US1208154A - Line-space device for writing-machines. - Google Patents

Description

E B. HESS.

LINE SPACE DEVICE FOR WRITING MACHINES.

APPLICATION FILED SEPT- 24, m4.

lPatente'd Dec. 12, .1916.

WITNESSES Ill/VE/VTOH @wmm EDWARD IE. HESS, OF BROOKLYN, NEW

YORK, ASSIGNOR TO ROYAL TYPEWRITER COMPANY, THU, 01? NEW YORK, N. Y., A CORPORATION OF NEW YORK.

nine-senor nnvrcn r on WRITING-MACHINES.

- Patented not... fa, tare.

Application filed September 24, 1914. Serial No. 863,264. 1

To alluikom it may concern Be it known that I, EDWARD B. Hess, a

' citizen of the United States of America, re-

siding in the borough of Brooklyn, in the city of NewYork, county of Kings, and State of New York, have invented a new and useful Line-Space Device for VVriting-Maohines, of which the following is a specification.

This inventionrelates to the line spacing devices of type-writing machines and consists particularly in certain improvements of the device shown in my U. S. Patent No. 856,869 of June 11, 1907.

Tn the accompanying drawings: Figure 1 is a plan view of the left hand end of the carriage frame equipped with the line space devices of this invention; Fig. 2. an elevation of the same looking toward the left;

and the link 13, connected by its forwardend to the forward end of the short arm of the lever S and by its rear end to the pawl carrying arm of the ratchet feed, acts under compression in causing the platen to rotate. The arm 14, with which the link 13 conneots, has a rocking bearing coaxial with the platen shaft 12 on a sleeve 15 which extends through the body of the frame 11 and through a downwardly bent extension 16 of the bracket 10 of the frame. A nut 17 fitting enclwise between the body of the frame and its part 16 screws on the sleeve 15 and holds it firmly in position by a shoulder on the sleeve seating against the inside of the frame. This sleeve, as will be seen by Fig. 6, affords a long bearing for the platen shaft 12.

l8 designates the ratchet wheel which connects with the platen by a clutch. l9 designates the pawl pivoted to the arm 14, 20 the pawl spring, and 21 the ratchet shield a. detached sectional View and line space controller fitted to rock on the sleeve 15.

A spring 22 is provided for moving the lever 8 back into inactive position, being connected to a. short lug ascrew 24 on the frame. The spring is located in a tubular shield 25, shown in section at Fig. 1 andin perspective at Fig. 4. It is rigidly held by the screw 24 passing through a flattened portion at its end and by a pin 26. The'rearward movement of lever 8, under action of spring '22, is arrested by a stop 27 against which its short arm strikes, said stop being a projection from the stop plate 28 secured by screws to the extension 10 of the frame 11, as shown at Figs. 1 and 2. A forward stop is also provided for the screw bolt having an eccentric head 29 located on the part 10 of. the frame and adapted to be set to stop the lever'coincidentally with the contacing of the pawl 19 with the usual stop 30.. The eccentric 29 also provides for the varying movement of the lever 8 due to the use of r'athets of varying number of teeth.

The platen is set back for writing exponents or superior characters through the medium of the ratchet wheel detent locking roller and its spring 31, said spring being carried on a bracket 32 on the side of the operating lever 33 mediate its pivotal end 34: and its operating knob or handle The spring 31 is normally under tension with the side of the lever 33 resting against a pin 36, and the arrangement is such that the lever is, by its handle, moved rearwardly when an exponent is to be written. "This causes theratchet wheel and platen to 1'0: tate backwardly, the extent of such movement to properly locate exponents being determined by the stop pin 37. When the lever 33 is released the tension of the spring 31 will ordinarily set the platen back to original line printing position'and bring the lever against the stop pin 36, but to insure that this return movement will always occur,

23 on the lever and a spring 38 is applied to the side of the lever one end of a short shaft passing through the frame which has on its other end a finger piece 41, the manipulation of which turns the cam against the tail piece 42 at the end of spring 31 and so, by bending the spring, moves and holds the detent roller away from the ratchet wheel.

1. In a typewriting machine, the combination of a carriage, itsfront bearing, a platen mounted in the carriage, pawl and ratchet mechanism for operating the platen for line spacing, a rocker arm carrying the pawl, a horizontally arranged pawl-operating lever pivoted to move about a vertical axis 10 cated forwarp 1 of'the front bearing of the carriage, anda li nk connecting the rocker armwith the pawl-operating lever.

2. In a typewriting machine, the combination of a carriage, its front bearing, a platen mounted in the carriage, pawl and ratchet mechanism for operating the platen for line spacing, a rocker arm carrying the pawl, a horizontally arranged pawl-operating lever pivoted to move about a vertical axis located forward of the front bearing of the carriage, and a link connected at its rear end to the rocker arm and at its front end with the operating lever in a plane forward of the front of the carriage.

3. In a typewriting machine, the combination of a carriage, its front bearing, a platen mounted in the carriage, pawl and ratchet mechanism for operating the platen for line spacing, a rocker arm carrying the pawl, a bracket extending forward from the carriage, a horizontally arranged pawl-operating lever supported by the bracket and pivoted to move about a vertical axis located forward of the front bearing of the carriage, and a link connecting the rocker arm with the pawl operating lever.

4. In a typewritin g machine, the combination with the carriage, the platen and the pawl and ratchet for operating the platen for line spacing, of a bracket extending forward from the carriage frame, a horizontally arranged line space operating lever pivoted to said bracket to move about a vertical axis located forward of the front bearing of the carriage, a stop plate attached to said bracket and engaging the operating lever for limiting its return movement, a stop on the bracket for limiting the forward movement of the lever, a horizontally arranged incased spring connected with the lever and with the bracket for turning the lever to normal position, a ratchet wheel connected with a'platen, a pawl cooperating with the ratchet wheel, a rocking arm by which the pawl is carried and a link connected at one end with the arm extending forward therefrom and connected at its front end with the operating lever.

5. A line spacing device for a writing machine, comprising a platen controlling ratchet wheel on a shaft having a bearing in the end frame of the carriage, a spring carried detent roller adapted to act on the ratchet wheel, a vertical lever pivoted at its lower end to the carriage frame and to which the detent roller spring is secure between said pivot and the upper operating end of the lever and a forward and a backward stop between which the lever is free to move.

6. A line spacing device for a writing machine, comprising a platen controlling ratchet wheel on a shaft having a bearing in the end frame of the carriage, a spring carried detent roller adapted to act on the ratchet wheel, a vertical lever pivoted at its lower end to the carriage frame and to which the detent roller spring is secured between said pivot and the upper operating end of the lever, a forward and a backward stop between which the lever is free to move and a spring for movingand holding the lever against its forward stop.

In testimony whereof, I have hereunto subscribed my name.

' EDWARD B. HESS. Witnesses:

L. C. MYER, GEORGE F. HANDLEY.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. 0."

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