US2533153A

US2533153A - Carriage return mechanism for record making machines

Info

Publication number: US2533153A
Application number: US786826A
Authority: US
Inventors: Oscar W Swanson
Original assignee: Underwood Corp
Current assignee: Underwood Corp
Priority date: 1947-11-19
Filing date: 1947-11-19
Publication date: 1950-12-05
Anticipated expiration: 1967-12-05

Description

Dec. 5, 1950 Filed Nov. 19, 1947 O. W. SWANSON CARRIAGE RETURN MECHANISM FOR RECORD MAKING MACHINES 5 Sheets-Sheet 1 I N V EN TOR. (gym/2 n4 SWANSO/V ATTO R NEY Dec. 5, 1950 o. w. SWANSON I CARRIAGE RETURN MECHANISM FOR RECORD MAKING MACHINES 3 Sheets-Sheet 2 Filed Nov. 19, 1947 W W J M W 0 ATTORN E Y Dec. 5, 1950 o. w. SWANSON CARRIAGE RETURN MECHANISM FOR RECORD MAKING MACHINES 3 Sheets-Sheet 3 Filed Nov. 19, 1947 I E'NVENTOR did/1A W. SWANJfl/V Patented Dec. 5, 1950 CARRIAGE RETURN MECHANISM FOR RECORD MAKING MACHINES Oscar W. Swanson, West Hartford, Conn., as-

signor to Underwood Corporation, New York, N. Y. a corporation of Delaware Application November 19, 1947, Serial N0. 786,826

17 Claims.

This invention relates to record printing machines of the class having a carriage which is movable in one direction to shift the position of the printing mechanism transversely of a work sheet and in the opposite direction to return the printing mechanism to position for starting another line.

The invention relates more particularly to power operated carriage return mechanism for such machines.

The principal objects of the present invention are to improve the construction and mode of operation of power operated carriage return mechanisms for machines of the above class and to produce a novel mechanism which will operate in a reliable manner to return the carriage alternatively to any one of two or more returned positions.

Other objects of the invention are to provide a carriage return mechanism for record printing machines, having a projectible stop for engagement with a co-operating arrester to arrest the return movement of the carriage, with novel and improved mechanism for projecting said stop, with novel and improved mechanism for holding the stop in projected position and with novel and improved mechanism for releasing the stop.

to enable the same to be retracted to normal position.

Another object of the invention is to provide an improved power operated carriage return mechanism constructed to enable the carriage to be returned to full return position or to one or more partial return positions and particularly adapted for use on typewriting machines of the so-called Elliott Fisher type in which the work is supported on a fiat platen and the type mechanisms are mounted on a carriage which is movable transversely across the machine and over the platen in one direction to letter space and in the opposite direction to return the same to position to start the next line of writing.

A still further object of the invention is to produce a carriage return mechanism for typewriting machines of the Elliott Fisher type having a control mechanism by which the driving and stopping of the carriage may be more easily and conveniently controlled than in prior carriage return mechanism for machines of this particular type. 7

With the above and other objects in view, the invention consists in a machine embodying the novel and improved features, constructions and combinations of parts hereinafter described and particularly pointed out in the claims, the

2 advantages of which will be readily understood by those skilled in the art.

The invention will be clearly understood from the accompanying drawings illustrating the invention in its preferred form and the following detailed description of the construction therein shown.

In the drawings,

Fig. 1 is a perspective view illustrating certain parts of a typewriting machine of the Elliott Fisher type embodying the invention.

Fig. 2 is a view in side elevation partly in section illustratin the type carriage, the carriage return mechanism and certain devices for controlling said mechanism and the stopping of the return movement of the carriage,

Fig. 3 is a view similar to Fig. 2 illustrating certain of the parts in different positions,

Fig. 4 is a detail view in side elevation illustrating a portion of the mechanism shown in Fig. 3, with certain of the parts removed to show more clearly the structure, and

Fig. 5 is a detail view in side elevation illustrating one of the carriage return keys and the associated key bar detached from the machine.

The invention is illustrated in this application as embodied in a machine having the same gen-' eral construction arrangement and mode of operation of parts as the machine disclosed in the patent to Foothorap No. 1,904,127, dated April The machine illustrated in this application 1s provided with a flat platen 2 mounted in a rectangular platen frame comprising a pair of parallel side bars 4 suitably supported on a standard,

not shown. A portion of each bar is toothed to form a rack 5 engageable by traction gears 6. fast on a shaft 8 extending transversely of the side bars and supported by bearings in brackets,

one of which is shown at It! projecting upwardly from the rear portions of the side members of the rectangular line space frame l2. This shaft also carries wheels l4 engaging tracks I6 formed on the side bars 4 and the front rail I8 of the line space frame is likewise supported by wheels (not shown) engaging said tracks to enable the line space frame readily to move forwardly and rearwardly along said tracks.

