US1211147A - Type-writer. - Google Patents

Description

S. A. HARRINGTON.

TYPE WRITER.

APPUCATION mu) v1.2 1. 19:5.

1,21 1,147. Patented Jan. 2, 1917.

5 SHEETS-SHEET I.

S. A. HARRINGTON.

TYPE WRITER.

APPLICATION HLED APR.2l.1915.

1.21 1,147. Patented Jan. 2,1917.

5 SHEETS-SHEET 2.

illlllll lfwll R S. A. HARRINGTON.

TYPE WRHER.

APPLICAUON FILED APR-2|. 1915.

Patented Jan. 2, 1917.

5 SHEETSSHEET 3.

S. A. HARRINGTON.

TYPE WRITER.

APPLICATION men APILZI. I915.

1,21 1.147. Patented Jan. 2,1917.

5 SHEETS-SHEET 4.

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TYPE wmm APPLICAHDN {H.EU KPH-21y l9l5.

1,21 1,147. Ratented Jan. 2,1917.

SAMUEL ADRIAN HARRINGTON, OF RICHMOND, VIRGINIA.

TYPE-WRITER.

Application filed April 21, 1915.

To all whom it may concern Be it known that I, SAMUEL A. HARRING- 'IUN, a citizen of the United States, residing at Richmond, in the county of Ilcnrico and State of Virginia, ha vc invented certain new and useful Improvements in ,lype-\\"ritcrs; and l pereby declare that the following is a full, c ear, and exact description thereo'l', reference being had to the accompanying drawings. which form part of this specifica tiou.

This invention relates to typewritinp' machines in which the paper is carried n a printing roller i'nountcd in a carriage which moves across the machine during the operation of printing a line and at the end of the operation the roller is given a turn suiticient to space for a new line while the can riage is returned to its initial starting position.

In typewriting machines as ordinarily constructed the-printing roller is turned the space of a line or several spaces, as desired, by means of a lever pivoted on the carriage and having one arm arranged within easy reach of the operator and the other arm engagged with a ratchet on the printing roller so that when the lever is tilted by the hand of the operator the paper roller will be turned sullieiently to space for the next line and release the feed mechanism to permit the carriage to he shifted and restored to its initial position for starting: another line by exerting pressure against the free end of the lever in the direction in which it is desired to move the carriage.

It has heretofore been proposed to provide means for spacing and shifting the carriage to initial or starting position 'by means of a foot lever and intermediate connections between the same and the. movable carriage without requiring the removal of the hands 'of the operator from the keyboard, but such means have proven more or less unsatisfactory in practical use; and the prio ry object of my invention is to provide a'siniple, etlicient and inexpensive carriage shifting and line spacing mechanism, 'together with a trcadle or equivalent means to be actuated by the foot of the operator, so that when the treadlc is depressed the carriage will be automatically restored to initial position and at the same time the paper roller will be turned sufficiently to space for the next line; the connections be- Speclfication of Letters Patent.

Patented Jan. 2, 191 7.

Serial No. 22,827.

tween the carriage and tdadlc being such that a very slight movement,of the trcadlc will effect the desired moventent of the car riagc.

Another object is to provide a footdev er aml coiiperating means for accelerating the movement ol the platen or paper roll when desired to insert the paper. as at the be ginning. of an operation, or for the purpose of removiup the paper at the completion of a line, or at the end of a page, instead of turning the platen by hand as in machines as heretofore constructed.

'lhe invention will first be hereinafter more particularly described. with reference to the aecom mnying drawings. which are to be taken as a part of this specification, and then pointed out in the claims at the end of the description.

