US286667A - wirsghirg - Google Patents

Description

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(No Mofiel.) l A, WIRSCHING. PRINTING TBLBGRAPH. No. 286,667. Patented Oct. 16, M888.

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PRINTINGTELBGRAPH. No. 286,667. Patented Oct. 16, 1883.

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PRINHNG TELEGRAPH. No. 286.667. Patented Oct. 16, 1883.

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, PRINTING TELEGRAPHQ No. 286,667. r Patented Oct. 16, 1883.

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N. PEIRS. Mir-Limoinphlf, im DAL UNITED STATES PATENT rricne ALOYS VVIRSGHING, OF BROOKLYN, NEWT YORK.

PRINTING-TELEGRAPH.

SPECIFICATION forming To colt wir/017?, it may concern,.-

Beit known that I, ALoYs Wrnsorrnve, of Y Brooklyn. in the county of Kings and State of New York, have invented certain new and useful Improvements in Printing-Telegraph Instruments; and I do hereby declare that the following is a full' and exact description This invention relates more particularly` to that class of instruments in which two type- Wheels are employed, impressions from either of which may be produced at the Will of the operator at the transmitting-station. Certain parts of the invention may, however, be used ad vantageously in connection with instruments having but one type-Wheel. v

\ In a patent granted to me October 3, 1882,

No. 265,353, I have described a printing-telegraph instrument in which a single polarized armature of a horseshoe electro-magnet is employed to control, luy-means of an escapement,

the rotation ofthe type-Wheel. According to the present invention, I employ forthis purpose two electro-magnets, preferably of the horseshoe type, and a ydouble polarized armature,

so arranged on a permanent horseshoe-magnet that one member of said armature is constantly charged by the north pole of the permanent magnet, While the other is constantly charged bythe south pole thereof. Theftwo electromagnets operating this double armature are so arranged that one pole of each co-operates with one of the tivopmembers of the armature While the other poles of said electro-magnets co-operate with the second member of the armature. These escapement electro-magnets are simultaneously energized by a rapid succession of alternating electric impulses of opposite polarity transmitted over the line-Wire -irom a suitable transmitting-instrument, and

the double armature carries a single pallet,

which 'engageswith the teeth ,of the lescapement-Wheel, Ksaid teeth being arranged in two concentric rows. The printing is effected by means of a separate magnet, the armature of o which is xedrupou the axis of the printinglever. Boththe escapement-magnets and the printing-magnet are actuated by the same current transmitted over the line-Wire; but the printing-magnet is arranged in multiple arcV with relation, to the two escapement-magnets,

the latter being consideredA as. av unit, while part of Letters Patent No. 286,667, dated October 16, 1883. l n y Application mea June 11,l lees. No man.)

these escapement-magnets, considered sepav rately, are arranged in series in the split circuit of the instrument. Y escapement-magnets is larger than that of the printing-magnet, and consequently the latter is not affected sufficiently to operate the printing-lever so long as the rapid succession of alternating electric impulses of opposite po'- 6o larity continues to be received by the instrument, While the escapemcnt electro-magnets are affected to a sufficient extent to operate their dou-ble armature, and consequently the escapement; butas soon as an impulse of either 65 polarity is allowed to continue for a longer period, the'printing electro-magnet becomes sufficiently charged to attract its armature, and consequently raise the printing-lever; and

in order` now to obtain all the available power 7o from the current for effecting the printing, I arrange, inconnection With the printing mech anism, a circuit-breaking` device, which, after the type-Wheel has arrived in the desired position, and as soon as the printing-lever has 75 begun its movement, breaks the circuit in that branch of the instrument which contains the escapement electro-magnets, so that then the entire current transmitted over the line is thrown upon the printing-magnet, thus in- 8o creasing the power thereof, and consequently the forcefwith whichA the impression-pad is pressed against the type-Wheel. On the return of the printing-lever to its original position the circuit in the branch ofthe escape- 85V nient-magnets is again closed and the operation of the instrument continues. The arrangement of the escapement-magnets with relation to the printing-magnet, as described, offers another important advantage. be noticed that the two branches, containing the one the escapement-magncts and the other the printing-magnet, constitute a close circuit `vvithin the instrument, and since, as above stated, the

