US1556831A - Electric controlling means - Google Patents

Description

Oct. 13,1925- 1,556,831

C. W. WYMAN ELECTRIC CCNTROLLING MEANS Filed Nov. 25. 1921 5 Sheets-Sheet l C W WYMAN BLSCTRIC CONTROLLING MEANS Filed Nov. 25. 1921 3 Sheets-Shoot 2 MME/mf .E .H n. V n@ P c. e O 9 0 Auv \|\W\ e i W QCA@ m a @n @YQ NM1 1T iwi# W Q E m a Q a! l u L. .w .www Vu Q u u H 0a. 13,1925. 1.556,831 C. W. WYMAN K ELECTRIC CONTROLLING MEANS Filed Nov. 25. 1921 SSheets-Shaet 5 ign. 130g. 6.

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l H2M l l f y////// 03' Yy les I if v Patented Oct. 13, 1925.

UNITED STATES PATENT OFFICE.

CHARLES W. WYMAN, 0F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

ELECTRIC CONTBOLLING MEANS.

Application tiled November 23, 1921.

To all whom t may concern.'

Be it known that I, CHARLES W. VVYMAN, a citizen of the United States, residing at Claremont, in the county or' Sullivan and State of New Hampshire, have invented certain new and useful Improvements in Electric Controlling Means, ot' which the following is a full, clear, and exact specilication.

My invention relates to electric controlling means, and more particularly to controlling means for use in connection with mining machines.

An object of my invention is to provide an improved controlling mechanism. Another object of my invention is to provide an improved interlocking controlling mecha nism. A further object of my invention is to provide an improved controlling mechanism permittiner the operation of the motor controlled thereby in opposite directions while preventing the reversal of said motor except after the parts of the controlling mechanism have been returned to a predetermined posi'- tion and a controlling member thereoitl has been manipulated in a predetermined manner. A still further object ot my invention is to provide an improved controlling mechanism provided with improved means for preventing the movement ot' the con troller handle in a direction to ett'ect opera tion of the motor in a direction not desired. A still further object ot' my invention is to provide improved manually controllable controlling mechanism for an electric motor comprising simultaneously controllable reversing and resistance controlling means and means tor preventing the operation of said means in other than the desired manner. A still further object ot my invention is to provide improved means for controlling a mining machine motor having an interlock with the current supply or connector plug whereby the latter cannot be inscrteed or withdrawn except with the controller locked in off position.

In the accompanying drawings I have shown for purposes of illustration one torni which my invention may assume in practice, together with two illustrations ot possible adaptations thereof.

Serial No. 517,621.

In these drawings,

Fig. l is a plan View with parts broken away ot a mining machine of the well known longwall type provided with the illustrative form ot my improved controlling system.

Fig. 2 is a plan view of a portion of the machine shown in F 1 with parts broken away and on an enlarged scale.

Fig. 3 is a detail ot' the connector interlock.

Fig. 4 is a side elevation with parts removed of the improved controller mechanism in its illustrative form and also showing certain ot the control elements in elevation or in dotted lines. V

Figs. 5 and 6 are respectively views in vertical transverse section on the lines 5 5 and 6 6 of Fig. 4.

Figs. 7 and 8 are wiring diagrams for D. C. and A. C. motors.

Fig. 9 is a detail section on the line 9-9 o1 Fig. 5.

In the illustrative torni ot' my invention I have shown the same adapted for use with a D. C. motor, but it will be understood that with a simple chang-e in the wiring connections as illustrated in Fig. 8 and a variation in the number, relative position, and dimensions ot the controller arms, this mechanism may be equally well applied to alternating current motors.

