US1128571A - Type-writing machine. - Google Patents

Description

J. H. BARR.

TYPE WRITING MACHINE.

APPLICATION IILED APR.30,1914.

Patented Feb. 16, 1915.

4 SHEETS-SHEET 1.

INVENTEIR:

mum...

WITNESSES.-

J. H. BARR.

TYPE WRITING MACHINE. APPLICATION FILED APR.30,1914.

Patented Feb. 16, 1915.

4 SHEETS-11331 2.

M M M INVENTEIR= Jk/JW A %M EM HlsATTnRwg-v J. H. BARR.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 30.1914.

Patented Feb. 16, 1915.

4 SHEETS-SHEET 3 INVENTUR 3 04.. JV/w QAMLM 52M HISATTEIRNEY J. H. BARR. TYPE WRITING MACHINE.

APPLICATION FILED APR. 3Q 1931.

Patented Feb. 16. 1915.

4 SHEETSSHEEI' 4 HISATTDRNEV the features of construction, arrangements of STATES OFFICE JOHN H. BARR, OF NEW YORK, N. Y., ASSIGN'OR TO REMINGTON TYPEWRITEB COMPANY, OF ILION, NEW YORK, A. CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Applicat. fil- To all whom it may concern Be it known that 1, JOHN H. BARR, citizen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to ribbon mech anism therefor.

The objects of my invention, generally stated, are as follows :-(a) To provide ribbon feed and reversing mechanism which is effective in use and can be manufactured at small cost. (6) To provide improved autoinatically operating means for effecting a reversal in the direction of the feed of the ribbon without exerting strain on the ribbon.

(c) To provide simple and efiicient means for enabling the ribbon splools to be removed at will from the machine. (03) To provide a construction in which an actuation of the ribbon reversing devicesis positively effected and in which there is an assurance of a quick and effective operation of said devices. (6) To provide a construction in which the ribbon spools and ribbon feed and reversing means constitute separate mechanism which may be readily introduced as a wholeinto the machine or removed as awhole therefrom.

To the above and other ends which will hereinafter appear,'my invention consistsof parts and combinations of devices set forth in the following specificationand particw.

'my invention,.only so much of the typewriting machine being shown in this and the other views .as may be necessary to arrive at an understanding of m invention. Fig. 2 is a detail fragmentary ront elevat on show ing the means by which the ribbon is guided in passing from the spools to the vibrator.

'Fig,3 is an enlarged detail perspective view of: one of the ribbon guides. 4-is an en-. larged front elevation, partly in section, of the ribbon feed and reversing mechanism Specification of Letters Patent.

the

. Patented Feb. 16, 1915.

April 30, 1914. Serial No. 835,389.

and some of the associated arts. Fig.5is an enlarged inner side view of the same showing only those parts which are associated with the right-hand ribbon ,spool. Fig. 6 is an enlarged detail fragmentary perspective view of one of the reversing devices or frames and the controlling member carried thereby. Fig. 7 is an enlargeddetail perspective view of one ofthe actuating members which operates an associated feed pawl and reversing device. Fig. 8 is an enlarged detail vertical sectional view of the right-. hand spool and some of the associated parts, the section being taken fore and aft of the machine and centrally through the righthand driving shaft. Fig. 9 is an enlarged detail fragmentary front elevation of the a Fig. 10 is an enlarged detail fragmentary perspective view of the ribbon controlled controlling means associated with one of the ribbon spools and which determines when a reversal in the direction of the feed of the ribbon may be effected. Fig- 11 is an en?- larged detail side elevation with parts section of one of the ribbon spools, the driving shaft therefor and some of the associated members, the shaft being displaced from the spool to enable the latter to be removed from the machine. Fig. 12 is an enlarged detail perspective view of one of the holding pawls.

I have shown my invention embodied in resent instance in a front-strike type writing machine, although it should be understood that the invention isapplicable. to and may be embodied in other styles of machines.

The frame of the machine comprises a base 1, corner posts 2 and a top plate 3; -A

suitable carriage (not shown) is mounted on the top plate to .move over the same from side to side of the machine, being propelled in its feed movement by the usual spring drum and controlled in such movement by I suitable escapement mechanism, which escapement mechanism is controlled a universal barA through any suitable connections. The carriage carries a cylindrical platen 5 against the frontface of which upwardly. andrearwardly swinging type bars not shown) are adapted to strike- Alsuitableribbon vibrator 6 .isar'ra'nged in front of the platen at the printing point and through this vibrator is threaded a rib- 11. The threaded ends ofthese screws are received in tapped openings in a sheet metal bracket 12 secured by screws 13 to the top late of the machine. Each guide is formed with a depending arm 14 from which projects laterally an inclined guiding face or surface 15 situated beneath the foot piece 9 and inclined downwardly and outwardly toward the side of the machine. The forward edge of the guiding surface 15 is provided with upwardly extending ears 16 by -which the ribbon is prevented from accidentally mov mg .ribbon spool.

- nected to the type bars laterally and forwardly off the guide. From an inspection of Fig. 2 it will be seen that the upper inner end of each guide extends beyond the inner side of the opening -'n the top plate and that the ribbon overlies the guiding surface 15 and passes downwardly from the guide to the associated enables the ribbon to be shifted laterally into each guide when the ribbon is placed in the machine. Each guide may be readily removed from the machine by loosening the screws 11 and shifting the guide rearwardly; the open mouthed slots 10 enabling each guide to be removed without detaching the screws.

The key levers 17 are fulcrumed on a fulcrum bar 18 and extend to the keyboard where their are provided with the u ual finger keys 19. These key levers are returned by suitable springs and are oper-itively conor printing instrumentalities. Each depression of a' finger key .19 is effective, through its associated key lever 17, to actuate the universal bar =1 of the escapement in the usual manner.

Ribbon spools 20 and 21 are arranged at opposite sides of the machine and receive the ribbon thereon as it extends from the guides 8 in its passage from side to side of the machine. In Fig. 4 the right and lefthand spools and the ribbon feed and reversing mechanism therefor are illustrated, but in all of the remaining views which show the ribbon spool and the ssociated mechanism the right-hand spool a one and the parts associated therewith are shown.

Referring particularly to Figs. 1, 4, 5, 8 and 11, it will be understood that each of the ribbon spools and the associated ribbon feed and reversing devices constitute in a sense a separate unit-earned by a zbgacket This form of construction' abling the 22 secured by screws 23 to the base of the machine. The ribbon spools, ribbon feed and reversing devices therefor at both sides of the machine are alike and the description of onewill apply to the other, except that the parts at opposite sides of the machine are reversed. From an inspection of Figs. 8, 9 and 11 it will be understood that-the ribbon spool 20 is formed with sheet metal heads united by asheet metal core 24, the opposite edges of which are provided with projections 25 which extend through openings in the heads 26 of the spool and unite them. The edges of the core of the spool terminate at 27 (see Fig. 9) to provide an opening 28 in the core for purposes which will hereinafter more clearly appear. The core of each spool is also provided with tines 29 which are struck up from the body portion of the core and constitute engaging means for cooperation with an end of the ribbon to connect the ribbon with the spool.

The forward head 26 of each ribbon spool is also provided with spline projections 30 which are adapted to be received in oppositely disposed spline grooves 31 and 32 of an associated driving shaft 33 in order to cause the spool and shaft to turn together but to afford a longitudinal displacement of the. shaft independently of the spool. Each shaft 33 receives a bearing in the upwardly extending arms 34 and 35 of the associated bracket 22.