escapement-magnets offer considerable electri- 9 5 calresistance, the induced current or discharge' in the opposite direction from Ythese elect-romagnets, which occurs at every interruption i and reversal of the current transmitted over the line, becomes effective in rapidly releas.-A roo 'ing the double armature and helpingy the subsequent impulse from the line, which isinthe same direction as the local discharge, to cause the oscillation of the armature, allowing the The resistance of the 55 It will 9o direction with a step-by-step motion, at the will of the operator at the transmitting-station, according as he desires the impressions to be taken from one type-wheel or the other.

The mechanism for effecting this is simple,

there being arranged two ratchet-wheels corresponding to the two parts of the impressionpad, and two pawls, either of which is thrown into position at given positions of the escapement-arbor, to operate upon its ratchet-wheel when the latter is broughtin contact therewith by the operation of the printing-lever.

Certain minor details of the invention will be referred to further on.

The accompanying drawings form a part of this specification, and represent what I consider the best means of carrying out the invention.

Figure 1 is a plan view of my improved instrument.v Fig. 2 is a front elevation thereof. Fig. 3 is a section on the line x, Fig.'1. Fig. 4 is a section on the line y y, Fig. 1. Fig. 5 is a plan of a portion of the escapement-wheel and its controlling-pallet. Figs. 6 and 7 are sections on the line az, Fig. 5, showing the parts in two different positions. Figs. 8, 9, and 10 are elevations, partlyin section,of some of the parts shown in Fig. 2, said parts being represented on an enlarged scale in different positions. Figs. 11 and 12 are diagrams. Fig. 13 shows la portion or" astrip of paper printed on my instrument. Fig. 14 shows a modification Lof certain parts.

Similarletters of reference indicate corresponding parts in all the igures.

A is the fixed frame-work.

B is the escapement-wheel arbor, driven in any suitable manner-for instance, by a train of clock-work actuated by a weight suspended on a cord running over a drum, as represented at the left of Figs. 1 and 3.

C and D are two horseshoe electro-magnets. E is a permanent horseshoe-magnet, arranged between C and D, and to the polesof which are pivoted the pieces F and G, these latter being connected with each other yby means of a bridge of non-magnetic material, and constituting therewith what I call the double polarized armature.77 The parts are so-arranged that the piece F is influenced by the pole c of the magnet C, and also by the'pole d of the magnet D, while the piece G is iniluenced by the poles c and d of said magnets.

H is the printing electro-magnet, the armature H of which is fixed upon the axis z' of the printing-lever I. The latter, when -at rest,4

l bears against alcontact-point, 1, which is insulated from the metallic framing A. The line-wire 2 is connected to the binding-post c. From the latter one connection, 3, leads to the magnet H, and from this magnet the connection 4 leads to the binding-post a', from whence the current passes either to the ground or over another line-wire to a second instrument. From the binding-post a .another connection, 5,leads to magnet C. From Gthe current passes through 6 to magnet D. From the latter it passes through 7 to the metallic framing A and printing-lever I, and from I through 1 and 8 to binding-post a. The magnets C and D are, so wound that when c becomes north pole and c south pole d will become south pole and d north pole, 'and when c becomes south pole and c north pole d will become north pole and d south pole. l

