US1411604A - Typewriting machine - Google Patents

Description

E. E. BARNEY.

TYPEWBITING MACHINE.

APPLICATION FILED DEC. 1. 1920.

Patented Apr. 4, 192 2;

2 SHEET S-SHEET 1- INVENTUR M f A 57% H5 ATTORNEY Ill.

E. E. BARNEY.

TYPEWRITING MACHINE.

APPLICATION FILED 056.1. 1920.

2 SHEETS-SHEET 2.

WITNESSES INVENTUR Kw/A MW (5% E. 6

HIE ATTURNEY Patented Apr. 4, 1922.

EDWIN E. 'BARNEY, OF NEW ROCHELLE, NEW YORK, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OF ILION, NEW YORK, A. CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Application filed December 1, 1920.

To all whom it may concern:

Be it known that I, EDWIN E. BARNEY, citizen of the United States, and resident of New Rochelle, in the county of Testchester and State of New York, have invented certain new and useful Improvements in 'lypewriting Machines, of which the following is a specification.

My present invention relates to universal bar mechanism for writing machines and its principal object is to provide new and im- Eroived mechanism of the character speci- To the above and other ends which will hereinafter appear, my present inventiontion consists in the features of construction, combinations of devices and arrangements of parts hereinaftef described and particularly pointed out in the claims.

In the accompanying drawings,

Figure 1 is afragmentary front to rear vertical sectional view of a typ'cwriting machine embodying my invention and so'much of said machine being illustrated as is necessary to a full understanding of said invention.

Figure 2 is an enlarged vertical sectional view taken on planes indicated by the broken dotted line 0c-m in Figure 1 and looking in the direction of the arrow at said line.

Figure 3 is a erspective view illustrating the universal bar mechanism and its mounting.

Figure 4 is an enlarged sectional view of a detail." I

The ty e'writing machine illustrated in Fig. 1 and which is of the style more fully shown in the application of John H. Barr and Edwin E. Barney, Sr. No. 403,? 80, filed August 16, 1920, and my prior application Sr. No. 419,745, filed October 26, 1920, embodies the preferred form of myinvention. Themain frame of the machine comprises side frames 1 connected'at the rear by a cross plate, not shown, and at the front by a- U-shaped frame member 2 which encloses the keyboard. Above the main frame is arranged a platen .3 diagrammatically illustrated, said platen being mountcdon a carriage (not. shown) which is arranged for movement back and forth from side to side of the machine. Co-operative with the front face of the platen are type bars ipivoted on a common fulcrum wire 5 that is mount- Specification of Letters Patent.

Patented Apr. 4, 1922'.

Serial No. 427,589. 2

ed on a segmental support 6, each type bar I 9 which in turn is supported from the seg-' ment 6. The rear end portions of the type bars are provided each with a slot 10 with which co-operatesa headed pin 11 mounted on a driver or hell crank 12 which is pivoted in a slot 13 in the support 9, the drivers having a common fulcrum wire 14 carried by said support. Pivoted to the shorter arm of each bell crank or driver is the forward end of a link 15, said link at its rear. end being pivotally connected to an angular lever 16 fulcrumed at'17 on a sub-frame 18 detachably mounted within the base of the machine. which engages in a slot 20 in a key lever 21, the set of key levers being mounted on pivots 22 in the sub-frame.

The type bar segment 6, which in the pres ent instance is shiftable to change case, is detachably secured to a supporting frame or bracket member, best illustrated in Fig. 3 and designated as a whole by the reference numeral 23, said bracket member being ver- "tically arranged behind the type bar segment and curved to conform to the curve of the'segment. The'bracket 23 is channeled or cut out at its front side to partially house the heel portions of the type bars, and is Each lever 16 carries a pin 19 provided centrally at its rear with a downwardly curved arm 24. At its ends said bracket terminates in flattened portions or enlargements 25,.each enlargement having at its upper end a lug 26 and at its lower end an ear or. lug 27. Near its middle the bracket 23 has an upward extension or lug 23, this lug together with the lugs 26 being tapped to receive securing screws 28 which are also threaded into the segment 6', said screws detachably securing together the segment and the bracket or support 23. The lugs 27 have outer plain vertical faces which at their lower portions co-operate with fixed abutmerits or guidestops (not shown), and near their tops receive screw pins 29 on which are pivoted the forward ends of horizontal rearwardly extending links or arms 30. Said arms at their rear are provided with collars 31 which fit over and are pinned to the end portions of a rock shaft 32 which extends from side to side of the machine.

