US593094A - Type-writing telegraph - Google Patents

Description

(No Model.) 5 Sheets-Sheet 1 L. R. HAMMOND. TYPE WRITING TELEGRAPH.

No. 593,094. Patented Nov. 2, 1897.

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WITNESSES: lgi/igTO/i BY ATTORNEY.

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(No Model.) 5 Sheets-Sheet 2 L. R. HAMMOND. TYPE WRITING TELEGRAPH.

No 593,094." Patented Nov. 2, 1897.

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(No Model.) 5 Sheets-Sheet 3 L. R. HAMMOND. TYPE WRITING TELEGRAPH.

N0. 593,094. Patented Nov. 2,1897.

WITNESSES:

ATTORNEY.

5 Sheets-8heet 4 (No Model.)

L R HAMMOND TYPE WRITING TELEGRAPH.

Patented Nov. 2, 1897.

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Patented Nov. 2, 1897.

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UNITED STATES Parent @rricn.

LEO R. HAMMOND, OF NEYV HAVEN, CONNECTICUT.

TYPE-WRlTlNG TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 593,094, dated November 2, 1897. Application filed May 18, 1396i Renewed September 15, 1897. Serial N G51,776. (No model.)

To 66% whom it may concern:

Be itknown that I, LEO R. HAMMorna citizen of the United States, residing at New Haven, county of New Haven, and State of Connecticut, have invented a new and useful Improvement in Type-ivriting Telegraphs,

of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.

The object of my invention is to provide means whereby matter written or printed upon a type-writin g machine can be electrically transmitted for any desired distance to a second type-writing machine and automatically reproduced upon the latter simultaneously, or practically so, with its production upon the first or sending machine.

A further object is the transmission of matter so produced upon the sending-machine to any desired number of receiving-machines which may be located in the same electric circuit, each of the latter machines making a facsimile copy of the matter printed upon the sending-machine.

A further object is to provide a system of the kind indicated in which the sendingmachine and the receiving machine or machines are electrically connected bya normally open circuit and in which the selection of the respective letters or characters on the receiving machine or machines is secured automatically by varying the number of contacts made by circuit-closing devices on the sending-machine.

A further object is to secure in a system of this nature a maximum degree of speed and accuracy in the transmission of the matter written upon the sending-machine with the greatest possible simplicity and cheapness of construction of the mechanism employed.

To these ends my invention consists in the type-writing telegraph constructed and operating as hereinafter fully described, and particularly. pointed out in these claims.

Referring to the drawings, in which like numerals designate like parts in the several views, Figure l is a plan view of an apparatus embodying the invention with the paper-feeding carriage removed. Fig. 2 is an edge view of the selector-bar which governs the position of the tappet on the revoluble Fig. 3

selector-disk. is a side elevation of the apparatus. the selector-disk, taken at line :23 so of Fig. 1. Fig. 5 is a detail view of one of the circuitclosers. Fig. 6 is a detail view of the escapement mechanism and its operating-magnet. Fig. 7 is a detail view of the lever which raises and lowers the type-wheel. Fig. Sis a view of one end of said lever. side view of the rack-bar. Fig. 10 is an end View thereof. Fig. 11 is a view in perspective of the type wheel or segment. Fig. 12 is a detail view showing the paper-carriage and the means for moving the same in reversc directions. Fig. 13 is a cross-section at line y 3 of Fig. 12, drawn to a larger scale. .Fig. 14 is a cross-section at line .25 of Fig. 13. Fig. 15 is a detail view of the carriage-operating lever. Fig. 16 is a side view of the double pawl which controls the feeding movement of the carriage. Fig. 17 is an edge view of said double pawl.

The numeral 1 designates the bed of the machine, and 2 designates a way erected upon said bed, (see Figs. 3 and 12,) said Way containing a dovetail groove which receives a rib 3, projecting from the front side of a papercarriage 4, whereby said carriage is adapted to have a sliding movement on said way. Said carriage is provided with hearings to receive a roll of paper 5 and at its upper end with the paper feeding and holding rolls 6 and 7, adapted to engage opposite sides of the paper led from said roll 5. At its rear side the carriage 4: is provided with the rack 8, which rack is engaged by a gear 9, carried by a short shaft 10, said gear carrying a barrel 12, containing a coil-spring, (not shown) which spring connects the gear and barrel to said shaft in such manner as to exert tension upon the former in one direction to drive the carriage a in such direction, as is common in type-writing machinery, the amount of tension being regulated by turning the shaft 10, which is provided with a squared end for the purpose, as shown. -The feeding movement of the carriage 4;, induced by 'said springactuated gear, is governed by a double pawl presently to be described, and to return the carriage to its starting-point after each forward movement thereof I employ the following mechanism:

