US1238919A - Type-writing machine. - Google Patents

Description

turning the carriage after the completion of the typewritten line from any desired intermediate position. The gearing for driving the carriage from the motor comprises a pulley 29, fixed to the motor shaft and connectedthrough a belt 30 to a sheave 31 on a shaft 32, to which shaft is also secured a sheave 33, connected through a belt 34 to a sheave on a clutch shaft Fixed to the shaft 36 is a member 37 ofa clutch which also comprises a memb er 38, loose on the shaft and shiftable into and out of engagement with the member 37 Fixed to the shiftable member 38 is a pinion 39, which runsin mesh with a rack 40 on the carriage for returning the carriage hnd operating the line-spacing mechanism.

The clutch is automatically operated to connect the motor to, return the carriage when the latter completes its letter-feed movement at the end of each line, the op eration of the clutch being controlled by .a left-hand margin-stop 41 and by a righthand margin-stop 11. The left-hand marcrum pin 60 to a rock arm 61, fast to a reel;- shaft 62. A coil spr ng ()4, attached the machine frame and to "the rod 58, forms an actuator for the rod and parts operated the rod 58' and alsolimits the upward move- "ment of said rod.

gin-stop 41 is slidably mounted on a rockshaft a2 and held in any desired position of adjustment by a rack 43, co6peratin with a pivoted dog on the stop, the dog belng actuated by a finger-lever 14. The rack bar 43 is pivoted by means of arms 45 at the ends of the rack bar to rock on the shaft 42, and is held up in its normal position by a coil spring i6 (see Fig. 5).

As the carriage approaches the limit of its forward movement, determined by the position of the margin-stop 41, a roller 4:7 on the carriage strikes a cam face 48 of the stop and depresses the rack bar sufficiently to operate a signal bell through the usual mechanism (not shown). When the carriage has about completed its forward movement, the roller 47 strikes a cam surface 50 on an arm 51 pivoted to the margin-stop, or a part carried thereby, said arm havin a lug 53 bearing on the rack thereby further depremes said rack bar. This movement of the rack bar causes a link 54:, pivotally connected to and depending from the rack bar, to be depressed. The link 54 is pivotally connected at its lower crumed at 56 on the machine frame. The free end of the lever projects under a pin 57 on a rod 58, so that when the link 54 is depressed, and the lever '55 thereby rocked, the latter, by engagement with the pin 57 swings the rod 58 upward about its fulcrum 60. The lever 55 .is preferably formed with a rounded surface 59, to engage the pin 57, so that the thrust on the pin 57 is always in an upward direction and bar 13, and,

end to the forward end of a lever 55, fulso that no material resistance may be offered by the lever 55 to free longitudinal m'ovement of the rod 58, while the pin 57 is thus engaged. The rod 58 is connected by its ful- The rod 58 is heldin the Fig. 5 position during the letter-feed travel of the carriage anduntil the latter, operates at the end the line to depress the liiik'5 1, as above described, and throughthe lever swings the actuating rod"58 upwardly about its pivot, and releases the shoulder 85. The spring 51 then moves therod 58 rearwardly and thereby rocks the arm and shaft 62. This operation' establishes a circuit for the motor by the following means? An arm 110, pivoted to the rock arm 61, and guided in the machine frame "179, is connected a hell 9 crank lever 1152 by means of a pin 111 on said arm engaging a slot in the lever. An arm of the hell-crank lever bears against an insulating block 114 on a switch arm 115, pivotally and electrically connected by a pivot 116 to a conductor 117. As the rock arm 61 is swung rearwardly the l-cranh 112 is operated and depresses the switch arm 115, and thereby brings a switch contact 118 thereon into engagement with a conducting bar 119, thereby establishing electrical connections between the bars 117 and 119, said bars being in the motor circuit, as hereinafter explained. The motor circuit is thus completed and the motor started.