and is supported on pivot pins (not shown) projecting inward from the sides of the framesl. A third arm or link, not shown, but which is arranged centrally behind and at the lower side of the bracket co-operates with the arms 30 to guide and control the bracket and the segment 6 during case shifting operations. The case shiftingmechanism is preferably of the construction disclosed in the aforesaid application of Barr and Barney; and it will be understood that when the shift key (not shown) is actuated, the bracket 23 and segment 6 will be shifted downward together with the set of type bars 4, drivers 12 and support 8, 9, thus shifting the type bars from their uppermost position, where the lower case types will co-operate with the platen, to a lower position where the upper case types will so co-operate. The universal bar mechanism hereinafter to be described is mounted on the bracket 23 and participates in the case shifting movements thereof so that said mechanism is always maintained in the same normal relationship with the type bars by which it is actuated. Escapement devices are provided comprising a toothed escapement wheel 33suitably connected with the carriage which is constantly being impelled leftward by spring drum or carriage motor mechanism, not shown. (Jo-operative with the escapement wheel 33 are escapement dogs 34 and 35 mounted on a swinging dog rocker 36 which is pivoted on stationary arms 37. Said dog rocker is provided with a spring 38 anchored at one end to a stationary pin 39 and connected at its other end to a pin 40 secured to the dog rocker below its pivotal axis. The spring 38 tends constantly to swing the dog rocker forward and normally maintains it in the position shown in Fig. 1 through the co-operation of stop devices (not shown), the rear or stepping dog 34 being engaged at this time with the escapement wheel. The dog rocker carries a forwardly projecting screw pin or contact 41 which is adapted to transmit the movement of the type bar through the universal bar mechanism to the dog rocker. The escapement devices above briefly described are more fully disclosed in the pending application of 'John H. Barr, Serial No. 423,629 filed November 12, 1920, but it is to be understood that any other suitable escapement mechanism may be employed.

As has been stated, the dog rocker is adapted to be swung or vibrated backward and forward on its pivot when the printing keys are operated, movementfrom the printing keys and type bars being transmitted to the dog rocker through universal bar mechanism. Each type bar is rovided with a contact edge or face 42 for co-operation end portions of the universal bar. the middle portion of said universal bar, de-

with the front edge of a universal bar 43 comprised in said mechanism. The universal bar is preferably made of sheet metal and is arcuate in shape, being housed in a seat or depression 44 in the rear of the type bar segment 6 and connected at its end and middle portions with devices or arms pivoted on the bracket member 23. Near its ends the universal bar is provided with short rearward extensions or ears 45, preferably integral with the body of the bar and twisted or bent so that at their rear ends their faces are in vertical planes. Near its middle the universal bar 43 is provided with a long rearward extension or arm 46 having at one side a downwardly bent ear 47 formed with an open-mouthed slot indicated at 48. The ears 45 are perforated as indicated at 49, and loosely fitting in these perforations are pins 50 carried by crank arms 51, the pins being riveted or otherwise suitably secured to the upper ends of said crank arms and thus pivotally connecting the crank arms with the universal bar. The crank arms 51 are provided at their lower ends with hub portions 52 split as indicated at 53, the kerfs or cuts terminatingiin enlarged round openings which receive or fit over a rock shaft 54. Clamping screws 55 bridge the kerfs 53 and connect the split portions of the hub or collar 52, these screws when tightened clamping the crank arms 51 to the rock shaft 54. By loosening the screws relative adjustment between the crank arms 51 and the rock shaft 54 mav readily be effected. The ends of said rock shaft are formed with conical depressions to accommodate conical pivot devices 56 and 57 which extend inward through lugs 58. said lugs being integral with and projecting rearward from the bracket 23 near its ends. One of the conical pivot devices. as 56, may be a screw pivot while the other. 57, may be a plain pivot pin. The screw pivot 56 is threaded through its supporting lug 58 and its outer end receives a check nut 56* which co-operates with the outer face of the lug 58 to hold the screw pivot in adjusted position. The opposite pivot device or plain pivot pin 57 is held in adjusted position by a set screw 57 which is threaded down through the top of the associate lug 58 and engages with the upper side of the pivot pin 57 to hold it fixed in adjusted position.