As will hereinafter more clearly appear, each shaft 33 is adapted to be displaced longitudinally from the position shown in Fig. 5 to that indicated in Fig. 11, thus disconnecting the shaft from the spool and enlatter to be removed from the machine. The construction and arrangement of the parts by which this longitudinal displacement of each shaft is aflorded and by which operative connection is maintained between each driving shaft and the devices by which it is turned, are as follows: Each bracket arm 34 receives in its bearing opening therein sleeve 36 formed with a circumferential flange 37 which co-acts with the bracket arm 31 to limit the movement of the sleeve in one direction. A coiled expansion spring 38surrounds each shaft 33 and bears at one end against the flange'37 and at its opposite end against an inwardlv extending flange of a sleeve 10. It will be seen that a shoulder 41 is formed on the shaft .where the reduced portion 4'2 joins the enlarged or body portion of the shaft. The inwardly projecting flange 39 is adapted to bear against the shoulder 41 under the-pres sure of the'spring 38 and to move the shaft rearwardly in its bearings to the normal position shown in Fig. 5. It will be understood that the sleeve 40 is loosely disposed e on the shaft 33 so that while said sleeve is,.-. veffective to move the shafttg its normal pps nevertheless the shaft may receive an independent longitudinal rearward displacement from its normal position shown in Fig. 5 to the position represented in Fig. 8. This movement of the shaft is operative to effect an actuation of the reversing devices as will hereinafter more clearly appear. A second shoulder 43 is formed on the driving shaft at the junction between the reduced portion 4.2 of the shaft and a further reduced portion 44 thereof. This circumfer ential shoulder 4-3 is adapted to bear against the face of the flange 37 of the sleeve 36, as shown in Fig. 11. The forward end of the shaft 33, where it is reduced at 44, has a crank arm 45 secured thereto by a headed screw 46 received at its threaded end in a tapped opening in the end of the shaft.

The shaft is flattened on the sides thereof,v

as indicated at 4:7 in Fig. 8, and the opening in the crank arm 45 is of corresponding:

shape to positively connect the crank arm to turn with the shaft. A finger piece 48 is connected to the free end of the crank arm to provide means by which the crank and the shaft to which it is connected may be rotated and by which either a forward or backward longitudinal movement of the shaft against the power of the spring 38 may be eflected at will. The forward displacement of the shaft is indicated in Fig. 11 and this affords a removal of the spool from the machine as'hereinbefore pointed out, whereas a rearward displacement of the shaft from the position shown in Fig. .5 to that indicated in Fig. 8, is operative to effect a reversal of the feed of the ribbon as will presently appear. It will be understoodthat the construction is such that the spring 38 tends to normally maintain the shaft in the central position, longitudinally considered and as represented in Fig. 5. When the shaft is moved forwardly as represented in Fig. 11 the sleeve 40 is carried with it and compresses the spring 38 between the flange 39 on the sleeve 40 and the flange 37 on the sleeve 36. The sleeve 36 being normally disposed in the position shown in Figs. 5 and 11, will, during a forward movement of the shaft, resist the action of the spring 38 and enable it to be compressed as represented in Fig. 11. When, however, the shaft is displaced rearwardlv from its normal position shown in Fig. 5 to the position represented in Fig. 8, the crank arm will co-act with the forward end of the sleeve 36 and will move said sleeve with the shaft against the force of the spring 38. At this time the sleeve 40 will remain at rest, the shaft moving independently thereof as will be understood from an inspection of Fig. 8. A single spring 38 therefore is effectlve to return its shaft 33 to the central normal position after alined it is shifted forwardly to the. position indicated in Fig. 11, or is shifted rearwardly to the position indicated in Fig. "8. v

The spline groove 31 of each shaft 33 extends rearwardly throughoutthe entire length of the enlarged portion thereof as 'Wlll be understood from an inspection of Figs. Sand 11, An actuating or feed device or ratchet wheel 49 for turning the associated driving shaft 33 isconnected to turn with the shaft but toaffordan independent longitudinal movement of the shaft by the following means: Each ratchet wheel 49 is received and secured on the reduced portion 50 of a hub 51 so as to fixedly connect the hub and ratchet wheel. The hub has an inwardly extendingispline projection 52 which is received in the spline groove 31 of the associated shaft 33. This spline connection between each shaft and its ratchet wheel 49 causes the two to turn together but enables the shaft to be displaced longitudinally in either direction independently of the ratchet wheel. A' movement 'of the ratchet wheel with the shaft, when the latter is moved longitudinally to the position shown in Fig. 8 is resisted by the bracket arm 35. Movement of the ratchet wheel with the shaft in the opposite direction is resisted in the following manner: A plate-like .member 53 forms part of a reversing frame or device, designated as a whole by the reference numeral 54, and which is shown in allel with the plate 53 so that the yoke-like portion is adapted to receive a ribbon spool between the parallel sides thereof, as clearly indicated in Fig. 8. From this figure it will be seen that the bifurcated portion 58 is rounded at 59 to form contact portions which are adapted to co-act with the rear head or flange of the ribbon spool to prevent the spool from being shifted rearwardly with the shaft when the latter is displaced longitudinally to the position represented in full lines in Fig. 8. It will be seen that the plate-like member 53 bears against one side of the bracket arm 35 so as to prevent a forward displacement of the plate 53 and the parts-carried thereby or connected therewith. The reversing frame or device also includes a second plate-like member 60 arranged parallel with the plate 53 and. like the latter, provided with an bearing opening 61 to receive the shaft 33. This plate is fixedly connected to the plate 53 by tie rods, shoulder rivets or pins 62,. 63 and 61 which are riveted to the plates 53 and 60 and fixedly unite them and maintain them spaced apart as represented in Figs. 6 and 8. rom the last mentioned figure it will be seen that the plate 60 contacts with the forward end of the hub 51 of the ratchet wheel, whereas the rear face of the ratchet wheel bears against the bracket arm 35. In this manner the reversing frame is mounted for pivotal movement around and independently of the driving shaft but is held against movement axially thereof and prevents a forward axial movement of the ratchet wheel 49 on its shaft. The sleeve 40 hereinbefore referred to hearing as it plate 60, is prevented'thereby from moving axially in one direction as when the shaft 33 is moved to the position shown in Fig. 8 independently of said sleeve 40. 1 Motion is transmitted to each ratchet wheel to turn the associated ribbon spool by 'the following means: A universal bar 65 is arranged transversely beneath the key levers and may be provided at its upper contact edge with cut-outs or depressions 66, as indicated in Fig. 4, in order that the same extent of movement may be given to the universal bar 65 by the key'levers of different lengths. If desired, certain of the key levers may responding to the projections on the upper edge of the universal bar and the universal bar may have a straight contact face on the upper edge-thereof for cooperation with the contacts on the key levers. The same effect would result with either form of construction. The universal bar 65 ,is preferably .made of sheet metal-and is angular in cross section as shown in Figs. 1 and 5. Forwardly projecting sheet metal arms 67 are connected to the universal bar and supported from a rock shaft 68. Thus it will be seen that each arm 67 is formed with a foot piece 69 by which the arm is connected to the universal bar by means of bolts 70 and ;nuts 71. The forward end of each arm 67 is apertured to receive the reduced end of a hub 72, which hub is fixedly connected by a pin 73 to the rock shaft 68 as shown-in Fig. 4 The reduced end of each hub 72 is flattened on opposite sides to fixedly connect each arm 67 and its hub 7 2 .to turn together. The opposite end of each hub 72 is reduced and flattened at the sides thereof as indicated at 71 in Fig. 5 for coiiperation with an apertured end of a crankarm 75 which extends forwardly from the rock shaft 68 There are. two arms .67 which connect the universal bar to the rock shaft 68, and there are two forwardly projecting arms 75 which extend from the rock shaft, as shown in Fig. 4. The rock shaft 68 is supported at its does at one end against the be provided with pro]ections cor ends on cone bearing screws 76 which are received in tapped openings-in the base 1 of the frame. Each crank arm 75 is pivotally connected at 77 to an upwardly extending sheet metal link 78. The upper end of each link is bent at right angles to the body portion thereof as will be understood from an inspection of Figs. 4 and 5;.the upper bent end of the link being indicated at 7 9. This bent end of each link is received between the parallel sides of a sheet metal actuating member, designated as a whole by the reference numeral 80, and is pivoted thereto at 81. One of the actuating members 80 is shown in detail in Fig. 7. From an inspection of this figure it will be seen that each actuating member comprises two side walls 82 between which the upper end of the actu ating link is received and that these side walls extend outwardly from the link and are arranged on opposite sides of a supporting arm 83 which projects from the associated bracket '22, a pivot 84: pivotally supporting the actuating member on the arm 83. It will also be seen that one of the side arms of the actuating member 80 is extended upwardly to form a crank arm 85 provided atthe upper end thereof with a segmental portion 86 formed with a rack or with ratchet teeth 87 thereon, for purposes which will hereinafter more clearly appear. A sheet metal feed pawl, designated as a whole by the reference numeral 88, is formed with two parallel members 89 united by a cross bar 90. The parallel members 89 are apertured to receive a pivot 91 by which the pawl is pivotally connected tothe associated actuating member 80. The upper end of the feed pawl is bent at right angles to the body portion thereof to provide an engaging nose 92 which cooperates with the associated ratchet wheel 49. Each feed pawl 88 is also provided with a finger 93 having a bent end portion 91 to which one end, of a contractile spring 95 is connected. The force of this I spring is exerted on the feed pawl to turn it on its pivot 91 and force the nose of the pawl into engagement with the teeth of the associated ratchet wheel 49, as shown in Figs. 4 and 9. a