Concomitantly with the closing of the motor circuit, the mechanism for closing the clutch 37, 38, is brought into operation for completing the driving connection from the motor to the carriage for returning the latter. Such mechanism will now be described. The rear face of the clutch part 37 isv formed with a can; 79, against which bears the upper end of a bell-crank lever 73, fulcrumed on a pivot rod 74.- and having an arm en. tending forwardly from said pivot rod. An arm 76 on the rod 7 1- is connected by a spring 77 to the arm 75, the movement of the arms 75 and 76 toward each other being limited by a stop 78 (Fig. .8) on the arm 75. The bell-crank lever 73 is held against the cam 72 by a spring"79, so that the rotating cam vibrates said lever and imparts vertical.

reciprocating motion to a latch lever 71 which is pivoted on. the arm 76. The n i end of the latch 71' is thus vibrated i3" it of a horizontal arm of a bell-crank lever 80', winch is fast on a rock shatt 81, supported on stationary bracket R. F. HOYT.

TYPE WRITING MACHINE.

APPLICATION EILED MAR, 15. I916.

Patented Sept. 4, 1917.

3 SHEETS-SHEET 2.

INVENTOR' ATTORNB/ LQQ QRQW WITNESSES:

R. F. HOYT.

TYPE WRITING MACHINE.

APPLICATION FILED MAR, 15. 1916.

Patented. Sept. 4, 1917.

3 SHEETSSHEET 3- H J 56 9 f 070/ O 1 6 y 1%; I i

J INVENTOR- WITNESSES 7 4 (Fm-A1. aw 2 Y fi fii/ ATTORN UNTTED SiTATE PATENT RICHARD F. HOYT, OF OLE'Y, PENNSYLVANIA, ASSIGNOB, BY MESNE ASSTGNMENTS, TO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. 55., A. CUE- PORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Original application filed January 19, 1915, Serial No. 3,031. Divided and this application filed March 15,

To all whom it may concern:

Be it known that I, RICHARD F. HoYT, a citizen of the United States, residing in ()ley, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Type-lVriting Machines, of which the following is a specification.

This invention relates to mechanism for controlling the return of the carriage of a typewriting machine, or of a combined typewriting and computing machine. The invention is herein shown as applied to a machine of the type shown in co-pending application No. 824.429, filed March 13, 1914, and embodies certain modifications and improvements in the mechanism shown in said application for controlling the carriage return.

As shown in said application, the carriage is automatically returned at the completion of each typewritten line, by means of an electric motor connected through suitable gearing, comprising a clutch to drive'the carriage. Means is therein provided to automatically actuate the clutch-shifter to close the motor circuit as the carriage completes its forward travel and to actuate the clutch when the motor starts. so that the carriage will be returned by the motor. A manual key is therein shown as provided to close the switch for the motor and to operate the clutch for causing the motor to return the carriage from any desired intermediate position. The electric motor of that machine is connected through suitable gearing, including a clutch. to a pinion running in mesh with a rack on the carriage for driving the latter. During the forward travel of the carriage, the motor may remain at rest, and as the carriage completes its forward run, may operate through suitable connections to establish a motor circuit and thereby start the motor. Right and lefthand adjustable margin stops determine the limits of travel of the carriage, and also have connected thereto, cams operated by the carriage to effect the closing and opening of the clutch at the completion. respectively. of the forward and return travel of the carriage. The left-hand margin stop is adjustable along a rack bar, which may be Serial No. 84,254.

swung downwardly by a projection on the carriage, striking the cam on the stop, and thereby swing forwardly a depending arm, connected with the rack, which arm controls a latch to effect the operation of the clutch. The latch is vibrated by means of a cam rotated by the motor, so that when the latch is moved to operative position its vibratory movement is transmitted to a clutchshifting lever to connect the clutch parts, and thereby effects a driving connection between the motor and the carriage. Connected to the righthand margin stop, for adjustment therewith, is a cam, operated by the carriage at the completion of the return movement, and operable through suitable connections to release the clutch. A manual key, controlling the return of the carriage from any intermediate position, may have connections for closing the switch in the motor circuit, and also for actuating the latch to efiect the operation of the clutch between the motor and the carriage.

