US1128600A - Electrical type-telegraph. - Google Patents

Description

P. G. GRASME.

ELECTRICAL TYPE TELEGRAPH.

APPLICATION FILED MAR. 19. 1914.

L128,600. Patented Feb. 16, 1915.

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F. 0. GRASME.

BLBGTRIGAL TYPE TEDBGRAPH.

1 APPLICATION FILED MAILIQ, 1914.

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I. 0. GRASME.

ELECTRICAL TYPE TELEGRAPH.

APPLICATION FILED 111111.19, 1914.

Patented Feb. 16, 1915.

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if MWZZM I @MQ FREDERICK CARL GBASME, 0F HOBOKEN, NEW JERSEY.

ELECTRICAL TYPE-TELEGRAPH.

Specification of Letters Patent.

Patented Feb. 16, 1915.

Application filed March 19, 1914. Serial No. 825,760.

To all whom it may concern:

Be it known that I, FREDERICK CARL GRASME, a citizen of the United States, and a resident of Hoboken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Electrical Typc-Telegraphs, of which the following is a specification.

This invention relates to improvements in apparatus for selectively imprinting significant type characters upon a strip or tape of paper and particularlyto that class known as stock tickers, or printing telegraphs.

The objects, are, first to provide a mechanism of relatively few and simple parts, capable of performing its distinctive functions as above indicated in an easy, rapid and highly satisfactory manner. Second, to combine in the apparatus a dial upon which the characters are displayed, a type wheel synchronizable conjunctively therewith, a printing device whereby uniform impressions are attainable and a paper feed positive in its operation. These and other objects are attained by the novel construction and combination of parts hereinafter described and shown in the accompanying drawings, forming part of this specification, and in which:

Figure 1 is a general plan View of the receiving mechanism, actuating and printing means. Fig. 2 is a similar view of the transmitting mechanism. Fig. 3 is a partial perspective view of the paper control or feed finger and actuating lever. Fig. & is a partial side elevation of the impression device. Fig. 5 is a sectional view, taken on line 5-5 of Fig. 1. Fig. 6 is a partial plan view of the transmitting mechanism, drawn to an enlarged scale and partly in section. Fig. 7 is a sectional view taken on line 77 of Fig. 6. Fig. 8 is a perspective View of the paper feed and impression mechanism, and, Fig. 9 is a diagrammatic view showing the electrical connections.

In the form shown the invention is comprised of a platform 10 supported in such manner so as to leave a clear space both above and below it for the mechanism. On the platform is a slightly raised, annular surface 11, surrounded at the edge by a single row of visible characters corresponding to the type used, At some place in the row a blank dlVlSlOIl, as at 12, is interposed, the same being the starting point. Mounted concentric wlthin the annular ring containing the row of slgnificant characters are three circular plates of insulating material having notched metallic risks 15, 16 and 17 insulated from each other by the plates 14:, 15 and 19, the entire structure forming a segmental commutator. The number of teeth 1n the upper and lower metallic disks 15 and 17 of this commutator correspond with the number of divisions in the character row while the center disk 16 of the commutator is provided with twice the number. The teeth on the upper and lower disks are formed with a reentrant angle or hookshaped face, those of the center disk being radial. Mounted centrally on the commutator so as to be insulated therefrom is a lever 21 or the so called sending key, having at one end a pointer 22 and provided at the other with a knob or handle 23 for convenience in operating as a key. Attached to the lever is a brush 24: having three metallic contactors 25, 26 and 27 respectively adapted to engage with the several disks 15, 16 and 17, the arrangement being that the central contactor 26 is always in engagement with the middle disk 16, thereby keeping the system energized and the other contactors 25 and 27 alternately engage with the lower and upper disks respectively.

The electrical construction from the transmitter to the receiver is similar to a threewire lighting system, where the neutral is in connection with the central disk forming one line of circuit which is a common lead for both receiving magnets and contains the energizing batteries in its circuit; the other two wires of this three-wire system are connected respectively to the two receiving electromagnets. As the selecting key is turned it will alternately energize and deenergize these two circuits by means of making and breaking the circuit caused by the arrangement of the teeth in the upper and lower disks. It may be noticed that when the pointer 22 is on the blank 12, the contactors 25 and 27 are in a blank space 13 formed in the upper and lower disks of the commutator by the admission of a single tooth in each, thereby cutting the battery out of circuit.