Fig. at is a cross-section of Fig. 9 is a A vertically-disposed driving-shaft 13, suitably journaled at its upper end on the bed 1, carries at its lower end the fast and loose pulleys 14 15, by which motion is transmitted thereto by belt from a small motor or other convenient source of power, and also carries below the bed the worm 16. A lever pivoted upon a bracket 17, depending from the bed, has its long arm 18 bent, as shown in Fig. 15, and is provided at its upper end with a fork which embraces a pin 19 on the carriage 4, while its short arm 20 is similarly forked to embrace a pin 21 on a block 22, vertically movable on ways 23, depending from the bed adjacent to and parallel with the shaft 13. Said block 22 is provided with a housing 24, (see Figs. 13 and 14,) in which is mounted a longitudinally-movable hub 25, carrying at its outer end a pin 26, adapted to enter the groove of the worm 16, a spring 27, bearing against the inner end of said hub, serving to exert outward pressure thereon to force the pin 26 into engagement with the worm. Said hub is provided near its inner end with an annular groove 28, and a detent 29, pivotally hung upon the block 22, has its front end bent at a right angle and entered through an opening in the housing 24, where it is adapted to enter said groove 28 to hold the hub 25 in a retracted position in which its pin clears the worm. At the lower end of one of 'the ways 23 are located a stop-screw 30 and lock-nut, as shown in Fig. 12, the upper end of which screw engages the rear end of the detent 29 when the block 22 reaches the end of its downward movement and rocks said detent sufficiently to withdraw itsfront end from the groove in the hub 25 and thereby permit the spring 27 to throw the pin 26 into operative engagement with the worm. hen the block reaches the end of its upward movement, the pin 26 rides out of the groove of the worm at the upper end of the latter, and is thereby forced back until the detent again engages the groove in the hub and holds the latter in its retracted position until by the forward feeding movement of the paper-earriage the block again reaches its lowest position. Provision is thus made for automatically and quickly returning the carriage to its starting-point after each of its feeding traverses.

To automatically feed the paper upwardly at the end of each line of printing, the feedroll 7 carries at one end a ratchet-wheel 31, (see Figs. and 12,) and upon its shaft adjacent to said wheel is hung a lever 32, carrying a pawl 33, which engages the teeth of said wheel. A rod 34, pivotally connected at its upper end to said lever 32, extends downwardly through a housing on the carriage to a point below the latter, where its lower end is in position to be engaged by a camblock 36 on the frame of the machine, which cam-block as the carriage approaches the end of its backward movement forces said rod upwardly and, through the pawl 33, imparts sufficient movement to the roll 7 to feed the paper upwardly a distance corresponding to the space between the lines printed thereon. A spring 37, surrounding the rod 34, returns it to its lowest position as soon as it is caused to leave said cam-block by the forward movement of the carriage.

Ereeted upon the bed in front of the paperearriage is a vertical standard 38, (see Figs. 1 and 3,) the upper end of which forms abearing for the upper end of a vertical shaft 39, which carries at its upper end the type wheel or segment 40, (shown in detail in Fig. 11 the outer face of which bears the raised letters and characters in a manner similar to the type-wheel of the Well-known Hammond typewriter. A partial revolution is imparted to the type-wheel by means presently to be described to bring any desired letter into register with the end of an impression-hammer 41 immediately above the feed-rolls of the paper'carriage and upon opposite sides of the paper, as shown. The hammer 41 is bent, as shown in Fig. 3, and is pivoted at 42 to the frame of the machine, it being provided upon the opposite side of its pivot with the short upwardly-extending arm 43, at the upper end of which arm is carried the double pawl composed of the two members 44 45. (Shown in detail in Figs. 16 and 17.) Each of the pawl members 44 45 is mounted upon apivot upon said arm at a right angle to the pivot 42 of the hammer in such manner as to be capable of a limited rocking movement, and they are made V-shaped at their upper ends to cause them to closely engage the teeth of a ratchetbar 45 on the carriage. Springs 46 47, surrounding the ends of the pivot of said pawl members, engage pins on the latter in such manner as to force said members in opposite directions, the action of said springs being to normally retain the members in a positionin which their V-shaped upper ends coincide with each other, stop-lugs 48 49 on the arm serving to limit their movement at such point. As the hammer 41 is rocked upon its pivot by means presently to be described to carry its upper end against the paper and make the impression the arm 43 is caused to move the double pawl transversely across the ratchetbar 45 in such manner as to permit the ratchet-bar to move a distance of one tooth in its forward movement with each of said rocking movements of said arm-that is to say, in the forward movement of the hammer the two members of the pawl coincide with each other, as shown in Fig. 12, and engage the same tooth of the ratchet-bar until the member 44 clears said tooth, whereupon the spring tension on the carriage causes the ratchet-bar to move one tooth, swingin g member 45 to its opposite position, as shown in Fig. 16, where it holds the ratchet-bar from further movement, while in the rearward movement of the hammer the member 44 engages the next tooth of the ratchet-bar, still holding the latter against movement, the

member 45 as soon as it clears the ratchetbar atits rear side being returned by its spring to its normal posit-ion of coincidence with member 44:, when the parts are ready for another forward in ovement'of the hammer. In this manner the carriage is permitted to be fed forward a distance of one tooth of its ratchet-bar at each forward movement of the hammer and just before the hammer engages the paper to make the impression. The pawl member 44; is made capable of yielding in one direction, as described, to permit it to ride over the teeth of the ratchet-bar in the return movement of the carriage caused by the worm 16, as previously described.

The type-wheel 40 will usually be provided on its face with a plurality of rows of letters or characters, there being in the example herein shown three of such rows extending horizontally across the face thereof, as indicated in Fig. 11. Such arrangement of said characters necessitates the elevation of said type-wheel whenever a character in the second or third row is required to bring said character into the plane of the impression-hammer, and for this purpose the lower end of shaft 39 is mounted upon a step 50, (see Fig. 1,) pivotally supported upon the end of a lever 51, which lever is pivoted upon standards 52 on the bed 1. '1 we screws 53, projecting from the step into an annular groove in said shaft, permit free axial movement of the latter while causing it to partake of the vertical movement of the step.

