US819782A - Type-writing machine. - Google Patents

Description

PATENTED MAY s', 1906.

H. A. MOYER & E. G. LATTA. TYPE WRITING MACHINE.

APPLICATION FILED AR. 1B. 1905.

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PATENTED MAY 8, 1906. H. A. MOYBR L E. G. LATT-A.

TYPE WRITING MACHINE. APPLIOATION FILED APR.18.1905.

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WJTNESSES.-

PATENTED MAY 8, 1906.

H. A. MOTTA A LG. T.ATTA. TYPE WRTTTNG MACHINE.. APPLICATION FILED APB... 18. 1905. v

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i vLfm//ley PATBNTBD MAY 8, 1906.

H` A. MOYER L E. G. LATTA. TYPE WRITING MACHINE.

' APPLICATION FILED APR.18. 1905.

4 SHEETS-SHEET 4.

W1 TNESSES.-

PATENT OFFICE.

HARVEY A. MOYER- AND EMMIT e; LATTA, F sYRAoUsE, Naw YORK. TYPEWRITING IVIIACIHINE.

Specification of Letters Patent. Anuman nea April 18,1905.- serni No. 256.203.

Patented may s, 190e.

To aZZ whom it may concern:

the accompanying' drawings, is a full, clear,

and exact description.

This invention relates' to im rovements in type-writing machines of the c ass commonly known as visible or "rontstrike machines, 'and refers .morel particularlyl to the type-bar action andl its associated-mechanism, including the platen-shifting and ribbonvibrating mechanisms, v

In this class of machines the type-bars are pivoted in a circular are below the platen so' as to strike at one and the same printingoint, and in the employment of a single key.- board each type-bar' is provided with a plu-A rality of type, and its supporting-segment is s'hiftable, so as to bring either type' of the same bar to one and the same printing-point when operated.

One of the primary objects of this inven-v tion is to bring all of the parts into compact arrangement and still leave ample clearance ,for the freeV action and adjustment oany one of the parts without interference with the others.

Another object is to provide a typebar action which may be operated under an exs tremely light pressure and movement of the keyand in which the ty e-bar is thrown to the printing-point un er an accelerated movement and is locked inits position of rest aga-inst rebound.

A further obj ect is to provide s ecial mechanism to prevent the entrance o .dustor dirt to the type-bar and link-bearings and at the same time to aiiord a simple and durable bearing for each type-bar which is independent of the others and enables any one typebar tobe removed without distu bing the bearings for the other bars.

A still further object is to `providea comparatively `light universal bar within the beingto secure the instantaneous vlbration ofthe ribbon just'before the type reaches the printing-point, so as to avoid any load upon the initial movement of the key in throwing its type to the printing-point.

Another object is to support the type-har' segment free from the mainframe so as to avoid the use of guides or similar power-con suming friction devices and still maintain the segment in o erative position against endwise' or latera movement or vibration.

Other objects relating. to the specific mechanisms hereinbefore mentioned will be brought out in the following description.

In the drawings, Fi re 1 is a top lan of l the greater portion o our improve typewriting machine below the platen, portions of the frame being broken away and some of the type-bars and their actuating mechanism being omitted to show more clearly the construction and operation'o the several mechanisms. Fig; 2 is a longitudinal vertical section through the machine seen in Fig. 1, showing in addition thereto the platen. Figs,- 3 and 4 are detail views of a portion of one of the type-bars and its hanger and dust-guards. Fig. 5 is a plan of the sprin dust-guard seen in Fig. 3. Fig. 6 is a side e evation of a ortion of one ofthe type-baractuating mec anisms, including `the key and its supplortingbracket. Fig. 7 is a rear elevation of the typ e-bar-suy porting segment and other mechamsrns at t e rear ofsaid-segment, including some of the intermediary evers and their supporting-segmentsand also the universal bar and ribbon-vibrating mechanism. Fig. 8 is a front elevation of the type-barLsupport'- ,ing segment, showin some o the individual t e-bar hangers an one of the t e-bars as t own to the printing position. top plan of the'type-bar-supporting segment and 1ts su porting and shifting means, show' ing also t e support for the intermediary le- -vers and the universal bar and parts attached thereto.

s This machine comprises, essentially, a rectangular frame 1, a platen 2, and ribbon 3; a typebar-supportin segment 4, upon which is pivoted a series o type-bars5; a-second circular segment 6, upon which is pivoted a series of intermediary levers 7, and a series of keys 8, which are connected by draw-rods 9 to the intermediary levers 7, the latter le-A vers `being connected to their respective typebars by means ofthe links 10..