The foregoing description applies to that portion of the instrument which may be considered as the transmitter. The receiver consists of a similar platform 30, mounted upon supports '31 at the corners; upon this platform are two standards 32 carrying at their upper ends cross -arms33, -wliich extend uniformly on each side and are connected together by rigidly secured stay rods" 34. Horizontally between the rods 34 are two pairs of magnets35 and 86 also secured to the cross arms 33 in such manner that each pair faces the other, having between them a double acting armature with , poles 37 ,and 38, rigidly held in proper relation bytheiconnection :39. The-armature is supported and. guided by means of the rods :34: which pass through openings in the endportion of the. pole members. ,Standards il and 42 rise from the platform 80 provided with suitable bearings for carrying the shaft .45 atflright angles to, and central with themagnets 35 and 36. On the outer end ofthis shaft is secured a type wheel 48 havingon its periphery type characters corresponding in number and relative position j kthe ha a er seas d .Q t e su ac ;,ii 1d n th ab n 2- O t pp, site end of the shaft is mounted a ratchet wheel 50, positioned partly within an opening formed in the plate 52 which 1S I1g1dly attached to @the armature connection 39. E ten in nt e e ng are Q pp sitely.disposed detents 53 and 54: lntegrally formed and adapted to engage w1th the ratchet teeth. The plate 52 also carries two pivoted pawls 55 and 56, constra1-ned by thesprings 57 to press aga nst the ratchet, which is madeof an appropriate thickness to extend through and permit of this. XVhen either pair of magnets, as 36, are energized,

the effect is,to attract the armature pole thereby causingthe plate 52(301'110V8I'6Ct1l1- nearlyin that direction, the pawl 55 engaging with the ratchet and 1mpart1ngrotary motionto it, which wlllbe 1n synchronism withv the rotary motion of the sending transmitter. The detent 53 contacts and prevents further, action or .lost motion, and at theend of the stroke the armature will have completed its movement and the type wheel revolved a'space. Thus it w ll be seen that when proper electrical connections have been (made it is possible to move and synchronize the type wheel by moving the pointer 22 with respect tolany desired character, the magnets being alternately energized bythe passageof the brush contactors around the teeth of ,the commutator.

A paper strip for receiving the type impression isco iled uponthe spool.60 suitably supported :by uprights on the platform 30, insuch manner that the free end passes below thetype wheel 48 against which it may be pressed by the pad 61 on the end of the lever62, .fulcrumed at 63, and carrying ,an armature 65 arranged with reference tothe magnets 66, supported from the s platform p ss gpv th p d 61, he strip is kept from contact with the type wheel by means of the pins 77 set in the plate 78 attached to the upright "42. Near the opposite or frontend of the lever 62 is a loop '67 throughwhich the strip passes to the slotted paper finger 68, the same being set in the 'end'of the lever at a definite angle so arranged that when the lever is depressed,

the strip is moved down, being pushed through a slot in asimilar but fixed finger 7 0, attached to the platform and from which thestrip passes under the loop 71 in a free, unconfined state. I

From the foregoing, itwill be understood thateaeh time the magnets 66 are energized, an mpression is made forced contact with the strip or paper ,tape against the type wheeland also thata certain definite length of paper isfed forward by action of the slotted fin ers, the. downward movement being adjuste by the stop pin 72 when the magnets release thearmature, the lever is returned to its normal position by reason of I the pull spring 73, the strip being held in the fingers 70, the upper, moving fingers 68 allowing it to pass throughon the up stroke. The ,type wheel is supplied with ink from the reservoir 75 attached to the upright 42 and provided with a .distributer 76 for ap plying the ink-uniformly. When it is desired to print upon the-tape, the pointer is brought intoregister with the desired character and the spring lever key 80 depressed until an electrical contact is made which movement also serves to'break contact with the arm 82. This operation, by reason of the electrical connections, energizes the ma g nets and {operates the lever 62 thereby presslng the paper strip against the inked type wheel and also feeding the strip for ward in amount equal to the spacing desired, and at the same time breaks the con nection between the i battery and magnets 35'an'd'36. i wiring diagram is shown in Fig. 19 illustrating the connections of a multiple system arranged in such manner that any transmitter can be used inoperating one or more of the receivers. This includes the use of a three point switch, of any usual construction, the entity being designated by the character A; when this is open, as shown Fig. 1, the current will be trans mitted to other apparatus in the 2 circuit either to sender receive messages, but when the switch is closed, only the receiver. in direct connection with the transmitter is operable by In this latter condition the batterylci'rcuit, represented bythe wire 87, I