It will be understood from the foregoing description that each depression of a finger key 19 is effective to depress the universal bar 65 of the ribbon feed mechanism. thereby turning the rock shaft 68 and effecting an upward movement of the links 78 and a. corresponding movement of the actuating devices 80 and the feed pawls 88 connected therewith.

From an inspection of Fig. 1' it will be seen that when one of the feed pawls 88 is in engagement with its cooperating ratchet wheel the feed pawl of the other ratchet wheel will be maintained out of engagement with its ratchet wheel,so that but one ratchet wheel at a time is turned and the ribbon is wound on one spool or the other, depending on which feed pawl is in engagement with its ratchet wheel. As shown in Fig. 4 the right-hand feed pawl 88 engages its ratchet wheel and the ribbon will therefore be wound on the right-hand ribbon spool 20.

Each ratchet wheel also has cooperating therewith a holding pawl, indicated as a whole by the reference numeral 98, and illus trated in detail in Fig. 12. Each holding pawl or dog is preferably made of sheet metal and is formed with an angularly disposed engaging nose 97. The heel of the pawl is double and is apeitured at 98 at the doubled portion'to receive a headed supporting pivotscrew 99 which is received at its threaded end in a tapped opening in the associated bracket arm 35. Each pawl 96 is also provided with an car 100 which is apertured for connection with the other end of the contractile spring 95 which is connected with the companion feed pawl 88. It will be understood that the holding pawl for each spool is maintained in engagement with the companion ratchet wheel whenthe associated feed pawl is operative on said wheel, as shown at the right-hand side of Fig. 4, whereas when a feed pawl is maintained out of engagement with its ratchet wheel the companion holding pawl 96 is also maintained out of engagement with its ratchet wheel, as illustrated at the left-hand side of Fig. 4.

I have provided hand actuated means for effecting a reversal in the direction of the feed of the ribbon by controlling the engagement between the feed and holding pawls with their respective ratchet wheels and for throwing the feed and holding pawls for one spool out of engagement with its ratchet wheel when the feed and holding pawls for the other spool are thrown into engagement with their ratchet wheel. Thus it will be understood that the -socalled reversing device or frame associated with each ribbon spool, and which is shown in detail in Fig. 6, is capable, as hereinbefore pointed out, of a rotative movement around the driving shaft 33 which supports it. This rotative movement of each of the reversing devices is effective to control the.

engagement between the actuating and holding pawls for the associated ribbon spool, as will be understood from an inspection of Fig. 4. Thus it will be seen that the pin or tie rod 64 carried'by the reversing device of the left-hand ribbon spool 00- acts with the feed pawl 88 at the left-hand side of Fig. 4- and maintains said pawl out of engagement with its ratchet wheel 49. It will also be observed that the pin or tie rod 62 carried by the same reversing device at this time co-acts with the holding pawl 96 of the left-hand ratchet wheel is such that the bell crank levers 109 are to hold it out of engagement with "said ratchet wheel. WVhen, however, the lefthand reversing device is shifted around the pivotal axis of its ribbon spool to a position corresponding to that indicated. at the righthand side of Fig. 4, then thepins 64- and 62 will be shifted out of engagement with the associated pawls 88 and 96, respectively; thus enabling these pawlsto engage the ratchet wheel, as shown at the right-hand side of Fig. 4. From an inspection of Fig. 6 it will be .seen that each pin 62 has an enlarged portion or collar 101 which is adapted to engage with the associated holding pawl 96. A two-part link, designated as a whole by the reference numeral 102 and the members of which are adjustably connected at their inner end portions by screw and slot connections 103, 104, re-

spectively', is connected at each end to a pin 62, the link being received between the sleeve or collar 101 on each pin and the inner face of the plate 60, as shown in F ig. 8. for example. In this manner a pivotal ciinnection is effected between. the link 102 at each end thereof and one of the reversing devices or frames illustrated in detail in Fig. 6. The effect of this connection is to cause the pivotal movement of one of said reversing frames to produce a corresponding movement of the other frame. A movement of one of the frames therefore to effect a disconnection of the associated pawls from their ratchet wheel will produce a corresponding movement of the other reversing frame or deviceto afford ,a move-' ment of the associated pawls into engagement with their ratchet wheel. The hand actuated means for controlling the operation of these reversing devices are as follows: From an inspection of Figs. 4, 5 and 8 it will be seen that the plate 60 of each reversing frame is pivotally connected at 105 to a sheet metal bent link 106, which in turn is pivotedat its upper end, as at 107, to a crank arm 108 of a sheet metal bell crank lever, designated as a whole by the reference numeral 109. This bell crank lever is provided with a yoke-like portion 119 by which the lever may receive a pivotal connection at 111 on the associated bracket arm 34. A split friction washer 111 is interposed between one of the bearing arms of each angular lever 109 and the associated bracket arm 34, in order to provide sullicient friction between each lever and its supporting bracket to enable the lever and the parts connected therewith. to be held against accidental d splacement from the position to which they maybe shifted. A depending arm 112 of each angular lever 109 has its free end arranged adjacent to the associated driving shaft 33 and in the path of movement of the flange 37 on the associated sleeve 36. The construction and arrangement of the parts is such that the bell crank levers 109 are connected to their respective shifting devices in such a; manner that the depending end of one of the levers will be in aposition corresponding to that represented in Fig. 5 whenthe depending arm of the other bell crank 109 is nearer or adjacent to the flange 37 of the associated sleeve 36. Should the operator at any time desire to reverse the direction of feed of the ribbon it is merely. necessary to effect a longitudinal movement of the shaft 33 of the spool from which the .ribbon has been winding, and which for the purpose of description may be referred to as the empty spool, although it: will be understood that the spool in question is not necessarily empty when a reversal of the parts by hand is effected. Such reversal is' effected by moving the shaft 33 of the empty spool rearwardly to the position indicated in Fig. 8. The effect (if this movement is to actuate the associated bell crank lever 109 through the operation thereon of the sleeve 36 and its flange 37. The movement of the bell crank 109 thus described is effective to turn the reversing device of the empty spool from the position indicated at the left-hand side o Fig. 1 to a position corresponding to flu, represented at the right-hand side of .-.=1f. This affords an engagement of the and holding pawls of the em ty spool 3th their ratchet wheel, thus ren ering the driving' mechanism for the empty spool operative to turn that spool. The movement of the reversing device of the empty spool thus effected is operative to transmit'a corresponding movement through the link 102 tothe reversing device of the other spool,

