US973083A - Type-writing machine. - Google Patents

Description

G. H. SMITH. TYPE WRITING MACHINE. APPLIOATION 1-11.31) ,MAY 22, 1909.

Patented Oct.18,1-9 10.

4 sums-511E111 1.

In If) \L WITNE55E5= INVENTEIR:

mwav

G. H. SMITH. TYPE WRITING MACHINE. APPLIOATION- FILED MAY 22,1909.

Patented Oct-18,1910.

4 SKBBTS-SHBET 2.

INVENTUR *7 WITNEEEE5= Wf// HIEATTURNEY G. H. SMITH. 1 TYPE WBITI momma i APPLIOATION III JBD KAY 22, 1909. 973,083.

Patented Oct. 18, 1910.

4 anus-sum a.

WITNESEIEEI:

HISATTURNEY G. E. SMITH. TYPE WRITING MACHINE.

APPLICATION FILED MAY 22, 1909. I 973,083. Patented Oct. 18,1910.

4 SHEETSSHEET 4.

- 42W "7 Jami 1415 ATTORNEY {strike type action in "ceived case shifting of the case shift frame.

' to the frame of the machine.

UNITED sAEs A GEORGE H. SMITH, OF NUTLEY, NEW JERSEY, ASSIGNOR TO UNION TYPEWRITER COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Oct. 18, 1910.

To all whomikmay concern:

Be it known that I, GEORGE H. SMITH, citizen of the United States, and resident of N utley, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to type actions and to means whereby the series of type bars may receive case shifting movements.

The main objects of my invention are to provide an eflicient and a comparatively simple mechanism of the character specified and at the same time to provide a type action which has an easy touch and substantially uniform leverage throughout the system.

To the above and other ends which will hereinafter appear, my-invention consists in the features of construction, arrangements of parts and combinations of devices to be set forth in the following specification and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a vertical central fore and aft sectional view of one form of typewriting machine embodying my invention, sufiicient only of the typewriting machine being shown to illustrate my invention in its embodiment therein. Fig. 2 is a vertical transverse sectional view of the same, with parts broken away. Fig. 3 is a fragmentary sectional view corresponding to Fig. 1 but showing the type basket shifted for upper case writing; some of the parts shown in Fig. 1 being omitted. Fig. 4 is a detail perspective view Fig. 5 is a diagrammatic side elevation showing portions of-two type actions, the segment and shift links on which the latter is mounted. Fig. 6 is a detail fragmentary sectional View showing the means at one end of the machine for pivotally connecting the segment shift-frame Fig. 7 is a detail transverse sectional view through one of the pivot joints between the segmentand the shift-frame.

Heretofore' great difliculty has been encountered in providing an eflicient frontmovements and the type bars were actuated by a forward pull from devices situated forward of the type bar segment. In my application Serial No. 47 9,859

end as at 9 to hangers 22 secured to a which type bars restruction provides a simpler and more efii- I cient mechanism.

The frame of the machine comprises a base 1, corner posts 2 and a top plate 3. The platen 4, diagrammatically shown in Figs. 1 and 3, is mounted in a suitable carriage to move from side to side of the machine over the top plate, the carriage receiving a stepby-step letter-space movement at each actuation of a printing key or space key. Key levers 5 are fulcrumed on a fulcrum plate 6 secured to and depending from the base 1 of the machine. Each key lever is pivotally connected at 7 to an upwardly extending link 8 which in turn is pivoted at its upper a substantially horizontally disposed sub-lever 10 or 10 of the first order which extends longitudinally fore and aft of the machine. The sub-levers are pivoted at 11 to a hanger 12 secured by screws 13 to a segment 14 fixed by screws 15 to a cross bar 16 preferably forming part of the base 1 of the machine. The hangers l2 and sub-levers 10 and 10 are arranged in two concentric series and in staggered relation as shown in the drawings. The hangers 12 are all vertically disposed and each series of sub-levers is arranged in an are that is substantially coextensive with the arc in which the type bars are mounted as will hereinafter more clearly appear.

