US502072A - Type-writing machine - Google Patents

Description

(No Model.) 4 Sheets- Sheet- 1.

J. A. GARNBR. TYPE WRITING MAGHINB'.

` (N6 Model.) v4'Sheets-'Sheet 2.

. J. A. GARNER.

T YPE WRITING -MAGHINR (No Model.) 4.she1;ssheet s.

J. A. GARNER. TYPE WRITING MAGHINB.

` Patented July 25 .0 .l T m 2., WIJ? W W A Fd E. 5...: o d E o c E 0 F .L J a w G 4 sheets-sheen.

(No Model.)

J. A,.GA RNER. TYE WRITING MACHINE.

No. 502,072. Patented July 2511893.'

70@ Garne?" UNITE STATES PATENT OFFICE.

JOHN A. GARNER, OF KANSAS CITY, MISSOURI.

TYPE-WRITING MACHINE.

SPECIFICATIQN forming part of Letters Patent No. 502,072, dated July 25, 1893.

Applicationfiled September 21, 1892. Serial No. 446,431. (No model.) v

T0 @ZZ whom it may concern:

Be it known that I, JOHN A. GARNER, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented a new and useful Type-Writing Machine, of which the following is a specification.

My invention relates to improvements in type-writing machines, the objects of my improvements being to provide means whereby the line which is being written, or printed, may be viewed at all times by the operator without the necessity of raising the impact roller or moving any other part of the machine out of its normal position; furthermore, to provide means whereby all of the type-bars are in plain view and easily accessible, to facilitate cleaning and adjustment; furthermore, to provide improved means for guiding the paper around the impact roller; furthermore, to provide improved means for mounting and guiding the carriage, whereby oscillations thereof which produce imperfect alignment of letters is avoided; furthermore, to provide improved line-spacing mechanism, connected with the feed-mechanism, whereby when the former is operated the carriage is temporarily released from the latter; furthermore, to provide improved means for operating the ribbon-rolls by power derived from the carriage operating spring,whereby the keys are relieved from this portion of the work; and furthermore, to provide means whereby the typeguide and ribbon-guide may be withdrawn from in front of the impact roller so as to bring all of the printed lines into view.

Further objects of my invention will appear hereinafter in the description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings: Figure l is a front View of atype-writing machine, embodying my invention. Fig. 2 is a plan view of the same. Fig. 3 is a rear view. Fig. i is a side view, showing the line-spacing mechanism. Fig. 5 is a view of the opposite side. Fig. 6 is a central sectional view. Fig. 7 is a detail view of the means for reversing the ribbon feed.

A designates the frame of the machine, B the key-bars, C the keys, which may be arranged in any preferred manner, D Dsideuprights, F F, secured to the said platform,

and having opposite ends of the guide-rails,

G G', secured thereto, the guide-rail G being located in the lower ends of the uprights, close to the plane of the platform, and the guiderail G being located above and in rear of the latter.

The carriage, I-I, is provided at its bottom with grooved rollers, I I, to travel upon the lower guide-rail, and at its top, on the rear side, with similar guide-rollers, J J, to travel upon the upper guide-rail.

The impact-roller, K, is mounted in bearings at opposite ends of the carriage, a guideroller, L, is mounted in the frame in rear, and slightly below, the impact roller, with its surface in contact with that of the latter, a curved guideplate, M, extends above and below the guide-roller and is arranged concentric with the impact roller, and a small pressure roll is mounted upon the front edge of the guideplate to hold the front edge of the paper in contact with the impact roller.

rlhe carriage is provided with feed-mechanism comprising the stationary rack-bar,N, and the longitudinally movable rack-bar, O, arranged in j uXta-position to the bar, N; the teeth of the bar N being turned upward and the teeth of the other downward.

P represents a slide carrying, at its upper end a rigid pawl, Q to engage the teeth of the stationary rack-bar, and also carrying a pivoted pawl, R, to engage the teeth of the sliding rack-bar, said slide being mounted 'in a slotted guide, S,which is pivoted at its lower end to the platform.

A rock-shaft, T, is mounted upon the under side of the platform, and is provided with a depending universal bar, U, which extends transversely under the key-bars, so as to be depressed by the latter as they are struck, and connected to said rock-shaft by hangerarms, V V, whereby when the pressure bar is depressed the rock-shaft is rocked, thus causing an arm, W, which is carried by an intermediate part of the rock-shaft, and is attached ICO at its free end to the slide, P, to depress and operate the latter. A coiled spring, a, on the rock-shaft, holds the pressure-bar and slide, normally, in their raised positions.