The means for securing the automatic action of the hammer 41 to make the impression and for automatically operating the typewheel to bring any letter thereon into register with said hammer will now be described.

The driving-shaft 13 carries above the bed 1 a fixed clutch-collar 54, (see Figs. 1, 3, and 4,) which collar is provided with three equidistant teeth, as shown. Loosely mounted upon said shaft above said clutch-collar is the selector-disk 55, which is provided with three equidistant cam projections 56 upon its periphery. Upon its under side said disk carries three sliding bolts 57, Figs. 1 and 4, adapted to engage one of the teeth of the clutch-collar 5:4; to cause said collar and the disk to revolve in unison, springs 58 constantly pressing said bolts toward said collar. Said bolts are normally held out of engagement with said clutch-collar by detents 59, pivoted to the under side of the disk and having an upturned end which enters a recess in the bolt for such purpose, flat springs 60 normally holding said acting ends of the detents in such locked engagement with said bolt. The under side of' one of said detents is engaged at its outer end during each period of rest of the disk by the rear end of a trip-lever 61, pivoted upon the bed 1, the front end of which lever is bent upwardly, as shown in Fig. 3, to a point where it is adapted to be engaged by a cam projection 62 (see Figs. 9 and 10) on the under side of a rack-bar 63,

movable within dovetail ways in standards or erected on the bed, said cam projection being located at such point on the rack-bar that movement of the latter from its normal posi tion a distance of a single tooth thereof will cause said projection to depress the front end of said lever 61 and thereby operate the acting detent 59 to release its bolt 57 and thus lock the clutch-collar and disk in operative engagement with each other. The clutchcollar and disk are thus caused to revolve to gether; but in order to limit each movement of the disk to one-third of a revolution a stationary cam 75 (see Figs. 1 and 3) is located on the bed at the proper point, which cam engages a depending pin 76 on the bolt 57 and withdraws it from its engagement with the clutch-collar and to its retracted position, where it is held by its detent 59. To further insure the stopping of the disk at such point, three pins 77 are mounted in sockets 78 on the bed and pressed upwardly by springs 79, the rounded upper ends of which pins enter recesses 80 in the under side of the cam projections 56 of the disk in its positions of rest, said pins yielding to escape from said recesses when the disk begins its next movement. The rack-bar 63 has teeth both upon its upper edge and upon its rear side, and the latter teeth engage a gear 65 on the shaft 39 of the type-wheel, by which connection a partial revolution is imparted to the latter at each longitudinal movement of said bar, the acting face of said gear being of sufficient width to permit the beforementioned vertical move ment of the shaft 39 and type-wheel without breaking its engagement with said rack-bar.

The selector-disk 55 carries three tappets 66 67 68, which are movably located within radial slots 69 in the disk, as shown in Figs. 1 and 4. As herein shown, each of said tappets comprises a pin having an enlarged portion 70, which bears against the under side of the disk at the edges of the slot 69 and projecting upwardly through a slide-block '71, which has a sliding fit within the slot and is provided with flanges at its upper end, which project laterally into a recess 72 in the upper surface of the disk and surrounding said slot, said pin carrying above said slide-block a loose antifriction-roll 73 and a thumb-nut 74, by which the several parts of the tappet are maintained in their operative relation to each other. One of the functions performed by said tappets is to operate the hammer 4.1, and for this purpose said hammer is provided with a projecting lug 81, (see Fig. 3,) the under side of which is engaged by a lever 82, pivoted between its ends upon the frame. A rod 83 connects the opposite end of said lever to one end of a lever 84, which latter lever is pivotally hung at its opposite end to cars on the bed and carries between its ends a shoe 85, so located as to be engaged by the tappets in one of their positions radially of the disk- Such engagement of said shoe by a tappet de. presses lever 84 and by rocking lever 82 actu- IIC ates the hammer and causes it to strike a forcible blow against the paper interposed between it and the type-wheel. After the tappet has passed the shoe 85 a spring 80 re stores levers 84 and S2 to their normal position and permits the hammer to return by its own weight to its normal or retracted position. Another function performed by said tappets is to rock the lever 51 to elevatethe shaft and the type-wheel whenever a character in either the second or third row of those on the face of the latter is desired, and for this purpose the rear end of said lever carries beneath disk 55 a shoe 87, formed on a curve concentric to the axis of said disk and havingits uppersurface formed into two steps 88 S9 of different heights and at unequal dis tances from the center of said disk. The weight of shaft 30 and the type-wheel normally retains the rear end of said lever 51 in its highest position, and whenever a tappet is moved to the proper position radially of the 7 disk to bring it into the plane of the innermost step S8 of the shoe 87 said tappet will depress said shoe suiiiciently to raise the sec- 0nd row of characters on the type-wheel to the level of the hammer, and if moved into the plane of the outer step 89 will raise the third row of characters to said level, and so on, it being understood that the shoe 87.

will have as many steps as there are rows of characters on the type-wheel in excess of the first row. i