One of the objects of the present invention is to provide means by which the action of the motor to return the carriage may be suspended or delayed after the carriage, on its forward travel, has reached the point where the carriage-returning mechanism is normally brought into activity. It is often desirable, when the carriage reaches this point, more especially in certain computing operations, to print a star and a word, or to make some other printed characters at the end of the line. This cannot be done if. on reaching that point. the carriage is immediately started on its return. The means provided in the presentinvention for ac complishing this delay or suspension of the automatic return of the carriage. comprises a margin button, or its equivalent. which may be set or actuated at will. to render ineffective the mechanism for establishing the motor connections. In its preferred form, .this feature of the invention comprises a push button. which may be held against the action of a: spring in aposition where it holds inoperative a setting device for the motor connections, which setting device normally released and brought into operation by the carriage when the latter reaches the limit of its normal forward travel. The

Patented lsept. 43-, L 91"? till 1 ll Il setting device is ready to perform its usual function as soon as the push button is released, after the additional writing has been made.

Another object of the invention is to provide a device which sets the connection from the motor to the carriage, with a spring or other actuator, so that it may operate independently of power derived from the carriage or the spring motor of the carriage, and may be positively held in effective position during the entire return movement of the carriage. To this end, in its preferred form, the setting device is spring actuated and is only tripped by the carriage, instead of being positlvely actuated thereby, as in the arrangement disclosed in the application above referred to.

.A further feature of the invention is to have the circuit-closing device alsooperated in the same general manner as the connec= tion-setting device just described, so that the circuit is maintained independently of the carriage and its spring motor.

Another object of the invention is to have the connection from the manually operated carriage-return. key (which forms part of the machine of the application referred to), of such a nature that continued pressure on the key during the carriage return is unnecessary, and -of 'such a nature that no force, other than a light touch, need be applied to the key when establishing the driving connections. In its preferred form, this feature of the invention comprises a spring operated device which is tripped and released by the key, and which, when so tripped, is thrown by its spring to establish the motor-driving connections and to close the motor-circuit.

It is a feature of the invention that one and the same device for establishing the carriage return drive from the motor, and for closing a circuit through the motor, may be, and preferably is, operable, not only by the carriage at the end of its normal forjunction-box for the electrical connections.

ward travel, but also by the manual key, to return the carriage from any intermediate point, and is also the device, the action of which may be suspended by the margin button. I

Other features and advantages will appear hereinafter.

This application is a division of my copending application Serial No. 3,031, filed January 19, 1915.

In the accompanying drawings, which illustrate one form of the invention,

Figure 1 is a part sectional side elevation of the machine.

Fig. 2 is a detailed View of the marginbutton device for suspending the action of the carriage-return mechanism.

Fig. 3 is a sectional detail view of the Fig. 4 is a diagrammatic View of the electrical circuits.

ing mechanism for controlling the carriage return, including the margin-gages, the clutch, the clutch-actuating and controlling mechanism, the switch in the motor circuit, and the margin-button, the parts being in the normal position assumed when the carriage has about completed its forward travel, but. before the return mechanism has been brought into operation.

Fig. 6 is a similar view, but showing the relation of parts during the return travel of the carriage, certain parts being, also omitted, to more clearly show the connections for restoring the mechanism to normal position at the completion of the return movement of the carriage.

Fig. 7 is a front perspective view, showing certain of the parts shown in Fig. 5, but with the margin-button operated to suspend the return of the carriage. I Fig. 8 is a view in side elevation, showing the parts in the position assumed during the return movement of the carriage.

The character keys 1 are mounted on key levers 3,. fulcrumed at 5 and connected through bell-cranks 6 to the type-bars 7 on mounted on the carriage 12, which travels on 100 front and rear guide-rails 13- and 14, respectively. A roller 15 on the platen frame runs on a platen-shift rail 16, the latter shiftable Fig. 5 is a front perspective view, showup and down by the usual mechanism, to

move the platen and its frame between upper and lower-case positions. The carriage, may be driven in a letter-feed direction by the usual spring motor (not shown), connected through a drawband to the carriage. The forward movement of the carriage may be controlled by the usual letter-feed mechanism (Fig. 1), comprising escapement dogs 18, cooperating with an escapement wheel 19, these dogs being actuated by a universal bar 20, moved rearwardly at each type stroke by a heel 17 on the actuated type-bar. The operation of the type-bars permits a step-bystep rotation of a pinion 21, connected to rotate in a forward direction with the escapethe carriage rack 22, whereby a letter-feed travel of the carriage is effected. Tabulator mechanism may be provided, which comprises keys 23 on levers 24:, fulcrumed at 25,

and at their rear ends extending beneath 12 5 vertical stop bars 26, which when the keys bar 27 onthe carriage.