In the ends of the stationary rack-bar are fitted the thumb-screws, b b, which engage opposite ends of the sliding, rack-bar, and limit the movement of the latter.Y By means of the two adjusting screws the sliding bar may be adjusted at both ends, and a far more accurate adjustment attained.

On one end of the carriage is arranged the line-spacing mechanism, comprising, essentially, a lever, c, pivoted at its lower end t0 the side of the carriage-frame and carrying a pawl-arm, d, to the free end of which is pivoted the pawl, e, which engages a ratchet on the end of the impact-roller. A spring, f,

, throws the pawl back after each movement of the lever. A stationary retaining pawl, g, pivoted to the carriage engages the said ratchetand holds the impact roller in its adj usted position.

To the lower end of the linespacing lever,

c, isattached a finger, 7L, which engages one end of an angle-lever, It, the opposite end of which engages the transverse trip-rod Zwhich engages the pawl Q of the stationary rack bar, whereby as the linespacing lever is operated to move the impact roller the distance necessary for the next line, the trip rod is operated, and being in a position to engagethe pawl, the latter is swung forward sufciently to free the rack bars and allow the carriage to be moved freely.

The Vertical type-bar supporting-plates, a ando, arearranged in front of the carriage, the rear plate, o, extending up above the front plate, n, and both plates having concaved upper edges, and to these plates are secured the type-bar hangers, p p p, consisting of lparallel ears, q q, between which are pivoted, on transverse pinsn` lr,the type-bars s s, the latter being provided with bored bearing-sleeves, t 15, which bear at opposite ends against the inner surfaces of the parallel ears. Thus, the type-barsare provided with long bearings, which prevent lateral deflection of the bars and .avoid the rapid Wearing of the bearings. The type-bars extend slightly beyond their bearings to form extensions, au, which are connected by means of rods or Wires, u o, with the key-bars, respectively, small bellcrank levers, w w, being inserted at intermediate points of said rods or wires to change the direction of draft to suit the particular.

type-bars and key-bars which are connected. It will be seen that the type-bars are pivoted to the supporting plates near their concaved upper edges,.and therefore are arranged in two approximately semi-circularseries,whereby all of the type-bars, when extended, converge toward` the center of the front side of the impact roller.

A hood, or rest, A', is arranged in front of the supporting plates, and provided with padding, B', to receive the type-bars when thrown 1back from the impact-roller.

The type-guide, C', which I employ in connection with my improved type-writing machine, consists of a vertical arm, D', provided at its upperend with an opening, E', sulicient to allow one type to pass, and through which allthe printing is done,apointer or index, F', being arranged on the bar, above the guideopening, to indicate, when drawn down, the point where the next letter will be placed. This vertical arm, D', slides in a stationary guide-arm, G', secured to the rear supportingplate, a spring, H', being provided to normally hold the guidein its elevated or operative position, as shown in Figi. Akey-bar, K', which is preferably arranged at about the center of the key-board is connected by a rod. or wire, L', with 'the lower endof the arm, D',where by, by depressing the key attached to said key-bar, the typelguide may be drawn down to enable an erasure to be made.` When drawnA down to the said position the indexindicates the point at which to placeA the car;- riage to make an y'desircd insertion, or to cornmence the line.

The ribbonrolls,M M', are arranged` at opposite ends of the'platform, and are provided with bevel gears, N' N', which are adapted to be engaged, respectively, by similaibevel gears, O' O', upon the extremities of thetransi versely-disposed Yrotary-rod, P', mounted in suitable bearings on .the platform and capable of a slight longitudinal movement in said bearings, whereby itmay be geared to either ot` the ribbon-rollsn Said rotary-rodi is` too short to beengaged with both ribbon rollsat once, as showni in dotted lines in Fig. 1. rPhe rotary rod is provided at an` intermediate point with a stud', Q', to enable it to be moved to engage either of the rolls.

The means for operating theribbon-rolls comprise a worm-gear, R', arranged onf-therotaryerod, P', a wormshaft, S", carrying a bevel gear, T', and aspring-actuated shaft, Ui', carrying a bevel gear to mesh withthe gear, T'. Theshaft, U', carries a coiledor spiral spring, V', and a drum, W',to which is' attached the end of the tension-belt, A", secured at the opposite end to the carriage and reeledi upon the drum. The shaft, U', also carries the loosely mounted bevel gear, B", above `mentioned, to mesh with the bevel gear, T', the gear, B" being connected to the hub of the drum XV' by means of a clutch, (1", on; the shaft, to enable the carriage to be moved freely to the right, without turning the wormshaft. y

From the above description the operation of my improved type-writing machine will be apparent.

