US667295A

US667295A - Type-writer.

Info

Publication number: US667295A
Application number: US60141496A
Authority: US
Inventors: Paul E Collins
Original assignee: HENRY A CLIFFORD; LYMAN H ATKINS
Current assignee: HENRY A CLIFFORD; LYMAN H ATKINS
Priority date: 1896-08-03
Filing date: 1896-08-03
Publication date: 1901-02-05
Anticipated expiration: 1918-02-05

Description

No. 667,295. Patented Feb. 5, 190|.` P. E. coLLlNs.

TYPE WRITER.

(Application led Aug. 3, 1896.)

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'-No. 667,295. .Patented Feb. 5, |90l.

P. E. COLLINS.

TYPE WRITER.

(Application me?. Aug. 3, 1896.) (No mmm.) '7 3i sums-snm 2.

m: Norms PETERS co. wUvo-Lnuo..wAsHx-moN. D. c.

No. 667,295, Patented Feb. 5, |90I.

I P. E. COLLINS.

TYPE WRITER.

(Appucac'io med Aug. 3, 1896.

(N o M o d el.)

3 Sheets-Sheet 3.

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vg: Nonms PETERS co. PHOTO-Lima. wAsNmc-mnn D c UNITED STATES PATENT OEEICE.

PAUL E. COLLINS, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF TWO-THIRDS TO LYMAN H. ATKINS, OF SAME PLACE, AND HENRY A. CLIFFORD, OF

MEDFORD, MASSACHUSETTS.

TYPE-WRITER.

SPECIFICATION forming` part of Letters Patent N o. 667,295, dated Iieloru'aryy 5, 1901.

Application filed August 3, 1896. Serial No. 601,414. (No model.)

To all whom t mfc/,y concern:

Be it known that I, PAUL E. COLLINS, of Boston, county of Suffolk, and State of Massachusetts, have in vented an Improvement in Type-Writers, of which the following description, in connection with the accompanying drawings, is a specilication, like letters on the drawings representing like parts.

The present invention relates to a typewriter, and is embodied in improved attachments therefor whereby the carriage after a line is written can be restoredA to its normal or initial position automatically, means being provided for winding,r the setting springs or u weights while a line is being Written or just after its completion and for releasing said store the carriage, the restoration thereof being thus accomplished by the action of said springs or weights instead of manually.

The apparatus embodying the invention is so arranged that the power required for operating the key-levers and for restoring the carriage on the completion of a line, or for either of said purposes, may be provided through the agency of a treadle or similar device adapted to be controlled by the operators foot or otherwise at any time during the travel of the carriage from its initial to its final position, or this may be accomplished by a main weight or spring which can be set or wound from time to time and which will operate to set the supplement-al springs or weights which directly accomplish the work, said main weight being adapted to operate step by step in response to a key on the keyboard cooperating with an escapement. Furthermore, the apparatus may be and preferably is so arranged that the weightof the operator, acting through suitable mechanism, is utilized as the initial power for intermittingly winding the supplemental springs, which operate as hereinbefore described, and this may be accomplished by mounting the machine on a movable platform, Vupon which the operator also sits, and by providing such platform with a counterpoise weight or spring, whereby it will be restored to its initial position when the operator steps down, so that the device is completely automatic.

The apparatus embodying the invention is of such a nature that it can be'readily ar'- ranged for application to any of the machines of the type which are commonly in use, but is herein shown and will be described as applied to a Caligraph, the construction and operation of which are well known and will need no detailed description except in so far as the operation of the devices embodying the present invention is related thereto. It is to be unde1stood,inoreover,that while the carriagerestoring devices and type-operating mechanism may be employed together in conj unction with a device for winding the springs which accomplish the actual work it is obvious that either of Said sets of devices may be used independently of the other. Furthermore, the proper operation of these devices when applied together or separately to a typewriter does not depend upon any specific form of winding or setting appliance, it being obvious that the springs may be wound by means of a treadle or similar device which can be controlled by the operator independently of the manipulation of the keys, or they may be wound by a main power appliance, such as a weight or spring, set or wound from time to time, as occasion requires-such, for example, as the means above mentioned for utilizing the weight of the operator for this purpose.

The invention further consists in certain minor details of construction, which will be hereinafter fully described.

Figure l is a side elevation of a type-writer and stand embodying the invention. Fig. 2 is a front elevation of the same. Fig. 3 is a front elevation, partly in section, on a large scale, of a sufficient portion of a Caligraph type-writer provided with the carriage-restorer and key-operating appliances forming the subject of the present invention to illustrate the construct-ion and operation thereof. Fig. 4 is a top plan vieW of the same. Fig. 5 is a side elevation, partly in section, looking toward the right. Fig. 6 is a side elevation, partly in section, looking toward the left. Fig. 7 is an enlarged sectional detail showing the escapement mechanism which controls the main power applied for IOO winding the carriage-restoring and key-operating springs, and Fig. 8 is a detail to be hereinafter referred to.

The restoring device for the carriage A consists, essentially, of a traveling member preferably comprising two separate parts a and b, adapted to travel along the front of the machine parallel with the carriagetracks and connected to a suitable spring or springs which are adapted to be wound up as the restoring device is moved from right to left by means of a cord or strap 0,'which runs over a pulley or drum c2 and is adapted to be pulled in any suitable way, as by a treadle controlled by the operators foot and connected with a cord cooperating with the said drum c2 or an automatic device, which will be hereinafter described. The restoring device is so arranged that it can be drawn to the left at any time to wind up the spring or springs, by the unwinding of which it is drawn from left to right, and means are provided whereby the said restoring device will engage and move the carriage to the right and will be disengaged therefrom after the carriage reaches the desired position.

