US1841104A - Typewriting machine - Google Patents

Description

Jan. 12, 1932. GARBELL 1.841,]04

TYPEWRITING MACHINE Filed April 24, 1925 3 Sheets-Sheet l 1932. M. GARBELL TYPEWRI'TING MACHINE 5 Sheets-Sheet 2 Filed April 24, 1925 Jan. 12, 1932. M. GARBELL 1,841,104

'TYP EWRITING MACHINE Filed April 24, 1925 3 Sheets-Shea 3 Patented Jan. 12, 1932 UNITED STATES PATENT OFFICE MAX GARBELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO VICTOR ADDING- MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS TYPEWRITING MACHINE Application filed April 24, 1925. Serial No. 25,491.

The invention relates to improvements in zypewriters and particularly to a mechanism for controlling the actuation of the .platen :arriage and for also actuating a typewriter TlbbOIIfeEd and reverse and ribbon vibrator mechanism.

It is one of the objects of the invention to provide a construction including a universal )ar located and constructed so that it may be mgaged and actuated upon the operation of my one of the several type bar levers and to :ause this universal bar to operate escapenent mechanism controlling the movement of Lhe platen carriage and allow the movement )f the carriage upon each actuation of the Lype bars, the escapement also allowing the platen carriage to be moved to arrange it in iposition to allow its beingfoperated upon :he operation of any of said key levers.

It is a further object to provide a member )1' universal bar similar to that just referred :0, which member or bar isprovided with .neans for actuating a ribbon feeding mechanism. In addition tothe above, it is an obiect to provide a universal bar such as above iescribed with a detent which is a stationary part of the universal bar and to also provide this universal bar with another detent which is movable with saidmember and also with respect thereto upon axes which are transverse to each other, the detents being designed to alternately engage a toothed element of Zhe carriage controlling mechanism.

It is an additional object to form said universal bars so that they are U-shaped and to pivotally mount said. members between the ends of the parallel portions of the U to there- Jy produce an extension which may cooperate with a stop to limit the movement of said ends in opposite directions;

It is a further object to construct a part of the type bar actuating mechanism so that it may engage the U-shaped universal bars to iccomplish the desired ends. Y

It is also a feature of the inventionto combine a ribbon vibrator mechanism with a universal or U-shaped bar structure so that the vibrator mechanism may be operated upon the actuation of said bar.

The invention has these, and other objects all of which will be explained and more readily understood when read in conjunction with the accompanying drawings, which illustrate one embodiment of which the invention is susceptible, it being obvious that changes and modifications may be resorted to without departing from the spirit of the appended claims forming a part hereof.

In the drawings,

Fig. 1 is a sectional view showing certain portions forming the basis of the invention in elevation.

Fig. 2 is a top plan view of the structure shown in Fig. 1.

Fig. 3 is a sectional view taken on line 33 of Fig. 2 looking in the direction of the arrows, and i Fig. 4'is a sectiontaken on line 44 of Fig. 2.

In the embodiment of the invention illustrated, two substantially U-shapeduniversal bars and 11 are employed, one, such as 10, being utilized for the purpose of actuating the carriage escapement and the other, such as 11, for the purpose of causing the operation of the ribbon winding mechanism. These substantially U-shaped universal bars 10 and 11 are pivoted upon the shaft 12, which is mounted in a frame 13 which is stationarily mounted with respect to other portions of the structure. The frame 13 carries a toothed element 14 which is connected through the medium of a shaft 15 with a gear 16, the latter co-operating with a rack 17 which is part of the platen carriage, the carriage being manually movable in one direction and automatically movable in the reverse direction by means of a spring or other suitable arrangement such as now employed.

The frame 13 has another frame 18 secured thereto. This frame 18 extends beyond relative to the bar 11. "The U-shaped universal bar's'lO and 11 are arranged one within the other, or in nested relation, as clearly illustrated in Figs. 1, 2 and 3. The universal bars 10 and 11 are so nested that the front portions thereof extend substantially parallel to the front of the machine and are close enough together so that they may be moved upon the actuation of key-levers 21 through the medium of intermediate levers 22, the latter being connected as shown to the type-bars 23, which are pivoted at 23. When the key levers are depressed, the intermediate levers are moved downwardly around their pivots as shown in dotted lines in Fig. 1, whereupon the foot or heel portions 24; of the intermediate levers 22 strike said bars 10 and 11 and depress them as also shown in Fig. 1.