thus shifting said reversing device to a position corresponding to that shown at the left-hand side of Fig. 4, thereby disengaging the feed and holding pawls for the winding spool from engagement with. the associated ratchet wheel. As soon as the bell crank 109 of the empty spool has been shifted in the manner described by a longitudinal displacement of its driving shaft 33, the finger piece on the shaft may be released and the associated spring will return the shaft to the norm? indicated in Fig. 5.

In addition to the hand actuated means for effecting a reversal in the direction of the feed of the ribbon, I have provided automatically operated means for effecting a reversal in the direction of the feed of the ribbon when an end thereof is approached. From an inspection of Fig. 4: it will be observed that a sheet metal pawl 113 is pivoted at 11 ito each of the plates of the reversing devices. Each pawl 113 is doubled at the heel thereof and is constructed like the hold- '80. As the parts are shown in full lines in Fig. 9, the pawl 113 is in engagement with the ratchet teeth on the associated actuating member. This member being oper ated at each printing operation, it will be understood that the engaged pawl 113 and the reversing device to which it is pivoted, will be by successive strokes shifted fron the full to the dotted line position indicated in Fig. 9, thus positively, moving said re versing device and through the intermediate connecting link 102 the reversing device of the other spool.

The automatically operating means for controlling the engagement of each of the pawls 113 with the actuating device by which the pawl and the reversing device connected therewith are shifted are as follows: From an inspection of Figs. 6, 9 and 10 it will be understood that a contact device 118 is adapted to be received between the flanges of each of the ribbon spools and to bear upon the ribbon which is coiled upon the spool. This device is in the nature of a curved sheet metal arm which is secured at its lower end in the split end 119 of a rock shaft 120 which receives a bearing in the plates 53 and 60 of the associated actuating device. This rock shaft has an enlarged portion 121 which forms a shoulder at 122 which bears against the plate 53. The opposite end of the shaft receives a hub 123 fixedly connected to a cam plate 124. Set screws 125 are'received in tapped openings in the hub and bear at their inner ends against the shaft 120 to fixedly connect the cam plate to the rock shaft. The cam plate is apertured at 126 to receive a pin 127 which projects from the plate 60 of the associated reversing device. This pin 127 limits the pivotal movement of the cam 121 and wits connected therewith. A contracrile :pring 126 is connected at one end to the cam plate 121 and its opposite end to a projecting arm on the associated plate 60. The power of this spring is exerted to turn the rock shaft 120 and force the bearing portion of the contact device 118 intocontact with the ribbon on the associated spool, and to move said contact or engaging portion of the member 118 toward the axis of the spool as the ribbon is unwound. From an inspection of Fig. 4 it will be seen that as the parts appear at the left-hand side thereof the contact edge 128 of the left-hand cam. plate 124 engages the nose of the lefthand pawl 113, maintainingit out of engagement with the teeth 87 of the companion actuating device 80. When, however, the cam 124 is shifted to a position corresponding to that shown in Fig. 9, the companion pawl 113 will be released from control of the cam p'lateand allowed to engage the ratchet teeth of the cooperative actuating device, to be shifted thereby from the full to the dotted line position in Fig. 9. This results in shifting the reversing devices or frames and .causing a change in the direction of the feed of the ribbon. It will be understood that the positions of the cams 124 are controlled by the ribbon on the ribbon spools. Thus when the ribbon on one spool is exhausted, as indicated in Fig. 9, the opening 28 in the core of the empty ribbon spool is exposed and adapted to receive the associated contact member 118. As the latter moves to the position shown in Fig. 9, the pawl 113 controlled thereby will be released by the cam and moved by its spring into effective engagement with the teeth- 87, on the companion b'ctuating member. The next one or more printing operations will cause the engaged awl 113 and the reversing device to which it is connected to be shifted from the full to the dotted line position in Fig. 9, thereby throwing the feed and holding pawls of the empty ribbon spool into operation and causing the reversing device of the full spool (through the intermediate link 102) to be shifted to enable the feed and holding pawls therefor to move out of engagement with the associate ratchet wheel. The feed of the ribbon therefore will be automatically reversed. It will be understood that each bearing device 118 is in the nature of a pivoted follower which is adapted to bear upon the ribbon on the associated ribbon spool, and to approach the axis of the spool, under the action of the spring 126*,- as the ribbon is unwound or to move toward the periphery of the spool as the ribbon is wound thereon, and that these movements of the contact devices 118 are effective to control the cams 124 which in turn automatically control the engagement between the pawls 113 and their associated actuating members 80.

It will be seen that in effecting an auto matic reversal in the direction of the feed of the ribbon the parts are operated indeendently of any strain or pull on the rub- )on and that the operation of the reversing means is positively effected through the positive actuation of the key controlled actuating devices 80 and the positive engagement of the teeth 87 thereon with the pawls 113. It will be understood, moreover, that if during the reversing operation both feed pawls 88 should, for any reason, be

simultaneously in temporary engagement with their respective ratchet wheels 49, or should be simultaneously out of engagement therewith so that the ribbon will not be fed, an operation of the reversing devices will, nevertheless, continue during the printing operations and a blocking of the operation of the reversing means will not result. A proper feed of the ribbon will therefore eventually be effected-when a completion of the reversing operation has taken place. In some constructions heretofore in use an arrest of the feed of the ribbon under some such conditions as those pointed out above would result in tying up or blocking the reversing mechanism and in some instances the feed of the carriage, thus tying up the machine as a whole. This last mentioned advantageofvthe present construction I regard as an important feature of my invention.

Aside from the foregoing advantages it will be understood that nearly all the parts of the ribbon feed and reversing mechanism are made from sheet metal and are in the nature of punch work which may be produced at ,little cost, and that the construction is nevertheless positive in action and effective and reliable in use. It' will also be seen that each ribbon spool, its actuating and reversing means, etc., are carried by a bracket which may be readily introduced into or removed from the machine and that the parts associated with each spool constitute in effect a separate unit. In other words, the mere detachment of the links 78 from the crank arm and the removal of the screws 23 enables the entire ribbon feed and reversing mechanism and ribbon spools to be removed as a unit from the machine. Furthermore, the parts carried by each bracket 22 may be readily assembled and are not liable to be damaged or rendered ineffective.

It is thought that the construction and operation of the mechanism will be clearly understood from theforegoing description, it being understood that a forward movement of each driving shaft 33 in its bearings will enable the associated ribbon spool to be detached and removed from the machine; that a slight rearward movement of the shaft of the ribbon s 001 from which the ribbon is winding is e ective to operate the reversing devices to change the direction of feed of the ribbon and to wind the ribbon on instead of oil of said spool; that when an end of the ribbon is approached the associated controlling device comprising the members 118, 119 and 124 is automatically moved to a position where the associated pawl 113 is enabled to engage the teeth 87 on the associated actuating member and that the operation of this last mentioned member under control of the which extends axially machine, a driving printing keys is effective to automatically and positively shift 'the reversing devices to change the direction of feed of the ribbon and to wind it oninstead ef off o'f the ex.

austed spool. While I, have shown and described with considerable detail one foi'm 'of ribbon" feed and reversing mechanism embodying "my lD VGPtlOH and one form of meansfor enabling the. ribbon spools to be readi-ly disconnected and removed from the machine, .it should be understood that various changes may be made without departing from the spirit and scope of my invention.