It will be apparent from the foregoing description that the work done by the tappets on the selector-disk depends entirely upon their position radially'of said disk, and the device, which automatically causes them to assume any desired position, consists of a selector-lever 90, (see Fig. 1,) pivoted at its rear end to a standard 01 on the bed and provided between its ends with a projection 92, which extends to a point above the adjacent edge of the disk 55, the outer edge of said projection being formed on a curve which is slightly eccentric to the axis of said disk, whereby said edge is adapted to engage the rolls 73 of the tappets and to act as a cam to move the latter toward the center of the disk a greater or less distance as said lever is swung more or less about its pivotal cent-er. At its front end said lever 90 is bent at a right angle and is provided with a slot to receive a pin 93 on the rack-bar The said slot is of L shape, its long portion 9st being at an angle to the main body of said lever and its short portion 95 being parallel therewith. The length of the short portion 05 of said slot is so proportioned relatively to the teeth on said rackbar that when the latter has moved forwardly or to the left in Fig. l a distance corresponding to its first three teeth the pin 93 thereon will pass from said short portion of said slot into the long portion 9st thereof, and will then cease to impart lateral movement to said lever 90. It follows, therefore, that however much movement the rack bar may have it can move the selector-lever only a distance corresponding to the first three teeth of said bar, and that the position of any given tappet radially of the selector disk, immediately after it has passed the projection 92 on said selector-lever in the forward movement of the disk, depends upon the amount of move ment actually imparted to said lever by said rack-bar.

Each tappet, after having been moved to any given position by the seleclor-lever, is returned to its normal or outermost position just before it again reaches the point of engagement with said lever by a stationary cam 06, depending from a bracket 97, secured to the bed and overhanging the selector-disk, as shown in Fig. 1.

The teeth on the upper edge of rack-bar 63 are engaged by the teeth of a gear 98, mounted upon a short shaft 00, which is supported in a bearing on the bed, said shaft also carrying at its opposite end a peripherallygrooved wheel 101 and a gear 102. A weight 103, secured to a cord 10% passed about said wheel 101, exerts a constant tension upon said shaft 99 in a direction to cause it to move the rack-bar in a forward direction, or toward the left in Fig. 1. The gear 102 meshes with a gear 105, loosely mounted upon a shaft 106, supported in astandard 107 on the bed, said gear carrying a pawl 108, (see Figs. 1 and 0,) which is pressed by a spring 109 i into engagement with apinion 110,1ixed on said shaft, whereby said shaft 100 and the gear 105 are caused to revolve in unison in one direction, while the gear can revolve independently of said shaft in the opposite direction. gear 112 of the same diameter as gear 105, the teeth of which are engaged by the pallets of an escapement-lever 113, pivotally hung upon the standard 107, the opposite end of which lever carries the armature 114 of an electromagnet 115. It results from such construction and arrangement of parts that at each depression of said armature 114 by the closing of the circuit through said magnet the weight 103 will be permitted to revolve shafts 09 and 100 a distance of one tooth of the wheel 112, thereby causing a forward movement of rack-bar 63 for a distance of one of its teeth. The lever 113 is returned to its normal or highest position as soon as the circuit through the magnet is broken by a spring 1 10, bearing at its upper end against the under side of said lever and resting at its lower end upon an adjusting-screw 117 (see Fig. 0) for regulating the tension thereof, said screw entering the lower arm of a V-shaped bracket 118, mounted upon the bed,'and the range of movement of said lever is regulated by an adjusting screw 110, passing downwardly through the upper arm of said bracket and a lock-nut 120.

The rack-bar 63 is returned to its normal position or starting-point with each partial revolution of the selector-disk by the engage- Said shaft 105 also carries a fixed ment of one of the three cam projections 56 on said disk with an arm 121 on the type-wheel shaft 39, (see Fig. 1,) such movement also winding up the cord 104; of weight 103 and rendering the latter readyfor another descent. It now remains for me to describe the means by which any character on the type-wheel can be automatically brought into register with the impression-hammer by opening and clos in g the circuit through said electromagnet.

To the bed 1 at its front end are secured two end standards 122 122, (see Figs. 1 and 3,) in which are secured the ends of three fixed shafts 123, 124, and 125. Upon said shaft 123 are loosely mounted a series of toothed wheels 126, each of which is provided upon one side with a laterally-projecting hub 127, containing four equidistant notches or recesses 128 in its peripery and with four equidistant pins projecting from its opposite side near the centerthereof. Upontheshaft124areloosely mounted a series of keys 130, which project forwardly over the shaft 123, there being a key for each of the wheels 12b, and carry at their front ends the usual buttons or finger-pieces 131, upon which is located the letter or character which the key represents. For convenience the front ends of said series of keys are arranged in parallelrows standing in diiferent horizontal and vertical planes, as shown, this being the common arrangement of the keys of type-writing machines, and while I have shown but two of such rows it will be understood that there may be as many as the capacity of the machine requires. Each of said keys 130 is provided in front of its pivotal center with two pivoted depending arms 132 and 133 and upon the opposite side of its pivot with a rigid depending arm 13%. The arm 132 is notched at its lower end to cause it to operatively engage the pins 129 on the toothed wheel 126 adjacent thereto, and a contraction-sprin g 13-5 connects said arm with the arm 133, as shown. Upon shaft 125 are loosely mounted a series of stop-pawls 136, each of which is provided at its front end with a de pending tooth adapted to enter the notches 128 of the hub 12'? of one of the toothed wheels 126 to limit the movement of said wheels to one fourth of a revolution. Each of said stop-pawls is provided with an upwardly-projecting finger 137, which engages the front side of the adjacent arm 133 of one of the keys with a rearwardly-projecting lug 138, against which the lower end of said arm 133 bears, and with a downwardly-projecting finger 139, which is connected by a coil-spring 1 10 with the lower end of the adjacent arm 134 of a key. The length of the arms 132 and 133 of each keyis so proportioned that when the key is depressed the arm 133 will, by its engagement with the lug 138 of the stop-pawl, rock said pawl. to lift its tooth out of the notch in the hub of the toothed wheel just before the arm 132 engages a pin 129 on said wheel, thus leaving the latter free to be moved by the further depression of said arm 132. At

