US1155776A - Telegraphone. - Google Patents

Description

H. L'. WASHBURN.

TELEGRAPHONE.

APPLICATION FILED 0CT.3. 1914.

H. L1. wAsHBuRN. TELEGRAPHONE.

APPLICATION FILED 0CT.3. 1914.,

v3 SHEETS-SHEET 2.

Patented Oct. 5, 1915. I

ATTORNEYS H. L. WASHBURN.

TELEGRAPHONE.

APPLICATION FILED ocT.3.1914.

1,155,776. Patented oet. 5,1915.

3 SHEETS-SHEET 3.

ATTORNEY` HOWARD L. WASHBURN, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO AMERICAN TELEGRAPHONE COMPANY, OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION 0F THE DISTRICT OF COLUMBIA.

TELEGRAPHONE.

To all whom-fit may concern.'

Be it known that I, HOWARD L. BURN, a citizen of the United States of lAmerica, residing in Springfield, in the county of Hampden and State of Massachusetts, have invented certain new and useful lImprovements in Telegraphones, of which the following is a specification.

This invention relates toimprovements in magnet, is locally magnetized in varying de`-. grees corresponding to the current 1mpressed upon the electro-magnet. The Wire may ,then be passed between the poles of the electro-magnet in'a reverse direction to rewind the reel. It is thus necessary to provide means to drive one drum while the other is running looseA upon its spindle and to be able to drive the second drum in a reverse direction While the first drum runs idle. This invention is more directly concerned with .an electro-mechanical structure to accomplislfthe functions above described.

In general, I employ a pair of Wire-carry ing reels loosely mounted upon a pair of vertical shafts. The reels-are adapted to -engage friction clutch elements fixed to pulleys, the latter being connected by crossed belts. One of the pulleysis directly driven b v a motor and the other pulley through the crossed belt connection described. I, furthermore, provide means to lift either reel desired from the clutch element, the arrangement being such that one pulley is positively driven While the other runsloosely upon its spindle.

An object ofthe invention is to provide simple, eficient, and positively acting means to liftl alternately the reels from elements.' Y

Another Objectis to provide an arrangeluent, as described, which iseconomical in the use of power.v v

Another object isv to provide an electro- Specfcation of Letters Patent.

IVAsuas generally con-- I isillustrated in the driving Patented oct. 5, 1915'.

Application filed October 3, 1914. Serial N o. 864,778.

mechanical structure for alternately lifting the reels from the driving elements, Which is 4 suitable for use with lalternating current as well as with direct current.

A furtherobject is to provide an electromechanical structure Avvhereby, when the Inachine is stopped, eitherpurposely or by failure of the power supply, both reels Will be brought into contact with the friction clutch element. Thus, this arrangement .provides a braking action oneach of the reels and quickly stops the rotation. thereof. It is, therefore, impossible for the finewire, upon vthe reels to -be spun out in a tangled pile upon the floor. .v Another object is lto provide an electromechanical lifting mechanism, as described, which is suitable for operation with alter- Dating current with a minimum of noise.

I am aware .that electro-mechanical structures have been heretofore used to lift the Wire carrying reels from'their driving elements. Such structures, however, have been used only with direct current.

They usu- A lally comprise a direct current magnet which operates to lift and maintain lifted one of the reels. Such an arrangement is not economical since lin the operation of the machine one or the other of these magnets is continuously energized. Furthermore, when the structure above outlined is supplied with alternating current, the continuous operation of one or .the other of the magnets results in a very objectionable noise, the so-4 called inductive hum. I particularly seek to avoid the continuous operation of these magnets on Vaccount of the objectionable noise and the Waste ofl power. I-I provide for the intermittent action of the electromagnets to lift the reels and mechanicall means to thereafter hold them in a lifted position. Thus, the magnets are energized only fora-11 instant thereby reducingv the 1nductive noise to a minimum. i .v

A preferred embodiment of my invention the accompanying drawings in Which- Figure 1 isa sectionalelevation of-al telegraphone structure taken longitudinally through t'h'e machine. Fig. 2'is a transverse sectional elevation vtaken on the line 2 2 of Fig. 1 `and looking inthe direction of the arrows; Fig. 3 'is a'sectional elevation taken on the line 3-3 of lFig. 1, and looking in the direction of the arrows. Fig. 4 is an end elevational view. Fig. 5 is a wiring diagram showing the electrical coniiections between the various elements of- .structure proper has been omitted for the sake of clearness and because it forms no part of my invention. -Unly enough of this structure has been ,shown to properly connect it with my invention. l

Referring particularly to Figs. 1 and 2, the main frame of the machine is everywhere designated as A and comprises the usual base-plate, upper and intermediate frames, posts, and inclosing casing.

