US1150345A

US1150345A - Type-writing machine.

Info

Publication number: US1150345A
Application number: US75073513A
Authority: US
Inventors: Adolphus S Dennis
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1913-02-26
Filing date: 1913-02-26
Publication date: 1915-08-17
Anticipated expiration: 1932-08-17

Description

A. S. DENNIS.

TYPE WRITING MACHINE.

APPLICATION HLED FEB. 26. [913.

1519,45 Patented Aug. 1'7, 1915.

WITNESSES:

ATTO rm ADOLPHUS s. mums, or LAKEWOOD, OHIO, ASSIGNORITO NDEawoon crvr'swm'rna COMPANY, or NEW YORK," N. Y., A CORPORATION or DELAWARE.

TYPE-WRITING MACHINE.

To all whom-it may concern I Be itknown that I, ADoLPHUs S. DENNIS, a citizenof the United States, residing in Lakewood, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Type-hinting l\"lachines, of which the following is a specification. v

This invention relates to paper-feeding devices for typewriting machines, and especially to means for feeding paper, cards, I

etc, at the front side of the platen.

It is usual in the Underwood typewriting machine to providepaper-guiding fingers at the front of the platen, said fingers extending back. over the top of the platen, and there supported on a rod which extends along the platen. This rod and the rear portions of the paper fingers are sometlmes in the way when the, operator desires to -hold'a-\vorl:-sheet down upon the top of the platen to make erasures.

Each paper finger usually has a roll which runs on the platen, and the portion of the finger which curves around the front of the platen does not usually contact with the same, and does not hold the sheet against tlie'platen; and especially in feeding either cards or thick sheets, the said'fr'ont paper fingers are sometimes found not to contribute material assistance.

One object of the present invention is to improve the machine in these respects; and to this end I have arranged along the platen, at the delivery side thereof, arod which carries the front paper guides to permit their adjustment along the platen, but which is itself movable out of normal position to.

leave the upper part of the platen clear, for the convenience of the operator in making erasures upon thewvork-sheets or otherwise manipulating the same. One feature of this part of the improvements is that the front paper guides need not be withdrawn when said rod is removed from its normal position. Each paper guide is in the form of a mount which is adjustable along the-rod and carries a roll which is spring-pressed against the front of the platen. The rod is secured at its ends to swing arms, thus forming a bail; the bail swinging about an ,iLXlSWlllCll maybe either concentric withor little eccentric to the axes of these-front 5 feeding rolls." If the bail swings about an Specification 'of Letters Patent.

'ment with-said bottom rod.

the parts in various positions.

axis concentric with said rolls, the latter will remain bearing on the platen when the rod is swung out of normal position; but by making the bail eccentric to the rolls, the latter may be withdrawn from the platen Patented Aug. 17, 1915.

Application filed February26, 1913. Serial No. 750,735.

at the swinging of the bail from normal position.

Preferably there extends down from each adjustable mount a thin flexible leaf or band, which may be of metal, and which may lie directly in contact with the platen, and at its lower end may be caught upon a rod which extends along the front of the platen below the printing line. These ban'ds may. be tightened by the introduction of a card or work-sheet, and serve as efficient paperfeeders; while they may be adjusted where desired along, the platen and still be held sufficiently taut by means of their engage- The bands being thin and lying right upon the platen, will pass safely behind the usual front platen scale and ribbon; and the ribbon carrier preferably has special guards to prevent the ribbon catching upon said bands.

. Other objects and advantages will hereinafter appear.

In the accompanying drawings, Figure l is a perspective view of the plat-enjand-the-.. principal parts of an.Underwood typewriting machine, as are necessary to illustrate my invention. Figs. 2, 3, 4; and 5 are righthand sectional views of the same showing Fig. (5 is a perspective view of the guard for the ribbon carrier. I

In the Underwood typewriting machine, types 1 strike against the front side of a revolulole platen 2, which is mounted by an axle 3 in the ends 4 of a platen frame, said frame being provided with a paper shelf 5 and having theusual releasable; front and rear bottom feeding rolls 6, .7. i

