US594706A

US594706A - Type-writing machine

Info

Publication number: US594706A
Authority: US
Publication date: 1897-11-30
Anticipated expiration: 1914-11-30

Description

(No Model.) 3 .Sheets-Sheet 1,

W. J. PERKINS.

. vTYPE WRITING MACHINE. No. 594,706. PatentedNov. 30, 1897.

(No Model.) I 3 Sheets-Sheet; 2.

W. J. PERKINS. Y

TYPE WRITING MACHINE. No. 594,706. Patented Nov. 30,1897.

.o @QM (No ModeL)` Rib "Nrrnn" STATES PATENT union.

VILLIS J. PERKINS, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO Tl-IE SMITH PREMIER TYPEWRITER COMPANY, OF

SYRAOUSE, NEW YORK.

TYPE-WRlTmo MAcHlNE.

SPECIFICATION forming part of Letters Patent No. 594,706, dated November 30,' 1897.

Original application filed J nly 24, 1886, Serial No. 208,966. Divided and this application led July Z8, 1892. Serial No.

- 441,530. N model.)

To all whom it may concern.-

Be it known that I, WILLIS J. PERKINS, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Type-Writers, of which the following is aspec'ication, reference being had therein to the accompanying drawings.

This invention relates to type-writing ma- 1o chines, and especially to the ribbon mechanism thereof.

The object of the invention is to shift the inking-ribbon automatically and uniformly; also to improve the construction and combination of parts relating to the ink-ribbon mechanism. A

This application is a division of original application, Serial No. 208,966, filed July 24, 1886, and the other division ofwhich was patzo ented April 28, 1895, No. 587,998. In the original application it was stated that parts were omitted in many of the figures and parts Were shown broken, and in some instances ,only the position of a part was indicated. The

2 5 same is true of this division of said application. It should be understood that I expect to avail myself of usual and known constructions in this and analogous arts and of the expert skill of mechanics in the carrying out of my 3o invention according to the general principles thereof. Figure 1 is an edge plan of the ribbon-reels and driving and shifting mechanism. Fig. la is a partial section of the same. Fig. 2 is 3 5 an elevation of the ink-ribbon-shifting mechanism; Fig. 8, a partial end elevation of a portion of the ink-ribbon-shifting apparatus, part of the frame and paper-'roll being shown in section; Fig. 4, a detail of ink-ribbon-shift- 4o ing apparatus on line o 0, Fig. l; Fig. 5, an elevation of mechanism for shifting pawls of inking-ribbon. Fig. G is a plan of the ribbonshifting mechanism. Fig. 7 is a diagrammatic perspective illustrating the general arrangement of the ribbon-reels with reference to their supporting-axles; Fig. 8, a partial elevation of portion of ribbon-shifting apparatus; Fig. 9, a partial detail showing ribbon and supports and paper-roll in perspective.

The mechanism for automatically and continuously shifting the type-inking ribbon, so that the wear on the same and the color furnished to the paper may be uniform, is as p The inking-ribbon is made to unwind itself from one drum or spool and wind upon another, and reverse this movement automatically as soon asv it shall have completed its travel. It is also shifted laterally across'the plane of impression of the type on the paper. 6o (See Figs. 8, 7, and 8.)

Two spools or reels x are made of a width to receive an inking-ribbon of usual character. These reels are splined to shafts 0c m', suitably supported in the frame of themachine, so as to rotate with the shafts, but are free to slide longitudinally thereon. x2 and :1:4 are gears on these shafts, having an intermediate x3. This train of gears causes the shafts and reels to rotate in unison. Gears 002 and 7o @c3 have pawls m13 and 001.4 engaging therewith, so that when the pawls are suitably actuated the gears may be turned. The pawls x13, and m14 are pivoted to a lever x19 at equal distances from the pivoted center of said lever. The lever w'is attached to the spacing-lever h3 by a pitman connection x21. Thus when the spacing-lever moves,the pawl-actuating lever x19 is also turned slightly about its pivot, and one of the pawls x13 and x14 is raised, while 8o the other is depressed. (See Figs. 2, 5, andV 6.) Thus whichever pawl is in engagement with the wheels zand x3 serves to actuate the train of gears and unwind the ink-ribbon a little distance from one reel onto the other. 8 5 On the side of the gear x2 is a pivoted pawl or fly m26, and on the side of gear x3 there is a pivotal pawl x27, a pin at each side of each pawl or fly limiting its movement in either dIeCtiOn. 9o

When the wheel :n2 is rotated in the direction of arrow x32, Fig. 2, the pawl or fly m26 will not engage the teeth on spaced gearwheel x9 by reason of the location of the pawl m26 and its pins with the relation to the teeth 95 of said wheel, which is mounted on the shaft co7, as shown. Thewpawl m27, however, moving in the direction of arrow 5033, Fig. 2, engages one tooth on the spaced gear-wheel x9 and rotates said wheel one space. roo

The spaced gear-wheelw1 has sixteen teeth, as shown. The gears Q52 and 0:3 (and the ribbon-reels) Will thus make sixteen revolutions to one revolution of the spaced gear :1;9.