The front and rear cross rails l8 and 20 support a key carriage 22, shown in dot-and-dash lines in Fig. 1 for travel across the platen 2 in letter spacing direction and return, on front and rear wheels 24.

The key carriage contains the customary key actions, ribbon mechanism and controls for the in letter spacing direction under control of, ther escapement mechanism.

Power drive The key carriage 22 may be manually returned to the left-hand margin from any point to which it has been advanced in letter spacing direction, but to relieve the operator of the work of returning the carriage, a motor 3i? is provided, convenientlymounted on a casting (not shown) secured to and projecting rearwardly from the rear rail 20 of the line space frame l2 with which it travels;

Referring to Fig. 2 of the drawings, power from the" motor is taken from the worm 32' fast on the motor shaft 34% and meshing with. a worm gear 36 having, a friction clutch connection 38 with a countershaft it journaled in the casting and extending'forwardly beneath a carriage return rack Msecured to the flanged rear end of an apron 44' projecting from the deck as of the key carriage 22.

A wide carriage return. pinion 43,.journaled on the forward end ofthe'countershaft cc and axially movable along the shaft; meshes with the teeth of the carriage return rack d2 at all times, the return pinion having a peripherally grooved collar 59' terminating at its rear end in a driven clutch member 52' normally disengaged from a driving clutch member 54 fast on the countershaft.

The free end of a clutch shift finger 56 lies in the groove in the sliding" rotatable collar 55, thefinger being secured to a clutch shifting shaft 58 j'ournaled' in the motor support casting; A clutch shifting arm at on one end of the clutch shifting shaft 58 is provided with a lateral locking lip 52 normally engaged by a locking latch 64'pivoted on a trip shaft G6 extending across: the machine and supported in bearings projecting from the back of the rear rail 2%! of the line space frame. A fan-shaped trip arm 58 secured to the trip shaft fit extends rearwardly between twostuds l9 and i2 projecting respectively from the hooked latch Gd and from the clutch shiftingj arm 56; a normally tensioned spring id connecting the two studs to form a yielding link therebetween and normally maintaining the hooked latch 6.4 engaged with the clutch shifting arm' 60 to retain the clutch members 52 and 54' disengaged.

Control of automatic carriage return mechanism Curved arms i6 projecting upwardly and forwardly from the trip shaft fit support a tripping ball 18 toothed at its opposite ends and rocking with the shaft 66. Mounted on the right-hand end of the tripping bail is a cam block as (see Fig. 1) arranged to be engaged by a roll 82 projfecting downwardly from the carriage apron.

" In the normal position of the parts, the hooked latch 64 is engaged over the lip 62 of the clutch shifting arm 60, as shown in Fig. 2, the trip shaft 68 is retained in its limiting counterclockwise position, and the tripping bail I8 is retained in its rearmost position by the action of the spring 14. As the carriage 22, traveling in letter spacing direction, advances the printing point toward the extreme right-hand margin of the work sheet, the roll 82 wipes across the inclined face of the. cam" block 30' and rocks the bail forwardly thereby rocking the trip shaft es in a clockwise direction, Fig. 2.

The rearwardly projecting trip arm 68 is swung upwardly by the rocking movement of the trip shaft. 66; to disengage the hooked latch B l from the clutch shifting arm 6! and, in so doing, additiona'lly tensions thespring M, which spring, acting'as-a tension link-,swings the arm 3% and rocks theclutch shifting shaft 58 and its clutch shifting. finger 56. counterclockwise, Fig. 2, to slide the driven member 52 of the carriage return clutch along the counter shaft to into engagement with the driving member 54, the carriage returnpinion iiibeing of sufiicient width to maintainitsi engagement with thecarriage return-rack:

throughout the clutch shifting action.

The motor: as is preferably of. the constantly running typeand will then drive the carriage. in contra-letter spacing direction. toward. the left:- hand side of the machine. As the carriage approaches the end of. its return movement under the influence, of the motor 30,. the tripping ball 78 is swung back rearwardly to its. normal. posi-- tion.. During thisoperation, the tripping arm 63 is pressed; against the stud, 1.2 onthe clutch shift-- ing. arm 69 androcks; said arm together with. the; clutch shiftingv shaft 58 and clutch finger: 55 in a clockwise. direction, Fig.v 2,v to. cause the. finger to disengage the driven clutch member 52 from the driving clutch; member 55, thereby disconnecting the motor at from the traveling carriage 22.,

The spring 14 tends to draw the hooked latch 64': downwardly, as the tripping arm. 68 is swung downwardly and, when the arm. E56, reaches a certain position, the latch snaps down over the lip. 62. on said arm to lock thev clutch shift mechanisnnandhence the clutch. members, in disen' gaged positions.

