US1198097A - Type-writing machine. - Google Patents

Description

C. W. BARNABY.

TYPE WRITING NIACHINE.

APPLlcATloN man 050.251.1911,

Patented Sept 12, 1916.

CHARLES W. BARNABY, OF NEW YORK, N. Y.

TYPE-WRITING MACHINE.

Application id December 23, 1911.

[o r// fell/om vn (1,1/ france/n lle it known that 1 tnlxnLns W, Bine sint'. a citizen ot the United States, residimgr in the first ward, borough of Richmond, county otl Richmond, city ot New York, and State ot INew York. have invented a new and uset'ul 'lype-Writing l\'laohine, of which the following is a spcciteation.

My invention relates to improvements in the manner ot' mountingV the paper roll, or platen. tor typewritingr and similar recording machines in which letters, and other characters and marks. are recorded upon a sheet or roll ot paper or other material: and the objects ot' my improvement are, first, to

reduce the siz. and weight ot' portable ma ehines, of which the 'folding typewriter, 4Patent No. 75l-,272. Rose, March 8, 190i., is an example; 'second` to provide for the i11- scrtion ot a wider sheet than will be admitted b v such machines as heretofore constructed; third, to permit the ready substiw tution otE other platens, mailing tubes, or

other objects withcylindrieal surface, in the place ot' the regular platen so that they may he written upon. I attainthese objects by the mechanism illustrated in the accompanyingr drawings in which- Figure 1 is an end view and Fig. 2a trout view illustrating;r the application ot' my in vention to the foldingY typewriter referred to above: Figs. El, l. 5 are end. front and end views respectively` ot' a modified application ot' my invention; and Fig. ti is a back view and Fig. T an end view oll my preferred adaptation oll my invention to compact. portable machines.

A\s my invention relates only to the platen aml the carriage by which it is carried and controlled. VI have not considered it essential to show a machine complete in all ol' its dw tails and therel'ore merely show a l'ew principal mcmbers oll the machine proper. such as will enallle those versed in the art to readily understand the application and op` eration oll my in millon.

lSimilar letters rel'er to throughout the several views.

The platen lt is supported and controlled in whole or part lilv the rolls X. N. (l. (Y and springs (el. Q' which l'orm a part olI the carriage. Other parts oll the carriage are the tie and slide piece d, the tic ll. the end l'rames l. l` the carriage wheel l and rack similar parts hl. the ties J. l, formingr the principal longe.

tudinal members olI the carriage trame.

Specification of Letters Patent.

Serial No. 667,537.

Referring to Figs. l. 2:A, A, A are parts of the main frame; B, C, D, E, F are reprcsentatives, respectively. of the banks ot' keys, key-levers, links, type-bars and types; W, W are the guide posts and V, V the guide stems whereby the carriage traine` G is connected with the-main t'rame in such manne' as to admit ot' its vertical adjustment. hy means ot' the key and lever Y, X, to correct positions tor the several characters on the type F when the latter is thrown, by pressingy the key l, into writing position F. Il, `Il are hinge arms attached to the carriage supporting trame (l and guide stems V, whereby the carriage t'rame may be swung on thtl pivot Z to the position IlH It. to put the machine in compact torm tor convenient transportation. The parts l ot' the carriage Jtrame (l serve as tracks upon which the 'arriage whecl l( and slide rod .l travel. (lllards l. I .prevent the carriage 'from'lit'ting otl' oi" the tracks.

s is understood by those. lamiliar with typewriters as heretofore manirliactured. the platen revolves on i pivot in bearings at each oi its ends similar to .c and u.. lt`ifgs. -l.

. a knob-like handle 'l being' provided at one or both ends whereby the platen may be rotated hy hand. also a l atchet wheel S whereby the platen is rotated by suitable adjustable mechanism which rives it a predetermined part' ot a'revolution to the extent oll one. two or more ratchet teeth, according .to the spacing' desired between the lilies w-ritten. lt is obvious that in my invention as exemplilicd in Figs. 1. L) these platen end pivots and bearings are dispenstalwvith and the platen centered and rotated by a system ot' rolls (l. (l arranged about its periphery. thc rolls t). beinemounted in .springs (Q lo `ive the required pressure between the system ol' rolls and platen.

