US448996A - Type-writing machine - Google Patents

Description

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

TYPE WRITING MACHINE.

No. 448,99. Patented Mar. 24, 1891. S ,E' .1.

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Meg/MI BY M ATTORNB.

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(No Model.) Y 4 sheets-sheet 2.

' .J. RICHARDSON.

TYPE `WRITING MACHINE.

No. 448,996. Patented Mar. 24, 1891.

y .my 4f Ik INVENTOR.

ATTORNEYS.

4 Sheets-Sheet 3.

'J. RIGHAIMJSO1\I.` TYPE WRITING MACHINE.

Patented Mar. 24, 1891.

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TYPEWRITING MACHINE. No. 448,996.. Patented Mar. 24, 1891..

WITNESSES: IN VENTOR:

ATTORNEYS.

f UNITED STATES ATENT p Fries.

JAMES RICHARDSON, OF NORTII TARRYTOIVN, NET YORK.

TYPE-WRITING MACHINE.

SPEOFCATION forming part of Letters Patent N o. 448,996, dated March 24, 1891.

Appiiman'fnd June 15, 1886.

T0 @ZZ whom t may con/cern:

Be it known that I, JAMES RICHARDSON, of North Tarrytown, in the county of Vestchester and State of New York, have invented a new and Improved Type-Writing Machine, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in which- Figure l is a plan view of my improved type-writing machine. Fig. 2 is a longitudinal section taken on line fr as in Fig. 1. Fig. 3 is a detail view of the type-space-regulating lever. Fig. 4 is an inverted plan view, (the bottom board removed,) parts being in section on the line @c .r, Fig. 5. Fig. 5 is a transverse section taken on line y y in Fig. 4. Fig. G is a side elevation of the escapement. Figs. 7 and S are vertical transverse sections of the type-wheel-operating mechanism. Fig. I) is a horizontal section taken on line .e in Fig. 8. Fig. lO is a vertical transverse section of the turret, showing the brake mechanism. Fig. ll is an inverted plan view of portions of the paper-feeding, printing, and letter-spacing mechanisms. Fig. 12 isa detail view of the sleeveand arm on the rockshaft of the paper-carriage. Fig. 13 isa vertical transverse sectional view, parts being broken away, of the casing-drums 0 J, their springs, shaft N, its pinion, and part of the spur-wheel M; and Fig. la is a detail view showing a portion of the drum .I in full lines and part ot' the spur-wheel M in dotted lines.

Similar letters of reference indicate corresponding parts in the different figures of the drawings.

The object of my invention is to make a type-writing machine in which the movementsl of the type, paper, inking apparatus, and printing-press will be effected by power called into action by but not applied through the keys, in which the type, ink, and paper may be readily changed, in which the uniformity of the impression will not be affected by varying pressure upon the keys, in which the spacing of the letters may be uniform, and the writing always visible to the operator as it goes forward.

My invention consists in mechanism whereby stored power may be used to give an oscillatory motion to a type-wheel to bring the desired letter' opposite the platen or roller for serial No. 205.230. (No man.)

printing, and in combination therewith of mechanism similarly actuated for producing an impression, and in various novel features of construction, whereby correct spacing, uniform inking, a uniform impression, and rapid operation are secured.

. The frame or body of the machine is preferably formed of a rectangular case A, which incloses the greater portion of the mechanism.

The key-levers a are bent at a right angle and are fulcrumcd on the rod B, supported above the top of the casing A by suitable standards. Each key-lever is provided with a spring c, arranged to return the key to its normal position after having been depressed. The keylevers are made of different lengths to provide space for the finger-pieces d, which are mounted on short standards e, secured to the free ends of the levers. The arms f of the key-levers d project downward into the casing A through a slot made in the casing for that purpose and carry near their lower ends a small adjusting-screw g.

From the under surface of the top of the casing A are suspended three oscillating bars h j from vertical arms h 'j, the arms being pivoted on studs la, projecting inward from opposite sides of the case A. The three bars 7L j lie in the paths of the armsf'of the key-levers d, so that when the keys are de pressed the bars are swung on their pivots more or less, according to the requirements of the letter or character represented by the key. The lower bar j, which is-directly opposite the series of screws g, is tapered from the middle each way toward its ends, being narrowest at the ends, and this bar is arranged to be pushed backward more or less by a key, according to the location of t-he key relative to the tapered bar j, and through mechanism presentlyto be described to limit the movement of the type-wheel, and so determine the letter to be printed.