In said drawings, illustrating a preferred form of embodiment of my invention, Figure 1 is a diagrammatic plan view of a t \'pe\vriter with my .lll'lPlOVBlllOlltS applied thereto. showing the carriage in the position it occupies at the end of a line; Fig.2 is a rear elevation of the same; Fig. 3 is a detail per spective view of the line spacing mechanism, showing the actuating lever and connections in position for effecting the return movement of the carriage by continued pressure upon the foot. lever or treadle after the paper roll has been turned the space of a line; also showing in separated relation cer tain parts used for adjusting the line spacing device. to cause the paper roll to space one. two or more lines, as desired; Fig. 4 is a detail transverse section on a slightly enlarged scale taken on the line 4-4 of Fig. 1, howing the means for imparting a quick movement to the platen or paper roll for inserting or removing the paper at the beginning of an opcr ion or at the completion of a line; Fig. 5 is a detail sectional view of the take-up drums arranged between the foot lever and the line. spacing and platen accelerating devices; Fig. 6 is a side view of one of the drums shown in Fig. 5,'portions thereof being broken away; Fig. 7 is a diagrammatic side elevation of the typewriter equipped with my improvements, showing the connections with an operating and controlling foot-leve r or treadle; Fig. 8 is a bottom plan view of the forward end of the treadle; Fig. 9 is a detail sectional view, on an enlarged scale, of the forward end of the I'll - is secured the usual spacing ratchet wheel C,

treadle, showing the selective device for throwing into action the devices for imparting a quick movement to the platen or paper roll; Fig. 10 is a diagrammatic lan view of a portion of a typewriter wit my improved line-spacing and laten acoelerating devices ap lied thereto, iilustrating a modification o the actuating levers shown in Fig. 1; and Fig. 11 is a perspective view of the actuating levers shown in Fig. 10 mounted on a detached portion of the machine frame.

In the accompanying drawings, in which my improvement is shown applied to a typewriting machine of the well-known Remington type and in which the same reference letters are used to denote corresponding parts in different views, the letter A may denote the frame of the typewriter, which may be of the form shown or other com structionsuch as ordinarily used in type-- writing machines, according to the type of machine to which the improvement is applied; said frame having mounted thereon the usual carriage carrying a paper roll or platen and movable back and forth across the machine frame in the usual manner of operating typewriters as ordinarily constructed. In Fig. l the carriage is shown at the limit ofits forward movement, inposition for the line-spacing and carriage return mechanism to be actuated for spacing a line and returning the carriage to its initial or starting position.

The letter B denotes the paper roll or platen, to the shaft 13 of which, at one end,

and its actuating lever C, carrying a pawl c, which is held normally out of engagement with the teeth of the ratchet by a pin 0 engaging a cam-faced lug 0 on the backward movement of the lever, and dropping into a notch at the rear of said lug. But upon the forward moijement of the lever the pawl will engage a tooth of the ratchet and turn the platen sufliciently to space a line or lines, as desired, according to previous adjustment of the line spacin devices, which are shown in operative re ation in Fig. 1 and in separated relation in Fig. 3. The said line spacing devices include an adjustable stop lever C mounted loosely u on the shaft B} beside the lever C and he] in a fixed position upon the shaft by means of a spring pressed dog or catch 0 engaging one of a series of notches in a segmental plate C, which is also loosely mounted upon the shaft of the paper roll and adapted to be secured, in a fixed position by means of a set screw or bolt passing. through an are shaped slot 0 in the segment and into" a fixed portion of the carria frame, whereby the several parts of the line spacingdevice are assembled with provision for adjust ment so as to adapt them to turn the roll scribed, throu h which the space of bne or two or three lines, as desired, according to the notch in the segment which is enga ed by the sprin catch; the first notch in, he series being esi ed to space for one line only the interm notch for two lines, and the rearmost notch for three lines.

As will be seen, having properly adjusted the lever C, rearward movement of the lever C will cause the pin a to ride up the incline or cam face 0 on the lever C and lift the pawl 0 out of contact with the teeth of the ratchet, and upon further rearward movement of the lever C the in a will fall into the notch in the rear 0 the lug c and prevent further backward movement of the lever 0 and the pawl 0 being held out of engagement with the ratchet will permit free manual rotation of the platen roll in either direction, as usual in the operation of typewriting machines.

'ate.