Referring to the diagrams Figs. 11 and 12, supposing the end of the permanent magnet E between the 'poles c and d to be the north pole oi' said magnet, then the part F of the double armature will constantly be charged by the north pole, and the partG will be charged by the south pole of saidpermanent magnet. Now, if an electric impulse oi' such polarity is sent over the line as will make c and d north poles and c and d south poles, then the righthand ends of the pieces F and G will both be attracted andthe left-hand ends will be repelled. Vhen, then, that impulse is interrupted, the local induced discharge from the coils of the magnets C and D will reverse the polarity of said magnets, and thus come in aid to the subsequent impulse of opposite polarity to the first transmitted over the line, whereby the rapid oscillation of the double armature is effected. The eiiiciency of this induced discharge from the coils of the magnets C and D is increased by the 'fact that the conductors a, 3 H 4 a 8 1 I A 7 D 6 C 5 constitute a closed circuit. Vhen an electric impulse of positive or negative polarity is allowed to pass over the line for a sufficient length of time to charge' the magnet H, so that the latter attracts its armature I-I and raises the printing-lever I, then immediately afterrsuch motion has commenced the contact atA 1. is broken and the entire quantity of the current is compelled to ilow from c, through 3, H, and 4, to a', thus increasing the power of the magnetH and effecting the printing in a more reliable manner. The printinglever I is depressed to its position of rest by a spring, I, which, on its upward movement, it has to deflect. This spring I is formed with a hook, t, th at engages with a pin, i2, so as to arrest the spring just before the lever I reaches its position of rest and makes contact at 1. The result'of this arrangement is that at the beginning of the upward motion of the printing-lever,while the current still traverses both branches of the split circuit within the instrument, the only resistance offered to the motion of the lever I is its own gravity, and that this Vresistance is increased by the downward pressyure of the spring I only after the force of the log" IIO

magnet H` has increased by the Vbreaking of i of said groove are a suitable number-for inthe contact at l andthe resulting exclusion-y of the branch containing the magnets C andi The gravity of the. printing-lever I and1 its connected parts, after it has acquired the? momentum due to thepressure of the spring I', is sufficient to return it from the point where it ceases to be influenced by the spring I into contact with the point 1. 5

One advantage heretofore not mentioned of 1j the arrangement of the two horseshoe electromagnets G and D and the double polarized armature FG consists in the fact that thel; permanent magnet E is always maintained att Vthe degree of saturation to which it has been@ originallybharged, for while, in the ordinaryi single polarized armatures, the magnetic cir-2 cuit of the armature-carrying magnet can of course never be closed, so that the magnet; gradually loses its power, in my instrument,

' while not in operation, the magnetic circuit isl constantly closed, and while in operation said;

circuit becomes closed at everyv oscillation ofi the armature. This magnetic circuit is estab-lr lished from the poles of the magnetE through? the plates F and G and the cores of one or the@ other of the electro-magnets C or D, on whichf the plates F and G happen to' rest for the time being.

The escapement-wheel B upon the arbor is formed with two concentric rows of laterally-i projecting teeth, b and b', which engage alter- -nately with the pallet Z22, projecting from ani arm, b", of the bridge-piece uniting the parts?` F and G of the double polarized armature., The operation oi' these parts will be fullyi understood on inspection of Figs. 5, 6, and 7 of the drawings. The combination of the; single pallet In?, the arm b3 of which is adjust-i able longitudinally, and may also be adjusted; vertically by simplyfbending itfslightly, con stitutes a great'advantage in the manufactura; as the teeth upon the wheel can be spaced andi finished with great exactness, and with thel utmost `facility, without any special reference to the position of the single pallet, which may@ be subsequently adjusted in mounting the in-L strument so as to properly cooperate withi said teeth. i

yThe type-wheels J and J 2 are rigidly mountfA ed upon the shaft B, as shown. For telegraphf ing stock quotations, &c., I propose to forniE one wheel, J with letters only and the other wheel, .R'with numerals and fractions, but I do not, confine myself to such particular arrangement. These' wheels should be sov mounted that the characters of one are exactly, or nearly so, opposite those of the other, as shown, so that when the arbor B is arrested` for an impression such impression would be; taken from both wheels simultaneously except for the intervention of mechanism now to bej described.