Extending rearwardly longitudinally fore and aft of the machine and from the sublevers 10 is a series of parallel or substantially parallel pull links 17 pivoted at 18 to the sub-levers 10 and pivotally connected at their rear ends as at 19, to type bars 20, which latter are pivoted at 21 to type bar substantially vertical shiftable type bar segment 23. The hangers 22 are secured to the segment by screws 24 and are radially disposed as indicated in Fig. 2. The type bars extend forwardly and are supported at their free ends on a type pad 25 seated in a segmental supporting member 26 secured at the forward ends of arms or rods 27 which at their rear ends are secured by nuts 28'to the type bar segment. The sub-levers .10 are likewise connected to parallel pull links 17 which extend upwardly and rearwardly from the sub-levers to which they are pivoted at 29, the rear ends of the links 17 a being pivotally connected at 30 to type bars 20 pivoted at 21 to type bar hangers 22. It wlll be seen that the type bars 20 and :20 are arranged in two sets on two sets of concentrically arranged staggered hangers 22 and 22 and that the pivots 21 and 21 of the type bars have the 45 arrangement indicated by the dotted line a in order that the free ends of the type bars may all project .to and terminate at substantially the same transverse vertical plane, although the type bars of the two series are of different lengths. The type bar actuating links and sub-levers are arranged in two concentric series beneath the system of type bars.

Each type bar has a type block 31 provided with a conical stem 32 received in a corresponding opening in the type bar. The lower-case type 33 is situated directly above the type bar and above the stem 32, by which the type block is'connected to the bar, so that the lower case type is above and in the plane of movement of the bar. Each upper case type 34 is off-set forwardly from its companion lower case type. By this arrangement the most often used, lower case types on each bar are directly above and in the plane of movement of the bar so that there is no cranking whatever on these most frequently used tvpes, whereas the upper case types 34, which are not so frequently used, are off-set and such cranking as there may be will occur on the least frequently used types. It will be understood that the type bars are all segmentally arranged and strike upwardly and rearwardly against the front face of the platen.

The construction thus far described is not materially different from that employed in the No. 10 Remington machine.

.T he type bar segment 23 is pivotally connected at 35 to the rear ends of substantially horizontally disposed shift links 36, the forward ends of said links being pivoted at 37 to depending bracket arms 38 secured to the top plate of the machine. The links 36 are connected to the upper portion of the segment at opposite sides thereof and while these links are curved as indicated in Fig. 1 they constitute in effect slightly inclined parallel links as will be understood by reference to the dotted line b in Fig. 1 which passes through the pivotal points of connection of said links. It will likewise be seen that'these links are parallel with the type bar actuating links 17 and 17 as will be understood from a comparison of the lines I), c and (Z in Fig. 1 and from an inspection of the diagrammatic View shown in Fig. 5.

Parallel arms or shift links 39 (Figs. 1 and 4) are pivoted at their forward ends on pivot screws 40 threaded through tapped openings in upright brackets or supports 41 (Fig. 6) formed integral with the cross bar 16 and with the base 1 of the machine. Each of the pivot screws is secured in.its adjusted position by a lock nut 42 and passes freely through a bearing opening 43 (Fig. 4) in the companion arm or link. A cross bar 44 unites the links or arms 39 so as to form with the arms a rigid shift frame pivoted at 40 to the frame of the machine. The rear ends of the arms 39 are provided with outwardly extending pivot pins or screws 45 which pass freely through openings in the arms 39 and are received at their threaded ends in tapped openings in depending arms 46 (Fig. 7) of the type bar segment, the pins being secured against accidental dis lacement by lock nuts 47. The pins 45 pro ect outwardly beyond the arms 39 and into recesses 48 formed in the upwardly extending arms or brackets 41. Set screws 49 and 50 extend at their free ends in opposite directions toward the pivot ins 45, two of the set screws or screw stops 49 and 50 being associated with each pivot pin 45. The screw stops are threaded through tapped openings in arms 51 formed on the brackets 41 and lock nuts 52 and 53 are employed to secure the screw stops against accidental displacement.