As indicated in Fig. 3, the lever C has been thrown forward suliiciently to turn the laten the space of a line, such movement eing accomplished by means of a bell-crank lever D, pivotally supported on a standard D mounted upon the carria e, and having one arm connected with the rec end of the lever C by a link (i, while the other arm thereof is connected by a flexible band, cord or tape 1 to a drum E loosely mounted u on a shaft F which is supported in depending portions of the machine frame, as shown in Fig. 5 of the drawings. Upon the outer side of the drum E and preferably integral therewith concentric with its axis ratchet teeth 6 are provided for engagement with the pawl e which is pivotally supported 11 on the inner wall of a smaller drum 1 loosely mounted upon the hub portion of a stop G, which is adjustably secured on the shaft F by a set screw 9 so as to adapt said etc to be rotatively adjusted and secured in a fiired position at any desired point upon said shaft. The purpose of the stop G is to limit the rotary. movement of the drum E and also to provide a trip for the pawl e, and to this end the pawl c has a lug e pro ecting therefrom at an angle thereto to adapt it to be brought into contact with the stop G and lifted or thrown out of engagement with the ratchet teeth 6,. as shown in F ig. 6, and the pawl bein thus held clear of the ratchet teeth the rum E is free to rotate in the direction taken by the carriage on its forward movement unaffected by the drum E. To rotate the drum E and through it the drum E, a flexible band, cord or tape 1, having one end fastened to the drum E extends downwardly and has its other end secured to a foot-lever or treadle, to be presently demovement is imparted to the ine spacing and carriage return devices and to the devices, as hereinafterdescribed.

, 1s deemed unneeessa ry.

The rotation of the platen or paper roll for spacing purposes is limited by a stop (1 (Figs. 1 and 3) which is adjustably secured upon the standard D which supports the lever I), so that the throw of the lever may be varied to correspond with the adjustment f the line spacing devices when set for shifting the platen the space of one, two or three lines. As will be seen, a pull upon the cord or tape 1" will rotate the drum E in the direction indicated by the arrow in Fig. ll, thereby releasing the pawl c, which will be thrown, by pressure of the spring :1", into engagement with a tooth of the ratchet (2, thereby rotating the drum E and drawing out the tape 1, 1, causing the lever l) to rock upon its pivot and move the spacing lever srdliciently to rotate the platen the space of a line or lines, and at the end of such spacing movement the lever I) will contact with the stop (1 whereupon, the lever being held stationary by the stop, continued pull upon the tape will move the earriage across the machine frame and restore it to its initial or starting position, at which point the tension or pull upon the tape being removed, the actuating levers will be returned to their original or normal position by the action of a spring upon the usual hand-operated s iaeing and carriage returning lever X (Fig. 1) and intermediate con nections with the lever C including the coir necting red as, such as employed in typewriting machines in common use, so that further description of said hand-operated lever and its connections with the lever C The spring controlling the lever X has suflicient power to overcome any counter-acting force of the spiral spring within th drum E, the function of which is merely to take up slack in the tape or cord 1 or to keep the same taut. The cord or tape 1 is secured at one end to the outer periphery of the drum E, or a late ally projecting peripheral flange there on, and to the inner side of said flange is secured one end of a spiral spring E the other end of which is secured to the stationary shaft F on which the drum is loosely mounted, so that the tension of the spring is exerted in taking up any slack in the tape 1. By depressing the foot lever or treadle downward pull is exerted upon the tape 1, releasing the pawl e from engagement with the stop G, whereupon the pawl will be forced into engagement with a tooth of the ratchet e by pressure of a spring a thereon and as the drum E rotates it will impart rotary movement to the drum E in the same direction. The rotation of the drum E is opposed by a spiral spring E having one end secured to the inner Wall of the drum E and the other end secured to the hub portion of the adjustable stop G, as shown in Fig. 6. When the tension or pull upon the tape 1 is released it will be returned to normal position by the spring 1 1 and in this position the pawl 11 will be thrown out of engagement with the ratchet r!, by coir tact of the lug (1 with the stop (l, allowing free rotation of the drum E as the carriage travels across the machine drawing out the tape I.