Opposite the center of the key-board and near the rear side of the machine a turret C is secured to the upper surface of the casing A, and concentric with the turret upon the under surface of the top of the casing is secured a hollow supporting-cylinder D. This cylinder1 D is provided with a head E, inV

which is journaled the lower end of the ver- IOO tical spindle F, which is arranged axially in the turret and in the hollow cylinder, and is also journaled in the thickened portion of the top of the casing A. The spindle F is free to rotate and carries at its upper end a flanged collar G, arranged to slide thereon. To the upper flange of this collar is fitted a type-wheel II, having a rim which extends downward over the outer surface of the turret C a sufficient distance to receive one or more rows of type-faces. The type-wheel H is apertured to receive a registering-pin projecting from the upper flange of the collar Gr, and the wheel is clamped on the collar by a nut l, turning on the threaded upper end of the collar. The turret C is grooved circumferentially near its upper edge to receive an annular spring m, which is slit and provided on opposite sides of the slit with pins n, which project inwardly through a notch o, formed in the edge of the turret.

In a longitudinal slot p, formed in the side of the turret C, is arranged a rod q, which passes upward through a guide fr, formed in the material of the turret between the slot p and the notch o, and is provided on its upper end in the notch o with a double wedge or dart shaped head s, which extends upward between the pins fn. The lower end of the rod has itsbearingin the casing. Upon a threaded portion of the rod q in the slot p is placed a n ut t, from which is suspended a spiral spring u, which surrounds the rod q and carries a-t its lower end a collar e, which rests normally on the pin tu, passing transversely through the rod.

The spindle F is provided with a longitudinal slot a', in which is pivoted a latch b on the pin c. The upper end of the latch is curved toward the side of the spindle. and is beveled at its extremity, as indicated in Fig. 9. rlhe end of the latch below the pivoted pin c is provided with an offset slot d', the upper and lower portions of the slot being connected by acentral inclined portion e. A collarf surrounds the spindle F, an d is provided with a transverse pin g', which passes through a slot h, arranged in the spindle at right angles to the slot a. The pin also extend through the slot d of the latch b', so tha when the collar f is slid up or down on the spindle the engagement of the pin g', carried by the collar, with the inclined portion e of the slot in the latch will cause the latch to be turned on its pivot suiiiciently to project the upper end of the latch into or withdraw it from an internal longitudinal groove in the collar G. The collar j" is grooved eircuinfer entially and embraced by a ring i, secured to an arm j', carried on the upper end of a rod 7c', the said rod passing through a hole Z in the top of the easing A parallel with the spindle F. The opposite end of the arm j extends toward the rod q and is forked to embrace the rod below the collar r.

Upon the spindle F, above the head E, is secured a pinion m', and below the head E a spur-wheel n', secured to the spindle F, is inclosed by a cap o', secured to the head E. In the cap o and head E is journaled a spindle p', having upon its upper end a wide-faced pinion q', which is bored axially to receive the end of the rod It. The lower end of the rod k is grooved circinnferentially to receive a pin y1", projecting from the inner surface ot' the pinion q.

In the spindle p is formed a spiral groove s', and between the cap o and the head E and upon the spindle p" is loosely placed a pinion t', provided with a pin a', which projects into the spiral groove s of the spindle p.

A rack-bar fr', passing through holes in the walls of the hollow cylinder D, is held in engagement with the long pinion q. One end of the rack-bar is connected with a spring w', which in turn is connected with the back of the casing A. The opposite end of the rackbar n is turned downward and connected by the wirad with the bar On the stud b, projecting from the under surface of the top of the casing, isjournaled a sleeve c, to the lower end of which is se cured a lever I, having two arms d c". The arm e carries a toothed sector f, which engages the pinion m on the spindle F. The arm d is slotted and carries a stud g.

