US1799389A - Typewriting machine - Google Patents

Description

April 7, 1931' J. PHELPS TYPEWRITING MACHINE Filed March 26, 1927 2 Sheets Sheet 1 MN w .5343 ow 050? 95m m n QMJQ INVENTOR A TTORNEY WITNESSES P 7, 1931- J. PHELPS TYPEWRITING MACHINE Filed March 26 2 sheets-skeet 2 f Mira W WITNESSES ATTORNEY Patented Apr. 7, 1931 J 031 21 1 PHELPS, OF NORTH CALDWELL, NEW JERSEY, ASSIGNOR T REMINGTON TYPE- WRITER CQMPANY, OF ILEOI-I, NEW EUR-K,

A centres-Arron or new-roan TYPEVJRITING MACHINE Application filed March 26, 1927. Serial No. 178,683.

My invention relates to .typewritting machines and more particularly to means to aid in rapidly and accurately filling in addresses on sheets in which the bodies'of the letters U have been previously printed, usually on a multigraph or mimeograph machine.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth inthe following description and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters designate corresponding parts in the different views:

Figure 1 is a detail front view of the carriage and some of the associated parts equipped with the devicesof my invention. Figure 2 is a fragmentary, detail, fore and 2;: aft sectional view, taken through the paper table on the line 22 of Fig. 1 and looking in the direction of the arrows at said line.

Figure 3 is a fragmentary, detail, transverse sectional view, showing the means for effecting an adjustment between the feed rack and carriage. I

Figure 4: is a detail, fragmentary, perspective View, with parts omitted, of the righthand end of the carriage.

Figure 5 is a detail, fragmentary, side view showing the adjustable platen supporting plate at the right-hand end of the carriage.

Figure 6 is an enlarged, detail, transverse, vertical sectional view of the parts at the right-hand end of the carriage, the

section being taken on the line 66 of Fig.

8 and looking in the direction of the arrow at said line. I

. Figure 7 is a detail, side view of the adjustable stop-carrying member, shown detached.

be r

Figure 8 is a detail, fragmentary, fore and.

aft vertical sectional view of some of the parts shown 1n Flg. 6, the section being taken I on the line 88 of Fig. 6 and looking in the direction of the arrows at said line.

Figure?) is a detail, fragmentary, sec

tional view taken on the line 99 of Fig. 8 and looking in the direction of the arrows at said line.

. tures of said machine.

I have shown my invention, in the present instance, embodied in a No; Remington machine, in which the invention may be readily incorporated rially modifyingthe existing structural fea- It should be understood, however, that the invention is not restricted to use in said machine but may be employed in typeWrit-ing and like machines generall wherever found available.

The filling in of addresses on letter sheets having the body of the letter previously printed, is laborious and time consuming when the work is to be carefully matched as to line spacing and marginal alignment, as well as to denseness of imprints, and re quires considerable skill to thus accurately and neatly fill in the addresses, and as nearly as possible have each letter present the appearance of a wholly typewritten letter. So much so is this the case that only the more slrilful operators can be relied upon to effectively do this work, and they are paid a higher rate per iilled in, for their more perfectly matched work, as it necessarily requires more time. By the present invention means are provided that enable even an inexperienced operator to rapidly fill in the addresses in such work and with mechanical accuracy position each address with reference to the previously printed body of the letter both in spacing of the lines added and a marginal alignment of such lines.

The carriage of a No. 50 Remington machine comprises end plates 1 connected by united carriage rails 2 and a cross rod 3., A cylindrical platen 4 is revolubly mounted in bearing members carried by the end plates 1;

each end of the platenshaft having a finger Wheel 5 detachablyfixed thereto. The usual paper fingers 6, one of which is shown in Fig. 1, are mounted for sliding adjustment along the connecting rod 3. A line spacing ratchet wheel 7 may be connected by the usual clutch (not. shown) to turn with the platen. Said clutch is controlled by the usual finger piece 8, except that in the present instance said finger piece is returned to normal position by a spring 9 to close the clutch.

without modifying or mate- 7 thousand of addresses The platen is advanced line-by-line by the usual or any suitable line spacing pawl a, controlled by a finger piece I) which is also effective at the same time to return the carriage to the right. I