Fixedly secured to the frame A is a motor 10adapted to be supplied with power from an alternating current source. of the motor, vertically disposed, is hollow and ixedly connected to a pulley 7 by a key 8. The pulley 7 bears upon its upper face a friction element 7 of any suitable material. Loosely and rotatably mounted upon i ber 3 from a vertically upstanding extension of the pulley 7 is a reel driving member 3 having fianges 3 adapted to engage the friction element The reel-driving member 3 is adapted to receive a reel 1 which closely its the driving member 3. Projecting downwardly from the under side of the reel 1 are 'lugs l" adapted to be engaged by upstanding screws 4, the latter being adjustably secured in the reel driving member 3. lSlidably mounted wnmn the hollow shaft 8 is a rod 9, the .upper end thereof being arranged to bear against the reel driving membelow whereby the latter may be elevated, when the rod 9 is elevated. The lower end of the rod lies upon a fiber washer Within a recess in` a set-screw 16,'th'e latter being adjustably secured in a lever 15. One end of lever 15 is pivotally supported at 23 in a depending member of the frame A. The other end ofthe lever 15 is adapted to be lifted, by means to be described whereby the rod 9 may be elevated, to lift `the reel driving member 3 and the hanged portion 3 from the engagement with the friction element 7. The upper end of the rod 9 engages a -screw plug 9 whichhis connected to the driving member 3, A

The second reel 2, arranged symmetrically to and in the same plane with the reel 1, is mounted on a reel-driving member 5, the latter being iixedly secured to a vertically disposed rod 12. The member 5 drives the reel 2 through the screws 6 and depending lugs 2 in a manner similar to that in which the reel 1 is driven. The member 5 is also provided with a friction element 13 fixedly most of the telegraphone secured to the upper face of a pulley 13. The latter is loosely mountedon and supported by an upstanding cylindrical extension of the frame member A?. The pulleys 7 and 13 are connected together by'a crossed belt 11. 'lhe vertical rod 12 is supported in a recess in a set-screw 18 which is adjustably mounted in a lever 17. The lever 17 is pivotally mounted in a manner similar to that in which the lever 15 is mounted.

Rotatably mounted in the vertical side plates A and A3 is a shaft 14 arranged near the bottom of the machine. This shaft 1L is adapted to support the pivoted levers 15 and 17, the shaft being recessed for this pur pose, as clearly shown in Figs. 1 and 2. Figs. 6 and 7 clearly show how the levers 15 and 17 respectively, are supported in these recessed portions. rllhe lever 15 rests upon a flat horizontal surface 22 which extends half-way across the shaft 14. A surface 21 inclined to the surface 22 provides a clearance space so that a slight counterclockwise movement (as seen in Fig. 6) of the shaft 14 Will not elevate the lever 15. Similarly the lever 17 is supported on a horizontal surface 19, and an inclined surface 2O is provided for clearance. This surface 20 allows the shaft 14 to rock slightly in a clockwise direction without elevating the lever 17. It is to be noted that a vertical clockwise rotation of the shaft 14 will lift the lever 15 without disturbing the lever 17, and' a partial counter-clockwise rotation will lift thelever 17 without disturbing the lever 15. Intermediate the levers 15 and 17 and fixedly secured to the shaft 14 is a block 24 of suitable insulating material. Located in the path of rotation of the block 24 are a pair of spring contact fingers 25 and 26 which are suitably mounted on and from a supporting bracket integral with or attached-to the frame A. rlhese fingers are adapted to contact with each other whenever the shaft 14 is rocked in either direction and thereby close an electrical circuit for a purpose to be later described.