The restoring device a b is mounted on a track or guideway B, consisting, preferably, of two rods extending longitudinally along the machine, the said rods (which also form a track or guideway for other devices which operate in conjunction with the restoring device hereinafter described) being supported from a frame arranged to be readily secured to and removed from a type-writer. The said frame comprises two brackets or supports B2 B3, the former consisting, as shown in Fig. 5, of a plate having a strengthening-ange B2O along the top edge thereof adapted to extend over the top of the type-writer frame and having a slot to form a guide for the cam g, hereinafter described, while the lower portion is provided with an upturned flange B21, thus forming a socket along the lower edge of said bracket into which the lower front edge of said frame is inserted, while the bracket is secured to the frame by means of a set-screw B22, as indicated in Figs. 3 and 5. The said bracket is provided with a spindle B23, extending out from the front face thereof and forming a bearing for the pulley or drum c2, and also with a projecting arm B24, in which is securedthe track orguideway B. The bracket B3, as shown in Figs. 3 and 6, is similarly secured to the type-writer frame by means ofa Set-screw B30, the said bracket having a projection B2l and a similar projection B32, which are adapted to support the spring or springs operating the restoring device, as will be hereinafter described,I the rods B being secured in an end plate secured to the projection B3l by supporting-arms B34, as shown in Figs. 3 and The part d of the restoring device, which consists, as shown, of a collar or collars movable along the track B, is connected directly with the cord c and is provided with an independent spring d2, one end of which is secured to a lug B35 on the bracket B3 and the other to the hub of a spool a3, connected by a cord a4 with the said part d, so that as the said part a, is drawn to the left it will wind the said spring, which in unwinding will act to restore the said part c to the position shown in Figs. 3 and 4. The part b is preferably provided with an independent spring b2, connected to a hub b2 upon a spindle b4, which is supported between the projections B3l and B32, the pulley d3 being preferably, for convenience, loosely mounted on said spindle and said spindle being also provided with a pulley b5, adapted to rotate therewith and connected bya cord or strap bi with the part b, so that as the said part is drawn to the left it will wind the said spring. The strap b may, if desired, be wound upon a drum i160, provided with a ratchet Z761 and pawl Z162 in order that the tension of the spring b2 may be adjustable. By this construction it is, obvious that the parts a and bare independently movable, so that if either ofsaid parts is drawn to the left and the other part detachably secured thereto it becomes possible by detaching said part to cause the same to restore the carriage. rlhus one of said parts may be drawn to the left at any time during the writing operation of the machine andthe other part may be drawn with it and when a complete line is written may be detached to restore the carriage.

Ashas been above stated, the part ct is positively actuated through the cord C, and in or- IOO der that the part b may be drawn to the left with the said part a the former is provided with a latch or hook b?, cooperating with a projection a5 upon the part a.. The said hook 177 is normally pressed toward the projection a5, so as to hook over the same, by a spring bs, so that asfthe part a is drawn to the left the part b will be drawn with it,vaud it is obvious that if means are provided for releasing the hook 197 when the restoring device reaches the proper position the part b will move to the right, owing to the stress of its spring, independent ot' the part c. If, therefore, the cord or strap c is drawn to the left and maintained there, it is obvious that the combined restoring device will be likewise held and that, assuming the carriage to be engaged by the part b and t-he hook released, it is obvious that the carriage will be restored to its normal position by the action of the spring b2. The part a can then be released and will return, owing to the stress of its own spring, and will automatically latch under the hook b2', ready for the next operation.

In order to cooperate with the carriage, the part l) is provided with a shoulder b9, which is adapted to engage with the side of a dog d, which is connected to the carriage preferably by means of a bracket or supporting-piece d2, secured upon one of the frame-rods of said carriage, the said dog being pivotally supported as between the forked ends d3 of the supporting-piecek d2, so that it is capable of IXO transverse movement with relation to the part b. This is obviously necessary in order that the said part b may be moved from the right to the left while the carriage is in any position, it being obvious that it would otherwise be necessary to draw the restoring device to the extreme left-hand position im mediately after the carriage is restored in order to allow the said carriage to move from right to left while the neXt line is being written. To this end the side of the projection which forms the shoulder b9 is provided with a camsurface blo, adapted as the part b passes to the left to engage the dog d and cause the same to travel outward along the said camsurface Z110 until it drops behind the shoulder b9, so as to be engaged by the part b during the movement thereof toward the right. After the carriage is moved to the right, however, it is necessary to disconnect the carriage and the restoring device in order that the former may be free to travel to the left as the next line is written. To this end the cam e is provided and adapted to engage the under side of the dog d, which, as shown, is capable of both vertical and lateral movement, the pivotal support thereof havinga stem d4, extending into an opening in the dog, which is secured thereto by means of a pin d5, extending laterally from said stern through a slot d6 in the dog, so that, as shown in Fig. 3, the said dog as the carriage moves to the right will ride up along the surface of the cam e until it is completely above the shoulder and disengaged therefrom. The said dog is provided with a spring CF, arranged, as shown, to resist both the lateral and vertical movement thereof, so as to maintain it in its normal position when not engaged by the cam e or the cam-surface bw. The resistance afforded by the frictional contact of the dog with the cam serves to gradually stop the carriage and prevent too sudden a stoppage thereof as it brings up against the usual stop. A buffer b is provided for the restoring device, said buffer being mounted on a movable frame, which will be hereinafter described.

In order to shift theplaten-roll for the paper at the completion of each line, a cam fis provided and adapted to engage the under side of the handle A2, which is commonly manually operated to turn the roll, so that the same is lifted by the cam and the roll turned. In order to prevent the carriage from being lifted by the cam instead of the handle being lifted independently thereof, a projection f2 is provided, extending over the carriage-frame and engaging the upper side thereof.