In the illustrative embodiment thereof my improved controlling mechanism is arranged upon a mining machine having a main trame 1 in which there is mounted a motor 2 (shown in dotted lines in Fig. l) adapted to drive a cutter chain 3 on a cutter bar 4 and likewise adapted in a well known manner to ellect feeding movement ot the machine by means ot sprockets 5, 6, T and 8 and a suitable flexible feeding inember. My improved controlling mechanism, which is generally designated 9, is enclosed in a compartnient 10 arranged at the operators end ot the machine and at one side thereof. This mechanism comprises a drum type controller member, generally designated 11, a series ot' stationary contacts generally designated l2 cooperating therewith, sets ot' contacts generally designated 13 and 14 carried by the controller l1 and operative respectively during forward and reverse running of the motor, means generally designated 15 for controlling the direction ofrotation of the drum type controller 11, and means generally designated 16 for controlling the insertion and removal of a connector plug 17.

As the reverse segments and the resistance control segments are similar in arrangement, but disposed relatively o posite to each other on the controller mein er, it will sutiice to describe one set of these members. In Fig. 2 the movable contacts used in reverse running alone are shown. Sup orted upon suitable clamping members 20 a apted to be secured to a controller shaft 21 aie a series of arcuate control members respectively designated 22, 23, 24, 25, 26 and 27, the tirst of which is of such length as, after making contact, to remain in constant contact with the stationary contact member with which it cooperates throughout the entire remaining turning movement in onedirection of the shaftl 21 from its mid-position, While the contacts 23, 24, 25, 26 and 27 are set in spiral relation and progressively contact with and pass beyond the cooperating stationary contacts, the members 22 to 27 being connected in series with each other. Located next to the member 27 and mounted similarly upon the shaft 21 are a series of herein, five reverse contact segments, each of these being in length equal substantially to the member 22 and so disposed as to make contact with their respectively cooperating stationary contacts simultaneously with the contacting of the member 22 with its stationary cooperating contact. These reverse members are designated, respectively, 28, 29, 30, 31 and and are connected as shown in the Wiring diagram of Fig. 7. It will be noted that each of the several members 22 to 32 is insulated from the shaft 21 by means of insulating material as is shown at 33. Pivotally mounted upon clamping members 34 secured to a stationary bar 35 but insulated therefrom by insulation 36, are a series of stationary contacts 37 to 47, each of which is resiliently held in its extreme position toward the drum controller by a spring 48 and limited as to its movement in that direction by a stud and nut 49. Flexible connectors 5() lead from these stationary contacts to connector means 51 to which the various connections to the resistance, etc. are made. Suitable insulated partition members indicated at are supported by a rod 53 in such manner as to space the various members 22 to 32 and 37 to 47. Adjacent the operators end of the shaft 21 is provided a disc-like member 54 having a flange 55 provided thereon and suitably serrated as indicated at 56 to cooperate with a spring actuated bell crank 57 to releasably lock the controller shaft in various positions. The bell crank 57 is held as to its upper end which is provided with a roller 58 in engagement with the flange 55 by means of a spring 59. The disc or collar member 54 is provided between the opposite series of notches 45 with li pair of projecting abutment mein rs having faces disposed in opposite directions, but, longitudinally staggered relative to the member 54 so that only parte of their adjacent t'aces are actually opposite each other. These abutment members which are designated, respectively, 61 and 62 may be best ,:hserved in Figs. 2, 5 and 9 and it will be obvious from these facts that by reason gi the staggered relation of the members` 61 and 62 it is possible for a rcooperating locking finger 63 to be moved to such posititllli` with respect to these abutment members as to permit rotation of the shaft 21 in eith ,r

direction while preventing rotation in e other, or to such position as to preyent rotation of the shaft 21 in both directions e K t'ii-elv. The finger 63 is carried upona Sha t 61 which is slidably mounted near the ende of the members 61 and 62 in a suitable bearing 65. At its opposite end the shaft 64 is is-@vided with a rack carrying member 66 wth which there meshes apinion 67 mount- ;-d upon the lower end ofa vertically 'gposed manually controlled shaft 68. e latter is provided with arthumb nut 69 and, is movable to change the position of the matt 64 to* provide for forward or reverse running rotation of the drum operating` shaft 21. v