What 'Iclaiin as new and desire to secure by Letters Patent, is':-

- 1.. Ina typewriting machine, the combi- ,nation.of a ribbon spool, a driving shaft which extends axially through said spool and by whichthe spool is l'ivemand means which enable s aid shaft to be displaced ,longitudinally an 'nd thus enable the latter. to be removed from the machine. I

2. In a' typewriting machine, the combination of a ribbon spool, a driving shaft which extends axially through said spool, the spool and shaft being connected to'tuit together, and means which enable the shaft to be displaced longitudinally independently of the spool and thereby disconnect the driving-shaft from the spool and enable the latter to be removed from the machine. 3. 11 a typewriting machine, the combination 6 a ribbon spool, adriving shaft 'which ex ends axially through ,said spool, a splined connection between said shaft and spool, and means ,which enab e said shaft to, be displaced longitudinally and removed from the spool, thus freeing the shaft from the spocl'and disconne'cting'the splined connection between the two and enabling the spool to be removed from the niachiner 4. In a'typewriting.machinel the combination of a ribbon. spool, a,driving shaft through said spool and by which the spool is driven, a bearing for said shaft and in which the shaft may be shifted longitudinally from the spool to enable the latter to be removed from the machine, a spring which tends to normally maintain the shaft in position to hold the spool against removal from the machine, and an actuating device connected to said shaft for t rning it. 5. din a typewritingmachme', the combination of a ribbon spool, a driving shaft which extends axially. through said spool and by which the spool is driven, a bearing 'for'said shaft and in which theshaft may be shifted longitudinally from the spool to enable the latter to .be re'moved from the wheel, and splined consaid shaft 'anddriving nectlons between the shaft and spool- Wheel and between removed from the spoolmadhine, the combination of a ribbons ool, adrivin'gshaft which extends axia'lly ,through said' spool and by which thla spool is .drivenymeans which enable said shaft to be "displaced longitudinally'and' removed from the spool andthus enable the latter to be remove from the machine, and afinger piece connected,to said shaft and by which the shaft.

and ribb n spool may be turned and a longitiidinal ispldc ment of the eil'e cte d uhenldesired-I i 7. In a typewriting machine, the combination of a ribbon 'spo movement, an axially movab le driving shaft "which extends axially through said spool andavhich is operatively connected thereto to cause the spool to turn with the 6. In a typewriting independently of the spool, a driving whee'l fixed against axial shaft maybe shaft but to enable the shaft to be moved axially fixed. against axial movement but operaected to turn said shaft and to enable the latter to move axially independently tliereof, -an axial movement of the shaftl being effective to disconnect it from the spool and enable the latter to be removed from the machine and without affecting the operative connection between said shaft and driving wheele- 8. In'a typewriting machine, the combination of a ribbon spool, a shaft which extively con tends axially through the ribbon spool and,

which is mounted for axial-movement, and

ribbon feed reversing bv the axial movement of said shaft. nation of a 'ribbonspool, a driving shaft which extends axially through said and by which the spool is turned,. said shaft being mounted for axial movement,

bon feed reversing mechanism controlled by the axial movement of said shaft.

10. In l1 typewriting achine, the cor'nbi nation of av ribbonsp'ool, a shaft which ex tends axially through the ribbon spool and which is mounted for axial movement, rib-.

bon fe'ed reversing mechanism controlled by the axial movement of said shaft an'd means for effecting an operation of said ribbon feed reversing means independently ofthe axial movement of said shaft.

-11. In a typewriting machine, the combination of a ribbon spool, a shaft which exte'nds axially through the movem 12. In a typewriting machine, the combination of a ribbon spool, a shaft which"e'xtends axially through the ribbon spool 's'aid shaft being movable axially at will butnormally restra ned against ibbon feed reversing mechanism controlled spool and rib-- ribbon spool, said" shaft being movable axially at will, means;

' shaft against such movement,-

mechanism controlled v u l n 0 9. In a typewritmg machine, the combiby the axial movement of said shaft, and automatically actuated means for operating said reversing mechanism independently of the axial movement of said shaft.

' 13. In a typewriting machine, the combination of a ribbon spool, a movable controlling" member, and means cooperative therewith to enable the spool to be removed from the machine by a movement of said member in one direction and to effect a change in the direction ofthe feed of the ribbon by a movement of said controlling'member in another direction.

- 14. In a typewriting machine, the combination of a movable controlling member, a ribbon spool mounted thereon and turned thereby, a movement of said controlling member in one direction enabling the spool to be detachedand removed from the machine, and ribbon feed reversing means controlled bya movement of said controlling member in another direction.

15. In a typewriting machine, the combination of a ribbon spool, a shaft, and means by which said shaft is enabled to control the removal of the spool from the machine and reversal in the direction of the feed of the ribbon.

16. In a typewriting machine, the combination of a-ribbon spooi, a rotative shaft which is also movable bodily, and cooperative means which enable the spool to be released and removed from the machine'by a bodily movement of the shaft in one direction and which causes a reverse in the direction of the feed of the ribbon by a bodily movement of the shaft in another direction.

17,. Ina typewriting machine, the combination of a ribbon spool, a rotary driving shaft Which passes axially through and lo tates the spool, said shaft also being movable axially, an axial movement of the shaft in one direction disengaging the shaft from the spool and enabling the latter to be removed from the machine. andribbon reversing mechanism controlled by an axial movement of the shaft in the opposite direction.

18. Ina typewriting machine, the combination of a ribbon spool, a rotative shaft which is also movable bodily, cooperative means which enable the spool to be released and removed from the machine by a bodily movement of the shaft in one direction and which causesa reverse in the direction of the feed of the ribbon by a bodily movement of the shaft in another direction, and means which restrain said shaft against axial movement.

19. In a typewriting machine, the combination of a ribbon spool, a rotary driving shaft which passes axially through and rotates the spool, said shaft also being movable axially, an axial movement of the shaft in one direction disengaging the shaft from the spool and enabling the latter to be re moved from the machine, ribbon reversing mechanism controlled by an axial movement of the shaft in the opposite direction, and spring means which restrain said shaft againstv axial movement,

20. In a typewriting machine, the combination of a ribbon spool, a rotative shaft which isalso movable bodily, cooperative means which enable the spool to be released and removed from the machine by a bodily movement of the shaft in one direction and which causes a reverse in the direction of the feed of the ribbon by a bodily movement of the shaft in another direction, and means operable independently of the bodily movement of said shaft for reversing the direction of feed of the ribbon.

21. In a typewri ting machine, the combination of a ribbon spool; a ratchet wheel for turning said spool; apawl for turning said wheel; and ribbon reversing mechanism comprising a rack actuated at each printing operation, a second pawl with which said rack is adapted to cooperate, a reversing device controlled by said second pawl for rendering the first mentioned pawl operative or inoperative to co-act With its ratchet wheel, and automatically operating means cooperative with said second pawl to control its engagement with said rack.

2:2. In a typewriting machine, the combination of a "bracket detachably mounted on the frame of the machine and fixed against .movement thereon; and ribbon mechanism comprising a driving shaft carried by said bracket. a ribbon spool, a ribbon feed device for turning said shaft, means for actuating said ribbon feed device, and a ribbon reversing device. said ribbon spool, feed device and reversing device being carried by said shaft.