The printing-lever I carries a forwardly-pro-1 jecting pin, k, upon which turns lthe doubleimpression pad K. The latter is formed with a central annular groove, 7c', and on each side -ries the pivot a? of two pawls, M M2.

sides ofthe impression-padwthat is to say, the' teeth'of one break joints77 with the teeth of the other.

Upon the front plate of the Xed framingA is mounted an adjustable piece, A', which car- These pawls are provided with springs m m2, respectively, which tend to hold said pawls out of contact with the teeth ofthe ratchet-wheels L L2, their upper( arms bearing against the xed stop-pin mi. fhile both pawls are in this position the printing-lever I may be operated an indefinite number of times, bringing an impression-surface of one side or the other of the impression-pad, according to the position of the latter for the time being, against the corresponding type-wheel J or J 2, and effecting an impression from the latter upon the interposed paper strip X.

Supposing the parts to be in thepposition shown in Fig. 8, the pad being so placed that impressions can be taken fromthe type-wheel J, when it is now desired to partially revolve IOO the pad K. so as to bring the next following A impression-surface of that row which is in the' plane of the wheel Jl in position to make impressions, while presenting a hollow space to the characters of the wheel J', the escapement- .wheel is caused'` to be arrested at such a point that an yarm, X2, projecting radially from the arbor B, strikes against and presses outward the inclined endfof the upper arm of the pawl M2, presenting the lower arm thereof in the -path of the ratchet-wheel L?, so that as the printing-lever now moves upward a tooth of said wheel Ll cornes in contact with the lower arm of the pawl M2, whereby both ratchetwheels and the connected impression-pad are turned one step, presenting now an impressionsurface against the type-wheel Ji. A retaining spring-pawl, O, engages now with a tooth of the ratchet-wheel L and holds the pad firmly against any accidental turning back- In similarA manner, when it is` desired to change from impressions from the wheel J 2 to impressions from the wheel J the escapement-wheel is arrested in such position as to bring another radial arm, N', on the arbor B in contact with the upper arm of the pawl M,

whereby the lower end of the latter, on the elevation of the printing-lever, is brought in contact with a tooth of the ratchet-wheel L',

causing the latter and the impression-pad to `make a further step in the same direction, the

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a tooth in position to be acted upon.

impression being now taken from the wheel J 1, and the pawl O engaging with a tooth of the wheel L2 to prevent return motion. It will be noticed that each forwardstep or movement of the parts due to the impact of atooth of either wheel L or L2 against the end of its pawl M or M2 brings the following tooth of the other wheel into position to beacted upon by its pawl when the latter is operated by its radial arm on the arbor B, while thatwheel which has just been turned does not present a tooth to be acted upon by its pawl, even if the latter were pushed inward, the following tooth of that first wheel being only presented after the tooth of the second wheel has, by irnpact with the pawl of the latter, caused another forward step ofthe parts, and that being accomplished, the rst wheel will again present It follows from this that mistakes from any accidental cause are not liable to occur, which f would be the case if a second step could be made by the impression-pad in consequence of an impact with its pawl of a second tooth ofthe same wheel that has caused the previous step. In Fig. 8 these lparts are shown with the pad -in position to print from the typewheel J. Fig. 9 showsj the same parts with the pawl 'Mf in position toturn the pad on the elevation of the printing-lever, and, Fig. 10 shows the parts after such turning has been effected. The retaining-pawl O engages alternately with the teeth of the wheels L and L2, this being evident when it is considered that twice as many steps are'necessary to complete a revolution of the impression-pad as there are teeth in either of the wheels L and L2. In order to still further insure that the paper strip X shall not touch acharacter of that type-wheel which is to be inoperative for the time being, I arrange an arm, R, extending downward between the two type-wheels, J J 2. The free endofthisarm projects slightlybeyond the periphery or surfaces of the` characters of the type-wheels into the groove 7c of the impression-pad, so that when the latter, and with it the paper strip X, is raised to receive an impression, only that side of the strip X which is supported upon one of the raised impression-surfaces of one side of the pad will come in contact.