Allv of. the mechanisms. above described have substantially the. same construction, arrange-- mentand. mode. of: operation as the; corresponding mechanisms of the machine illustrated and:

v described, in, the patent. to Oscar J. Sundstrand,

No..2,30l,.7:l6,,dated November 12, 1942,

The. mechanism for swinging the tripping bail 18. rearwardly as the carriage. approaches they end. of its return movement will. be hereinafter described- Partial. carriage return The present machine is provided not only with mechanism for automatically returning the carriage toposition to begin the typing of a line, but is alsoprovided with mechanism for stopping the carriage in fully returned position or in either of two partial return positions at different distances to the right of its fully returned position. In carrying out the invention, three carriage return keys are mounted on the key carriage. By the respective actuation of these keys the carriage return mechanism will be thrown into operation and the return movement of the carriage will be caused to be arrested with the carriage in any one of three different return positions, the stop position being selected by the actuation of the appropriate key.

The keys controlling the return under power of the carriagefrom any advanced position to a absence:

selected precedent position are mounted'on the traveling carriage 22 and are arranged in a novel manner to enable the selection of any of several precedent positions to which the carriage may be returned. These three keys are indicated respectively at 84, 86 and 88 and are mounted respectively on vertically slidable key bars 90, 92 and 94. These keys are arranged to be independently depressed. The depression of each key, through intermediate mechanism, swings forwardly the tripping bail I8 to engage the driven member 52 of the carriage return clutch with the driving member 54 of said clutch.

The mechanism for actuating the trippin bail to engage the carriage return clutch from the depression of any one of the keys comprises an arm 96 fixed to a horizontal rock shaft 98 journaled in bearings on the key carriage frame, said arm depending through a slot in the apron 44 to a point in proximity to and behind the tripping bail I8. The shaft 98 extends part way across the rear of the key carriage toward the left-hand side thereof and, at its left-hand end, carries a radial arm I00 secured to the shaft. Upon this arm is mounted a pin I02 arranged to be engaged by the cam faces of the teeth I04 of a toothed cam wheel I06 journaled on a pin or stud I08, supported at its inner end on a plate II8 secured to the side plate III of the key carriage. By the rotation of the cam wheel I06 in a clockwise direction, Fig. 2, the pin I02 is engaged by oneof the teeth of the cam wheel and the arm I60, the rock shaft 98 and the arm 96 are swung in a counterclockwise direction to swing forwardly the trip bail I8 to engage the carriage return clutch.

A one-tooth rotation is imparted to the cam wheel I86 by the depression of any one of the three carriage return keys. The mechanism for imparting this rotation to the cam wheel comprises a longitudinally movable bar or slide H2, the rear end of which is supported on a headed pin II'4 fixed to the supporting plate H0 and engaging in a slot II6 formed in the rear portion of the bar. The forward end of the bar H2 is supported upon one arm of a bell crank IIB pivoted at I20 upon a screw stud also fixed in the supporting plate IIO. Upon the rear end portion of the bar H2 is pivoted at I22 a pawl I24 having an arm I26 formed with a downwardly extending tooth and arranged to engage the teeth of the cam wheel I06. Pawl I24 is acted upon by a coil spring I28 which tensions the pawl in 'a direction to maintain the arm I26 constantly in engagement with the teeth of the cam wheel.

The bar II 2 is acted upon by coil spring I32 which tends to move the same rearwardly. The movement of the bar rearwardly under the influence of the spring I36 is limited by the engagement of the pin II4 with the forward end of the slot II6. Thus the sprin I38 maintains the bar normally in the position shown in Fig. 2, the arm I26 of the pawl I24 then resting upon the outer end of one of the teeth of the cam wheel I06. The bar I I2 is moved forwardly to the position shown in Fig. 3 by swinging the bell crank lever I I8 in a clockwise direction. During the forward movement of the bar, a one-tooth rotation is imparted to the cam wheel I06 by the action of the tooth on the arm I26 of the pawl I24 on a tooth of the wheel. When the bar H2 is in normal re-'- tracted position, the pin I92 on the arm I86 is engaged between two of the teeth of the cam wheel I06, as clearly shown in Fig. 2. During this rotation of the cam wheel, the cam face of one of the teethengages the pin I02 and forces the same in a rearward direction. This swings the arm I00, the rock shaft 98 and the arm 96 in a counterclockwise direction, thereby actuating the tripping bail T8 to ngage the carriage return clutch.

The bell crank lever H8 is swun in a clockwise direction to engage the carriage return clutch by the depression of any one of the

keys

84, 86 and 86. The key bar 90 (see Figs. 2 and 5) is mounted for vertical sliding movement upon the side of the type carriage by means of pins or studs I32 and I33 fixed at their inner ends in the plate II 0 and engaging in slots I34 and I36 in said bar. The key bar is normally held in elevated position by means of a coil spring I38. The key bar is providedwith a lateral projection I46 arranged to engage a laterally bent flange I42 formed on the bell crank lever II8 to swing the bell crank in a clockwise direction as the key bar is depressed.

