US1332375A - Typewriting-machine - Google Patents

Description

1.' H. BARR.

. TYPEWRITING MACHINE. APPLICATION FILED SEPT. H, I9i7.

Patented Mr. 2, 1920.

3 SHEETS-SHEET l.

WITNESSEE J'. H. BARR.

TYPEWRITING MACHINE. APPLICATIONFILEDISEELH.19u.

Wrrmfi 15:55

HIS ATTURNEY Pateted Mar. 2, 192C.

WITNEEEEE.

J. H. BARR.

TYPEWRITINGVMACHINE.

APPLrcATioN FILED SEPT. 11. |917.

1,332,375. Patented Mar. 2, 1920.

3 SHEETS-SHEET 3.

INVENTDR y @im HIEATTURNE.

v Original applicationled OFFICE.

JOHN H. BARR, 0F NEW YORK, N. Y., ASSIGNOR TO REMINGTON TYPEVVRITER COMPANY,

OI? ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWRITING-MACHINE.

Patented Mar. 2, 1920.

March 31, 1917, Serial No. 158,912@ E Divided and this application filed September 11, 1917. Serial No. 190,696.

T0 all whom, t may concern.'

Be it lniown that I, JOHN H. BARR, citizen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New York and State -o't New York, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification.

My present invention relates to case shifting devices for typewriting machines. Its principal object is to provide new and improved devices of the character specified.

To the above and other ends which will lhereinafter appear, my invention consists in the features of construction, combinations of devices, and arrangements of parts here inafter described and particularly pointed out in the claimsu v This application is a division ot my prior application Serial No. 158,913, tiled March 31,1917, now Patent No. 1,311,675, dated Jul 29,1919.

T e preferred form of the invention is illustrated in the accompanying drawings, wherein- Figure 1 is a front to rear vertical sectional view of a typewriting machine embodying my invention, parts ot the machine being omitted.

Fig. 2 is a transverse vertical sectional view, taken on planes indicated by the broken dotted line a: in Fig. 1 and looking rearwardly. Fig. 3 is a perspective view of my inventlon.

The main frame of the machine comprises side plates 1 and a rear plate 2 provided with ears 3,.the side plates and rear plate being secured in fixed relationship by screws 4:. A supplemental U-shaped plate 5 for protecting the keyboard is secured to the side plates 1 by screws 6. The side plates are cut out as indicated at 1u. The top plates that surmount the side plates are omitted from the drawing. A platen 7, diagrammatically illustrated,v is mounted on4 a carriage foi-'movement back and forth across the top plate under the control of carriage. feeding devices which are 'not herein disclosed but may be ot any desired construction.

Type bars 8, each provided at the outer end of its shank with a type block 9 having .two types, are disposed in an arc below the platen and are adapted to cooperate with the iront face thereof. The type bars are arranged in guide slots indicated at 10 in a vertically disposed type bar support or segment 11. The type bars are pivoted on a common pivot wire 12 suitably secured to the segment 11 and near their free ends are normally supported on a rest or pad 13 sup ported on a segmental member 14: that is se-y cured at its end portions to rods or bars 15 extending forward from the segment near its ends.

