US1792467A - Hoisting mechanism - Google Patents

Description

, Feb. 10, 1931.

HOISTING MECHANISM Original Filed March 12, 1925 I 0e 21/ Jar." $01 405)? 08900 (i (la/Momma" l I v UNITED STATES, E 1 I cHAnLns F. oseoon, OF'CLAREMONT, NEW HAMPSHIRE, ASSIGNOR 'r o' sULnrv N Patented Feb. 10, 1931 MAGHINEEY COMPANY, A oonPonA'rIoN or M ssAcn sETrs noIsr-rne MEoHAnIsM f Application filed March 12, 1925, Serial No. 15,057. Renewed November 10, 1930.:

, larly those of the double drum type, area:-

tensively used for what is called slushing, in the operation of which a scraper will be dragged .back andforth through the material to .be loaded. It happens sometimes that the load is too great for normal starting and should the hoist be of thetype wherein. the

drums are driven while the motor "is coming up to speed, the motor, if'of the electric type, is very liable to be'burnt out. In hoisting mechanisms, such asherein disclosed, a reversible type of motor is used with suitable means to drive automatically onedrum or the other in accordance with the direction ofmotor rotation and thus cause the drums to be reversely rotatable. 'An object of the invention is accordingly to provide improved means whereby the driving torque can be gradually applied to the motor while retain ing the feature of automatic alternate clutching of the drums. A further object is to provide improved means for supporting the drums. A still further object is to provide improved means for driving the drums from a reversible type of motor and improved means for supporting the motor in a suitable standard In the accompanying drawings I have shown for purposes ofillustration one form which my invention may assume in practice. v I

In thesedrawinga-fl Fig. 1 is a longitudinal section showing the driving motor in elevation.

Fig. 2 is a fragmentary detail view of the automatic clutching mechanism taken in section on line 22 of Fig. 1. p

In the illustrative embodiment of my invention a base 1 supportsat opposite ends a removable standard 2 and a fixed standard 3 having-stepped bores 1 and 5' tor'receive, herein, an electric motor casing 6 having corresponding enlarged and reduced IJOI".

tions. A motor head 7 clamps by bolts -8 a split ring 9 against the (3116b of the standard 3, thereby to longitudinally clamp upon engagement of shoulders a, 66 the motor casa ing 6 against movement in the standard. It is also clear that instead of using the ring 9, the flange of the head 7 coul'd'be radially extended to overlie the outer end of the standard 3 totakev the place of ring 9; To as semble such aconstruction would necessitate removing the head 7 before insertion of the main body of the casing 6-through the right hand end of the bores 4 and 5,, after which replacement ofthe head 7 would cause the necessary clamping effect; whereas with the, other construction, the headwould only have to be loosenedto permit slipping in of the split ring 9 between the adjacent ends of the head and casing. A drum or driver member 10 is rotatably-mounted on the casing by a bearing 11 at-one end; and is supported at its other end by a plate 12 having a stub shaft 13 journaled as by bearings-14 in a hub 15, in turn journaledin the standard 2.; Formed --integral'with the hub 15 is a radial flange 16 carrying an internal reaction gear 17 adapted to be held against rotation bya manually operable friction band 18. Rotaposed a longitudinally slidable ratchet ring 26 splined at 27 to, and surrounding, the

drum 10. Thisring hason its opposite sides reversely disposed ratchet teeth 28 and 29 re-' spectively engageable withzteeth 30 and 31 carried on the drums 19 and 20 respectively. 1

The teeth carried by the respective members 'areprovidedwith, cam surfaces 28, 29' and 31 in order to'elfect automaticshifting hereinafter described. Drivinggearingfor rotating the drum or driver member-1O comture shaft'of the 'electricmotor and meshing with a gear 33 fixed to ashaft'34 journaled'in a bracket 35. Fixedly carried at the. oppo T prises a motor pinion'32 fixed to the armasite end of said shaft is a pinion36' meshing" with a gear 37 fixed to a shaft 38 journaled in bearings 39 carried by the plate 12. A pinion 40 is fixed to the shaft 38 at its opposite end, and this pinion meshes with a gear 1 gear 17 and gear 41 continuously mesh. During driving of the drums any tendency for the motor casing 6 to rotate will be prevented by having keys 43 ,disposed between the casing and standard 3.