To the under surface of the top of the casing A is secured a drum J, in the center of which is journaled a shaft K, connected with one end of a volute spring L, the opposite end of which is secured to the rim of the spurwheel M. Upon the end of the shaft K, projectingbelow the head ofthe drum, are secured a ratchet-wheel h" and a miter-wheel 1I". The ratchet-wheel is engaged by a pawl j, pivoted to the head of the drum J, and is pressed into engagement with the ratchetwheel by a spring k". The ruiter-wheel fi is engaged by a similar ruiter-wheel l on the end of a shaft m, journaled in bearings supported by the head of the drum J and in bearings in the wall of the casing A, the end of the shaft outside of the casing being squared to receive the key by which the spring L'is wound. Inside the casing A the shaft mf is provided with the wheel yy2 to receive a strap forwinding with power. On the inner end of the shaft K is loosely placed a spur-wheel M,

and in bearings formed in the side of the drum J at a point opposite the stud g, carried bythe lever I, is journaled a tubular shaft N, carrying a pinion fa", which meshes into the spur-wheel M. Within the lower end of the tubular shaft N, and below the head of the drum J, is loosely placed the short spindle of of a drum o, containing a spring p, one end of which is secured to the inner wall of the drum, theopposite end being attached to the shaft N. The spindle o9 is engaged by a screw 010, the head of which rests on the shoulder N', formed within the upper end of the tubular shaft N, thereby loosely supporting the drum. The winding of the springp is arranged relative to that of the ICO lIO

spring L, so that the spring Il, acting through' the shaftN, always tends towind thespringp In the lower face of the drum o is insertedA a crank-pin q, which receives one end of a connecting-rod 1', the'opposite end of which is received on the stud g of the lever I. A circular frame s is attached to the head of the drum J and partlysurrounds the drum o.v To the frame s is secured a dat springt", which extends partly around the periphery of the drum o and is bent outward radially from the surface of the drum, forming an arm u, the outer end of which is bent over at an obtuse angle, as shown in Fig 4. In the periphery of the drum o is inserted a stud o, which projects a short distance from the drum and is received in a slot formed in the springi t near the angle of the arm u.

To the head of the drum J is pivoted an angled lever O, having two arms w The arm w carries at its extremity a trip-pawl a3, arranged to swing on the pivot b3 and pressed by a spring c3, so that when the lever O is pulled in one direction the pawl t3 engages the bent end of the arm u of the spring t and disengages the spring from the stud o permitting the drum o to turn. The continued forward motion of the lever O disen-A gages the pawl a3 from the end of the spring t, and the spring by its own elasticity immediately returns into contact with the periphery of the drum o, so that when the drum has completed one revolution the stud `v again enters the slot of the spring t and is arrested by engagement with the spring at the end of the slot. IVhen the lever O is returned to the point of starting, the pawl a3 passes the angled end of the arm a and is again ready for engagement therewith. The extremity of the arm 0c of the lever O is connected by a wire cs with the bar t'. A spiral spring d3, connected at one end with the arm of the lever O and at the opposite end with the head of the drum J, serves to return the lever O to the point of starting after having been moved to permit of a single revolution of the drum 0. Each'revolution of the drum o causes the lever I to make one complete oscillation, and in so doing to carry the pinion m and spindle F through a little more than one complete revolution in each direct-ion. The movement in excess of a complete revolution is made equal to the spindle movement required to operate the latch and brake mechanism, thus making it possible to utilize an entire circle of type on the type-wheel. The storage of power in the spring p, contained by the drum o, permits of the rapid rotation of the drum and the quick back-audforth movement of the lever I on account of the small inertia of the parts immediately connected with the execution of this move. ment.

The rear of the casing A'is rabbeted and provided with a groove e3 for receiving the ratchet-bar f3, forming one side of the frame P of the paper-carriage Q.

Upon the stud g3, projecting from the under surface of the top of the casing A, isjournaled a sleeve h4, provided with an arm fis, which is connected by a wire L7'3 with the lower end of the independent spacing-key b. The upper end of the sleeve hl carries a forked arm 7c3, on which is pivoted a pawl Z3, capable of engaging the ratchet-loarfs, of the papercarriage. The pawl Z3 is pressed into engagement with the ratchet-bar f3 by the spring mS when the arm 7c3 is moved forward in the act of feeding, but is kept normally out of engagement with the ratchet-bar by a pin 'm3,

.projecting from the under surface of the top l of the casing A, so that when the independent spacing mechanism is not in use it does not in any way interfere with the free movement of the paper-carriagein either direction.