'l t has lnrctol'orc been colnmon practice to -snrround the platen with similar rolls l'or the purpose ot'holding the writing paper in contact with the platen so that when the platen is rotated it will, duc to the surl'ace l'riction olI the paper pressed against. it by the rolls. imparti its peripheral movement to the paper. which. in turn` imparts its motion to thc rolls` causing them to rotate at the same peripheral speed as the platen. ln my invention'l reverse the order otl this action by first imparting motion to one or more ot' they small rollsl` which, in turn, im-

part the motion to the pape "and platen. T,

.meat-eti sept.. 12,1916.

Fig. 2, shows a handle attached to the end of the shaft ofl'roll N, Fig. l, byxneans of which the roll may be rotated to the effect that motion is imparted tothe whole roll system incliiding the platen and sheets of palper placed between the platen and small ro ls.

j In Figs. 3, 4, 5 is shown another manner of applying my invention in which the platen is pivotless at one end only the other end being mounted on a pivot, m, Figs. el, 5, in the usual manner. In this case the motion can eitherA be imparted to the platen first through the handle T or ratchet S, or to one or more of the small rolls, as best suits the requirements of the particular machine to which'the'invention is applied.

Figs. 6, 7 show my preferred manner of applying my invention to portable machines. The pivotless platen is mounted in an open ended carriage, 'centered and controlled by the rolls N, N', O, O; motion isimparted to the roll system through the auxiliary shaft c o either by means4 of handle T, Fig. 6, or the ratchet wheel S. The handle T is mounted on the rod b which is telescoped into the hollow part c of the auxiliary shaft `and engages, rotatively, therewith by the pin e in the` rod b which slides in the slot d in the hollow shaft c. This 'slotted connection permits the rod I) to slide endwise in hollow shaft 0, thus permitting the adjustment of the handle T to a greater or less distance from lthe end of the carriage and platen for the purpose explained hereafter. The ratchet wheel lS is attached rigidly to the shaft o which in turn is rigidly attached lto the hollow part, c, of the shaft so that all rotate together as one unit. To this Vshaft is also rigidly connected the gear .wheel g which meshes with and drives pinion f attached rigidly to the shaft of the roll N. The gear wheel g is also connected with the pinion j on `the shaft of the roll N lthrough the two intermediate pinions h, i. It is obvious that when, with this 'trainof gear, motion is given to shaft o b, the two rolls N, N will be positively driven in unison, both in the same direction of rotation, thus driving the platen and `feeding the paper more positively than when only" one-roll is positively operated, as in Fi 2.-

rThe platen is caused to rotate as desired by 'means of the handle T, Fig. (5, or by means of thel line spacing mechanism as follows :--"l`he upper end of lever Z, 'at the front or writing side of' the platen, is forced 60'causes the link Il' to swing on thefpivot and toward shaft b and the arm z of the bell crank a, to which the lever l is connected, to swing `on the shaft o and toward and against the stop pin u which is attached in a 65 fixed position to the end frame P. At the downward by the operator-s finger, which same time the pawl m at the end of the other arm of bell crank n moves forward, and, being thrown by the spring o into engagement with a tooth of the ratchet wheel S, gives the latter a rotative motion the extent of which is determined by the distance which the bell crank n, swings before its freeV to be operated by means of the handle T, Fig. (i, or otherwise, without interference on the part of the pawl m. The pins c, t are attached tothe. two arms of bell crank which rotates about the center of'shaft /1' and is capable of adjustment to certain fixed positions through its crimped spring l/ in Contact with the fixed pin on the end frame P of the carriage.