' applying a loadffor otherwise the current might beso excessive asto burn out the arma ,ture windings. Thus, assumingthat thc'motor has come up to speed alone, andisrotating in a predetermined direction the fric-i vtion band 18 will be applied' to gradually cause the gearingl? and 32' to 41' to rotate the drum v10, whereup'onth'e ratchet 26 will automatically shift into engagement with the drum which. is driven duringtheflparticular direction of rotation of the motor, When it is ,de s'ired'to drive the Otherdrum, the friction;band18 will be releasedand the "motor;

reversed'an'd brought up to speed, after which reappli'cation of the band 18 will cause rotation 'of'the drum 10 in the opposite direction; and accordingly the ratchet ring 26 will shift into engagement withthe other drum. If it is 'found that the load'is too great when the ratchet ring engages the teeth 30 or 31; the operator can, immediately after;

the ring is, shifted,releasethe band l8 and gradually reapply the same to thereby prevent stalling of the motor jresu'lting in the" I 'erative driving connections between said motorand said drums including "controlling possibility, of burning out the motor;

While, I have in this application specifically described one form which my'invention may assumein practice, itwill be understood that this form ofthesame is shown for purposes of. illustrationand that theinvention may modified and" embodied 'in various' other "forms without departing fromj itsspirit or the scope oftheappended claims.

, What I claim as new'and desire to secure by'Letters' Patent is: i 7 i '1. A hoisting fechanism comprising a pair off winding drums, a reversible. motorfand operative driving connections "between said motor and said drums including means for conneetingone drum to said motor and for disconnecting the, other 1 drum therefrom automatically inaccordancezwithf the direcaction gear; V

'2: A; hoisting mechanism comprisingfa' 'tion of motor rotationpsaiddriving connections including a frictionally controllediredriver mmber, a, pair of win'dihgdfums, a

reversible motor, operative driving connection kbetweensaid motor:-and said driver' 7 member ncluding a frictional-1y 1 controlled reaction gear, andm'eans operative whensaid driver member is driven by said motor for; connecting one "drum: to said driver member and for disconnecting the other drum there-V In operation,it is always highly desirable in the case of an electric motor to have the same come up to 'itsijnormal speed before tion of motor rotation.

from automatically in accordanceywith the reversible motor, operative driving connec tions between said motor and said driver member including a frlctlonally controlled reaction gear and means operatlve'when'said reaction gear is frictionally controlled to Cause" the. driver. member to be driven and including a shiftable member connected to said driver member adapted to alternativelyv engage said drums for connecting one'drum to said driver member and for disconnecting the other drumitherefrom automatically in accordance with'the direction of motor rotation. I

' 4. A hoisting mechanism comprising a' pair'of winding drums each having ratchet teeth carriedthereby, a reversible motor, and operative driving connections between said motor and said drums including controlling means operable at will for frictionally connecting said drums and said motor or releasing the same therefrom to permit running of said motor while said drums remain stationary, said driving connections including a'shiftable ratchet ring alternatively engageable with the-ratchet teeth on said drums automatically in accordance with thezdiree- 5. A hoisting mechanism-comprising a pair of winding drums, each having ratchet teeth carried thereby, a reversible motor, and V op-' means operable at will for frictional'ly eon-r said, motor while said drums remain stationary, said driv ng connect ons lncluding a ratchetring, and means formed on said ratchet ring for effectingjshifting ofthe latter to alternatively connect said drums to. said motoraut'omatically in accordance with the direction of motor rotation;

6. A hoisting mechanism comprising a pair-of winding drums, a: reversible motor,

and operative driving connections between said motor and said drums including a' frictionally controlled reaction gear,"saiddriving connections including means; disposed between adjacent ends of'said drums and operable toalternatively connect said drums to said motor automatically in accordance with the direction of motor rotation.

a 7. A hoisting mechanism comprising a rotor and said casing including controlling nieansoperable at will for frictionally'corh said motorj while saidcasing remains sta- 'taitablecasinga pair o f'winding drumsfjourv naled QILSaICl casing, a reversible motor, operative drlving connections between said motionary, and means operable when said motor is connected to said casing by said controlling means for connecting one drum to said casing and for disconnecting the other drum therefrom automatically in accordance with the direction of motor rotation.