The main frame 1 is especially adaptedto 'conform to-the compact arrangement of. the various mechanisms and is preferabl -rec.

ig. 9 is a" roo tangular kin top plan and provided wit suit- A able corner-posts 11, the iront inclined extension'l12, in which the keys 8 are located, anda top 13, having tsrear portion depressed at 14 to receive the platen 2while the front portion is substantially fiat and receives suitable casings 15 Jfor the ribbon reels or spools. vided with suitable rubber feet 16 `ior a purpose well known, while the front end of the vtop is provided with a depending shield 17 and a suitable type-bar rest 18, which is located just at the rear of the shield, said shield being disposed lin an are concentric with the type-bar rest 18 and is of sufficient depth to conceal the front ends of the typebars. f

The platen 2 may be mounted upon any suitable carriage, not necessary to herein illustrate or describe and is only shown to indicate-its position with reference to the frame and type-bars and also to showthe association between the platen and supportingframe, particularly with reference to the depression v14, by means of' which the platen may be iiiateriallv lowered.. Y

The ends of thc ribbon 3 are wound upon suitable spools or reels, (not shown,) but which are located within the casings 15 at opposite sides of the center ot the top 13, and the'intermediate portion oi said ribbon is supported close to the platen in a suitable guide 20, which is mounted upon the free end ol a vibratory frame or support 21, ex-

tending downwardly and rearwardly under the platen 2 and secured at its rear end to a rocking frame 22. This 'l'rame 22 is pivoted at 23 to the top of" the mainframe and is provided with an viipwardly-projecting escapement-pawl 24, which is adapted to coact with any suitable escaiiement mechanism. (N ot 'necessary to herein illustrate or describe.)

f The type-bar-supporting segment 4 is disposed below and slightly in iront of the platen 2 and consists of acircular segment of' a metal ring inclining upwardly and rearwardly from its lower central portion and having its upper and lower edges formed l with beads 25, which are slotted at intervals at 26 to receive a number of individual hangers 27 Jfor the type-bars 5. Thesefslots 26 are disposed 1n radial lines extendingr `from the printing-point at the iront 'tace of the platen and are cut back to the base of the beads to receive the individual hangers 27 and hold theni separated one'from the other. It

therefore follows that these several hangers 27 are also disposed 'in radial lines from the printing-point. Each oi said hangers consists ot a comparatively thin 'strip of metal' closely in -its slot 26 and thickened fitting centrally for receiving an'individ ual .clamping-screw 2X, as best seen in Fig. 2 and 8, the upper ends ol said hangers extending beyond the upper bead 25 and terminating in anl are concentric with the segment 4. It is The corner-posts r11 are proto remove any one of the screws,

without disturbing any oi the other hangers.

or the type-bars which are supported thereby. Another advantage in mounting the hangers in the manner described upon the Jfront face of the segment 4is that the screwheads face the open front of the machine in alinement with the space between the bottom of the shield 17 and upper row of keys 8,

l so that a screw-driver or similar implement may be readily inserted through such space and thereby permit the removal of any one of the hangers and its type-bar without in any way disturbingv the position of the other type-bars or hangers.

In ,this class of machines having a single 'keyboard and in which the type-bars are provided with two or more type it is 4necessary to shift either the platen or the segment-to enable either yof the type to be brought to one and the same printing-point, and in this instance we have shown the segment 4 as shiftable and as mounted upon iront and rear supporting- levers 30 and 31, land in order that these levers may not interfere with the operation of the other mechanisms of the machine the opposite ends of the segment 4 are provided with depending arms 32 and with lugs or ears 33, the derearwardly-projecting pending arms 32 being spaced` apart-a suficient distance to permit the interposition ot' the draw-rods 9 and still leave ample clear-v ance for the free operation of the several draw-rods and movement of the segment 4 without friction or interference one with the other. This segment-shifting'mechanism is best seen in Figs. 1, 2, and 8, and it will be observed that we provide two of the lowerlevers 30, one at each side of the frame and a corresponding number of the upper support- ITO ing-levers 31, whichare similarly located at opposite sides of the main frame, or rather at the opposite ends of the segment 4. The