A paper table 10 is mounted by suitable means (not shown) in the rear of the platen to feed work sheets to the bight between the usual paper feed rollers (not shown) and the platen at the introductory side of the platen. The paper table is slotted horizontal- 1y at 11 to receive therethrough the stems of screws 12. The head of each screw is secured, by solder or otherwise, to a metallic strip 13. At the rear of the paper table each screw receive's a thumb nut 14 (see Fig. 2), the reduced shouldered end of which bears against a washer 15, which in turn bears against the rear side of the paper table. The stem of each screw 1 also passes freely through an ap erture in the foot piece 16 of a side edge guide 17, the foot piece resting on the front face of the paper table and the long side edge guide proper 17 extending up in a plane at substantially right angles to the plane of the table. There are preferably two of these guides, one coacting witheach edge of a work sheet. By loosening the nuts l the guides may be ad justed towards or away from each other, and a tightening of the nuts will firmly clamp and hold the guides in their adjusted positions.

The carriage is power driven and advanced step-by-step in its letterspace movements under control of the usual carriage escapeinent mechanism which includes feed racl: 18 releasably engaged with the usual feed pinion 0. Instead, however, of merely pivoting this feed rack on the carriage in the usual manner, I prefer to mount it so as to afford in addition a relative sliding movement between the carriage and said feed raclr, as will more clearly appear irom a consideration of Fig. 3. At the ends of the feed rack are secured by screws 19 two brackets 20 and 21. A pivot pin 22 is mounted to turn and receive a sliding movement in a bushing 23 threaded into a tapped opening in the right hand end plate 1 of the carriage, and held in position thereon by a lock nut 24. The inner end of the pin 22 is fixed to and constitutes a support for the bracket 20, so as to provide a pivotal and sliding support for one end of the feed rack 18. The bracket 21 also is fixedly secured to a pivot pin 25 that is supported for sliding as well as for pivotal movement in a bushing 28 threaded into a tapped opening in the left hand en plate 1 of the carriage. his bushing held in its adjusted position by a lock nut 27. An arm 28 is fixed to the outer endof the pin 25 and extends upward and forward therefrom and terminates in a finger piece 29. A depression of the finger piece is effective to turn the rack with its supporting pivot pinsland release the rack from the feed pinion 0. This construction is much the same as that usually employed, except that ordinarily the bushings 23 and 26 are screwed in to prevent any relative movement between the feed rack and the carriage lengthwise of the rack. In accordance with the present invention, I prefer to employ a coiled expansion spring 30 surrounding the pin 25 and bearing at one end against a washer 31 carried by the reduced end of the bushing 26. The other end of the spring bears against the bracket 21, or against a flanged part of the pin 25 connected to said bracket. A sleeve or collar 32 loosely surrounds the pivot pin 22 and has an up wardly extending arm 33 fixed thereto. The inner end of this sleeve constitutes an abut ment against which the bracket 20 bears under the force'of the spring 30. A headed shouldered pivot screw 34 is seated loosely in an opening in the arm 33 and is received at its threaded end in a tapped opening in the inner end. of a adjusting screw 35. By this connection the screw 35 is free to turn relatively to the arm 33 but the two are connected agains relative movement longitudinally of the platen. The screw 35 extends with its axis parallel to the axis of the platen through a tapped opening in the right hand end plate 1 and is provided at its outer end with a knurled head 36, thus constituting a thumb screw. This construction provides a micrometer adjusting means by which the carriage as a whole, with the platen carried thereby, may be adjusted relatively to the feed rack in the direction of the axis of the platen, either to right or left, depending on the direction in which the screw 35 is turned. If the screw 35 be turned clockwise the carriage, and the platen carried thereby, will be moved to the left relatively to the feed rack as the latter is held engaged with the feed pinion 0. On the other hand, if the screw be adjusted in the reverse directi on the carriage and platen will be adjusted to the right. However, under all adjustments, the fee d rack and carriage travel together in the ordinary operation of the machine. It will be understood that this adjustment cf the carriage and platen need not be in excess of any desired fraction of a single letter space dis tance. and is intended to provide for perfect marginal alignment between the previously printed body portion of the letter and the address to be filled in on the typewriter without the necessity and difiiculty of effecting a minute lateral adjustment of the paper and the side edge guides to effect such alignment. The marginal alignment of the letters referred to is indicated by the dot and dash line in Fig. 1 which will be hereinafter referred to more in detail.

