US1011924A - Type-writing machine. - Google Patents

Description

J. D. DAUGHERTY. TYPE WRITING MACHINE.

APrLIoATIoN FILED 00T1 21, 1905.

J. D. DAUGHERTY.

TYPE WRITING MACHINE.

APPLICATION FILED 0012.21, 1905. 1

1,01 15924, Patented Deo. 19, 1911.

3 sIIETs-SIIHBT 2.

J. D. DAUGHERTY. TYPE WRITING MACHINE.

. AP-Pmouon Hmmv 90T. 21, 1905 `Patented Dec. 19, 1911.

l 3 SHEETS-SHEET 3.

vbeing had therein to the muren s'rnr rnrnnr orrion.

JAMES DENNY DAUGHEBTY, OF KITTANNING, PENNSYLVANIA, ASSIGNOR TQ UNIOI'I'v TYPEWRITER COMPANY, A CORPORATION OF NEVI JERSEY.

TYPE-WRITING MACHINE.

Speccation of Letters Patent.

Patented Dee. 19, 1911.1

To all whom it 'may concern:

Be it known that I, JAMES DENNY Danennn'rr, a citizen of the United. States, residing at Kittanning, in the county of Arn-strong and State of Pennsylvania, have invented certain new and useful Improvements in TypeJWriting Machines, of which' the following is a specification, reference l accompanying drawings. lVhile the key of a writingv machine is v depressed at` an approximately'7"'V 'uniform l speed throughout its'stroke, it 12s-desirable vment, thereby avoiding that the type-bar shall start from its position of rest at relatively low speed andin- -crease as the-type approaches ther impression surface. Such arrangement insures rapid action and positive clearance'ofthe In embodying this principle in my improved type-action, I have so l arranged the cooperating key and type-actuating levers that while the keyv lever'is'bei'ng depressgdf the point of engagementbetween the levers shifts in such manner as to moveM the typ-actuating lever-at increasing speed," As the levers, of the several banks of keys of a writing machine vary in length, their throw varies if a uniform depression is maintained throughout the severalv banks. In my iuproved type action this variation, as well as variations -in-the throw of the type-actuating levers of different' lengths,-`is provided for by varying the shifting en-I gagement of the cooperating levers.

-A further purpose of the invention is'l t0 provide for holding the cooperating levers in positive engagement at all times without interfering with their independent .movelost motion and preventing the type-bars. from jumping or -rebounding from their position of rest. y

Still a further purpose is to provideimproved means for mounting the type-action `levers, one of the advantages incident thereto being that any lever may he removed and replaced without disturbing the vers.

In the 4accompanfyingdrawings, vFigure 1 is a view in elevation 4of the improved type action at rest, two key levers, one of the shortest andone of the longest, being. shown. Fig-2 is asimilar View of a single setfof other le- -edge 3 in engagement with the type-action levers, showingthe position when making an impression. Fig'. 3- is a rear elevation of the type-actuating levels and bearing plates. Fig. Lis a detail view' of the same. Fig. 5 is a face view of one of the bearing plates. Fig. 6 Vis a sectional View ofthe mechanism for adjusting and securing the bearing plates. Fig. 7 illustrates a type 'action of modified form.

In the preferred embodiment of the ini vention the key levers are of bell-crank or angular form, the key arms 2 thereof being' arranged in a suitable number of banks, four being here shown.

3 designates the depending motion-trans mitting arm of'eaoh key lever, having" its rear edge 3 of convex or rocker form, as

shown. l

4 is the -lever-.fulcruml Coperating witheach key lever-is auxiliary or typejactuating lever or subf lever 5, having fulcrum 6 at its lower 'end and at its upper end connected by link 7.

vwith type-bar 8. The normal position of` the latter is. approximately horizontal, the same being pivoted on segmental rod 9 and arranged to strike against the front of platen P. Levers 'vary in length, their upper ends forming a segmental line as; shown in Fig. 3, which is com'plementary'- with the segment-al "series of type-bars. Each of the levers 5 is preferably furcated -or bifurcated and has a straight edge contact-face 5,fwith whichl the curved Contact' of the arm 3 engages, thereby providing -a rocking or rolling contactor ens.

