US309780A - Type-writing machine - Google Patents

Description

2 Sheets'Sheet 1 W. H. GIL'MAN & D. E. KEMPSTER.

(No Model.)

TYPE WRITING MACHINE.

No. 309,780. Patented Dec. 23, 1884.

IFIX/EF Ears r\- Pr rzns womb-h Washingmmllc.

(No Model.) 2 Sheets Sheet 2 W. H. GILMAN 82; D. E. KEMPSTER.

TYPE WRITING MACHINE.

Patented Dec. 23. 1884.

WHTFIEEEEE.

LFlVE [1ft] IS. amid/13 56 6w ATEN 'r rricE.

YVILLARD HERBERT GILMAN AND DANIEL E. KEMPSTER, OF BOSTON,

MASSACHUSETTS.

TYPE-WRITING MACHINE.

'JPECIE'ICATION forming part of Letters Patent No. 309,780, dated December 23, 1884.

Application filed December 11, 1883.

To all whom it may concern.-

Be it known that we, WILLARD HERBERT GILMAN and DANIEL E. KEMPSTER, both of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Type-Vriting Machines, of which the follow ing description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to simplify and improve the construction of that class of type-writing machines wherein the type or letters used are carried at the edge of a rotating disk having 'avert-ical movement. In this present invention the rotating type-wheel, set in motion in one direction, as herein shown, by a cord, and. in the other direction by a spring, has its shaft supported by pointed bearing-screwsheld in a metal key made as a yoke-lever pivoted upon a standard erected upon the stationary top of the machine, the hand-piece of the said lever being at one end thereof and the axis of the type-wheel being at right angles to the line being printed, the movement of the paper for spacing between lines being in the direction of the said axes. The paper to be printed upon by the typewheel, co-operating with an adjustable inkingribbon, is held upon alongitudinally-movable platen in a carriage having a lateral movement underneath the said stationary top plate, the latter serving to support the spools which carry the inking-ribbon. The lever which operates the typewheel is provided with a pawl which engages and turns a toothed gear, to be described, that meshes with a rack and moves the paper-holding carriage laterally after each descent of the type-wheel. The index showing the letters and provided with recesses or notches to be engaged by the indexslide held by the operator is placed at one side of the stationary top plate, and the said slide is mounted upon a guide, so that it can be slid thereon and also oscillated as the slide is moved by the hand of and in a direct line toward and from the operator, such direction of movement being. easy and natural. The top plate is cut away to permit the paper to be readily seen.

features in which this in The particular (No model.)

[ vention consists will be pointed out in the claims at the end of this specification.

Figure 1 is a plan View of a type-writer embodying our invention, portions of the top plate being broken away to show parts under it. Fig. 2 is a front view of the same. Fig. 3 is a detail showing the rear side of the typewheel with its operating-spring. Fig. 4 is a detail showing a part of the lever or key to be described, and Fig. 5 is a detail of the alarm or click.

The main or stationary part of the typewriter consists of a top plate, A, placed upon suitable sills, A A", thus leaving a suitable space for the reception of the carriage B, having at one ende es B, which embrace a guiderod, B while th other or rear end of the said carriage has suitable projections to enter a groove, B, in the rear sill, A". (See Fig. 2.) The guide 13 is extended laterally across the type-writer, and the carriage is moved laterally by means of a toothed wheel, B, which engages a toothed rack, 13, attached to the carriage, leaving, however, a space below the said rack for the reception and longitudinal movement in guideways in the side pieces of the said carriage of the paper-holding platen 0, provided at one side with a numbered scale, 0, corresponding with the lines to be printed, one or more pointers, 0 on the carriage 00- operating therewith, thus enabling the operator to return the platen to position after having inspected the printing. The stationary part of the frame at the right of the carriage B has pivoted upon it at2 a bell-crank lever, 0*, having an inclined inner edge, the rear end of the said lever at its inner side being normally held by a spring, 3, in contact with a pin, 4., in which position the said lever, as in Fig. 1, presents the inner edge of its arm next the carriage as a rigid incline, or as a surface which will not move by pressure applied to the inner edge of the lever between its fulcrum and the carriage. The right-hand edge of the platen G is provided with a toothed bar, 0 it having a tooth for each line to be printed. As the carriage is moved backward the toothed bar (3 strikes against the inclined toits extreme right-hand position preparatory to commencing a new line, one of the teeth of inner edge of that end of the lever nearest the carriage, and the said lever, rigidly held against movement about its pivot by pressure applied to it at its inner edge, as stated, presents a rigid incline, against which the said tooth acts, and, as the lever cannot turn while the tooth slides against it toward the fulcrum of the lever 0", results in pushing the platen forward sufficieutly to present the paper correctly for a new line to be printed. The platen having been thus moved forward, as described, on the carriage, the latter 'will be started toward the left with the platen, and at such movement of the carriage and platen a tooth of the toothed bar 0 will act against the outer inclined side of the lever C; but the said lever will not move the platen longitudinally as when the tooth next to it rode over the inner edge of the said lever, for as the said tooth acts upon the outer edge of the said lever the latter turns on its fulcrum away from the pin 4 and against the spring 3, and as the tooth of the toothed bar retires from contact with the said lever, the latter, under the pressure of the spring 3 against one end, is turned on its pivot suiiiciently to throw its opposite end toward the operator far enough to permit the tooth which so passes from the outer edge of the said lever to (at the next movement of the carriage and platen to the left) strike against the inner inclined edge of the lever.