An indicator plate 70 surrounds the u per end of the shaft. 68 and is adjustably xed by slotted connections and screws 71 to the top of the machine frame and is likewise provided with stops 72 and 73 for limiting the movement of the thumb nut in such man. ner as to provide for the roper positioning of the shaft 68 and so ot) the finger 63 for forward or reverse runnin second shaft 74 provided with a pinion "i interineshing with the pinion 67 coo r- :ztes by means of a flattened portion 76 with a spring 77 and a lockin plunger 78 carried by the spring to interlock with a socket 79 in the connector plug 17, and to release the connector plug when the parts are in the position shown in Fig. 2, that is with the loi-king inger 63 in position to prevent'rotation of the shaft 2l in either direction. It will be noted that as the thumb nut 69 is turned in opposite directions, the shaft 711 will lil-ewise be turned and the member 77 so moved as to foi-ce the projection 78 into the socket 79 and so prevent withdrawal of the plug except when the controller is not onliv in ott' position, but locked in ofi' position.

The wiring diagrams shown in Fig. 7 will ineke it readily apparent how the mechanism so tar described is connected. The stationian,

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ary contacts 37 to 47 will be noted in the center, with the main line wires connected to the buttons or contacts 37 and 47. The resistance will be noted to lie between tlhe buttons 38 and 42 with suitable connections between various points in the resistance and the several buttons. The button 43 will be noted to connect to one end of the series lield, the button 44 to one of the brushes, the button 45 to the other of the brushes; thc button 46 is connected to one end of the shunt tield, whose other end is connected to the button 38, the shunt kick coil shunts the buttons 38 and 46. The forward contacts 22 to will be noted at the lower side of the figure, it being noted that the contacts 22 to are connected in series, that the contacts 28 and 29 are connected together, and that the contacts 30, 3l and 32 are connected. The oppositely moving or reverse running resistance controlling contacts 22 to 27 will be noted to be connected similarly to the first ones. The contacts 28 and 30 are connected together and the contacts 29, 31 and 32, are connected together. The effects of moving the shaft 2l in opposite directions are so obvious from the diagram that it is believed that to increase the length of the speciiication by a detailed description of the various events as the arts are turned is unnecessary.

In Fig. 8 t e wiring diagram for a threephase A. C. motor is shown. Here again there are eleven stationary buttons, or contacts, 37 to 47. Instead, however, of having two series of movable contacts carried by the shaft 2l, there are four series, two for forward running and two for reverse, these series being so arranged that the iii-st series coming into engagement with the stationary buttons upon rotation of the shaft 2l will connect the windings of the motor in star, while a continued movement bringing thc second series of movable contacts into operation will result in the connection of the windings in delta. It is believed that this description will be sufficient to render the operation of the device as modified for controlling an A. (l. motor obvious.