After the restoring device has been drawn 'to its extreme left-hand position it is necessaryin order to restore the carriage toits initial position to release the hook b7 and allow the part b to return,owing to the stress of its spring, and to accomplish this the said hook is provided with a projection Z270, adapted to cooperate with a sloping cam-surface g at the lspring after being thus disconnected.

end of a rod g2, operated byakey g3, the said cam being so arranged that when the key g3 is pressed down the cam will engage the projection Z170, turning the hook b7upon its pivot and disengaging the same from the shoulder a5. Assuming, therefore, fot-illustration, that the restoring device is adapted to be set in position to operate by means of a treadle or similar device controlled .by the operator, it will be seen that at any time after a line is begun the foot can be pressed down to carry the restoring device to its eXtreme left-hand position and held down, and after the line is finished the key g3 may be touched by the operator, thus drawing down the cam g, releasing the hook, upon which the carriage will at once be restored to its original position and the dog connected therewith thrown ont of engagement with the restoring device, so that the carriage is free to be operated for another line. The rod g2 is guided in suitable openings in the frame and supported by a spring g4, secured at one end to a projection g5 from said rod and at the other end to the frame, the key g3 being preferably secured to an arm g, secured to said rod g2. It may, however, be desirable in some cases to allow the carriage to be restored automatically upon reaching the end of the line, and to this end the key g3 is provided with a hook Q7, which can be caught under a cross-piece g8 (see Figs. 5 and 6) of the type-writer frame, so that the key is permanently held down and the cam g maintained in position to engage and unhook the part Z) as the carriage arrives at the extreme left-hand position.

By the operation of the devices thus far described it is obvious that each time the carriage is restored it will normally move to its extreme right-hand position, so that if it is desired to indent a line for the purpose of beginning a new paragraph it will be necessary to operate the space-bar a number of times in order to start writ-ing with the carriage in the properA position. To obviate this necessity, the machine is provided with means for disconnecting the carriage from its feed-controlling device after it has been moved a certain distance to the right and means forstopping the carriage at the desired position asit moves to the left in response toits actuating- In conjunction with this feature of the invention, which will be more fully described hereinafter, the cam e and the remainder of the dev-ice cooperating with the carriage while said carriage is obviously being moved toward the right are arranged to be shifted so as to stop the carriage approximately at the proper position instead of permitting the movement thereof completely to the margin. For this purpose these parts are mounted on a supplemental frame consisting of a portion h, mounted on the track B and capable of longitudinal movement with relation thereto, and a similar portion h2, connected therewith by a sleeve h3, the said portion h being con- IOO and set-screw e3, and the buffer Z711 is also secured to said portion 71.2, while the cam f and projection f2 are mounted on the main part h, the former being shown as provided with a stem]a8 in a socket b21, projectingfromthe frame, in which it is longitudinally adjustable, and held by a set-screw f4, thus enabling the operator by adjusting the height of the cam to regulate the throw of the roll for different widths of space between the lines. All these parts are therefore moved to the left as the arm 72.3 is depressed, and the carriage will accordingly be arrested before it reaches its extreme right-hand position.

The arm 7LB is provided with a key or fingerpiece 71,10, adapted to be pressed down by the operator to produce the movement above described of the frame h 71,2, and in order that the same movement may operate to restore the carriage the arm h8 is provided with a hook 7112, extending over the Lipper surface of the arm Q6, so that when the said arm hs is pressed down it will also actuate the cam g and release the carriage, which will be restored, as hereinbefore described, but arrested before it reaches its extreme righthand position, or, in other w ords, when it reaches such a position as to start an indented line. It is sometimes desirable,however, to start a line at a certain distance from the margin of the sheet-as, for eX- ample, a distance equivalent to ve spacesand at other-.times a greater distance-as, for example, a distance of ten spaces-and the arm hs may be so arranged that when it is depressed as far as its construction and arrangement will allow it will carry theframe 7L h2 to the left a maximum distance, and in order that the said arm may be depressed a less distance without exercise of judgment on the part of the operatorv a supplemental key 71,13 is shown as supported in the arm hs by means of a stem 7t1-4, extending through an opening therein, the said stem being adapted after the arm has been depressed a certain distance to come in contact with a portion of the typewriter frame, as indicated in Fig. 5, thus preventing a further downward movement of the said arm. As herein shown, the complete depression of the arm is adapted to move the frame 7L 71,2 forward such a distance that the carriage willstart at the ten-space on the scale, the key 7t13 being adapted to depress the arm a sufficient distance to' arrest the carriage at the five-space. As has been stated, however,

the nal arrest of the carriage at the proper position does not depend wholly upon the movement of the frame hb2, and the mean-s for positively positioning the carriage at the' proper initial position will now be described.

