US576146A

US576146A - Type-writing machine

Info

Publication number: US576146A
Authority: US
Publication date: 1897-02-02
Anticipated expiration: 1914-02-02

Description

(No Model.) 3 SheetS- -Sheet 1/ U. S. NIUKERSON.

TYPE WRITING MACHINE. N0. 576,146. Patented Feb. $1897.

, (No Model.) 3 Sheets-Sheet 2.

0. s. NIOK'ERSON. TYPE WRITING MACHINE.

No.- 576,146.- tented Feb. 2, 1897 (No Model.) 3 Sheets-Sheet 3-.

0. s.. N-IOKERSON'. TYPE WRITING MACHINE. No. 576,146. v Patented Feb. 2,1897.

In" Y u A "II/Ila 'Il I inn-I i Ya: mum: PEIIRS co. nkovgxumqu wnsmus'ron. n. c.

UNITED STATES PATENT OFFICE.

CHARLES S. NICKERSON, OF RACINE, IVISCONSIN.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 576,146, dated February 2, 18 97.

Application filed July 17, 1895. Serial No. 556,215. (No model.)

I type-writing machines of the half-basket pattern, so called, in which a number of typelevers hinged 'at their outer extremities in a segment of a circle and each carrying type on which more than one character is engraved swing upward to a common printing-point;

and the objects of my invention are, first, to secure a simple and efficient mechanism for 'producing capital letters, figures, punctuation-marks, &o., without multiplying typelevers; second, to provide a simple letterspacing and ribbon-moving device by which the impact of the type in printing a letter or other character produces the letter-space and the necessary movement of the inking-ribbon; third, to provide for the easy and rapid examination of the writing at any time without disturbing the position of the paper-carriage upon its ways.

The first of these objects I secure by making the type strike not against a roller, as in most machines of this pattern, but against an anvil having a face equal to the length and breadth of the largest letter or other character to be printed. This anvil is movable and can be shifted at will, so as to present its face to any character upon the type.

The second object I secure by making this anvil movable also in a vertical direction for ward for examining the writing, carrying with it the paper-carriage and all its attendant mechanism without disturbing the position of the paper-carriage upon its bearings.

The details of the entire mechanism are set forth in the accompanying drawings, in which- Figure 1 is a top View of the entire machine. To avoid complicating the drawing, only one type-barhangerD is shown in position. The type-bars, with their connections, differ in no respect from those in common use in machines of this class. The nest S, against which the type-bars lie when at r st, is also omitted in Fig. 1. Fig. 2 is a vertical section through the center of the machine from'front to back along the line 22 22 in Fig. 1.. Two type-bars are shown, one at rest and the other raised to strike. The section is represented as viewed from the right-hand side. Fig. 3 is a lefthand view of the entire machine, showing the position of the auxiliary frame, the line-spacing mechanism, and the ribbon-spools. No finger-keys or type bars are shown. Fig. 4 is a front view of the auxiliary frame along the sectional line 44 44. in Fig. 2. Fig. 5 is a partly-sectional view of the left end of the paper-carriage, showing in detail the linespacing mechanism, along the line 55 in Fig. 3.

Similar letters and numerals refer to similar parts throughout the several views, capital letters referring to the main frame and all attached parts, small letters designating the auxiliary frame and its parts, and numerals designating the severalparts of the paper? carriage.

The main frame consists of the top plate A, the two standards or side plates B B, and the bottom plate 0. To the top plate A are attached the type-bar hangers D, the spindle of the upper ribbon-spool E, and the supports of the ribbon guide-rod R. (Shown in Figs. 2 and 3.) To the standards B B is attached the nest S, Figs. 2 and 3, and to the bottom plate 0 are attached the bearings of the keylevers J J, the bearings of the shift-keys M 0, the bearings of the space-key N, the bearings in which the auxiliary frame turns upon the rod (1, Fig. 4, and the feet upon which the machine stands.

In the machine represented there are twenty-seven type-bars, each moved by its own finger-key and each carrying a type upon which three characters are engraved side by side and about one-eighth of an inch apart. The middle character is generally a small letter, the one at its left the correspondingcapital, and the one at its right a figure or punctuation-point.

Each alternate type-bar is hung one-fourth of an inch higher than its immediate neighbors to avoid interference of the type in the nest. In the machine shown this is accomplished by fastening the type-bar hangers to alternate elevations and depressions in the top plate A.

The left end of the spindle E, upon which the upper ribbonspool F revolves, is flat tened and slotted, as shown, and clamped to the top plate A by the milled screw 11. This gives the ribbon a transverse motion of about its own width. The ribbon-spool F revolves freely upon the spindle E and is held by a thumb-screw, as shown.

