US938350A - Type-writing machine. - Google Patents

Description

F. J. TANNER & I. E. JONES.

TYPE WRITING MACHINE.

APPLICATION FILED JULY 17, 190s.

938,350. Patented (m2631909.

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FRAN K J. TAN N ER AND IWAN E. JONES, 0F SCRANTON., PENNSYLVANIA., ASSIGNORS T0 INTERNATIONAL TEXT uBOOK COMPANY, 0F SCRANTON, PENNSYLVANIA, A CORPO- RATION GF PENNSYLVANIA.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patent-ed oet. 26, 1909.

Application filed July 17, 1908. Serial No. 444,050.

l fo alt whom it may concern:

tuting a universal bar. from the tube 9 throughout its length, as in- 4, and its ends arel Be it known that We, FRANK J. TANNER and IWAN E. Jonas, citizens of the United and residents of Scranton, Lacka- States, y wanna county, State of Pennsylvania, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.v

The present invention comprises improvements in typewriting machines and it relates particularly to an improved universal bar and connections for voperating the escape- .ment and any other pafts whichare requiredto be moved at each operation of the key levers.

The invention will be des'c'ribedinl connec.

tion with the accompanying drawing in which, I

Figure 1 is a sectional view ofva typewriting machine taken on the vertical plane `from front to rear and showing'only such parts .as are necessary'to an understanding of the present invention; Fig. 2 is a partial section on the line 2 of Fig. l; Fig. 3 is anenlargement of a part of Fig. 2, showing the bearing in section; Fig. 4 is'an enlargement of part of Fig. 1. 4

Referring to the drawing, l indicates. the

frame of a typewriting machine, 2 theplaten, 3 the type bar support, 4 a type bar, 5' a link connecting the pivotal end of the type bar with the upper end of a sub-lever 6 and 7 a key lever which is operatively connected with the sub-lever at 8. l

The key levers 7 are mounted upon a stationary' tube 9 having circular. recesses in their lower edges which conforml to the upper part of saidk tube and bar thereon. Within the tube 9 is a rock shaft 10 consti- This shaft is free dicated in Figs. 3 and preferably supported in ball bearings 1l of suitable construction so that the shaft may rock freely. The shaft 10.is provided with a longitudinal groove or slot l2 and the tube 9 has a series of transverse slots or openings 13 which are longerthan the width of the slot l2 and overlie said slot.- Each of the key levers has a tooth 14 which passes through the corresponding slot 13 in the tube 9 and into the longitudinal slot or opening 12 iu the universal roi-k shaft l0. The normal position of the rock shaft and the key levers is shown in IFigs. 1 and 4 in which .the teeth of the key levers rest upon or against the front or lower side wall of the ,slot l2 and stand somewhat above the lower ends of the slots'13. It will be evident that when any key lever is rocked by-depressing its` forward end it will turn about the tube 9 and its tooth will` enga el and turn the universal rock shaft 10. n releasingl the key lever the rock shaft will .be turned to its normal position -by a spring suitably located.' As shown, two arms 15 are rigidly connected tothe rock shaft and a spring 16 normally holds one of the arms against a stop 17. It will be understood thatthe spring for restoring the rock4 shaft to normal position may be connected to any part which is connected with the rock shaft and that the stop may be applied to any suc-h part.

In the drawing y,we have shown an escapement 18, the pawls of which are carried by a rocker 19 connected with an arm 15 of the universalbar by means of a link 20, arm 2l, rock shaft 22, arm 23, and link 24. It will be understood that any other part which is required to be moved bytheuniversal be connected to manner.

versal rock shaft 10 is considerably wider than the teeth 14 of the key levers. These parts are so proportioned that when the shaft is rocked by any one of the keys lit will not move or affect the other keys. `The movement of the rock shaft will, of course, be very slight on account of being co-axial with the fulcrum of the key levers. The key levers of course turn about the same axis as the rock shaft.

Having described our invention what we claim and desire to secure by Letters-Patent is,

l. In a typewriting machine, the combination with the key levers and with a fixed fulcruinfor said key levers, of a universal vrock shaft coaxial with the fulcrum of the key levers, means connected with each of thekey leversfor rocking said shaft, and an escapement mechanisrnoperated by said shaft.y

2. In a typewriting machine, thc combination with a' series of key levers, of a fulcrum l for said key levers, a universal rock shaft,

rock shaft, such as a ribbon vibrator, mayA .the shaft in any suitable It will be noted that' the slot 12 in theiuni 'concentric with said fulcrum, a tooth or projection on each keg lever arranged to engage and rock said sha whenl the key' lever is operated, and an escapement mechanism operated by said shaft.

3. In a typewritingmachine, the/combination with a series of ey levers, of a tubular fulcrum for said -key levers, and a universal rock shaft co-axial with said fulcrum, each of the said key levers being adapted to ,rock

'said shaft when operated.

4. In a typewriting'machine, the combination of a fixed fulorum bar, a rock shaft coaxial with said bar, a lon 'tudinal slot in said rock shaft, and a series of key levers fulcrumed on the bar and having teeth engaginIg the slot in said shaft.

5. n a typewriting machine, the combinal tio'n of a fixed fulcrum bar having transverse slotstherein, a rock shaft co-axial with said bar and a series of key levers mounted on said fulcrum bar and havin teeth or projections extending through t e slots therein and engaging the rock shaft.

6. In a typewriting machine,lthe combination of a tubular fulcrum bar, a series of key.

levers each having a segmental recess in its lower edgeadapted to receive said bar, a rock bar, a rock shaft co-axial with the bar, and teeth or projections onthe key levers extending through the fulcrum bar and into f engagement with the rock shaft.

7. In a typewriting machine, the combination with the escapement, of a universal rock shaft, connections between said universal rock shaft and escapement, a series of key levers arranged to rock about the axis of said rock shaft, and teeth or projections extending from said key levers into engagement

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