the same time such farther downward movement of the arm 133and the further rocking movement of the stop-pawl causes the finger 137 on the latter to force said arm 133- rearwardly out of engagement with the lug 138, whereupon spring 140 immediately rocks the stop-pawl in the opposite direction and causes the tooth at its front end to bear upon the periphery of the hub of the toothed wheel,where it is ready to drop into the next notch in the latter and thus prevent movement of the wheel beyond one-fourth of a revolution.

A suitably-insulated metallic bar 1&1 extends across the hed 1 in front of the vertical plane of the shaft 123, and a similar bar 142 is located in rear of said vertical plane parallel with the bar 141. To said bar 142 are connected a series of spring contact-fingers 143, (see Figs. 3 and 5,) which extend forwardly beneath the series of toothed wheels 126 and carry at their front end a contact-point 144, which normally stands out of engage ment with the bar 141, but which by a slight depression of the finger is caused to make .contact with said bar, there being one of said contact-fingers for each toothed wheel. At a point directly beneath the shaft 123 each of said contact-fingers is provided with an insulated stud or tooth 145, (shown in detail in Fig. 5,) which is maintain ed in engagement with the periphery of the toothed wheel 126, immediately above it, by the resiliency of the contact-finger.

A wire 146 connects one pole of a conveniently-located battery 147 to one ofthe helices of the magnet 115. A wire 148 connects the opposite pole of said battery to the bar 142, and a wire 14:9 connects the bar 141 with the opposite helix of said magnet. A normally open circuit is thus established which is closed whenever a contact-finger 143 is depressed by the engagement of a tooth on one of the toothed wheels 126 with the stud on said finger to cause the point 144 on the finger to make contact with the bar 141.

Each of the wheels 126 has its periphery divided into four equal parts, with the same number of teeth upon each of said parts, which number is distinctive from that of the teeth of any other wheel. For example, the

first wheel, operated by key 150 in Fig. 1,

has one tooth on each of its four quarters; the second wheel, operated by key 151, has two teeth on each of its four quarters; the third wheel, operated by key 152, has three teeth, and so on, each wheel having one more tooth in each of its four quarters than the preceding wheel, until the last wheel is reached. Each wheel, therefore, will produce a distinctive number of contacts of its finger 143 with bar 14:1 each time its key is depressed, and will, through the means described, move the rack-bar 63 a corresponding number of its teeth and produce a corresponding rotary movement of the type-wheel. hen there are three rows of characters on the typewheel, as in the example herein shown, each key will represent three characters, which it will bring into register with the impressionhammer, respectively, in one of the three vertical positions of the type-wheel, and two keys will be reserved for shift-keys to cause the elevation of said type-wheel to its second and third positions, respectively. I have herein shown the keys 150 and 151 as being reserved for this purpose. The key 150, whose wheel 126 has one tooth on each of its four quarters, upon being depressed causes a movement of one tooth of rack-bar 63 and moves the selector-leverQO one space to the left, thereby moving the acting tappet on the selector-disk to its first position, in which it is brought into radial alinement with the outer step 89 of the shoe 87 of lever 51, so that when said tappet engages said lever it will raise the type-wheel to its highest position andbring its third row of characters into alinement with the impression-hammer. The

shift-key 151, whose wheel 126 has two teeth on each quarter, will likewise cause the movement of the acting tappet to its second position, Where it will engage the inner step 88 of said lever 51 and will raise the typewheel to its second position to bring its second row of characters into alinement with the impression-hammer.

Neither of the two foregoing movements of the tappets will cause the actuation of the impression-hammer, for the reason that the shoe S5 of lever 84 (see Fig. 1) is so located relatively to the center of disk 55 that the tap pets must be moved to their innermost or third position in order to engage said shoe. Provision is thus made for securing the proper elevation of the type-wheel before an im pression is made by the hammer 41. A third key 152 is reserved for a space-key, its wheel 126 having three teeth on each quarter, whereby it will cause the acting tappet to be moved to its third position and will actuate the ham mer 41; but the space on the face of the typewheel which is thereby brought into register with the end of said hammer is left blank, so that no impression is made. I thus provide for spacing between the words of the written matter. The remainder of the keys are character-keys, their wheels 126 having varying numbers of. teeth on their quarters, as before described, the smallest number of such teeth,

-- however, being four.