The key bar 92 (see Figs. 2 and 3) is mounted to slide vertically upon the side of the type carriage by means of the studs I32 and I33 which engage in slots I44 and I49 in the key bar. This key bar is acted upon by a coil spring I48 which normally maintains the key bar in an elevated position. This key bar is provided with a lateral projection I53 arranged to engage the laterally bent flange I42 on the bell crank lever II8 to swing the bell crank to engage the carriage return clutch upon the depression of the key bar.

The key bar 94 (see Figs. 2 and 4) is mounted to slide vertically on the side of the type head by means of the studs I32 and I33 which engage respectively in slots I52 and I54 in the key bar. This key bar is acted upon by coil spring I55 which normally maintains the bar in elevated position. The key bar is provided with a lateral projection I571 arranged to engage the laterally bent flange I42 on the bell crank lever II8 to swing said lever in a clockwise direction upon the depression of the key bar to engage the carriage return clutch.

Upon the depression of the key 84, the carriage is given a full return movement and is arrested in its limiting left-hand position. The carriage is arrested in different returned positions, each short of a complete return to the left-hand mar ginal position, following the depression of either of the

keys

86 or 88. a

When the bar H2 is moved to the right by the depression'of one of the keys, it is latched in its right-hand position by a suitable latch mechanism. The latch is actuated to release the bar as the type carriage approaches the end of its re-' turn movement. The bar is then moved rearwardly to its normal position by the action of the spring I36. During this rearward movement of the bar, the inclined rear face of the arm I26 engages the cam face of the tooth I04 of the Wheel I66 immediately to the rear of said arm and the arm rides over the tooth and finally drops down to the position shown in Fig. 2 with the tooth on the arm located to the rear of the tooth on the wheel, as shown in Fig, 2.

The mechanism for arresting the return movement of the carriage with the carriage in full return position or in either of two partial return positions comprises a verticaliy movable check stop I56 mounted on the carriage and arranged to engage any one of a series of arresters mounted on the draft rod I58. The check stop I56 is formed at the lower endof a slide I60 mounted for vertical sliding movement on the supporting plate Hi and on the downwardly extending portion of an an le bracket It! secured to the lower left-hand corner of the type head. To provide for this sliding movement, the upper end of the slide I66 is formed with a slot I62 in which engages a headed stud I64 fixed to the plate H8. The check stop is held in position with relation to the bracket, lfil by means of a guide plate 65, the inner face of which is vertically grooved to accommodate slidingly a laterally extended portion of the stop,

The mechanism co-operating with the check stop R58 to arrest the return movement of the carriage has substantially the same construction, arrangement and mode of operation as the corresponding mechanism illustrated and described in the patent to Sundstrand No. 2,283,401, dated May 19, 1942. Said mechanism comprises the draft rod E58 extending transversely of the line space frame. This rod is T-shaped in crosssection and is arranged to slide in a channel formed by the rear rail 23 of the line space frame, the web 1&8 projecting forwardly therefrom and the carriage escapement rack l'le being secured to the forward edge of said web. The, left-hand end portion of the draft rod I58 is toothed for a considerable distance and arresters 112, I74 and [76 of different heights are adjustably arranged on the draft rod to be engaged by the check stop I56 to arrest the carriage during its return movement at any one of three precedent positions and also to effect a line-spacing operation incident to its return to any such precedent position. Arrester H2 of least height is located farthest to the right, and arresters il and I76 of successively greater heights are mounted on the draft rod in corresponding order to the left of the arrester H2. These arresters preferably have substantially the construction illustrated and described in said Patent No. 2,283,401 to enable them to be readily adjusted longitudinally on the draft rod.

The left-hand end of the draft rod 158 passes through an aperture in a rearwardly turned slotted projection lid on the left-hand end of a slide I89 extending therefrom toward the right along the front face of the carriage escapement rack N53 to which the slide is connected by headed fastenings i82 engaging in slots $4 in the slide. The slide operates to guide the draft rod in its endwise travel and prevents it from canting in its channel.

The draft rod is provided at its right-hand end with a threaded portion I86 passing through a block [33 secured to the forward face of the arresting plate E93, the draft rod being fixed in said block by means of nuts [92 threaded on the rod and located upon opposite sides of the block. The arresting plate I99 is provided with parallel slots 19 and I96 in which engage respectively supporting and guiding members Hi8 and 269 extending from the line space frame to support and guide the plate.

The arresting plate I86 is formed with a beak 282 which projects toward the left from the upper left-hand edge of the plate into position to collide with a forwardly extending fixed stop 294 (Fig, l) rigidly secured to the right-hand end of the rear rail 20.

A coiled spring 286 attached at one end to the fixed stop and connected at its opposite end to the draft rod. 658 yieldingly retains the arresting plate let, the draft rod and the slide I80 at their right-hand limits of travel as determined by contact of the left end wall of the slot I94.