The shaft x1, to Which 'the spaced gear mi is keyed, bears also the single-toothed gear x25, which single-tooth Wheel w25 engages a sixtooth gear m21, which is fastened to shaft :1:29, Which bears the six-sided race-cam m11. As the sides or operating-faces of the cam agree with the number of cogs on gear 0021 it is apparent that when the wheel 902'* is shifted one space one of the cam-faces on cam m11 makes a complete stroke or impulse. This cam-plate w11 has a pin or roller ai moving in its race- Way, which pin or roller is connected to a slide-bar m12.

The bar x12 slides in bearings and is connected to pawl :L11 at one end by a pitman-rod x16. This pitman has a slot in the end in which a pin on pawl :r11 rests. The pawl is held toward the pitm an by spring w18. A similar connection of pawl x13 to the other end of the slide-rod m12 is made by means of slotted pitman 0015 and spring x11. The shifting of the slide-bar m12 by means of the race-cam w11 thus shifts the pawls U13 and x11, one being thrown out of gear with its pinion whenever the other is thrown in.

To prevent the possibility of pawls m13 and 014 becoming locked on a dead-center, so that vneither one shall engage its gear-Wheel, there is a ratchet-Wheel 0010 on shaft a'7 and a pawl :1620 on lever 0019 engaging said ratchet-wheel m10. The ratchet-Wheel 0010 has teeth only on a part of its surface, the remainder of its periphery being smooth. The teeth on the ratchet-Wheel correspond With the point of engagement of the single-tooth gear with the six-tooth gear 0321, this being the shiftingpoint of the slide-bar 0012. Should the racecam therefore fail to make a complete shift of the slide-bar and its pawls, this positive ratchet engagement will complete the movement-that is, the lever 0011 being positively driven will positively move pawl 1320. Then pawl 0020 is in engagement with the toothed portion of Wheel w10, it will rotate such Wheel and with it the shaft x7 and of course the train connected with such shaft, thereby insuring the movement of the race-cam and connections, but When the paWl :1:20 engages the smooth face of the wheel 0:10 ithas a mere lost motion and no propulsive effect.

By the mechanism made in the proportions described each movement of the lever h3, which is connected to the key mechanism, causes a movement of the ribbon-reels. Sixteen revolutions of one of the gears x2 or Q03 causes one revolution of the wheel m, and this shifts the race-cam one space through the mechanism described, thus throwing the opposite pawl of the two pawls 0013 and m11) into engagement and reversing the movement of the ribbon. Of course other convenient proportions of the mechanism may be adopted. Thus the traveling of the ribbon back and pivot of lever x1.

forth from one reel to the other under the impulse of the key mechanism is quite automatic.

The transverse shifting of the ribbon is effected b v means of a face-cam m8, which is loose on shaft es', the face-cam being attached to gear Q05, which is actuated by the one-tooth gear fr on shaft x7. The cam-face of cam m8 is divided by a series of radial notches. The rod m22, which is drawn endwisc by a spring 5021, has a bent arm :1323, which extends partly across the face of face-cam Q38, so as to lie in one of the grooves when the cam is at rest. The rod m22 has a pin bearing against the :forked rockerarm x28, the rocker-arm being' connected to rock-shaft 0031 and its fork engaging a groove in the periphery of the hub n30 of reel at. The rock-shaft 0031, Fig. l, is connected to rockerarm m23, and the other end of said bar is connected to a similar arm engaging a groove in the hub of the other reel 0c, so that the two reels are shifted simultaneously. Then the spaced gear x11 has made one revolution, the gear al" engages gear and turns it as far as the distance between the grooves in its face. This shifts the bar 5022 lengthwise and so slides the reels m a; lengthwise on their shafts fn a," by the mechanism heretofore explained.

It will be noticed that the pawl m13 Works on the downstroke, while pawl m11 Works on the upstroke, but on the opposite side of the Thus Whichever pawl is in operative connection gives its impulse to the ribbon after the printing has been done.

The inking-ribbon am" is supported on a plate m35, (see Fig. 3,) which plate x35 has a slot in it, permitting the type to strike through the slot toward the paper-roll a.

It will be understood that many of the figures of the illustration are diagrammatic, the machine-frame and supports being intentionally omitted for convenience of illustration.

It is evident that slight changes may be made from the form shown and described without departing from the spirit of the invcntion; also, that the substitution of an equivalent, as a Weight for a spring or one form of gear or lever for another, is within the scope of the invention.

No broad claim is made herein to an automatic shifter operating to shift the ribbon laterally during the travel of the carriage, but the combinations of mechanisms hereinafter claimed are believed to be new, and the mechanical structures involved are also intended to cover equivalents.

I claiml. In a type-Writing machine, the ribbonspools and supports therefor, means for moving the ribbon longitudinally from one spool to the other, a rotating cam and connections therefrom to the ribbon-spools by which said spools are moved to carry the ribbon laterally, and a spring acting on said spools against the force of the cam.

