US711727A - Type-writer. - Google Patents

Description

No. 7n,727. Paiented oct. 2|, 1902.

H. KocHENnnFEn.

TYPE WRITER.

(Application led Jan. 8, 1901.)

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No. 711,727. Patented oct. 2l, |902.

H. KUCHENDBFER.

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TYPE WRITER. (Application med Jan. s, 190i.)

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'TYPE WRITER.

(Application med Jan. s. 190i.)

4 Sheets-Sheet 4.

(No Model.)

UNITED STATES* PATENT A @Finca HEINRICH KOCHENDRFER, OF LEIPSIC, GERMANY.

SEECIFICATION forming part of Letters Patent N o. 711,727, dated October 21, 1902.

Application led January 8, 1901.

To a/ZZ whom t may concern'. Y

Be it known that I, HEINRICH KOCHEN- DRFER, a subject of the King of Saxony, residing at Leipsic, Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Type-Vriters, of which the following is a description.

The present invention relates to that class of type-writers in which a rotary type-wheel is employed. This wheel is rotated so as to bring the proper ltype into position above the paper and is then depressed, so as to make the required impression.

The invention comprises certain details of, construction by means of which the motion of the type-wheel toward the paper is rendered more elastic than heretofore, and thus the wear and tear of the type is lessened, whileat the same time means are provided for actuating the said wheel which dier from those hitherto in lvogue.

In'order to render the present specification easily intelligible, reference is had to the accompanying drawings, in which similar numerals of reference denote similar parts throughout the several views.v

Figure 1 is a front elevation of the machine, showing the key-levers in section and the housing partly broken away to illustrate the means for operating the type-wheel. Fig. 2 is a plan of the machine; Fig. 3, a section on line M M of Fig. 1; Fig. 4, a similar section on line N N of Fig. 1; Fig. 5, a perspective elevation of the type-Writer, showing the keyf levers in section and the keys omitted. Fig. 6 shows the type-wheel-shifting mechanism, and Fig. 7 the position of these parts after the wheel has been shifted to bring the second row of types into operation.

The type-wheel 1 is mounted on a shaft2', balanced transversely in points 3, so that the said wheel may be tilted toward'and from the paper-roll from the position shown at Fig. 3 to that in Fig. 4, and vice versa. The said shaft is mounted in a carrier-plate 4, which is supported between the said points 3. At its forward end the shaft carries a transverse plate 5,-having a guide-pin paral? lel to the shaft 2 and guided in the frame 4, a spring 6 being provided to normally press the shaft 2 toward the Writer. The said-shaft 2 is further provided with a long pinion 7,

semi No. 42,577. (No motti.)

meshing with a segment S, pivotally mounted at 9 in the lower part of the type-writer. The pivot 9 carries a cross-piece 11 at its forward end, said cross-piece being provided with forwardly-extending arms at each end, on which lever- arms 12 and 13, pivotally mounted at 14, are adapted to press. The segment 8 is normally held in its central position by means of the tWo springs 10 10. The arms 12 and 13 are normally held up by springs 15 and are actuated by means of the key-levers 16, under all of which the said two lever-arms extend. The keys 1b' are pivotally mounted in the well-known manner,and underneath the same is arranged a frame 17, adapted to swing on pivots 17', said frame beingvtipped by the movement of each key-lever. To the rear of the said frame is attached a striker 18, adapted to contact with the downwardly-extending arm 19 of the wheel-shaft-carrier frame 4 and tilt the same immediately after the required type has been brought into position over the paper-roll. The frame 17 is balanced to return to its original position as soon as the same has been released by the lever of the key depressed. Y. Thus an elastic contact of the type-wheel with the paper is attained and the wear and tear of the' types considerably lessened.

The type-wheel is provided with three or more or less rows of type, in the present case one row being small letters, one large, and one for figures and signs, and in order to shift the same from one row tothe other, according to requirement, a lever 21 is provided, pivoted at 2O and operable by means of a transverselymounted pivoted lever 24 and the two keylevers 22 and 23 resting thereon. The lever 21 extends upwardly and grips under the cross-bar 5 by means of a nose 30, so that when one or other of the keys of levers 22 and 23 is depressed the shaft 2 will be pushed back, so as to bring one or other of the lines or rows of type into position above the paper. In order to retain the said roll in the desired position until the impression has been made, a latch 25, having two ratchet- teeth 26 and 27, isprovided, pivotally attached to the side of the frame 4, saidl latch being adapted to engage over a pin 29 of the cross-bar 5 and retain the wheel in the desired position until the same returns after having printed the IOO type, whereupon the end of the said latch strikes against a stationary projection 31 and is thrown out of engagement with the pin 29, releasing the frame 4c and allowing the wheel to return to its normal position. The latch 25 is normally drawn down toward the pin 29 by means of a spring 28.

The device operates in the following manner: According to which of the levers 16 is depressed the segment 8 will be'pulled over a-greater or less distance to the right or left hand side, and thus bring the type of the Wheel into position to print. Immediately afterward the frame 17 is tilted, and the frame 4 is also turned on its pivot by means of the finger 18 and lug 19, so that the impression is made. If the second row of types is required, the lever 22 or 23 is depressed, and the lever 21 pushes the shaft 2 away from the Writer, the latch 25 immediately' thereafter engaging the pin 29 and retaining the wheel in the position desired to print from the second or third row of types while the wheelshaft is being tilted. The impression is then made as above described, and as the wheel returns to its normal position the latch strikes the stationary stop or lug 3l and is disengaged thereby from the pin 29, allowing the Wheel to return to its normal position.

The paper-transport mechanism and other parts of the type-writer are wellpknown and ,form no part of the present invention. It is therefore unnecessary that they be explained here.

I claim as my invention- 1. In a type-writer of the class specified,

'the keys are depressed and rock the same to turn the type-wheel and means for depressing the type-wheel-carrier frame, in the manner and for the purpose substantially as described.

2. In a type-writer of the class specilied, the combination of a frame to carry the typewheel shaft longitudinally movable therein, said frame being transversely pivoted, a rocking lever to push the said shaft to and from the writer, a latch having ratchet-teeth and a pin on the said shaft with which said latch engages to retain the'said shaft in theposi-` tion to which it has been moved, a leverto move the said shaft longitudinally when certain of the keys have been depressed and means for returning the said parts to their normal condition when the type has been printed in the manner and for the purpose substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses,

HEINRICH KOOHENDORFER. Witnesses:

MoRrrZ SrREER, CHAS. J. BURT.

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