The type bar support or element comprising a segment proper 11 and the supplemental segment or member is mounted for vertical shifting movements, and for this pur- .pose lateral arms or brackets 16 are secured to the segment 11. in any suitable manner, as by screws 17 and dowels 18. The supporting and guiding means Jfor the segment comprise two pairs of parallel bars or arms 19 and 20` both pairs substantially horizontally disposed, the pair 19 being arranged above the pair 20. The arms 19 are spaced apart at each side of the machine and their forward end portions are pi\ otally connected with the segment extensions 16. The extensions 16 terminate in rear-v wardly extending parallel ears 1Gn which receive shoulder screws 21 that pass loosely through the arms 19. Each shoulder screw has a hexagonal head terminating in a rounded top 21a. The tops 21a coperate with the heads of screws 22 that are threaded into the side plates 1 and project inward therefrom, said screws being held in adjusted positions by means of jamming nuts 22a. The heads of the screws 22 have no nicks, the nicks being preferably in the ends of the Shanks. The screws 21 and 22 coperate to prevent lateral vibration or displacement of the segment. The rear ends of the arms 19 have fixed pivots 23 projecting inward from the sides oil the plates 1. The lower pair of arms 2O are arranged A.within the base neer the sides thereof, their rear end portions being provided with hubs 24, which are secured by pins or set screws 25 to a rock shaft 26 which has bearings fixed on the plates 1. The forward' ends ot the arms 20 are pivotally connected to a frame or supplemental portion of the segment 11, which frame is adjustably connected to said segment and carries stops for limiting the up and down movements thereof. Said(y framevcomprises two vertical rods or bars 27 and a connecting cross bar 28. The rods 27 are arranged at the sides of the segment ll. lThe upper' end portion of each rod is reduced i and screw threaded, as indicated at 27u. The threaded portions engage in threaded openings in the extensions 16 and below such eX- tensions carry locking .nuts 29. T he lower ends or' the rods 27 are formed with hexagonal heads 30 and below these heads terminate in reduced threaded portions 31 on which are nuts 32. The cross har 28 is conri-ned between the hexagonal heads 30 and the nuts 32 which serve as clamps to make the frame comprising' the rods 27 and the cross bar 28 rigid. By loosening, the nuts the rods 27 may be rotated on their axes by a Spanner or other tool applied to the hexagonal heads 30, the nuts 29 of course being' also loosened to permit of such rotation. ,is a result of such rotation the frame 27, 28 and the segment 11 may be relatively adjusted, and after such adjustment may be rigidly held or set in fixed relationship hy tightening' or jamming the nuts 29. After thus adjusting or re-adjustmg the frame and segment, 'the Anuts 32 of course should be tightened. Brackets 33 are secured to the under face of the cross bar 28 in any1 suitable way, as by spot-welding7 each bracket comprising` a pair of downwardly extending ears between which is loosely arranged the forward end ot one ot the arms 20. Cross pins 35 secured in the ears 3d pivotally connect the arms 2O with the cross har 28 and consequently with the type har segment. The end portions of the cross bar 28 project outward beyond the rods 27 and are provided with pads 36 ot liber or the like at their top and bottoni faces.. These pads constitute stop devices. cach pad coperating; with a stationary Itop device. The 'stationary stop devices are constituted by brackets 37 cast as p'f .t ot or otherwise suitably secured to the side 'plates 1 and each bracket comprises an inwardly extending lug or stop proper 38 and a lower inwardly extending' lug 39. The lug' is broader than the lun' 38 and provides a support for an adjustable stop plate proper 'i0 which is connected to its support 39 by three screws,- the two outer screwsl 4i being ,headed and passing upward loosely through the support 39, screwing into threaded openings in the stopv plate 40. The middle screw 42 is threaded-through the support 39 and abuts against the lower face of the stop plate 4,0, holding it in its uppermost position as determined by adjustments of the side screws fil. The upper pad 36 on each side of the stop bar cooperates with a lug 38 to limit upward moi-'ement of the `frame 27-28 and segment ll while the under pads 36 coperate with the stop plate 40 to limit downward movements oi said `parts. Normally the segment is maintained in its upper position by spring devices, said spring devices comprising a wire spring 43 coiled around the rock shaft 26 at its left-hand side. The i inner end of said spring is hooked into an angular bracket 4:4 screwed to the rear of the frame plate 2, thus providing a stationary anchorage for the spring. The lefthand end portion of the spring is secured in a collar l5 loosely mounted on the shaft 26. The outer end portion of said collar is pro vided with ratchet teeth which engage with corresponding ratchet teeth formed on the inner face of the left-hand hub 24. The collar is provided with holes to receive a tool by which it may be rotatedv to provide for varying the tension of the spring` d3. After adjustment the spring serves to maintain the collar set by engagement of the two sets oi ratchet teeth. The spring 43, acting through the arms 20, normally overcomes the force oi' gravity and maintains the type bar segment and the trame depending therefrom in upper position with the top stop pads 36 engaged with the lugs 38. In this position the inner or lower case types on the type blocks 9 are adapted for printing.