From the foregoing description it will be understood that the pivot pins 45 not only constitute means for pivotally connecting the arm 39 to the type bar segment but likewise constitute stops which coiiperate with the screw stops 49 and 50 to limit the shifting movements of the segment.

Each of the arms 39 is provided with a depending rigidly connected arm 54, to which one end of a contractile spring 55 is secured, its opposite end being connected to a depending pin 56 which rojects downwardly from the base 1 o the machine. The power of the springs 55 is thus exerted to normally maintain the type bar segment in the elevated position as shown in Fig. 1. From this figure it will be seen that the elevated position of the segment is the normal position in which the lower case types 33 strike the platen, whereas, when the segmentis moved downwardly, to the position shown in Fig. 3, the type bars are shifted to a position where the upper case types 34 will strike the platen. Shift key levers 57 are pivoted on the fulcrum bar 6 and are connected to upwardly extending links 58. The upper ends of these links are received in openings 59 in the arms 39 so that a depression on either of the shift keys 60, which are situated at opposite sides of the machine, is effective to move the segment downwardly to change from the lower to the upper case position.

From an inspection of Figsfl and 5 it will be seen that the shift links 39 are parallel with each other and are parallel with the shift links 36 and the type bar actuating links 17 and 17. This will be made as indicated by the dotted line. f. It will apparent by a comparison of the lines I), c, d and c in Fig. 1. It will likewise be understood from an inspection of Figs. 1 and 5 and from the dotted lines f and g in F ig. 5 that the shift links 36 and 39'and the type bar actuating links 17 and 17*" not alone are parallel and always remain parallel, but that they are all of substantially the same length and the shift links 36 and 39 are pivoted at their forward ends to the frame of the machine forward of the type bar segment in substantially the same vertical transverse plane that the "pivotal points of connection between the type bar actuating links 17 and their sub-levers are situated in,

also be seen that the rear ends of the shift links 36 and 39 are pivoted in substantially the same vertical transverse plane that the pivotal points of connection between the type bar actuating links and the type bars are situated in, as indicated by the dotted line 9 in Fig. 5. By reason of this construction and arrangement of the parts a comparatively simple and efficient means is provided for effecting a downward movement of the segment in orderto shift the type basket from the lower to the upper case position without changing the effective relation between the different parts and the type bar actuating means. Thus it will be understood that when a shift key 60 is depressed the type bar segment is moved'downwardly from the position shown in Fig. 1 to that indicated in Fig. 3 and that the effective relation of the type bar actuating means ill both of these positions is the same. This change of the position of the type bar segment, the shift links 36 and 39 and the links 17 and 17 is indicated in the diagrammatic view shown in Fig. 5. From this view it will be seen that during the shift of the case links 36 and 39 from the full to the dotted line positions the type bar actuating links .move with the segment around the forward pivotal ends 18 and 29 which connect them with the sub-levers l0 and 10, whereas the sub-levers themselves, the links 8 and the key levers remain at rest. It will also be seen that during the case shifting movements of the parts the pivotal points 35, 19, 30 and 41 describe co-extensive or substantially co-extensive arcs h, i, j and 7.: respectively. There is no lost motion between the parts of the type bar actuating mechanism in either the upper or lower case position of the type bar segment and there is no movement of the type actuating members carried by the frame of the machine, iwtwithstanding the fact that all of the parts of the type actions are positively connected. Moreover, it will be seen that the type actions are such as to provide an accelerated motion of each type bar in its approach to the printing position as may be readily understood from a comparison of the four different positions ofthe key indicated at Z, m, n and 0 in Fig. 1 with the positions of the type bars at p, Q, '1' and s which show the respective amounts of movement given the-bar at periods in the depression of the key shown. It will be understood therefore that asoft, easy touch 1s provided at the initial portion of the stroke, giving a gradual acceleration to the type bar as it approaches the printing position. Moreover, it will be understood that a uniform or substantially uniform leverage is provided throughout the system, and thatthere is a direct fore and aft pull exerted on the type bars and that all side strain is avoided in the side actions.