The feed mechanism of a typewriter consists, essentially, of what may be generically termed an escapement device,in which the carriage, adapted to travel owing to the stress of a spring connected therewith, is held stationary by a detent adapted to be moved at each operation of a key and arranged to coperate with the carriage in such a manner as to permit the forward movement thereof one space when the key is released. As the carriage is restored after its step-by-step travel in the' operation of printing, the relation of the detent thereto is substantially that of a pawl to a ratchet, and it is obvious that if means are provided for disengaging the pawl member of the device from the ratchet the carriage will move freely in response to its actuating device until arrested by a'suitable stop or be in engagement with the detent. The present invention provides a device for this purpose, which is herein shown and described as applied to the Caligraph feed mechanism, although it is obviously susceptible of application to other machines. This device is illustrated in Fig. 8, which shows a portion of the carriage-feed mechanism of the Caligraph arranged to operate in the manner described. Referring to said Fig. 8 and to Figs. 5 and 6, the carriage has connected thereto a rack 7c, adapted to be engaged by a late rally-movable tooth 7a2, pivoted on the arm 7c3, which in turn is pivoted at 7a4 and adapted to be rocked at each depression of a key upon the keyboard. The said detent 7a2 as it is rocked passes out of engagement withthe teeth upon a supplemental rack 765, where it normally stands, said supplemental rack being connected to said rack 7o, the connection being such that there is a lost motion provided for substantially equal to the distance between two adjacent teeth on each rack, the teeth on the said racks being uniform with one another. The supplemental rack 705 is connected by a spring k6 with the main rack 7c, the said spring being of sufficient strength to move the said rack 7e5 with relation to the rack 7c, but adapted to be overcome by the stress of the mainspring, which actuates the carriage and which is suitably connected to the rack 7c by means of an arm K, (indicated in Figs. and 6,) such arm being a portion of the Caligraph machine and not requiring further illustration. As a key is depressed, therefore, the detent 7a2 passes out from in front of the teeth on the rack 7c5, thus permitting a forward movement thereof with relation to the rack 7c; but before such movement takes place the said rack 7a is engaged by the said detent 7a2, which is of sufiicient width to bridge said racks and engage one before it releases the other, so that the rack 7c is held stationary during the printing operation. As the arm 7e3 moves back owing to the release of the key it will disengage the rack 7c and permit the forward movement of IIO the carriage, but will engage the supplemental rack 705 to arrest the movementI of the earriage, which is thus equal only to the amount of lost motion, or, as above stated, the space between two teeth. When the carriage is restored to its initial position, the detent 702, being pivoted to the arm 703, will allow the supplemental rack 705 to pass across its end as a ratchet travels by a pawl. It is obvious, therefore, that if the return movement of the earriage is stopped with said detent in any tooth of the rack the carriage when released will be stopped at the space corresponding to such tooth. Unless, therefore, in an ordinary construction the frame 7L h2 were positively moved to a certain definite position by the operation of the key 71.10 or h13 the carriage might overthrow and stop one or more teeth in the rear of the position desired. To prevent this, the supplemental rack in accordance with the present invention is provided with a plate 7050, provided with two or more notches 7051, the remaining surface of said plate being flat and extending slightly below the teeth of the rack 705, against the side of which the said plate is secured, as by screws 7052. When, therefore, the carriage is restored or moved to the left, as shown in Fig. 8, which is a rear view, it is obvious that the detent 702 will be disengaged from and prevented from falling into the'teeth along the plate or supplemental' piece 7050, since the edge of said detentwill engage the under surface thereof, except when it reaches a notch 7051. If, therefore, in restoring the carriage it is carried back far enough to allow a notch 705I upon the supplemental piece 7050 to travel by the detent 702, it is obvious that as the said carriage moves forward owing to the stress of its spring it will not be arrested until the said detent 702 falls into a notch 7051. Since, however, the movement of the detent 702 during the feed of the carriage is a lateral movement, it is obvious that when the key is depressed it will be carried away from the supplemental piece 7050 and engage with the main rack, and as it moves back to engage with the supplemental rack it will move laterally between the teeth thereof and will not be prevented in such operation by the presence of the supplemental piece 7050. With this arrangement, therefore, it is only necessary t-hat the frame 7i 712 when it is desired to stop the carriage at the five-space should be moved forward sulhciently to prevent said carriage from being restored to its extreme right-hand position, and if it is desired to restore it to the ten-space it is only necessary that the frame 71.71,2 should be moved forward far enough to prevent the said carriage from passing beyond the live-space.

The supplemental piece 7050 may, if desired, be adjustable along the rack 705, so that the spaces at which the carriage is to be arrested may be changed to ten and fifteen, fifteen and twenty, dto., the rod h5 being also adjustable bythe set-screw 7L, as above described, so that a corresponding movement of the frame 7L h2 may be secured. The plate 7050 thus constitutes means for disconnecting the carriage from its controlling-detent, while the notches in the plate constitute stops to selectively control the stopping-place of the carriage as it moves in response to its actuating-spring.

To operate the keys in accordance with the present invention, a spring 'm is provided, which is adapted to be wound up ateach operation which winds the springs which operate the restoring device, as above described. 'Ihe preferred m ethod of simultaneously winding the spring for restoring the carriage and that for operating the key-levers and the means for causing the latter spring to operate will be hereinafter described, it being obvious, however, that both of the said springs may be wound by means of a tfreadle or similar device, the operation thereof being the same after the power is once stored up within them. The said spring m is connected t-o the periphery of a drum or shaft m2, which carries a number of longitudinal rods or bars m5 and which is provided with suitable escapement mechanism cooperating with the keylevers, whereby each time a key is slightly pressed downward the said drum m2 is caused to make part of a revolution and to operate the key-lever actuated by said key, as will be described.

Each of the key-levers n is provided with a hook n0, pivotally secured to the lower edge thereof and hung in such a position as to be normally just beyond or above the path of the rods m5 as they travel owing to the rotation of the drum m2. If, however, the key connected to any one of said key-levers is slightly depressed, the hook n0, connected to said keylever, will be brought down into the path of one of the said rods m3, so as to be caught thereby, as will be seen by reference to Fig. 6, so that in the rotation of the drum m2 the said key-lever will be suddenly and sharply drawn down, producing the operation of the type connected thereto, and as the hook n2 is carried downward the slopingsurface n3 thereof will engage the outer surface of a cam projection n4, which, as clearly indicated in Fig. 6, will carry the same out of engagement wit-h the rod m5, and thus allow the key-lever to become restored to its normal position in the usual way.