The sleeve c, to which the lever I is attached, is provided with two arms 03193, proj ecting from the sleeve approximately at right angles to each other. To the arm d is pivoted a hooked pawl g3, which engages the ratchet-bar f3, and is provided with a spring r3, which presses on the rabbeted portion of the casing and tends to throw the pawl into engagement with the ratchet-bar. The pawl qs is beveled or angled on opposite sides of the point which engages the ratchet-bar for engagement with the stud s3, projecting downward from the under surface of the casingtop, and the iin ger t3, projecting from the side of the rock-shaft its, the said rock-shaft being provided at its lower end with an arm fus, which is connected by a wire w3 with the swinging. bar h. It will thus be seen that the turning of the shaft ug will cause the finger t3 to engage one of the beveled surfaces in the pawl q3 sooner or later, and thus determine when the pawl g3 will be disengaged from the ratchet-bar f3, thus rendering the feed of the paper-carriage variable. q

The amount of motion transmitted to the rock-shaft 11,3 is determined bythe distance through which any particular key swings the bar h, and this distance is regulated by varying the width of the bar opposite the several key-levers lo produce thc desired difference in feed for the different letters. The bar h, when regulating the feeding mechanism in the manner described, if engaged by a key which is to print a wide or a narrow letter` will be moved adistance corresponding to the requirements of that letter, and the forward movement of the carriage will be stopped when the pawl is disengaged from the ratchetbar by striking the finger t3.

To the varm p3 is pivoted one end of the link wi, which is apertured to allow it to pass around the rock-shaft a3. The opposite end of the link is pivotally connected to ay lever R, which is fulcrumed on a rod d4, passing through a guide b4, secured to the under surface of the casing top. The rod extends through the side of the casing and is received in a swivel-nut c4, by means of which the rod may be moved lengthwise in either direction.

IOO

IIO

The lever R is provided with a slot (Z4. The slotted portion of the lever R extends across a slot c4 in the top of the casing A.

The paper-carriage Q carries a shaft S, which is grooved throughout its entire length, the groove being shown in cross-section only in Fig. 2, and which carries at its ends arms f 4, and between the ends and within the carriage is placed a sleeve g4, which carries an arm h5, passing downward through the slot e* in the top ot' the casing and entering the slot d'l of the lever R. The sleeve gL is journaled in supports t, (shown in dotted lines in Fig. 1,) secured to the top of the casing at opposite sides of the slot el. The paper-carriage, when moved back and forth in its guides, carries the shaft S through thc sleeve g, and when the sleeve g'4 is turned by the action of the lever R on the arm h5 the shaft is made to rock by the engagement of a feather carried by the sleeve and entering the groove of the shaft.

In the arms f", which are secured to opposite ends ot the shaft outside of the frame of the paper-carriage, are received the journals of the impression-roller T, and in ears `7"*,projecting from the front edges of the arms f", is j ournaled a roller k", which bears lightly against the roller T and serves to guide the paper upward in front of the type-wheel Il.

To the arms f4, which are prolonged be yond the bearings ot' the roller T, are pivoted the arms l, which are formed on or attached to the bar m, which serves as a guide and check for the paper which passes between the roller and the bar mi, and the said bar is graduated to form a scale for a guide for writing. The bar thus pivoted is arranged eccentrically with reference to its pivots, so that when it is turned on its pivots it will be lifted from the face of the roller T.

On opposite sides of the turret C are journaled the shafts n* 04. The shaft n" is provided with a ratchet-wheel p, and above the ratchetavheel an arm qi is loosely placed on the shaft and carries a spring-acted pawl r", which engages the ratchet-wheel 17.*. The arm q* is oscillated by a rod s", secured to the arm tt of the lever I, which arm projects through a curved slot in the top of the casing A and is received in an aperture in the free end ot the arm g4. The shaft n is squared above the ratchet-wheel p* to receive a bobbin t, to which is attached one end of the inkingribbon tot.

Upon the shaft o1 is loosely placed a bobbin t5, which contains the inking-ribbon. The bobbins t* t5 are interchangeable, and when by the action of the pawl and ratchet the inkiug-ribbon is unwound from the bobbiu t5 and wound upon the bobbin t* the bobbins may be interchanged and the ribbon will be rewound upon the bobbin t,

At the rear of the type-wheel are arranged two wire springs '151, over which the inkingribbon a* is stretched in its passage from one bobbin to the other. These wire springs have only enough strength to prevent the inking ribbon from touching the type-wheel when the type-wheel is revolving and no impression is being taken. 'lhe wire springs t are curved outwardly at the lower portion of the vertical part to prevent the ink-ribbon from falling and are bent forward and secured to the top of the casing A in position to be engaged by the roller la* when the said roller, together with the paper-roller T, is pushed forward in the operation of printing, so that at the instant of taking the impression from the wheel H the ribbon u* closely envelops the portion of the type-wheel nearest the roller T, and is thus prevented from touching the paperroller, except at a point opposite the character from which the impression is taken.