Anelectric motor M is provided for -re- 130 -ment wheel 19 and running in mesh with turning the carriage after the completion of the typewritten line from any desired intermediate position. The gearing for driving the carriage from the motor comprises a pulley 29, fixed to the motor shaft and connected through a belt 30 to a sheave 31 on a shaft 32, to which shaft is also secured a sheave 33, connected through a belt 3 1 to a sheave on a clutch shaft 36. Fixed to the shaft 36 is a member 37 ofa clutch which also comprises a memb er 38, loose on the shaft and shiftable into and out of engagement with the member 37. Fixed to the shiftable member 38 is a pinion 39, which runs in mesh with a rack 10 on the carriage for, returning the carriage hnd operating the line-spacing mechanism.

The clutch is automatically operated to connect the motor to return the carriage when the latter completes its letter-feed movement at the end of each line, the operation of the clutch being controlled by a left-hand margin-stop 41 and by a right hand margin-stop 11 The left-hand man gin-stop 41 isslidably mounted on a rock-.

shaft 12 and held in any desired position of adjustment by a rack 43, cooperating with a pivoted dog on the stop, the dog being actuated by a finger-lever 1 1. The rack bar a3 is pivoted by means of arms 15 at the ends of the rack bar to rock on the shaft 42, and is held up in its normal position by a coil spring 16 (see Fig. 5).

As the carriage approaches the limit of its forward movement, determined by the position of the margin-stop 41, a roller 47 on the carriage strikes a cam face 18 of the stop and depresses the rack bar sufiiciently to operate a signal bell through the usual mechanism (not shown). When the carriage has about completed its forward movement, the roller 417 strikes a cam surface 50 on an arm 51 pivoted to the margin-stop, or a part carried thereby, said arm having a lug 53 bearing on'the rack bar 43, and thereby further depresses said rack bar. This movement of the rack bar causes a link 54, pivotally connected to and depending from the rack bar, to be depressed. The link54 is pivotally connected at its lower end to the forward end of a lever 55, fulcrumed at 56 on the machine frame. The free end of the lever 55 projects under a pin 57 on a rod 58, so that when the link 54 is depressed, and the lever '55 thereby rocked, the latter, by engagement with the pin 57 swings the rod 58 upward about its fulcrum 60. The lever 55 .is preferably formed with a rounded surface 59, to engage the pin 57, so that the thrust on the pin 57 is always in an upward direction and so that no material resistance may be offered by the lever 55 to free longitudinal movement of the rod 58, while the pin 57 is thus engaged. The rod 58 is connected by its fulactuator for the rod 58 and parts operated by the rod, said springacting to throw the rod rearwardly, when a'slioulder on the rod is lifted out'of engagement with a fixed holding member or keeper 66. A cut 88 in the holding member provides for "agement of the latter with the SllOLllClBr 55 of the rod 58 and alsolimits the upward move ment of said rod.

The rod 58 is lieldin the Fig. 5 position during the letter-feed travel of the carriage and until the latter, operates at the end of the line to depress the link 54, 213 above described, and through the lever swings actuating rod 58 upwardly about its pivot, and releases the shoulder 65. The spring 6a then moves therod 58 rearwardly and thereby rocks the arm 61 and shaft 62. This operation establishes a circuit for the motor by the following meansi An arm 110, piv oted to the rock arm. 61, and guided in the machine frame 179, is connected a bell crank lever 112. by ineans of a pin 111 on said arm engaging aslot in the lever. An arm of the bell-cranklerer bears against an insulating block 114 on a switch arm 115, pivotally and electrically connected by a pivot 116 to a conductor 117. As the rock arm 61 is swung rearwardiy the bell-crank 112 is operated and depresses the switch arm 115, and thereby brings a switch con tact 118 thereon into engagement with a per end of a bell-crank lever 78, fulcrumed on a pivot rod 7 1 and having an arm eittending forwardly from said pivot rod. arm 7 6 on the rod 7 1 is connected by a spring 7 7 to the arm 75., the movement of the arms 75 and 76 toward each other being limited by a stop 78 (Fig. .8) on the arm 75. The bell-crank lever; 7 3 is held against the cam 72 by a spring 79, so that the rotating cam vibrates said lever and imparts vertical reciprocating motion to a latch lever 1. which is pivoted on the arm 76. The up end of the latch 71 thus vibrated in The latch 71 is normally in position to clear the bell-crank 80 before the motor starts, and when the shaft 62 is rocked by the actuating bar 58, a rock arm 69 on the shaft 62 swings forwardly a link 70, connecting the arm 69 with the latch 71, so that the latter is swung against the bellcrank 80. As the latch is carried downwardly by the arm 76, set into vibration when the motor starts, said latch swings beneath the bell-crank 80, so that when the arm 76 again rises, the bell-crank is swung rearwardly, and a knob 83, on the upper end of the bell-crank, which runs in an annular groove 84 in the hub of the pinion 39, carries said pinion rearwardly, and connects the clutch members 37, 38. The pinion 39, being thus connected to the motor, drives the rack bar 40 to return the carriage.