.23. In a typewriti'ng machine, the combination of a bracket detachably mounted on the frame of the machine and fixed against movement thereon; and ribbon mechanism comprising a driving shaft carried by said bracket, a ribbon spool, a ribbon feed device for turning said shaft, means for actuating said ribbon feed device, a ribbon reversing device, said ribbon spool, feed device and reversing device being carried by said shaft to be effected. and means controlledby.

an axial movement of said shaft for operat ing said reversing device.

25. In a typewriting machine, ribbon mechanism comprising a driving shaft, a ribbon spool, a ribbon feed device for turning said shaft, means for actuating said ribbon feed device, a ribbon reversing device, said ribbon spool, feed device and reversing device being carried by said shaft, automatically operating means which effect an operation of said reversing device when an end of the ribbon is reached, means which enable an axial movement of said shaft to be effected at will, and means controlled by n axial movement of said shaft for operat 'g said reversing device.

26. In a typewriting machine, ribbon mechanism comprising a driving shaft, a

ribbon spool, a ribbon feed device for turnin said shaft, a ribbon reversing device, said ribbon spool, feed device and reversing device being carried by said shaft, means for actuating said ribbon feed device, automatically operating means which effect an operation of said reversing device when an end of the ribbon is reached, means which enable an axial movement of said shaft to be eflected at will in either direction from a central normal position, the axial movement of the shaft in one direction disconnectin the shaft from the spool and enabling the%atter to be removed from the machine, and means controlled by an axial movement of the shaft in the opposite direction for operating said reversing device.

27. In a typewriting machine, ribbon mechanism comprising a driving shaft, a ribbon spool, a ribbon feed device for turnin said shaft, a ribbon reversing device, said ribbon spool, feed device and reversing device being carried by said shaft, means for actuating said ribbon feed device, automatically operating means which effect an operation of said reversing device when an end of the ribbon is reached, means which enable an axial movement of said shaft to be etfected'at will in either ,direction from a central normal position, the axial movement of the shaft in one direction disconnecting the shaft from the spool and enabling the latter to be removed from the machine, means controlled by an axial movement of the shaft in the opposite direction for operating said reversing device, a spring, and means whereby said spring tends to restrain said shaft against axial movement in either direction and is cwicctive to return the shaft to normal position.

'28. In a typewriting machine, ribbon feed mechanism comprising a ribbon spool, a rotative shaft which is also movable axially in either direction from a central normal positirn and which is operatively connected to turn said spool, an axial movement of bon s 001 and enablin the shaft in one direction releasing'the ribthe latter to be remove from the machine, a contact device which is movable with the shaft in the axial movement of the latter in one direction but enables the shaft to move independently thereof during the axial movement of the shaft in the opposite direction, and ribbon feed reversing means controlled by the movement of said contact device.

29.111 a typewriting machine, ribbon feed mechanism comprising a ribbon spool, a rotative shaft which is also movable axially in either direction from a central normal position and which is operatively connected to turn said spool, an axial movement of the shaft in one direction releasing the ribbon spool and enabling the latter to be removed from the. machine, a

contact device which is movable with the shaft in the axial movement of the latter in one direction but enables the shaft to move independently thereof during the axial movement of the shaft in the opposite direction, ribbon feed reversing means controlled by the movement of said contact device, and a .spring which co-acts operatively with said contact device and shaft to restrain them against movement axially from their normal positions and for returnin them to then normal positions.

30. n a. typewriting machine, ribbon mechanism comprising a universal bar separate and distinct from the universal bar of the carriage feed mechanism, two ribbon feed pawls situated at opposite sides of the machine, said feed pawls being connected with and actuated by said first mentioned universal bar, two ratchet wheels, one for each of "said awls, independent driving shafts each being driven by and carrying one of said ratchet wheels, and a ribbon spool carried and turned by each of said shafts, said spools being separate and distinct from said ratchet wheels 31. In a typewriting machine, ribbon mechanism comprising a universal bar separate and distinct from the universal bar of the carriage feed mechanism, two ribbon feed pawls situated at opposite sides of the machine, said feed pawls being connected with and actuated by said first mentioned universal-bar, two ratchet wheels, one for each of said pawls, independent driving shafts each being driven by and carrying one of said ratchet wheels, a ribbon spool carried and turned by each of said shafts, said spools being separate and distinctfrom said ratchet wheels, and automatically actuated reversing means cooperative with each. of said pawls to render it operative or inoperative on the associated ratchet wheel whereby when an end of the ribbon is reached one pawl will be thrown out of operation and the other will be thrown into operation to reverse the direction of feed of the ribbon.

32. In a typewriting machine. ribbon mechanism comprising a universal bar. two ribbon feed pawls situated at opposite sides of the machine. said feed pawls being connected withand actuated by said universal bar, two ratchet wheels, one for each of said pawls, independent driving shafts each carrying one of said'ratchet wheels, a ribbon spool carried and turned by each of said shafts, and means for affording an axial movement of said shafts to detach the shafts from the ribbon spools and enable the latter to be removed from the machine.

33. In a typewriting machine. ribbon mechanism comprising a universal bar. two ribbon feed pawls situated at opposite sides of the machine. said feed pawls being connected with and actuated by said universal bar. two ratchet wheels. one for each of said pawls, independent driving shafts each carrying one of said ratchet whels. a ribbon spool carried and turned by each of said shafts, automatically actuated reversing means cooperative with each of said pawls to render it operative or inoperative on the associated ratchet wheel. whereby when an end of the ribbon is reached one pawl will be thrown out of operation and the other will be'thrown into operation to reworse the direction of feed of the ribbon. means for affording an axial movement of said shafts, and means controlled by such axial movement for actuating said reveis ing means.

34. In a typewriting machine. ribbon mechanism comprising a universal bar. two ribbonfeed pawls situated at opposite sides of the machine. said feed pawls being coi nected with and actuated by said universal bar, two ratchet wheels. one for each of said pawls. independent driving shafts each carrying one of said ratchet wheels. a ribbon spool carried and turned by each of said shafts. automatically actuated reversing means cooperative with each of said pawls to render it operative or inoperative on the associated ratchet wheel. whereby when an end of the ribbon is reached one pawl will be thrown out of operation and the other will be thrown into operation to reverse the direction of feed of the ribbon, hand controlled means operable at will for effecting an axial move ment of either of said shafts independentlv of the other. and means controlled by such axial movement of either of said shafts for shifting said reversing means.

In a typewriting machine, ribbon mechanism comprising a universal bar, two ribbon feed pawls situated at opposite sides of the 'i'nachine, said feed pawls being connected with and actuated by said universal bar, two ratchet wheels, one for each of said pawls, independent driving shafts each carrying one of said ratchet wheels, a ribbon spool carried and turned by each of said shafts, automatically actuated reversing means cooperative with each of said pawls to render it operative or inoperative on the associated ratchet wheel, whereby When an end of the ribbon is reached one pawl will be thrown out of operation and the other will be thrown into operation to reverse the direction of feed of the ribbon, means for affording at will an axial movement of each of said shafts in either direction from a central normal. position, the axial movement of each shaft in one direction disconnecting it from the associated ribbon spool and enabling the latter to be removed from the machine, and means controlled by an axial movement of each of said shafts in the op- .posite direction for shifting said reversing means.