As shown in Fig. 2, the heel portions of the intermediate levers are, radially arranged,

that is, they extend in directions which have their centers within the central portion of the machine and fan outwardly toward the front of said machine. As best shown in Fig. 2, this results in the distance between the point where the intermediate lever heel strikes the universal bars and the pivotal mounting of said levers progressively decreasing from the middle of the machine towards the sides thereof. The leverage is, therefore, greater at the sides which is of marked advantage, because at'these latter points the little and ring fingers are operating the keys and, as .is well known, these fingers are not as strong, and therefore not as effective in depressing, the keys, as are the other fingers of each hand. Moreover, it is Y inevitable, of course, that with the modern typewriting machine and touch-writing methods the centrally disposed keys are struck by the strong fingers whereas the side keys are struck by the weaker fingers.

My arrangement of actuating the universal bars through the radial extending portions of the intermediate levers results in a uniform pressure on said bars, irrespective of whether the key struck is in the center or at the sides of the machine.

As hereinafter pointed out, this intermediate lever heel actuation of both universal bars is of marked advantage because,

. as will appear from an inspection of Figs. 1

and 3, these sequence of operation of these bars depends upon the way in which said heel strikes said bars. In other words, as best shown in Fig. 3, a heel having a straight lower edge will first contact with bar 11 and move it a considerable distance before it contacts with bar 10. Accordingly, the sequence of operation, as well as the depth to which the bars are depressed, is a function of the shape of the heel portion, and as indicated above a straight edge portion operates as described.

It is therefore proper to indicate that the sequence of operation of the bars (bar 11 is operated efore bar 10) and the depth to which the bars are depressed (obviously bar 11 is depressed more than bar 10) are governed by, or are functions of, the shape of the bottom of the intermediate lever heel portion. This heelportion' is shown somewhat elongated in order that the above described progressive decrease in leverage distance may be taken care of. i

I have found this method of uniform bar actuation of extreme benefit because, as above et 26 which carries a movable detent or stepping dog 27 which latter is designed to cooperate with the toothed element 14 to assist in controlling the actuation of the platen carriage.

The bracket 26 is provided with a projection or holding dog 28 which also is provided for the purpose of cooperating with the toothed element 14 to assist in controlling the actuation of the platen carriage. The bracket 26 carries a member 29 which is pivotally secured at 30 to the bracket 26. This member 29 provides a support for the stepping dog 27 which latter is pivoted at 31 so that it may be moved by the coil spring 32 when it (the dog 27) is moved out of engagement with a tooth of the toothed element 14. The spring 32 has, as before stated, one end thereof secured to a portion of the detent 27 and has its opposite end secured to an car 33 which is part of the member 29, which latter is pivoted at 30.

This pivoted member 29 has-another ear 34 which is arranged below the plate 25 of the universal bar 10 and is provided with a set screw 35 whereby the movement of the pivoted member 29 may be controlled and regulated, and thereby providing an adjustment to compensate for wear or other irregularities in the dog 27. The pivoted member 29 is provided with a hook-shaped element 33 clearly shown in Fig. 4, to which a coil spring 37 is attached, the opposite end of the spring being secured to any suitable stationary part of the structure such as the plate 25, the spring being provided to maintain the detent 27 in cooperative relation with the toothed element -14 and to also permit the element 29 to be rocked upon its pivots 30 when the carriage is manually restored to its initial or starting position, thus allowing the dog 27 to ride over the teeth of the. toothed element 14 during this movement of the carriage.

The universal bar 10 has its opposite extremities, such as 38, extended beyond the pivot 12 thereof and is provided with a coil spring 39 which will normally tend to main tainthe arms 3838 in contact with the lowor projections 19 of the frame '18 and also maintain the opposite end of the bar in an elevated position with the stepping dog 27 in cooperative relation with the toothed element 14. An adjustable stop 40 is provided for cooperation with the pivoted detent 27 to limit the movement of the detent 27 in one direction, in the case shown, the stepping direction.