The line-space mechanism (Fig. 8) may comprise a ratchet wheel 90 driven by a dog 91 pivoted on a slide bar 92, actuated by a line-space lever 93. The line-space mechanism may also be operated automatically, when the carriage is returned, by any approved means, as, for example, the mechanism disclosed in the patent to Kunath, No. 836,932, dated November 27, 1906.

When the carriage has about completed its return movement, the clutch parts 37, 38 are disconnected'and the motor circuit opened by the following mechanisnd':

Referring to Figs. 5 and 6, the right-hand margin-stop 41 is mounted on the shaft 42 for adjustment lengthwise of the carriage, and is held in adjusted position by a rack 125, with which engages a pawl (not shown), pivoted to the margin-stop and operated by a finger-piece 126. Connected to the margin-stop, for adjustment therewith, is an arm 127, splined on the rockshaft 42, said arm carrying a cam 128 in the path of the roller 47 on the carriage. The arm 127 may be connected with the marginstop by a clip 129, fixed to said stop and entering a notch in the arm 127, such connection permitting the arm to rock with the shaft 42 and relatively to the margin-stop. As the carriage nears the limit of its return travel, determined by the adjustment of the margin-gage 41 the roller 47 strikes the cam 128 and rocks the arm 127 and with it the shaft 42, thereby swinging forwardlv a depending arm 130 fixed to the shaft 42. A link 131 connects said arm 130 with a rock arm 132 on the shaft 81, and so rocks the bell-crank 80 and causes the latter to separate the clutch parts 37 and 38, thereby interrupting the driving connection between the motor and the carriage.

The rocking movement of the shaft 42, when the margin-stop 41- is depressed, is transmitted to the shaft 62 through connections, comprising a rock arm 133, depending from the shaft 42, and a link 134 connecting the arm 133 with the upper end of a lever 135, pivoted at 136, and having its lower end connected through a link 137 to a rock arm 138 on the shaft 62. The shaft 62 is thus rocked in the reverse direction to that in which it was rocked by the spring 64, whereby the actuator 58 is moved forwardly, so that the shoulder 65 thereon again engages its keeper 66, whereby the actuator is reset. The forward movement of the actuating rod 58 also operates the bell-crank 112, to release the switch arm 115, and permits the latter to be swung to open position by its spring 120.

For returning the carriage from any desired intermediate position, there is provided (see Fig. 1), a manual key 140, connected by a pin 141 working in a slot 142,

with a bell-crank lever 143, pivoted at 141 to the machine frame. The vertical arm 145 of this lever has a cam surface 146 at its upper end toengage a dog 147 (Fig. 5), connected by a pivot 148 to the forward end of the bar 58. A stop pin 149 on the bar' limits the pivotal movement of the dog 147, so that as the bell-crank arm 145 swings for ward, when the key 140 is depressed, said dog, and with it the forward end of the bar 58, is cammed upwardly, thereby disengaging the shoulder 65 from its keeper 66 and releasing the bar 58 to the action of the spring 64. The latter, through the connections heretofore described, actuates the switch and clutch-controlling mechanism, to establish a motor circuit and a driving connection from the motor to the carriage for returning the latter.

