US954298A - Telegraph instrument. - Google Patents

Description

W. MoL. JACKSON. TELEGRAPH INSTRUMENT. APPLICATION IILED MAY 27, 1909.

Patented Apr. 5, 1910.

2 sums-81mm 1.

INVENTOI? KSON WITNESSES WILLIAM M. JRO

ATTORNEYS ANDREA acmmw (.0 pumommocmwsws.vmwmmon. n c

W. McL. JACKSON. TELEGRAPH INSTRUMENT.

APPLICATION rum) MAY 27, 1909.

Patented Apr.5, 1910.

2 sums-4mm 2.

INVENTOR WI LLIHM M. JACKSON WITNESSES A TTOHNE Y8 WILLIAM MCLEAN JACKSON, 0F GASTONIA, NORTH CAROLINA.

TELEGRAPH INSTRUMENT.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed May 27, 1909. Serial No. 498,628.

To all whom it may concern:

Be it known that I, \ViLLnm McLnAN Jaonsox, a. citizen of the United States, and a resident of Gastonia, in the county of Gaston and State of North Carolina, have made certain new and useful Improvements in Telegraph Instriu'nents, of which the following is a specification.

My invention relates to devices for facilitating the transmission of messages by means of telegraph instruments, and it consists in the constructions, combinations and arrangements herein described and claimed.

The main object of my invention is to provide means whereby the dots which are used in the ordinary Morse telegraph code may be made by the single pressure of a key, thereby doing away with the staccato movement of the finger of the operator. The long continued use of this movement causes the finger and hand of the operator to become fatigued and often results in telegraphers paralysis.

A further object of my invention is to provide means for automatically producing a series of dots by a single pressure of the key and for producing dashes by the pressure of another key while the first key is still depressed with the finger resting easily on it.

Other objects and advantages will appear in the following specification and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings in which similar reference characters indicate like parts in the several views and in wl1ich Figure 1 shows a plan view of a telegraph transmitter constructed according to my invention. Fig. 2 is a side view thereof. Fig. 3 is a detail View of the vibrator looking from the front of the instrument. Fig. l is a detail view of the vibrator looking from the rear of the instrument and Fig. 5 is a perspective view of the auxiliary key.

In carrying out my invention I provide a main base A bearing thereon the binding posts 13, C, and D. Carried by the main base is a key base E upon which are the adjustable pivoted bearings F and G for the pivots and g of the lever L. The key base also is provided with the binding post G. The lever L is provided with an insulated finger button M and constitutes with the latter a key for sending dots. The key is provided with an adjustable contact member N which is designed to limit the movement of the key in one direction while the stop 0 limits the movement in the other.

The construction of the vibratory memher and its operating lever is most clearly shown in Figs. 3 and It consists of a metallic base 1 having secured thereto a U-shaped standard U. Pivotally secured to the latter is a Z-shapcd bell-crank lever V whose laterally extending portion '21 carries a. thumb-screw o arranged to be engaged by the end Z of the lever L. The upper end of the Z-shaped bell-crank lever V has a later ally extending arm or pin o best shown in dotted lines in Fig. 2. Toward the lower part of the upright support U is an adjustable stop member J. The vibratory member consists perferably of a cylindrical weight V on the end of a rod Y which passes through an opening in the upper part of the support U being adj ustably secured thereto by means of the set-screw y. The rod Y has a reduced central portion 1 which constitutes a spring member and which is of suflicient resiliency to allow the cylinder W to vibrate back and forth. Secured to the base P is a second upright Z which is provided with the adjustable member 2 and the binding member X.

The construction of the auxiliary key K is clearly shown in Fig. 5. It consists of a piece of spring metal which is clamped by means of the binding screw F to the base E. Secured to the outer side of the strip 70 is the thumb piece If. The metal strip 70 is provided with a contact 70 arranged to engage the contact I) of the binding post B.

From the foregoing description of the various parts of the device the operation thereof may be readily understood.