From the foregoing description it is manifest that, when the forward end of the universal bar 10 is depressed, the holding dog 28 which is a part of the bracket or support 26, is moved upwardly into engagement with one of the teeth of the toothed element 14, thus moving the stepping dog 27 out of engagement with the toothed element or escapement ring 14, the toothed element and the carriage being held thereby against movement. Spring 32 then rotates dog 27 around pivot 31 to move said dog 27 against the hook 36 or one-tooth space and into position to step said wheel 14 and advance the carriage one space. Then upon release of the universal bar 10, the pivoted detent or stepping dog 27 to rotate until the detent 27 engages with the adjustable stop 40 or a distance of one space.- The toothed element or wheel 14 is then held against further movement until the universal bar 10' is again depressed, which will permit the detent 27, due to the action of the spring 32, to assume a position in engagement with the hook 36, in which it may engage one of the teeth of the toothed element 14 upon the release or elevation of the forward end of the bar 10. Thus it'is evident that upon each depression and-elevation of the bar 10, the toothed element 14 is permitted to rotatea certain degree, allowing the platen carriage to be moved a corresponding distance.

The U -shaped universal bar 11 is also provided with a plate 41 which extends from one arm of the U to theother. This plate is provided with a pawl 42 which engages with a ratchet 43. the latter being provided upon a shaft 44 which is rotated upon the actuation or depression of the universal bar 11, causing a certain mechanism, not shown, to

drive the ribbon rolls.

It is a feature of the invention to employ last mentioned mechanism forms the basis of another application Ser. No. 37,085, filed June 15, 1925, and therefore will not be described in detail herein.

From the foregoing description, it is manifest that an arrangement is provided which employs a means capable of engagement and operation by any one of the several type bar actuating members which are secured to their respective key levers that is, by intermediate, and particularly in the. present embodiment of the invention, by'the foot of said links. Furthermore, upon each depression of the bar such as 10, the detent such as holding dog 28, is brought into engagement with the toothed element 14, releasing the pivoted detent 27 from engagement with the toothed element and permitting it to move on its pivot 31 so that it may assume a position above one of the several tooth portion ofthe toothed element 14. It is further evident that, as the bar 10 is released, the pivoted detent, or stepping dog 27, will be depressed and caused to engage one of said teeth and by virtue of its pivotal connection is permitted to move into engagement with the stop 40. This movement allows a slight rotation of the tooth portion or wheel 14, the gear 16, and also a consequent longitudinal movement of the rack 17 and the platen carriage, in which position these parts will remain until the bar 10 is again depressed or unless the rack 17 is moved away from the escapment pinion16.

It is further evident that, when the platen carriage is manually moved to its initial or starting position, this may be accomplished even though the detent 27 is in engagement with the toothed element 14, because of the pivotal connection between the part 29 and the bracket 26 which allows the detent or dog 27 and the bracket to be moved on the pivot to permit the free rotation of the toothed portion 14 upon the movement of the carriage to its initial or starting position, the action of the spring 37 permitting the pivotal member 29 to move and be restored during this movement of the platen carriage,-

the action of the spring 37 being limited by the cooperation of the adjusting screw 35 carried by the ear 34 and the engagement of the screw 35 with the part of the plate 25. It will be understood that the frame 13, the auxiliary frame 18 secured thereto, and the parts they support, can be positioned as a unit and detachably secured to a part of the main frame of the machine so as to permit them to be removed as a unit.

Theutilization of universal bars such as 10, and 11, disposed in the manner shown and the combination thereof with key levers disposed radially and rack bars or intermediate bars likewise disposed and having the elongated feet or bottom edges 24, results in a uniform pressure being applied by the type bars upon the actuation of any of the various radially arranged key levers and intermediate bars or links.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a typewriter, a universal bar, an intermediate lever adapted to operate said bar, a star-wheel, stepping and holding dogs in vertical alignment for alternate engagement with opposite sides of said wheel, and means -for operating said dogs to permit stepping of said wheel when said lever strikes said bar.

dog mounted in verticalalignment with said wheel and in vertically vibratable relation thereto to effect stepping movements thereof, and adjustable means whereby said dog and wheel may be disengaged during manual .movement of said rack, said last means comprising an independent pivotal mounting for said dog and yieldable means biasing said dog in wheel engaging position.

4. In a typewriter, a carriage rack, an escapement pinion meshing therewith, a star- Wheel associated with said pinion, a stepping dog in vertical alignment with' said wheel, means for mounting said dog for movement thereof in two substantially perpendicular directions for stepping said wheeland for allowing manual movement of said rack, and

' adjusting means for regulating the extent of movement of said dog in each of said di-' rections. 1

5. In a typewriter, a carriage rack, an escapement pinion meshing therewith, a starwheel associatedwith said pinion and rotatable in a vertical'plane', and a stepping'dog movable in a vertical plane for disengagement and pivotally mounted .in a horizontal plane for stepping.

