US1477048A - Attachment for typewriters - Google Patents

Description

Dec. 11, 1923. 1,477,048

l F. E. FANGER A l ATTACHMENT FOR `TYPEWRITERS Fil-ed April 2 1920 2 Sheets-Shet l Ammers' Dec. 11, 1923.

F. E. FANGER ATTACHMENT FOR TYPEWRITERS 2 Sheets-Sheet 2 Filed April 2 1920 Nn* S .wvf/vron Afro/Mfrs the setting of Patented Eea. ll, 1923;c

FRED EDWARD FANGER, F MEXICO, MEXICO.

ATTACHMENT FOR TYFEWB/TES.

application ined april 2,

To all whom maiyconcern Be it known that FRED EDWARD FANGER, a citizen or the United States, and a resident of Mexico, D. F., Republic oi Mexico, have invented a new and improved Attach ment for Typewriters, of which the followinv is a description.

Vy invention relates to an attachment for typewriters whereby the user of the typewriter may know lat any time and instantly how many lines may stillbe written upon the unused port-ion of the paper in the machine.

More especially the invention relates to an attachment for the indicated purpose embodying an indicating element to be revolvedL lwith the axle of the platen roller of the typewriter and a relatively fixed indi'- cating element.

The general object of the present invention is to provide an attachment of the indicated character improved in various particulars, more especially with respect to the drive means for the turnable indie-ating 'element and the means making provision for the indicating means, and whereby also to provide an attachment comprising few elements making for simplicity oit assemblage and adjustment.

Reference is to be had to the accompanying drawings forming a part of this specitication, it being understood that the drawings are merely illustra-tive oi one example of the invention.

Figure 1 is a lan view 'of a typewriter attachment enibo ying my present invention illustrating the same applied to the axle of the platen roller shown in part;

F iffure 2 is a vertical section through the attachment onthe line 2 2, Figure 1, the platen. roller being in side elevation;

Figure 3 is atransverse section on the line 3-3, Figure 2;

Figure. 4 is a view similar to Figure 2 but illustrating another form of the attachment; Figure 5 is a cross section on the line 5-5, Figure 4t;

Figure 6 is a developed view of the index means on the revoluble indicating element. Referring more particularly to Figures 1 to 3, A indicates a portion of the usual platen roller or the typewriter; B, the axle thereof; and C, a portion of the typewriter frame. I provide an axle extension 10 formed upon or secured to the axle B to be rigid with the latter for turning therewith,v

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in the present example, said extension V10 is made tubular at its inner end 11 to re? eeive the end oi the axle B and suitably fastened thereto as by set screws 12. For manually turning the extension 10 andthe axle'B Withthe platen roller A any suitable Y i means may be provided, such as the usual milled handwheel 13, here shown as fas tened by a set screw 14 to the extension lOlA Fast on the axle extension 10 is a drive element 15, here shown as a toothed pinion which meshes with `and serves to drive pinions 16 turning on stud axles 17 secured to a base plate 18 'or' suitable form adapted to be secured to the trame C, there being shown for the purpose a liange 19 onsaid base plate secured by screws 20 to trarne C. Rigid with the base plate 18 is an index element in the form of a pointer 21 which extends over a revoluble indicating element 22. Said revoluble element 22 is in the 'form 01" a shell presenting an annular flange bearing index means at its outer periphery and includes a plate or disk 23 having a hub 24e fitting the axle extension 10. The revoluble element 22 thus houses the describedY A clearanceisp-rovided at the inner end of the hub 24 to permit Vit to b-e moved on the extension 10 toward the drive pinion 15. A coiled`spring'25 is provided surrounding the axle extension 10 and the adjacent end'of the hub 24', one end of the spring abutting the pinion 15 and the other abutting the plate 23; An internal gear 26 on the indicating element 22 is normally in mesh witlifpinions 16 to be driven by the latter. maintains the internal gear26 in mesh with the pinions 16 but said springis yieldable i to an inward axial movement or thev plate The spring y normally 23 and indicating velement v22, so that the internal fear 26 may be movedout of gear with the .pinions 16 so that the revolublej indicating element 221nay be turned inde-` pendently ot' the axle Bandits extension 1()V and independently of the gear elements 15 and 16 for optionally setting said revolu# ble indicating element rela-tively to the pointer 21.