The means for rapidly and accurately positioning the paper to receive the first line of the address will now be described.

In order that the platen may be accurately aligned in the carriage, the N0. 50 Remington machine is provided with bearings for the platen shaft that are mounted for fore and aft adjustment-on the end plates 1. in the present instance the left-hand bearing is cur ployed, as in the usual construction. The right hand bearing, however, is somewhat modified in order to provide for mounting certain devices of the present invention thereon, without interfering with the bearing performingits usual function and being ads justed in the usual manner. Thus, from an inspection of Fig. it will be seen that a hearing plate or disk 37 is provided which is circular in outline and receives a bearing on a pivot screw 38 connected to the right hand end plate 1. This bearing plate has a central bearing opening 39 in which the platen shaft 40 is supported in .the ordinary manner. he lower edge of the plate 37, opposite the pivot 38, is recessed to receive an eccentric 41 provided with a hexagonal head 42 by which it may be turned around a pivot screw 43. The screw 43 is carried by the right hand end plate 1 and also constitutes a binding screw by which the eccentric 41 may be firmly held in its adjusted position. In accordance with the present invention I provide a chamber in the periphery of the disk or plate 37 and sup- '11; port concentrically hereinafter appear. The device 44 is apertured at 46 so that the eccentric 41 will not interfere with the circular adjustment of the device 44 around the axis of theplaten'whatever may be the adjusted position of the plate 37 and the device 44 will not interfere with thereon for any the adjustment ofthe plate 37. The device 44 carries a stop 47 which I prefer to adjustably connect to said device so that the stop may receive an independent adjustment desired fraction of a line space distance, for purposes which will presently appear. In the present instance, the stop projects laterally from the bodyportion or foot-piece 48 of a sheet metal bracket, said foot piece being tapped to receive the threaded stems of two headed binding screws 49. These screws pass freely through concentrically arranged slots 50 in the device 44, and the heads of the screws bind against the inner face of said device to firmly clamp the stop carrying bracket in theposition to which it may beadj usted around the axis of the platen on the device 44. A pawl 51 is mounted on a pivot screw 52 on the right handend plate 1 and has an engaging nose 53 adapted toenter any of the locking notches 45 which happens to be in register therewith. This pawl 1s pressed to its locking position .by a spring 54, and a finger piece55 on the pawl facilitates the disengagement of the pawl from the notch 45 in which it is locked. The pawl 51 thus locks the regulating device 44 in any of the different positions to which it may be rotatively adjusted," as determined by the notch 45 in which the pawl is seated.

Fixedly though detachably mounted on the platen shaft 40 adjacent to the regulating device 44 is a disk 56 having a smooth periphery, which friction or roller clutch. In the presentinstance this disk is detachably mounted on and fixed to the shaft 40 by the following means:

' A washer 57 surrounds the shaft 40 and maintains'the disk 56 and associated parts properly separated from the regulating device. A bushing 58 which is received in a tapped opening 1n the center of the disk, whereas the shoulder provided at the point where the reduced part of disk constitutes one member of a has a reduced threaded portion the bushing joins the 'enlargedcylindrical hub" thereof, binds firmly against the outer side of the disk when the bushing is screwed home in the tapped opening in the disk. The disk is thus firmly connected to the bushing and the latter is connectedto the platen shaft by two screws 59 that extend at right angles to each other into tapped openings in the bushing, and bear at their inner ends against flattened faces 60 on the shaft. The right hand finger wheel 5' has its hub 61 connected in):

