US1548342A - Typewriting machine - Google Patents

Description

J. H. BARR TYPEWRITING MACHINE Filed March 15, 1922 2 Sheets-Shed 1 WVITNE 5 5 E 5 2y Elmwtoz Aug. 4, 1925. 1,548,342

Y J. H. BARR TYPEWRITING manna:

Filed March 15, 1922 I 2 Sheets-Sheet 2 WI TNE 5 SEE Snwmtoz Z7 71/ MM. 4

. 351 41 Gum/mm; t

Patented Aug. 4, 1925.

Uldtltiti STATS:

FFEE.

JOHN H. BAR-E, 0E NEXV YORK, N, 'Y., A'SSIGNOR TO REMINGTON 'IYPEWRITER COM- PANY, O'F ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed March 15, 1922. Serial No. 544,007.

To all whom it may concern:

Be it known that 1, JOHN H. BARR, citi- Zen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specilication.

My present invention relates to what is.

commonly called dead key mechanism tor typewriting machines, and its general object is to provide new and improved mechanism of the character specified. Dead key mechanism, as the term is generally understood, embodies means for writing accent marks or other indicia in association or register with letters already printed or subsequently to be printed, such marks being printed from type bars which do not actuate the escapement mechanism, there being an escapernent cutout of some form associated with the dead key type bar actions. It has heretofore been proposed in typewriting machines provided with slotted type bar segments, to vary the angle of the slots of the dead or accent key type bars in order to provide room in the basket for the type blocks of the dead key type bars, this question of room in the basket being one of the great difficulties encountered in devising practicable (lead key mechanism, due to the fact that the off-set type blocks would encroach on the space occupied by the regular type blocks. My present invention embodies means for providing off-set type or types in a slotted segment machine, while avoiding the necessity of cutting a special guide slot or slots in the segment for the type bars of such off-set types, the dead type bars being arranged in slots which are regular and conform with all the other slots of the segment converging at the same center. This is a matter of considerable importance, as all segments may therefore be slotted alike and any machine made according to my design can be converted into one provided with off-set type fordead key or other usage with very little trouble. Any escapement cut-out mechanism of suitable character may be used in connection with my present invention.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In carrying out my invention in the present instance, I have shown it applied A. Seib, Sr. No. 529,415, filed Jan. 16, 1922,

but it is of course to be understood that the principles of the invention may be embodied in other styles of typewriting machines and with other escapementcut-out mechanism.

Supposing it is desired to employ one or I0 more dead bars as they may be called provided with such characters as accent marks, then the main type bar pivot wire is shortened correspondingly at the right side of the segment, and a secondary pivot wire or stub is arranged at the right end or side of the segment, this stub wire being disposed somewhat nearer the printing point than is the main pivot wire. It may be above or below the plane of the main pivot wire.

but in the present instance it is shown lo cated in substantially the same horizontal plane. This stub pivot or fulcrum wire provides a pivot for the dead type bar or bars and is preferably slightly larger in diameter than the main pivot wire, so that if it be set, say, one-tenth of an inch closer to the printing point than the main wire, the contiguous ends of the two pivot wires will slightly overlap. If, as is preferred, these'on two ends be coned or pointed, end pressure will operate to crowd or press the pivots back firmly into their respective seats. The location of the dead bar pivot closer to the printing point requires or permits a shorter type bar than the regular type bars as measured to the bending point of the bar near the printing point. As a consequence of this shortening of the dead type bar or bars their types will lie, when in the basket, W

inside of the row of regular types. Consequently, if the type block on the dead bar is off-set to the left so that it may print in register with the last printed character said dead type block will have suflicient space in the basket, and will not contact or collide with the adjacent type block at its left. In order to provide a key dip for the dead key that will conform with the standard key dip of the other keys, the D driver or sub-lever of the type action is modified so that the changes from the standard construction involve both a special type bar and driver for each dead key type action. Also, a slight modification of the segment is required to provide a suitable locking seat or recess for the stub-wire or pivot, but this change or modification does not in any way interfere with the use of the segment for machines in which no dead or off-set type bars are employed.