Assuming the selector-disk to be at rest in the posit-ion shown in Fig. 1 and that a characterin the first row on the type-wheel is desired-say the letter aand that such character is found on the fourth key, whose wheel 126 has four teeth on each quarter, the operation of the apparatus is as follows: By the depression of said key its arm 134 rocks the detent 136 to release the hub of its Wheel 126, and its arm 132 engages one of the pins 129 on said Wheel and imparts to the latter onefourth of a revolution, the detent 136 then engaging the next notch or recess in the hub. During such movement of said wheel its four teeth cause the contact-finger 143 beneath it to make four contacts with the bar 141, thereby closing the open circuit through magnet 115 four times and rocking the escapement lever 113 four times. The weight 103 is thus permitted to revolve the shafts )9 and 106 a distance of four teeth of gears 112 and 105 and, through gear 98, to move the rack-bar 63 a corresponding distance,thereby,through gear 65, swinging the type-wheel 40 to a position in which the said letter a registers with the end of the impression-hammer 41. At the beginning of the movement of said rack-bar 63 its cam projection 62 depresses the front end of lever 61 and through the latter rocks the detent 59, causing it to release the bolt 57, thereby coupling the selector-disk 55 to the clutch-collar 54 on the rapidly-revolving driving-shaft 13. Such movement of said rack-bar also causes its pin 93 to swing the selector-lever 90 to its extreme position to the left, after which said pin traverses the long portion 94 of the slot in said lever without moving the latter, as before described. As soon as the selector-disk is coupled to the driving-shaft, as just described, the former partakes of the movement of the latter until the cam-block withdraws the bolt 57 from the clutch-collar, at which time the disk has completed one-third of a revolution, it being immediately brought to rest by the action of the spring-actuated pins 77. During such partial movement of thedisk the tappet 66, being in its third position, engages the shoe of lever 84 and through lever 82 causes the hammer to rock on its pivot and print the said letter a on the paper carried by the carriage 4, after which the cam projection 56 on the disk adjacent to tappet 68 engages the arm 121 on shaft 39 and returns the latter and the rack-bar 63 and the parts connected therewith to their normal position again, the stationary cam 96 moving the tappet 68 to its outermost position. In the forward movement of the hammer just mentioned its arm 43 carries the double pawl 44 45 across the ratchet-bar 45 on the carriage and permits the latter to feed forward one tooth, as before described, just before the hammer engages the paper. The key bearing the next desired letter is now struck and the operation is repeated, the tappet 68 now being the acting tappet, and so on until the end of a word is reached, when the space-key 152 is struck, causing the same operation, but making no impression, as before described.

hen the carriage reaches the end of its forward movement, the paper is fed upwardly for a new line by the action of the stationary cam 36 and the pawl-actuating rod 34, and the carriage is moved back to its startingpoint by the worm l6 and lever 18 20, all as hereinbefore described.

WVhen the character in the second or third row on the type-Wheel is desired, the operation is the same as just described, except that two movements of the selector-disk are required. The first of such movements, caused by depressing key 150 or 151, as the case may be, secures the proper radial position of the acting tappet and carries it to the position in which tappet 6'7 appears in. Fig. 1 without actuating the hammer, as before described, and the second movement, caused by depressing the key bearing the desired character, causes the said tappet to elevate the typewheel by its engagement with lever 51, while the succeeding tappet, during the same m ovement of the disk, actuates the hammer to make the impression.

It will thus be seen that the apparatus herein described can be operated even more readily than an ordinary type-writing machine, the operator being spared the labor of feeding the paper forward and returning the carriage after the completion of a line, and that the apparatus is thereby adapted for rapid work. 'l hedriving-shaft 13 will preferably be driven at a speed of from fifty to sixty revolutions per minute, a very small motor being sulficient for the purpose.

lVhile the weight of shaft 39 and the typewheel would probably always return the lift ing-lever 51 to its normal position after an elevation of said shaft and table, I prefer to assist the action of gravity by the use of a spring 153, inserted between the long arm of said lever and the bed, as shown in Fig. 7, and thus insure the perfect operation of said lever under all circumstances.

It will be apparent that by locating the magnets of a number of the machines herein described in the same electric circuit all of said machines would be operated simultaneously by manipulating the keys of any one machine, as are the sounders of the ordinary system of telegraphing. Such is the main object for which the machine herein described has been devisedviz., to enable an operator to produce type-written matter at the sending-point and to have such. matter automatically duplicated at various other points near or remote by the same operation, the automatic selection of the desired letter or character being secured by varying the number of contacts of circuitclosing mechanism on the sending machine.

By the use of the ordinary switch or cutout in connection with each station any two machines in the circuit can be operated by the sending operator to the exclusion of the others, as in ordinary telegraphing.

It will be obvious that the particular means herein described for closing the circuit namely, the toothed wheels 126 and flexible fingers 143are not essential to the successful practice of the invention, there being various other forms of circuit-closing devices which can be employed in a like manner, it being essential merely that such devices be so constructed that the depression of each of the keys shall cause a distinctive number of circuit-closing contacts.

It will be obvious also that modifications of the various other details of construction herein shown and described can be made within the spirit of the invention.

The machine herein described is comparatively simple in construction, occupies but a comparatively small space, and is sure and positive in its operation.

To avoid unnecessary complication of the drawings I have omitted to show the ink ribbon and its support butit will be understood that such a ribbon will be interposed between the type-wheel and the paper, and will be supported and given a feeding movement in any suitable mannerfor example, like the ribbon on the before-mentioned Hammond type-writing machine-or that any other suitable means for supplying ink to the characters on the type-wheel can be employed.