For the purpose of actuating the line spacing and carriage return devices and also the platen accelerating devices by foot instead of by the hand of the operator, I provide a tool lever or treudl l. which is pivoted intermediate its ends on a support 1' arranged upon the floor in such position that the operator may conveniently depress the longer arm thereof with his foot and thereby exert a downward pull upon the tape which connects the free end of the lever with the druni' I l. But I will first describe what] termthe platen accelerating device, which is shown combined with the mechanism for actuating the line spacing and carriage return devices, but which is capable of use independently thereof, it desired, as will hereinafter more clearly appear. To this end i place upon the shaft ll of the paper roll a spur pinion K (Fig. 4)

which meshes with a large spur gear K, loosely mounted upon the hub screw /c which carries the ratchet actuating lever L, which in turn carries a pawl a pivoted thereto and adapted to engage the teeth of the larger gear K, when the lever 11 is thrown for- Ward and impart rotary movement thereto and through it rapidly rotate the pinion K, thereby imparting a quick rotary movement to the platen or paper roll of sulllrient dn ration to remove the paper at the end of a letter or line, or for the purpose of inserting a sheet of paper at the beginning of an operation. The lever L is connected by a link m with one arm of a bell-crank lever M, which is pivotally mounted on the machine fral'ne and to the other arm of which is secured one end of a flexible band, cord or tape :2, the other end of. which is secured to a drum H which is mounted beside the drum E, preferably on the same shaft, and is actuated by a pawl and ratchet connection with a smaller drum H in the same manner that the drums E and E are actuated: said drum H being connected with the actuating lever I by means of a cord or tape 2 and conneetions as hereinafter described. On the carriage frame is secured a segmental rack N, beside which is placed a stop-lever Which has a rearwardly projecting finger terminating in a laterally projecting lug 0 arranged in the path of movement of the lever L so as to serve as a stop to lilnit the rearward movement of the lever L by contact with said lug.

As the gear K is much larger than the pinion K with which it meshes its rotation will impart a quick movement to the paper roll due to the difi'erence in the diameters of the two gears. As in theicase of the line spacin devices when the'iever M contacts with tide stop m it will be held stationary against said stop and the pull on the tape 2 w1ll be transmitted to the carriage, thus returning it to normal or initial starting position in manner similar to that already described ith reference to the operation of the line spacing and carriage return devices actuated by the tape 1 and its connections with the foot lever or treadle I. The pull upon the lever M through the medium of the foot-lever and intermediate connections is opposed by the action of a spring P, which, upon the release of the tension or pull upon the tape 2, will return the lever M to its initial position, thus restoring the actuating lever L to its initial or starting position as determined by the position of theater 0 on the stop lever O with which it contactl.

Depending from and pivotally connected to the lower ends of the tapes 1 and 2, respectively are rods 1" and 2 which are slidably fitted within sleeves 1 and 2, rising from and each having a: swiveled connection at its lower end with the treadle I, to adapt it to serve as a guide for the rod and to tilt slightly when the foot lever is depressed, so as to insure free sliding movement of the rods within the sleeves; there bein suilicient clearance between the rods and t e inner walls of the sleeves to prevent frictional contact and impede or prevent free movement of the rods. These rods are heavy enou h to exert a slight pull on the tapes 1 an 2 just suflicient to keep them taut without turning the drums.

()n the under side of the treadle I is a keeper plate Q having depending apertured lugs g to receive and guide a sliding looking plate R; said plates also having apertures therein through which the rods 1" and 2 ass. On the underside of the lever I, and connecting it with a pendant arm of a tri suita le spring S which is also connected by a link t with the locking dog B so as to cause the latter to normal y grl the rod 1, in order that when the tree le is depressed while the trip lever T is undisturbed it will exert a all upon the tape 1 only for actuating t e line spacing and carriage return mechanisms; the tape 2 meanwhile being unaffected, by reason of the fact that the rod 2" slides freely through the tube 2 and the apertures in the keeper late and sliding do but when the trip ever T is de ressed Ey the foot of the operator, the siding dog R will move forward, disengaging the rod 1 and engaging the rod 2", and the foot lever being also depressed a pull will be exerted upon the lever T, is secured a coiled or other v illustrated a modification in which a plutape 2 and through it upon the drums H and H, and the tape 2 and its connections with the platen accelerating devices, thereby imparting a quick rotary movement to through the guide sleeve and treadle, thus permitting a downward pressure upon the treadle for the purpose of operating the platen accelerator without affecting the line spacing devices. \Vhen the pull upon the tape 2 is released the spring P will return the parts to normal position. At the same time, pressure upon the trip lever T being released, the spring S will draw the sliding dog R back, disengaging the rod 2 and engaging the rod 1?, so that the line spacing devices may be operated independently of or without affecting the platen accelerator. I thus provide simple and efficient means whereby the operator may select whichever mechanism he may desire to operate, for the purpose of actuating the platen, to impart a quick movement thereto, for the purposes stated, or the line spacing devices, either of which may be operated at will without interfering with the operation of the other, thus leaving it to the choice of the operator to impart an accelerated movement to the platen, for the purpose of inserting the aper on the paper roll at the beginning 0 an o eration,or for removing the paper there mm at the end of an operation, and the platen accelerating devices being thrown out of action, the line spacing devices will be brought into position for action without affecting the platen accelerator until it is desired to again operate the platen to quickly remove the paper or insert a new sheet. 1