My invention will be more particularly described in connection with the accompanying drawings, wherein,

Figure 1 is afragmentary top plan view of a Remington portable typewriting ma chine embodying my invention, parts being broken away and other parts omitted, only so much of the'machine being shown as is necessary to a full understanding of said invention.

Figure 2 is a fragmentary top plan view showing the dead key type bar in printing position.

Figure 3 is a vertical sectional view taken on a plane indicated by the section line 11 in Fig. 1 and looking in the direction of the arrow at said line.

Figure 4: is a fragmentary face view of the dead key type bar and adjacent bars as they lie in the basket.

Figure 5 is a fragmentary view on an em larged scale showing the right-hand end of the type bar segment, said view being taken on a vertical plane indicated by the section line 22 in Fig. 2 and looking in the direction of the arrow thereat.

Figure 6 is a perspective view of a novel dead bar pivot and its support; and

Figure 7 is a perspective view of a modiiication.

As appears from Fig. 1, the frame of the machine comprises side plates 7 1 between which is disposed a casting or segment member 2 composed of an inner segment 3, an

outer; segment 1 and side extensions or webs 5, the casting being rigid with the plates 1. A platen G is mounted on a traveling carriage (not shown) which co-operates through roller bearingswith trackways carried by a frame comprising a cross bar 7 and forwardly extending end bars 8 rigid with said cross bar, said frame being shiftably mounted on supports comprising a rock shaft 9 bearing in the frame plates 1 and provided with crank arms 10 pivotally con nected at 11 with the cross bar 7. frame comprising the bars 7, 8 is shiftable by a train of devices (not shown) connected to a shift key which is operative to move the frame rearward and carry the platen to its upper case position as illustrated by dotted lines in Fig. 2, the platen and its carriage in.

65 both shift positions being adapted to travel for letter spacing endwise on the shift-able The frame. The type bars 12 are arranged in radial slots indicated at 13 formed in the segment 3, each type bar carrying a type block 14; provided with two types, the set of type bars being pivotally mounted on a common pivot wire 15'which is arranged in a horizontal slot indicated at 16 formed in the segment 3. Said slot is open at its rear and its height from top'to bottom is slightly less than the diameter of the pivot wire 15, a suitable cutter being employed to traverse the slot from end to end and provide a slight enlargement or seat 16 for the pivot Wire. The ends of the wire 'may he tapered, rounded off or coned as shown at 15* and have usually co-operated with openings in plates secured to the casting 2. In the present construction only the left-hand tapered end 15 of the pivot wire is thus disposed, the righthand end portion of said wirebeing shortened or cut oil for the purposes of my in vention as hereinafter more fully explained. As shown, the left end 15 engages in a hole indicated at 1'? in the plate 18 which is secured by a screw 18 to the left end of the segmental portion of the casting 2. The

forward segmental. portion f of the casting.

3 is likewise provided with radial slots indi ated at 19 and concentric with the slots 13, said slots 10 receiving sub-levers 20 mounted on a pivot wire 21 that is seated in a slot in the segment at, said pivot wire being coned at its ends to co-operate with openings L2 in the plates 18 and being thus main tained tightly in its seat. The rear arms of the sub-levers 20 have a geared connection with their associate typebars and the forward arms of said sub-levers are operatively connected with key levers 23 as is usual in the Remington portable machine. Said key levers are depressible to actuate the type bars and cause their types to co-operate with the top or upper face of the platen when the machine is expanded and the type bars are elevated in position for use. Thety'pe bars are raised or elevated from their col lapsed or recumbent position by a hand-coir trolled lifting device comprising a rest or pad 2% seated in a trough 25 carried by a segment 26 to the top of which is secured-a plate 27 (Fig. 3). Each actuated type bar as it nears the platen co-operates close to its type end with a central type guide 28 (Fig. 2) which is secured to the casting 2 and e:\'- tends rearward and somewhat upward therefrom, the rear end portion of the guide being provided with a slot or opening indicated at 29 having a flaring mouth through which the type bars pass downward. Near their type ends the type bars are angled or bent more or less except the bars at or near the middle of the system so that when in printing position the type portion of each bar may extend in a straight line fore-andaft of the machine substantially bisecting lit) The slots 18 and 19, all of which it has not been deemed necessary to show in the drawing, constitute two complete sets or series, one for the type bars and one for the sublevers 20, radiating from a common center or point which lies in the fore-andaft line pp, this point being indicated in Fig. 2 at p and being somewhat forward of the printing line. The plane, it will be understood, bisects the guide opening 29 in the center guide. The two regular type bars 12 at the right-hand end of the segment are illustrated in Fig. 1, this view being a face view of the bars as they lie in the basket. It will be understood that these type bars are bent to the greatest extent while the middle type bar of the system is straight and the type bars between the middle type bar and the end bars are bent to progressively increasing extents until the extreme bends of the end bars are reached.