to the shaft by screws 62 in a like manner, the inner end of said hub bearing against the outer end of the bushing 58 and holding it and the parts carried thereby against outward axial movement. When the screws 59 and 62 are loosened the right hand finger wheel and the bushing 58 and the part-s carried thereby may be slipped off the shaft. Mounted to turn freely on the bushing 58 concentrically with theaxis trolled actuating member or lever which in the present instance comprises two sheet metal parallel arms 63 and 64 on opposite sides of the disk 56 and free from binding action on the sides thereof. of the arm 63 is apertured to provide a bearing openingto receive and provide a pivotal support on the enlarged end of the bushing 58. The arm 64 has a smaller bearing opening to receive the inner reduced unthreaded end iii of the bushing 58, and thus provlde a pivotal support for the arm 64. These arms are rigidly united at their upper ends. As shown, a spacing washer 65 having a knurled periphery is received between armsand maintains them spaced apart. A screw bolt 66 is headed at asses through registering'openings in a handle 68, in the arms 63 and 64 and in the washone end 67 and,

of the platen is a hand conthe upper ends of the The lower end {is er 65. The threaded end of the bolt 66 coacts 1 1'3 with a nut 69 and by these means the handle, parallel arms and intermediate washer may be firmly clampedtogether. As best shown in Fig. 8 each of the arms 63 and 64 is cut out in one of the rear edges thereof, the cut-outs in both arms being identical. These cut-outs provide a recess in which a clutch roller 70 is loosely received, the roller being adapted to bear against the periphery of the disk 56 and being prevented from Xial displacement by two flanges 71 on the ends of the roller coacting with the outer faces of the arms 63 and 64. The upper wall 72 of the recess in each arm 63 and 6a is inclined to form a cam, both cams being identical and coacting with the upper side of the clutch roller. The lower Wall 72 of each recess is ineffective on the roller. A light wire spring 73 has its upper end seated and held firmly in a cut or slot 7 4 in the washer by closing or partly closing the mouth of the cut. The lower free end portion of this spring bears against the front of the roller and tends to force it rearward into clutching engagement with the inclined faces 7 2 and with the periphery of the disk 56. It will be understood that the force of this spring on the clutch roller 70 may be varied by looseningthe nut 69 and turning the knurled washer 65 until the requisite force is exerted by the spring 7 3. The nut 69 is then tightened, holding the washer in the position to which it has been rotatively adjusted.

The cross rod 3 has connected to the right hand end thereof an outwardly projecting pin 75 which projects to the right from the associated end plate 1 and extends in the path of the flanges 71 on roller clutch 70 as the latter returns rearward with its carrying lever to normal position, shown in Figs. t and 8. Such return movement of the lever and clutch roller is effected independently of the disk 56 and the platen, inasmuch as roller 70 at this time moves away from the bight or engaging position instead of towards it. The return movement of the parts just described is effected by a contractile spring 76 connected at one end to a pin .77 on the arm 63 and at its other end to pin .78 projecting from the associated end plate, 1 of the carriage. The power of the spring 7 6 is greater than that of the spring 78, so as to overcome the force of the latter when the parts are returned to the normal Fig. 8 position. The efiect of this is to arrest the clutch roller 70, by the pin 75, while the spring 76 overcomes the power of the spring 73 and continues slightly the motion of the arms 63 and 64, releasing the wedging action of the cams 7 2 on the roller 7 O. This frees the roller and holds it free from clutching engagement with the periphery of the disk 56, as shown somewhat exaggerated in Fig. 8. At this time, therefore, the roller clutch mechanism is maintained released, so that the platen, and the clutch member or disk 56 connected therewith, are adapted to be advanced in a line space direction (as indicated by the arrow (Z in Fig. 8) by the usual line space mechanism, or either of the linger wheels 5, without being interfered with by the hand actuated roller clutch mechanism.

Supported on a pivot 7 9 between the two lever arms 63 and 6 1 is a lever-like locking member 80 that has an engaging toe 81 adapted to coact with the clutch roller 70. fan outer contact edge 82 on said lockin member extends beyond the forward edges or the arms 63 and 6%. At the last part of the forward throw of said arms the edge 82 is brought into contact with the stop 4:7 located in the path thereof. The effect of this is to slightly turn the lockin member on its pivot relatively to the arms and force the toe 81 against the clutch roller 70. This results in forcing the roller with greater pressure against, or into more tenacious wedqing engagement with, the cam faces 72 and the periphery of the disk 56, thereby locking and holding the disk and the platen connected therewith against overthrow beyond the position where the parts are supposed to be arrested by the stop 4:7. This of course is a variable point depending on the adjustment ofthe stop 47 in the manner previously described. When the operator releases the handle 68, after turning the platen backward the predetermined distance in accordance with the setting of the stop 17, the spring 76 will return the handle to normal position independenty of the platen, leaving the latter free to be line spaced forward independently of the handle.