8. A hoisting mechanism comprising a lo tatable casing, a pair of winding drums rotatable about said casing, areversible motor, operative driving connections bet-ween said motor and said casing including a driver gear carried by said casing and a frictionally controlled reaction gear with which said driver gear is constantly meshed, and means operable when said reaction gear is frictionally controlled to produce rotation of said casing for connecting one drum to said casing and for disconnecting the other drum therefrom automatically in accordance with the direction of motor rotation.

9. A hoisting mechanism comprising a rotatable casing, a pair of winding drums rotatable about said casing, a reversible motor, operative driving connections between said motor and said casing including a driver gear carried by said casing and a frictionally controlled reaction gear with which said latter gear is constantly meshed, and means operable when said reaction gear is frictionally controlled to produce rotation of said casing for connecting one drum to said casing and for disconnecting the other drum therefrom automatically in accordance with the direction of motor rotation, said automatic means including a shiftable element connected to said casing and alternatively engageable with said drums. p

10. A hoisting mechanism comprising a rotatable casing, a pair'of windingdrums rotatable about said casing, a reversible motor having a stationary casing on which said rotatablecasing is journaled, operative driving connections between said motor an'dsaid rotatable casing including controlling means operable at will for frictionally connecting" said casing to said motor or releasing the same therefrom to permit running of said motor while said rotatable casing remains stationary, and means operable when said motor and rotatable casing are connectedjby said controlling means for connecting one drum to said rotatable casing and for disconnecting the other drum therefrom automatically in accordance with the direction of motor rota- 1 tion.

11. A hoisting mechanism comprising a rotatable casing, a pair of coaxial winding drums journaled thereon, reversible motor having a stationary casing on which said rotatable casing is journaled, operative driving.

connections between said motor and said rotatable casing including a driver gear carried by said casing and a frictionally controlled vreaction gear with which-said driver gear is constantly meshed, and means operable when a rotatable casing journaled on said stationary motor casing, a pair of relatively rotatable winding drums, operative driving connections betweensaid motor and said rotatable casing, and means for alternatively'connecting said drums to sand rotatable casing automatically in accordance with the direction of motor rotation.

13. A hoisting mechanism comprising a motor having a stationary casing, a rotatable casing journaled onsaid stationary motor casing, a pair of relatively rotatable'winding drums, operative driving connections between said motor and said rotatable casing, and means for connecting said drums to said rotatable casing.

14. A hoistingmechanism comprising a frame, a motor having a stationary motor casing secured to said frame, a rotatable casing journaled at one end on said stationary motor casing andat the other end n said frame, a pair of relatively rotatable winding drums journaled on said rotatablecasing, operative driving connections between said .motorand said rotatable casing, and means for alternatively connecting said drums to said rotatable casing. I

15. A hoisting mechanism comprising a frame,"a motor having a stationary casingsecured to said' frame, a rotatable casingjournaled at one end on said stationary mo tor casing and at the other'end thereof on said frame, a pair of relatively rotatable winding drums journaled' on said rotatable casing, operative driving connections between said motor and said rotatable casing, and m'eansincluding a shiftable' member disposed between the ad acent ends of said dr'umsfor alternatively connecting the latter to said I rotatable casing.

motor having a stationary casing, a rotatable casing ournaled on SZLICl stationary motor casing, apair of relatively rotatable windmg drums 1ournaled on said rotatable casing, operative driving connections between said motor and said rotatable casing includlng controlling means'operable at will for 16. A hoisting'mechanism comprising a frictionally connecting said rotatable casing I to said motor or for releasingthe same therefromto permit running of said motorwhile said rotatable casing remains stationary, and 7 means for connecting saiddrums to said rotatable casing.