8.. in the arresting plate with the guide member 198.

When-the opfi fatonat any point in the advance of the carriage, desires to return the carriage to its limiting left-hand position or to give a full return movement to the carriage, he depresses the key 84 and the key bar 99 to their limiting positions determined by the engagement of the pin 133 with the upper end of the slot I38. During the downward movement of the key bar; the bell crank M8, bar H2, pawl I24, toothed wheel Hi6; pin :82, arm [90, shaft 98 and arm 98 are actuated to swing forwardly the carriage return bail i8 and thereby engage the carriage return clutch to initiate the return movement of the carriage. After being actuated by the key lever, the parts of the clutch engaging mechanism between the arm 96 and the clutch are maintained in position until the carriage approaches the end of its return movement. The check stop 5% is not depressed by this operation but remains in its uppermost position.

During the return movement of the carriage, the check stop 5% passes over the graduated arresters H2 and iii; and finally engages the highest arrester N6, the location of which on the draft rod determines the beginning of a line of writing.

The check stop E56, when in its elevated position, will clear the arresters H2 and 174 during the return movement of the carriage and will engage the arrester lit to stop the carriage in full return position. The check stop is depressed to one predetermined position such that it will clear the arrester W2 and will engage the arrester I14 during the return movement of the carriage by the depression of the key 86. The check stop is depressed to another predetermined position such that it will engage the arrester H2 during the return movement of the carriage by the depression of the key 88.

The mechanism for depressing the check stop comprises a bell crank lever 2E8 pivoted on a stud 2 I Q fixedat its inner end in the supporting plate lid. The lever 288 is formed with a slot H2 in the rearwardly extending arm thereof in which engages a headed pin 2M secured in the slide Hit. The upwardly extending arm of the bell crank lever 283 is connected by a link 2H5 with a lever 21s pivoted at 22%? on the supporting plate 5 Hi. The link 2 i6 is acted upon by a coil spring 23! which tends constantly to move the link and the lever 2E8 forwardly. This lever carries a roller 222 arranged to be engaged by the rear edge of a plate 225 adjustably pivoted at 226 on the key bar Q2 and held in adjusted position by means of a screw 2Z8 engaging in a slot 230 in the plate and threaded into the key bar. The plate 224 is formed with a cam face 232 arranged to engage the roller 222 during the first part of the downward movement of the key bar and with a face 23d substantially parallel with the direction of movement of the key bar which engages the roller 222 during the latter part of the downward movement of the bar.

As the key bar 92 is moved downwardly by the depression of the key 86, the lever 218 is swung. about its pivot 2213, in a clockwise direction, by the engagement of the cam face 232 with they roller 222 to actuate the bell crank lever 208 to depress the slide I89 and the check stop to a position in which the check stop will pass over the arrester H2 and will engage the arrester 114 during the return movement of the carriage.

' When the check stop has been projected into ass rts position to engage the arrester I14, the stop is held in projected position while the key 86 and key bar 92 are depressed by the engagement of the roll 222 with the edge face 234 of the plate 224.

The rear edge of the key bar 94 is also arranged to engage the roller 222 on the lever 2E8.- In order to depress the check stop by the downward movement of the key bar 94, the bar is formed with a cam face 236 (see Fig. 4) arranged to engage the roller 222 during the early part of the downward movement of the key bar from elevated position. The key bar 96 is also formed with a face 238substantially parallel with the direction of movement of the bar which is engaged with the roller 222 during the latter part of the down ward movement of the key bar.

By the depression of the key 38 and key bar 94, the lever H8 is actuated through the cam face 236 to project the slide I60 and check stop I56 downwardly to a position in which the stop engages the arrester I12 during the return movement of the carriage.

- When the check stop has been projected into position to engage the arrester 112, the stop is held in projected position while the key 88 and key bar at are depressed by the engagement of the roll 222 with the edge face 238 of the key bar.

It is highly desirable that mechanism should be provided for holding the check stop I56 in either of the positions into which it is projected respectively by the depression of the

keys

86 and 88 after a depression and release of either of said keys. Otherwise, it would be necessary for the operator to maintain each of these keys in de pressed position during the return of the carriage to stop the carriage in the desired partial return position. In the present machine, this result is secured by providing mechanism for holding each of the key bars 92 and 94 in depressed position following its depression substantially until the completion of the return of the carriage. The mechanism for holding down these key bars also operates, after the depression of key 84, to hold down the key bar 92 during the return of the carriage although this key bar does not control the check stop. The mechanism for holding down the several key bars and corresponding keys, during the return of the carriage, is operated to release the keys bars at the end of the carriage return movement.

The mechanism for holding down the key bars when depressed respectively comprises a projection or locking lug 240 formed on the forward end of the longitudinally movable bar H2.