From certain aspects of my invention it is immaterial whether or not the type bar re ceives a case shifting movement or whether vor not the character of the type action is such as to afford such a case shift of the type bar, although the main object of my invention is to provide an eflicient type action in which the type basket receives a type shifting movement.

Various changes may be made without departing from the spirit and scope of my invention.

Vhat I claim as new and desire to secure by Letters Patent, is

1 In a front-strike typewriting machine, the combination of a. platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a type bar segment on which said type bars are mounted,

actuating links connected to said type bars and extending upwardly and rearwardly and having a longitudinal disposition fore and aft of the machine, sub-levers of the first order which extend longitudinally fore and aft of the machine and which are carried by a fixed portion of the machine and are pivotally connected to said links, key levers,

links which extend upwardly from said key levers to the sub-levers, and case shifting means for effecting a substantially vertical case shifting movement of the segment.

2. In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rearwardly strikingtype bars, a type bar segment on which said type bars are mounted, substantially parallel actuating links connected to said type bars and extending longitudinally fore and aft of the machine, key actuated sub-levers of the first order which extend longitudinally fore and aft of the machine and which are carried by a fixed portion of the machine and are pivotally connected to said substantially parallel links, and ease shifting means for effecting a substantially vertical ease shifting movement of the segment, said'case shifting means comprising parallel shift links which are also parallel with said-actuating links and remain parallel therewith during the case ment on which said type bars are mounted,

substantially parallel actuating links connected to said type bars and extending longitudinally fore and aft of the machine, key actuated sub-levers which extend longitudinally fore and aft of the machine and which are carried by a fixed portion of the machine and are pivotally connected to said substantially, parallel links, and case shifting means for effecting a substantially vertical case shifting movement of the segment, said case shifting means comprising parallel shift links which are also parallel with said actuating links and are mounted to turn on pivots forward of the type bar segi'nent, the rear ends of the actuating links moving with the segment in its case shifting movements and the links turning during such movements on the pivots which connect them with said sub-levers.

4. In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a type bar segment on which said type bars are mounted, actuating links connected to said type bars and extending longitudinally fore and aft of the machine, key actuated sub-levers which extend longitudinally fore and aft of the machine and which are carried by a fixed portion of the machine and are pivotally attached directly to said links, and case shift links on which said segment is mounted for substantially vertical case shifting movements, said case shift links being of substantially the same length as the said actuating links.

5. In a front-strike typewriting machine,

- the combination of a platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a type bar segment on which said type bars are mounted, actuating links connected to said type bars and extending upwardly and rearwardly and having a longitudinal disposition fore and aft of the machine, sub-levers of the first order which extend longitudinally fore and aft of the machine and which are carried by a fixed portion of the machine and are pivotally connected to said links, key levers, links which extend upwardly from said key levers to the sub-levers, and parallel case shift links on which said segment is mounted for substantially vertical case shifting movements, said case shift links being of substantially the same length as the said actuating links, the rear ends of the actuating links moving with the segment in its case shifting movements and the links turning during such movements on the pivots which connect them with saidsub-levers a 6. In a front-strike typewriting machine,

the combination of a platen, a series of se mentally arranged upwardly and rearwar y striking type bars, a'segment on which said type bars are mounted, a set of actuating links extending to said type bars and extending fore and aft of the machine beneath the type bars, a set of sub-levers pivoted to a fixed art of the machine and plvotally connected to said, links, said sub-levers likewise extending fore and aft of the machine beneath the type bars,key levers, links which extend from said key levers to said sub-levers, and case shifting means for effecting a case shifting movement of said segment.