Vhen it is desirable to print directly from the type-wheel without the employment of an ink-ribbon, I provide ink-rollers fw", which are chambered around their peripheries and provided with a perforated covering af, over which is stretched a cloth or felt band a, which is keptusatu rated with printing-ink carried in the cavity of the roller. The inked surface rolls in contact with the periphery of the type-wheel and supplies the type with ink.

The ratchet-bar fhas a longitudinal groove,

in which is adj ustably secured a stud b5, which projects a short distance above the top of the casing A, and upon the upper end of a shaft c5, journaled vertically in the casing, is secured an arm d5, which projects over the ratchet-bar frs and into the path of the stud b5. The lower end of the shaft ci is provided with an arm c5, which is connected by a wire f5 with one arm ot the bell-crank lever g, pivoted to the head of the drum J. The other' arm of the bell-crank lever may be brought into the path of the escapement-lever O by the touching of the arm d5 by the stud b5, thus preventing the return of the lever() to the point ot' starting, and in this manner stopping the action of the machine at a point in the writing determined bythe position of the stud Zf".

So long as the type-wheel 1I revolves in its normal position only lower-case type will be brought into use, and when it is desirable to print capitals the type-wheel must be raised. To accomplish this, the collar G is provided with a iiange h6, which is received in the groove of a roller turning on the upper end of a rodj, which passes through a hole in the top of the casing, and is provided at its lower end with a head 79"', between which and the under surface of the casing is placed a sprin g m5. The rodj'3 is notched in opposite sides to receive the forked end of the capitalizingkey lever G', which is pivoted in standards a5 and projects through a slot in the turret C. The capitalizing-key lever G' is arranged opposite the spacing-key lever I) in the mid- IBO dle of the key-board, so as to permit of depressing the said capitalizing-key lever, if desirable, si multaneonsly with the type-keys.

To prevent the rack-bar o from moving during the excursion of the lever I, an eccentric-lever o5 is pivoted in ears projecting from the side of the hollow cylinder D, the arm of the lever projecting into the path of the toothed sector f, carried by the lever I. The lever o5 is pressed into engagement with the rack-bar o( by a curved spring p5, secured to the cylindrical casing D.

The paper-carriage Q. carries standards g5, which support a paper-guide T5, consisting of a plate of metal inclined at a suitable angle and curved forward under the roller T toward the contact of the roller K4 with the roller T.

The operation of my improved type-writin g machine is as follows: The mainspring L being wound and paper slipped into place on the printing-roller T, the key representing the character to be printed is depressed. The arm fof the key-lever engages the bar 7' during thek prescribed portion of its forward swing, drawing forward proportionally the rack-bar fo, rotating the shaft p', and raising the arm j', thus shifting the pin g to such a position with reference to the part c of the cam-slot d that the type-wheel will be detached from the spindle and held in position for printing when the letter of the key is opposite the printing-roller. The bar h, being also engaged by the key-lever, turns the rock-shaft its by means of the wire 105 and brings the finger t3 into a position which will detach the paper-carriage-feeding pawl g3 from the ra't'ch` et-bar f3 when the paper-carriage has been moved through the space required for the letter about to be printed. The same move ment of the key-lever brings it into engagement with the bar 7'., which draws back the arm fr of the lever O, releasing the spring t from the stud o, allowing the drum o to make one revolution. During the forward movement of the crank carried by the drum the lever I is swung on its pivot, turning the spindle F through the engagement of the sectorf with the pinion m on the spindle, and by the connection of the spindle F with the pinion t through the spur-wheel n', carried by the spindle, the shaft p', rod k', and arm 7" are raised by the rotation. of the pin a in the spiral groove of the shaft p the shaft being prevented from rotation by the engagement of the rack-bar t" with the pinion q. When the collar f', which is lifted by the arm j, is raised suiiciently to bring the pin g', carried by the collar,into engagement with the inclined-portion e of the slot d in the latch o', the latch is withdrawn from the slot in the collar G, and at the same instant the annular spring m is expanded by the engagement of the double-wedge-shaped head s with the pins n, the rod q, carrying the head s, being forced upward by the engagement of the arm j with the collar fu, attached to the spring u. The