The key bars 90, 92 and 94 are formed respectively with laterally projecting locking lugs 242, I

244 and 246 for co-operating with the lug 24!}. When a key bar is depressed thereby actuating the bell crank H8 to move the bar H2 longitudinally forward or to the right, Figs. 2 and 3, the corresponding locking

lug

242, 244 or 246 extending laterally from the bar is depressed below the projection 24!) and said projectio is moved forwardly above said locking lug as shown in Fig. 3 by the forward movement of bar H2. The key bar thus will be held down by the engagement of the locking lug on the bar I I2 with the projection 245 as long as the bar I I2 remains in forward position. The locking of the key bars 92 and 94 in depressed position will also lock the. check stop, which is controlled by said key bars, in depressed position.

The forward movement of the bar H2. which locates the projection 240 above the laterally extending locking lug on the depressed key bar,"

also locates said projection below the corresponding locking lug on the other two key bars. These key bars therefore are then locked against depression while the bar I I2 remains in its forward position.

The bar I 52 is held in its forward position, following the depression of a key bar, during the return of. the carriage until the tripping bail I8 is swung back rearwardly to disengage the carriage return clutch. The bar H2 is released at this time and allowed to move back to its rear posithan under the influence of spring I30.

The disconnection of the motor from the carriage is automatically effected, regardless of the extent of return travel of the carriage, by a mechanism adapted to function just prior to the arrest" of the carriage at any of its completely or partially returned stations. The said mechanism comprises a floating thrust bar 248 slidably supported adjacent its left-hand end in an eye 255 formed in a bracket secured to and projecting from the adjacent vertical bracket It on the line space frame. right-hand end as at 252 to ride on the rear end of a stud 254 projecting rearwardly from and travelling with the arresting plate I95. The lefthand end of the thrust bar is arranged to engage an inclined cam face on a member 256 secured to the right-hand end of the trip bail 18 in the path of travel of the thrust bar.

The length 01' the slot 252 in the thrust bar is less than the distance normally between the beak 202 and the fixed stop 264. Therefore, as

the arresting plate IQil is drawn to the left by contact of the check stop I56 with one of the arresters I72, I14 or I16, the supporting stud 254 will travel idly along the slot 252 of the thrust bar until shortly prior to the arrest of the plate I92 by contact of the beak 202 with the stop 204, the supporting stud 254 reaches the left end wall of the slot 252. Thereafter, the continued movement of the arresting plate I shifts the thrust K rod to the left against the inclined face of the contact member 256 On the trip bail and rocks the trip bail back to its normal position, thereby disconnecting the shiftable driven clutch member of the carriage return clutch from the driving clutch member.

When the bar I I2 is located in its normal or rear position, the upper edge of the latch is held in-. engagement with a laterally bent projection 252 5 formed on the bar, as shown in Fig, 2. When the bar H2 is moved forwardly upon the depression of one of. the key bars, the latch is swung up-- I wardly behind the projection 262 to latch the bar in forward position, the upward movement of the latch then being limited by the engagement of an arm 26E extending rearwardly from the body of the latch with the pin I52.

rearward movement of the bail then swings the arm 96, the shaft 98 and the arm III in a clock.-

The thrust bar is slotted at its The latch holds the bar H2 in forward position until the tripping bail I8 is swung rearwardly to disengage the carriage return clutch, as above stated. The

wise direction. During this clockwise swinging movement of the arm !00, the pin I62 on said arm engages a cam-shaped edge portion 255 formed on the arm 266 and swings the latch in a clockwise direction about the stud I66, thereby disengaging the forward end of the latch from behind the projection 262 on the bar H2. The bar is then moved back to its rearward position by the action of the spring I30.

Thus following the depression of one of the key bars, the bar I I2 is held in forward position and the key bar and the check Stop I56 are held in depressed positions during the return of the carriage until the check stop has engaged one of the arresters I72, I74, I16 and the draft rod I58 has been moved some distance to the left, Fig. 1. The leftward movement of the draft rod moves the stop plate I90 to the left and, during the lat ter part of the movement of said plate, the plate picks up the thrust bar 248 and said bar is actuated to engage the inclined face on the contact member 2'56 to swing back the carriage return or tripping bail 18.

The parts of the present mechanism are constructed and arranged so that, when the latch 258 is in its upper or latching position and the carriage return bail is in forward position, the latch is actuated to disengage the projection 262 on the bar H2 and thereby release said bar for rearward movement to unlock the depressed key during the latter part of the rearward movement of the bail by which the carriage return clutch is disengaged. As shown in Fig. 3, the bail I8 is located in spaced relation to the arm 96 when the carriage return clutch is engaged and the latch is in its upper position. After the latch is thrown out, the upward movement of the slide I60 is delayed until after the first part of the upward movement of the depressed; key bar by the engagement of the edge of the key bar substantially parallel with the direction of movement of said bar with the roller 222. These features of the present mechanism are provided to prevent the projectible stop from being elevated out of engagement with the arrester until the return movement of the carriage is completely arrested.- W v Normally, after the arrest of the return moves merit of the carriage, the slide I60 will be moved upwardly by the action of the spring 23 I on the link 2I6 and the bellcrank 208 to elevate the projectible stop I56. In the event that the fricnon between the check stop and the arres'ter prevents the elevation of the slide I60 upon the arrest of the return movement of the carriage, the friction between these parts will be relieved sufil'ciently' to allow the slide I60 to be actuated to elevate the check stop upon the movement of the carriage for a relatively slight distance in letter-spacing direction.

