US879123A - Type-bar mechanism for type-writers. - Google Patents

Description

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a, SMITH. TYPBBAR MECHANISM ma .TYPE WRITERS.

AEPLIUATION FILED 13110.17. 1906.

I WITNESSES PATENTED FEB, 11, 1908.

UNITED STATES PATENT OFFICE.

GEORGE A. SMITBQ OF NEW YORK, N. Y., ASSIGNOR'OF SIXTEEN ONE-HUNDRED-AND-FOURTHS T0 JAMES W. HEN-NESSEY, OF NEW YORK, N. Y., FORTY-SI." ONE-HUNDRED-AND-FOUR'ITHS TO ARTHUR LETTS, OF LOS ANGELES, CALIFORNIA, AND 'lWENTY-0NE ONE-HUNDRED- A'ND-FOURTHS TO FREDERICK H. WARD, OF BROOKLYN, NEW YORK.

TYi-E-BAR MECHANISM FOR TYPE-WRITERS.

No. scarce.

Specification of Letters Patent.

Application filed December 17. 1906A Serial No. 348.297.

Patented Feb. 11, 1908 To all whom it concern;

. Be it known that l, GEORGE A. SMITH, a

- citizen of theUm'ted States of America, and

resident of the city, county, and State of New York, have invented certain new and useful Improvements in Type-"Bar Mechanism for .l.ypc--Writers, of which the following is-a specification. This invention relates to typewriting machines, and by means 0 which the printing stroke" is given to the type-hare of the r'inger levers.

The object of the invention is to provide a connection between the finger-lever and through the actuation type-her which. embodies-a minimum numv her of parts and which insuresthe proper printing movement of the type-bar when the finger-lover is subjected to but little pres sure.

l l i'th this end in view the invention 0on5" in the novel features o1. (JODS'DI'HCUQIL and combinations of parts to be hereinafter described. and finally recited in the claims.

in the accompanying drawings, 111 which the some parts are denoted by the same rel-' erence characters in both figures, Figure 1 is a vertical longitudinal section of a typcwriting machine constructed in accordance with the invention, showing the parts in position of rest, and Fig. 2 is a detail elevation of the type-bar and its actuating mechanism, showing the parts in printing position.

In the drawings 1 denotes the frame of the machine, which is of the usual construction.

The invention resides in the connection between the fingerdcvers and the type-bars, and hence it will only be necessary to describe one such 'onnection.

2 denotes one of the finger-levers which is pivoted at its rear end within the lower part of the frame l, as indicated at 3. per portion of the frame there is rovideda vertical plate. 4 having vertica kcrfs in which the type-bars are pivoted.

In thedrawing 5 indicates one of the type- I bars which is pivoted. to the plate 4 by means particularly to the 1nechanism At the .up-

Extending transversely of the machine at its lower portion, beneath the pivots of the typebars and above the fingerlevers, is a rod 7 upon which are pivoted a number of angle-levers by means of which connection is made between the fingenlevers and typebars. I r

8 denotes one of 'these angle-levers Said lever is formed with a relatively long upwardly-extending arm or branch, and a short forwardly-extol:ding arm having a longitudinal slot 11 therein, the lever being pivoted at the junction of these arms, as

shown. The fingerdever 2 is provided intermediately of its len th witi a laterallyextending pin-12 whic enters the slot 11 of the'angle' ever 8. The upper end of the angledevcr 8 is considerably enlarged and .provrdedwdh a curved nose 13. At the orward edge of said nose there is provided a recess 14 and at the rear edge thereof there.

is a somewhat similar recess 15 having its rear wall formed by lug 16. The .end of this claw or lug is dirooted towardthe front of the machine. When the parts are in their normal position,

shown in B ig'. .1, the recess-14 atthe forward a claw or hook-shaped edge of theangleelewer forms a seat 101" a pin 17 which extends laterally from the enlarged butt-end 5 of the typedever,approximately below the pivot 6. In this position the upper edge of the nose 13 is en aged by a second pin 18 extending from'tlie cnlarge ment 5 of the type-bar at the rear of and slightly below the pivot.

The type-bars are preferably arranged to rest at their forward ends on a lodge-19 extending inwardly from the front-plate of the frame.

The 0 eration of the improved mechanism is as fol ows: The depressing of the finger- .lever causes the forward arm of the anglelever to be moved downwardly through its -slotted connection with. said finger-lever and the upper arm of said angle-lever is thus moved forwardly on its pivot. This movcment of the angle-lever causes the seat 14 to he disengaged by the pin 17 whereupon said pin rides along the upper edge of the nose 13, thus giving the type-bar a slight upward impetus until the pin 18 thereon is caught by the forwardl and downwardly moving c aw 16 and pul ed down, as shown in Fig. 2, so, that the type-bar is pivotally moved into printing position. The movement of the type-bar is almost instantaneous inger-lever the and said bar is given a reliable and effective printing stroke.

arts are immediately returned to their initial position by means of a spring acting in the usual manner upon the finger-lever.

he pins which move in contact with cer tain parts of the device, as hereinabove explained, may, if desired, be provided with small rollers or roller bearings carried thereon as on studs for theurpose of diminishing the friction, and enabling the parts to work more easily and without wear.

Having thus described my invention I claim:

1. In a typewriter, the combination of a finger-lever,- a pivoted angle-lever directly connected thereto and movable thereby, said angle-lever having its upper end formed t with a nose and with a claw. at the rear of the nose and with a recess at the front of the nose, a ivoted type-bar having a pin pro-' and a second )in below said pivot, a pivoted angle-lever s iaped at its upper end with Upon the release of the' .to engage the said two projecting ins, and a finger-lever operatively connecte withthe lower end of said angle-lever.

3. In a typewriter, the combination of a pivoted type-bar having an enlargement at its pivoted end, pins formed on said enlar e ment, a lever formed with a nose and Witfi a claw at the rearof said nose to engage one of the pins and thereby pivot/ally move said type-bar and being formed also at the front of the nose with a recess to serve at times as a seat for the second pin, and means for actuating said lever.

4. In a typewriter, the combination ofva ivoted type-bar having a pin extending aterally therefrom at the rear of its pivot and a second pin below said pivot, of a pivoted angle-lever having its upper end formed with a nose and with a claw at the rear of said nose to engage said first-named pin and thereby pivotally move said type-bar, there being at the front of said nose a recess which serves as a seat for said second pin when the type-bar is in position of rest, and a finger-lever operatively connected with the lower end of said angle-lever.

Signed at New December, 1906.

York this 13th day of Witnesses: a

JOHN H. HAznLToN, O. B. Sonnosnmn.

' GEORGE A. SMITH.

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