expansion of the annular spring on in this manner creates sufficient friction between the spring and the inner surface of the typewheel to instantly arrest the motion of the type-wheel. After the arrest of the typewheel in the proper position for printing the letter of the key depressed the spindle F, being detached from the collar G, continues to rotate. The forward movelnent of the arm e" of the lever I moves the lever R through the medium of the connecting-link 105, and the lever R imparts motion to the arm h", turning the sleeve g4, thereby rocking the shaft S of the paper-carriage and moving the roller T,with the paper carried thereby, forward toward the type-wheel; but before tlie contact of the paper with the type-wheel or with the ribbon interposed between the typewheel and paper the lsprings e* are pushed back by the roller 7a4, so that only that portion of the inking-ribbon u* which is in contact with the type to be printed is pressed by the roller T as it is brought forward by the continued forward motion of the parts, as already deseribed. During the latter half of the revolution of the drum 0 the motion of the lever I is reversed, turning the spindle F in a reverse direction, and when the spindle reaches the point at which the latch b was withdrawn from the collar G the reverse movement of the mechanism required to withdraw the latch returns it to its position in the collar, so that the collar is engaged by the latch, and the type-wheel, simultaneously released by the spring m, is returned to the point of starting. The spring n?. contracts as soon as the collar n is relieved of the pressure of the arm j', as the rod q then drops partly by the action of gravity and partly by the pressure of the pins n. n, projecting from the spring m. The release of the brakespring mis effected by the withdrawal of the front end of the bar j from the collar, the pressure. of the pins n n, projecting from the spring m, upon the sides of the head s being sufficient to force the heads frombetween the pins, and thus allow the spring m to contract. The reverse movement of the printing-lever carries the printing-roller away from the typewheel and releases the springs et, so that both the paper and the ink-ribbon are removed from the face of the wheel before the wheel is re-engaged for its return. Before escapement is released and the leverI set in motion the cam-lever o5 is kept out of engagement with4 the rack-bart1 by the lever, so that the rack-bar is free to move; but the first movement of the lever I releases the cam-lever o,

allowing it to grip the rack-bar r and hold it until the return of the lever I to the point of starting. Thus, although the finger maybe slipped from the key before the work it has initiated is completed, the rack-bar o cannot stir until the rei-engagement ofthe type-wheel is effected and all the po-wermoved parts have returned to the position of rest. Then IOC.

IIO

it is desired to employ a capital letter, the capitalizing-key G' is depressed, carrying up -the type-wheel and bringing the row of capital letters into position for printing. Theindependent spacing is etleeted by depressing the key-lever l) in the manner already described. The spring L is wound from time to time by hand or continuously by power, and the power thus furnished is employed in effecting the movement of the typewheel and the press action, thereby reducing the work ofthe keys mainly to releasing the escapeineiit. At the end of tlieliiie or at any other time when the machine is at'rest (the pawls being then normally detached from the iatclietbar f3) the papercarriage may he easily moved back to the point of starting or forward at will. The line-spacingis effected by means of alever pivoted to oneof the arms zo j or the paper-carriage, and carrying a springacted pawl i'", arranged to engage the ratchet ufl, secured tothe shaft ot the roller T. The pawl t is provided with an arm fc5, by which the pawl ina-y be disengaged from the ratchet u. when desirable. The lever is provided with a forked arm m5, which extends down the side of the arm f4 upon opposite sides ol an adjustable stud rrr, the arms of the fork being iliade divergent, so that the movements ot` the lever may be variously limited by the position ot the stud in the fork irl. On moving the stud downward toward the wider end of the fork the lever S5 will be movable through a greater are and the spacing between the lilies made wider than when the stud is nearer the pivot of the lever. 'hen it is desirous to rapidly advance the paper by the rollers 7c" T, the milled head y, secured to one of the axles ofthe rollers T, is turned. To reverse the paper movement, the scale-bar in;l is lifted and the milled head turned in the opposite direction.