The auxiliary frame (shown in its vertical position in Fig. 3 and in detailin Fig. 4) consists of the end plates at a and the bindingrodsb c d. The endsof d project beyond the endplatesct a and form the bearings on which the; auxiliary frame tilts backward when the writing is to be examined. A coiled springa holdsthe auxiliary frame upright, the upper parts of the end plates a a restingagainst the top plate A.

The upper connecting-rod b runs through a slot in the anvil c. This slot allows the anvil e to be moved along the rod 1), and also allows the anvil a vertical motion of about one-tenth of an inch. The anvil cis attached to a forked lever f, which is pivoted at h to the sliding rod t'. The lower end of the forked lever f bears two pallets j j,,which embrace the double rack 4 of thepaper-carriage;. This rack has teeth on both the upper and lower edges sloping in the same direction, and the pallets are so placed as to form the escapement for letter-spacin g.

To the forked lever f is attached at g the. sliding lever 7t. This lever bears a pawl (shown in Fig. 2) engaging at. its downward.

stroke the teeth of the ratchet-wheel Z, which revolves the lower ribbon-spool p. The lever 7t is extended downward until it reaches the leverN of the spacing-key N. The lower ribbon-spool p is clamped tightly upon the spindle m, which runs in the bearings n n andbears-the ratchet-wheel Z. The spool 19. may be moved longitudinally upon the spindle. m about the width of the ribbon.

A springffl l ig, 2, keeps the lever 7;, the forked lever-f, and the. anvil edepressed.

To-the binding-rods c and d isfastened the,

plate 1'. This plate r carries onitsfront side the. beari-n gs n n of the spindle m and on its reverseside the wheel 5-. This wheel 5 is re.- volved by the coiled spring 3' and upon its. grooved face carries the cord 2, which draws thepaper-carriage to the left.

The sliding rod t' has a longitudinal motion of about one-eighth of an inch in both directions. As-thisslidingrod 'i carries the'forked lever f, its motion must carry with it both the anvil e and the pallets j j, and since one of which also acts as a paper-guide. makethe main binding-rods2 2. of steel pipe,

these pallets always engages a tooth of the rack 4 the longitudinal motion of the rod t' in either direction will carry with it the papercarriage and all its parts. The sliding rod 6 is held in a central position by the two springs 'U 'u. The right-hand spring 1) is not absolutely necessary, since the spring 3 keeps the papercarriage and the sliding rod 1' held continually to the left. The right-hand springt is inserted only to secure a prompt return of all the parts in very rapid writing.

The sliding rod 2' is moved by the levers w and Q7. The lever w, which is pivoted upon the binding-rod d, is attached to 11 at h and when moved by the shift-key lever M will push the sliding rod 0; to the right. The ends of the levers h N',.and. O, which correspond to the keys M, N, and O, are shown in section.

in Fig. 4.

The paper-carriage consists of the end plates 1 1, Figs. 3, 4, and 5, the hollow binding-rods 2 2, and the upper binding-rod 3, Ipreferto as shown, for lightness and. strength andto place the rails-y y, upon which the paper-car-- riage moves, withinthem. The weightof the carriage rests upon two wheels 5 5, running upon the upper rail'y. By means-of screwsiin the lower hollow rod 2, acting against the lower rail 3 the paper-carriage is adjusted to run without lateral motion.

The paper (shown in Figs. 1 and 2.) is-ca-rri ed between two small rubber-coveredzrollers 6 7. The upper roller 6 is held downv upon? by the springs 14. 14- and is revolved by the milled head 8. The lower roller 7 bearsat its leftend the gear-wheel 17, the-teeth of which engage with those of .thegear-wheeli), which revolvesfreely upon. the rack4. To thisgear-wheel 9 is fixed the ratchet-wheel 10. The rack 4 revolves inthe end. platesl 1. To the left end of the rack 4 is fixed the lever 12, bearing a pawl 13, which engagesin. the teeth of the ratchet-wheel 10. The lever 12 isdepressed by the spring 11. By raising the lever 12 the rack 4 is revolved about. one.- fourth of aarevolution, disengaging its teeth from the palletsjj, so thatthe paper-carriage may be moved freely in either direction. On releasing the lever 12. itis depressed by the spring 11, revolving 9 and 17, thus forcing paper, and. also. shows the. exact. position of the next letter to'be printed, when the auxiliary frame is tilted backward to examine the writing. It moves with the sliding rod tand always presents, the slot to the face of the: anvil e.