In order to shift or depress the segment for printing with the outer or upper case types, key operated devices are provided, said devices operating on the shaft 26 to rock it and swingor move the arms 2O and connected parts downward. The key operated devices comprise a bail or member 46 having a body or cross portion 47 and two downwardly bent parallel arms 48 provided with hubs 49 which bear loosely on the rock shaft 26 outside the crank arms 20. A central npstanding rod or arm 50, fixed to the roclr shaft 26? is provided with a T-head 5l to 'which the bail 4:6 is secured by screws 52 passing downward through the cross portion 47. The construction is such that the central portion of the hail is fixed to the central portion of the rock shaft, the end portions or arms 48 of the bail bearing` loosely on the rock shaft. Lateral headed pins 53 extending outward from the upper end *i portions of said arms are engaged loosely hy the rear ends ot horizontally disposed links 54, said links being provided with slots indicated at 55 which receive the pins 53. The forward ends of said links are pivotally connected at 56 with the upwardly extending arms 57 of shift key levers, which further comprise forwardly extending arms 58 and hub portions 59, said arms 58 terminating' in shift keys 60. lThe hub portions 59 hear rotatably on a transverse pivot rod 61 secured at its ends in the side plates 1. Draw springs 62, anchored at their rear ends to stationary pins 63 and at their forward vends hooked into the arms 57 restore the trains oi key operated de vices comprising the parts 54, 57 and 58 to meente normal or lower case position after a downward shifting operation and tend to maintain the lever arms 57 engaged with stop pins 64 that project laterally inward from the side plates 1. Theconstruction is such that the keys 60 are independent of each other, the looseor lost motion connection' 53, 55 permitting the bail 46 and rock shaft 26 to be rocked by depressing one of the keys 60 without affecting the other key and the parts controlled thereby. The keys 60 are spaced apart, being arranged at opposite sides of the printing keyboard and the anguiar levers 57, 58 may be kept in proper position 'on the pivot rod 61 by means of p Xed collars 65 which loosely confine the hubs 59 between said collars and the adjacent side plates 1. It will be observed that as a result of the described construction the ull, transmitted to either link 54 actuated Ey the associate shift key 60, is further l l transmitted through the pin 53, bail 46 and the middle portion of the rock shaft 26, so that the torsionto which such rock shaft is subjected does not produce unequal motion of the two links or arms 20.

Also it will be observed that the shift frame is provided with stop devices comprising the parts 36 and 37 which are independent of the stop devices 64 of the actuating mechanism 'controlled by the keys 60; also that after the extent of shifting movement ot' the segment llfand its depending : trame 27, 28 has been determined j ustment of the stops 38 and 40, the position 'or location of the segment 11 maybe independently varied hr set through adjustinnr the relationship between said segment and its frame 27, 28, as has been described. Duringfthe up and down shifting movements of the segment the rounded tops 21 of the heads of the screws 21 coperate with the heads ot the adjustable screws 22 to assist in guiding the segment, preventing/ un! due sidewisemovement or vibration.l The screws 22 are so adjusted in respect to the screws 21 that the free up and down shift ,of the segment is not impeded but any-undue side movement is prevented. The heads of the screws 22 are of such diameter that in both lower and upper case positions the rounded tops 21a are contiguous to said heads so that at all times the segment is gui-ded and controlled in respect to lateral vibration. It will be further understood that a lock of any suitable description may as usual be provided in connection with one of the shift key levers to hold the segment depressed in upper case position.

The type bars hitherto described are provided each with a train of key controlled actuating,r devices. Each train coperates -with a cam slot 66 in the associate type bars and comprises a bell crankhaving a lon arm 68 and a short arm 69. The bell cranks with a headed pin 84 by the relative ad? 4so that if one of the are ymounted in slots indicated at 70, formed in the member 14, said bell cranks having a common segmental pivot wire 70 mounted on said member 14. The long arm 68 of each bell crank is provided with a headed pin 71 which engages in the slot 66 of the associate type bar and operates the latter. The shorter arms 69 of the bell cranks vare connected by links 72 with the upstanding arms 73 of another set of bell cranks which comprise also arms 74, said bell cranks being pivoted on a pivot wire 75 supported on a frame that is detachably mounted in the basent the machine and comprises rear and front bars 76 and 77 and connecting end bars 78. Each bell crank 73, 74 is provided that engages in the cam slot, indicated at 85,'formed in the rear end portion of the key lever. There are two kinds of key levers 86 andV 87, differing somewhat in shape, each key lever 86 being provided with a printing key lever 88 and being pivoted on a fulcrum rod 89 common to all of the key levers 88. Guide slots 90 in the bar 77 receive the key levers 86 and 87. The key levers 87 have keys 88 and are pivoted on a common pivot wire 91. Draw springs 92, connected to the lever arms 69 and anchored to stationary hooks 93, assist to restore the type bars after actuation.