0, thus again causing the forward movement of the carrier independently of the carriage. The platen is held in the position where it is placed by the pawl O by a catch, 0", set in the carriage and acting against the notched lefthand edge of the scale 0. The wheel B has its axle held in a standard, D", secured to the top plate, A,-whieh is cut away as much as possible consistent with strength to leave the platen and paper thereon exposed to view, and the said wheel is moved by a pawl, D, pivoted at D on an ear of the lever or key E, pivotedat E upon a suitable standard, E", erected on the top plate, A. The lever E has at one end of it a hand piece or knob, 6, and is normally kept elevated by a spring, E, placed in a springholder, E, which also serves as an upward stop for the said lever or key, as in Fig. 1, the movement of the lever E by the said spring efiecting the movement of the said wheel B and earriage. The pawl D has a short arm provided with a knob, D", by which the pawl may be removed from between the teeth of the wheel B", and at such movement the short arm of the pawl D, acting on the short arm of the detent D, pivoted at D, removes it from engagement with the said toothed wheel, thus leaving the said wheel free and enabling the carriage at such time to be removed by hand, as desired. This detent D, having its fulcrum or pivot D .on an earof the leverE and connected by spring 8 with the pawl D, acts upon a pin, 9, in such time as to enable the hook of the detent to engage the wheel B* only as the pawl reaches its upstroke, and consequently the movement of the toothed wheel and carriage is prevented from overrunning said detent, thus enabling the apparatus to be run rapidly without improperspacing of the letters. The ink-ribbon a, of usual kind, is passed under suitable guides, a, between the spools c n, held frictionall y 011 shouldered spindles a a in standards a a7. outer end, and is screwed into the thread cut in the standard a and in connection with a check-nut, a, it will be obvious that the spindles may be rotated and moved longitudinally to place any desired part of the ink-ribbon between its edges under the type-wheel G. This type-wheel is composed, chiefly, of a drum or suitable rim, an electrotype-strip, 12, having letters or characters thereon, (designated by the letter t in Fig. 1,) and a suitable axle, 13. The axle 18 is shown as countersunk at its ends to receive pointed bearing-screws 14, one only of which is shown in Fig. 1; or it might be just the opposite, thus enabling the axle to be held and adjusted with the greatest nicety and with the minimum of friction. The wheel G has attached to it at l5-one end of a spring, G, (see Fig. 3,) and the other end of the said spring is connected with a stud, 16, held in the lever E. (See detail, Fig. 4.) The spring operates to turn the type-wheel in one direction to effect the winding of the cord 18 upon the drum, the said cord, after passing over the pulleys 19 20 on studs fixed to the frame, being connected with the index-slide (Z, mounted loosely on a guide-rothd, held in cars (i The index-slide (Z is provided with a linger or point, (1, which is adapted to enter the recesses or notches 22 in the index-plate 23, attached to the top plate, A, as herein shown, along its lefthand side, the said plate being provided opposite each hole with a letter or character corresponding with a letter or character upon the eleetrotype-strip of the type-wheel G, the letters and characters on the said wheel and the said index-plate being so arranged with relation each to the other that the placing of the point (1 of the slide (Z in a recess or notch, 22, opposite the letter or character which it is desired to next print upon the paper will so actuate the wheel through the cord and spring connected with it as to place the corresponding letter or character of the said type-wheel at the lower side thereof, to strike the ribbon a as the lever or key E is next depressed. The wheel G is provided with a pin or projection, c, (see Fig. 1,) which strikes the stop 26 fast on the plate A whenever thepin d is in the outermost recess or notch of the series of recesses 22, that recess being called the word-spacing recess. \Vhen the lever E is depressed with the pin 0 in line with the stop 26, the descent of the lever and wheel G is arrested before the latter strikes the ink-ribbon sufiiciently to force it against the paper to print; but the lever is not at such time arrested so as to prevent ro- -tating the wheel 13. The top plate is pro- Each spindle is threaded at its vided with a downwardly-projecting pointer, f, so located with relation to the printingpoint of the wheel G that, a wrong letter having been printed and erased, the right letter may be printed in the exact spot by placing the spot where the erasure was made in line with, but at the opposite side of, the pointer, after which, by moving the platen longitudinally, the spot to receive the new impression may be placed in exact position under the printing-point. The distance of the pointer from the printing-point is known by the operator as being equal to a certain number of lines represented by the scale C. The carriage B is provided at its under side, near its rear end,with a downwardly-extended pawl, free to swing for a limited distance in the direction of the length of the carriage. This pawl, just before the carriage reaches its farthest position in its movement toward the left, strikes behind the inclined free end of an alarm or click, 7:, made as a metal spring, (see Figs. 1 to 5,) and attached to the inner side of the back sill, A and draws the end of the said spring from thesaid sill,and as the end of the line is reached the pawl arrives opposite a notch, h, in the said spring, permitting it to snap off and strike the sill with a click, thus making an alarm. The alarm or click 7b is made adjustable by screw l2. in aslot therein to adapt it to paper of different widths. The spool a is provided with a ratchet, 26, which is engaged and moved by the pawl 27 on the front part of the lever B. The lever E has its fulcrum on pointed screws 28 28.