Referring to Fig. 4, the shaft 14,'extends through the end plate A of the machine and fixed to this extended portion is a segmental pinion 45. Pivotally mounted on the exterior of plate A at 43 .and in mesh with the segmental pinion 45, is a segmental gear 44. On either side of the latter connected to the end plate A at 42 and 51, are bipolar magnets I54 and 50, respectively. The armatures of the magnets 54 andy 50 are indicated at 55 and 52, respectively,l and fixed to the latter are depending forked arms 56 and 53, respectively. rlhe extremities of the forked arms 56 and 53 are connected by links 58 and 47, respectively, to a pin 46 fixed to and extending outwardly from the segmental gear 44. The arm 56 is, furtherand pivotally pulley 13. As the shaft 14 is rocked, the lever 31 (see Fig. 3) is moved, as prevlously described, so that the notch 33 is brought into engagement with the wedge-shaped pin 34. This action maintains the shaft 14 in the position to which it was moved by the momentary application of alternating current to the magnet 50. Thus, the energization of this magnet is no longer necessary and is undesirable as has been pointed out on account of the waste of power and the disagreeable inductive noise. Simultaneously, as the lever 17 is lifted, the block 24 turns and forces the contact fingers 25 and 26 together, thereby connecting the motor 10 to the power source, as clearly shown in Figs. 2 and 5. The motor 10 drives the shaft 8, pulley 7, and since -the reel driving drum- 3 is in contact with the friction element 7', the reel 1.

When it is necessary to stop the machine,

the operator pushes the button 71 which closes, as will be seen from Fig. 5, a circuit lthrough the trip magnet 27 froln the battery (5S). The energization of this magnet causes the armature 3,0 thereof and the attached rod 28 to be attracted wherebyithe lever 31 drops away from the wedge-shaped pin 34. The weight of the rods 9 and 12, levers 15 and 17, and attached parts, is then sufficient to turn the shaft 14 to the normal position shown in the drawings. The motor 10 is automatically stopped by the separation of the contact fingers 25 and 26 as the block 24 assumes the position shown in Fig. 2.

lf, for any reason, the alternating current supply fails-or4 the voltage thereof drops below its normal value, the magnet 66 will no longer be energized sufiiciently to keep the finger 67' away from the finger 68. When these ltwo lingers close, the action is exactly the same as that obtained by operating the push button 71. The trip magnet 27 is energized from the battery 69, which, as has been previously described, stops the motor and brings the parts back to normal position.

i To operate the apparatus in a reverse manner to that already described. the button'72 is actuated. This actuates the relay magnet 62 and closes contacts 64 and 64 whereby the magnet 54 is momentarily ener,- gized from the Valternati-ng current source. This action causes the shaft 14 to be rocked in a clockwise direction and causes the notch v32 in the lever 31 to engage the wedgeshaped pin 34. The lever 15 is actuated by the shaft 14 thereby releasing the reel-driving member 3 and attached reel from the friction element 7. Thus, the reel 1 is allowed to run loosely. The reel 2, however,

since the member 5 is in contact with the friction element 13 is positively .driven from the pulleys 13 and7 and the crossed belt connection 11. Thus, the wire upon reel 1 1s unwound therefrom and rewound upon the reel Thus, I have provided novel operating mechanism for telegraphone reels. Moreover, I have provided economical and efficient means for operating these of my invention which ismore truly de fined inthe appended claims.

l/Vhat I claim is- 1.l In a telegraphone, the combination with a pair of record carrying reels, a shaft depending from each reel, a rock shaft, connecting `devices between the depending shafts and the rock-shaft, and means for rocking the samefor elevating either one or the other of said reels for rendering that reel free to revolve, as described.

2. In a telegraphone, the combination with the record-receiving reels, a driving mechanism means for rendering either one of said reels operative for Winding purposes or inoperative for unwinding purposes, said means comprising a rock shaft having two cam surfaces formed thereon, clutches, a clutch lever for each reel, each lever having a pivotal connection at one end and its other 4 end located on one of said cam surfaces, said surfaces being arranged sol that elther one of sald levers resting on the cam surfaces may be operated without operating the other le' ver, whereby said levers may be alternately raised as said shaft is rocked in opposite directions, means engaging the free ends of each of the levers and having a connection with the reels for operating the clutches as described, means for operating the rock shaft, and means for retaining the rock shaft in a rocked position to unclutch one of the reels vfrom the driving mechanism and all low it to rotate freely.