17. A hoistlng mechanism comprising a viding'a support for said driver member so produce rotation of the engaged drum upon 7 rotation of said supporting memberi p "21. A hoisting mechanism comprising a 'mot'or havinga motor casing, a rotatable driving easing, operative driving connections I between said motor and said driving casing that one of the drums surrounds the motor casing, and operative driving connections between said power shaft and said winding drums including said driver member.

19; A llOlStlIlg mechanlsm comprising a reversible motor, a pair of Winding drums,

and operative driving connections between said motor and drums for alternatively drivin'g saiddrums 1n oppositedirections by said motor automatically in accordance with the y direction of motor rotation, said driving confrlctionally 'connections including a single trolled reaction gear. 77

20. A hoisting mechanism comprising a pair of coaxial winding drums, aimotor having a casing, and operat ve drivingco-nnections between said motor and 'drums including a member for supporting saiddrums,

said member beingrotatable relative to said motor casing on the axis of said drums, gear ing .driven by said motor carried by said supporting member, aifrictionally controlled reaction gear 'meshing with a gear carried by said supporting member, for controlllng ro- 'tdtIOIl of said supporting member, and means alternatively engageable with. said drums to for rotating the latter relative to said motor casing including gearing carried by'said driving casing and a friction controlled reaction gear with which said gearing constantly; meshes, a pair ofrelativelyc rotatable, Windf ing drums, and means for alternativ neeting said drums to said casing.

'22. A hoisting mechanism comprising a" motor having a motor casing, a rotatable sup-c porting casing,a pair of relatively rotatable winding drums rotatablyv mountedthereon,

said supporting casing being rotatable relative tosaid motor casing, and operativefdriv= ing connections between said motor andsaid winding drums including said supporting casing and means splined thereto, said'splined means being conneetible with said winding I drums. to produce rotation' thereot' in oppos1tedirect10nsonly. o

ely c'on- .233A hoisting-mechanism comprising a framehavlng spaced supporting standards, a reversible motor having a stationary casing carried by one of said standards, a rotatable casing journaled at one end thereof on said stationary-motor casing and at'the other end thereof'on said other standard,a pair of winding drulns rotatably supported on said rotatable casing, operative driving connections between saidmotor and said rotatable cas ng-including gearing carried by the latter and revolvingtherewith and a frictionally controlled reaction gear with which said gearing constantly meshes, said reaction gear being rotatably supported by said other standard and when released being free to rotate to permit running of said motor while said drums remain stationary, and means for connecting one drum to saidrotatable casing and for disconnecting the other drum therefrom automatically in accordance with the direction of DIOtOI"lOllLtlOIgSLldEJ1130- matic means including a ratchet element automatically shiftable upon reverse rotation of said motor.

24. hoisting mechanism comprising a pair of coaxial relatively rotatable winding drums, a motor having ,a stationary casing acting as. a support for said drums, and-oper- .ative .drivmgconnections between said motor and each of said drums including manually operable friction controlling means, said controlling means permitting running 7 of said motor while said drums remainstationary, both of said drums being disposed at one end ofsaid motor with one of said drums surrounding said motor casing. v

.5;A hoisting mechanism comprising a pair of coaxial relatively rotatable winding drums, amotor having, a stationarycasing acting as a support for'said drums, and optor and each of said drums whereby the latter fmay be alternatively driven including manually operable friction controllingmeans,

erative driving connections between said Imosaid controllingmeans permitting running of fsaid motor while said drums remain stationary, both of said drums being disposed at one end ofsaid motor with one of said drumssurroundingsaid motor casing- V or I H 26.j'A:;h01st1ng rmechanisni comprising a motor J hav ng a stationary casing-providing a cylindrical bearing surface on itspe riphery, a supporting standard having a bore with a shoulder formed therein, said motor casing being receivable in said bore and having a shoulder engaging the shoulder oftheibfore, a winning mechanism havingat one end an internal bearing surface surrounding and journaled onsaid bearing suriac'e on the periphery ofsai'd casing, means separate fronrsaid ,caslng' for supporting the other end of said winding mechanism,

operative driving connections between said motor and said winding mechanism, clamp face on the periphery of said casing, meansseparate from said casing for supporting the other end of said winding mechanism, 0perative driving connections between said motor and said winding mechanism, said motor casing including a plurality of cooperating elements adapted tobe clamped together, and an insert which when clamped between said cooperating elements is adapted to engage said standard for securing said motor casing within said bore.