Uponthe front of the platenrun pressure "rolls 8 which are similarly mounted and operated and which serve as feeding'rolls for the work-sheets or cards, being of special value for this purpose when the work-member is beyond the grip of the lower feed rolls. Each ,r0ll,8 is journaledupon. a mount comprising a pair of armsE) extending forwardly from a rod 10 aroundlwhich the mount is adjustable, the arms 9' being connected by a cross piece 11, and a spring 12 bearing against said cross piece 11 holds 20 but'without substantially affecting the normal position of the rolls against the platen a key 13 in a longitudinal groove ii in the vrod 10 to hold the pressure roll 8 against the v platen; said key being guided in slots in said'arms 9. Said rod is fastened at its ends to a pair of arms 15 to form a bail which is hinged orv pivoted at 16 to brackets lT'fixed by screws 18 upon the platen frame ends 4:,

said brackets extending down between the platen and the platen frame ends. These screw pivots 16 may be concentric with the pivots 19. of the front pressure rolls 8, so-

that when the rod is swung forwardly out of normal position to the positionseen at Fig. 3, the rolls will either remain on the laten ornear the same. The nearness of the rolls .to the platen when the rod 10 is swung forwardly depends on the length of 'thearms 9. Thus, by making the arms 9 shorter, the rolls 8 would be carried a corresponding distance away from the platen,

I when the rod 10 is in the Fig. 2 "position;

I The pivots 16 are Preferably a little eccentric to the pivots 19, so as to draw the rolls a littleaway' from the platen, thus to facili tate adjustmentof the work-sheet when required, as seen in Fig. 3. Itwill be seen at Fig. 3, that the top of the.platen is left clear, which is a great convenience for the operatorin making erasures. It will be also noticed that when the parts are in normal .position at Figs. land 2, there is no liability of obstruction of the sheets as they emerge from the control of the front rolls 8; the sheets are not liable to foul either with the rod 10 or with the mounts on which the rolls 'a're pivot-ed.

It will be seen that the device is readily applicable to existing machlnes, and is sim- 'ple and strong.

Eachmount can be rocked upon the rod 10 to swing the rolls entirely away from theplaten, so that the operator has the choice either of swinging the rod forwardly while 7 leaving the rolls on or near to the platen, or

else of swinging the mounts and rolls upwardly as at Fig. 5.

Preferably there extends downwardly from the lower or forward end of each mount, a short band 20 which is preferably flexible and springy, and may consist of a very thin steel spring, although any other material may be used. The lower end of this band may be caught upon the rod 21,

which at its ends 'is-fixed in the lower ends of the brackets 17. Preferably these bands are held taut against the platen, and this, it will be understood, is done without releasing the pressure of the rolls 8. On the contrary, the pull of the band may augment the pressure of said rolls.

. The bands are eflicient paper feeders, and taken in connection with the rolls; make a very satisfactorydevice for thispurpose.

.The lower ends of the bandsinay be only slightly hooked around the rod 21, as at 22, and this will permit the bands to be unhooked when it is desired to swing up the arms as at Fig. In order to unhook them, it 18 only necessary to swing the rod 10 forward a. little from the Fig. 2 to the,

Fig. 3 or 4: position, and then swing" the mounts around the rod to-the Fig. 5 position. At any time it will be seen that either front paper guide may be adjusted to any position required along the platen.

The bands 20, being thin and lying snugly against the platen, readily pass behind the usual front scales 23, and they may also easily slip fbehind the usual ribbon 2i and vibrator 25, and the latter may have guards 26, one at each side of the printing point. The guards may be secured at their lower ends in any suitable manner upon the ribbon vibrator, so as to leave a space between the vibrator and the guards for the introduction of the ribbon; and the guards may, at their upper edges, flare forwardly as at 27, so as to be engaged and cammed backwardly towardthe ribbon, to prevent the latter from being caught by said bands.

One bracket 17 has fast thereon a stop pin 28 against which the swing arm 15 strikes to limit the backward throw of the rod 10. and one bracket 17 comprises a. forwardly extending arm having a lateral lug 29,-

whichlies in the path of the swing arm 15 and forms a stop to limit the forward throw of said rod 10. The rod 10 is normally drawn to its rearmost position by means of a spring 30, which is anchored in thepaper table 5; and a friction washer 31 serves to hold the rod 10 in its forward position, as

-moveme'nt away fromthe platen, tovgive free accessto the upper portionof the latter, while keeping said roll close to the peripheral surface of the platen and substantially immovable sidewise.

