US130261A - Improvement in printing-telegraph instruments - Google Patents

Description

2 Sheets--Sheei 2. M. F.WESSMANN.

Improvement in Printing-Telegraph Instruments.

N0. 130,261. 'Pa-tented Aug. 6, 1872.

UNITED STATES PATENT IMPROVEMENT IN PRINTING-TELEGRAPH INSTRUMENTS.

Specification forming part of Letters Patent No. 130,261, dated August 6, 1872.

To all whom it may concern:

Be it known that I, MARTIN RWEssMANN, of Brooklyn, in the county of Kings and State of New York, have invented an Improved Printing- Telegraph Instrument; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing making part of this specific'ation v Figure 1 being a side view of a portion of a printingtelegraph instrument, showing my improvements; Fig. 2, a side view at right angles to the view in Fig. l of the type-wheel and printing-magnets, and the side armature employed in connection with the type-wheel magnet; Fig. 3, a plan of the local-circuit breaking and closing mechanism employed in this invention.

Like letters designate corresponding parts in all of the figures.

The object of this invention is to produce an electro-magnetic printing-telegraph having but one line-wire, and printing both on the open and closed circuit by means of a local battery and local circuit, all substantially as hereinafter specified.

Let A represent the type-wheel magnet of the instrument; B, its type-wheel moving armature; O, the printing-magnet and D, the local battery, connected with the printingmagnet by wires a and b. A side armature, E, is employed, vibrating laterally to and from the cores 0 c of the type-wheel magnet A on a pivot, d, the force of a counter-spring, f, alternating with the attraction of the magnet, so that this armature vibrates simultaneously with the regular armature B of the magnet.

' Below the pivot d of this side armature projects therefrom a lever-arm, G, which consequently vibrates laterally with the armature, and it is long enough to produce the required extent of vibratory movement at its lower end, which is arranged between the adjacent ends of two vibratory levers, H and I, by the movements of which the local circuit of the printing-magnet G is broken and closed. If desired, either for changing direction or increasing the extent of movement, the lever G may be compound, as represented in Fig. 2. The two levers H and I are respectively connected with retarding-gear f f f and g g g, the whole arrangement being conveniently placed beneath the regular receiving instrument, in an insulated frame, h.

The movements of the levers H I and dependent parts are substantially as follows The vibrating lever H is employed to close the local circuit for printing on the closed main circuit. For this purpose it is itself a part of the local circuit of the printing-magnet G and its local battery, together with the frame h and wires i k, and binding-post Z, the entire arrangement being such that when the adjacent end of the lever strikes the bindingpost, or an adjusting-screw, m, therein, the local printing-circuit is closed, and wh the lever is separated therefrom (as shown in Fig. 3) the local circuit is opened. The vibrations of the side armature E through the lever G throws the lever H away from the binding-post or circuit-closing point, and a counter spring, a, draws the lever to the post and closes the circuit for printing when the lever G is held away from the other end of the said lever H by the attraction of the armature E to'the magnet A. The vibrating lover I, on the other hand, is employed to effect the printing on the open main 'circuit. For this purpose one or more of its train of retarding-gear g g 9 form part of the local printing-circuit, together with a circuitclosing spring, 0, the frame h, and wires 1' p. The circuit-closing spring or spring-point 0 is kept between the teeth of the adjacent gearwheel g, so as not to come in contact with the adjacent cogs thereof, by a detent, q, as shown in Fig. 3. The lever I has a pawl, 1", which takes into the teeth of a ratchet-wheel, s, attached to or turning with the cog-wheel g referred to, so that when the adjacent end of the lever is thrown back by the lever G the pawl will take hold of an advance tooth of the ratchet-wheel, ready,when the lever G is moved away from the said lever I by the armature E, being held away from the magnet A, as in Fig. 2, for a counter-spring, t, acting on the lever, to move the ratchet-wheel and cog-wheel beneath it to the extent of one cog of the cogwheel, if allowed by the detent g. In order to lift this detent from the cog-wheel at the proper moment a finger, 20, projects from the lever I, as shown in Fig. 3, and is so adjusted that it strikes the detent and moves it away from the cog-wheel, when the other end of the lever I is thrown back far enough to take a FFICE.

new ratchet-tooth by its pawl 1, thus allowing the cog-wheel to turn one cog; and it again recedes and allows the detent to take into the next notch of the cog-wheel as soon as the ratchet-wheel has moved the proper distance to bring the spring-point 0 out of contact with the next cogs of the cog-wheel. Thus, although by the movement just described the spring'point 0 closes the local circuit by passing over one cog of the cog-wheel 9. so as to effect the printing, it again breaks the 10- cal circuit and keeps it open till the next movement of the type-wheel commences. The lever I is moved by its counterspring t but slowly, on account of the retarding-gear g g g, and the circuit-closing motion of the lever H is likewise retarded by its retarding-gear f ff, which is clutched to the lever by a drum, n, and clutch-finger or frictionpawl, w, which yields and slips in the drum without turning the gear when the lever H is thrown the other way by the action of the armature-lever G. Hence, during the step-bystep movement of the type-wheel, the vibrations of the armature E and its lever G, being simultaneous therewith and rapid, keep the adjacent ends of the levers H I separated to the extent of the vibratory motions of the said lever G, thgreby holding both the levers H I away from circuit-closing contact with the assistance of their respective retardinggear; but on stopping the step-by-step movement of the type-wheel each time for a second or two, the lever B or I, as the case may be, has time to close the local circuit and effect the printing.

without requiring a printing-key.

The armature E, represented herein as and called a side armature, is not necessarily arranged at the side of the magnet-cores, but may be applied at the end thereof; nor need it be applied to the type-wheel magnet A, but

bus the printing is automatic,

may be the ordinary armature of an additional magnet located in the line-circuit.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The side or additional armature E, with its arm or lever G vibrating simultaneously with the type-wheel armature B, in combination with the vibratory local-circuit-closing levers H I, substantially as and for the purpose herein specified.

2. The vibratory-lever H, arranged and operating, substantially as described, in the local printing-circuit, in combination with the side armature-lever G, for printing automatically with closed circuits, substantially as herein specified.

3. The vibratory lever I, arranged and operating substantially as described, in combination with the side armature-lever G, for printing automatically with open circuits, substantially as herein specified.

4. The retarding-gears f f f and ggg, in combination with the circuit-closing levers H I, as specified.

5. The combination of the lever I, pawl and ratchet-wheel r s, notched or cog wheel G, detent q, spring-point o, and finger to, operating substantially as described, for effecting the printing and then leaving the local printingcircuit open, substantially as herein specified.

6. A printing telegraph instrument, constructed so that with one line-wire and a local printing-circuit it prints automatically and leaves the local circuit either open or closed, substantially as herein specified.

Specification signed by me in presence of witnesses.

MARTIN I WVESSMANN.

Witnesses:

Bo. H. GALLAHER, En. A. GALLAHER.

Images