In the use of the machine, the parts will be set or adjusted in accordance with the work to be done and the position of the previously printed body portions of the letters, which of course will all be alike for any given ob in hand. Referring particularly to Fig. 1 it may be assumed that the line 9 represents the first line of the body portion of a letter previ ously printed by a multigraph machine on a letter sheet 7. If it be found that the position of the initial letter W in said line does not exactly accord with the letter spacing machine as asheet is fed from between the side guides 17, but is a fraction of a letter space off, then the thumb screw 86 may be turned in one direction or the other, shifting the carriage and platen until the initial letter in any of the lines 9, 1, z and 7' written on the machine has a marginal registration with the letter W in line 6, as indicated by the dotand-dash line 70. This adjustment may be quickly and accurately effected, and when effected for one sheet remains without change for all of the previously printed letter sheets of one batch.

Let it be assumed further that the operator desires to fill in the address and salutation lines 9 to j inclusive in the manner indicated in Fig. 1. It will be seen that these lines with the intervening spaces between the lines 6 and j and j and e occupy six single spaces, or a distance corresponding to six teeth of the line spacing wheel 7. The operator therefore releases the detent 51 and turns the stop carrier 44 anti-clockwise, as the parts are seen in Fig. 4, until the last or rearward notch 45 is brought opposite the nose 53 of the detent. The detent is then released to engage said notch and the parts are set ready to perform the work. A previously printed work sheet f is then fed forward in the machine until the line 6 registers with the line indicator 88, as shown in Fig. 1. The handle 68 is then pulled forward to the limit of its movement, determined by the setting of the stop 47. This results in effecting a back-- ward rotation of the platen exactly six line spaces, bringing the paper in position to begin writing the first line 9 is marginal alignment, as indicated by the line is, assuming that the carriage has been moved back to the right until arrested by the margin stops. After this line is completed the carriage is returned to the right and line spaced in the usual manner and so on for each of the successive lines it, 2' and jexcept that a double line space is effected between the lines i and j, leaving also a double line space between the last written line j and the first printed line 6 of the body of the letter. No further adjustment of the parts is required unless differently printed letter or like sheets having a different width of margin are used, or a different character of spacing is desired for filling in the addresses. However, a socalled block heading, spaced as indicated in Fig. 1, is the character of addressing most commonly used in this character of work, and the machine when once set requires no further adjustment, except in special circumstances as indicated above. However, by the various adjustments of the devices of the present invention they readily lend them selves to a wide variation in use, and such devices are available for rapidly filling in and accurately matching various forms of headings and the like.

The means by which a fractional adjustment of the stop 47 on its carrier 44 may be effected is, in the main, for the purpose of regulating each clutch mechanism to give the requisite extent of backward revolution to the platen, irrespective of the slight extent of lost motion of the handle from normal position required to render the clutch effective. This may vary slightly in different clutches, it being difficult, as a manufacturing proposition, to make all clutchesso that they will operate with the same deadly accuracy on all machines. Thus, for example, if one clutch should require a lost motion of, say, one-sixteenth of an inch to bring about an engagement thereof, and another clutch should require a lost motion of, say, one-thirty-sec- 0nd of an inch to engage it, the proper adjustment of the stops 47 on their carriers 44 willenable both clutches to turn the platen backward the same indentical extent from the same set position of both carriers 44. This independent adjustment of the stop 47 also will take care of any inaccuracies of manufacture of the carriers 44 or the cutting of the locking notches 45 therein.

The use of the spring is not essential, but T prefer to employ it in order to enable the adjustment between the carriage and feed rack to be more easily effected. It will be seen that the force of this spring is applied substantially in line with the pivots 22 and 25 and tends to relieve the parts of any lateral or binding strain in the relative adjustment between the carriage and feed rack.

From the foregoing description it will be understood that I have provided simple and highly effective means for attainment of the ends specified, which means are in the nature of attachments that may be readily embodied in existing machines, such as the No. 50 Remington machine, without modifying or materially modifying, the existing structural features thereof.