'lower levers 30 are pivoted at 34 to the main frame 1 in Jfront of the segment 4, and their rear endsare pivoted at 19 to the lower ends of the arms 32,' the front ends of the said levers 30 being connected to a lforwardly-extending U-shape frame 35, having suitable {niger-keys S6, whereby the frame' and levers 30 may be rocked upon their fulcrums 34 to elevate the segment 4. The upper pair of levers 31are pivoted at their rear ends at 37 to the main frame 1, and their front ends are pivoted at 38 to the rearwardly-projectinglugs or ears 33 on the ends of the segment 4, the distance between the fulcrum 37 and pivot 38 of the-levers 31 being substantially equal to the distance between the fulcrums 34 and pivot 35 of the levers 30, and both faces of the rear end ofthe type-bar proper to depending circulars ears 44, which are of tween the opposed side plates 43 and of a to the combined width of the head of the of these levers 30 and 3l therefore move through equal arcs in the o eration of shifti'ng the segment and throng equal distances above and beneath radial lines drawn at. right angles to the plane of the segment 4 through their fulcrums,so that the segment stands in the same plane in both its upper and lower positions. The type-bar sevment is therefore supported solelvby the evers 30 and 3l between the sides of the main frame, so as to have a free u -and-down movement without the use of en guides or bearings, thereby reducing the resistance by friction and consequent loss of power incidental to the use of guideways or end bearings. Each pair of levers 30 and 31 is connected by transverse bars 40 and 4l to stiifen or brace them against torsional or lateral strains, and thereby more firmly sustain the segment against endwise vibration or displacement.

The upwardly-projecting ends of the hangers 27 above the segment 4 are preferably circular, and the rear Aends of the ty e-bars 5 are each provided with asheet-meta hood 42, which is folded upon and secured to opposite form opposed side plates 43 and an intervening space substantially equal to the thickness of the type-bar and upper circular end of the hanger, said side plates being provided with slightly-greater diameter than that of the circu ar head of the hanger and are pivoted to opposite faces of said hanger concentric with its circular head. The object in making the ears 44 of slightly-greater diameter than the circular head of the hanger is to permit the use of a semicircular dust-guard 45, constituting-a split spring-band which is inserted -between the opposed plates 43 of the typeown tension against'the periphery of the ears 44. The portion of this dust-guard between its ends is reduced in Width at 46 to substantiallythe width of the intervening space belength substantially equal to the width of the portions of said plates between their pivots and type-bar, while the opposite ends of the dust-guard have a width substantially equal hanger and opposite ears 44, so that when the dust-guard is inserted between the opposed plates 43 by turning it edgewise vertically and then tilting itsconcave face downwardly the reduced portion 46 lies between the plates, While the opposite Wider ends cover the joints between the plates arid head of the hanger and effectively exclude the dust from such joints. When this split spring dust-guard is placed in operative position, it automatically seats itself against the periphery ofthe ears 44 by its own tension,a.nd is therefore selfretaining' and moves with the type-bar around the circular upperface of the hanger,A

l but not in contact therewith, by reasonof the larger diameter of the ears 44, which hold the spring a slight distance away from the hanger. The forwardly-project-ing ends of the side plates 43 are reduced in width to about the width of the adjacent end of the type-bar properand` are rigidly secured to said type-bar by suitable rivets 5; but the rear end of the type-bar proper is made to terminate a short distance from the rear end of the hood 42, so as to leave a space opening fromthe rear end of the hood, in which space is pivoted at 10 the front end of the corresponding type-bar-actuating member or link 10. These links 10 extend rearwardly from the heels of their respective type-bars and are pivotally connected to their respective intermediary levers 7 above the fulcrums of the latter, which are in turn pivoted in a circular arc upon the circular segment or comb 6, both of which are arrangedconcentric with the 4arc in which the type-bars are pivoted.

Thesegment or comb 6 is rigidly secured to thernain rframe of the machine and is provided witha series of radial slots 47, receiv-` ing the levers 7, which are fulcrumed inter- I mediate their ends upon a common Wireor pivotal support 48, each lever having an opensided slot or bearing 49 in its front face or side to receive said pivotal wire and to permit each intermediary lever to be readil assembled or removed from saidwire wit out disturbing the others. These intermediary levers 7 are all of the rst order and extend some distance below their fulcrums, and their lower ends are connected by the draw-bars 9 .to their respective keys 8 through the medium of a pair of parallel key- levers 50 and 51, which are pivoted in planes one above the other u on suitable su portin -brackets 52.