In Fig. l the spring-like washers 1 which act against the ends of the spools a a to keep their opposite ends against the shoulders a of the spindles, a a, are kept up against the spools 9 by pins or studs y, extended into holes in the said spindles.

I claim- 1. The stationary plate A, the key or lever mounted thereon, the type-wheel carried by the said key or lever, and the ink-ribbon, combined with a platen and carriage made movable one 011 the other under the type wheel, substantially as shown and described.

2. Thestat-ionary plate,theindex 23 thereon, the index-slide and guide for the same, and cord 18, and pulleys or guides for it, combined with the type-wheel, the spring G, and the pivoted lever or key E, upon which the said type-wheel is adjustably mounted, substantially as described.

3. The stationary plate, the index 23 there on, the index-slide, a guide for it, the typewheel, its spring, the cord to connect the said type-wheel and index-slide, as described, and the lever E and pawl D, combined with the toothed wheel B, the rack moved by it, the laterally-movable carriage, and the longitudinally movable platen therein, substantially as described.

l. .The stationary plate, the index 23 thereon, the index-slide, a guide for it, the typewheel, its spring, the cord to connect the said type-wheel and index-slide, as described, and the lever E and pawl D, combined with the toothed wheel B, the rack moved by it, the laterally-movable carriage and the longitudinally-movable platen therein, and with means, substantially as described, to automatically move the platen in the said carriage, as and for the purposes set forth.

5. The ink-ribbon, the pivoted lever or key, the type-wheel adjustably mounted thereon, and the pawl and detent, combined with the wheel B, the rack-bar, and the carriage, substantially as described.

(5. The ribbon a, type-wheel, lever to move it, and the carriage and stationary plate A, combined with the pointer f, to operate substantially as described.

7. The laterally-movable carriage, guides for it, platen with ink-ribbon, type-wheel, and lever to move it, combined with the top plate, A, cut away at its front side next the operator, as represented,to show the platen and carriage, substantially as described.

8. The lever or key E, wheel B, rack, and carriage B, combined with the pawl D and detent D, each of the latter being provided with short arms, whereby the removal of the pawl D from the wheel B also removes the detent therefrom, substantially as described.

9. The carriage provided with the pointer, combined with the platen, provided with the scale marked to indicate lines, substantially as described.

10. The top plate, the index-scale 23 thereon, provided with recesses or notches, the

guide d, parallel with the said scale, and the index-slide mounted on the said guide so as to be both slid and oscillated thereon, and provided with apoint, (2, combined with a typewheel, a cord to connect it with the said index-slide, a spring, G and a lever or key to move the said t-ypewheel, all substantially as described.

11. The lever or key, the type-wheel mounted thereon, and provided with the pin or projeetion 0, combined with the top plate and the stop 26, to operate to arrest the downward movement of the type-wheel, to obviate printing, substantially as described.

12. The ink-ribbon, the spools, the screwthreaded and shouldered spindles to hold the spools, the standard a threaded to receive the threaded part of the spindle, and the checknuts to provide for lateral adjustment of the spindles and their spools, substantially as de scribed.

13. The ink ribbon spool, its attached ratchet and spindle to hold the said spool and ratchet, combined with the type-wheel moving lever or key, and with a connected pawl to engage the said ratchet and turn the said spool, substantially as described.

. 14. In a typewriter, a bed-plate provided with an index, 23, at right angles to the line being printed, and a type-wheel and lever or key upon which the said wheel is mounted and by which it is moved vertica11y,combined with a cord to move the wheel, and an index i I l l names to this specification in the presence of two subscribing witnesses.

W'ILLARD HERBERT GILMAN. DANIEL EL KEMPSTER.

Vi tnesses:

G. XV. GREGORY, \V. H. SIGsToN.

5 slide, and a guide for it to insure the movement of the said slide in a line out and in from the operator, substantially as described.

In testimony whereof we have signed our

Images