Before taking up the mode of operation of the parts of the controller and its interlock, it should be noted that t-he member 54 is secured by a set screw 81 to the end of the shaft 2l and is provided at its opposite end with a polygonal socket 82 with which a short operating shaft 83 interloc-ks, the latter being provided at its opposite end with an operating wheel 84. Now assume that the parts are all in the position indicated in Fig. 2 of the drawings. It will be evident that the rack 66 is in such position as to bring the locking finger opposite the longitudinal center of the member 54 and so as to be en- ;.aged by the adjacent ends of the members ol and (52 if rotation of the shaft 2l is attempted. It will accordingly be evident that the controller is positively locked in mid-position. It will also be noted that by reason of the relation between the pinions 67 and the sha 't 74 is in such position as to `bring the flattened portion To thereot jacent the spring member 77 and to per; i the latter, accordii` tlg', to withdraw the lockir pin 78,:1o that the conne" plug .may be withdrawn. il t? e the .1i ated in either ui controller thereby, iii the shaft o8 to be turned in to more the member o3 longi t free the meting/ter .-l- 'tor rotaticui in rection. -i unie t t the thumb nut. bt) is turnel in a cloelrw direction. i. c. toward the legend LForwa on the ring TU. rIltis will cause the member bij to more tov."- rd the left in Fig'. L* and will free tht 'f tali' rotation in a clockwise direc o` referring to Figs. 4 and while prevent ng rotation thereof in the opposite direction. It. will thereupon be possible by turning the hand wheel 84 to cause the drum operating shaft 2l to rotate and to connect the motor for forward running and g l allv eut out the resistance from 'the circuit.. it will be noted that the turninn of 'the shaft 68 has turned tlhe shaft T4 ano the pin 78 has been locked in place. It' the plug i7 happened to be out at the time that the shaft G8 was turned, it will be impossible to replace it until all vthe parts had been moved bach to initial position, or, if in, it could not be removed. lt will also be apparent that the plug 'i7 must be shoved all the way home or else entirely removed, for otherwise the shaft 74 cannot be turned. This prevents movement of shaft o8 except when thc plug is either fully in, or altogether out. lt will be apparent that the shaft- 68 cannot be turned to reverse the position of the locking linger until after the member 54 has been returned to mid-position, as the rim of the member would interfere with longitudinal movement of the member 63. Upon reverse move-.nient of the shaft 68, it will be evident that the shaft 2l can be rotated in the opposite direction to that first described, but cannot be oppositely operated. From the foregoing description it will be clearly apparent that both the controller and the connector plug are under control of a locking means which. when it releases the plug. locks the controller and vice versa.

lVhile I have in this application specilicall)Y described one form which my invention ma)Y assume in practice, it: will be understood that this form o" 'the same is shown for purposes of illustration and that tlhe invention may be mcdilied and embodied in other forms oit the same without departing from its spirit or the scope of the appended claims.

that I claim as new and desire to secure by Letters Patent is:

l. In an electric controlling mechanism,

il can be ro-v a controller member movable in opposite directions from a given position to produce different circuits, and means including movable means comprising only a single rectilincarly movable element for selectively controlling the direction in which said member may be nio-ved.

2. In an electric controlling mechanism,

-a controller member movable in opposite` directions from a given position to produce different circuits, and means including a lnember having a plurality of oli'set controlling surfaces movable with said controller member and an abutment member for controlling the direction in which said controllirgmember may be` moved.

3. In an electric controlling mechanism, a controller member movable in opposite directions from a given position to produce different circuits, and means including members one of which is movable with said controller member for holding the latter in said given position or freeing the same for movements in said opposite directions, said means while permittingl movement in one direction preventing,r movement in the opposite direction, one of said members presenting oppositely dis osed overlapping abutment surfaces and t e other an abut ment portion adapted to cooperate vwith said surfaces.

4. In an electric controlling mechanism. a controller member movable in opposite directions from a given position to produce diierent circuits, and means including a member movable with said controller member and an abutment member rectilinear-ly movable longitudinally of said controller member for controlling the direction in which said controller member may be moved.

5. In an electric controlling mechanism, a controller, a connector plug, and means separate from each of the same for controlling the operation of the controller and the removal of said connector plug.

6. ln an electric controlling mechanism, a controller and operating` means therefor, a connector plug, and independently manually operable means for controlling the operation of said controllerand removal of said plug.

7. In an electric controlling mechanism, a controller having .operating means therefor, a connector plug, means whereby said controller is movable to a plurality of successive positions while said plug is in an operative position, and independently manually operable means for controlling the operation of said controller and movement ofsaid plug operative in one adjusted position to permit operation of said controller while preventing insertion or removal of the plug.

8. In an electric controlling mechanism,

imm

e controller ,having y.operating mmm 101', .a connector frills, and separate 'milependntly maimluly OPOlzlll mms WWW trolling the operation of said controller t i movement of said iplqg operatiivein one,A justed position ,to permit nioval of said ,plug 'While ,-lonking icon; trolleragainstcoperation. A A

9- ln anieleqtvic controlling mechanism a reversing switch, Wnnector p ug, and

manually operable oontroll' `moans p@- rate .from eaclnof .the same orcontmig the direction Ain .which saidi-rsversingswitn ot' thelplug. 10. t man electric controlling mechanism, :1 reversing switch, a connector plug means separately controlled r lockimaid reversing switch against `movement ineithr direction Vor for freeing it fonmovementfin' one oi-theiother directonmsaid means being operative alsoito control saidlplug.