The key 140 is returned and held in normal position by a spring 153 (Fig. 1), which position may be determined by a stop 154. The pivotal connection of the dog 147 with the bar 58 permits the dog to tilt and pass the arm 145 as it strikes the latter during the return of the parts to normal position. It will be noted that the key lever 143 hasno connections to any of the other mechanism and that all movements resulting from operation of the key lever are effected by the motor, except the movement of the slide bar 58, which is effected by the spring 64. This arrangement renders unnecessary any continued depression of the key 140 and also makes the operation of the latter extremely light.

It is often desirable that after the can riage reaches the end of its normal travel in letter-feed direction, a margin-button be used, so that additional letters or words may be printedbefore the parts are delivered to the return action of the motor. Such margin-button is particularly useful as applied to combined typewriting and computing machines, wherein it is customary to print a star and a word or other characters after certain computing operations. Obviously,

if, at the end of the normal forward travel of the carriage, the roller 47 were invariably to release the slide bar 58 to the action of the spring 64, this purpose could not be accomplished. In order, therefore, to delay or suspend, as long as may be desirable, the action of the slide bar 58, the following attachment to the margin-button is provided.

Referring to Figs. 1, 2, 5, 7 and 8, the margin-button 155 is provided, having a coil spring 156 to hold it in normal position and return it to such position after operation. Opposite and adjacent to the rear end of the button 155 is a lever 157 connected to the machine frame by a pivot 158, the upper arm of which lever is turned or twisted to present a cam surface 159 t6 the button, by means of which the lever 157 is rocked about its pivot when the button plunger is pushed rearwardly. In the normal I position (Fig. 5) of the slide bar 58, in which the shoulder 65 is engaged by its keeper 66, a slot 160 in the arm 58 is opposite the end of the lower arm 161 of the lever 157. "When the button 155 is actuated and rocks the lever 157, the arm16l enters the notch 160, as shown in Fig. 7. If at this time the roller 17 on the carriage, by engagement with the cam 50, causes the slide bar 58 to be lifted to release the shoulder 65, the slide bar 58 will be prevented from moving rearwardly in response to the spring 64 a sufficient distance to establish the motor circuit or operate the clutch mechanism. A slight rearward movement of the bar 58, sufficient to carry the shoulder 65 beyond the holding surface 66, may be permitted before said bar is stopped by the lever 157.

It will thus be seen that by holding the button 155 depressed, the return movement of the carriage is prevented, so that a star and a word, or other writing, may be made after the carriage has reached its normal limit, determined by the setting of the margin-gage 41. As soon, however, as pressure is removed from the margin-button and the latter is released to its spring 156, a leaf spring 162 throws the lever 157 out of engagement with the bar 58, said lever being.

moved against a stop 163. The slide bar 58 is thus released to the spring 64, putting into action all the operations which were held in abeyance by the margin-button.

The typewriting machine frame 17 9 may be supported on a casing 180. To permit the removal of the typewriting machine from said casing, the lower ends of the electrical contact bars 117, 119 (Figs. '1 and 5), are bent forward at their lower ends, as shown in Fig, 1, to rest on contact bars 182, 183 (see Figs. 1 and The bars 182 and 183 have electrical connections with binding posts 186 and 187, which enter a junctionbox 188. Extending into the junction-box is a cable 200, carrying the mains 201, 202, err

tending from any suitable source of rent supply 203 (Fig. 4c), the conductors 261, 202 being connected, respectivel to binding post 204. and the binding post 187. A cable 205, entering the junction-box, car ries the conductors 206, 207, leading from the motor M and connected, respectively, to

Bil

scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, it claim:

1. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage comprising a clutch normally set to render the driving connection inoperative, means normally in.- operative, for setting the clutch from the motor to render said drivlng connection operative, a normally inoperative device, having an actuator lndependent of the carriage mechanism, forrendering the clutch setting means operative, and means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering said last-named device to its actuator.

2. In a machine of the character described, the combination witha carriage, of a motor, a carriage-return driving connec tion from the motor to the carriage comprising a clutch normally set to render the driving connection inoperative, means nor-- mally 1noperative,. for setting the clutch from the motor to render said driving con nection operative, a normally inoperative device, having an actuator independent of the carriage mechanism, for rendering the clutch setting means operative and for clos-- ing a circuit through the motor, and means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for deliven ing said last-named device to its actuator.