6. In a typewriter, a star-wheel adapted to step an escapement pihion, a universal bar, a bracket movable by said bar about an axis transverse to that of said star-wheel, a stepping dog mounted on said bracket to be moved by said bar vertically in the same plane as said wheel during stepping movement of said wheel and to be moved horizontally after release from said wheel, and'a holding dog fixed in the same relation as said bracket and movable vertically therewith.

7. In a typewriter, a star-wheel adated to step an escapement'pinion, a universal bar, a bracket movable by said bar, a member pivotally mounted on said bracket, a stepping dog pivotally mounted on said member for horizontal movement relative thereto and to said wheel, and said member and said bracket moving together during stepping movement of said dog, said member moving independently of the bracket at other desired times.

8. In a typewriter, a star-wheel adapted to step an escapement pinion, a universal bar, a bracket movable by said bar, a member pivotally mounted on said bracket and being yieldingly held in fixed relation therewith, a

stepping dog pivotally mounted on said member for horizontal movement relative thereto and to said wheel, and said member and said bracket moving together during stepping movement of said dog, said member moving independently of the bracket at other desired times, and a holding dog movable by said bar in the same sense and amount as is said bracket.

9. In a typewriter, a universal bar, a bracket mounted on said bar, a star-wheel, a holding dog also mounted on said bar, an element yieldingly mounted at the upper portion of said bracket, a horizontally movable stepping dog mounted on said element to be moved vertically upon movement of said bar, spring means causing horizontal move-' ment of said dog, and means, including the mounting of said element, permitting vertical movement independently of said bar.

10. In a typewriter, a universal bar, a

. bracket mounted on said bar, a star-wheel, a

holding dog also mounted on said bar, an element yieldingly mounted at the upper portion of said bracket and urged into fixed relation therewith by a spring, means comprising an adjustable portion on said bracket for regulating the amount of yielding movement of said element, a horizontally movable stepping dog mounted on said element to be moved vertically upon movement of said bar,

means causing horizontal movement of said dog at predetermined times, means, including the mounting of said element, permitting vertical movement independently of said bar and a predetermined amount, and means for regulating'said last amount comprising an adjustable abutment for said dog.

11. In a typewriter, a universal bar, a bracket comprising oppositely disposed standards mounted thereon, an element pivotally mounted between said standards for limited movement, means for adjusting the extent of movement permitted to said element, spring means for holding said elementin fixed relation with said bracket during stepping movement thereof, a star-wheel journalled in a fixed portion of the typewriter and rotatable in a vertical plane, a holding dog cooperable with said wheel and mounted on said bar, a stepping dog mounted on said element to move pivotally horizontally with respect thereto, spring means I for causing said latter movement when said dog is disengaged from said wheel by the movement of said bar, and adjusting means for regulating the stepping movement of said dog comprising a movable abutment mounted on said bracket.

12. In a typewriter, a universal bar, intermediate levers provided with portions to engage and actuate said bar upon printing movements in said typewriter, a bracket comprising oppositely disposed standards mounted thereon, an element pivotally mounted between said standards for limited movement, means for adjusting the extent of movement permitted to said element, spring means forholding said element in fixed relation with said bracket during stepping movement thereof, a star-wheel journalled in a fixed portion of the typewriter and rotatable in a vertical plane, a holding dog cooperable with said wheel and mounted on said bar, a stepping dog mounted on said element to move pivotally horizontally with respect thereto, spring means for causing said latter movement when said dog is disengaged from said wheel by the movement of said bar, and adjusting-means for regulating the stepping movement of said dog comprising a movable abutment mounted on said bracket.

13. In a typewriter, a universal bar, intermediate levers engaging said bar, and means associated with said levers and bar for insuring substantially uniform pressure by said levers on said bar irrespective of whether the link is centrally or side positioned, said means comprising a substantially straight portion of said bar extending parallel to the front of the typewriter,.and radially extending links engaging said straight bar portion whereby the effective leverage of said links progressively increases'toward the sides or little finger key levers of the typewriter.

14. In a typewriting machine, a U-shaped universal bar the front or cross portion of which is substantially parallel to. the front of the machine, and a plurality of pivoted intermediate levers-having portions extending radially from a central point of said ma chine toward the front thereof, said portions engaging said bars at varying distances from the lever pivots thereby givin greater leverage for the side levers than for the central levers and resulting in the application of uniform pressure to the bar irrespective of what lever is actuated.