To permit the rotation of the drum fm2, the latter is provided with an escapement device consisting of a wheel m4, having teeth m5, said wheel being surrounded by a frame m5, having teeth m7 and m8 projecting inwardly from opposite sides thereof, so that a downward movement of said frame from the position shown in Fig, 6 will cause the tooth m4, which normally stands, as shown in Fig. 6, in engagement with a tooth of the wheel m9, to become disengaged therefrom, thus permitting the said wheel m4 to rotate until a tooth thereof is engaged by the projection 'm7, which is then in a position to engage such tooth, and the corresponding upward movement, which, as

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will be described, is automatic, permits the further rotation of the driver until the tooth 'm8 again stops such rotation by its engagement with a tooth of the wheel m4.

To produce the downward movement of the frame m6, the latter is secured to an arm m9, which is preferably, as shown in Fig. 6, connected to the under side of the cross-piece m10, extending across from one side of the type-writerframe to the other and supported on pivotal arms m12, pivoted at m13. The said cross-piece m10, as shown in Fig. 3, lies directly below the key-levers fn and is depressed when any one of said key-levers is depressed, and it is obvious that the said escapement-frame m6 will be lowered, so as to disengage the tooth m8 from the teeth of the wheel m4. It is essential, however, that the completion of that portion of a revolution required for the operation and subsequent disengagement of the key-lever should be attendant upon a single touch of the key and not necessarily upon the depression and subsequent release thereof. For this reason the arm m9, by which the downward movement of the escapement-frame m6 is produced, instead of being permanently connected to the said frame, is connected thereto by means of a pivoted latch m14, which is adapted to engage a hole or shoulder in the said frame m6 and is also provided with a tail or projection Z015, adapted to engage a cam-surface m16, Fig. 3, when the said frame is depressed by the key. This cam-surface m16 is so arranged that it will cause a movement of the hook or latch 'm14 upon its pivot, throwing it out of engagement with the frame m6 and allowing the latter to return, owing to the stress of the spring m upon a stem m61, mounted in a guide way or opening in a su pporting-ar m m62, secured to the frame, the spring being interposed between t-he surface of said arm and the flange m63 at the end of said stem. Thus a downward movement of any key rst depresses the arm m9, carrying with it the escapement-frame m6, permitting the wheel m4 and drum m2, upon which it is mounted, to turn a portion of a revolution, and then pra-cticallyinstantaneously the escapement-frame m6 is released and allowed to return to its normal position, thus permitting the wheel m4 to complete that portion of a revolution which is necessary for a complete operation of the type.

The springs for operating the key-levers and for restoring the carriage, the operation f of which has been thus far described, maybe wound up or set in any suitable way, means being provided, however, in accordance with the invention for doing this work by means of a constant force, as that of a weight or spring wound 0r set, 4for example, at the beginning of the day and adapted to be utilized for a days work, but preferably by the weight of the operator, the parts being automatically restored to normal position when the operator leaves the machine. The escapement mechanism, which will now be described in this connection, may obviously control any weight or spring wound up beforehand, but is herein shown as used in connection with a suspended platform C, adapted to support the type-writer,which is mounted upon asuitable cabinet or table, and also to support a chair forthe operator, the weight of the operator on the platform being adapted to operate to wind u p the carri age-restoring and typeoperating springs intermittingly, as has been described. The platform O is shown as provided with two shafts C2, each of which has a pinion C3, meshing with a rack G4, along the. side of a standard C5, and the said shafts C2 are each provided with a beveled gear C, meshing with a similar gear C7 upon a transverse shaft C8, which may be connected to a shaft R, as by asprocket R2 and chain R3, the tendency of which will therefore be to rotate in the direction of the arrow, Figs. l and 5, when such rotation is not prevented. A cou nterpoise-spring C9 is also preferably provided, as the entire weight is obviously not necessary for the proper operation -of the devices, and said counterpoise-spring maybe and preferably is sufficiently strong to overbalance the weight of the platform, cabinet, machine, and chain, so that each time the operator leaves the machine the platform is restored to its original position, the apparatus thus being self-restoring and always ready for operation. In connection with the shaft R, however, the escapement device is used and suitably controlled, so that when the arm g6 is pressed down and released the shaft R is permitted to make one revolution, and is so connected with the restoring device a h and typeoperating spring m as to wind up the springs of the restoring device and the said spring m, which is so arranged that a single winding is sufficient to rotate the drum 'm2 during the operation of printing a complete line. To this end, therefore, the shaft R is geared, by means of a pinion R4, to a pinion R5 on a counter-shaft r, which is provided with projections r2 r3 on opposite sides thereof, and a frame s is provided, preferably substantially circular or loop shaped, having along its inner periphery the projections s2 and s3, the said frame being mounted on stems s4 and s6, longitudinally movable in the guideways S5 and sT and connected to the rod g2, as by an extension of the arm g, so as to be moved up and down by'a corresponding movement of the keys, which cooperate with said rod. Referring, therefore, to Fig. 5, it will be seen that when the rod g2 is depressed to restore the carriage the frames will be moved downward, so that the projection s3 will become disengaged from the arm or projection r3, allowing the shaft fr to make substantially a half-revolution until the projection r3 is engaged by the projection s2. Again, on restoring the rod g2 to its normal position the spring g4 lifts the frame s and the projection 'r3 will be disengaged from the projection s2,

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permitting the other half-revolution of the shaft r until it is again brought to a standstill by the engagement of the projection r3 with the projection s3. Thus at each m anipulation of the keys above described as coperatingr with the rod g2 a complete revolution of" the shaft r is permitted.