Having thus fully described myinvention, what I claim, and desire to secure by Letters Patent, is

1. In an apparatus of the kind specified, the combination with a revoluble type wheel or segment bearing the character to be printed, and'a carriage for supporting the paper ad jacent to said type-wheel, of a pivoted iinpression-hammer, a revoluble selector-disk carrying radially-movable tappets which are adapted in one of their positions to actuate said hammer, a selector-lever for imparting radial movement to said tappets upon said disk, a rack-bar operatively connected with said selector-lever for moving the latter, a shaft having gear connection with said rackbar and carrying a pulley, a cord and weight for revolving it in one direction, an escapement mechanism governing the movement of said shaft, an electromagnet and armature for operating said escapement mechanism, a series of keys bearing characters corresponding to those on said type-wheel, and a series of circuit-closers, operated by said keys, for closing the circuit through said magnet, substantially as described.

2. In an apparatus of the kind described, the combination with atype wheel or segment and an impression-hammer, of a drivingshaft, a selector-disk carrying radially-movable tappets which are adapted to actuate said hammer in one of their positions, a clutch device for connecting said disk to said driving-shaft, a shaft driven. by a weight, intermediate connections between said latter shaft and said clutch device whereby the former operates the latter to connect said disk to the driving-shaft, an escapement mechanism governing the movement of said weight-driven shaft, an electromagnetand armature for operating said escapement mechanism, a series of keys, and a series of circuit-closers, operated by said keys, for closing the circuit through said magnet, substantially as set forth.

In a machine of the kind described, the combination with a revoluble type wheel or segment bearing upon the face thereof a plurality of rows of characters to be printed, and an impressiorrhammer, of lever mechanisms for imparting vertical movement to said typewheel and for actuating said hammer, a revoluble selector-disk carrying devices for engaging and actuating said level-mechanisms, adriving-shafthaving clutch connection with said disk, a series of keys bearing characters corresponding to those on said type-Wheel, and intermediate connections between said keys and the clutch connecting said drivingsh aft and disk, whereby the depression of any one of the keys will actuate said clutch to lock the disk to the shaft, substantially as set forth.

4. The combination with the type-wheel and impression-hammer, ofthe selector-disk carrying a plurality of radially-adjustable tappets, the selector-lever for causing movement of said tappets toward the center of said disk, and a stationary cam for moving said tappets in the opposite direction, substantially as described.

5. The combination with the type-wheel and the impression-hammer of the selectordisk carrying tappets as described, the drivin g-shaft having clutch connection with said disk, means for actuating said clutch connection to lock the disk to said shaft, and means for automatically disconnecting the disk from the shaft when the former has made a one-third revolution, substantially as de scribed.

6. The combination with a vertically-disposed shaft carrying a type wheel or segment at or near its upper end and a gear at or near its lower end, of a rack-bar engaging the teeth of said gear, an impression-hammer, a selector-disk carrying engaging means for actuating said hammer, a driving-shaft, clutch mechanism for connecting said shaft to said disk, a clutch-operating lever engaging a projection on said raclebar, whereby the latter at the commencement of its movement will actuate said clutch mechanism to lock the disk to the shaft, means for automatically disconnecting the disk from the shaft when the former has made a partialrevolution, a series of keys, intermediate connections whereby each of said keys, when depressed, will cause movement of said rack-bar, and means for automatically returning the rack-bar to its normal position after each of said movements, substantially as set forth.

7. The combination with a vertically-disposed and vertically-movable shaft carrying a type wheel or segment and also a spur-gear, of a rack-bar engaging the teeth of said gear, a lever mechanism for imparting vertical movement to said type-wheel shaft, an impression-hammer, a lever mechanism for actuating said hammer, a driving-shaft, a selector-disk carrying radially-adjustable engaging means for actuating said lever mechanisms respectively, a clutch mechanism for connecting said disk to. said driving-shaft, a selector-lever for securing radial adjustment of said engaging means on said disk,- intermediate connections between said clutch mechanism and selector-lever and said rack bar whereby the former are operated by the latter, a series of keys, intermediate connections between each of said keys and said rackbar whereby the depression of a key will cause movement of the rack-bar in one direction, and means f or returning the rack-bar to its normal position after each of said movcm ents, substantially as described.

8. The combination with a type wheel or segment and an impression-hammer, of a rackbar, intermediate connections between said rack-bar and said type-wheel and hammer whereby movement of the former in one direction will cause a partial revolution of the type-wheel and a striking movement of the hammer, a shaft carrying a spur-gear which engages said rack-bar and also a cord and weight for revolving it in one direction, an escapement mechanism operatively connected with said shaft for governing the move ment thereof, an electromagnet and armature for operating said escapement mechanism, a battery connected in circuit with said magnet, a series of keys, and means whereby said keys are caused to close said circuit when depressed, substantially as described.

9. The combination with a type wheel or segment, of a paper-holdin g carriage carrying a rack, a spring-actuated gear engaging said rack for moving said carriage in one direction, a pivotally-mounted impressioirhammer carrying a double pawl which engages a ratchet-bar on said carriage, a driving-shaft carrying a worm, a two-armed lever having one arm thereof connected to said carriage and having its other arm connected with a slide-block carrying a spring-actuated pin to engage the worm on said shaft, a detent on said block normally retaining said pin out of engagement with said worm, and means for automatically actuating said detent to release said pin when said lever reaches the end of its movement in one direction, substantially as described.