3. In a telegraphone construction, the combination, a rock-shaftv formed with channels therein each having surfaces inclined to each other, a lever located in each of said channels,.and engaging one of said surfaces, a reel operatively connected toeach link construction, whereby when one of said magnets is energized, the shaft will `be rocked in one direction and, when the other of said magnets is energized, the shaft will be rocked in the opposite direction, and

maarre'.

one end of av link 59, the other end beingpivotally connected to a pin 60 secured in the plate A. Similarly, a link 48 connects .the pivot 49 of the arm 53 and the pin 61 which is fixed to the plate A. It will thus be seen that the magnets and 54 are operably connected by toggle mechanism to the segmental gear 44. When the armature 52 is attracted, the shaft 14 will be rocked in a clockwise direction to lift the lever l5. When the arma-l ture is attracted, the shaft 14 will be rocked in a counter-clockwise direction vto lift the lever 17.

Referring more particularly tol Fig. 3, a pin 39 fixed to the segmental gear 44 extends rearwardly therefrom through the end plate A and is pivotally connected to one end of a link 36. The other extremity of the link 36 is connected by a pin 38 to a vertically arranged lever 35. The latter is pivotally mounted at its lower end on a pin 37 which lis fixed to the end plateA, and the upper end is connected by a pin 40 to a horizontally disposed offset lever 31 which is .provided withI notches 32 and 33. Immediately above the lever 31 is a wedgeLshaped pin 34 fixed at its end in plate A and adapted to engage either of the notches 32 and 33. Fixed to the plate A and below the lever 31 is a bipolar magnet 27. Intermediate the coils of the magnet 27 is a vertical rod 28 slidably mounted in the angle irons 4 1 and 7 5. Fixed to the rod 28 is an armature 30 and upon the rod 28, between the armature 30 and the angle iron 75, is a spring 29, the latter adapted to force the rod 28 and the lever 31 against the wedge-shaped pin 34. A guide 41 restrain's the lever 31 from sidewise movement and maintains it always upon the top of the rod 28.4 When the shaftl 14` is rocked clockwise bythe magnet 54, the segmental gear moves by means of the pin 39, link 36, and lever 35, the lever 31 to the left, as seen in Fig. 3 until the notch 32 is forced into engagement with the wedgeshaped pin 34 by the spring 29. Similarly, a counter-clockwise rocking of the shaft 14 brings the notch 33 into engagement with the wedge-shaped' pin 34.

Fig. 5 illustrates the electrical connections of my improved structure. The wires 80 and 81 are connected toa source of alternating current. Connected to this supply bythe wires 82 and 83 is 'th` motor 10 and interposed in the wire 83 are the contact fingers 25 and 26, previously described. A wire 84 connects one terminal of each of the operating magnets 50 and 54 with one wire (81)- of the alternating current supply, The wire 80 connected to the other terminal of the alternating current source is connected to contacts 64 and 65. Arranged between these contacts 64 and 65 is a pivotfed contact armature 63 adapted to engage either one ofthe contacts 64 and 65. ,Arranged on opposite sides of the armature 63 and below the contacts 64 and 65 are contacts 64 and 65 which are connected by wires v85 and 86, respec tively, to the operating magnets 54 and 50, respectively. Arranged on opposite sides of the contact armature 63 are relay magnets 62 and 87 which are adapted, when energized to move the armature 63 into contact with the contacts 64, 64"and 65, 65, respectively. One terminal of each of the relay magnets 62 and 87 is connected at 88 to a wire 89 leading to oneterminal of a'battery 69 or other direct current supply. The other terminals of the relay magnets 62 and 87 are connected by wires 91 and 90, respectively, to one terminal of the push buttons 72 and 70, respectively. The other terminals of these push buttons are connected to a common wire 92 which leads to the battery 69. rlhe wire 89 also connects with one terminal of the trip magnet 27, the other terminal thereof being connected by a wire 93 to one terminal of a push button 71. The other terminal of the push button 71 is connected to the wire 92 and thence to the battery 69. Connected to the terminals of the motor 10 are wires 94 and 95 which lead and are connected to a .magnet 66. rllhe armature 67 is eccentrically mounted and bears a contact finger 67. The armature 67 is, 95 furthermore, electrically connected by a wire 96 to the common battery wire 92. Arranged above and in the path of the contact finger 67 is another contact finger 68 connected b v a wire 97 to the wire 93 and thus to the trip 100 magnet 27. The magnet 66 is provided with a winding which, when energized by a current of the normal voltage of the supply source, is justv powerful enough and hold the-finger 67 in the position shown in Fig. 5. 105 rlhis structure, l terni, a low voltage release. The operation of my device will now be described. The drawings including the wiring diagram show the parts in neutral position and at rest. Assumethat the reel 2 110 is Wound with the fine magnetic telegraphone wire and that it is desired to unwind it from the reel 2, draw it through the usual telegraphone devices, and wind it upon the reel 1.v rllhe operator presses the push but- 115 ton 70, thereby energizing the relay magnet 87 from the battery 69. The magnety 87 attracts the armature 63 which closes the contacts 65 and 65 and allows alternatingrd current from the Wires 8,0 and 81 to flow '120 leased from driving engagement withl the 13.0