lVhen the bars are in printing position the bend of each is at the point p. The key levers 23 are adapted to actuate a universal bar frame comprising a universal bar proper 30, end bars 31 and a rear bar 32, the end bars connecting the two cross bars and 32 and providinga rigid frame which is mounted to rock on pivots 33' secured to the side plates 1. The universal bar proper 30 is provided with a series of adjustable tongues 3 1, some only of which are shown, one for each key lever, the tongues underlying the key levers which are adapted to contact with them to depress the universal bar and rock the frame 30 and 32 on its pivots at each key depression. Secured to the cross bar 32 at about its middle by screws 35 is a frame member 36 provided with two rearward extensions 37 and 38, the extension 37 having at its rear end a lateral pin 39 which underlies a lip 40 bent horizontally from an arm 41 which extends forward from a plate 4-2 comprised in a dog rocker or frame. Said dog rocker further includes a second plate 43 spaced from the plate 42 and rigid therewith, the plate 13 being provided with parallel ears 1% pivoted on screw pivots 45 secured adjustably in ears 46 comprised in a bracket l7 secured by screws 18 to the under side of the cross bar 7. Arranged between the plates 12 and 13 of the rocker are'escapement dogs 49 and 50 which are adapted to co-operate with a toothed rack bar 51 mounted on the platen carriage. It will be understood that when one of the printing key levers 23 is actuated to throw its connected type bar to the printing point, said hey lever will depress the universal bar 30, rocking the frame 80-32 and swinging up the arm 37, causing the pin 39 to act against the lip 40 to rock the dog rocker 12, 13 and cause the escapement dogs a9 and 50 to co operate with the rack 51 so that on the return movement of the parts a letter space feeding movement of the carriage under the pull of its motor or spring drum mechanism is effected.

Concurrently with the actuation of the dog rocker by the arm 37 the arm 38 acts on the ribbon vibrating mechanism, said arm being adapted to press upward against an angularwire rod 52 which is adj ustably supported in parallel slotted arms 53 and 54 comprised in a sheet metal frame which further includes a cross bar 55 connecting the arms 53 and 5%. Said frame is adapted to rock on a pivot pin 56 secured to parallel ears 57 comprised in a'bracket 58 tired to the under side of the bar 7 The arm 53 of the rocking frame has an upright extension 53 which is connected by a link 53 with a ribbon vibrator 59 slidably supported on the center guide 28. The construction is such that when the universal bar frame is rocked on the depression of one of the key levers, the arm 38 will be swung upward against the under side of the rod 52 causing the frame 53--55 to swing on its pivot 56, lifting the arm 53 and sliding the vibrator rearward to inte-rpose the printing portion of the ribbon in the path of the actuated downwardly striking type.