with the corresponding type-wheel, while the other side of the strip X, by coming in contact with4 the end of the arm It, is slightly deflected into the hollow space k2 on t-he other side of the pad, then presented toward the adjacent character of the other type-wheel, thus posichange the inclination as desired. The strip of paper to be printed passes through a slotted post, P, the end of which is screw-threaded and carries a nut, P, which may be screwed inward or outward, according to the width of the paper strip. This is an importan-t feature, inasmuch as it forms a ready adjustment and constitutes an efficient guide, the edges of the paper passing one along the inner end of the slot and the other along the inner face of the nut P, whereby the motion of the paper in a straight line is insured.

Q is a feed-roller, of 'rubber or other ,suitable. material, carrying in or near its central transverse plane a/serrated metal disk, q, upon which presses aspring-mounted roller, g', the paper strip passing between the rollers Q, q, and g, as shown. The feed motion is obtained by means of a ratchet-wheel, gand a spring pawl, q, 'pivoted to the end of the printing-lever I, so as to partially turn the ratchet g2, and consequently the roller Q q, at every return or downward motion of the printing-lever. Those spaces of the type-wheels whichA will come opposite the impression-surfaces of Athe pad K when one or the other of the arms N or N2 has thrown in its respective pawl M or M2, for partially turning the pad,

,may be either blank spaces, or they may contain simply a point, which will then be printed, as the first character of the series in the upper or lower row, as shown in Fig. 13.

Many modifications may be made in the details without departing from the principles of the invention. Certain parts may be used without the others. One modification which readily suggests itself, and which I propose to employ in some cases, is to place the pawls M M2 on the side opposite to that shown in IOO the drawings, their lower ends being in that pivoted to its poles a double armature, as described, in combination with two electro-magnets co-operating with said armature, an escapement-wheel, means for actuating said escapement-wheel, and means for controlling it, carried on said double armature, substantially as herein specified.

2. In a printing-telegraph instrument, the combination, with one or more escapementmagnets, of a printing-magnet arranged in multiple arc with reference to the former, and

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with a circuit-breaking device, as l, controlled 4 v-by the printing-magnet, and arranged to automatically cut out the escapement magnet or Vpurposes herein specified.

4. In a printing-telegraph instrument having two type-wheels upon a common shaft and means for actuating the saine, an impressionpad having two series of alternating raised impression-surfaces and depressions, in conibination with ratchet-wheels, as L L2, pawls M M2, for revolving the same at will with a step-by step motion, and with means, as O, for preventing any return motion, substantially as and for thepurposes herein specified.

5. 'In a printingtelegraph instrument, the combination of two type-wheels niounted upon.

'a common shaft, suitable means for revolving said shaft and arresting it in desired positions, radial arms N N2, proj eeting from said shaft,

and double-armed springpawls MlW, in coinbination with two ratchet-wheels, L L, dou- 3o ble-impression pad l ccarrying said wheels, and revolving upon a suitable pin projecting from the'printing-lever l, and with suitable means for elevating and depressing the latter, all arranged and adapted tooperate substantially as and for the purposes herein set forth.

6. In a printing-telegraph instrument, the double printing pad K, having a Central groove, It', and on each side thereof alternatl ing raised impression-surfaces 'and depres sions7 and capable ofbeing` operated with ref erence to two type Wheels, in the ina-nner herein set forth, in combination with anl arm, R, projecting downward between said typewheels and slightly beyond the surfaces of 45 their characters, substantially as and for the purposes herein specied.

In testimony whereof I have hereunto set my hand, at New York, this 10th day of May, 1883, in the presence of two subscribing wit- 5o nesses.

' ALoYs winsonine.

YVitnesses:

A. H. GENTNER, GEO. G. DE LACY.

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