50 f therefrom for inoving either for locking the same 1n its rocked position,

.the toggle link one of said magnets is energized, the shaft l 1s moved, one of said pin to lock said link and means for locking sition.

i. In a telegraphone construction, the combination, a rock shaft formed with channels therein each having a horizontal and an inclined surface, a lever located in each of said channels, ed to each of said levers for winding and unwinding purposes, two electro-magnets for operating the rock shaft in opposite directions, a pinion on said shaft, a gear engaging the pinion, a toggle link construction connected to the of the two electro-magnets and connected to construction, whereby when the shaft in its rocked powill be rocked in one direction and, when the other of said magnets is energized, the shaft will be rocked in the opposite direction, and means for locking the shaft in its rocked position, said means comprising a pin, a link having spaced. notches therein arranged to move thereunder, means operable by the .movement of said rock shaft tovmove said link, a device for normally forcing said link against said pin, whereby, when said link said notches will engage I said rock shaft 1n their rocked position, an, electro-magnet, and an armature therefor arranged when attracted to retract said device, whereby said link may drop away from said pin and said rock shaft may be returned to its normal pos1t1on.

5. In a telegraphone, the combination, a rock-shaft, means for moving the same in opposite directions, said means comprising toggle-hnks connected to the shaft, electromagnets connected to the links for alternately moving the links, a pair of reels, and

operative connections between the reels andsaid shaft for moving the reels to either a winding or take-up position, as described.

6. In combination with take-up reels of a telegraphone, a pair of driving pulleys for the reels, a friction device between each of the pulleys and the reels, a rod passing loosely through each of the driving pulleys and engaging one of said reels, a rock-shaft, means operable one of the rods for connecting and disconnecting the reels with said friction devices whereby either reel may be operated for take-up purposes, an velectro-mechanical means for operating the rock-shaft, means a reel operatively connect-l shaft, comprising ear an armature for eachI g 7 the Winding and winding or for and means'for releasing the same from its locked position.

7. In a telegraphone, the combination with the reels thereof, an, electric motor for driving the reels, a rock-shaft, a circuit-closing device operated by the shaft to start and stop the motor, means for operating the a source of electric energy, two -electro-magnets electrically connected: to the source of energy, armatures therefor, connecting devices from the armatures to rock the shaft in opposite directions depending upon Which electro-magnetis energized, a relay to close .the circuit from the source of electric energy to either one of said electro-magnets, means for locking y' the shaft in its rocked position, chanical means for unlocking the shaft, and means for opening thecircuit to should the current cease or fall below a definite value, as described.

8. In a telegraphone, the combination with the reels thereof, driving means for operating said reels, clutchV devices between the driving means and the reels, means for rendering the clutch devices either operative or inoperative and comprising a shaft, means operable from said shaft for connecting and disconnecting pending upon which reel is to serve as the winding or take-up reel and vice-versa, means for locking the shaft in a iixed position duringpthe winding or unwinding operation, andV means for unlocking the same at the end of said. winding or unwindlng operation.

9. v The combination, lin a telegraphone, of rotatably mounted reels, a driving pulley for each reel, means for elevating each reel for disconnecting the 'same from its drivmg pulley, said means comprlsing a rock-shaft,

HOWARD Witnesses:

HARRY W. BOWERS,

H. E. HARTWELL.

L.- WASHBRN.

electro-me v v the motor,

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