US691777A - Type-writing machine. - Google Patents

Description

N0. 69|,777. Patented 1an. 28,` |902.

.W. J. KAUFFMA-N.

TYPE WRITING MACHINE.

.Apphvation led June 15, 1.899. Renewed June 2 (No Model.) 4 Sheets-Sheet I.

jll

WITNESSES No. 691,777. Patenteman. 28, |902. w. J. KAUFFMAN.

TYPE WRITING MACHINE. (Application led June 15, 18991' Reewed Jfu'ne 24, 19014. 4 Sheets-Sheet 2.

(No Model.)

uuvEN'ron No. 69I,7.77. Patented Ian. 28 |902.

W. J. KAUFFMAN.

TYPE WRITING MACHINE.

Appliuation IiIfsd June 15. 189D. Renewed June 24,'1901.)

(No Model.) 4 Sheets-Sheet V3.

No. 69|,777. Patented 1an. 2s, |902.

w.4J. KYAUFFMAN.

TYPE WRITING MAGHIIIE.A (Application filed June 15, 1899. Renewed Juno 24, 1901.)

(No Model.) 4 Sheets-Sheet 4.

p 15 with parts removedfor clearness.

UNAITED STATES' WILLIAM J. KAUF FMAN, OF CANTON,

PATENT OFFICE.

oHIo, Assleuon To THE KAUFFMAN TYPEWRITER COMPANY, A CORPORATION ,OF OHIO.

l IYPE-WRITING MACHINE.

@SPECIFICATION formingfpart of Letters Patent No. 691,777, `dated. January 28, 1902.

- Application filed iTunerl, 1899. Renewed June 24, 1901.l Serial No. 65,83 8, (No model.)

To all whom/ it mycotcern:

Be it known that L'WILLIAM J. KAUFFMAN, of Canton, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Type-.Writing Machines, of which the following'isa full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speciiication, in which;` 1o

my improved type-Writer, taken in front of the arc-shaped support `for the key-levers, with this support partly broken away. Fig.

2 is a vertical cross-section of the ymachine Figs. 3 and 4 are partial'end views showing the lever for adjusting the tension, and Figs. 5 and 6 are partial horizontalsections above and below the key-lever shaft.,

My invention relates to type-writers, and more particularly to those of the type set forth in my pending application, Serial No. 683,174, filed J une 11, 1898, wherein a series of parallel Avertically-swinging'key-levers are used con- '2 5 nected with parallel vertically-swin gin g bellcrank levers, the bell-'crank levers being connected by links to a. series of type-levers mounted in a curved plane; and its object is to improve the connections between the key- 30 levers and the type-levers, so that the keylevers will have a substantially uniform touch or require substantially the same amount of power to actuate the type-levers, and, further,

to provide connections which are easily as- 3 5 sembled or taken apart and to afford simple means for changing the tension or releasing the key-levers.

In the drawings, 2 represents the rectangular frame of the machine, having at the 4o rear bearings in which is carried a key-lever shaft 3, to which the key-levers 4 are piv- Y oted, spacing-collars. v5 being formed between the ends of the key-levers. These ends of the levers are slotted to engage the shaft, as

45 shown in Figs. 2,3, and 4, and are held in engagement with the shaft by springs 6, each having one end secured in the shaft and the other bent into hook form to engage the lower edge of a key-lever. To adjust the tension 5o of these springs, I secure to the projecting Figure lis an irregular vertical section of l ends of the shaft 3 levers 7, each having at engage any one of the series of holes in an arc-shaped plate 9. ZThe levers are made of spring material, so that the pins may be pulled out of one set of holes and the levers tension. held in adjusted position` by the pins engaging the holes.

other and swing within vertical slots in the front plate 10 of themachine. A longitudinal shaft 1l is secured rigidly in the frame above the intermediate portions of the keylevers, and on this'shaft are loosely mounted a series of swingingbellcrank levers 12.

vided with adow'nwardly-extending forked end portion 13, having a cross-pin engaging a horizontal slot 14 in the key-lever, which eX- tends through the forked portion of the arm. A short slot 15 is preferably provided in the key-lever, which leads to the slot 14 and provides for easy assembling of the parts. The upper arm of each bell-crank is .also forked and provided withv ay pin 16, which passes through a slot in the'end of a link 17, connecting the bell-crank lever to its type-lever 18. The open slot is formed at this end of the link to allow for insertion of the pin on the bellcrank, the action of the joint being a simple pivotal one. The other end of the link is provided With a similar open slot engaged by a cross-pin 19in the inner forked end of the ble vgwhe type-levers are pivotedto an arcshaped base 23, the upper part of which is radial arms 24. These arms are themselves slotted to receive the reduced end portions of short shafts 26, upon which the type-levers its upper enda pin 8, which is adapted to:v

moved to rock'the shaft and give-the desired On releasing the levers they are slotted to form aseries of inwardly-extendingv The key-levers all extend parallel with each The lower end of each bell-crank lever is protype-lever, this slot being.y necessary for the -IOO swing. The ends of each shaft abut against each other within the slots of the arms, as shown at the right hand of Fig. l, and these shafts are rigidly secured in place by small wedge-pins 27, driven in through holes in the arms and each bearing upon the reduced ends of two adjacent shafts. The rear portions of the connecting-links 17 are bent so as to bring each such portion into a plane substantially parallel with the plane of movement of its type-lever, the degree of inclination depending upon the angle of the particular type-lever to which the link is connected. t,

The carriage 28, having a platen 29, may be of any usualform and does not form a part of my invention.