While my invention is adapted to the employment of any desired number of dead key type bars I have limited the showing in the present instance to a single one of such type bars, as this fully illustrates the principles on which the invention is based. The main type bar pivot wire 15 is shortened so that its coned end 15 stops short of the right-hand slot 13 in the segment 3. To take the place of the usual pivot wire 15 in the right-hand slot there is employed a short or stub pivot wire 60 of slightly larger diameter than the pivot wire 15, the stub-wire having its inner end pointed as indicated at 60 The stub-wire is disposed about onetenth of an inch closer to the printing point than is the main wire, lying outside of or out of line with the arc containing the 'arcuate wire 15, and for this purpose the right-hand end portion of the segment 3 is bored or cut out with a suitable tool that is passed through the slot 16 so as to provide a seat 16 of slightly larger diameter than the seat 16. The stub wire 60 is-seated in the enlargement 16 and the construction is such that its coned end 60 partly abuts against and cooperates with the inner or righthand coned end 15 of the main wire 15 so as to exert a lateral pressure on the two wires forcing the main wire forward in its seat and the stub-wire rearward in its seat. The stub-wire may be secured in any suitable way on the segment. In the present ill) instance there. may be provided, .as best shown in Fig. 6, a special end plate 61 to' the forward end of which the stub-wire is suitably secured, said wire projecting laterally inward from the inner face of the plate 61. This plate is secured to the righthand end or face of the segmentalportion of the casting 2 as by a screw 62, and is formed near its forward end with an opening indicated at 63 which co-operates with the righthand coned end of the pivot wire 21. It will be apparent that the right-hand plate 61' generally resembles the left-hand plate 18, that it is similarly secured to the casting 2, and that it co-opcrates with the right end of the wire 21 as does the plate 18 with the left end thereof. The difference between the two plates is that the right-hand one, of course, has secured to it the stub pivot 60, this stub pivot co-operating with the right-hand end of the wire 15 to the same effect as does the opening 17 with the left-hand end thereof. The setting forward of the stub-pivot 60 results in a corresponding shortening of the type bar that is pivoted on said pivot and is seated in the righthand guide slot 13. Said type bar-64 carries a type block 65 which is provided with accent marks or other desired marks, and the lower end or heel of this type bar is formed with a special set ofgear teeth 66. It will be understood, especially from. a consideration of Fig. 4;,that the shortening of the accent bar 64 brings its type end inside of or rearward of the line of types of the other bars as they lie in the basket, and this fact enables the type-end portion of the bar (34 to be provided'with a bend or off-set 67, such that when the bar is brought to the printing position (Fig. 2) the type on the block 65 will strike one space to the left of the printing point and will print in registerwith the type impression last previously made. It will be understood that by reason of bringing the pivot of'the special or dead key type bar closer to the printing point I am enabled to guide it in a slot which radiates from the same center as do allthe other guide slots 13, and that the type block on said dead baris off-set a'full letter space to the left and yet does not interfere or clash with the adjacent type block or blocks.

It will be observed that a sub-lever 68 having a somewhat longer rear arm than the other upper sub-levers must be provided,

this sub-lever carrying a suitable integral gear segment 69 which meshes with'the gear teeth 66 of the type bar. Said sub-lever is pivoted on the pivot wire 15 being guided in the right-hand one of the set of guide slots 19. r The forward arm of the sub-lever 68 is connected in the usual way by devices comprising a link 70, and a second sub-lever 71 With the right-hand one of the set of key levers 23, the construction being such that the extent of key depression of this righthand key lever sufiicient to cause the type bar 64- to print is substantially equal to that of the key depressions of the other type bars.

As is well understood the actuation of dead key type bars of the style here employed should take place without affecting the escapernent, and to this end a suitable escapementcutout. is employed, such for example as that disclosed in the aforesaid application of George A.Seib, wherein provision is made for cutting out or suppressing the escapement mechanism without however interfering with the operation of the ribbon vibrator necessary to interposc the ribbon in the path of the dead key type in order that the latter may make a proper imprint. To these ends the tongue 34- underlying the right-hand or dead key lever 23 is cut away oreliminated so that when said key lever is depressed it will not actuate theuniversal bar and the escapement devices. This results in also rendering ineffective the arm 38 on the universal bar frame, and therefore it becomes necessary to provide other means for actuating the rod Said means in thepresent instance includes an an ular wire comprising a cross portion 72, a forwardly extending righthand arm 73 terminating in a laterally bent end portion 7a underlying the key lever 23, and a rearwardly extending left-hand arm. 75 undcrlyingthe rod' 52 close to the arm 38. The wire member 7 2-7 5 is mounted on the universal bar frame, the cross portion 72 on said wire bearing in cars 76 bent downward in parallelism from a bracket 77 suitably fixed to the cross bar 32. It will be understood that when the dead key lever 23 is depressed, it will contact with and depress theextension 74, swinging the arm 7 3 downward and lifting the arm 75, which,

taking the place of the ineffective arm 38,

will move the rod 52 upward, swing the frame on its pivot and cause the extension 53 to actuatethe ribbon vibrator.