28. A hoisting mechanism comprising a pair of winding drums, a driving shaft rotatable in opposite directions by (power, op-

eartive driving connections between said shaft and said drums including means for connecting one drum to said motor and for disconnecting the other drum therefrom, or

vice versa, automatically in accordance with the direction of shaft rotation, said driving connections including a frictionally controlled reaction gear.

29. A hoisting mechanism comprising a driver member, a pair of winding drums, a reversibly rotatable driving shaft, operative driving connections between said shaft and said driver member including a frictionally controlled reaction gear, and means operative when said reaction gear is frictionally controlled to cause the driver member to be driven and including a shiftable mem ber connected to said driver member and adapted to engage said drums alternatively, for connecting one drum to said driving member and for disconnecting the other drum therefrom, or vice versa, automatically in accordance with the direction of motor rotation.

30. A hoisting mechanism comprising a pairo-f winding drums each having ratchet teeth carried thereby, a reversibly rotatable driver shaft, and operative driving connections between said shaft and said drums including controlling means operable at will for frictionally connecting said drums and said shaft or releasing the former from the latter to permit said drums to be stationary though said shaft is rotated, said driving connections including a ratchet ring and means formed on said ratchet ring for effecting shifting of the latter to connect said drums alternatively in driven relation with said shaft automatically in accordance with the direction in which said shaft is rotated. 31. A hoisting mechanism comprlsmg a pair of winding drums, a reversibly rotatable driving shaft, and operative driving connections between said shaft and said drums including a frictionally controlled reaction gear, said driving connections including means disposed between adjacent ends of said drums and operative to connect said drums alternatively to said shaft automatically in accordance with the direction of shaft rotation.

32. A hoisting mechanism rotatable casing, a pair of winding drums journaled on said casing, a reversibly rotatcomprising a' able driving shaft, operative driving con- 7 nections between said shaft and said casing including controlling means operable at will for frictionally connecting said casing in driving relation with said shaft or interrupting said driving connection to permit said casing to remain stationary though said shaft be rotated, and means operable when said shaft is connected in driving relation with said casing by said controlling means for connecting one drum to said casing and for disconnecting the other drum therefrom automatically in accordance with the direction of shaft rotation. i v

33. In a hoisting mechanism, a rotatable casing, a pair of winding drums rotatable about said casing, a reversiblyrotatable driving shaft, operative connections between said shaft and casing including a driving gear carried by said casing, and a frictionally con trolled reaction gear with which said driver gear constantly meshes, and means operable when said reaction gear 1s frlctlonally controlled to produce rotation of said casing for connecting onedrum to said casing and for disconnecting the other drum therefrom automatically in accordance with the direction of rotation of said driving shaft.

34. In a hoisting mechanism, a rotatable casing, a pair of winding drums rotatable about said casing, a reversibly rotatable driv= ing shaft, operative connections between said shaft and casing including a driving gearcarried by said casing, and a frictionally controlled reaction gear with which said driver gear constantly meshes, and means operable when said reaction gear is frictionally controlled to produce rotation of said casing for connecting oneclrum to said casing and for disconnecting the other drum therefrom auto-. matically in accordance with the direction of rotation of said driving shaft, said automatic means including a shiftable element connected to said casing and alternatively en-' gagable with said drums.

In testimony whereof I afiix my signature. CHARLES F. OSGOOD.

CERTIFICATE 0F CGRRECTION.

Patent No. 1,792,467. Granted February 1! .5931, to

CHARLES F. OSGOOD.

ted specification of the Page 2, line 73, claim iii 2e 50, claim 29, for the Patent should be read with conform to the record of the case 6th day of ()ctober, A D. 1931.

M. J, Moore, (Seal) Acting Commissioner of Patents.

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