US1372730A - Student's non-electric telegraph-key - Google Patents

Description

D. 6. WHITE.

STUDENTS NON-ELECTRIC TELEGRAPH KEY.

APPLICATION FILED SEPT. 30, 1919.

Patented Mar. 29, 19211.

WITNESSES A TTOR/VEVS ment for sending messages.

DAVID G. WHITE, OF BOSTON, MASSACHUSETTS.

STUDENTS NON-ELECTRIC TELEGRAPH-KEY.

Specification of Letters Patent.

Patented Mar. 29, 1921i.

Application filed September 30, 1919. Serial No. 327,389.

T all whom it may concern:

Be it known that 1, DAVID G. VVHITE, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Students Non-Electric Telegraph-Key, of which the following is a full, clear, and exact description.

This invention relates to a non-electric students or learners telegraph key and has for an object to provide an improved construction which will give a double sound on the order of a regular key, while at the same time presenting a simple construction which may be used in any position including in the pocket of a person.

Another object of the invention is to pro vide a cheap, simple and yet effective construction which will give the proper motion and position to the fingers and in fact to the entire hand without the necessity of using an electric current.

In the accompanying drawing:

Figure 1 is a perspective view disclosing an embodiment of the invention arranged in a hand.

Fig. 2 is a side view of the key shown in Fig. 1.

Fig. 3 is a sectional view through Fig. 2 on line 33.

Fig. a is a plan view of the blank from which the key is constructed or formed.

In ordinary telegraph keys a sounder is provided which in operation moves in one direction under the action of an electromagnet until its movement is stopped or arrested by part of the key whereby a sound or click is produced. When the circuit of the key is opened the sounder is released and moves in a reverse direction under the action of a spring, but is arrested by part of the instrument for producing a second sound; this allows for the reading of the dashes and spaces when using the instru- Heretofore in many of the practice or students telegraph instruments a single sound will be produced on each downward movement of the fingers but no sound on the upward movement. An arrangement of this kind does not give an accurate reproduction of the regular telegraph instrument. In the present invention a construction has been presented which is very simple and substantially fool-proof, while at the same time produces a sound upon a depression of the fingers and a sound when released similar to the regular electrically operated telegraph key now in commgn use in the commercial world.

Referring to the accompanying drawing by numerals, 1 indicates a blank from which the device is made. Preferably the device is formed from one piece and is stamped out and then bent up into the proper shape, though it could be made in several pieces and connected together without departing from the spirit of the invention.

From Fig. 4 it will be seen that the blank is provided with enlargements 2 and 3, enlargement 2 being designed to receive the end of the finger of the operator, while the enlargement 3 rests against the edge of the thumb. lVhenthe blank is bent, or formed into the proper shape, it presents the construction shown in Fig. 2 wherein the enlargements 2 and 3 merge into a looped spring section at fitting between the thumb and finger when in use. From the enlargement 2 a forward section 5 projects which is bent to produce an end section 6 and then a sounder 7 This sounder extends through anopening 8 which is preferably substantially the same width as the usual length of movement of the key of a full sized commercial telegraph instrument. A forward section 10 is also provided which is bent downwardly or substantially at right angles to the enlargement 3 to limit the forward positioning of the thumb. The spring action at the loop 4: continually, under normal conditions, holds the sounder 7, as shown in Fig. 1, against the contact surface 11 from which it may be moved by a downward movement of the finger. This downward movement is, of course, a quick movement and is of such length as to cause the sounder 7 to strike against the contact surface 12. Upon striking the contact surface 12 a sound will be produced and when the finger is moved off of the enlargement 2 or allows the enlargement and associate parts to move back the sounder 7 will also move back and roduce a second sound for indicatin a space. The enlargements 2 and 3, when the parts are in proper operating position, are substantially in alinement and also substantially in alinement with the section 9 so that a downward pressure of the finger of the operator will also cause a downward pressure on the side of the thumb whereby there will be no tendency of the device to leave the hand. The entire device may be made from any material, as for instance a good grade of steel or brass and of a proper size to fit an ordinary hand, though if desired it could be madein different sizes for children. The instrument necessarily fits into the hand and is consequently small enough to be carried in the pocket of school children and may be used as a source of amusement as one child can telegraph the other while his hand is in his pocket.

What I claim is:

1'. A non-electric instrument for teaching telegraphing comprising a substantially U- shaped spring, an up-standing member adjacent one end of the spring, said member being formed with an aperture having top and bottom walls acting as a pair of stops, and a sounder extending from the other end of said spring so as to project through said aperture, said spring acting to normally hold the sounder against oneof the stops and permit movement of the sounder so that it will strike the other stop.

2. An instrument for teaching telegraphing without the use of electricity comprising a spring, a sounder connected to one end of the spring, means presenting a pair of stops connected to the opposite end of said spring, said stops being positioned to straddle the sounder, and means for presenting a thumb and finger hold whereby the device may be held in one hand and operated by the correct finger.

3. In an instrument for teaching telegraphing, a device formed from a single blank so as to produce a U-shaped spring ing formed with a. spring loop merging at each end into enlargements, one enlargement acting as a bearing for the thumb and the other for one of the fingers, said finger enlargement having an extension bent for producing a soundin member and the thumb enlargement being bent for producing an upstanding section having anopening through which the sound member extends whereby when the finger is moved toward the thumb the sounding member will strike said upstanding section on one edge of the opening and when released will strike on the opposite edge so as to give two sounds for each depression by the finger and thereby simulate the sounds produced by a commercial telegraphing instrument;

5. An instrument for telegraphing formed from a single blank bent for producing a U- shaped spring member, said spring member at one end being bent to produce a sounder, and at the other end being bent to produce an upstanding section having a slot therein through which said sounder projects, said spring loop acting to resiliently hold the sounder against the section along one edge of the slot.

DAVID G. WHITE.

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