In Figs. 10 and lljof the drawings I have It will be understood of course that va rious changes may be made in the details of construction and arrangementof arts without departing from the spirit and ope of my invention; hence I do not desire to be limited to the specific construction and arrangement illustrated and described. It should also be understood that the word tape" as used in the appended claims may include either a. chain, cord or other Suitable flexible connection between the drums and the line spacing and platen accelerating devices and between said drums and the foot lever or treadle.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent is:

1. The combination in a typewriter, of line spacing and carriage return devices and means for actuating the same by the foot of the operator, comprising a treadle, and flexible connections between said treadle and said devices, including a differential drum interposed in said connections and a spring for each drum element tending to turn it in a direction opposed to the action of the other spring, one spring adapted for taking up slack and holding said connections taut.

The combination in a typewriter. of line spacing and carriage return devices and means for actuating the same, con'iprising a treadle and intermediate flexible connections including a dilierential drum over which said conncctions pass, the larger and smaller drum elements being independently rotatable in opposite directions, and each having a spring acting thereon to turn it in a direction opposed to the action of the other spring, and means on one drum engaging means on the other for causing the two drums to rotate together in one direction only.

3. The combination in a typewriter, of line spacing and carriage return devices and means for actuating the same, comprising a. treadle and intermediate flexible connections including a differential drum over which said connections pass, the larger and smaller drum elements being indepemlently rotatable in opposite directions, each dram element having a spring acting thereon to turn it in a direction opposed to the action of the other spring, and means on one drum engaging means on the other for causing the two drums to rotate together in one direction only.

4. The combination in a typewriter, of line spacing and carriage return devices and means for actuating the same, comprising a foot lever, flexible connections between said lever and said devices, a. differential drum over which said connections pass, the larger and smaller drum elements being independently rotatable in opposite directions upon the same axis, and means on one drum engaging means on the other for causing the two drums to rotate together in one direc tion only, together with a spring acting on each drum element to turn it in a direction opposed to the action of the other spring; one spring tending to rotate the larger drum and hold said connections taut.

5. The combination in a typewriter, 01 line spacing and carriage return devices and means for actuating the same, comprising a foot lever, flexible connections between said lever and said devices, a differential drum over which said connections pass, the larger and smaller drum elem its being independently rotatable in opposite directions upon the same axis, and means on one drum engaging means on the other for causing the two drums to rotate together in one direo tion only, together with a spring acting on each drum element to turn it in a direction opposed to the action of the other spring; one spring tending to rotate the larger drum and hold said connections taut, and means carried by the smaller drum for engaging and imparting movement to the larger drmn in one direction only, together with means for releasing the engagement between the two drums and rotating the smaller drum to restore it to initial starting position.

(3. In a typewriter, line spacing devices,

and devices for imparting a rapid rotary movement to the paper roll, in combination with a ireadle. flexible connections between said line spacing devices and treadle, and between said paper roll accelerating devices and treadle, and means on said treadle whereby the operator may effect the desired line spacing or impart an accelerated movement to the platen by foot-pressure on said treadlc.