The construction last above described provides for supporting and guiding the upper To guide vices are provided comprising a pin, 59 riveted or otherwise secured to the upper end of a crank arm 60 and projecting laterally therefrom into the slot 48 with the sides of which said pin is adapted to loosely engage (see Figs. 2 and 3). The crank arm 60 has a bearing portion or hub 61 from which it extends upward and with which is also rigidly connected a rearwardly extending crank arm 62, the parts 60, 61 and 62 constituting a bell crank member. The hub 61 is perforated to fit over and bear on a headed shoulder screw 63 which is threaded into the lefthand side of the bracket arm 24. Extending rearward from the rock shaft 54 at right angles to the pair of crank arms 51 is a crank arm 64 having a hub 65 which fits over the rock shaft 54 and is fixed thereto by a cross pin 66. The crank arm 64 is above the crank arm 62, and the two crank arms 64 and 62 are connected by a synchronizing link 67, said link being vertically arranged and pivoted at its upper end at 68 to the crank arm 64, the lower end of the link being pivotally connected at 69 with the crank arm 62. By this construction the pins 50 connected to the outer ends of the universal bar 43 are caused to move in unison with the pin 59connected to the middle portion of said universal bar so as to insure uniform motion of the universal bar 43 throughout its length. Fixed to the rear end of the arm 46 is an angular contact piece 70 having a vertical face that is adapted to engage with the contact or screw 41 to transmit movement from the universal bar 'to the dog rocker. Normally the contact 70 is slightly separated from the end of the screw 41 so that the universal bar will be in mot-ion when it picks up the dog rocker. The contact piece 70 is fixed to the arm 46 as by rivets 71 and 72. The rivet 72 may be in the form of a pin which extends upward from the arm 46 and is grooved near its top so as to receive the hook-like rear end of a coiled universal bar spring 73. Said spring is horizontally arranged and a plurality of its forward coils are wrapped around and suitably secured to a nut or adjustable anchorage 74, as will best be understood from Fig. 4. The nut 74 is threaded on a screw 75 having a head 76 which fits loosely in a depression 77 in the front wall of anoff-set or lug 23 projecting laterally from the lug The depression 77 is narrowed or contraded at the rear of said lug as indicated at 78 so that while the shank of the screw 7 5 may pass freely through said contracted portion the head of the screw cannot pass through. The under side of this head may be inclined to correspond with the bottom of the depression 77. The threaded portion of the screw is capable of play inall directions, as is the nut 74 mounted on said screw. The head 76 of the screw is formed with a nick to accommodate a screw driver which may be introduced through a hole 79 in the segment 6. and it will. be plain that by turning the screw on its longitudinal axis the nut may be caused to travel either forward or backward along said screw to increase or diminish the tension of the universal bar spring 73. Said spring constantly tends to pull the universal bar frame, comprising the universal bar proper 43 and the arm '46, forward towards the front of the machine and normally maintains the front edge of the universal bar in contact with the vertical wall of the depression 44. Preferably the lower front corner of the universal bar is rounded as indicated at 43 to provide a' suitable surface with which the contact edges 42 of the type ba s may co-operate.

'When a printing key lever 21 is actua' .d, its movement will betransmitted thrt gh the connecting train of devices to its type bar 4 which will be swung to the platen to print. During the printing movement of the typebar its contact edge 42 will engage with the front curved end 43 of the universal bar and will move the universal bar rear-.

ward in opposition to the spring 73 causing the contact 70 to act against the contact screw 41 to swing the dog rocker 36 rearward, carrying the stepping dog 34 out of the escapement wheel 33 and bringing the holding dog 35 into co-operativeengagement therewith. As the type bar swings back from printing position the universal bar will moveforward under the impulse of its spring 73 and the dog rocker will swing forward completing its vibratory movement and affording a letter space advance movement of the carriage through the co-operation of the stepping dog with the succeeding tooth of the escapement wheel. The universal bar during its rearward and return movements will move in substantially a straight path, being supported from the rock shaft 54 by the crank arms 51 and guided by said crank arms. as well as by the crank arm 60 with which the universal bar frame has near its middle a pin and slot connection 48, 59.

The universal bar mechanism comprising the universal bar 43, its arm 46 and the sup porting and guiding devices including the rock shaft 54, crank arms 51, bell crank 60, 61, 62, crank arm 64 and synchronizing link 67 shift up and down during case shifting movements of the type bar segment and the bracket 23, although the advantages of the invention are not of course limited to case shifting constructions. Moreover. said universal bar parts and the bracket 23 on which they are mounted constitute what may be called a unit. the entire universal bar structure being detachable along with the bracket 23, as will no doubt be plain from the in spection of Fig. 3. This unitary feature of construction is of a considerable advantage since it enables the entire universal bar mechansm to be assembled in place on its support and accurately adjusted before being put into the machine. The construction in itself. furthermore. facilitates accuracy of adjustment, since after the parts are assembled and before the screws are tightened, the

unitary structure may be applied to a faceplate so that the front edge of the universal ar 13 may be brought into contact throughout its length with saidface-plate and while held in this position the screws 55 may be tightened, thus insuring the maintenance of the universal bar in its trued-up condition with the result that perfect timing will be had in the actuation of said universal bar from each and all of the type bars.

