US524867A - William seaks - Google Patents

Description

(No Modl.) 2 Sheets-Sheet 1. W. SEARS.

TYPE WRITING MAGHINB.

No. 524,867. Patented Aug. 21, 1894.

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W SEARS TYPE WRITING MACHINE.

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' UNITED S ATES PATENT OFF CE- j WILLIAM SEARS, OF BOSTON, MASSACHUSETTS.

"TYPE-WRITING MACHINE.

SPECIFICATION forming of LettersPatent No. 524,867, dated August 21, 1894.

Application filed July 24, 1893.

To all whom it may concern; Be it known that I, WILLIAM SEARS, of Boston, in the county of Suffolk and State of Massachusetts, have invented anew and useful Improvement in Type-Writers, of which the following, taken in connectionwith the accompanying drawings, is a specification.

My invention relates to a mechanism to be added to any of the ordinary type-writing machines, the object being to so improve the machines in ordinary use that the user may be able to print vertical columns of characters or vertical division lines (as may be desired) by the direct action of the machine. This object I attain by the mechanism shown in the accompanying drawings, in' which- Figure 1 is a view from the rearof the machine, showing parts in section and parts in rear elevation, a portion of the frame of the machine being represented as broken out, to show more clearly the working parts. Fig. 2 is an end view, the frame of the machine being shown in section, and only such of the working parts are shown as arerequired in explaining the machine. Figs. 3, 4:, 5, and 6 rep resent respectively certain details, in elevation and plan.

I have not shown in the drawings the full details of a typewriting machine; they are old and well known. I have selected for illustration a machine similar to the one described in patent granted to A. T. Brown, No. 465,451, dated December 22, 1891, known to the trade as The Smith Premier Typewriter, but I can, with obvious alteration,adapt my improvement to any of the standard typewriters.

In the drawings, A A represent the frame of the machine, and B the paper carriage. The paper carriage B supports the platen, the roll 0, and the usual adjuncts of a paper carriage of a typewriting machine.

L-L, Fig. 2, represents the keys, the depression of which,acting through the stems L -L' arm L L rocking shafts L -L arm L -L connecting rods L L and the typebars L L causes. the types to make impressions. t

The lateral movement of the paper 18 cffected by the following described devices: Each of the rocking shafts L -L is provided at its rear end with a short arm m-m (see Fig. 3), which, acting upon its respective pros un No. 481,330. (No model.)

againstthe action of the tension spring D 5 H ll I jection d'd' on the sliding grate D (see Figs.

(see Fig. 4). The sliding grateD is returned by thestress of the spring D when the key L is free from pressure and the rocking shaft allowed to turn back to its normal position; the movement of the sliding grate D transmits motion through the pin D3 and the bellcrank D, Figs. 1 and 3, the rod D and a ratchet device, to the rack D on the paper carriage B B. The bell-crank D is pivoted on the stud D which is made fast to the frame of the machine.

When it is desired to move the paper laterally and not to print, aspacing-key K,Fig. 2, is used; this spacing-key K has a stem K which, acting through the arm K rockingshaft K and arm K Figs. 3 and 5, operates the sliding grate D, and through its transmitting mechanism (already referred to) causes the paper to move laterally one space; by successively depressing the spacing-key K, the paper may be moved laterally to any desired extent.

The above mentioned parts of the machine have been but briefly described, as they are old, and not of my invention.

I will now describe the combinations by which a lengthwise motion is given to the paper,and by which vertical lines or vertical columns of characters may be printed.

E is a second sliding grate, made in all respects like the sliding grate D, having similar vertical bars provided with serrations e of in the same form as the serrationsd d of the Vertical bars of the sliding grate D.

The grate E is connected with a bell-crank lever E by a pivot E the bell-crank lever E being pivoted to the frame of the machine by the stud E and is connected to an upright link E. The short levers mm on the rocking shafts L L are made broad enough to act upon both of the sliding grates D and E, in case the grates were both drawn to the left by their respective springs E; but in use but one of the grates are in position to be acted ICO I will now describe my device for throwing and locking the sliding grates back. The space key K, Fig. 2, acting through the stem K, arm K rocking-shaft K and short lever K, Fig. 3, when depressed, will by pressing on the tooth d of the grate D, throw it back against the action of the sprin g D. The

auxiliary key S, acting through the stem S, arm S rocking shaft S and arm S operates the grate E in the same manner that the key K operates the grate D. To save the operator the trouble of holding the keys S or K down, I have a notch Pmade in the stem (see Fig. 5), into which a latch-bolt P may be pushed, and thus lock the stem K orS, as the case may be; this will hold the grate D or back out of the working of the short lever m m on the rocking shafts L L For printing a vertical line or vertical column of characters, I lock the key K down, that holds the sliding-grate D out of the action of the levers mm on the rocking-shafts L L and leaves the key S up. This will leave the sliding-grate E free to be acted upon by the levers m-m; hence every time that one of the, character keys L-L are .de-

pressed, the sliding-grateE will move, and in its movement will (acting through the bellcrank lever'E' and upright link E see Fig. 2) give motion to the lever E which in turn, acting through the spring latch e and the le ver E (pivoted at E and the pawl E will give motion to the ratchet E on thepaper 'roll 0, the motion of which causes the paper lever ll. to move just sufllciently to move the paper one space, and then slip ofi from under the lever E and still pass up, allowing the typebar to continue moving upward until the impression is made.

As the lever E is attached to the paper carriage, and moves with it, it is necessary to have a swinging bar H connected to the lever E and extending the whole length of the carriage, so that in whatever position the lever E is, it (being connected to the swinging bar H) will always be operated when the upright "link E acts upon the lever E I claim- 1 In a typewriter, the combination of. a mechanism by which a character may be printed and a mechanism by which the paper printed upon is moved a space, in the direc tion of its length with a key device by which both of the said mechanisms maybe caused to operate by a single movement of said key device to print one character directly underneath the other, substantially as and for the purpose set forth.

2. In a typewriter, the combination of one or more finger keys having mechanism for transmitting motion from said key or keys to the swinging bar H, with the said swinging bar, levers E and E pawl E ratchet wheel E and paper roll 0, substantially as described and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 22d day of July, A. D. 1893.

WILLIAM SEARS.

Witnesses:

FRANK G. PARKER, FRANK G. HATTIE.

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