7. In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a set of substantially parallel actuating links connected to said type bars and extending fore and aft of the machine beneath the type bars, a set of sublevers pivoted to a fixed part of the machine and pivotally connected to said links, said sub-levers likewise extending fore and aft of the machine beneath the type bars, key

levers, links which extend from said key levers to said sub-levers, and case shifting means for effecting a case shifting movement of said segment, the rear ends of the actuating links moving with the segment in its case shitting movements and the links turning during such movements on the pivots which connect them with said sub-levers.

8. In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a set'of actuating links connected to said type bars and extenda ing fore and aft of the machine beneath the type bars, a set of sub-levers pivoted to a fixed part of the machine and pivotally connected to said links, said sub-levers likewise extending fore and aft of the machine beneath the type bars, key levers, links which extend from said key levers to said sub-levers, and case shifting means for effecting a case shifting movement of said segment around a pivotal center which is forward of said segment.

t). In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a set of substantially parallel actuating links connect ed to said type bars and extending fore and aft. of the machine beneath the type bars. a set of sub-levers pivoted \to a fixed part of the machine and pivotally connected to said links, said sub-levers likewise extendtype bars, key levers,

'stantially ing fore and aft of the machine beneath the links which extend from said'key levers to said sub-levers, and case shifting means for effecting a case shiftin movement of said segment, the rear ends 0 the actuating links moving with the segment in its case shifting movements and the links turning during such movements on the pivots which connect them with said sub-levers, said case shifting means comprising parallel shift links on which the se ment is shifted, said shift links corresponding in length to the actuating links.

10. In .a front strike typewriting machine, the combination of a platen, a. series of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a set of substantially parallel actuating links connected to said type bars and extending fore and aft of the machine beneath the type bars, a set of sub-levers pivoted to a fixed part of the machine and pivotally connected to said links, said sub-levers likewise extending fore and aft of the machine beneath the type bars, key levers, links which extend from said key levers to said sub-levers, and

case shifting means for effecting a case shifting movement of said segment, the rear ends of the actuating links moving with the segment in its case shifting movements and the links turning during such movements on the pivots which connect them with said sub-levers, said case shifting means comprising parallel shift links on which the segment is shifted, said shift links being subparallel with and corresponding in length to the actuating links.

11. In a front-strike typewriting machine, the combination of a platen, a series of segmentally arranged upwardly and rear wardly striking type bars, a segment on which said type bars are mounted, a set of substantially parallel actuating links connected to said type bars and extending fore and aft of the machine beneath the type bars, a set of sub-levers pivoted to a fixed part of the machine and pivotally connected to said links, said sub-levers likewise extending fore and aft of the machine beneath the type bars, key levers, links which extend from said key levers to said sub-levers, and case shifting means for effecting a case shifting movement of said segment, the rear ends of the actuating links moving with the segment in its case shifting movements and the links turning during such movements on the pivots which connect them with said sub-levers, said case shifting means comprising parallel shift links on which the segment is shifted, said shift links being substantially parallel with and corresponding in length to the actuating links and mounted to turn around pivots which are forward of the type bar segment.

12. in a front-strike typewriting machine,

the combination of a series ofsegmentally arranged upwardly and rearwardly striking type bars,'a segment on which said type bars are mounted, a series of key actuated levers, a series of actuating links that extend fore and aft of the machine and are pivoted to and connect said type bars and levers, and case sift links which extend fore and aft of the machine and on which said segment is mounted and adapted ing movements, the rear pivots of said case shift links being substantially in the same transverse vertical plane as the ivotal connections between the actuating llnks and the type bars and the forward pivots of the shift links being in substantially the same vertical transverse plane as the pivotal connections between the key actuated levers and actuating links.