36. In a typewriting machine, ribbon mechanism comprising a universal bar, two ribbon feed pawls situated at opposite sides of the machine. said feed pawls being connected with and actuated by said universal bar, two ratchet wheels, one for each of said pa wls. independent driving shafts each carrying one of said ratchet wheels, a ribbon spool carried and turned by each of said shafts, automatically actuated reversing means cooperative with each of said pawls to render it operative or inoperative on the associated ratchet wheel. whereby when an end of the ribbon is reached one pawl will be thrown out of operation and the other will be thrown into operation to reverse the direction of feed of the ribbon, means for alfording at will an axial movement of each of said shafts in either direction from a. central normal position, the axial movement of each shaft in one direction disconnecting it from the associated ribbon spool and enabling the latter to be removed from the machine. means controlled by an axial. movement of each of said shafts in the opposite direction for shifting said reversing means, and spring means associated with each shaft and which tend to restrain it against axial movement and to return it to its central normal position.

37. In a typewriting machine, ribbon mechanism comprising a ribbon spool. a driving shaft which passes axially through said spool and which is operatively connected to the spool to turn it. a yoke which spans said spool and restrains it against axial movement, and means which afford an axial movement of said shaft relatively to said yoke and spool to remove the shaft from the spool and enable the latter to be removed from the machine.

, releases the spool forshifting said reversing 38. In a typewriting machine, ribbon mechanism comprising a ribbon spool, a--

driving shaft which passes, axially through said spool 'and which is operatively connected'to the spool to turn it, a yoke which spans said spool and restrains it against axial movement, said yoke being pivoted to turn on said shaft, and ribbon reversing means corliitrolled by a pivotal movement of said yo e.

'39. In a typewriting machine, ribbon mechanism"comprising a ribbon spool; a driving shaft which passes axially through said spool and which is operatively connected .to the spool to turn it, said shaft being movable axially at will, a yoke which spans said spool and restrains it against axial movement, said yoke being pivoted to turn on said shaft, ribbon reversing means controlled by the, pivotal movement of said yoke, and means controlled by .the axial movement of said shaft for shifting said reversing means. a

40. In a typewriting machine, ribbon mechanism comprising a ribbon spool, a driving shaft which passes axially through said spool and which is operatively connected to the spool to turn it, said shaft being, movable axially in either direction from a central normal position, the. axial movement of the shaft in one direction freeing it from the spool and enabling the latter to be removed from the machine, a yoke which spans said spool and restrains it against axial movement in either direction, said yoke being pivoted' to.tunn on said shaft,.

ribbon reversi'ng means controlled by the pivotal movement of said yoke, and means controlled by the axial movement of said shaft in the direction opposite to that which means. v

41 In a, typewriting machine, ribbon mechanism comprising'a ribbon spool, a driving shaftwhichextends axially through said spool and turns, it, a controlling memher which is supported by said shaft and is free to turn on it, ribbon reversing means controlled by said controlling member, 'a toothed device actuated at each printing operation," and. automaticallv operating means for effecting. an operative connection between said toothed device and controlling member when an end of the ribbon is reached.

42. In a typewriti'ng machine, ribbon mechanism comprising a ratchet member actuated at each printing operation, a ribbon spool, means for feeding said spool, a re-' versing device controlled by said ratchet member, and automatically operating means I for placing said reversing device under control of said ratchet bar when an endof the ribbon is reached.

anism comprising a ratchet bar actuated at each printing operation, a ribbon spool, means for feeding said spool, a reversing device controlled by said ratchet baa, and automatically operating means for placing said reversing device under control of said ratchet bar when an end of the ribbon is reached, said automatically operating means including a contactdevice which bears againstJhe ribbon on the spool and moves toward from the axis ofthe spool under the contro-i of the ribbon thereon and thus determines" when the reversing device shall be placed under control of said ratchet bar. I

45. In a ty'pewriting machine, ribbon mechanism comprising a ratchet bar actuated at each printing operation, a ribbon spool, a ratchet wheel for turning said spool, a pawl for turning said ratchet wheel, a reve sing device coo'perative'with said pawl to t row and maintain it out of'coiiperation with said ratchet wheel, a reversing pawl which coacts with said ratchet bar,- and automatically operating means for bringing said reversingpawl and the ratchet bar into cooperative relation when an end of the ribbon is reached, said automatically operating means including a contact device which bears against the ribbon on the spool'and moves toward and from the axis of the spool under the control of the ribbon thereon, and a cam controlled 1 by said contact device and cooperative with said reversing pawl to control the 'engagementof the latter with said ratchet bar.

$6. In a typewriting machine, ribbon mechanism comprising a ratchet bar actuated at each printing operation, a ribbon spool,

means for feedin 'said spool, a reversing device contro led y said ratchet bar, automatically '0 rating means for placing said reversing device under control of said ratchet bar when an end of the ribbon is reached, and hand actuated means operable at will independently of said ratchet bar for operating said reversing device.

47. In a typewriting machine, ribbon mechanism comprising a ratchet b ar actuated at each printing operation, a ribbon spool, a

driving shaft for said spool, said shaft being movable axially at will, a reversing device controlled by SaId ratchet bar, automatically operating means for lacing said reversing device under controlo said ratchet bar when an end of the ribbon 'is jreached, and means controlled by an axial movement of said driving shaft for shifting said reversing device.

48. In a typewriting machine, ribbon mechanism comprising a ratchet bar actuated at each printing operation, a ribbon s 001, a driving shaft for said spool, said sha t being movable axially at will, a'ratchet wheel for turning said shaft, a pawl for turning said ratchet wheel, a reversing device coiiperative with said pawl for throwing and maintaining it out of coiiperative relation with said ratchet wheel, a reversing pawl which co-acts with said ratchet bar, automatically operating means for bringing said reversing pawl and ratchet bar into'cofiperative relation when an end of the ribbon is reached,

and means controlled by an axial movement of said driving shaft for shifting said reversing device.

49. In a typewriting machine, ribbon mechanism comprising a ratchet bar actuated at each printing operation, a ribbon spool, a driving shaft for said spool, said shaft being movable axially at will, a ratchet wheel for turning said shaft, a pawl for-turning said ratchet wheel, a reversing device cooperative with said pawl for throwing and maintaining it out of cooperative relation with saidratchet wheel, a reversing pawl which co-acts with said ratchet bar, automatically operating means for bringing said reversing pawl and ratchet bar into cotiperative relation when an end of the ribbon is reached, said automatically operating means including a contact device which bears against the ribbon on the spool and moves toward and from the axis of the spoolunder the control of the ribbon thereon and thus determines when the reversing device shall be placed under control of said ratchet bar, a cam controlled by said contact device and cooperative with said reversing pawl to con-- trol the engagement of the latter with said ratchet bar, and means controlled by an axial movement of said driving shaft for shifting said reversing device.

50. In a typewriting machine, ribbon mechanism comprising a ribbon feed universal bar separate and distinct from the universal bar of the carriage feed mechanism and which is actuated at each printing operation, a feed pawl controlled by said ribbon feed universal bar, a ratchet wheel controlled by said pawl, a ribbon spool controlled by said ratchet wheel, a ratchet bar controlled by said ribbon feed universal bar and operative thereby at each printing operation, a reversing device coiiperative with the feed pawl to throw it out of cooperative relation with said ratchet wheel, a reversing pawl cooperative with said ratchet bar, and automati- 3. -1Iy operating means for bringing said reversing pawl and ratchet bar into cooperative relation when an end of the ribbon is reached.