The binding posts 0 and D are the main binding posts to which the line wires extend. The binding post D is connected to the bind ing post X and also to the binding post B while the binding post C is connected with the plate P and with the binding post C on the base E. It will be observed that when the button M is depressed the rear end of the lever L will press upwardly on the Z- shaped bell-crank lever V whose arm 42 normally presses the rod Y against the stop J through the action of the spring S on the standard U.

The normal position of the vibrating device is shown in Fig. 3 and in Fig. 4 the duce the dots.

rod Y which has been released by the pressureof the key" M swings over and makes contact with the screw 2. This is slightly beyond the vertical line of suspension ofthe rod Y which therefore vibrates back and forth and-makes and breaks the circuit at the point of contact. Since the base P is connected with one of the main binding posts C and the contact member 2 is in direct connection with the binding post D, the current will be made and broken to pro- Now if" a dash is wanted the operator presses the key Kin a side-wise direction with his thumb. The circuit is made and broken" as the thumb movesback and forth and since'the binding post D is connected to the binding post" B and the binding post C to binding post C, the circuit will be made and broken.

Let us assume that the operator wishes to send the word fix He first presses the button M thereby releasing the vibrator whichbegins to vibrate. As soon as the first connection is made whichis indicated by a click of the'sounder (each of these instruments being associated-with a sounder in the ordinary manner) he presses the auxiliary key 1C with his thumb and holds it for the usual length oftime 2'. c. for a length or time equal tothat of three dots. Hethen releases the auxiliary key and permits the vibrator 'which has been w' ibrating during this time to make one-more contactthus completingthe letter f -After aninterval he presses the button' M permitting the vibrator to make two dots sen ding the letter i. For the letter x the-button M is depressed and held while the vibratoris making six contacts. After' the first contact, l1owever,the key K is=moved laterally and held for an interval of three dots after which it is released, and the vibrator allowed to make two dotsbefore the button M is finallyreleased.

It Will be observed that the movements required with this device are much less'than those required in the ordinary telegraphic sender.

I am aware that similar devices have been provided for the purpose of doing away with the numerous movements for the-sending of messages. I desire to call'particular attention, however, tothe fact that'the auxiliary key -which makes the dashes is worked by lateral pressure and as clearly explained in the examples given", it is worked in connection with the key for sending dots Moreover in sending a dash while the vibrator'is operating thefinger operatingthe button M rests directly thereon and the hand does not'have to'be'held suspended while the auxiliary key is ma nipulated except with certain letterswhich begin with a dash. The provisionof a supportingmeans for the hand while the a pendulum securedto said support,-means for adjusting the lengthof-the pendulum, a lever arranged to be operated-bysaid key for setting the pendulumin motion, a spring for lrolding the lever 'in engagement-with the key and an auxiliary key in a shunt cir cuit with said pendulum.

.3. In a telegraphic transmitter, a key pivotally mounted for movement up and down, a support, a pendulumadjustably secured to'said support, a contact arranged to beengaged by said pendulum, alever pivotally mounted on said support for settingthe pendulum in motion, a spring attached to the upper end of said lever and to-thesupport for keeping the lever in engagement withthe key and an auxiliary key'in a shunt circuit with said pendulum.

4. In a telegraphic transmitter, a key arranged to be moved up and down, a support, a bellcrank lever and a vibratorsecured to said support, an arm on said bell-crank lever arranged to-hold the vibrator normally out of a central position, a contact arranged to be'engaged by said vibrator wllen the'latter is released, a spring secured to said bellcrank lever and adapted to hold the latterin engagement with the key' and an auxiliary key having electrical connection with said vibrator and said'contact and arranged'to be moved in a lateraldirection' for sending dashes.

In a telegraphic transmitter, abase, a lever pivoted on said base for upward and downward"movement, a spring secured to said base, a thumb piece secured to said 'spr1ng,.the"faces of said thumb piece and said spring being disposed in vertical" planes, a contact arranged atone side of the'spring adapted to be engaged bythe latter when'the spring is mo'vedlaterally through pressure on the thumb piece and a vibrating device arranged to be actuated by the first named key,said vibrating devicebeing in' shu-nt with said spring.

.WVILLIAM NIOLEiAN- JACKSON.

VVit-nesses:

ANNA" Mi H UTH, J. H. HILLYARD, J r.

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