It is to be understood that the construction shown and described in this application is merely illustrative of the invention and that the several features thereof, except a defined in the claims, are not limited to the particular construction and arrangement of parts of the illustrated embodi-- ment of the invention butthat the invention may be embodied in other forms within the scope of the claims. I

Having explained the nature and object of the invention and having specifically described a ma chine embodying the various features of the in'-' vention, in their preferred forms, what is claimed is:

1 a record making machine;- a transversely movable carriage, mechanismfor moving-the-car riage in one direction during a record making operation, power mechanism for imparting re turn movements to the carriage, two or more independently operable manipulative devices for rendering operative said power mechanism, means common to all said devices and movable thereby for retaining an operated one of said devices in actuated position during the return of the carriage and means operated by said car riage for releasing automatically said devices.

2. In a record making machine, a transversely movable carriage, mechanism for moving the carriage in one direction during a, record making operation, power mechanism for imparting return movements to the carriage, two or more independently operable manipulative devices for rendering operative said power mechanism, means common to all said devices and movable thereby into a position for retaining an operated one of said devices in actuated position during the return of the carriage, latching means for said retaining means, and means operated by said carriage adjacent the end of the carriage return movement for releasing said latching means.

3. A record making machine comprising a carriage, means for moving the carriage transversely of the machine during the making of a record, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the carriage in different returned positions, two or more independently operable manipulatve devices for controlling said stopping means to arrest the carriage selectively in any one of the diiferent returned positions, means common to said devices for retaining an operated one of said devices in actuated position during the return of the carriage and means for releasing automatically said devices.

4. A record making machine comprising a carriage, means for moving the carriage transversely of the machine during the making of a record, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the carriage in different returned positions,- two or more inde pendently operable manipulative devices for controlling said stopping means to arrest the carriage selectively in any one of the different re,- turned positions, means common to said devices and moved thereby for retaining an operated one of said devices in actuated position during the return of the carriage, latching means for said retaining means and mechanism for throwing out of action said latching means to release said re taining means and said device adjacent the end of the carriage return movement.

5. In a record making machine, a carriage movable in opposite directions across the machine, means for moving the carriage across the machine in one direction during a record mak-' ing operation, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the carriage, a first manipulative device, a second manipulative device, means common to both said devices and operable thereby for causing the power mechanism to return the carriage and for controlling the stopping means to stop the carriage substantially in one or the other of two predetermined positions, mechanism for retaining each of said devices and said common means, after being actuated, in actuated position during the return of the carriage and means for releasing automatically said devices and said common means.-

6. 111 a record making n-i-achine, a, carriage movable in advance and return directions transversely of the machine, means-for moving the carriage transversely of the machine in one direction during a record making operation, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the carriage, a manipulative device means operable thereby for causingthe power mechanism to return the carriage and for controlling the stopping means to stop the carriage substantially in a predetermined position, a second manipulative device engageable with said operable means for causing the power mechanism to return the carriage and for controlling the stopping means to stop the carriage substantially in another predetermined position, mechanism for retaining each of said devices and said operable means, following their actuation,in actuated position during the return of the carriage, and means for releasing automatically said retained devices and means adjacent the end of thecarriage return movement.

7. A record making machine comprising a carriage movable transversely across the machine, means for moving the carriage in one direction during a record making operation, power operated mechanism for returning the carriage comprising engageable and disengageable driving connections, a bail extending in a direction transversely of the machine and fixed in said direction, mechanism operated by the bail for engaging and disengaging said connections, means comprising a rotatable toothed cam wheel for shifting said bail, manipulative means and mechanism operated by said manipulative means for rotating the cam wheel.

8. In a record making machine, a transversely movable carriage, mechanism for moving said carriage across the machine in one direction during a record making operation, power actuated mechanism, normally disconnected from the carriage, for moving the carriage in the opposite direction to return the same, manipulative means, a rotatable multi-toothed cam wheel, mechanism driven by said manipulative means upon each manipulation thereof for rotating said cam wheel one tooth space, and means operated by said toothed cam wheel for connecting said power actuated mechanism with said carriage.