During the rotation of the shaft r it is obvious that the shaft R will rotate two or three times, owing to the difference in the diameter of the gears connecting the two, and the spring m, one end of which is connected to the periphery of the drum m2, through which the said shaft R extends and upon which it is journaled, will be Wound by means of a radial arm R0,projecting outward from the said shaft R and connected to the free end of the spring.

Since the drum m2 is preven ted from rotation by the escapement device hereinbefore described, it is obvious that the independent rotation of the shaft R will wind up the spring m, the arm R being provided with a slotted U-shaped socket R7, into the slot of which is connected the end of the spring, so that as the latter winds up the end of said spring can travel inward with relation to said arm. At the same time the rotation of the shaft R is arranged to produce a movement of the cor'd or strap c, which has been hereinbefore described connected with the restoring device ct b and to the periphery of the drum c2. To wind said drum, a cord c3, connected therewith, is also connected with a winding-drum which is adapted to be rotated by the shaft R. It is obvious that the cord c might eX- tend over the drum c2 or a suitable pulley and be directly connected with the drum c4; but as it is desirable to multiply the effect of the rotation of the shaft R the drum c2 is preferably connected with a supplemental drum 020 of smaller diameter, and the cord c3 is connected to the periphery thereof,while the cord c is connected to the periphery of the larger drum c2, so that a relatively small downward movement of the cord c3 results in a complete movement of the restoring device a b.

'lo permit the unwinding of the drum c4 preparatory to a subsequent winding operation, it is loosely mounted on the said shaft R and adapted to be connected therewith during the rotation thereof and disconnected at the end of such rotation. For this purpose the pinion R1 is provided with a latch R40, pivoted thereto and projectingr through an opening therein, the said latch R40 having a tail or projection R40, adapted to be engaged by a projection 000 from the surface of the escapement-arm r3. Cooperating with the said latch R40 there is a series of shoulders R23, formed by cutting recesses along the periphery of the drum c4, against which the said latch is adapted to project when in its normal position. Thus during the rotation of the said shaft the said latch, becoming engaged with one of the shoulders R23, will cause a rotation of the drum c* and wind up the cords c3 and c until the restoring device storing device is free to act.

ct b is carried to its extreme left-hand position, at the end of which time the projection from the arm rof the escapement device will throw the latch R40 out of engagement with the drum c4, permitting the latter to rotate freely and allowing the restoring device to travel from left to right and carry with it the carriage. With this arrangement it is obvious that a restoring device having only a single member may be employed and the cam g may be dispensed with, since the downward movement of the rod Q0 in response to the operaators touch and the return movement thereof, due to the restoring-spring g4, results, as described, in a complete rotation of the shaft r. Such rotation being transmitted to the shaft R first turns the drum c4, act-ing through the cord c3, drum c2 and 020, and cord c to draw the restoring device to the left, where it engages the dog d, and then at the end of such rotation the arm v3, With its projection T00, in conjunction with the latch R40, frees the drum c4, so that the spring connected with the re- Thus at the completion of a line a touch upon the restoring-key produces a complete operation of the restoring device.

It is to be understood that the specific construction and arrangement of instrumentalities hereinbefore described as embodying the invention may be largely modified without departing from the invention, which therefore it is not intended to limit to such specific construction.

I claiml. An attachment for type-Writers comprising a traveler adapted to engage and restore the carriage to its initial position, a springactuating device for said traveler adapt-ed to be Wound by moving said traveler in one direction, and by unwinding to move said traveler in the opposite direction, means for moving said traveler in the direction required to wind the spring thereof, and a device for releasing the traveler to cause the operation thereof to return the carriage, substantially as described.

2. An attachment for type-writers com prising a traveler adapted to engage and restore the carriage to its initial position, a springactuating device for said traveler adapted to be wound by moving said traveler in one direction and by unwinding to move said traveler in the opposite direction, means for moving said traveler in the direction to wind the spring thereof, a latch or hook adapted to connect said traveler with said moving and winding means, and a cam cooperating with said latch to trip the same, substantially as described.

3. An attachment for type-writers comprising a traveler adapted to engage and restore the carriage to its initial position, a springactuating device for said traveler adapted to be wound by moving said traveler in one direction and by unwinding to move said traveler in the opposite direction, means for mov- IOO ing said traveler in the direction to wind the spring thereof, a latch or hook adapted to connect said traveler with said moving and winding means, a movable cam adapted to cooperate with said latch and trip the same, and means for locking said cam in position to trip the latch, substantially as described.

4. The combination with a type-writer carriage, of a track secured to the frame, a traveler mounted on said track, and adapted to engage and restore the carriage, a spring adapted to be wound by the movement of said travelerin one direction and by unwinding to produce a movement thereof in the opposite direction, means for moving said traveler in a direction to wind the spring and maintaining it in the position to which it is thus moved, and a device for releasing said traveler to permit its return movement in response to its spring, substantially as described.

5. In a restoring device for a type-writer carriage, the combination with a track or guideway, of a two-part traveler mounted on said track, a spring connected with each part, an externally-operated cord attached to one part to produce a movement thereofagainst the stress of said springs, means for attaching said parts, whereby a movement of said cord produces a simultaneous movement of both said parts, a device for detaching said parts, and a projection from the type-writer carriage adapted to be engaged by the detached part during a movement thereof in one direction but not in the other, substantially as described.

6. In a restoring device for a type-writer carriage, the combination with a member provided with a spring and adapted to be pulled against the stress of said springin the direction of forward travel of the type-writer carriage, of a second member provided with an independent spring, a hook or latch on one of said members adapted to engage a projection on the other, means whereby said second member will engage the type-writer carriage d uring a movement thereof in one direction but not in the other, and a cam under the control of the operator adapted to engage and trip the said hook or latch, substantially as described.