Various changes may be made, and some parts thereof may be employed without others, without departing from my invention .as it is defined in the accompanying claims.

What I claim as new and desire to secure by Letters Patent, is

1. The combination of a cylindrical platen,

the usual line spacing mechanism therefor, and an independently operable mechanism effective only for turning the platen back wards'a plurality of line spaces at each actuation, said mechanism comprising a friction clutch, a lever for closing said clutch and turning the platen backward, said clutch being inefiective to prevent the independent return movement of said lever to normal position, and adjustable meansfor predetermining the extent of backward ,movement that may be given the platen at each actuation of the lever.

2. The combination of a cylindrical platen, the usual line spacing mechanism therefor, and an independently operable mechanism effective only for turning the platen backwards a plurality of line spaces at each actuation, said mechanism comprising a friction clutch, a lever for closing said clutch andturning the platen backward, said clutch being ineffective to prevent the independent return movement of said lever to normal position, and an adjustable stop in the path of said lever to control the extent of its operating movement.

3. The combination of a cylindrical laten, the usual line spacing mechanism therefor, and an independently operable mechanism efiective only for turning the platen backwards a plurality of line spaces at each actuation, said mechanism compris-' ing a friction clutch, a lever for closing said clutch and turning the platen backward, said clutch being ineffective to prevent the inde pendent return movement of said lever to normal position, a part carried by said lever which coacts with a member of said clutch to force it into more tenacious engagement with its companion clutch member and thereby prevent overthrow of the platen, and means with which said part coacts to operate it at the last part of the actuating stroke of said lever.

4. The combination of a cylindrical platen, the usual line spacing mechanism therefor, and an independently operable mechanism effective only for turning the platen backwards a plurality of line spaces at each actuation, said mechanism comprising a friction clutch, a lever for closing said clutch and turning the platen backward, said clutch being ineffective to prevent the inde pendent return movement of said lever to normal position, a part carried by said lever which coacts with a member of said'clutch to force it into more tenacious engagement with its companion clutch member and thereby prevent overthrow of the platen, a stop with which said part coacts to operate it and arrest the lever at the last part of the actuating stroke of said lever, and means for effecting an adjustment of said stop to different set positions to determine the extent of backward movement to be given the platen at each operating stroke of said lever.

5. The combination of a cylindrical platen, the usual line spacing mechanism therefor, and an independently operable mechanism for turning the platen back- Wards a plurality of line spaces at each actuation, said mechanism comprising a roller clutch, a lever the movement of which in one direction engages the normally released roller clutch and turns the platen backwards a plurality of line spaces and the movement of which in the opposite direction frees the clutch and permits the handle to return independently of the platen, and means for limiting the throw of said lever.

6. The combination of a cylindrical platen, the usual line spacing mechanism therefor, and an independently operable mechanism for turning the platen backwards a. plurality of line spaces at each actuation, said mechanism comprising a roller clutch, a lever the movement of which in one direction engages the roller clutch and turns the platen backwards a plurality of line spaces and the movement of which in the opposite direction frees the clutch and permits the handle to return independently of the platen, and means coacting with a member of said clutch at the last part of the operating movement'of said lever to force the clutch members into more tenacious engagement and thus prevent overthrow of the platen.

7. The combination of a cylindrical platen, the usual line spacing mechanism therefor, and an independently operable mechanism for turning the platen backwards a plurality of line spaces at each actuation, said mechanism comprising a roller clutch, a lever the movement of which in one direction engages the roller clutch and turns the platen backwards a plurality of line spaces and the movement of which in the opposite direction frees the clutch and permits the handle to return independently of the platen, a device carried by said lever and eoacting with a member of said clutch to effect a more tenacious engagement between the members of the clutch, and an adjustable stop with which said device coacts at the last partof the actuation of said lever to actuate said device and arrest the lever.

8. The combination of a platen; and means for turning said platen backward a plurality of line spaces comprising a clutch member fixed to turn with the platen, a hand actuated l ver, a normally released clutch roller carried thereby, and an inclined face carried by said lever and coacting with said clutch roller to force it into en 'agement with said clutch member during a movement of the lever in one direction to effect a backward turning of the platen and freeing the clutch roller during a movement of the lever in the opposite direction.

