US845264A - Type-writer. - Google Patents

Description

No. 845,264. PATENTED FEB. 26, 1907..

W, E. RISINGER'.

TYPE WRITER.

' APPLIOATION FILED HA3. 1. 1906.

WITNESSES: INVENTOR W yaw 6. w d

Altomey ment of the key-lever action of the Blickenssimilar elevation of a modification.

onrrnn sirri rnsrsrnnr ornron wlLLlE E. RISINGER, OF ROCHELLE, ILLINOIS, ASSIGNOR 0F ONE-HALF TO E. H. MCKENZIE, 0F MINNEAPOLIS, MINNESQTA.

TYPE WRITERH Specification of Letters Patent.

Application filed March 1, 1906. Serial No. 303,613

Patented Feb. 26, 1907.

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Be it known that I, WILLIE E. RISINGER, a citizen of the United States, residing at Rochelle, in the county 01 Ogle and State or lllinois, have invented new and useful improvements in "y e-Writers, of which the following is a specification.

This invention relates particularly to keylevers for typewriter machines of that class in which the type is carried by a type-wheel. It is particularly modinczttion and improveder'lertype WHting machine or of other 1113.- chines having a similar method of operation. Said machines have keydevers which are arranged usually in three banks, the levers of each bank being of dil'lerent lengths. In consequence of this the force necessary to operate. the keys of the different banks varies. The top bank is particularly difficult and unsatisfactory, and this di'iliculty is characteristic of the machine. Similarly, the middle bank of keys is more dillicult of operation than the lower bank, the levers of the latter being longer than the others. Under the alphabetical arrangement of the keyboard known as the Sc like" the work occurs chiefly on the lower bank of keys, the proportion of seventy er cent. being done on that bank, twenty-tour per cent. on the middle bank,- md six per cent. on the top bank. Designedly the Work is thrown. much possible oil the top bank and onto the lower blink, Where the notion is easiest; but in the arrangement of the keyboard known as the Universal nearly half the Workoi the machine (forty-seven percent.) occurs on the top bank of the keys. The result is that the operation of the machine {LS a whole is proportionately ditiicult and unsatisfactory snd operators have objection to its use.

The object of the present invention is to equalize the relative force and length of stroke of the various banks by means of a rnmli'licetion of the key-levers, whereby the strokes are controlled and equalized and capable of adjustment at the Will of the maker.

The invention is illustrated in the accompanying drawings, in which Figure -1 is a side elevation of one of the key-levers and connected parts. Fig. 2 is a l Referring to the form shown in Fig. 1, 6 indicates one of the set or levers which are ful crunred by hooks at their ends under the sec tor-shnft 7 in a manner similar to the ordi banks, as shown at 10, and said levers arefulcruincd at their ends to rear frames or blocks 1 1. A variety of adjustments to suit the various lengths of the levers 8 or other conditions is provided by means of different connecting-points for the rods 9 and also difierent fulcrum-points for the levers 8. Said rods may be hooked into the lever 6 at any one of the holes ('2' c d end'to the levers 8 at anyone of the holes efg. A further modification of the stroke maybe efiected by locating the fulcrum-pin at qny one of the holes 72 'L 7. By this manner of construction and adjustment one key-leven-n'my he made as easy to operate as another, the stroke hein equslized throughout the entire keyboard with respect to the diiierent banks of keys. By these means the operation of the various levers is greatly improved and the force required to operate the machine greatly lessened, and the touch is made uniform for all the keys.

in the modification shown in 2 levers of a diil'erent order are used. Here the bailopereting levers 6 are continued toward the rear beyond the sector-shaft 7, as at 12, and

rest at their ends upon the rear ends of the keydevers S", which levers are of the first order. The leverage is varied by varying the lengths of the arms 12 of the lovers 6, as indicated in dotted lines, so that the ends thereof will rest. upon the key-levers S at (lifl'erent points, as at q r 8. Also the fulcrum oi the key-lever may be adjusted or fix d at different points tn e. The positions may thus be varied to regulate and equalize the stroke, and one key-lever may he made as agreeable in operation as another.

I claim 1. in a. type writing machine of the class stated, the combination with the type-wheel-n operating levers, of banks oi'sepsrete key-levers connected thereto, the connections heing various, to equalize the stroke of the re- 2; I eeeeee.

their rear ends and having; keys arranged in several banks at their front ends, and conneeting pull-rods between the said levers.

In testimony whereof I have signed my name to this speeificetieli in the presence of 15 two subseribing Witnesses.

WILLIE E. RISINGER.

Witnesses: V I

" A. BpSHjEADLE,

- FRANCIS .E. Dmessmz.

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