It will be observed that the rim ot the typewheel is supported from within by the turret at the :instant of printing, so that no strain is put upon the wheel or spindle. This construction permits of the employment of a very light typewheel having little inertia.

By the use of a diivingspring between the motive power and printing mechanism I am enabled to secure a quick action ot' the said mechanism.

The adjustment of the lever R to accommodate different thicknesses of paper or several thicknesses and to regulate strength of the impression is arranged so that the greatest leverage is secured when the strongest impression is required.

The arrangement of the pa per-carriage with the sliding rock-shaft and an actuating-lever journaled in Iixed supports and receiving the sliding rock-shaft in the manner described permits of effecting the printing movement by the oscillation of the paper-carrying roll of the paper-carriage without obstructing the path of the paper or interfering with the use of carbonized sheets for manitolding.

llaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The combination, in a type-writer, of a spindle having a reciprocating rotary motion, an oscillatory type-wheel loosely mounted on the spindle, and means, substantially as herein shown and described,for disengagingthe typewheel from the spindle at anytime in the rotation ot the spindle and re-engaging the type-wlieel on the return of the spindle to the point of disengagement.

2. In a type-writing machine, the combination of a spindle having a reciprocating rotary motion, an oscillatory type-wheel mounted loosely on the spindle, means, siibstan tially as described, for engaging the type-wheel d nring a portion ot or the whole of a revolution ot' the spindle and disengagiiig the type-wheel during any further rotation ot' the spindle, and brake mechanism, substantially as described, for arresting the motion of the typewheel when disengaged from the spindle, substantially as shown and described.

3. The combination, in a type-writiiig inachine, of a type-wliee1carrying spindle provided witli a pinion and an oscillating lever furnished with a toothed sector adapted to engage the pinion of the type-wheel-carrying spindle, the power-driven crank and a rod connecting the crank with the oscillating lcver, and an escapeineiit for securing the releasing and stopping of the crank at the beginning and end of each revolution, substantiall y as shown and described.

et. In a type-writing machine, the combina tion, with the oscillatory type-wheel-operatin g lever, of a hollow drinn mounted looselyon a power-driven shaft, a spring connect-iiig the drum with the shaft, an escapement for permitting successive isolated revolutions of the drum, and mechanism, substantially as described, intermediate between the drum and the oscillating type-wheel-actuating lever.

5. In a type-writing machine, the combination of the spindle F, arranged to rotate alternately in opposite directions, and the sleeve G, mounted loosely on the spindle, the typewheel Il', carried by the sleeve and provided with rows of type or characters, the latch b',

pivoted in the spindle and adapted to engage the sleeve G during a part or the whole of a revolution, the capitalizing-key Gr', and intermediate devices, substantially as described, for shifting vthe position of the sleeve G and type-wheel Il, substantially as shown and described.

G. The coinbinatioii,with the type-wlieel 1I, having a downwardly-projecting rim, of the turret C, grooved circumferentially near its upper end, a slit annular spring m, placed in the groove of the turret, and means, substaiitially as described, for expanding the slit spring against the inner surface of the rim of the type-wheel, substantially as shown aiid described.

TOO

IIO

7. In a type-writing machine, the combination, with the rotating typewheel, the circumferentially-grooved turret C, and the spring m, provided with inwardly-projecting pins n, of the rod q, having a wedge-shaped head, and means, substantially as described, for moving the rod q upward and bringing the wedge-shaped head into engagement with the pins of the annular spring.

8. In a typewriter, the combination, with the brake-spring 1n, of the type-wheel brakeoperating rod q, provided with the nut t, mounted on the threaded portion of the rod, the spring` u, suspended from the nut and surrounding the rod, the collar o, attached to the free end ofthe spring u and surrounding the rod q, forming a yielding contact for the rod-operating arm, and means, substantially as described, for moving the collar r, substantially as shown and described.

9. In a type-writing machine, the combination ofthe type-wheel ll, the spindle F, provided with longitudinal slots a 7L, arranged at right angles with each other, the latch Z1', pivoted in the slot c and provided with an offset slot d, the circumferentially-grooved collar f surrounding the spindle and provided with the Vpin g', passing through the sloth ofthe spindle and through the slot d of the latch b', the armj, encircling' the collar f', and provided with a forked end loosely embracing the rod q, the rod k', supported parallel with the spindle, the spirallygrooved shaft p', swiveled to the rod 7c', the pinion t, provided with the pin u, entering the spiral groove of the shaft p', and the pinion n on the spindle F, arranged to mesh with the pinion t', substantially as shown, and described.

