to said bearing shaft, said clutch permitting rotative adjustment of said ratchet wheel with respect to said platen whereby the relationship between said stop means and said work sheet holding means may be varied,
spring anchoring means rotatably mounted upon the other of said bearing shafts and adapted to engage a relatively fixed portion of the machine, a coil spring fixed at one end to said spring anchoring means and secured at its other end relative to said platen, and releasable means for locking said spring anchoring means to said platen.
4. In a machine of the class described, a platen carriage comprising a framework including a pair of end plates, a cylindrical platen having bearing shafts fixed relative thereto and extending axially from each end thereof, said bearing shafts being rotatably mounted in said end plates, a line-space ratchet wheel rotatably mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet wheel to said bearing shaft, said clutch permitting angular adjustment of said platen with respect to said ratchet wheel, cooperating stop members on said ratchet wheel and said carriage for preventing retrograde rotation of said platen beyond the desired first-line-oftyping position, adjustable stop means for variably limiting the extent of rotation of said platen in line-space direction, said last named means selectively defining the various work-sheet-inserting positions of said platen, spring means urging said platen to first-line-of-typing position, normally engaged spring urged detent means yieldingly restraining rotation of said ratchet wheel and said platen, and manually operable means for releasing said detent means to thereby free said ratchet wheel and said platen to the action of said spring means whereupon said spring means will rotate said platen to first-line-of-typing position.
5. In a machine of the class described, a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, spring means fixed at one end relative to said platen and secured at its other end to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said spring means, said spring means being biased to rotate said platen in the direction opposite to line-space direction, a line-space ratchet wheel rotatably mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet wheel to said bearing shaft, said clutch permitting angular adjustment of said platen with respect to said ratchet wheel, cooperating stop members on said ratchet wheel and said carriage for preventing retrograde rotation of said platen beyond the desired first-line-of-typing position, means for limiting the extent of rotation of said platen in line-space direction, said last named means defining the work-sheet-inserting position of said platen, normally engaged spring urged detent means yieldingly restraining rotation of said ratchet wheel and said platen, manually operable means for releasing said detent means to permit free rotation of said ratchet wheel and said platen between work-sheet-inserting position and first-line-of-typing position, said spring means serving to impart retrograde rotation to said platen to the extent defined by said cooperating stop members when said detent means is released but said spring means having insufficient strength to move said platen when said detent means is engaged, and means for locking said anchor member to said platen whereby said platen may be removed from the carriage without disturbing the relationship between said platen and said anchor 'member.
I '6. In a machine'of the class described, a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, a coil spring having its inner end fixed to said platen and at its outer end connected to said anchor member with respect to which said platen may be rotated to a limited extent, said coil spring being so arranged as to store up energy when the platen is rotated in line-space direction relative to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said coil spring, a line-space ratchet Wheel rotatably mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet Wheel to said bearing shaft, said clutch permitting angular adjustment of said platen with respect to said ratchet wheel, cooperating stop members on said ratchet wheel and said carriage for preventing retrograde rotation of said platen beyond the desired first-line-of-typing position, adjustable stop means for variably limiting the extent of rotation of said platen in line-space direction, said last named means selectively defining the various work-sheet-inserting positions of said platen, normally engaged spring urged detent means yieldingly restraining rotation of said ratchet wheel and said platen, and manually operable means for releasing said detent means to permit free rotation of said ratchet wheel and said platen between a work-sheet-inserting position and the first-line-of-typing position, said coil spring serving to impart retrograde rotation to said platen to the extent defined by said cooperating stop members when said detent means is released and said coil spring having insuflicient strength to move said platen when said detent means is engaged.
7. In a machine of the class described, a reciprocatable carriage mounted for letter-feed and return movement across a typing position, said carriage comprising a pair of end plates having open-ended bearing slots therein, a cylindrical platen, Work sheet holding means on said platen for securing the bottom edge of a work sheet to said platen, platen bearing shafts extending axially from the ends of said platen and fixed relative thereto, said bearing shafts being mounted in said open-ended bearing slots whereby said platen is rotatably and removably mounted in said carriage, an anchor member rotatably mounted on one of said bearing shafts, a coil spring having its inner end fixed to said platen and at its outer end connected to said anchor member with respect to which said platen may be rotated to a limited extent, said coil spring being so arranged as to store up energy when the platen is rotated in line-space direction relative to said anchor member, cooperating means on said anchor member and said carriage for preventing movement of said anchor member by said coil spring, a line-space ratchet Wheel rotatatbly mounted upon one of said bearing shafts, a normally engaged clutch gripping said ratchet wheel to said bearing shaft, said clutch permitting angular adjustment of said platen with respect to said ratchet Wheel, cooperating stop members on said ratchet wheel and said carriage for preventing retrograde rotation of said platen beyond the desired first-line-of-typing position, means for limiting the extent of rotation of said platen in line-space direction, said last named means defining the work-sheet-inserting position of said platen, normally engaged spring urged detent means yieldingly restraining rotation of said ratchet wheel and said platen, manually operable means
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US543111A US2827146A (en) | 1955-10-27 | 1955-10-27 | Form handling means for business machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US543111A US2827146A (en) | 1955-10-27 | 1955-10-27 | Form handling means for business machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2827146A true US2827146A (en) | 1958-03-18 |
Family
ID=24166616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US543111A Expired - Lifetime US2827146A (en) | 1955-10-27 | 1955-10-27 | Form handling means for business machines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2827146A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1182499A (en) * | 1915-05-24 | 1916-05-09 | John J Mason | Type-writer. |
| US2272098A (en) * | 1939-12-27 | 1942-02-03 | Underwood Elliott Fisher Co | Typewriting machine |
-
1955
- 1955-10-27 US US543111A patent/US2827146A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1182499A (en) * | 1915-05-24 | 1916-05-09 | John J Mason | Type-writer. |
| US2272098A (en) * | 1939-12-27 | 1942-02-03 | Underwood Elliott Fisher Co | Typewriting machine |
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