It wi be observed t at the ower ends of the intermediar levers 7 to which the drawbars 9 are attac ed are disposed in a circular arc transverselylof the machine, and therefore the levers at`the ends of the arc are ele- IOO IIOl

vated a considerablel distance above those at the center, and-wesprefer to kee the drawbars 9 in as nearly a horizontal p ane as possible, and for this purpose the draw-bars 9, which are connected to the intermedia levers at or near the center of the arc 6,1h7ave theirforward ends connected to the lower levers 50, while those which are connected o the intermediate' levers nearer the ends 'of the segment 6 have their front ends connected to the u per levers 51, which are extended rearwar ly from their fulcrums for this purpose. y

Where the lower levers 50 are connected to the draw-bars, the upper levers terminate at their fulcrums, and, on the other hand, Where the upper leversare connected to the drawbars the lower levers 50 terminate at their fulcrums, and in both cases where the levers are connected to the drstw-bars; these levers ISO are of the first order-that is, they extend I the ty e-bar and its actuating-link 10 to pre# forwardly and rearwardly from their fulvent tiie entrance of dust in the bearing and crums, the rear ends being connected to the that the spring dust-guard 45 serves a similar draw-bars, while the front ends are pivotally purpose of protecting-the joint between the S connected to the keys 8. heel of the type-bar or ears 44 andhanger 27. 7c We have`previously stated that the levers By mounting the keys 8 in theinanner prev5() and 51 of eachpair are substantially parallel viously described upon the ends of parallel leand project forwardly equal distances from vers it is evident that aparallel key-motion -their fulcrums, and the keys 8 are provided is provided and that by connecting this key io with depending stems 53 and are pivoted to so as to affordv an accelerated action of the 75 the forward ends lof the levers 50 and 51, so type-bar from its position of rest to the printthat by depressing one Aof the keys the forving position'the key may be depressed under l Ward ends of both of its supporting-levers`50 an extremely light touch and at the same and 51 are depressed, and the rear ends of the time always travels in a vertical plane. An-

15 levers which are connected to the draw-bars other object of this accelerated movement of 8o consequently throw upwardly and forwardly, the type-bar is that the momentum given thereby rocking the levers 7 upon their fulto the type bar in throwing it from its c'rums and actuating the corresponding typenormal to its printing position is utilized bars through the medium of the connectingthrough the medium of the' intermediary lezo links 10. Each of the keys 8 and its'correvers to operate a universal bar or bail 57, 85 sponding type-bar and actuating mechanwhich in turn is connected to actuate the ribisml is returned to its normal position by bon-vibrator. In order to accomplish this means of a spring 54, which has its upper end without adding any appreciable load to the connected to the upper lever 51 near its fultype-bar action, the lever 7 is providedwith 2'5 crum, while its lower end is connected to the an upward extension 58, which when the 9o lower lever 50 near its pivotal connection type-bar is thrown to the printing position with the key, whereby when the key is dehas a rapid rearward movement and only enpressed the spring is tensioned, and such tencounters the universal bar near .the limit of sion operates to restore the key and its consuch movement, so that the levers -7 move 3o nections with the type-bar to their normal freely through the greater part of their stroke, 95 pOStOIiS. at which time the type-bar has acquired its It will be observed of the draw-bar 9 that maximum momentum, and this operates to the pivotal connection with the keylever 50 further impel the upper ends of the levers 7 is nearly ina direct line between the fulcrum rearwardly until they engage and operate the 3 5 of said lever and connection of thedraw-bar universal bar 57 without any extra pressure ioo with the intermediary lever 7, andtherefore upon the keys. In order that this universal when the key is depressed the intermediary bar may operate as easily asl possible, it is," lever and its type-bar are thrown to the provided with rearward extensions 59, to printing position with an accelerated movewhich are connected upwardly-extending par- 4o ment and are also locked intheir normal poallel links 60, and tthese links are in turn pivio 5 sition of rest against rebound. This locking oted to the main frame at the rear of the uniof the type-bar in its position of rest is furversal bar. The forward links 60 are mountthcr facilitated by providing the bracket 52 ed upon a rock-shaft 61, to which is securedra with a rearward extension 55, having an inrearwardly-projecting arm 62, and this arm 4 5 clined front end for engaging the front end of 62 is connected by a link 63 to the ribbon-vii io the draw-bar when the operating parts return brating frame 22, and it therefore follows that to the norinal position, in which position the when the upper end of one of the levers 7 is inclined caineface on the rear end of the eX- brought into engagement with and operates tension 55 forms an abutment for the adjathe universal bar 57 vthe free end of the arm :o cont Aend of the draw-bar 9' to prevent for- 62 is rocked upwardly, and thereby rocks the 115 ward movement of the draw-bar, inits piv front end of the frame 22 upwardly upon the otal slot in the lever 50, thereby locking the pivot 23, this movementr being sufficient to intermediary lever and type-.bar against rebring the ribbon-guide 2O close to the front lJOUHdface of the platen 2, thereby forcing the rib-I 55 The brackets 52 are secured to and depend bon 3 into the path of the printing-type. no froin transverse bars 56, which in turn are This action of the ribbon-vibrator is almost secured to the sides ofthe main frame of the instantaneous and near the liniit'of the print machine and are spaced apart and stepped ing stroke of the type-bar` so that as soon as one above the other from front to rear ofthe the type-bar recedes from the platen the rib- 6o extension 1.2. bon-vibrator is at once freed and returns to x25' It will be seen upon reference to the foreits normal position. v 1 I I y n n going description tiiat the part 42, which is By pivoting the ribboii-vibrating frame Z2 made of a folded piece of sheet metal secured 'in a plane below and at the rear of the` platen to the rear end ofthe bar 5, fornis a hood for l it is evident that the printing portion of the 6g protecting the pivotal connection 46 between l ribbon is not only moved upward and downi 3o ward, but is also moved toward and from the front face of the platen, s as not to blur or otherwise soil thevpaper being printed upon when the type-bars are not in action.