In operating the machines when a key is depressed the bell-crank lever having the loose connection therewith swings forwardly, the pin moving along the slot in `the key-lever, and draws forward the link 17 with asliding movement, thus swinging the type-lever so that the type strikes the ribbon at the proper point.

The advantages of the invention result .in part from the peculiar connection between the links and the type-levers. Ihave found that where these connections were ordinary pivotal joints the touch of the keys at the end of the bank or set differed slightly from those at the center by reason of the variance in the effective lever-arm. I have `overcome this difliculty by the new form of connection shown. By using the guide-rod to compel a forward and backward sliding movement of the link and a loose sliding and swinging connection between the link 'and `type-lever the eifective lever-arm is made substantially the same for each key-lever. The slotting of the joint connections provides for easy assembling and disconnecting, a si m ple an d efficient tension device is provided by which the tension of the keys is simultaneously adj usted, and the mode of carrying the type-leversprovides for easy removal and adjustment.

Many changes may be made in the form and arrangement of the parts by the skilled mechanic without departure from my invention, since What I claim isl. In a type-writer, a series of parallel vertically-swingin g keylevers,va series of parallel vertically-swinging bell-crank levers connected therewith, swinging type-levers, and links connecting the bell-cranks and the typelevers, said links having sliding guide connections independent of the type-lever connections; substantially as described.

2. In a type-writer,a key-lever, a bell-crank lever connected to and actuated by said keylever, a swinging type-lever having a link connecting it to the bell-crank, the link having a vertical open-topped slot receiving a crosspin on the type-lever, and guide connections for the link; substantially as described.

3. In a type-writer, a swinging type-lever having a ,pivotal connection with a link, a guide engaging the link, and arrangedto prevent its swinging while actuating the typelever, and a key-lever connected tothe link; substantially as described.

4. In a type-writer, a bell-crank lever connected to and actuated by a key-lever, and a type-lever having'a link connection with the bell-crank, the link havin ga stationary guide engaging it, and arranged to prevent its swinging while actuating the type-lever5 sub stantially as described.

5. In a type-writer, a swinging type-lever having a loose pin-and-slot connection with a link, means for actuating the link, and a stationary pin engaging a slot in the link and guiding its movement; substantially as dei scribed.

6. In a type-writer, a series of key-levers, a shaft having springs engaging the key-levers, and mechanism for rocking Athe shaft into different adjusted positions; substantially as described.

7. In a type-writer, a series of key-levers pivoted to a common shaft, springs secured to the shaft and engaging the levers, and mechanism for rocking the shaft and holding it in adjusted position; substantially as described.

S. In a'typewriter, a series of key-levers having at their 'ends open slots inclosing a common shaft upon which they swing, and holders secured to the shaft and holdingthe key-levers in place; substantially as described.

9. In a type-writer, a swinging key-lever having an open-ended slot therein, a bellcrank lever pivoted at its elbow above the keylever, and having a downwardly-bent arm with a projecting pin engaging a slot in the key-lever, and a type-lever having a pivotal link pivotally connected withl the other upwardlyproj ectin g arm of the bell-crank substantially as described.

10. In a type-writer, a key-lever, a bellcrank having a sliding pin-and-slot connection therewith, a type-lever, anda linkconnecting the key-lever and type-lever, and having at each end a slot with an open top engaging a pin in the bell-crank and also in the key-lever; substantially as described.

Il. In a type-writer, a support having projecting lugs between which the type-levers swing, each lever being carried on a short shaft having reduced end portions projecting into the two adjacent lugs, and a pin driven in endwise within each lug arranged to secure the ends of two shafts therein; substantially as described.

l2. In a type-writer, a support having projecting lugs between which the type-levers swing, short shafts having reduced ends lying in slots in the lugs and carrying the levers, and wedge-pins arranged to be driven through ICO the lugs and Ysecure the ends of two adjacent Intestimony whereof I have hereunto set shaftsherein; substltially asdescribed.' Y my hand. f a 13. typewriter aving 'a longitudinal shaft at its rear, provided with peripheral WILLIAM YJ KAUEFMAN 5 grooves and a series of key-levers having slot- Witnesses:

lned ends engaging thegrooved portions of'said C. W. STROHN, shaft; substantially as described. CHAS. A. REX.

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