US336284A - Learner s telegraphic instrument - Google Patents

Description

(No Model.)

B. BONSALL.

LEARNERS TELBGRAPHIG INSTRUMENT. No. 336,284. 2? 1 Patented Feb. 16, 1886.

W/A A M [k BYJLu/ww ATTORNEYS.

Tins. Phmouuwgnphen Washinginn, 0.4:.

UNITED STATES PATENT OFFICE.

EMMOR BONSALL, OF DAVENPORT, IOWA.

LEARNERS TELEGRAPHIC INSTRUMENT.

SPECIFICATION forming part of Letters Patent No. 336.284, dated February 16, 1886.

Application filed February 3, 1885. Serial No. 154,823.

To all whom it may concern:

Be it known that I, EMMOR BONSALL, of Davenport, in the county of Scott and State of Iowa, have invented a new and Improved Telegraph-Instrument, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved telegraphinstrument for producing the clicks or sounds of the Morse characters on a Morse sounder by mechanical means, thus enabling students to produce the sounds easily and rapidly, and to learn to read letters, words, and messages transmitted by means of a Morse sounder.

The invention consists in the combination, with a frame having spring-contacts connected with the circuit-wires, of devices for pulling a slotted or recessed strip between the said spring-contacts, thus breaking and closing the circuit.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan View of my improved telegraph-instrument. Fig. 2 is a longitudinal sectional elevation of the same, on the line a; m, Fig. 1. Fig. 3 is a cross-sectional elevation of the same on the line g y, Fig. 1. Fig. 4 is a similar sectional view to Fig. 2 of my invention, showing the rolls or points out of contact with the interposed pattern-strip, being opposite an aperture or perforation of the pattern-strip.

Two rollers, A A, are journaled in the up right part of the frame B, at one end of the same, both rollers being covered with rubber, and one of them having a crank-handle, I, for turning it. The frame B is provided in each end with a guide-slot, G, in line with the space between the rollers. Binding-posts D are held on the top and bottom of the frame, at the end opposite the one at which the rollers A are located, and with each post a springcontact, F, is connected. On the free end of the lower spring, F, a roller, F, is pivoted, which is in electrical contact with the said spring. The line-wires G are held in the binding-posts, and a battery and a Morse sounder are in the circuit. Strips H, preferably made of paper or (No model.)

other non-conducting material, are provided with a series of slots, J, which are arranged to correspond in their size and arrangement with the Morse characters. Any number of these strips may be used; but preferably thirty-two of them are used, each having different char acters. A strip, H, is passed through the slots 0 and between the rollers A, and is moved in the direction of the arrow a by turning the crank-handle I. The upper spring, F, rests against the top of the strip H, and the roller F in the lower strip rests against the bottom of the strip. WVhen the ends of the springs come to a slot, J, the end of the upper spring can come in contact with the roller on the lower spring, the circuit is closed, and the click is produced by the sounder, the clicks varying according to the size and arrangement of the slots. Then the contact is broken by the paper between two slots, and so on alternately. By moving the strips H through the apparatus a number of times the clicks or letters are repeated, and the student can easily commit them to memory. The knowledge of manipulating the key is not required to produce the sounds, as all that is necessary is to turn the crank I.

In place of using paper strips H, metal strips may be used, which are either slotted in the manner shown, or have recesses in their upper surfaces. The springs rest against both surfaces of the strip, and thus the contact is closed; but when a slot comes between the points of the springs the circuit is broken, as the point of the top spring cannot work down to the bottom of the recess or within the notch to come in contact with the roller F, the springs being arranged so that they will just be in contact with the surface of the strip, but will not spring together to come in contact with each other.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a telegraph-instrument, the combination, with a perforated pattern-strip of conducting material and its feeding-rolls, of the spring-arms connected to the line-wire bindingposts, and having their free ends or points arranged to stand out of contact as an aperture or perforation of said strip is brought into posts, andhavingtheirfree endsor points, one 10 coincidence with said points or ends of arms, of which is provided with a roll, arranged to the circuit being completed by the conductivstand out of contact as an aperture or perfoity of the said strip and springarms, substanration of said pattern-strip is brought into 00- 5 tially as set forth. incidence with said points or ends of arms, 2. In a te1egraph-instrument, the combina substantially as and for the purpose set forth. tion, with a perforated pattern-strip of con- Witnesses: EMMOR BONSALL. ducting material and its feeding-rolls, of the JACOB M. ELDRIDGE,

spring-armsconnected totheline-wirebinding- L. M. FISHER.

Images