2. In a typewriting machine, the [combination, with a rotary platen and its frame; of a pressure roll located above the printing line; a. paper guide extending downwardly from said roll; and arod carrying said rotl, said rod being-'pivotally mounted on said". frame to swing bodily in an arcuate-path away from the platen, to give free'acces's to 130 the upper portion of the latter, wlulekeep- ,51 a paper guide embracing a portion of said platen; a l-fixed rod having one end ofsaid guide engaged therewith; to hold the guide close to the platen; a rod arranged to swing -bodily in" an arcuate "path away from the platemto give free access to the upper portion of thelatter, and'having theother end of-said guide connected-therewith; a pair of swing arms to which the ends of the secondnamed rod secured,- pivoted onsaid to frame; andmeans associated'with said secend-named lI';f0r holding the ,secondnamed endof said'guide close to said. platen.

. 4. In artypewriting machine, the combination,.witha rotary platen and its frame; of

a 'press'ureroll located above the printing line; a rod carrying-said roll and arranged toi swing-bodily in an. arcuate path away from said platen, to give free access to the I 'upperportion of the latter; and swinging fiesupporting means forsaid rod pivoted Iframe' and having its pivotal axis nearly in line -With vthe axis of said roll, whereby said roll will be kept glose to the peripheral surface of-said platen and substantially immovable side'wise during the swinging movement of rod.

' I a ,typewritin'g n achine, the combina- ,tiomwith a rotary platen and its frame of "a rod movable bodily away from said platen to give" free access to the upper portion thereof'fa pair of arms mounted on said rod; a pressure roll carried by said arms at their free ends andflbcated above the print- *ing line; and swing arms pivoted on said frame and carrying said rod, said swing arms and said roll-carrying arms' having approximately thefsame length-and extending in approximately I the 7 "same direction from 7 said]; rod, so that their pivotal axes are caused to substantially a1ine,'wlfereby said roll will-bekept closetothe peripheral surface of the platen and substantially immoV- fable usid'ewise during :the swinging move- .inent (if-said rod. f

'6. in a typewritin machine, the combmation, with a rotary'paten and its'frame; of a paper guide 'embracinga portlon of said 1' platen and provided with a hook; a rod with second rod; swing'a'rms carrying the sec ond rod'and pivoted on said. frame, to permit said second rod to be swung bodily in'an arcuate path away from said platen, .to give, freeaccess to'the upper'portlon of the lat- 5Q ter;"a,connect1on between said second rod and said. uide; and-aspringrnormally hold I 'ing said second rod position to keep said guide close to said platen;

7. In a typewriti-ng' machine, the-combina tion; with a rotary platen and its, frame; of

connecting tsa which said hook is releasablyengaged; aj

sw n e i e'a id m v le' bodily with the-sameaway from said'l pl aten, to give freegaccess ,to the upper ,poitionof the latter; a monnton said rod; an;d; a' paper guide pivota ly connected to the free end'ofj swing arms vpivo the mou'nt-andnormally disposed close'to the platen In position to coact therewith, said m'o'i nt extending in the same direction from saidwrod as said swing arms, whereby .75 5 sald guide is permitted .to remainsub'st'an' tially stationary during theswingingmove ment of. the rod; a

8. 111 a typewriting machine, thecombina- 7 tion, with a rotary platen and-its frame; of swing arms pivoted .on said frame; a rod' connecting said swing arms and movable bodily with the same away from the'platen', to give free access to the upper portion of the latter; a mount on 'saidrod comprising, a pa1 r of spaced arms; and a pressured-loll anda paper guide connected one abovethe other to the free ends of the, mount arms,

,said mount arms extending parallel iwith the swing iarms, whereby said'roll and said 96 guide are kept close to said platenduring' 'the swinging movement of said rod! typewritmg achine, the was: 'Wlth rotary pl en and its same: of

a rod located above the printing lineiand "9'5 movable bodily in an arcuate path away from the platen, to give free access'to-the upper portion of the latter; swing arms-pie oted on said frame and carrying said rod; a mount on said rod extending in the'isa'nie" 100 direction therefrom as said arms; fand a pressure roll journaled in said mount and having its axis very nearly I in line with the .moved just'clear of the. peripheral surface ofsaid platen during the" swinging movement of the bail; anda spring connected to. said bail, to normally holdsaid roll against theplaten. W i