10. The combination with the type wheel or segment and the pivotally-mounted impressiomhammer, of the revoluble selectordisk carrying a radially-adjustable tappet which projects below the surface of the disk, a lever having mounted thereon a shoe which is adapted to be engaged by the lower end of said tappet in one position of adjustment of the latter, intermediate connections between said lever and said hammer whereby depression of the former will cause a striking movement of the latter, the selector-lever adapted to engage said tappet to move the latter toward the center of said disk, said lever having a pivotal support at one end and having at its opposite end an angular slot as described, the rack-bar provided with a pin which enters the slot in said selector-lever.

and means substantially as described for imparting a step-by-step movement to said rackbar in one direction, substantially as described.

11. The combination with the type wheel or segment and the impression-hammer, of the driving-shaft carrying a fixed clutch-collar, the loosely-mounted selector-disk carryin g tappets as described and provided on its under side with a plurality of spring-actuated bolts to engage the clutch-collar on said shaft and with pivoted detents to engage said bolts and hold them out of engagement with said collar, a lever having one end thereof in engagement with the free end of one of said detents in each position of rest of said disk, a rack-bar provided with a cam projection adapted to engage the opposite end of said lever, a stationary cam for withdrawing the acting bolt on said disk from said clutch-collar when the disk completes a one-third revolution, and means for causing longitudinal movement of said rack-bar, substantially as set forth.

12. The combination with the carriage 4 and means for imparting thereto a step-bystep movement in one direction, of shaft 13 carrying worm 16, block 22 vertically movable on the ways 23, said block carrying the springpressed pin 26 and the detent 29 adapted to normally hold said pin out of engagement with said worm, stop 30 at the lower end of one of said ways 23, and lever 18, 20, having one arm thereof connected to said carriage and its other arm connected to said block 22, substantially as set forth.

13. The combination with hammer 41 provided with a projection, as 81, of lever 82 engaging said projection at one end, lever 84 carrying the shoe 85, rod 83 connecting said lever with lever 82, selector-disk 55 carrying the radially-adjustable tappets 66, 67, 68, and means for imparting a partial revolution to said disk, substantially as described.

14. The combination with hammer 41, of lever 84. operatively connected with said hammer and carrying shoe 85, disk 55 carrying the radiallyadj ustable tappets 66, 67, 68,selectorlever 90 having the projection 92 adapted to engage said tappets and provided at its free end with the angular slot 94:, 95, rack-bar 63 carrying a pin which projects into the slot in said selector-lever, the stationary cam 96 for moving the tappets on said disk to their outermost position, means for imparting a partial revolution to said disk, and means for moving said rack-bar in opposite directions, substantially as described.

15. The combination with the shaft 13 provided with the fixed clutch-collar 54, of the loosely-mounted disk 55 carrying on its under side the spring-pressed bolts 57 to engage said clutch-collar and detents 59 to normally retain said bolts out of engagement with said collar, lever 61, rack-bar 63 provided with the cam projection 62, stationary cam 75, and

means for moving said rack-bar in opposite directions, substantially as described.

16. The combination with the shaft 30 carrying the type-wheel 40 and gear 65, of the lever 51 havinga swivel connection with said shaft at its lower end and carrying shoe 87 provided with the steps 88, 89, selector-disk 55 carrying the radially-adjustable tappets 66, 67, 68, selector-lever 90, rack-bar 63 meshing with said gear and having a pin-andslot connection with said selector-lever, and means for moving said rack-bar in opposite directions, substantially as described.

17. The combination with the shaft 39 carrying type-wheel 40 and gear 65, of rack-bar 63 meshing with said gear, shaft 99 carrying gear 98 which meshes with a second set of teeth on said rack-bar, said shaft also carrying the grooved wheel 101 and gear 102,weight 103 having its cord 104 passed about said wheel 101, shaft 106 carrying pinion 110 and gear 112, gear 105 loosely mounted on said shaft and carrying the pawl 108 which engages said pinion 110, escapement-lever 113 engaging said gear 112 at one end and at its opposite end carrying the armature 114:, magnet 115, battery connections for establishing a circuit through said magnet, and means for opening and closing said circuit, substan: tially as described.

18. The combination. with a type-printing mechanism and means for operating the same, of an escapement for governing the movement of said operating means, the electromagnet 115 and its armature 11a for operating said escapement mechanism, a battery, as 147, a series of circuit-closers located in the circuit between said battery and said magnet, a series of loosely-mounted wheels, as 126, each of which wheels has repeated upon each quarter of its periphery means for actuating one of said circuit-closers a predetermined number of times and has projecting from the side thereof four equidistant engaging devices, as the pins 129, and the series of pivotally-snpported 'keys 130 each of which is provided with a pivoted depending arm 132 to engage successively the engaging devices on one of said wheels and impart a quarter revolution thereto at each downward movement of the key, substantially as described.

19. The combination with a loosely-mounted wheel 126 having projecting from one side thereof the hub 127 provided with four equidistant recesses 123 and from the opposite side thereof four pins 129, of a key 130 provided with the pivoted depending arms 132, 133 andwith the rigid depending arm 134, the pivotally-mounted stop-pawl 136 provided with the projection 13S and the fingers 137, 139, and springs 135, 140, arranged and operating substantially as and for the purpose described- 20. The combination with the shaft 39 car- 'rying the type-wheel 40 and gear 65 and hav- IIO in g a partial revolution to said disk, substantially as described.

LEO R. HAMMOND.

\Vitn esses:

WM. 11. CHAPMAN, WM. H. ELY.

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