US400383A

US400383A - Maohiite

Info

Publication number: US400383A
Authority: US
Publication date: 1889-03-26
Anticipated expiration: 1906-03-26

Description

(No M dei.)

o G. W. N. Yosfwsl G. E. MERRITT.

TYPE WRITING MAHINB'.

' N0.4oo,s8s. Patentedlvrarfz, 1889.

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UNI'LTEDv vSTATES PATENT OFFICE. l i

GEORGE W. N. YOST, OF lNEY YORK, N. Y., ANI) CHARLES E. MERRITT, OFY

` SPRINGFIELD, MASSACHUSETTS, ASSIGN ORS TO THE WRITING MACHINE MANUFACTURING COMPANY, OF\NEVV YORK, N. Y.

'TYPE-WRITING lvlAcHlNl-z.

SPECIFICATION forming part of Letters Patent No. 400,383, dated March 26, 1889.

Application filed May 16, 1887.

To a/ZZ wiz/m it may concern:

Be it known that we, GEORGE W. N. Yosr and CHARLES E. MERRITT, citizens of the United States, and residents, respectively, of

New York city, in the county of New York and State of New York, and Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Type-Writin g Machines,

Io of which the following is a specification.

Our present invention in type-writing machines relates particularly to the universal bar, the means for operating the same, and the mechanism for actuating the rocker arm I 5 or bar that carries, as usual, the retaining dog or pawl of the spacing mechanism.

The objects of our invention `are to simplify and cheapen the manufacture of the machine and improve the operation thereof; 2o and to these ends our invention consists in the features of construction and combinations of parts hereinafter more fully described, and particularly pointed out in the claims.

In the accompanying drawings, Figure l is 2 5 a rear perspective view of a portion of a typewriting machine involving our invention; and Fig. 2 is a vertical section taken through the center of Fig. 1', same scale, butV broken away and the top of the machine lowered to contract the area of the view.

Similar letters and numerals of reference indicate like parts.

A represents the bed-plate of the' machine, which is perforated at 2 for the passage of the sockets 3, into which the lower ends ot the connecting rods 4 are preferably inserted. The key -levers 5 are arranged below the bed-plate, and the lower ends of the sockets 3 are connected thereto. rlhe upper ends of the connecting rods 4 extend to the typecircle or top plate, B, and operate the type bars or leverso, mounted thereupon. Posts `er pillars() C C2 C3 support the type-circle or top plate, and brackets or arms -D D, projecting outwardly from the posts C C3, are provided for supporting the usual guide-rails, E E

F represents the paper-platen or impres-l sion-roller of the carriage, G the framework in which it is mounted, and H the usual yoke Serial No. 238,353. (No model.) 4

which is connected to the carriage and cony structed to travel upon the guide-rails E El I I designate awell-known constructionof feed-racks, connected, as usual,`to the carriage; 't and J, 'a retaining dog or pawl which co-oper- 55 s ates therewith.

K represents a stud projecting rearwardly from the inner rack, I', and L a pitman orV connecting-bar, one end of which is pivoted to the stud and the other to a spring-actuated'o V driving-arm, M.

l N designates the type-basket, within and by which the type-bars are supported when ina state of rest. The type-basket is suspended below the top plate, B, by rods n n, secured to the posts or pillars.

As the carriage, the feed-racks, the yoke, v and the driving mechanism are all old and in common use at the present time, no very elaborate description or illustration of these 7o devices appears to be necessary in order to enable one skilled'in the art to make and use type-writin g machines involving our improvements.

6 represents the universal bar, which is 75 made in the form of a wheel, and is mounted, preferably, above the base of the machine and upon a stem or spindle, 7, which is adapted to reciprocate in a vertical line in a stand'or base, 8, secured to the bed-plate of the ma- 8o chine. The stem is formed at its upper end with a shoulder, upon which the hub or center of the universal bar or wheel is supported. The hub is formed with a tapering perforation,widest at its upper end, and that portion 8 5 of the stem which passes through the same is made of less diameter than that portion which travels in the stand or support 8. The connecting rods or links 4 preferably all pass up on the outside of the universal bar, but are 9o formed with inwardly-projecting bends or portions 9, which overlie and rest upon the upper surface of the universal bar, and by which t-he latter is vibrated. We have shown only three` connecting rods; but it will of 95 course be understood that in a machine made according to our invention there' may be as many of these rods as there are type-characters to the machine.

To the stem or shaft 7 is connected one end roc of a lever, 10, that is fulcrumed in a support, 11, screwed to the bed-plate of the machine, and to the outer end of said lever is pivoted a socket, 12, from which extends upwardly a rod, 13, that is connected to an arm, 14, projecting rearwardly from the rocker arm or bar l5, which is mounted in suitable .supports, 16, above the type-circle or top plate, B. A spring, 17 ,secured to the standard 1l,bears upon the outer end of the lever l0 and serves to return the several parts to their normal positions after having been actuated. The tension of this spring may be increased or diminished by means of a set-screw, 18, in the upper portion of the standard 11.