13. In a front-strike typewriting machine, the combination of arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a series of key actuated levers, a series of parallel actuating links that extend fore and aft of the machine and are pivoted to and connect said type bars and levers, and parallel case shift links which extend fore and aft of the machine and on which said segment is mounted and adapted to receive said shifting movements, the shift links being parallel with the actuating links and the rear pivots of said case shift links being substantially in the same transverse vertical plane as the pivotal connections between the actuating links and the type bars and the forward pivots of the shift links being in substantially the same vertical transverse plane as the pivotal connections between the key actuated levers and actuating links.

14. In a front-strike typewriting machine, the combination of a serles of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a series of key actuated levers, a series of actuating links that extend fore and aft of the machine and are pivoted to and connect said type bars and levers, and case shift links which extend fore and aft of the machine and on which said segment is mounted and adapted to receive case shifting movements, the rear ends of said case shift links being pivoted'to the segment, which pivots are substantially in the same transverse vertical plane as the pivotal connections between the actuating links and the type bars and the forward ends of the shift links being mounted on fixed pivots, which fixed pivots are in substantially the same vertical transverse plane as the pivotal connections between and actuating links.

15. In a front-strike typewriting machine,

to receive case shifta series of segmentally the key actuated levers t which pivots the combination of a series 'of segmentally arranged upwardly and rearwardly striking type bars, a segment on which said type bars are mounted, a series of key actuated levers, a series of arallel actuating links that extend fore and aft of the nachme and are pivoted to and connect said type bars and levers, and parallel case shift links which extend fore and aft of the machine and on which said segment is mounted and adapted to receive case shifting movements, the shift links being parallel with the actuating links and the rear ends of said case l shift links being pivoted to the segment, are substantially in the same transverse vertical plane as the pivotal connections between the actuating links and the type bars and the forward ends of the shift links being mounted on fixed pivots, which fixed pivots are in substantially the same vertical transverse plane as the pivotal connections between the key actuating levers and actuating links.

16. In a front-strike typewriting machine, the combination of a series of key actuated devices including a series of substantially parallel actuating links, a series of type bars connected to said links and each having a lower case type situated directly over the bar and an upper case type off-set from the bar forwardly of the lower case type, a shiftable segment normally maintained in the elevated position, and case shifting meansv for moving the segment downward to provide for upper case writing, said case shifting means including case shifting links on which the segment is mounted and which are substantially parallel with said actuating links. a

17. In a front-strike typewriting machine, the combination of a series of key actuated levers, a series of substantially parallel actuating links connected with said levers, a series of type bars to which the links are connected, each of said type bars having a lower case type situated directly over the bar and an upper case type ofi-set from the bar forwardly of' the lower case type, a

1 sliiftable segment normally maintained in the elevated position, and case shifting means for moving the segment downward to provide for upper case writing, said case shift ing means comprising substantially parallel shift links on which the segment is mounted and which are substantially parallel with 1 said actuating links and are pivoted at their forward ends to a fixed portion of the mal chine. 18. In a front-strike typewriting machine, the combination of a serles of key actuated levers, a series of substantially parallel actuating links connected with said levers, a series of type bars to which the links are connected, each of said type bars having a l lower case type situated directly over the l bar and an upper case type off-set from the bar forwardly of the lower case type, a shiftable segment normally maintained in the elevated position, and case shifting means for moving the segment downward to provide for upper case writing, said case l shifting means comprising substantially l parallel shift links on which the segment is l mounted and which are substantially parallel with said actuating links and are pivoted at their forward ends to a fixed portion of the machine, the shift links being substantially horizontally disposed and being pivotedat their forward ends in substantially the same vertical transverse plane that the points of pivotal connection between the actuating links and the key actuated levers are situated in and pivoted at their rear ends in substantially the same vertical transverse plane as the points of pivotal connection between the shift link and the segment.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York this 19th day of May, A. D. 1909.

GEORGE H. SMITH.

CHARLES E. SMITH,

\ Witnesses:

J. B. Dnnvns.

Images