The. indicator element22 bears on its periphery index means in the form of three annular series of subdivisions and identifying symbols, the divisions and symbols of the respective series being in the ratio to one another of one', two and three, corre- ,SPOndng-te Single, double @1.111. tfipls Spas-1 les ` housing ii an ge ing oi' typewritten lines, so thatias the pieten A is t' rned forwardly or baelivar'diy the movement is indicated on the element 22 by the pointer 21. in the iliustrated example the sub-divisions in one series correspond with single-line spacing are indica-ted' by numerals in units oi' six` np to seventytwo.. The second, intermediate series cor resp-ond with dou-ble-line spacing and bear numerals in units off While the third series presents sub-divisions correspondingwith tripleline spacing and numbered in unit-s of two Lip to ytwenty-toni'. Y In practice, the indicati-ngv means is set by turning .the re'v'oliiblle element 22 under the pointer 21 after which n0v 'further adjustment or manipulation of the attachment is required. The setting as thiis stated is done by first disengaging' the internal gear 26from the pinions 16, allowing` the element -Vto turn freely baiekwar'dly or forwardly. The spring 25 automatic-ally returns the plate 23, element 22, and internal gear 26 to a position with the latter in mesh with the pinions 16. It will be obvious that the attachment; may he seit at any ytime either before or after placing the paper iii the typewriter. The attachment may be embodied in a typeivritinp; machine at the tactory or applied to the machine after leaving the factory.

In'tlie form of the invention shown in` 1ip'gures 4 :and 5 `an axle eitension 10a is Y provided, here slioivn as attachahle to or detachable from the axle B of the platen roller A, ythe tubular inner end 11 ot' said eXtension being` secured by set screws 121 to the axle B, the outer end of said eX-tension havin g the handvvheel 13. Rigid with the extension 10l to turn therewith is ay drive element 152L here. shown as -apinion meshing;` with a pinion 16a loos-e on a stud shai't 1Ta projeetingr from `the base plate 18a, the flange 1921 of which is rigidly secured to the frame C and is provided with a. pointer 21 extending over the periphery oit the revoluble indicator element 2 a having at its inner end a 22b directed 'radially inward inside of the pinions 15, 16a. r)lie revoluble element 22 includes a disk or plate 23a having a hub 242L sleeved onto lthe extension 103 adjacent to the handwheel 13. The stud shaft 17a has also loo-se thereon a second tl'iree up to thirty-six,

pinion 161 meshing with a pinion or armular; rack 26ZL extending,- aboiit but free from theV extension 10 and secured to plate 223ia l y any suitable means such as pins or screws 26". An extension spring' 25fL is coiled about the extension 10 between the pinions 15, 26a and abrite respectively at its ends against said pinions tono-rinaily maintain the pinion 26 in mesh Wirt-li the pinion 16" to be drive-n by the latter. Sad spring is yieldable to van inwardr movement of the revoluble. indicatingelement to disengage the pinion tro-m the pinion V16b or setting'the indicator by turning' the revoliible element.

. I would state in conclusion that vvliilethe illustrated example constitutes a practicar embodiment of my invention, l do not innit myseli strictly to the mechanical details' herein illustrated since manifestly the same can be considerably varied Without departure Jreni the spirit of the invention asv de` fined in the appended claims.

Having' thus described my invention, I

claim:

1... A typewriter attachment including. a support adapted to be Secured to a fixed part of a. typewriter adjacent to the axle oi the platen rol-ler, an-axle extension adaptedI to be secured to the axle of the typewritena pointer on said support, anV indicator ele* ment ievoluble relatively t0 said pointer andA coaxial with said extension, a driven gear element on said i'evoluble indicating element, a drive element iiXed on said axle extension, and a, driving' connection between said drive and driven element and carried by said support, said revoluble indioatingu element being vvoptionally turnable independently of said drive element. n Y

2. A; typewriter attachment ot the class described comprising a rotatable drum, a reducing` gear interposed i 'etiveen the said drum and the platen roller o'i the typewriter which permits Vrotation ot' the drinn in both directions, Vindex means 'aiixed to the said drinn presenting* three annular series of subdivisions oorreepond-ing with single, double, and triple spacing' and a` stationary pointer ior simultaneously indicating the corresponding single, double and triple line spaces remaining on the page.

YFinn) EDWARD randen.k

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