The rocker-arm is similar in construction and arrangement to that made the subjectmatter of another application, Serial No. 233,354, led simultaneously by us, and is formed with a slotted housing, in which the retaining dog or pawl .I is pivoted to vibrate to the right to enable the carriage to be drawn quickly back from the left of the machine. A spiral spring is fitted within the slot in said housing and operates to keep the pawl in a vertical position and in engagement with the feed or escapement racks I l.

The operation of the universal bar and the means for actuating the rocker-arm may now be explained. At each depression of a key-lever 5 to lift a type-bar a and effect an impression upon the paper which surrounds the platen, as usual, the connectingrod 'i is depressed also, and its inwardlybent portion 9 vibrates the universal bar. As any portion of the circular universal bar is depressed, its hub or center moves downwardly, and a portion of the periphery of the bar opposite to that which is depressed bears against the under side of the inwardly-bent portion or portions 9 of one or more of the connecting-rods 4, which become the fulcrum for the universal bar. As the hub of the universal bar is depressed, the spindle 7 is moved therewith and vibrates downwardly the inner arm of the lever 10, raising its outer arm against the tension of the spring 17, and through the connecting-rod 13 and the arm 14 oscillates the rockerar1n 15 and vibrates the retaining dog or pawl J from the teeth of the rack I into engagement with the teeth of the rack I', at which moment the rack I is shot forward by a spring, in the usual manner. Then the pressure upon the key-lever 5 is released, the spring 17 moves upwardly the inner end of the lever 10, downwardly the connecting-rod 13 and the arm 14, and again oscillating the rocker arm 15 vibrates the pawl J back into engagement with the teeth of the rack I, and at this moment the carriage is fed forward by the action of the spring driving-arm M and link L one tooth. During the downward vibration of the outer arm of the lever 10, and the consequent elevation of the inner end of said lever, the stem 7 is raised and carries with it the depressed porfion of the universal bar, which, with the weight of the type-bar 0 carries upwardly the depressed key-lever and connecting-rod 4, and the moving parts are thus all brought to 111e positions which they occupied 'before the pressure upon the key-lever 5, all as indicated by full and dotted lines at Fig. 2. It will be seen that the universal bar at each actuation acts as a lever of the second order, the power being applied at that point of its periphery at which is located the connecting-rod 4 that is drawn down, the fulcrum, one or more of the connecting -rods diametrically opposite the one being depressed, and the weight, the lever 10, and its appendages and connections. rl`he hub of the universal bar, being located midway between the fulorum and the point of application of the power, will move downwardly only about half the distance that the latter will move, which is, however, sufficient to enable it to oscillate the rocker-arm 15 to the proper extent. The portions 9,which act as the fulcra of the universal bar, it will be understood, are held stationary during the vibration of the same by the type bars or levers a within the basket; but some other means may be provided for this purpose. As the universal bar is actuated, the hub rocks slightly on the shoulder of the stem 7, and the latter is enabled to move in a vertical line, without binding in its support, by reason of the flaring perforation in the hub.

The key-board, key-levers, driving mechanism, feed-racks, carriage, dac., may beof any desired construction and may be arranged to operate as heretofore, our invention relating only to the universal bar and the means for actuating it and the rocker-arm. Of course, so far as the main feature of our invention is concerned, the connecting-rods 4, instead of being bent to form the hook-like portions 9, may be provided with collars, lugs, or other devices to serve the functions thereof; and it will be seen that many other variations in detail construction in the several devices embodying our improvements may be made without departing from the spirit of our invention.

Vtlhat we claim as new, and desire to secure by Letters Patent, is

l. In a type-writing machine, the combination, with a letter-spacing mechanism, of a circular universal bar supported at its hub or center and arranged to operate as a lever of the second order, substantially as set forth.

2. In a type-writing machine, the combination, with the letter-space-feedin g mechanism, of a universal lever made ring-like or circular, and connecting-rods arranged around said lever and adapted to operate the same, substantially as set forth.

3. In a type-writin g machine, a circular uni versal bar, in combination with a letter-spacefeeding mechanism, type-bars, keylevers, and vertically-arranged connecting-rods, the latter being disposed about the periphery of said Ico IIO

universal bar and adapted to actuate the same at each depression of a key-lever, substantially as set forth. i

' 4. In a type-Writing machine, the combination 0f a circular universal bar supported at its hub or center and arranged to act as a 1ever, the connecting-rods formed or provided .With means, substantially as described, for

6. In a type-Writing machine, the combination of the circular universal bar having a flaring opening in its hub, the sliding stem or support reduced in diameter Within said opening, and the connecting-rods constructed to actuate said universal bar, substantially as set forth.

Signed at Springfield, in the county of, Hampden and State of4 Massachusetts, this 14th ,f1-(1y v0f Aprirn. D. 1887.

G. W. N. Yosfr.l o. E. MERRITT.

Witnesses:

EDWIN F. LYFORD, E. J. CHANDLER.