US897533A - Type-writing machine. - Google Patents

Description

No. 897,533. PATENTBD SEPT. 1, 1908.

E. B. HESS.

TYPE WRITING MACHINE.

PPLIGATION FILED JULY 24 o A 19 7 2 SHEETS-SHEET 1.

' I Man 5%. fi fiik 54M film i ATTORNEY No. 897,533. I PATENTED SEPT. 1, 1908.

E. B. HESS.

TYPE WRITING MACHINE.

APPLICATION, IF-ILEI) JULY 24, 1907.

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UNITED STATES PATENT QFFICE.

EDWARD B. nnss, or NEW YORK, NTASSTEEOR ROYAL 'rrrsvvmrsr. COMPANY, OF

HOBOKEN, NEW JERSEY, A CORPORATION or NEW JERSEY. I

TYPE-WRITIN G MACHINE.

Specification of Letters Patent.

Patented Sept. 1, 1908.

To all whom it may concern:

Be it known that I, EDWARD B. lines, a citizen of the United States, residing in the borough of Brooklyn, city and State of New York, have invented certain Improvements in Type-VVriting Machines, of which the following is a specification.

This invention comprises a novel organization, hereinafter described, for projecting lo the ribbon vibrator of a visible writing machine variable distances to effect printing from one zone or another of a ribbon having a plurality of zones of different character or co or.

In the accompanying drawing; Figure 1 is a vertical longitudinal sectional view showing so much of a front strike machine as is desirable to illustrate this invention: and Figs. 2 3 and 4 are detail views showing the parts 2c in different positions.

As indicated printing is to be effected from %Yper and lower case by shifting the platen. 1e invention is however applicable to machines in which the type bar basket or segment is shifted.

a is the universal bar carried in arms pro-- jectin from the rock shaft 3). Rocking with shaft Z is a vertically disposed arm to which is connected the universal bar spring 0 that '30 normally draws the vertical arm 0 against its back stop 0 To the upper end of the arm 0 is attached a coiled spring (1 whose rear end is attached to the short downwardly extending arm of a bell crank lever e pivoted at e on a downward extension from the shift rail f of the carriage. The s ring d acts as an extensible link for operating the bell crank lever whose longer forwardly extending arm is attached to the vertical movable ribbon projection from the be crank lever in rear of its pivot tends by its reaction to normally hold the ribbon vibrator down. When a finger piece is depressed and the universal bar carried down the spring link (1 elevates the vibrator and carries the ribbon to the printing point. If the .movement of lever e be limited by suitable stop devices, the spring link (Z will yield to permit full depresslon of the universal bar toeffect actuation of the escapement of the machine. To (letermine the extent of upward movement of the ribbon vibrator there is employed a stop device which may conveniently be made in 5 the form indicated ;that is to say, there is A. coiled spring 6 applied to a a rotatable shaft or sleeve h mounted to turn.

in the downward cxtensionf from the shift rail of the carriage. It may be rotated by the operator in any convenient way, as by a head at the side of the machine. This rota- (30 table part 7). has three surfaces of different radius marked 1, 2, 3. When the long arm of the bell crank lever c is arrested by surf ace 2, a limited upward movement isimparted to the ribbon vibrator to effect printing from 5 the top zone of a double zone ribbon. If the part it be adjusted so that the lever is limited 1n its upward movement by surface 1, then the ribbon vibrator will rise higher and printing will be effected. from the lower zone of the ribbon. If, however, surface 3 is caused to arrest movement of the lever e, the ribbon vibrator will not rise and stencil work may then be done. 1

The drawing indicates a key lever machine. The particular arrangement of the vertically disposed arm 0 rocking with the universal bar and exerting strain in substantially a horizontal line combined with the form and arrangement of the bell crank lever c has 30 been found byexpericncc to be an eflicient and practical organization for the purpose described.

I am aware that, broadly, it is old to operate a ribbon vibrator by an extensible or 5 yielding connection and to limit the extent of movement of the vibrator by variable stop devices.

I claim:

1. In avisible writing machine, a univer- 9o sal bar, means for depressing it on operation of a finger piece, a vertically disposed arm rocking with the universal bar, a spring link applied to its upper end, a bell crank lever to Whose short downwardly extending arm the rear end of the spring link is connected and a ribbon vibrator connected with the longer forwardly extending arm of the bell crank lever in combination with adjustable variable stop devices to determine the extent of movement of the ribbon vibrator.

2. In a visible writing machine, a universal bar, means for depressing it on operation of a finger piece, a vertically disposed arm rocking. with the universal bar, a spring link applied to its upper end, a bell crank lever to whose short ownwardly extending arm the rear end of the spring link is connected and a ribbon vibrator connected with the longer forwardly extending arm of the bell crank lever in combination with an ad ustable rotatable stop device adapted to arrest the movement of the bell crank lever and having stop surfaces of unequal radius.

3. In a visible writing machine, a carriage shift rail, a bell-crank lever pivoted thereon, a riblmn-vibrator with which the forwardl extending arm of the bell-crank is connecterfi a horizol'itally disposed extensible spring link connected at one end to theshort downwardly extending arm of the bellcrank, a part movable longitudinally of the machine to l I l which the other end of the spring link is connected, means for moving sald part when the finger pieces of the machine are depressed and adjustable variable stop. determine the extent of movement of the ribbon vibrator. v I

In testimony whereof, I have hereunto. subscribed my name.

EDWARD B. HESS. Witnesses:

JOHN M. LEE,

L. F. BROWNING.

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