T. In a typewriter, the combination with line spacing devices, means for actuating said devices by the Foot of the operator, comprising a treadle. flexible connections between said treadlc and line spacing devices including a bell ciank lever. a link connecting one arm of said bell crank lever with a ratchet actuating lever, a tape connecting the other arm of said bell-crank lever with a drum loosely mounted on a shaft fixed in the machine frame, a spring having one end secured to said drum and the other end to said shaft and tending to hold said tape taut, smaller drum loosely mounted on said shaft beside the larger drum and a tape connecting said smaller drum with said ireadle; said smaller drmn carrying a pawl adapted to engage a. ratel'ict wheel on the larger drum, thereby causing the two drums to rotate in unison when the tr zadlc is depressed, and a spring for restoring said smaller drum to inltial position after actuating the larg r drum.

8. In a typewriter, the combination with line spacing devices, means for actuating said devices by the foot of the operator, comprising a treadle, flexible couimctions between said treadle and line spa" ng devices including a bell crank lever, 1 lim: connecting one arm of said bell crank lever with a ratchet actuating lever, a tape connecting the other arm of said bell-crank lever with a drum loosely mounted on a shaft fixed in the machine frame, a spring having one end secured to said drum and the other end to said shaft and tending to hold said tape taut, a smaller drum loosely mounted on saidshaft beside the larger drum and a. tape connecting said smaller drum with said treadle; said smaller drum carrying a pawl adapted to engage a ratchet wheel on the larger drum, thereby causing the two drums to rotate in unison when the treadle is depressed, and a spring for restoring said smaller drum to initial position after actuating the larger drum, together with means for limiting the movement of said smaller drum in a backward direction and disconnecting it with the larger drum.

9. In a typewriter, the combination with vline spacing devices, means for actuating said devices by the foot of the operator comprising a treadle, flexible connections between said devices and said treadle including a bell crank lever, a link connecting one arm of said lever with a ratchet-actuating lever, a tape connecting the other arm of saidlever with a drumloosely mounted on a shaft fixed in the machine frame, a spring ,tending to rotate said drum and tighten said tape, a smaller drum loosely mounted on said shaft beside the larger drum and carrying a pawl adapted to enga e a ratchet wheel on the larger drum, where y the two drums are caused to rotate in unison in one direction only, a spring tending to restore said smaller drum to normal position, and as top' for disengaging the pawl from the ratchet on the larger drum and limiting the movement of said smaller drum in a back ward direction.

1.0. In a typewriter machine, line spacing and carriage return devices comprising a ratchet wheel on the shaft of the paper roll, a ratchet-actuating lever carrying a pawl engaging said ratchet, a bell crank lever pivoted on the machine frame, a link connecting one arm of said lever with the ratchet-actuating lever, a stop limiting the throw of said bell crank lever so as to cause the carriage to move with the lever when the latter has rotated the platen the space of a line or lines, a foot lever, and flexible connections between said foot lever and said bell crank lever comprising a tape connecting said bell crank lever with a drum loosely mounted on a shaft fixed in the machine frame, a second tape connecting said foot lever with a smaller drum rotatably mounted on said shaft beside said larger drum, together with a spring tending to rotate the larger drum in a direction to keep the tape taut, and a second spring tending to rotate the smaller drum in an opposite direction to the force of the spring acting on the larger drum; said smaller drum carrying a pawl adapted to engage a ratchet wheel on the larger drum when the treadle is depressed and thereby impart rotary move ment to the larger drum, thus actuating the line spacing and carriage return devices.

11. In a typewriter, the combination with line spacing devices carried by the carriage, a foot-lever and intermediate connections for actuating said devices, mechanism on said carriage for imparting an accelerated movement to the platen or paper roll, and means on said foot lever whereby the operator may actuate either the line spacing devices or the platen accelerating mechanism at will; the line spacing devices being unaffected by actuating the platen accelerating mechanism, and vice versa.

12. In combination with the line spacing devices of a typewriter and devices for imparting an accelerated movement to the platen, a treadle and intermediate connections for actuating said line spacing devices and said platen accelerating devices; id connections including two tapes lead ng over drums to said treadle and devices car ried by the treadle normally in working connection with one tape for actuating one set of said devices and adapted to effect a working connection with the other tape for actuating the other set of said devices and simultaneously throw out of action the set of devices which are normally in working connection.

In testimony that I claim the foregoing as my own, I aflix my signature in presence of two witnesses.

SAMUEL ADRIAN HARRINGTON. Witnesses:

C. M. WIRIE, J r., WM. BUCHUREAU.

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