2. The combination, in a type-Writing machine, of ribbon-supports and means for Wind- ICO IIO

ing the ribbon thereon, an inclined bearingsurface and connections from an operative part of the machine to move said surface and thereby shift the ribbon sidewise, and a spring operating against the force of said inclined surface to press the ribbon in opposite direction.

3. In a type-writing machine, the ribbon, two spools on which the ribbon is supported, means for rotating these spools to traverse the ribbon longitudinally and means for automatically traversing the spools independently of their supports to move the ribbon laterally in a plane parallel with the face of the type when in printing position.

4. In a type-Writing machine, the combination of the hiking-ribbon and its supportingspools, means for Winding the ribbon longitudinally on said spools and for automatically reversing the movement thereof, and mechanism for automatically shifting the ribbon laterally and reversing such lateral movement, all substantially as described.

5. In a type-Writing machine, the inkingribbon and its supports and means for moving the ribbon in the direction of its length and for reversing this movement automatically, and means for traversing the ribbon in the direction of its width, and for reversing this movement automatically, all combined substantially as described.

6. In a type-Writing machine, the inkingribbon and its supports, means for feeding the ribbon longitudinally with a series of impulses, means for automatically moving the ribbon sideivise for a determined distance, and means for reversing the lengthwise movement, substantially as described.

7. ln a type- Writing machine, the inkingribbon and supports, and a train of drivinggears automatically operated from a moving part of the machine, said train comprising within itself a reversing mechanism for traversing the ribbon lengthwise a determinable distance and then automatically reversing this lengthwise movement, substantially as described.

S. In a type-Writing machine, the ribbonspools and their supports and a positivelydriven train of mechanism comprising Within itself a motor part which at a determinable interval reverses the rotary movement of said spools, in combination substantially as described.

9. In a type-Writing machine, the ribbonsupporting reels, a rock-shaft having arms connected to both reels, and means for rocking said shaft automatically to automatically shift said reels in the direction of their length, substantially as described.

10. In a type-writin g machine, the reel-supporting shafts and means for positively driving both shafts simultaneously, reels supported on said shafts and a train of mechanism by Which both reel-shafts are positively driven, all combined.

11. In a type-Writing machine, the combimay be rotated, and a lever connected to the driving-ratchets of both reels, whereby both may be driven and the movement of both positively reversed simultaneously, substantially as described. v

14. In a type-Writing machine, the ribboni winding reels both positively rotated simultaneously, a train of lever mechanism, and pawls operated by the lever mechanism to positively reverse the rotation of the winding-reels, all combined substantially as described.

15. In a type-Writing machine the ribbonreels ratchet-wheels connected to said reels, a lever having pawls operatively engaging said ratchet- Wheelsv and variable driving mechanism operating on said paWls to shift them simultaneously and thereby reverse the rotary movement of the reels, all combined substantially as described.

16. In a type-Writing machine, the ribbonspools and their supports, a rock-shaft and means for oscillating the same automatically, and arms from the rock-shaft connecting to ICO the ribbon-spools to shift them in the direcp tion of their length, and simultaneously, substantially as described.

17. In a type-Writing machine, the ribbonspools, the ratchet-wheels connected thereto and the pawls engaging said Wheels, the lever by which said paWls are operated, and the intermittingly-rotating shifter forming part of the driving-train and connected to the paWls, whereby they are alternately engaged and disengaged and by which the direction of movement of the reels is controlled, all combined substantially as described.

1S. In a type-writin g machine, the ribbonspools and drivin g-gear for rotating thesame positively, a mutilated gear-Wheel engaging said driving-gear to rotate the spools intermittingly, and means connected to the operative parts of the machine for rotating said mutilated gear, all combined substantially as described.

19. The combination in a type-Writing machine, of an inking-ribbon, longitudinally- Winding mechanism therefor, means for automatically reversing the longitudinal movement, and an automatic lateral-shiftin g mechanism for the ribbon, substantially as described.

20. The combination in a type-Writing ma- IIO chine, of an inking-ribbon and ribbon-supports and longitudinal-feed mechanism, automatic reversing mechanism, and a mechanism for automatically shifting the ribbon sidewise, substantially as described.

21. In a type-Writing machine, a ribbon, ribbon supports, and variable automatic means for moving the ribbon lengthwise from one support to the other, combined with mechanisin for automatically shifting the ribbon laterally, so as to use the ribbon in parallel longitudinal lilies.

22. Means for moving the ribbon length- Wise and for reversing said movement, and means for shifting the ribbon sidewise, operatively connected to the train of mechanism for moving the ribbon lengthwise, whereby the lengthwise travel of the ribbon may be reversed, and the ribbon also moved sidewise, to present parallel lines of Working surface. In testimony whereof I affix my signature in presence of two Witnesses.

VILLIS J. PERKINS. lVitnesses:

W A. BAnrLET'r, S. BnAsHnARs.