The type bars and their actuating mechanism need not be more fully described herein since they are primarily the subjectmatter of my prior application aforesaid and are claimed in said application and not inthe present one.

It will be understood that when one of the key levers is depressed the bell crank 737 74 that is directly connected to it is rocked, this motion being transmitted through the pull links 72 to the connected bell crank 68, 69, said bell crank operating through its pin 71 on its cam slot 66 to swing` the connected type bar upward and rearward to print against the platen- Preferably the type bars are provided with shoulders 98 that, toward the latter part of the type bar movement, coperate with a universal bar 99 that is comprised in the carriage feeding mechanism, 'the universalbar being mounted to shift with the segment 1l. When said segment is in the upper position, in which position it prints lower case, the inner types on the type bars will print as has been stated. `When, however, one of the shift keys 60 has been operated, the type bar segment will be lowered or depressed, as has been explained,

printing keys be actuated, the outer type on the connected type bar will be caused to print. The levers 73, 74 do not participate in case shifting movements and when such shifts take place the links 72 swing about their pivotal points of connection with said levers as centers.

It will be observed that by my present ward therefrom, being provided with stop devices which coperate with stationary stop devices; that said rock shaft is operated by independent shift keys which are arranged at opposite sides of the keyboard, said shift keys being connected to links which in turn are loosely connected with parallel rocking arms comprised in a bail or fore and aft rocking frame mounted on said rook shaft; that the connection be` tween the rock shaft and the shift keys comprises three arms, a central arm as 5() and two end arms as 48, the central arm being fixed to the rock shaft and the two end arms loose thereon, connections, as the cross har 4:7, being provided for connecting -the three arms; that there are provided sets of stops for the type bar support and other sets of stops for the shift keys and connected devices for moving said support; and that when the type bar segment is shifted the bell crank levers 68, 69 shift therewith and that at this time the links 72 swing about their rear pivotal connections with the stationary bell cranks 73, 74: which, together with the key levers, remain motionless during the shifting operations.

ll] hat I claim as new and desire to secure by Letters Patent, is :f

'1. In a front strike typewriting machine, the combination of a platen, type bars, a support therefor, a frame rigid with said support and adjustably connected thereto, said frame comprising a cross barvextending from side to side of the machine within the base, and means for controlling and guiding said support comprising two pairs of parallel pivoted arms, one pair arranged above the other, one pair of said arms being connected to said support nee: its outer ends and the other pair being spaced apart within the base of the machine and connected directly to said cross bar near its ends.

2. In a front strike typewriting machine, the combination of a platen, type hats, a support therefor, a U-shaped frame adJustably connected to said support and depending therefrom, and means for shiftablycontrolling said support, said means comprising two pairs of parallel arms, one pair connected with 'the lripper part of said support and extending rearward therefrom and hav- 1,ssa,375

and said segment, stops for said frame, a

pair of parallel arms having stationary pivots and connected with said segment, a second pair of parallel arms connected directly with the lower portion of said frame, said second pair of arms being spaced apart so that they are located near the sides of the base of the machine, a rock shaft 'on which said second pair of arms are fixed and key controlled means for rocking said shaft.

4. In a typewriting machine, the com-- bination of a platen, a type bar support, and key operated means for effecting a relative shifting movement between said support and said` platen, said means comprising. a rock shaft, a central arm iiXed thereto, two end arms loosely connected to said rock shaft, and means for connecting said central arm with said end arms.

5. In a typewriting machine, the combination of a platen. type bars, a support for said type bars, and means for controlling said support, said means comprising a rock shaft, a bail having parallel arms loosely surrounding said rock shaft near its ends, a central arm xcd to said rock shaft and to said bail. independent shift keys at opposite sides of the keyboard, and connections be tween each of said keys and one of said parallel arms.

fi. In a typewriting machine, the cornbination of a platen` type bars, 'a support for said type bars. and means for controlling said support` said means comprising a rock shaft` a bail having parallel arms loosely surrounding said rock shaft near its ends, a central arm fixed to said rock shaft and to said bail, shift key levers spaced apart. and links connecting` said shift key levers with said parallel arms.