3. In a machine of the character described, the combination with a carriage,

a motor, a carriage-return driving connection from the motor to the carriage comprising a clutch normally set to render the driving connection inoperative, means normally inoperative, for setting the clutch from the motor to render said driving con nectlon operatlve, a spring-actuated device for. renderlng the clutch setting means o has completed a predetermined forward travel for delivering the spring-actuated device to the action of its spring.

4. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage comprising a clutch normally set to render the driving connection inoperative, means normally inoperative, for setting the clutch from the motor to render said driving connection operative, a spring-actuated device for rendering the clutch setting means operative and for closing a circuit through the motor, and a trip operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering the spring-actuated device to the action of its spring.

' 5. In a machine of the character de scribed, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage comprising a clutch normally set to render the driving connection inoperative, means normally inoperative, for setting the clutch from the motor to render said driving connection operative, a normally inoperative device, having an actuator independent of the carriage mechanism, for rendering the clutch setting means operative and for maintaining. the same operative during thecarriage return movement, and means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering said.

last-named device to its actuator.

6. In a machine of the character described, the combination With a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a normally ineffective device, having an actuator independent of the carriage mechanism, for maintaining a circuit through the motor during the carriage return movement, and means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering the circuit-maintaining device to its actuator.

7. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a spring controlled'device for establishing a circuit through the motor, and a trip operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for releasing the circuit-establishing device to the actlon of its spring.

8. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a spring controlled device for establishing a circuit through the motor, a trip operated by the traveling mechanism at or about the time the carriage has completed apredetermined forward travel for releasing the circuitestablishing device to the action of its spring, and key-controlled means for tripping said circuit-establishing device irre spective of the position of the carriage.

9. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the .motor to the carriage, a normally ineffective device, having an actuator independent of the carriage mechanism for establishing a circuitthrough the motor during the carriage return movement, means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering the circuit-establishing device to its actuator, and key-controlled means for delivering the circuit-establishing device to its actuator irrespective of the position of the carriage.

10. In a machine of the. character described, the combination With a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a normally ineffective device, having an actuator independent of the carriage mechanism for establishing a circuit through the motor whereby the motor is caused to return thecarriage, means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering the circuit-establishing device to its actuator, and key-controlled means forsuspending at will the action of said circuit-establishing device and permitting such action at will after the carriage has completed said predetermined forward travel.

11. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a spring-controlled device for establishing a circuit through the motor, a trip operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for releasing the circuit-establishing device to the action of its spring, and key-controlled means for ma pending at will the action of the springcontrolled device and permitting such action at will after said device has been tripped by the traveling mechanism.

12. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a

pleted a predetermined forward travel, for releasing said bar to the action of its spring,

a lever adapted to be swung into interlocking engagement with said bar to prevent movement thereof, a spring normally holding said lever out of engagement with said bar, and a margin key for interlocking at will said lever and bar to suspend the carriage return.

13. In a machine of the character described, the combination with a carriage, of a motor, a carriage-return driving connection from the motor to the carriage, a normally ineffective device having an actuator independent of the carriage mechanism, for establishing a circuit through the motor whereby the latter is caused to return the carriage, means operated by the traveling mechanism at or about the time the carriage has completed a predetermined forward travel for delivering the circuit-establishing device to its actuator, key-controlled means for suspending at will the action of said circuit-establishing device and permitting such action at will after the carriage has completed-said predetermined forward travel, and means whereby the carriage may have a letter-fed movement during the period of such suspension.

14. The combinationwith a carriage, of a motor to return the carriage, an adjustable margin stop to limit the forward travel of the carriage, a clutch between the motor and l the carriage, mechanism for controlling the closing of the clutch, a device adjustable with said margin stop and actuated by the carriage, and means set by said adjustable device but operated independently thereof for governing said controlling mechanism.

15. The combination with a carriage, of a motor to return the carriage, an adjustable margin stop to limit the forward travel of the carriage, a clutch between the motor and the carriage, a device adjustable with said margin stop and actuated by the carriage, a

means set by said adjustable device but 0 erated independently thereof for setting tiie clutch, and means actuated by the motor to connect the clutch members when the clutch has been set.

16. In a machine of the class described, the combination with a carriage, of a motor, gearing between the motor and carriage comprising a clutch, means controlled by the carriage to automatically start the motor, a member reciprocated by the motor, a

latch carried thereby, and means set by the

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