A modified Support for the stub-wi1:'e is illustrated in F 7, the plate 61 being replaced by a shorter and smaller plate 78 to one end of which is fixed a stub-wire 79 similar to the stub-wire 60. The forward end of the plate 78 is-formed with an opening 80 which is adapted to receive a screw or other securing means whereby thewire 79 and its supporting plate may be maintained in fixed relationship with the segment.

Various changes besides those described may be made without departing from my invention.

hat I claim as new and desire to se cure by Letters Patent, is

1. In a typewriting machine, the combination of a platen, a support provided with a series of radial slots all having a common center, key actuated type bars arranged in said slots, a common type bar pivot wire, a separate pivot Wire for certain only of said type bars, the inner ends of said pivot wires being adapted to abut against each other, and means for forcing the separate wires laterally against their seats.

2. In a typewriting machine, the combination of a platen, a slotted support, key actuated type bars arranged in the slots of said support, a common type bar pivot wire, a separate pivot wire for certain only of said type bars, the inner ends of said pivot wires being adapted to abut against each other, and means for forcing said pivot wires oppositely against their seats.

3. In a typewriting machine, the cornbination of a platen, a support provided with a series of slots, key actuated type bars arranged in said slots, a common type bar pivot wire, and a separate pivot wire for certain only of said type bars, the in ner ends of said pivot wires being adapted to abut against each other, said ends having tapered contact portions.

4. In a typewriting machine, the combination of a platen, a support provided with a series of radial slots, key actuated type bars arranged in said slots, a common arcuate type bar pivot, and a separate pivot for certain only of said type bars lying outside said arcuate pivot. said certain of said type bars being offset to print at one side of the normal printing point.

In a typewriting machine, the combination of a platen, a support provided with a series of radial slots all having a common center, key actuated type bars. arranged in said slots, a common arcuate type bar pivot wire, and a separate pivot wire for one of the type bars at the ei}d of the set arranged outside the arc of said common pivot, the type end of said end bar being offset laterally so as to print at one side of the normal printing point.

6. In a typewriting machine, the combination of a platen, a support provided with a series of radial slots, key actuated type bars arranged in said slots, a common arcuate type bar pivot, and a separate pivot for one of the type bars at the end of the set, said end type bar being shortened and provided with an offset type block, the type block in printing position being at one side of the regular printing point and when lying in the basket being inside the row of type blocks. Q

7. In a typewriting machine, the combination out a platen, a support provided with a series of radial slots, all having a common center, key actuated type bars arranged in said slots, the pivot of one of said type bars being arranged out of line with the pivots of the other type bars, said one of said type bars being shortened and also being provided with an offset type block, said type block in printing position being at one side of the regular printing point, while when in the basket said type block is inside the row of the other type blocks.

8. In a typewriting machine, the combination of a platen, escapement mechanism, ribbon vibrating mechanism, a support provided with a series of radial slots, type bars arranged in said slots, key levers, connections between said key levers and said type bars, the pivot of one of said type bars being arranged out of line with the pivots of the other type bars, said one of said type bars being shortened and also being provided with an offset type block, said type block in printing position being at one side of the regular printing point, While in the basket said type block is inside the row of the other type blocks, the esca-pement mechanism being inoperative when the key lever oi the shortened type bar is actuated, the ribbon vibrator mechanism however operating at such time.

9. In a typewriting machine, the combi nation of a platen, a segment provided with a series of slots, key actuated type bars arranged in said slots, a type bar pivot wire common to most of the type bars, a separate pivot wire for certain only of said type bars, and a detachable support to which said separate pivot wire is fixed, said support being fixed to one of the outer faces o't said segment, and said separate pivot wire projecting laterally at a substantial right angle from the tace of said support.

10. In a typewriting machine, the combination of a platen, a support provided with a series of slots, key actuated type bars in said slots, a main pivot wire, a stub wire or pin for one of said type bars, a plate from the side o1 which said pin projects, and means for detachably securing said plate to said slotted support.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York this l lth day of March, A. D. 1922.

JOHN H. BAR-R.

\Vitnesses E. M. WnLLs, CHARLES E. SMITH.

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