As has already been explained, the forward movement of the pawl ml is always to one fixed point determined by the arm ol bell crank a striking the fixed slop pin u. It is now evident that, having provided means for holding the lever f in certain several positions by means of the crimped spring y, the n1echanism n1ay be adjusted to turn the ratchet wheel S to the amount of one or more teeth at a time, as desired, by merely adjusting bell crank to the position that will so locate its pin t as to stop the arm z of bell crank n. as to allow the pawlm to only recede from its advance feeding po sition toa point covering the number of teeth it is desired to feed at each operation `of the feeding mechanism. rlhe pivotal centers of the vbell cranks and n being co incident, it is obvious that to whatever position bell crang f is adjusted its lwo pins t, Av are in such relation to bell crank 'a that 'whenever the arm is in contact with pin t the tail of pawl m is in engagement with pin o and thus holding the pawl out of engagement with the teeth of ratchet wheel S.

When, in the portable typewriter of" the form illustrated in Fig. 1, the platen li and carriage frame support (i are folded to the position indicated at llQR, it is obvious that the space occupied by the machine is considerably reduced. 'It so happens that the length of platen together with its end bearings and handles on the extended ends of its pivots, as heretofore constructed, when given the free space between its end bearing frames which is commercially required for the .reception of sheets of the desired width, is several inches longerfthan the width of main Iframe of the machine required to house what is known to the tradeas the standard keyboard and otherY mechanism.

It. also so happens that by omitting the end pivots, bearings and handles, and stillretaining a length of platen sutiicient to give a. written line of some Tt) to 74 spaces, as commercially required in. standard machines. i am enabled by the application of my invention totkeep the extreme length of the platen and its housing down to the minimum of the main frame which will house the standard keyboard. The application of my invention therefore materially reduces` the width of typewriting machines without reduction of their capacity.

.X further advantage of my .invention is that the elimination of end bearings and the mountingr of the platen in an open ended carriage, as exemplified in lligs. l, 2, 7, sheets ot' practically unlimited width may be inserted in the machine, as it is obvious that the sheet passed around the platen may extendany distance beyond either end of the platen without interference on the part of any element of the machine. As the extension of the paper on the end of the platen adjacent to the handle T, Figs. 2, 6, is placed makes it less convenient to manipulate said handle, I prefer, in the application of my invention, to provide for the extension of handle T which is accomplished in Fig t5 by telescoping the rod b, to which the handle is attached, into the shaft e, as has already been explained, this provides means for placing handle T beyond the limit of a sheet which projects materially beyond the adjacent cnd of the platen. At the end of the platen farthest removed from the handle T, Figs. 2, t3, there is absolutely no part ofthe machine to interfere with unlimited exten sion in the-width of the sheet.

Another advantage of the-axially adjustable handle T is that when said handle is pushed inwardly, the space (see Fig. (i) permits it to be brought within the lateral limit of the platen It, thus rendering it' more compact for packing purposes.

Figs. 3, 4, 5 exemplify the application of my invention to machines where reduction in space occupied by the machine is not a paramount object. This construction admits of retaining thc ordinary means of rotating the platen through the handle 'l` and ratchet wheel S, Figs. Jr, 5,placed upon a center coincident with that of ,the platen. The other end of the platen being pivotlcss t and mounted in an open end carriage so that sheets, long envelops and other articles written upon may extend any required amount on the one end.

"A still further advantage of my invention asexcmpliticd in Figs. 1, 7 is that the platen maybe readily removed from its housing in the direction indicated by arrow' w and may beas readily replaced, the elasticity ot' the springs Q, Q allowing the rolls t),V ()to rc cede sutlicicntly to permit the platen to pass between rolls O, O and N. As examples of the advantage ati'orded by the convenience with which theplaten may be removed and inserted may be mentioned the opportunity it atl'ords for replacing a platen at any time by one of softer or harder material, according to the requirements of various kinds of work. It also admits of the substitution of mailing tubes, o1' other articles with a cylindrical surface in place of the platen and writing directly 4on them, the open ends of the carriage permitting the insertion. of an article-of practically unlimited length. For such purposes it is obvious that the open ended carriage without the platen is a coinplete device.

