US1404202A - Typewriting machine - Google Patents

Description

E. L. HARMON.

TYPEWRITING MACHINE.

APPLICATION FILED JULY23. 1919.

Patented J an. 24, 1922.

' 3mm: Mtoz wanna I I have illustrated my present ln'vention as "applied to a machine the Corona type, n which an upright bail 5, plvoted at 6, 1s

EDWIN L. HARMON, OF GROTON, NEW YORK, ASSIGNOR TO "COMPANY, INC., O15 GROTON, 'NEW YORK, A

CORONA TYPEWRITER CORPORATION OF NEW YORK.

TYPEWRITING MACHINE.

Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed July 23, 1919. Serial No. 312,805.

T0 allwhmn 2'2: may concern:

'Be'it known that I, Enwm L. HARiroN, a citizen of the United States of America, and a resident of Groton, county of Tompkins, and State of New York, have invented certain new and useful Improvements in Typewriting 'Machines, of which the following is a full and clear specification.

The object of this invention is to provide a 'universal-bar action'adapted especially to maintaining the usual key-leverstroke, as more fully hereinafter set forth.

In the drawings- Fig. 1 is a vertical longitudinal sectional view showing'so much of a typewriting machine as is necessary to show my present invention;

Fig. 2 is a similar view showing the parts in another position;

F ig. 3 is a detail perspective view showing the parts hereinafter described; and Figs. 4 and 5 fragmentary sectional views taken on the line 55 of Fig. 1 showing the spacing lever stop lug twisted into difierent swung rearwardly at its upper end to impart to the escapement a carriage-feed-operation. Each of the two uprlghtarms of the bail 1s provided with aforwardly-and-downwardlyextendingarm 7 provided with a lateral lug "orpin 8at itslo'we'r extremity. Embracing each of the pins 8 is a fork 9 formed on the rear end of theadjacent side-arm 10 of the universal-bar-frame, 'SEllCl frame consisting "of'said arms 10 and two transverse connect near saidpivotal point and'the bar 11 being "located attheforwardextremities of the arms 10.

It will be'seen'that depression of the forperend' of the bailbackward to give the carriage-feed an operation.

: "key-lever 1 1, which is pivoted atits rear end irithe fulcrum-bar 15; coo'perates'with the front bar 11- ,the 'key lever being provided With a forwardly-extending finger 1.6 which The usual letternormally bears upon'the upper face of said bar 11. 'lhespace-bar-levers 17 are pivoted at their rear ends to the same fulcrum-bar l5 and are provided with arms or fingers 18, similar to the fingers 16 carried by the keylevers but turned in the opposite direction, namely, rearwardly, so as to bear upon the upper face of the rear bar 12 of the universal-frame. It will be seen, therefore, that whether the universal-frame be actuated by shorten the movement of the spacebar while duced because of the fact that the operating finger 18 engages the universal-frame much nearer to its pivotal point 13' than is the case with the fingers 16 of the key-levers. In other-words, the letter-key-levers and the space-barim )art to the bail. 5 (through the Inediumof t e universal-frame and its connections) the same movement; but in the case of the space-key'a shorter stroke will be sufficient to impart said'movernent. Of course, the power required to operate the universalframe through the medium of the spacinglevers will be somewhat greater than that required to operate it through the "medium of the key-levers, but this increased'eifort will be so slight that it will be negligible.

To limit the up-anchdown movement of the spacing-levers 17, I provide each with an integral forwardlyextending finger 19 which vibrates between a bottom flange 20 of the frame and overhanging flange 21 formedintegral with the front upper edge of the frame, and to cushion the blows of the finger19 against these flanges 20 and 21 I slip upon the finger19 .a tubular rubber sleeve 22. The finger 19 is arranged horizontally fiat-wise, it being twisted to bring 'it to this position; and to vary the throw of the space-barit is simply necessary to twist the finger rotatively,"as shown in Fig. 5.

It will be understood that it is'not essential that the universal-frame structure shall consist of two separated bars 11 and 12, since it is obvious that these bars may be made integral, the essential requirement being simply that thespacing-leverfingers 18 shall engage the universal-frame at points nearer to the pivot 18 than the points engaged by thefingers of the writing levers.

tending fore and aft of the machine, type-' actuating levers operable by the character keys and extending fore and aft of the machine, and a universal rocking frame operable by all of said levers for actuating an escapement, said spacing levers and the type-actuating levers engaging over the frame forward of their fulorums andat the same side of the fulcrum of the frame, and the spacing levers engaging the frame a shorter distance from their fulcrums and closer to the fulcrum of the frame than the type-actuating levers.

2. In a typewriting machine, the combination with a universal-bar-frame, pivotally supported and embodying side-arms together with a pair of transverse arms one being arranged nearer the pivotal point than the other, of letter-key-levers arranged to cooperate with the bar farthest from the pivotal point, and spacing-levers adapted to coope ate with the other bar, for the purpose set forth.

3. In a typewriting machine, the combination of character keys, a space bar,

spacing levers operable by the space bar,

type-actuating levers operable by the character keys, pivotally supported universal bar mechanism, projectionson all of said. levers adapted to engage said mechanism,

the )ro'ections on the s acin levers bein b '3 so located as to exert pressure on said mechanism closer to its pivotal point than the projections on the key levers, and means pivotally supporting the spacing and type-aetuat ing levers equal distances from the pivotal point of the universal bar mechanism.