Operation: To introduce the paper, the

. anvil e.

edge of the paper is placed between the roll-- ers 6 7, and the roller 6 is revolved by the milled head 8. The paper runs under the anvil 6, between the inking-ribbon and the shield z, behind the guide-rod 3, and should have a sheet of blotting-paper behind it.

- To print a small letter, the sliding rod '6 is so adjusted that the anvil e faces the middle character on each type as it is raised to strike. This middle character is usually a small letter. Depressing any finger-key K raises its corresponding type-bar and causes the type to strike the ribbon and paper up against the The impact of the type raises the anvil e as far as it will go. Through the forked lever f this releases the upper pallet j from the tooth in the rack 4. The paper-carriage moves to the left, the spring f depresses the lever f with the pallets jj, and the paper-carriage moves the remainder of a full letter-space.

To make a space between words, depressing the space-key 7N lifts its lever N, which acts upon the sliding lever and the forked lever f, operating the pallets j j, as described above.

To print a capital letter, the capital-shift key 0 is so placed that it is under the thumbs of the operator when his fingers are over the letter-keys K K. The key 0 may be depressed by the thumb at the same time any letter-key K is depressed. The rear end of the key-lever O, acting upon the lever to, pushes the sliding rodz' to the right, presenting the face of the anvil e to the right-hand character-upon the type, (2'. 6., the left-hand character, the type being upside down.) At

the same-time the pallets jj carry the papercarriage also to the right, presenting the proper space on the paper to the left-hand character upon the type, which, as already stated, is a capital letter.

To print a figure or punctuation-point, depressing the key M in a similar manner through the lever '10 pushes the sliding rod 1' to the left. As the printing of a figure or punctuation-point ordinarily requires the use of both hands and the printing of a capital letter requires only one hand there is no danger, as in other machines using two shiftkeys, of confusing the two.

To release the paper-carriage without moving the paper through the rollers, raise the lever 12 through a little less than one-fifth of a revolution. The pawl 13 does not then env gage with the wheel 10.

To change the inking-ribbon when it is all wound upon the lower spool, bot-h spools are removed and shifted each to the other spindle. I am aware that previous to my invention type-writing machines have been made with converging type-levers of various forms and that shifting devices have been applied to such machines to secure the printing of more than one character from each type-lever. I therefore do not claim the combination herein described in all its parts; but

WVhat I do claim as my invention, and de- 7 sire to secure by Letters Patent, is-

1. In a type-writing machine, the combination, with converging type-levers each carryin g type upon which more-than one character is engraved, of a laterally movable anvil against which the type strike, having a face about the length and breadth of the largest character to be printed, capable of being shifted so as to present its face to any charac-- ter upon the type, in the manner, and for the purposes substantially as described.

2. In a type-writing machine, the combina tion of the vertically-movable anvil e, actuatedby the impact of the type upon its face, with the forked lever f, hinged to the sliding rod 2', held down by the spring f, and having upon its lower extremity the pallets j, j, which engage the teeth of rack 4 of the paper-carriage, in the manner and for the purposes substantially as described.

3. In a type-writing machine the combination of the type-bars and their operating devices, with the anvil e, the vertically-oscillatory forked lever supporting said anvil, the retracting-springf, the vertically-sliding lever 70 connected to the forked lever f and provided with an operating-pawl, and a spindle m, carrying a ribbon-spool and provided with wheel Z adapted to be engaged by the pawl on the lever It, all substantially as described.

4. The combination of the space-key, the sliding lever 76, provided with a pawl, the ribbon-spindle having a ratchet-wheel adapted to be engaged by said pawl, the lever f carrying the escapement-dogs, and. the carriage provided with the feed-rack, the space-key being adapted to operate to feed the carriage and rotate the ribbon-spool without operating the printing mechanism, all substantially as described.

5. In a type-writing machine the combination of the sliding rod 2', carrying the forked lever f and the ribbon-shield .2, held in a central position by the springs 12, o, with the levers w and w, space-keys M and O to operate said levers to move the sliding rod 't', longitudinally in either direction, in the manner and for the purposes substantially as described.

6. In a type-writing machine, the combination with a laterally-movable anvil of a ribbon-shield having a slot opposite the face of the anvil,designed to be shifted laterally along with the anvil, substantially as described.

7'. In a type-Writing machine the combina tion with the revolving rack 4 of the lever 12, the ratchet 10, the pawl 13, the spring 11, and the wheels 9, 17, designed by the revolution of the rack 4, to release the teeth of said rack from the pallets j, j, and to produce the linespacing, substantially as described.

0. S. NIOKERSON. Witnesses:

H. W. NIOKERSON, J OHN H. ROEMER.