11. In a typewriting' 'inachine, the combination, with a rotary platen and its frame;

of a rod fixed insaid frame belowtheprinting line albail pivotalljz connected with said 1 frame .flabove 'theprinting line; afpaper guide releasably' engaged with said rod andextending upwardly therefrom and connected with said bail; and-a springconnected to said bail, to normally hold said guide against the platen, said guide being releasable from said rod and movable away from said platen when said bail has been swung I against the tension of said spring.

' frame, whereby 12. In a typewriting machine, the combination, with a rotary platenand its frame;

of means for guiding a work-sheet around the bottom of the platen; a rod located adjacent the point where the sheet leaves said guiding means; a sheet guide releasably engaged with said rod and extending upwardly therefrom; a bail pivoted on said frame above said rod; 'and arms carried by said bail and having a pivoted connection with the upper end of said sheet guide, the pivotal connection between said arms-and said sheet guide being approximately in line with the points to engage said rod, and a pivotal connection between said paper-guiding member and said bail, so that when said bail is swung forwardly to release said paper-guiding member from the platen, said hook may be released.

14. In a typewriting machine, the combination with a platen frame and a rotary platen thereon, port to which said guide is pivotally connected, said support mounted on the platen frame for movement toward and from the platen without moving the paper guide off the platen, and said guide movable toward and from the platen.

15. In a typewriting machine, the combination with a platen frame and a rotary platen thereon, of a paper guide, and a support by which said guide is carried, said support mounted on the platen frame for movement toward. andfrom the peripheral surface of the platen without moving the paper guide either off the platen or sidewise on said platen.

16. In a typewriting machine, the combination with a rotary platen and a platen frame, of a supporting rod extending longitudinally over the platen frame, arms connected to support said rod and pivoted to the platen frame eccentrically of said platen to' permit said rod to be swung in an arcuate path toward and from said platen, arms pivoted on said rod to swing about the same, and paper guides pivoted ta said last-named arms for movement therewith, and normally of a paper guide, and a supbearing against the platen,the pivots of the to be swung without lifting said guides.

17. In a typewriting machine, the combi nation, with a rotary platen and its frame;

of apressure roll arranged to run upon the platen above the printing line; and a roddis posed above said roll and connected to carry the same, said rod being pivotally mounted in said frame. for bodily lateral swinging movement in an. arcuate path away from said platen, to give free access to the upper portion of the latter, while keeping said roll close to the peripheral surface of said platen and substantiallyimmovable laterally with respect to the platen.

18. In a typewriting machine, the combination, with rotary platen and its frame of a bail pivoted on said frame eccentrically of said platen for swinging movement away from the platen, to give free access to the upper portion thereof; and a pressure roll to run upon said platen, carried by said bail and platen for swinging movement away from the platen, to give free access to the upper portion thereof; and a pressure roll to run upon said platen, carried by said bail and having its axis disposed approximately in line with the pivots of the said bail, whereby said roll will be kept close to the peripheral surface of said platen and substantially immovable sidewise during the swinging movement of the bail.

19. In a typewriting machine, the combination, with a rotary platen and itsframe; of a bail pivotally mounted on said frame for swinging movement. away from the platen, to give free access to the upper portion of the latter; a paper guide connected with said bail and having a hooked end; and

to hold said guide against the platen.

20.In a typewriting machine, the combination, with a traveling platen; of a ribbon vibrator in front of the platen having a slotted portion through which the ribbon extends; a member secured to said ribbon vibrator and having flared guards'disposed directly behind the slots in said slotted portion; the ribbon passing between the ribbon vibrator-and the guards; and a paper guide connected to travel with said platen and arranged to pass directly behind said guards, so as to engage and cam the same forwardly, to prevent the ribbon from fouling upon said paper guide.

ADOLPHUS S. DENNIS. Witnesses F. E. ALEXANDER,

J. A. BROPHY.