In order that the universal bar may be given the same movement by each intermediate lever during the printing action of the type-bar, the upper ends of the extensions 58 which contact with the universal bar and also the universal bar are disposed in circular arcs concentric with the arc inwhich the intermediate levers are pivoted, and the operating ends of said intermediate levers are therefore equidistant fromtheir fulcrums, and the connections'between said intermediary levers and the keys are also so arran ed as to move all of the levers 7 through equa arcs, and therefore each intermediary lever produces the same action upon theribbon-vibrator In Fig. .6 of the drawings we have shown4 a key and its stem in section. The key-stem consists of a light sheet-metal 'tube which is split longitudinally through one of its sides, and its upper end is expanded or swaged outwardly to form an annular shoulder or head 75, while the lower portion of said'stem is somewhat flattened or U shape in cross-section, so as to leave an open-sidedslot 76. in which the adjacent ends of the levers and 51 are inserted and pivoted to the sides of the flattened portion, so as to practically conceal the pivots, or rather the open joints, and the closed side at thefront of the stem serves a similar purpose and also presents a` neat ap-` pearance aside from its service in excluding .dust and dirt from the joint. The finger-key 8 is made of rubber or may be made of a composite material,` and if made of rubber it is placed upon the upper end 'of the stem, so as to inclose the head and subsequently vulcanized, thereby permanently attaching it to the stem. l

Upon reference to Fig. 7 it will be observedl that the ribbon-guide 20 has a central opensided slot 76, forming opposed arns, each of which is provided wit-ha vertical slot 77, and

the outer wall of each slot has a central transverse slit 78, through which the ribbon may be inserted edgewise into the slots 77. This formation of ribbon-guide aords an easy means of attaching the central portion of the ribbon to the guide without threading the ribbon endwise therethrough.

The associated parts of the several mechanisms hereinbefore described are particularly light and compact and at the same time are constructed with a view .to durabil-l tween the fulcrumf Said lever and the point 'firmly riveted to the side pieces.

.obviate any lost motion of the key, as 8, in

the operation of the type-bar, and at the same time to afl'ord approximately a togglelock in the flexing joint between the drawbar 9 and its actuating-lever 50 when the type-bar is at rest'to prevent rebound. Another important factor in 4maintaining ease of action and permanent alinement is they locatin of the'side plates on the heel of the typear so .as to lap` upon the side faces of the hanger and allow the pivotal pin to play freely in the hanger and at the same time be 'lt will also be observed that the universal bar 57 is of li ht tubular structure and is suspended Wolly by the swinging links 60, so as to have an easy parallel motion backwardly and f'orwardly, the engaging face of this tubular universal bar being located some distance y.below the pivotal bearin s for the links 60,

thereby affording an easy everage, which enables the universal bar to be actuated under an extremely light pressure, which makes it practicable to transmit motion from said levers 7 to the ribbon-vibrator. We have previously'intimated that the point of connection between the draw-bar 9 and its actuating-lever 50 has a slight lost motion', which is '95 accomplished by providing j an elongated bearing or slot in the end of the lever 50, the object of whichv is to allow theadjacent end of the draw-bar 9 to ride freely over the end or abutment on the extension 55.