Various changes may be made without departing from my invention.

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

1. In universal bar mechanism for writing machines, the combination of a curved universal bar; and means for supporting said universal bar comprising a rock shaft, a pair of crank arms mounted on said rock shaft and pivotally connected with said universal bar near its ends, a bell crank having one arm loosely connected with said universal bar near its middle, a link pivotally connected to the other arm of said bell crank, and a crank arm fixed to said rock shaft between the first recited pair of crank arms and pivotally connected to said link.

2. In universal bar mechanism for typewriting machines, the combination of a curved universal bar provided near its ends with ears, a rock shaft, a pair of crank arms adjustably mounted on said rock shaft and pivotally connected to said ears, a third crank arm fixed to said rock shaft between said pair of crank arms and extending at right angles thereto, a bell crank oneof whose arms has a loose pin and slot connection with said universal bar, and a synchro; nizing link pivotally connected with the other arm of said bell crank and also with said third crank arm.

3. In a typewriting machine. the combination of a curved universal bar provided with a rearward extension, a rock shaft, crank arms on said rock shaft and pivotally connected with said universal bar near its ends,

a bell crank having one of its arms loosely connected to said extension, a link connected to the other arm of said bell crank, a third crank arm on said rock shaft pivotally connected to said link, and a pivoted dog rocker operative by said extension.

4. In a typewriting machine, the combination of a curved universal bar provided with a straight extension, a rock shaft, crank arms on said rock shaft and pivotally connected with said universal bar near its ends, a bell crank having one of its arms connected to said extensiom a link connected to the other arm of said bell crank, a third crank arm on said rock shaft pivotally connected to said link, a pivoted dog rocker, a dog rocker spring, and a universal bar spring connected to said extension, said extension being operative against said dog rocker to overcome the dog rocker spring.

5. In a typewriting machine, the combination of printing keys, type bars connected to said printing keys and provided with con tact faces, a curved universal bar having a straight extension, said universal bar being actuated by the contact faces of said type bars, a rock shaft, crank arms on said rock shaft and pivotally connected with said universal bar-near its ends, a bell crank having one of its arms connected to said extension. a link connected to the other arm of said bell crank, a third crank arm on said rock shaft pivotally connected to said link, a pivoted dog rocker, a dog rocker spring. and a universal bar spring connected to said extension. said extension acting against said dog rocker to overcome the dog rocker spring.

6. In a typewriting machine. the combination of a type bar segment; key actuated type bars on said segment; a bracket member detachably connected to said segment; a rock shaft on said bracket member; crank arms on said rock shaft: a curved universal bar operative by said type bars, said universal bar being pivotally connected to said crank arms; a third crank arm on said rock shaft; a bell crank pivoted on said bracket member and connected to said universal bar: a link connecting said bell crank with said third crank arm; and escapement devices comprising an escapement rack, escapement dogs. and a dog rocker carrying said dogs and directly operative by said universal bar.

7. In a typewriting machine provided with escapement mechanism, the combination of a type bar segment: a bracket member detachably connected to said segment: a universal bar mechanism mounted wholly on said bracket member and detachable. with said bracket member as a unitary structure. said universal bar mechanism comprising a curved universal bar, a rock shaft pivotally supported on said bracket member. crank arms on said rock shaft pivotally connected to said universal bar, a bell crank pivoted on said bracket member and connected to said universal bar, and connections between said bell crank and said rock shaft comprising a synchronizing link, said universal bar being prm'ided with an extension for actuating the escapement mechanism of the machine.

8. In a typewriting machine provided with escapement devices, the combination of a shiftable type bar segment: type bars on said segment; a bracket member; screws detachably securing said bracket member and said segment together: and universal bar mechanism mounted wholly on said bracket member and detachable with said bracket member as a unitary structure, said univen sal bar mechanism comprising a curved universal bar operative by said type bars and provided with an extension for direct contact with certain of the escapement devices, a pair of crank arms mounted on said bracket member and pivotally connected with said universal bar near its ends, acrank arm mountedon said bracket member independently of said pair of crank arms and connected to said extension, and synchronizing connections between said last mentioned crank arm and said pair of crank arms.

9. 1n universal bar mechanism for typewriting machines, the combination of a support, a curved universal bar thereon, said universal bar being type bar operated and and State of New York this 30th day of 25 November, A. D. 1920.

EDlVIN E. BARNEY. \Vitnesses:

CHARLES E. SMITH,

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