'ga-gement between the two members 3 and 5 of each type action. The same result may be secured by curving edge 5 instead of 3'-, or by curving both ofsaid edges.. The areV rangement is sud-h that whenA the key lever-l is at rest, the upper portion of" lever-edge 5', lo: that part vfarthest fromfulcrum 6, is rocker edge 3 at a' point which is nearer 4fulcrum 4. than at anyother time. During'the depression of the key lever, said point of en, l;age mentl shifts away from fulcrum l and toward fulcrum 6,' with standing a uniform downward movement of the result that notwiththe key, lever 5 is actuated at increasing speed, a speed which isV slowest-When the' type-bar start's'from its position of rest and mostrapid-When the type is in close prok- .typeactnating .lever-is moved at increasing speed, the point .of contact between the iev'dersgshifting toward the type-actuating lef/l' fulcrumla-nd away from the key lever fulrumjwhile thelatter is being depressed.

fltlnfa'type action, a key lever and a ype-actuating lever both arrranged in the .saine Vgeneral plane and in direct shifting engagement, one of the levers having an extendedfpart embracing the other lever for holding the levers in constant and positive engagement. i Q

2. 'In a type action, a key lever having a Vprojecting armha type-actuating lever em- 'bracmg and in positive shifting engagement with the key lever arm, whereby one lever cannot move independently of the other, and a type bar independent of but lactuated by said type-actuating lever.

'3. In a'type action, a bell-crank key lever, and atype-actuating lever in shifting engagement with one arm of the key lever between the lever ulcrums, the type-actua'e' iiig lever having an extended part embracing said key lever arm for holding the levers l1n engagement.

4.. In a type action, a key 'lever and a type-actuating lever in shifting engagement, and an arm extending from the key lever adapted to engage the type-actuating lever l,when the Akey lever is /in the normal position.

'-5.. In a type. action, a bell-crank key le.

ver `fulcrumed adjacent the juncture of its arms, 'one 'of said arms eritendi'ng downwardly, a type-actuating lever in operative engagement with said downwardly extending arm, and an arm extending rearwardly from the key lever fulcrum adapted to interlock with the type actuating lever when the levers are in normalposition.

.6. Ina type action, a key lever, atypebar, an, auxiliary lever fulcrumed at one end and at its opposite end operativelyconiiected to the type-bar and' between its ends in shifting engagement with the key lever,

an arm on the auxiliary lever embracing the key lever, and an arm on the key lever adapted to interlock with the auxiliary lever when `the key lever is in the normalposition.

7. In a type action a key lever, a typeactuating lever operatively connected to the key lever, an arm on the key lever, and anarnbengaging point on the type-actuating 1 lever adapted to -be engaged by said arm' a spring connected .at one end to the typeactuating lever and at its opposite end to vrelaxed to afford the movement on the rods to permitof the rel0. In a type action, a series of banks, of l key levers, type-actuating levers in rocking engagement with the key levers, the'rocking engagement with the key levers of each bank being different and depending on the length of the associated actuating levers. ll. In a type action, key levers, type-actuating levers of diiierent lengths in rocking engagement with the key levers, the pitch or curvature lof the engaging members varying with the length of the actuating levers.

l2. In a type action, a series of banks of key levers, each level` having a key arm and a motion transmitting arm, the respective arms of the'levers of each bank being of corresponding lengths, said arm lengths differing in the diierent'banks, and typeactuating 'levers in shifting engagement with 'the motion-transmittingy arms Aof the keyv levers. y

13. In a type action, key levers each having a key arm and a curved motion-titansmitting arm, type-actuating levers of different lengths in rocking 'engagement with banks, and type-actuating levers in rocking engagement with said curved motion-transmitting arms, the curvature of the latter varying with' the. varying lengthsof typeactuating levers.

l5. In a writing machine, a support, a

'series of spacing members strung thereon,

adjustable securing means common to all the spacing members whereby the members may be either clamped together or loosened for the separation 'of any two adjacent members, and typev action levers mountedv between adjacent members and' removable therefrom when the members are loosened.

16. In a writing machine, a frame,.rods therein, a series of plates loosely strung upon the rods, type actionl levers between and removably fulcrumed to adjacent plates,

means operating when plates sulicient lateral j and plate clamping moval of the levers from between the, plates withoutremoving the plates and rods, from the frame. Y

17. In a type action, separable plate-like spacing members, and a key lever and a type-actuating lever in shifting engagement ofthem may be separated for the 'removal or insertion of a type action lever, and a key lever and its associated type-actuating lever mounted between. adjacent members and adapted to be removably held thereby.

19. In a writing machine, rods, a series of laterally movable bearing members mounted side by side on the rods, securing means tor rendering said members laterally movable at will, and akey lever and a typeactuating lever between diiierent portions ot adjacent vmembers and removably fulcrumed thereto. l

Q0. In a writing machine, a frame, titansverse rods \vithin the rame,-one higher than the'otherf-upright plates loosely strung upon the rods, means for securing the plates, key levers fulcrumed between the upper portions'of the plates, and type-actuating levers ulcrumed between the lower portions of the plates and in operative engagement with the key levers. j

21. lIn a writing machine, a series of upright combined spacing and bearing members, type-actuating levers ulcrumed between the lower portions of adjacent members, key levers fulcrumed between the upper portions of adjacent members, each key lever and its associated type-actuating lever having cooperating bearing faces of such.

form as to create a rolling contact when the key lever is moved.