The o eration of our invention is as follows: en it is desired to print with' the lower-case type, it is simply necessary to press the desired key 8, which has a parallel vertical motion andoperates the lever 50, 105

thereby drawing the lower end of the lever 7 forwardly through the medium of the drawrod 9, which throws the upper end or extension 58 of the lever 7 rearwardly'with an accelerated motion, and this accelerated molio tion is in turn transmitted to the type-bar through the medium of the link 10, which is connected to the type-bar above'its'pivot. As the type-bar continues its upward movement toward the platen with an accelerated i 15 motion the extension 58 is simultaneously traveling towardthe universal bar 57, andthe momentum given to the type-bar operates to carry the upper end of the lever 7 against the universal bar, thereby effecting 12o an upwardvibration of the central portion of the ribbon in front of the platen and in the path of the printing-t e. As' soon-as the printing operation )is e ected the type-bar and its actuating mechanism, including the, 125

key 8,' is returned to its normal position by the spring 54, and these parts are locked in their position ofrest by the engagement of the front end `of the draw-bar 9 with the abutment on the end'of the extension 55, the rib; 13o

IOO

bon-vibrating frame and1 universal bar returning to their normal positions by gravity,

of the keys 36 at the front corner or corners of the U-shape segment-shifting frame 35,

whe upon the rear ends of the levers 30 and segment 4Aconnected thereto are elevated the desired distance to bring the upper-case type to the same printing-point. The shifting mechanism of the segment 4 is limited by suitable stops 4',- and as soon as the pressure upon the keys 36 is revolved the segment returns by gravity to its normal posltion. It will be observed that the segment-supporting arms 30 and 31 move equal distances above and beneath lines drawn at right angles to the segment and passing through the\ ulcrums 34 and 37, respectively, thereby maintaining the segment in the same plane in both of its extreme upper and lower positions.

What we claim is 1. In a type-writing machine, the combination with a pair of opposed side plates, of a type-bar, an actuatin member and a hanger each having one en located between the side plates, and attached tl1ereto,-said plates being united above and covering the adjacent end of the actuating member.

2. In a type-writing machine, nation of a type-bar, and a hood composed of a piece of folded sheet metal rigidly connected to the bar, and

-pivotally connected to the actuating memer, and hanger and embracing between its sides, the adjacent portion of the bar, actuating 'memben and hanger.

In. a type-writing machine, the combination of a type-bar, its hanger, and actuating member, each consisting of a single piece oi' metal, with a sheet-metal hood rigidly connected to the bar, and pivotally connect-` ed to the hanger and actuating member said hood having opposite sides, embracing between them-the bar, actuating member, and hanger.

4. In a type-writing machine, the combination with a type-bar7 its hanger, and a rearwardly-extendin g actuating member pivoted tothe typebar, of a hood connecting the bar to its hanger, and covering the adjacent ivoted end of the actuating member.

5.' An a type-Writing machine, the combination with a `type-bar, its hanger, and actu# ating member, of. a. sheet-metal hood connectlng said parts and forming a dust-excluding cover` extending over4 the pivot of the actuating' member.

6. In a type-writing machine, the combination ith'a type-bar and hanger both substantally the same thickness, of a pair of opposed parallel side plates closely fitting the combiits actuating member,-

upon the sides of the'bar and hanger and pivotally connected to the hanger, and an actuating member ior the bar loosely pivoted between the side plates at a point above and in front of the hanger when the parts are in their normal position, said plates being united above the pivot of the actuatingv member.

7. In a type-writing machine, the combi-4 nation, of a type-bar, its hanger, and end actuating member pivoted to the type-bar,

with a folded sheet-metal hood extending over the inner end of the type-.bar and adjacent pivot of the actuating member and4 pivotally connected to the han er.

8. 'In a type-writing. mac ine, the combination with a type-bar and op osed side plates thereon, a hanger, a remova le sheetmetal dust-guard self-'retained between the side plates Aand projecting rearwardly over the hanger.

9. In a'type-writing machine, the combination of a type-bar and opposed side plates thereon, a central hanger, a curved sheetmetal dust guard arran ed .between the plates and constituting a c amp lby which it is self-retained between the lates.

10. In a type-writing machine, the combination with a type-bar, of opposed circular bearings attached to the bar, a hanger-located between the bearings and havingha circular l end of smaller` diameter than at of the bearings of the bar, and a separate spring-retained sheet-metal dust-guard closely itting between the bearings and concentric with the circular end of the hanger.

e 11. In a type-writing machine, the combination with a type-bar, of opposed pivotbearings having forwardly-projecting portions secured to the bar and of less width than' the pivot-bearings, a separate spring-retained sheet-metal dust-guard reduced in width betwce. its ends to iit lbetween the bearings and its ends of sufficient width to rest on the bearings .and exclude dust from the pivot.