11. Inanielectrlc controlling mocha a rotatable ,controller ada tedto be mov Plug, and maiiullyiccnttellsd www ole toloclsaid .controller against rotatign while releasingaid.cinnecstm', lugando a' bili@ 1'.

106k -Seid iconnetor plus A"EY swing said controller. r

12. Iman electric controlling: .meh ,I a rotatable. controller a,dqptedJ be in opposite directions, ax p lease l erable `to lock said cpntrollgr ,aganlhrqtw tion whilerreleasing said, oonnectr plug and to lock said connector plug whi e releasing said controller, saidmeansbeing operative on opposite actuation thereof to runt, posite actuation of said contro ler wim locking oonnectorplug irrespective .of its direction .of actuation.

13. Ina` controlling mechanism, a r

able drunnaml means for controlling rection of. rotation of said drum inc riding@ member rotta/table With ,Saidk'llmnd hrl.' ing a pair ofspaced oppositelyifacing wing` carried therebyLso disposedyasfto provide a notch between `said wings with boulders ings. pair of spaced oppositely facing Wings carricd.t,hereby sodisposed as to provide a mon 0r .mi

tor operating -the reversug .sante .and

in Opposite directions@ re welll@ @nectar @www plus, ad manually ciiiitrdled,` means QP- fl?? notch between said wings with shoulders disposed atP opposite endsl of said notch, a member lo tosaid notc tudmllymovable .with respect t andvwigsiand adapted w ce W van... U e

millesimi nachlachnni ani-.amat muslims nu; ,E

operate therewith to control the direction of sai-d drum, and means including arack, a rotatable pinion and means for rotating said pinion for controlling said locking means.

15. In an electric circuit controlling mechanism, a plug operative when removed to open said circuit, a controller rotatable to make or break the circuit and means including a longitudinallyv movable shaft cooperating with said controller to control the operation thereof, and a rotating shaft co operating with said plug to control insertion and removal thereof, and common operating means for said shafts for interlocking said connector plug and said controller.

16. In an electric controlling mechanism, a controller, a connecting plug, and independently operable means for controlling the movement of said controller operative on movement to release the latter to first lock the plug.

17. In an electric controlling mechanism, a controller, a connecting plug, and independently opera-ble interconnected controlling means therefor operative on movement to release said plug to first lock said controller.

18. In an electric controlling mechanism, a controller, a connecting plug, and independently operable means for controlling said controller and plug operative to prevent release of the former unless the latter is in full circuit closing position or totally removed.

19. In an electric controlling mechanism, a. controller, a connecting plug, and independently operable means for controlling said controller and plug operative to prevent release of the former when the latter is partially inserted.

20. In an electric controlling` mechanism, a controller n rmally movable to successive positions, and a connector plug, and controlling means for said controller and for said plug including an independentlyv movable elemert normally moif'able to effect re lease or loclnie' et either of said devices as desired. i

21. In an electric controlling mechanism, a controller member movable in opposite directions from a given position, a connector plug', operative connections between said member and plug whereby one of the same is adapted to control the other, said connections including relatively movable rack and pinion elements, and means whereby upon a vpredeteri'niued relative movementthereof said member may moved in one of said directions.

22. In an electric controlling 4mechanism, a controller member movable in opposite directions from a given position, a connector plug, operative connections between said member and plug whereby one of the same is adapted to control the other, said connections including relatively movable rack and pinion elements, and means whereby one of said relatively movable elements may have extreme positions and operative to allow said controller to be moved in opposite directions when said positions are obtained.

In testimony whereof I aflx my signature.

CHARLES WV. WYMAN.

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