9. A record making machine comprising a carriage mounted for movement across the machine, mechanism for advancing the carriage during a record making operation, mechanism driven by power and normally disconnected from the carriage for returning the carriage, a plura'ity of manipulative devices, a rotatable multi-toothed cam wheel, mechanism driven by each of said devices upon manipulation thereof for rotating the cam wheel one tooth space, and means operated by said toothed cam wheel for connecting said power driven mechanism with said carriage,

10. In a record making machine, a carriage movable in opposite directions across the machine, means for moving the carriage in one direction during a record making operation, power driven mechanism for imparting return movements to the carriage, means for connecting the carriage with said power driven mechanism including a, rotatable toothed cam wheel, a pawl for rotating said wheel, a manipulative device and means operated by each actuation of said device to move the pawl to impart a partial rotation to said cam wheel.

11. A record making machine comprising a 14 carriage movable transversely across the machine, means for moving the carriage in one direction during a record making operation, power mechanism for returning the carriage in the opposite direction, mechanism for connecting the carriage with the power mechanism including a rotatable toothed cam wheel, a pawl for actuating the wheel, a support movable in opposite directions upon which said pawl is movably mounted, manually controlled means and mechanism operated by the latter means for shifting said support to cause the pawl to impart a partial rotation to the wheel. I

12. A record making machine comprising a carriage mounted for movement across the machine, means for moving the carriage in one direction during a record making operation, power mechanism for returning the carriage comprising engageable and disengageable driving connections, a bail, mechanism operated by the bail for engaging and disengaging said connections, means comprising a rotatable toothed cam wheel for shifting said bail, a slide, a pawl movably mounted on the slide for engaging said wheel, a, manipulative device, means operated by said device for moving the slide in one direction to cause the pawl to impart a partial rotation to said wheel, a latch for holding the slide in operated position and means operated by the bail for disengaging the latch.

13. In a record making machine, a carriage, means for moving the carriage in one direction across the machine in the making of a record, power mechanism for imparting return movements to the carriage, mechanism for arresting the return movements of the carriage, means for controlling said carriage return and arresting mechanisms comprising a series of manipulative devices, a locking device for locking each of said manipulative devices, following its actuation, in actuated position during the return of the carriage, a latch for retaining said locking device in locking position and means for automatically relea-sing the latch.

14. In a record making machine, a carriage, means for moving the carriage in one direction across the machine in the making of a record, power mechanism for imparting return movements to the carriage, mechanism for arresting the return movements of the carriage, means for controlling said carriage return and arresting mechanisms comprising a series of manipulative devices, a locking device for locking each of said manipulative devices, following its operation, in operated position during the return of the carriage, a latch for retaining said locking device in locking position and means for automatically releasing the latch adjacent the end of the return movement of the carriage.

15. In a record making machine, a carriage movable in advance and return directions transversely of the machine, mechanism for moving the carriage across the machine in one direction during a record making operation, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the carriage comprising a projectible stop, a manipulative device and connections for projecting the stop, means for locking the device and thereby the stop in actuated position, mechanism operated by the actuation of said device for moving the locking means into locking position, a latch for holding the locking means in locking position during the return of the caremanate riage and means for automaticany throwing out the laltch.

16. Ina'r'ecord'makin'g machine, a transversely movable carriage, mechanism for moving the carriage'across the machine in one direction, power operated mechanism for imparting return moi/ein'ent's to the carriage, mechanism for arresting the return movements or the carriage comprising a projectible stop, manipulative devices anaconnec'tion's respectively for "projecting the stop to different stopping positions, means for locking each of said devices and thereby the stop in actuated position during the return of the carriage, mechanism oiie'rated byeach of said devices for m'diiin'g the locking "means into locking position, 'h-latch for holding the locking means "in looking position during the return of the carriage and means for automatically Tendering inactive the Ia'tich.

17. In a, "record making machine, a carriage movable "in bpposi'te directions 'across the machine, means for moving the carriage across the machine in one direction during a record making operation, power mechanism for imparting return movements to the carriage, stopping means for arresting the return movement of the car- 16 ria'ge at 'a predet'eri'nine'cilfosi'tiori,n, manipulative device, con ne'c'tions operated by said mahipul'a tive device forcaus'ing the power mechanism to return the 'c'a rriage, a second manipulative device for operating sa'id connections -for causing the power menzinism to retiirn the carriage and for controlling the stopping means to stop the carriag'e 's'iib's'tantially ina different predetermined position, mechanism "for retaining each of "said devices and said connections, after being actua'tedfln'actualted positiondurin'g the return of the carriage, kind means operated by said stopping mechanism for releasing automatically said retaining mechanism.

OSCAR W. SWANSON.

REFERENCES CETED "rue rohowing 'feferehc'es of record in the fife of "this bait-ant:

UNI-FED STATES PATENTS Number Name Date 1,164,630 parlm Dec. 31, 1915 2,233,949 Kurows'ki -QMeJr. 4, 1941 2,'2 58,;'7f1 5 Eitma'n Oct. 14, 1941 2,333356'6 Helmond Nov. 2, 1943