The advantages of having the line which is being written, and consequently all before it, in plain View at all times, are that mistakes can be detected at once, and can be corrected without displacing any of the parts of the machine, and Yfurthermore the operator can read as he writes thus leaving less to the memory.

The advantages in having the type-bars located in front of the impact roller and in plain view, are that they may be cleaned and adjusted without disconnecting any of the parts of the machine, and as the hangers are arranged in upwardly concaved semi-circular series the type-bars fall upon the hood or rest with the type projecting upward, in position to loe cleaned, or brushed, without pressing the keys.

The ribbon-guides consist of plate-springs, D, arranged in pairs and parallel with each other, the inner ends of each pair being attached to the type-guide, on opposite sides of the guide-opening, whereby the ribbon is exposed only through said opening, and passing at their outer ends through guides, E E, and curved downwardly over the ribbon-rolls, as shown in Fig. l, the guides being pliable and being slidably titted in the guides E.

It will be seen that only a small portion of the ribbon is exposed at a time, thus avoiding the collection of dust thereon.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a type-Writing machine, the combination with an impact-roller, of avertically movable type-guide, comprisingasliding arm provided with a guide-opening, a guide in which said arm operates, key-bar connected to said arm, and spring to normally. hold it in its raised position, and the type-bars pivotally mounted in position to strike through the said guide-opening, substantially as specified.

2. In a type-writing machine, the combination with an impact-roller of a guide. a springelevated slide mounted in said guide and having a ribbon guide attached thereto, and means to depress said slide, substantially as specified.

3. In a type-writing machine, the combination with a platen, ribbon-rolls, and means to operate the same, of a ribbon-guide comprising duplicate parallel spring plates fitted at their outer ends in guides E adjacent tothe ribbon rolls and provided at the center of the impact-roller with an opening, and means whereby said guide may be depressed at its center, substantially as specified.

4. In a type-writing machine, the combination of the feed-mechanism'having rack-bars, a pivoted guide adapted to oscillate in a plane perpendicular to the rack-bars, a pawl-bearing slide mounted for reciprocation in said guide, a line-spacing lever and means for operating the platen thereby, and connections between the lever and said pivoted guide, substantially as specified.

5. In a type-writing machine, the combination of the feed-mechanism for the carriage, having a pivoted guide, a pawl-bearing slide mounted in said guide, to engage the rackbars, a'rock shaft connected to said guide, and the line-spacing mechanism having a lever which is connected to said rock-shaft, whereby when the line-spacing lever is operated the pawls of the feed-mechanism are thrown out of engagement with the rack-bars, substantially as speciied.A

G. In a type-writing machine, the combination with the carriage, the spring-actuated shaft carrying a drum connected-to said carriage, and the ribbon rolls, of a rotary-rod provided at its ends with gears to engage corresponding gears on the ribbon-rolls and carrying a worm-gear, and the worm-shaft meshing with said worm-gear and geared at one end to the shaft of the drum, substantially as specied.

7. In a'type-writing machine, the combination of the feed-mechanism having relatively movable rack-bars, a pivoted guide adapted to oscillate in a plane perpendicular to the rack-bars, a paWl-bearing slide mounted for reciprocation in said guide, key levers, and connections between the key levers and. said slide, a line-spacing lever and means for operating the platen thereby, a trip-bar l arranged horizontally in operative relation to the pivoted guide, and connections between the line-spacing lever and said trip-bar, substantially as specified.

8. In a type-writing machine, the feedmechanismfor the carriage having a station- 95 ary rack-bar, a sliding rack-bar, the slide carrying the pawls to engage said rack-bars, and the thumb-screws mounted in the ends of the stationary rack-bar, to engage opposite ends of the sliding-rack-bar, all substantially Ioo as specified.

9. In a type-Writing machine, the combination with a suitable frame having guides, a carriage, and pawl and ratchet feed mechanism, of a spring-actuated drum, a tension x05 belt connecting the carriage to said drum, ribbon spools a transverse shaft P geared to said spools and carrying a worm-gear, a wormshaft having a worm which meshes permanently with said worm gear, and gearing beno tween the worm-shaft and the shaft of the drum, and connected to the latter by a ratchet coupling, substantially as specified.-

In testimony that I claim the foregoing as my own I have hereto affixed my signature in 115 the presence of two Witnesses.

JNO. A. GARNER.

W itnesses:

C. 'EMARSIL R. H. CoNNnRs.

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