connected to the line 87 thereby completing the circuit from the electromagnets 35 and 36 causing the armature of the electromagnets to move reciprocatively. When it is desired to energize the printing electromagnets 66, the key C is depressed causing the battery circuit 87 to pass through the circuits 88 causing the magnets to attract the armature and operating the lever 62. When the switch A is open all the circuits are open, allowing the current to pass through to other apparatus which will be actuated in unison with the first.

To explain the operation: Let it be desired. to print the word free; the pointer is moved from the blank space 12 to register with the character f or six spaces, clockwise of the commutator, which causes each pair of electromagnets to operate three times, thereby turning the type wheel an equivalent amount and bringing the desired character into printing position; the key 0 is then pressed causing an imprint to be made and the paper advanced to receive the next character. The pointer being rotated to register with the character r causes the type wheel to again rotate in unison with it, the key pressed and the pointer further rotated, this time entirely past the blank 12 in order to arrive at e where it is held during two separate operations of the key C imprinting the character twice. Space between words is obtained by the key C when the pointer is on the blank 12.

Having shown and described a working embodiment of the invention and ascertained its use, construction and purpose, what I claim as new and desire to secure by Letters Patent, is:

1. In a mechanism of the character described, the combination with a source of electrical energy, two or more electromagnets spaced opposingly and an armature common to the opposed magnets, of a segmental commutator consisting of three insulated metallic disks in connection with a three-wire circuit, two of which form connections between the disks and electromagnets and the third disk between the energizing source and the common terminal of the said electromagnets.

2. In a mechanism of the character described, the combination with a source of electrical energy, two or more electromagnets in variable circuits therewith and a commutator, said commutator consisting of three metallic disks arranged side by side upon a common center and provided with insulators therebetween, of a brush consisting of three contactors, one for each disk, means for revolving said brush around said commutator and teeth formed upon the periphery of the mentioned commutator disks, the teeth in one of the said disks being so arranged as to maintain one contactor continuously in circuit and the teeth in the other disks so arranged as to be in alternate circuit with the said contactors.

3. In a mechanism of the character described, the combination with a segmental commutator, an alternating three-wire contact maker and a three-wire system, of two receiving electromagnets capable of producing electromagnetic alternate attractions, a ratchet rotatably mounted, an escapement operable therewith and means for transmitting the reciprocating motion produced by mentioned alternate attraction to said cscapement whereby the ratchet may be revolved.

4:. In a machine of the character described, the combination with a commutator consisting of three metallic disks arranged side by side and insulated from each other, of a brush having a contactor for each of said disks, a row of significant characters concentric with said commutator, means for manipulating said brush selectively with reference to the characters, contact points formed on the periphery of the disks, those of the center disk being uniform and in continuous engagement with the corresponding contactor and those of the side disks being in alternate engagement with their respective contactors and means whereby at one point neither of said side disks are in engagement with their contactors.

5. In a strip printing and feeding device, in combination with a type wheel and means of operation thereof, an electric battery, electromagnets and a wire circuit therebetween including a key, of a lever pivoted below said typewheel, a pressure pad adapted to contact therewith, a fixed paper guide at each side of said pad, an armature secured on said lever with respect to said magnet, a slotted finger engageable with a paper strip on the end of said lever whereby the strip is carried down and a fixed slotted finger through which the strip is pushed, said latter finger being arranged to prevent the return of the strip therethrough, a spring for returning said lever to its normal position and an adjustable stop for limiting the lever action as opposed to the attraction of the electromagnet.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

FREDERICK CARL GRASME.

Witnesses:

FRED. Roncnn, WARREN E. WILLIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G."

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