'7. In a restoring device for a type-writer carriage, the combination with a member provided with a springand adapted to be pulled against the stress of said spring in thel direction of forward travel of the type-writer carriage, of a second member provided with an independent spring, a hook or latch on one of said members adapted to engage a projection on the other, means whereby said second member will engage the type-writer carriage during a movement thereof in one direction but not in the other, a cam adapted to be moved' by the operator into position to engage and trip the said latch, and means for locking said cam in such position, substantially as described.

8. The combination with the type-writer carriage, of a restoring device adapted to engage and restore said carriage to its initial position, a spring connected with said restoring device and adapted to be wound by a movement of said restoring device in one direction and by nnwinding to produce a movement thereof in the opposite direction, and means for automatically detaching said carriage from said restoring device when the former has been restored to its initial position, substantially as described.

9. The combination with the type-writer carriage, of a restoring device comprising a traveler adapted to be moved in one direction under the control of the operator,a spring connected with said traveler and adapted to be wound or strained by such movement of the traveler and to prod uceamovement thereof in the opposite direction to restore the carriage, a dog connected with the carriage, a

cam-surface and shoulder on said traveler whereby said dog is adapted to be engaged by said traveler during the movement of said traveler in one direction but not in the other, and a cam adapted to engage said dog and throw it outof engagement with the shoulder of the traveler when the carriage is completely restored, substantially as described.

10. The combination with the type-writer carriage, of a restoring device comprising a traveler adapted to be moved in one direction under the control of the operator, a spring connected with said traveler and adapted to be wound or strained. by such movement of the traveler and to produce a movement thereof in the opposite direction to restore the carriage, a dog connected with the carriage, a cam-surface and shoulder on said traveler whereby said dog is adapted to be engaged by said traveler during the movement of said traveler in one direction but not in the other, a cam adapted to engage said dog and throw it out of engagement with the traveler, and a device for shifting the paper-roll in response to the movement of the carriage, substantially as described.

1l. The combination with the type-writer carriage, of a restoring device comprising a traveler adapted to be moved in one direction by a device under the control of the operator, a spring connected with said traveler and adapted to be wound or strained by such movement of the traveler and to produce a movement thereof in the opposite direction to restore the carriage, a dog connected with the carriage, a cam-surface and shoulder on said traveler whereby said dog is adapted to be engaged by said traveler during the movement of said traveler in one direction but not in the other, acam adapted to engage said dog and throw it out of engagement with the traveler, a device for shifting the paperroll in response to the movement of the carriage, and means for shifting the position of said cam, substantially as described.

l2. The combination with the type-writer IOO IIO

IIS

carriage, of a restoring device comprising a traveler adapted to be moved in one direction under the control of the operator and in the opposite direction by a spring, a dog connected with the carriage, a cam-surface and shoulder' on said traveler whereby said dog is adapted to be engaged by said traveler during the movement of said traveler in one direction but not in the other, a cam adapted to engage said dog and throw it out of engagement with the shoulder of the traveler, and a device for shifting the paper-roll and means for shifting the position of said cam and simultaneously releasing said traveler to restore the carriage, su bstantially as described.

13. The combination with a spring-actuated restoring device for a type-writer carriage, of means for determining the position to which said carriage is to be restored, consisting of a movable frame provided with a device for disconnecting the carriage and carriage-restoring device, and means for moving said frame, substantially as described.

14;. The combination with a spring-actuated restoring device for a type-Writer carriage, of means for determining the position to which said carriage is to be restored, consisting of a movable frame provided with a device for disconnecting the carriage and carriage-restoring device, an elbow-lever connected to said frame, and an arm adapted to be moved by the operator to engage said elbow-lever and produce a corresponding movement of said frame, substantially as described.

15. The combination with a spring-actuated restoring device for a type-writer carriage, of means for determining the position to which said carriage is to be restored, consisting of a movable frame provided with a device for disconnecting the carriage and carriage-restoring device, an arm provided with a key and adapted by its downward movement to move, said frame a predetermined distance, and a supplemental key connected with said arm and provided with a stop to limit the movement thereof, substantially as described. A

16. The combination with the carriage-restoring device, of a movable frame coperatiug therewith to control the extent of movement thereof, an arm hg provided with a key hw and connected with said frame to produce a movement thereof, and a supplemental key it provided with a stem h14 extending thro ugh said arm and adapted to engage a portion of the type-writer frame, substantially as and for the purpose described.

17. The combination with the carriage-restoring device, of a movable frame coperating therewith to control the extent of movement thereof,the carriage-feeding device comprising a detent adapted to cooperate with the carriage to arrest the forward movement thereof, said detent being arranged to permit the rearward movement of said carriage,

means for moving said detent to permit a step-by-step forward movement of said carriage, and a device for preventing the arrest of said carriage by said detent at certain points in the travel thereof except when said detent is moved to permit the usual step-bystep feed of the carriage, substantially as described.

18. In a type-writer, the combination with the carriage, of the rack k connected therewith, the supplemental rack 165 connected with the rack 7c but capable of independent movement in a direction parallel thereto, the detent 7a2 movable transversely with relation to said racks and adapted to alternately engage thesame, and the plate 7950 secured to the rack c5, the lower surface of said plate extending substantially to the lower edge of said rack 705, and one or more notches in the lower surface of said plate, substantially as and for the purpose described.

19. The combination with the type-writer l carriage, of a restoring device therefor, a spring connected with said device and adapted to be wound or strained by a movement thereof to its operative position, and a' device for automatically releasing the said restoring device after it has been thus moved, to permit the operation thereof substantially as described.