1-. In a typewriting machine, a pivoted bail for actuating the eseapement, the arms of this bail being providead with forwardlyand-downwardly-extending arms each carrying a lateral pivot, a universal-bar-frame provided at its rear ends with forks adapted to embrace saidpivots, and key-lever means for operating said frame. 7

5. In a typewriting machine, the combination of character keys, a space bar, spacing levers operable by the space bar, typeact'uating levers operable by thecharacter keys, a unlversal rocking device underlying I all the levers, means'for pivotally support- ,ll'lg the spaclng and type-actuatmg levers at transversely aligned points, means for supporting the universal-device to rock up and down about an axis, extending transversely of the machine, the spacing levers being adapted, to exert pressure on said device closer to its fulcrum than the type-actuatin g levers, and means for limiting the throw of the spacing levers to less than the throw of the type-actuating levers.

6. In a typewriting machine, the combination-of character keys, a space'bar, spacing levers operable by the space bar, typeactuating levers operable by the character keys, pivotally supported universal bar mechanism, projections on all of said levers adapted to engage said mechanism, the projections on the spacing levers being so located as to exert pressure on said mechanism closer to its pivotal point than the projections on the key levers, means pivotally sup porting the spacing and type-actuating levers equal distances from. the pivotal point of the universal bar mechanism, and means for limiting the downward movementof the space bar to less than the downward movement of the character keys.

7. In a typewriting machine the combination 'of character keys, a space bar, spacing levers operable by. the space bar, typeactuating levers operable by the character keys, a universal rocking device underlying all the levers, the spacing levers being adapted to exert pressure on said device closer to its fulcrum than thetype-actuating levers, stops carried by the spacing levers ex tending forwardly of the space bar, and vertically spaced abutments on the machine frame cooperating with said stops to restrict the throw of the space bar to less than the throw of the character keys. j

' 8. In a typewriting machine, the combination of a main frame having vertically spaced flanges extending inwardly from the front cross-bar thereof, a pair of sheet metal levers extending fore and aft of the frame and fulcrumed therein, a space-bar supported on theforward ends of said levers, and integral bendable-stop lugs on the forward ends of the levers, the lug on each lever extending forwardly between the flanges on the frame and cooperating therewith to limit the upward and downward movements of the space bar. I I

9. In a typewriting machine, the combination of an upstanding escapement-actuating member, means pivotally supporting said member to rock fore and aft of the machine, a universal Jkey-actuated rocking frame, means pivotally supportingsaid frame to rock up and down about an axis extending transversely of themachine in front of said member, and means forming a slidingnndplvotal connectlon between the upstanding member and the rocking frame at the rear of the pivotal axis of said frame and forward of the pivotal axis of said member.

10. In a typewriting machine, the combilevers extending fore and aft of the machine and supporting said bar forward of their pivots, means pivotally supporting the levers intermediate their ends to rock up and down, key-operated levers foroperating type bars adapted to move the universal bar downward when the keys are depressed, arms extending forwardly fromthe side portions of said bail, and means forming sliding and pivotal connections between the rear end of said levers'and the forward ends of said arms.

11. In a typewriting machine, the combination of an upstanding escapement-operating member, means pivotally supporting said member to swing fore and aft of the machine, arms held to said member and extending forwardly therefrom, a universal bar, and levers pivotally supported intermediate their ends to rock up and down, said levers being connected with said bar forward of their pivots and loosely engaging said arms at the rear of their pivots for rocking the escapement-operating member.

12. In a typewriting machine, the combination of a rocking escapement-actuating frame, a universal key-actuated frame, means pivotally supporting the frames substantially at right angles to each other to rock about horizontal axes extending transversely of the machine, and a direct pinand-slot connection between said frames for rocking the escapement-actuating frame through the medium of the universal keyactuated frame. 7

13. In a typewriting machine, the combination of an upstanding invertedU-shaped escapement-operating bail, means pivotally supporting the side portions of the bail adjacent their lower ends to swing fore and aft of the machine, forwardly extending arms on the side portions of the bail, a pair of levers connected at their rear ends with said arms, means pivotally supporting said levers intermediate their ends to rock up and down, a space bar, spacing levers operable by the space bar, character keys,typebar actuating levers operable by the character keys, and a pair of transverse bars supported by the vertically rocking levers different distances in front of their pivots, said spacing levers being arranged to engage the rear one of said bars and the type-bar actuating levers being arranged to engage the other of said bars.

14:- In atypewriting machine, the combination of a rocking escapement-actuating member, a rocking universal member, means pivotally supporting said members substan tially at right angles to each other, said universal member directly engaging the escape ment actuating member for rocking the latter member, a space bar, character keys, levers operable by the space bar for exerting pressure on the universal member close to the pivotal axis thereof, and key-levers operable by the character keys adapted to press against the universal member at points farther from the pivotal axis of said member than the space-bar-operated levers.

15.7 In a typewriting machine, the combination of a pivotally supported upstanding escapement-operating bail, a universal bar, forwardly extending arms on the side members of the bail, rearwardly extending rock arms held to the universal bar, and means for pivotally connecting the rear ends of said rock arms with the forward ends of the arms on the bail.

I This specification signed this 14th day of July A. D. 1919.

EDWIN L. HARMON.

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