In the application of my invention I do not limit myself to the exact construction herein shown and descirbed, as many modi- Iications in details will be apparent to the artisan versed in the art, and various modifications may be madewvithout departing from the spirit of my invention.

.Ilaving thus describedr my invention, I claim as new and desire to secure by Letters Patentl. The combination with a platen, of a plurality of links pivotally mounted, one of said links being provided with suitable operating connectidns with said platen to transmit the line-spacing,r movements to said platen, and a line-spacing lever pivotally connected to each of said links, one of said links constituting a movable fulcrum for said line-spacing lever.

2. rlhe combination with a platen, of a pluralityaof links pivotally mounted, one of said links being provided with suitable operating connections with said platen to transmitthe line-spacing movements to said platen, and a line-spacing lever pivotally connected to cachot' said links, one of said links constituting a movable fulcruni for said line-spacing lever. the pivotal axes of said links being distant. from the rotary axis of said platen. l

3. 'l`he combination with a platen, of a ratchet wheel, operatively connected up with said platen, a pawl for said ratchet wheel, a member carrying said pawl, a line spacing vlever connected to said pawl carrying member.. and a link connectedat one end to a lixed pivot and having itsl other end pivotally supporting said line spacing lever.

4. rl`he combination with a pla'ten,A of ay ratchet. wheel operatively connected up with said platen. a pawl for said ratchet wheel, a membercarrying said pawl, a line spacing lever connected to said pawl carrying member. and a link connected at one end to la fixed pivot and having its other end piv otally supporting said line spacing lever, said line spacing lever being curved and,disA posed cmicentrically with said platen.

5. The combii'iation with a platen, 0f a lim) ,paper feed roll rotatably supporting said i platen, a ratchet wheel geared to said feed roll, a pawl for driving said-ratchet wheel, a level' for mounting said pawl, a line spacing lever pivoted at one end to the pawl mounting lever, and a fulcrum link having one end pivoted on a fixed axis and its other adjustable member' carrying a pawl 'releasing stop and a. stop for limiting the return movementof the pawl carrying lever, and means-for moving the pawl carrying lever.

8. The combination with a platen, ol

`members pivotall y mounted on axes parallel 'to the axis of said platen, a lme spacing lever connected to each ot' said members, a ratchet operably connected to said platen, and a pawl carried by one ot' said members for driving said ratchet.

9. The combination with a platen, of members pivotally mounted on axes parallel to the axis'otl said platen, a line spacing lever connected to each of said members, a ratchet operably connected to said platen, a pawl arried by one of said members for driving said ratchet, and a stop, said pawl being provided with a portion suitably arranged to be engaged by said stop to remove aidpawl from the ratchet in a predetermined position of said member.

mounted, a. pawl carried by said lever for driving said ratchet, a line-spacing'lever connected to the pawl-carrying lever, and aw movable t'ulcrum for said line-spacing lever,

`said i'ulcrum moving simultaneously with said line-spacing lever during the line-spaeing movement.

l5. The combination with a platen, of a ratchet connected thereto, a pawl for actuating said ratchet, a lever for arrying said pawl, a line-spacing lever connected to said 4pawl-carrying lever.` and a movable mount4 for said line-spacing lever, said line-spacing lever aml said mount therefor being movable simultaneously and producing the linespacingoperation.

lt. ',lhe combination with a platen, of a line-spacing handle. and' means l'or connecting said handle to said platen, said connecting means being adapted to permit an endwise movement to said handle relative to vthe platen and to hold said handle against wise movement to said handle relative to the platen and to hold said handle agalnst rotation relative to the platen during such endwise movement, said connectinfr means including a member geared to said platen and a slip ljoint connection between said member and said handle.

1S. The combination with a platen, of a line-spacing handle adjustable endwise relative to the platen, means for supporting the platen, and means for connecting said handle to the platen and permitting an endwise movement relatively thereto, while preventing a relative'rotation with respect to the platen. i

CHARLES W. lBARNABY.

Witnesses Jacon Fisium, Mv F. CoM'roRs.

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