9. The combination of a platen; and means for turning said platen comprising a clutch member fixed to turn with the platen, a hand actuated lever, a clutch roller carried thereby, an inclined face carried by said lever and coacting with said clutch roller to force it into engagement with said clutch member during a movement of the lever in one direction and freeing the clutch roller during the movement of the lever in the opposite direction, a device carried by said lever and adapt ed to coact with said clutch roller to force it into more I tenacious engagement, and means to cause said device to coact with the clutch roller at the last part of the operating movement of said lever.

10. The combination of a platen; and means for turning said platen comprising a clutch member fixed to turn with the platen, hand actuated lever, a clutch roller carried thereby an inclined face carried by said lever and coacting with said clutch roller to force it into engagement with said clutch member during a movement of the lever in one direction and freeing the clutch roller during the movement of the lever in the opposite direction, a pivoted device carried by said lever and coacting with said clutch roller to force it into more tenacious engagement and an adjustable stop coacting with said pivoted device to actuate it at the last part of the opcrating stroke of said lever to prevent overthrow oi the platen and also to variably arrest the platen in accordance with the adjustment of said stop.

11. The combination of a revoluble platen; the 'usual line spacing mechanism for advancing the platen; and means for turning the platen backward a predetermined number of line spaces, said means comprising a disk concentric with the platen and fixed to turn therewith, a hand-controlled spring-returned actuating lever mounted to turn on the axis of the platen, a clutch roller loosely carried by said lever and cooperative with the periphery of said disk, an inclined contact face on said lever that coacts with said roller to force it into clutching engagement with the disk during the movement of the lever against the force of its returning spring and to free itself from said roller during the return movement of said lever, a device pivoted to said lever and cooperative with said clutch roller to force it into more tenacious engagement with said disk at the last part of the eflective stroke of said lever, a stop adjustable around the axis of the platen and with which said device coacts to operate it and arrest the effective stroke of said lever, and a stop which coacts with said roller when the lever returns to normal position to force the roller out of wedging engagement with said disk and inclined contact face.

12. The combination of a revoluble platen; ine spacing mechanism therefor including a inc spacing wheel and means coacting therewith to advance the platen; and means for turning said platen backward a predetermined number of line spaces comprising a hand-controlled spring-returned lever mounted concentrically with the platen, a clutch controlled by said lever, a stop to release said clutch and limit the return movement of said handle, a member mounted to turn to difierent adjusted positions around the axis of said platen and having notches spaced to accord with the spacing of the teeth of the line spacing wheel, a releasable detent to engage in one or another of said notches and hold said member in its adjusted position, and a stop carried by said member and operative to arrest the effective movement of said lever and the backward movement of the platen.

13. The combination of arevoluble platen; line spacing mechanism therefor including a line spacing wheel and means coacting therewith for advancing the platen; and means for turning said platen backward a predetermined number of line spaces comprising a hand-controlled spring-returned lever mounted concentrically with the platen, a clutch controlled by said lever, a stop to release said cluteh and limit the return moveme: t of said handle, a member mounted to turn to different adjusted positions around the axis of said platen and having notches spaced to accord with the spacing of the teeth of the line spacing wheel, a releasable detent to engage in one or another of said notches and hold said member in its adjusted position, a stop carried by said member and operative to arrest the efiective movement of said lever and the backward movement of the platen, and means for ad justing said last mentioned stop on said member to any desired traction of a line space distance.

14. The combination of a revoluble platen, line spacing mechanism for advancing the platen, and separate means for turning the platen backward a predetermined number of line spaces, said separate means comprising a hand controlled actuating member, a clutch including a roller, means for engaging said clutch and turning the platen by a movement of said handle in one direction and for alibi-ding an independent movement of the handle in the opposite direction, and a stop which coacts with said roller when the actuating member is returned to normal position and thus releases the clutch and enables the platen to be advanced by its line spacing mechanism without interference fromsaid clutch.

Signed at the borough of Manhattan, city of New York, in the county 01": New York and State of New York, this 25th day of March,

JOSEPH PHELPS.

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