12. In av type-writing machine, the combination with a type-bar, of a pair of opposed. ears, a hanger between the ears and a detachable' curved sheet-metal dust-guard of spring temper springing against. the periphery of said ears.

. 13. In a typewriting machine, the combination with-the platen of a series of pivoted type-bars arranged to strike toward the front of the platen, a shiftable segment mov- IOO IIO

able independently of the platen supporting segment, and means'for shifting the segment.

14. In a type-writing machine,'the combination loi: a series of pivoted type-bars arplaten, a movable segment supporting the ,ranged to strike toward the front of the type-bars,opposite arms pivotally connected the se ment.

15. n a type-writing machine, the combination with a platen, of a series of pivoted type-bars arranged to strike the frontl 'of the platen; and a' movable segment shitable Selparately fromthe platen and supporting t e bars, of ay air of opposite armspivoted to the ends o the segment and to the frame of the machine inrear of the segment on a line ata righ-t angle to the plane ofthe segment andmidwa between the upper and lower positions o the pivotal connection o'r' the arms to the segment, and means for shifting the vse ment.

16. n a type-Writing machine, the combil, nation with a series of type-bars arranged to strike the front of the platen, and a movable frame, and means for shifting the segment.

segment supporting the bars, of a pair o ar'ms pivoted to the u per part ofthe segment, and to the machineame in rear ofthe segment, one or more arms being pivoted to the lower side of the segment and to the machineframe in front of the segment, the frame-pivots being inall cases on a line extending at right angles tothe plane of the segment mide' Way between the 4Vupper land lower positions of the segment-pivots whereby the segment is in the same plane in either position, and means for shifting the segmen 17. In a .type-Writing machine, the combination with a platen, of a'series' of pivoted type-'bars arranged to strike the front of the platen, and a movable segment shiftable se arately from the platen and supporting tllie bars, of a pair of r1 'idly-connected arms' ivoted to the ends o the segment in af ane above its central portion 'and to the mac eframe in rear of the segment, and means for vibrating the segment.

18. In a type-Writing machine, the combination with a platen, of a series of pivoted type-bars arranged to strike the front of` the i platen, and a movable segment shiftable se arately from the platen and supporting t e bars, of two pairs `of arms, those of each pair being rigidly connected to each other and ivoted to the segment and to the machine- 19. In a type-'writing machine, the combination with a platen, of a series of pivoted t pe-bars arranged to strike the front of the p aten, and a movable segment shiftable se arately from the platen and sup orting tlli bars, of oppositearms pivoted to t e segment and to the machme-rame, a cross-bar of angular cross-section rigidlysecured to the arms between their connectionswith the segment and frame,

and means for shifting the segment.

ytion With'both levers, and a of the rodv when inits 20. Ina type-writing machine, a key-stem of tubular form havin(r its upper end expanded to form an enlarged:` head and its lower end flattened, a key attached directly to the enlar ed head, in combination with a type-bar an connections between the key and typevbar, one of which connections is secured to the ilat portion of the key-stem. 21. Inafront-strike type-Writing machine, a type-bar pivoted to strike upwardly and rearwardly, a bell-crank at the -front of the tipe-bar, amanual attached to one end of t e heli-crank, a ivoted link parallel with the o erating endp helica spring connectirigthe link and bellcrank and acting to return the bell-crank to its normal osition. 4

22. Ina ont-strikecty'pe-writing machine,

of the bell-crank, and a a type-bar pivoted to strike upwardly and rearwardly, a bell-crank at the front of thel type-bar, an operating-key connected to. one end .of the bell-crank, a pivoted link parallel with the bell-crank, one of the last-named arts being located above the other, and a iieiical s ring attached to one of said arts near its igilcrum and to the other of said arts farther away from itsy fulcrum.

23. A In a front-striketype-Writing machine,

a type-bar pivoted to strike upwardly and rearwardly, a key and parallel levers located one above the other at the front of the typebar and having corres onding ends connected to the keys, one of the levers being extended beyond its fulcrum and connected indirectly to its type-bar, and a helical s ring I oo having its o `posite ends attached to said levers at di erent distances from their fulcrums. 24. In a type-writing machine, the 'combination with a series of type-bars and fingerkeys, of separatev connections between each type-bar and its key, each connectio'n including a slotted lever and adraW-rod having one end pivoted in a slot of its lever to permit a limited endwise movement of the rod inde-I pendently of the lever.