15. In a typewriting machine, a U-shaped universal bar'thefront or cross portion of which is substantially parallel to the front of the machine, and a plurality of pivoted intermediate levers having substantially straight rearward and lower foot portions extending radially from a central point of said machine toward the front thereof, said portions engaging said bars at varying distances from the lever pivots thereby giving greater leverage for the side levers than for the central levers and resulting in the application of uniform pressure to the barirrespective of what lever is actuated.

them. 1

18. In a typewriter machine, a ribbon vi-.

brating and feeding bar, an escapement operating bar, said bars being U-shaped and the cross or leg connecting portions of the two bars being parallel to each other, and an intermediate lever having a portion adapted to engage both of said cross portions to operate said bars.

19. In a typewriter machine, a ribbon vibrating and feeding bar, an escapement operating bar, said bars being U-shaped and being mounted for pivotal movement near the ends of the arms of said U while the cross portions of said bars are parallel to each other, and stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms.

20. In a typewriter machine, a ribbon vibrating and feeding bar, an escapement operating bar, said bars being U-shaped and being mounted for pivotal movement near the ends of the arms of said U while the cross portions of said bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, and intermediate levers adapted to strike both of said cross portions to move said bars as dictated by said stops.

21. In a typewriter machine, a ribbon vibrating and feeding bar, an escapement operating bar, said bars being U-shaped and being mounted for pivotal movement near the ends of the arms of said U while the cross portions of said bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, intermediate levers pivoted in' said machine and adapted to so strike said bars that a uniform pressure is placed on the latter irrespective of the position of the operating link with respect to 7 portions of said bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, intermediate levers pivoted in said machine and having foot portions so arranged to strike said bars that the distance from the point of contact on said links to the pivot thereof progressively decreasesas the side links are approached 23. In a typewriter machine, a ribbon v1- brating and feeding bar, an escapement operating bar, said bars being U-shaped and being mounted for pivot-a1 movement near the ends of the arms of said U While the cross portions of said bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, intermediate levers pivoted in said machine and having foot portions extending radially from the center of said machine to the front thereof and arranged so to strike said bars that the distance from the point of contact on said links to the pivot thereof progressively decreases as the side links are approached. 24. In a typewriter machine, a pair of nested U-shaped universal bars, and means for striking and operating said bars comprising the heel portions of one of the levers in the type action of said machine wherefrom the sequence of operation of said bars, thenumber of said bars operated by each lever, and

the distance each bar is to be moved may be individually controlled by predetermination of the shape of said heel portion.

25. In a typewriter machine,a pair of nested 'U-shaped universal bars, and means for striking and operating said bars comprising the heel portions of intermediate levers adaptedto contact one or both of said bars.

26. In a typewriter machine, a pair of nested U-shaped universal bars, and means for striking and operating said bars comprising the heel; ortions of intermediate levers, said portions eing shaped to bridge said bars and operate the latter in a sequence and number predetermined by the shape of said heels.

'27. In a typewriter machine, an escapement pinion, a shaft carrying the latter, a star-wheel mounted on said shaft, a ribbon vibrating andfeedin'g universal bar, an escapement operating universal bar, mechanism for permitting movement of said wheel when said lastmentioned bar is moved, a

' shaft providing acommon pivotal mounting for said bars, and a bracket-like member for supporting all said mechanism, said member and said mechanism being removable as a unit from said machine. I

28. In a typewriting machine, a ribbon vibrating and feeding bar, an escapement opcrating bar, said bars being U-shaped and being mounted for pivotal movement near the ends of the arms of said U while the cross portions ofsaid bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, and intermediate levers pivoted in said machine and having foot portions arranged to strike said bars so that the distance from the point of contact on said levers to the pivot thereof progressively decreases as the side levers are approached.

29. In a typewriting machine, a ribbon vibrating and feeding bar, an escapement operating bar, said bars being U-shaped and being mounted for pivotal movement 'near the ends of the arms of said U while the cross portions of said bars are parallel to each other, stop means limiting the movement of each of said bars in each direction, said means contacting with the ends of said arms, and intermediate levers pivoted in said machine and having foot portions extending radially from the center of said machine to the front thereof and arranged to strike said bars so that the distance from the point of contact on said levers to the pivot thereof progressively decreases as the side levers are approached.

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