]O. In atype-writing machine, the combination et the slit spring m, provided with the pins n, the rod q, provided with the Wedgeshaped head s, the nut t, spring u, and collar fu, the arm j, the rod k', carrying the arm,the spirallygrooved shaft p', the pinion t', provided with the pin n', projecting into the groove of the shaft, the pinion n', engaging the pinion t', the spindle F, the rotating typewheel, and mechanism for imparting alternate rotary motions to the spindle F, substantially as shown and described.

Il. In a type-writing machine, the combination, with the rod 7c', the spirally-grooved shaft p', and the pinion t', provided with the pin u', projecting into the spiral groove of the shaft p', of the elongated pinion q, attached to or formed on the shaft p', the spring-retracted rack-bar c, the connectingwire c, the swinging bar j, the series of keyleve'rs c, and the type-wheel having rows ot type or characters, spindle F, and means, substantially as set forth, for operating said spindie, substantially as shown and described.

l2. In a power-driven type-writing machine, the combination, with the ratchet-barl f3, the powenactuated oscillatingplever I, the

arm 0', carried thereby, andV the connectingrod r, and spring-actuated crank-wheel o, of the spring-acted pawl qi, arranged to engage the ratchet-bar, substantially as shown and described.

1.3. The combination, with the ratchet-bar f3 and bent pawl g3, arranged to engage the ratchet-bar, and means, substantially as described, for reciprocating the pawl, of the rock-shaft a3, provided with the finger t3, the arm ci, the notched bar 7L, conn ecting-rod, and the series of key-levers a, whereby the time of the disengagement of the pawl qfrom the ratchet-barf3 is varied according to the width of the letter to be printed, substantially as shown and described.

I4. The combination, with the lever I andthe arm p3, connected therewith, of the slotted lever R, the adjustable fulcrum-rod ai, the link ur", connecting the lever R and the arm p3, the sleeve g4, journaled in xed supports, the arm h5, carried by the sleeve and entering the slot of the lever R, and the grooved rockshaft S, journaled in the paper-carriage, the arms f '1, and the paper-roller T, substantially as described.

l5. The combination, with the paper-roller T, of the ratchet lui, the forked angled lever S5, pivoted to the arm f4 and provided with a hooked pawl for engaging the ratchet, and the adjustable stud 5v5, projecting from the arm f4 through the forked end of the lever s, substantially as shown and described.

16. The combination, with the paper-carriage Q and lever O, of an adjustable stud b5, carried by the ratchet-bar f3, the rock-shaft c5, journaled in the casing A and provided at its upper and lower ends with arms d5 e5, the arm d5 extending into the path of the stud b, an angled lever g5, pivoted to the head of the drum J, and a wire f5, connecting the arm e with the lever g5, substantially as described.

17. The combination, with the pinion of the type-wheel-shifting mechanism, of the rackbar c', the springacted eccentric-lever 05, and the oscillating lever I, the eccentric-lever extending into the path of the oscillating lever I, substantially as described.

18. In a power-driven type-writer, the combination, with a type-wheel and the impression devices acting in connection therewith, of a main driving-spring, an intermediate spring connected withand kept under tension by said mainspring, and mechanism connecting the said intermediate spring with the said type-wheel and impression devices, substantially as set forth.

19. In a type-writing machine, the combi` nation, with the printing mechanism, substantially as described, and a lever I for operating it, of the paper-carriage having a rock-shaft on which it slides, a lever R, operated by the lever I and connected with the said rock-shaft for rocking it, and an adjust` able fulcrum for said lever R, whereby its throw may be adjusted and rock-shaft rocked ICQ IIO

t0 :L greater o1l less degree thereby, Subsi'zml the rock-Shaft S, and the :um h,- zlinlaehed te tally as set forth. the Sleeve g, substantially :1S shown :md de- O. In a type-Writing machine, the eombiscribed.

nation, with the paper-carriage Q, of a roek- JAMES RICHARDSON.

shaft- S, movable with the paper-carriage and Witnesses:

rollelhplaten T, a centrally-ervanged sleeve GEO. M. HOPKINS,

g", jourunled in fired Supports and receiving' EDW. M. CLARK.

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