25. In a type-writing machine, the combination of 'a type-bar and finger-key, connections between the type-bar and key including a lever and a connecting-rod joined together With a lost motion whereby the rod` pendently of the lever. l

` 26. In a type-writing machine, a type-bar action including a lever and a-draw-rod conmay move in the direction of its length indenected with'a lost motion constituting a iieX-` or abutment ening joint, and a fixed yst o gaged by the end of the ro to limit the movement of said rod when in its normal position.

27. In a t e-writing machine, altype-bar rio` action, inclu ing two leversA and an interposed cconnecting-rod havingvipJi-(votal conneced abutment engaged by one end normal position.

L28. In a type-writing machine', a type-bar concentric with, but of less radius than. the 5,5

action including a key and a lever actuated by the key and having a slot in one end, a draw-rod pivote@L in the slot and movable endwise therein, the'slot being disposed at an angle with the direction of extension of the rod.

. 29. In afront-strike'type-writingmachine, a type-bar having a plurality of type and pivoter to strike upwardlyand rearwardly, a platen and a segment, one of which partsis movable towardV and from the other in combination with a vertically-movable key-stem, a

. lever and pivoted to the key-stein, an individual hanger for said lever, a second lever connected to the ty e-bar, and aconnectmgrod pivoted to said evers.

30. In a front-strike type-writing machine, a ty e-bar action comprising a pivoted ty ebar avinfr a plurality of type, a lever ulcrumed bellow and at therear of the type-bar pivot and connected to said type-bar, a vertically-movable key-stem, a second lever and having one end pivoted to the key-stem, an

individual vremovable hanger for the secondl lever, a rod pivoted. to the other end of the second lever and pivoted directly tothe firstnamed lever, and a third lever vpivoted to said hanger and to the key-stem to hold said stem in an upright position. 31. In a front-strik type-writing machine, a) series of type-bars pivoted in a circular arc to strike upwardly and rearwardly at one and the same rinting-point, in combination with a series o levers also pivoted in a circular arc at the rear of the type-bar pivots, links connected to the levers and type-bars above their fulcrums, meansto actuate the levers and a universal bar disposed in a circular arc in a.

plane above and at the rear ofthe links, each ever having an extension above the link engaging and operating the universal bar when the lever is actuated.

32. In a front-strike type-writing machine, a type-bar action including a type-bar and a lever of thefirst order connected to the typebar, and a universal bar above and at the rear of the fulcrum of the lever and engaged and operated by the `upper end of said lever above this connection with'the type-bar.

33. In a front-strike type-writing machine, the combination with 'the type-,bar action, Vin'- cluding a series of levers pivot'ed in a circular arc and a universal bar disposed in an arc arc in which the levers are pivoted, said universal bar being engaged and actuated by the upper ends of said levers.

34. In a type-wu ting machine, the combi-- nation with a series of type-bars pivoted in a circular arc to strike upwardly and rearwardly at one and the same printing-point, of a series of upright levers each connected to one of the type-bars and extending above its connection with the type-bar, a universal'bar engaged and operated by the upward extensions of the levers and separate means for actuating the levers.

35. In a type-writing machine, a type-bar and actuating means therefor, inl combination. with a ribbon-vibrator and escapementpawl both pivoted on the same axis, a universal bar actuated by said ine-ans and connected to operatev the vibrator and escapement-pawl. f

36. In a type-writing machine, a pair of levers fulcrumed on the frame of the machine and extending toward each other from their fulcruins in different planes, one above the other, and a type -bar-supporting segment mounted on the free ends of and supported wholly by the free ends of said levers.

37. In a type-writing machine, two levers fulcrumed on the frame `of the machine and extending toward each other in different planes, one above the other, and a type-barsupporting segment pivotally mounted upon the free ends of said levers, the'levcr in the .lowest plane extending forwardly from its fulcrum and provided with a finger-key whereby it may be rocked to shift the segments vertically.

38. In a type-writing machine, a series of type-bars pivoted in a vertical arc, a series of upright levers pivoted in a similar arc and each connected 'to one of the type-bars, a system of keys for operating said levers, and a universal bar curved in a vertical arc substantially parallel with that in which the levers are pivoted but above the lever-pivots in the path of the upper ends of the levers.

In witness whereof we have hereunto set our hands this 14th dav of April, 1905.

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