22. In a writing machine, a series of upright combined spacing and bearing members, type-actuating levers fulcrumed at their lower ends between the lower portions y Aof adjacent members, and bell-crank key levers fulcrumed between the upper portions oi adjacent members .withan armor each lever depending between the members, said arm and the associated type-actuating lever having cooperating faces formed to create a rolling contact when the key lever is moved.

28. In a type action, a key lever and a type actuating` lever mounted to swing in the'same plane and 'in direct and constantly positive interlocking shitting engagement with each other.

24. Ina writ-ing machine, rods, bearing members movable on the rods, type-action levers between and fulcrumed to adjacent members, sleeves movable on the rod-ends and projecting therefrom, and` adjusting means engaging the sleeves.'

- 25. In a writing machine, rods having 1,01 noaa type-actuating lever in direct and constantly positive interlocking engagement, the key lever having a rolling contactwith the type actuating lever. l

27. In a type action, a key lever anda type-actuating lever, one of said levers having a rolling contact with the other and one of the levers having an extended part embracing the 'other lever for holding the le- Y vers irl-constant .and positive engagement.

28. In a typewriting machine, the combination of a series ofsub-levers, a series of key levers of ditlerent length having a rollengaging arms votthekey levers being increased or, decreased proportionately to rthe increase or 'decrease inthe length of the key4 carrying arms of said key levers.

29. In a typewriting machine, the combination of a series of upright sub-levers which are gradually longer as the sides of ving engagement therewith, the length 'of the l l the system are approached, a series of cooperating key levers of different lengths engaging said sub-levers, thev length or' the engaging arms of the key levers varying proportionately with the variation in 'he length of the key vcarrying arms of said levers, and a curved contact face between each pair` of cooperating levers, the curvature of the contact faces varying according to the lengths of the sub-levers to afford a uniform dip of the v.keys and a uniform extent oi' movement of the actuating ends` of the sub-levers. Y y y 30. In a typewritingmachine, the combination of a type bar, a sub-lever, and a key' llever that has a rolling engagement therewith, said sub-lever having portions that en- Agage the key lever on opposite sides thereof.

.31. In a typewriting machine, the combination of a type bar arranged to swing upwardly and rearwardly, a substantially u'pright Jurcated sublever pivotally supported at its lower end'md operatively connected at its upper end to the type bar, and ,a key v lever having a substantially upright Vpart in contact with the' front side of ,said

sub-lever at the furcated portion thereof and acting to vibrate the sub-lever from its normal position with an accelerated motion.

32. In a typewriting machine, a type-bar 4arranged to swing upwardly and rearwardly, a pivoted upright auxiliary lever operatively connected to the vtype-bar at its upper end, a key lever having an upright lpart in rolling contact with the auxiliary lever, and means whereby the key levers' resist the movement of the type bars and auxiliary levers when the key levers are at their normal positions. v

33. Ina typewriting machine, a type bar arranged to swing upwardly and rear wardly, a pivoted upright auxiliary lever operatively connected to the type bar at its. upper end, a pivoted key lever having a 'rocking connection with the auxiliary lever acting to vibrate the said lever with an acl celerated motion, and an arm'onone of the -levers bearing. againstftheother lever to l'limit the reboundof the type bar when it.

Y g returns to its normal position.

. :34. `In a typewritingmachine, a type' bar .arranged to swing upwardly and rearwardly, a horizontal-key lever pivot-ally supported at its rear end', and having a Y pendant arm adjacentthe pivot, and au auxiliary lever pivot-ally supported at -its .lower end having two arms, one of said arms 4forming a point of contact with the front of the pendant arm,lthe other arm of the auxiliary lever forming a rocking Contact with the 'rear of .the pendant arm and extending upwardly in operativeconnection .with the type bar.

l 35. In a typewriting machine, a series of 'type barsarranged to swing upwardly and rearwardly, of a series of upright pivotally supported auxiliary levers of graduated lengths operatively connected to the type bars, and a series of pivotally 'supported key levers of different lengths having upright parts in rocking contact with their auxiliary levers, the rocking parts being of different form to equalize the travel of the .upper ends of the auxiliary levers.

.3 6.`In a. typewriting machine, a series of type bars arrangedto swing upwardly and rearwardly, a4 series of upright pivotally supported auxiliary levers of graduated lengths operatively connected to the type.-

bars, and a series of pivotally supported key levers' of different lengths'having upright parts in rocking contact with the 'auxiliary levers, the rocking parts acting pivota-llymounted type bar, a sub-lever cone` nec'ted with the type-bar, a key operated lever adapted to engage the sub-lever at successive points as it -is operated, and a spring connecting the sub-lever and key op. erate-d lever;4 v

In testimony whereof I ax my signature iin presence of twowitnesses.

JAMES DENNY DAUGI-IERTY.

Witnesses ISAAC MILLER, JAMES H. MCCAIN.

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