51. In a typewriting machine, ribbon mechanism comprisinga ribbon feed -universal bar separate and distinct from the universal bar of the carriage feed mechanism and which is actuated at each printing operation, a feed pawl controlled by said ribbon feed universal bar, a ratchet wheel controlled by said pawl, an axially movable driving shaft turned by said ratchet wheel, a ribbon spoolt'urned by saidshaft, a ratchet bar controlled by said ribbon feed universal bar and operative thereby at each printing operation, a reversing device cooperative with the feed pawl to throw it out of cooperative relation with said ratchet wheel, a reversing pawl co operative with said ratchet bar, automatically operating means for bringing-said reversing pawl and ratchet bar into cooperative relation when an end of the ribbon is approached, and means operable at will by an axial movement of said driving for shifting said reversing device.

52. In a typewriting machine, ribbon mechanism comprising a ribbon feed universal bar separate and distinct from the universal bar of the carriage 'feed' mechanism and which is actuated at each printing operation, a feed pawl controlled by said ribbonv feed universal bar, a ratchet wheel controlled by said pawl, a ribbon spool, a driving shaft which passes axially through said controlled by said pawl, a ribbon spool, a

driving shaft which passes axially through said spool and which is controlled by said ratchet wheel, said shaft being axially movable at will in either direction from a central normal position, the axial movement of said shaft in one direction withdrawing theshaft from the spool and enabling the latter to be removed from the machine, a reversing device for throwing said feed pawl out of cooperative relation with said ratchet wheel, automatically operating means for shifting said reversing device when an end of the on each of said shafts, areversing device cooperative with each feed pawl to control the movement of the latterjinto' and out of cooperative relation with its associated ratchet wheel, and means controlled by the axial 20, movement of each of said'shafts for shifting at each tiverelation with said reversing devices;

55. In a 'typewriting machine, ribbon feed mechanism comprising a universal bar, a

pair ofv pivoted actuating devices'connected said universal barto -be actuated thereby {printing operation, a-ribbon feed pawl carried by each actuating-device, a

ratchet wheelwitli which each feed pawl is adapted to cooperate, independently axially movable ribbon spool shaft-s turned by said ratchet wheels,. a ribbon spool v on each of said shafts,a reversingdevice cooperative with each feedpawl-to control the mov e- 'ment of the latter into and out of cooperative relation with its associated ratchet wheel, means controlledby theaXial move. ment' of eachotsaidshafts for sliiiting said reversing. devices, andgindepe tdently operable automat'ically; actuated'm'eans tor shifting said reversing deviceswhen'either end of the ribbon is reached. v I

56. In a typewriting machine,ribb pn feed mechanism comprising a universal 'bar, a air, of pivoted "actuating devices connected t a d 'versal bar-to be actuated therebyl chvprinting operation, .a ribbon; feed wl carried'v by'each actuating dev ce, va ratchet wheel with which eachieed pawlis adapted to.-cooperate, independentl flXlflllY movable ribbonspool shafts turne by said ratchet wheels, a ribbon spoolron'each ofsaid s'hafts,a reversing device cooperative with each feedpawlto controlthe movement ofthe latte r I its associated ratchet I ,wheel, means controlled by the axial moveintent ofeach of said shafts forshifting said versing ldevices, independently operable aubolilatlcally actuated means '.for shifting gee kaidreversing devices '-when'either. end of reached, said automatically opthe" ribbon is a 4 ratchet ban. conemfing means including a meted to-eachof said- -actuatingdevices-to.

h e-"actuated at each printingpperation, re-

-into andout of coopera 'versing pawl and thus shift the reversing devices.

57. In a typewriting machine, ribbon feed mechanismcomprising a universal bar, a pair of pivoted actuating devices connected to said universal bar tobe' actuated thereby at, each printing operation, a ribbon feed pawl carriedby each actuating device, a

- ratchet wheel withwhich each feed pawl is adapted to cooperate, independently axially movable ribbon spool shafts turned by said ratchet wheels, a ribbon spool on each of saids'hafts, a reversing device cooperative with each feed pawl to control the movement ofthe-latterinto and out of coopera-- t ve relation with its associated ratchet wheel, meanscontrolled by the axial movement of each of said shafts for shifting said reversing devices, independently operable automaticallw actuated means for shifting "said reversing devices-when either end of the ribbon is reached, said automatically operating means including ratchet bar connected to each of said actuating devices to be actuated at each printing operation,.reversing pawls connected to said reversing de vices. a pair'of contact devices adapted-to bear on the ribbon on said spools and to be controlled thereby in theiumovements towardand from the axes of said spools, and

a cont-rolling device connected with each contact device and cooperative with the associated reversing pawl to control the move- -ment of the latter into and out of coopera tive relation with the associated ratchet bar.

[158. In a typewriting machine, ribbon mechanism comprising a ribbon spool, {a toothed actuating member WllICll is moved at each printing operation, a feed pawl car'- ried by said actuating member, a ratchet wheel with which said feedpawl co-acts, a reversing device for controlling the movement of the pawl into andout of cooperative relation with its ratchet wheel, and automatically operating nieans for effecting an operative connection between said reversing device and the teeth of said actuating member, so that thevreversing device may be.

shifted by the actuating member.

59. In a typewriting machine, ribbon mechanism comprising a, ribbon fipoolfa toothed actuating member which is movedv at each printing operation, a ,feed pawl car' ried by said actuating member, a ratchet wheel with which said feedpawl co'-acts, a

reversing device forcontrolling the movement of the pawl into and out of cooperative relation with its ratchet-wheel, and automatically operating 'means for efiecting an operative-connection revereing device and the teeth of said actuating member, so that the reversing device may be shifted by the actuating member, said automatically operating means including a contact device adapted to bear on the ribbon on the spool and to be controlled thereby 'in the movement of said device toward and from the axis of the spool.

00. In a typewriting machine, ribbon mechanism comprising a ribbon spool, a toothed actuating member which is moved at each printing operation, a feed pawl car ried by said actuating member, a ratchet wheel with which said feed pawl co-acts, a reversing device for controlling the movement of the pawl into and out of cooperative relation with its ratchet wheel, and automatically operating means for effecting an operative connection between said reversing device and the teeth of said actuating member, so that the reversing device may be shifted by the actuating member, said automatically operating means including a reversing pawl connected with said reversing device and adapted to cooperate with the teeth on said actuating member, a cam which controls the movement of said reversing pawl into and out of cooperative relation with said teeth, and a contact device which bears on the ribbon on said spool and controls the position of said cam.

(31. In a typewriting machine, ribbon mechanism comprising two ribbon spools, independently axially movable driving shafts which pass through said spools, ribbon feed reversing devices one associated with each spool, a lever operatively connected with each reversing device and adapted to be shifted by an axial movement of the associated driving shaft, and operative connections between said reversing devices so that a movement of one will cause a movement of the other. V

62. Ina typewriting machine, ribbon mechanism comprising two ribbon spools, independently axially movable driving shafts which pass through said spools, ribbon feed reversing devices one associated with each spool, a lever operatively connected with each reversing device and adapted to be shifted by an axial movement of the associated driving shaft, operative connections between said reversing devices so that a movement of one will cause a movement of the other, and independent automatically operating means for shifting said reversing devices when an end of the ribbon is reached.

63. In a tvpewriting machine, ribbon mechanism comprising two ribbon spools, independently axially movable driving shafts which pass through said spools, a finger piece connected to each driving shaft for turning it and for moving it axially at will, ribbon feed reversing devices one associated with each spool and each adapted to turn around the associated driving shaft, an angular lever operatively connected with each reversing device and adapted to be shifted by an axial movement of the associated driving shaft, and operative connections between said reversing devices so that a movement of one will cause a movement of the other.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 29th day of April. A. D. 1914.

JOHN H. BARR. Witnesses CHARLES E. SMITH, E. M. VELLS.

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