20. The combination with the type-writer carriage, of a restoring device therefor, a spring connected therewith and adapted to be wound or strained by a movement thereof to its operative position, a force as that of a Weight or spring constantly exerted and adapted to produce such movement of said restoring device, an escapement device controlling said force, and means for controlling said escapement device, substantially as described.

21. The combination with a restoring device for a type-writer carriage, of a drum adapted by its rotation to move said restoring device to its operative position, a spring connected with said restoring device and adapted to be wound by such movement thereof, a shaft adapted to rotate said drum, means for connecting said shaft and said drum during the rotation of said shaft, and a device for disconnecting said shaft and drum to permit the independent rotation of said drum, substantially as described.

22. The combination with a restoring device for a type-writer carriage, of a springactuated shaft adapted to operate said restoring device, a drum mounted on said shaft and normally free to rotate thereon, a latch connected with said shaft and adapted to be connected with said drum to produce a rotation thereof with said shaft, a force as that of a weight or spring constantly tending to rotate said shaft, an escapement controlling said force, and a tripping device for said latch, operating in response to the rotation of the said shaft, substantially as described.

23. The combination with a drum c4 adapted IOO IIO

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by its rotation to operate the carriage-restoring device, of a shaft R provided with aspx-ing or motor, a counter-shaft 1' geared thereto, an escapement device comprising the arms r2 and r3 upon said counter-shaft, and the frame s coperating therewith, a latch R40 pivoted to the shaft R, shoulders R23 upon the drum c4 normally engaged by said latch, and the projection T30 from the escapement-arm 'r3 adapted to trip the said latch, substantially as described.

24. The combination with a restoring device for a type-writer carriage, of an actuating-shaft adapted by its rotation to move said restoring device to its operative position, aspring connected with said restoring device, and adapted to be wound by such movement, means for automatically releasing the restoring device thus moved to permit the operation thereof, a motor for said actuatingshaft, and an escapement controlling the operation of said motor, substantially as described.

25. The combination with the type-Writer carriage, of a spring-actuated restoring device therefor, a support or platform for the type writer operator connected with the spring of said restoring device to wind the same, an escapement to control the operation thereof, and means for controlling said escapement, substantially as described.

26. The combination with the restoring device provided With a spring, of a shaft R adapted by its rotation to first move said restoring device, thereby winding the spring thereof, and afterward to automatically release said restoring device to restore the carriage, an escapement for said shaft R under the control of the operator, the platform C, the rack C4 and the shaft C2 provided with a pinion meshing with said rack and geared to the said shaft R, substantially as described.

27. The combination with the shaft R adapted by its rotation to operate a restoring device for a type-writer carriage, Aof a manually-operated escapement for said shaft, a platform adapted to hold the machine and support the Weight of the operator, said platform being connected to said shaft R, so that a downward movement of said platform tends to produce a rotation of said shaft, and a counterpoise spring or weight for said platform adapted to overbalance the weight thereof together with that of the machine, substantially as described.

28. In a type-writer, the combination with the key-levers, of a hook connected with each key-lever, a spring-actuator adjacent to said hooks and adapted to engage the hook of any lever that is depressed, an escapement device for controlling the operation of said actuator, and means whereby the depression of any key-lever causes the operation of the said escapement device, substantially as described.

29. The combination with the key-levers,

of a hook depending from each lever, an actuating device coinmon to all of said levers and adapted to'engage the hook of any lever which is depressed, means for disengaging the hook therefrom during the movement of the Said actuating device, a motor for said actuating device, and an escapement foi` said motor controlled by the movement of any of said key-levers, substantially as described.

,30. In a type-Writer, the combination with the type-bars, of a shaft adapted by its rotation to actuate said type-bars, a motor adapted to drive said shaft, an escapement device for said motor comprising a toothed wheel on said shaft anda spring-supported frame having a projection adapted when said frame is in its normal position to engage a tooth of said wheel, means for moving said frame to carry said tooth out of engagement with the teeth of said Wheel, a second tooth on said frame also adapted to engage a tooth of said wheel, and means for automatically releasing said frame thus moved to restore the same to its initial position, substantially as described.

31. In a type-writer, the combination with a motor-driven shaft, of a spring adapted to cause-successive printing operations, a carriage-restoring device, a spring for operating the same, means whereby the rotation of said motor-driven shaft is caused to wind both of said springs, an escapement device for said shaft, and common means for causing the operation of said carriage-restoring device and of the escapement mechanism for said shaft, substantially as described.

32. In a type-writer, the combination with a restoring device for the carriage, of a spring for operating the same, a spring adapted to operate the type-bars, common means for winding said springs, and devices for controlling the operation thereof when wound, substantially as described.

33. In an attachment for type-writers, the combination with the frame provided With a track, of a spring-actuated traveler movable along said track and adapted to engage and restore the carriage, a vertically-adjustable cam secured to said frame and adapted to be engaged by the shifting-lever for the platenroll, and a holding device also secured to said frame and adapted to engage the upper portion of said carriage to prevent the same from being lifted by said cam, substantially as described.

34. The combination with the type-writer carriage, of a feeding device therefor comprising a detent adapted to cooperate with the carriage to arrest the forward movement thereof, said detent being arranged to permit the rearward movement of said carriage, means for moving said detent to permit the step-by-step forward movement of said carriage, and a device for preventing the arrest of said carriage by said detent at certain points of the travel thereof except when said IIO IZO

movement of said carriage, and a device for preventing the arrest of said carriage by said detent at certain points of the travel thereof except when said detent is moved to permit the usual step-by-step feed of the carriage, substantially as described.

In testimony whereof I have signed my name t-o this specification in the presence of two subscribing,r witnesses.

PAUL E. COLLINS.

Witnesses:

H. J. LIvERMoRE, N. P. FORD.`