7. In a typewriting machine, the com bination of a platen, typel bars. a support for said type hars, and means for controlling saidy support. said means comprising a rock shaft. a bail having parallel arms loosely surrounding said rock shaft near its ends` a central arm fixed to said rock shaft and to said hail. shift key levers. links pivotally connected tu said shift key levers and having loose conmctions with said parallel arms, stops for seid levers.. and springs noi mally maintaining l aid key levers in engagement with said stops.

lll

teasers 8. ln a typewriting machine, the combination of a platen, type bars, a type bar segment, a frame rigid" with said segment and comprising two parallel uprights and a conmeeting cross bar, stop devices on said frame, cooperative stationary stop devices, means for ailording relative adjustment between the uprights of said frame and said segment, key operated devices for shifting said frame and said segment and having a lost motion connection. with said segment, said devices comprisinga key lever, and stop devices for said key lever.V

Y 9. In a front strike typewriting machine, the combination or' a platen, type bars, a vertical type bar segment, a frame compris.- ing two vertical rods or bars and a cross bar connecting the lower end portions of said rods or bars, the upper portions of said rods having' adjustable screw connections with side portions of said segment, stop dev'ices cooperative with said cross bar for limiting'` up and down movement of said segment, key operated shifting devices connected to said segment, and stop devices for said key operated devices.

l0. ln a front strike typewriting machine. the combination of a platen, type bars, a vertical type bar segment, a frame compris ingl two vertical rods or bars and a cross bar connecting the lower end portions oi said rods or bars, the upper portions or' said rods having adjustable screw connections with side portions or" said segment, horizontally disposed parallel arms havingf stationary pivotal centers and being pivotally connected with said segment, other horizontally disposed parallel arms parallel also to the irst pair and arranged below'the same in the base of the machine, said other parallel arms havingpivotal connections with Said cross bar, a, rock shaft to which said other parallel arms are Hired, and key operated devices for controlling said rock shaft.

ll. 'In a front strike typewriting ma chine, the combination of a platen, type' bars, type bar segment, a frame comprising two vertical rods or bars and a cross bar connecting said rods or bars, said rods having' adjustable screw connections with said segment, horizontally disposed parallel rocking arms pivotally connected with. said segment, other horizontally disposed parallel arms parallel also to they first pair and arranged below the same in the base of the machine, said other parallel arms having pivotal connections with said cross bar, a key operated rock shaft to which said other pair ,of parallel arms are fixed, and a counter- {ialancing spring surrounding said rock shaft and anchored to the frame of the machine.

l2. "in a iront strike typewriting machine,

combination of a platen, type bars, a support therefor, means for controlli and guiding said support comprising' sets of parallel arms, and means for preventing sidewise movement of said support, said means comprising contact devices movable with said support and having rounded heads, and headed' adjustable screws projecting inward from the sides of the frame, the heads of the screws having uninterrupted plane surfaces and providing contact devices with which said rounded heads cooperate, the ends of the Shanks of said screws being provided with nicks for receiving?` an adjusting;r took 13. in case shitting; mechanism for typewriting machines, the combination of a shiftable element, an upanddown movable frame connected to said element, a fore-andaft rocking bail, key actuated devices connectedto said bail near its ends,`and equalizing devices for transmitting the shifting movement from said hail to said shiftable o element and to said frame.

14. ln case shifting mechanism for typewritingmachines, the combination of` a. shiftable element, an up-and-down movable frame connected to said element, a oreandaft rocking bail, key actuated devices connected to said bail near its ends, a rock shaft., arms tired to said rock shaft near its ends and pivotally connected to said frame, and

a central arm fixed to said rock shaft and rigidly connected to said hail.

l5. ln case shittin mechanism for typewriting machines, a s iiftalole element, a rock shaft having arms connected to said element, a bail loosely mounted on said rock shaft,

key actuated devices connected to the ends A oit' said bail, and a connection between said bail and said rock shaft whereby when the bail is actuated at either end its motion is transmitted substantially equally to both ot said arms through said rock shaft.

16. In a typewritiner machine, the lcombi-A nation of a type bar segment, a pair of pivoted arms pivotally connected thereto, a

vertically movable frame having an adjust-- able connection withsaid segment, a second pair oi pivoted arms connected to said ver tically movable frame, a rock shaft on which said second pair oi' arms are supported, a i.

bail loosely pivoted on said rock shaft, an arm rigidly connected to said rock shaft and to said bail, shii't keys one at each side ot the keyboard, 'and connections between said keys and the end portions of said bail.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 10th day of September, je... D. 1917.

` JHN l-l. BARR. Witnesses z @sans Sierre lift. Wanne,

Miti

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