US1181980A - Controlling apparatus. - Google Patents

Description

A. E. NORRIS.

CONTROLLING APPARATUS.

APPLICATION FILED FEB. 9. 1909. RENEWED AUG. 31, 1914.

Patented May 2, 1916.

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A E. NORRIS.

CONTROLLING APPARATUS.

APPLICATION FILED r55. 9. 1909. RENEWED AUG. 31. 1914.

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A. E. NORRIS.

CONTROLLING APPARATUS.

APPLICATION FILED FEB. 9. 1909. RENEWED AUG. 3!, 1914.

1,181,980. Patented May 2,1916.

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CONTROLLING APPARATUS.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed February 9, 1909, Serial No. 476,947. Renewed August 31, 1914. Serial No. 859,562.

To all whom it may concern Be it known that I, ALMON E. Noums, a citizen of the United States, residing at Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Controlling Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to improvements in controlling devices, the same being more particularly, though not exclusively, in tended for the control of hoisting apparatus.

In the following description I have shown one embodiment of my invention as applied to the control of a self-propelled trolley carriage equipped with a grab or bucket, but my invention is applicable also to hoisting apparatus equipped with other forms of load carrying devices and to systems employing other than self-propelled carriages.

In the specific embodiment of my invention herein shown the self-propelled trolley carriage is operated through means of a plurality of electric motors, and my invention as to certain of its aspects relates to the effective and simple control of electric or other motors, and, in this respect, is applicable not only to hoisting apparatus but other devices as well.

My invention will be best understood by reference to the following description when taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings: Figure l is a side elevation of a self-propelled bucketsustaining, trolley carriage embodying one form of my invention; Fig. 2 is a detail in side elevation of the magnetically released brake employed both for the traversing and grab-operating motors; Fig. 3 is a plan view partly broken away showing the hoisting and traversing mechanism for the trolley carriage; Fig. at is a side elevation in partial section and partly broken away showing the cab or operators compartment fitted with the controlling levers, Fig. 5 is acentral, sectional elevation partly broken away, and on an en:

larged scale, showing the main controlling levers for the hoisting and traversing motors; Fig. 6 is a diagram illustrative of electrical connections which may be employed on the controller for the traversing motor; and Fig. 7 is a diagram illustrative of the connections which may be employed on each of the controllers for the two grab operating motors.

Referring to the drawings and more particularly to Fig. 1, wherein is illustratively shown one form of my invention, the trolley carriage 1 may be of any suitable construction, it being herein shown as provided with the truck wheels 2 mounted to run upon the trackway 3, the latter sustained by the structure 4, which may be a tower, bridge or other elevated structure along which the conveyance of coal or any other material is desired.

The truck wheels 2 are driven by means of the two electric traversing motors 5, the latter being operatively connected to axles through a driving pinion 6 and gear 7. Electric current is supplied to the carriage from any suitable source and by any of the well-known devices (not here shown), the

motors herein being simultaneously controlled by means of a single controller 8 located in the cab 9 which depends between the tracks from the trolley carriage.

lVhile, as will be more fully described, the traversing motors may be connected through their controller dynamically to retard or brake the trolley carriage, for emergency purposes such, for example, as in the case of the cutting off of the supply current, or to serve as a supplemental or aux iliary brake, each motor shaft is provided with an emergency brake 10, herein of the band brake pattern, encircling a brake drum 11 and adapted to be applied by means of a rope or cable connected to the end of the brake lever 12 and leading to the cab. The controlling rope 13 for one brake passes upward over the sheave 14, thence to the sheave 15 and thence to the cab. The remaining rope 16 passes up and over the pulley 17 and thence downward about the pulley 18 (see Figs. 3 and 4). In the cab they are joined to form a single depending loop which passes about the guide sheave 19, the latter ournaled in the frame 20 and connected to the foot lever 21 which is pivoted at 22. The foot lever is located directly beneath the operators seat 23in the cab, so that the brakes may be readily applied by him when a positive stop is required.

Referring now to the grab or bucket 24 and the controlling devices therefor, the former may be of any usual and ordinary construction provided with usual jaws adapted to be opened and closed by the opening and closing rope 26, while the bucket as a whole may be held, or raised, or lowered by means of the hoisting or holding rope 27 The opening and closing rope 26 leads upward over and about a rope-winding drum 28 arranged transversely on the trolley carriage, while the hoisting rope 27 is wound upon a similar rope-winding drum 29 arranged parallel with the opening and closing drum. Herein, for the sake of balancing the grab, each winding drum, as shown in Fig. 3, has two rope-receiving portions, and a double rope or cable is employed both for opening and closing and hoisting, one portion being wound upon each end portion of each winding drum. Such feature, however, is immaterial so far as the present invention is concerned, and a single opening and closing rope and a single hoisting rope may be employed without distinction.

Herein the opening and closing drum 28 is driven through the driving gear 30, which latter meshes with the driving pinion 31, the latter driven in turn by means of the electric motor 32. On the other hand, the hoisting drum 29 is driven through the driving gear 33, driving pinion 34 and the electric hoisting motor 35.

Herein I have provided in or adjacent the cab 9 a controller 36 for controlling the opening and closing motor 32 and a separate controller 37 for the hoisting motor 35, and have so arranged and consolidated the operating devices for these two controllers, together with the operating devices for the controller for the traversing motors, that the operator, while in his assigned position, holds within the grasp of his two hands all the elements of control for traversing the trolley carriage, raising and lowering the grab and opening and closing the jaws thereof.

Referring now more particularly to the controlling devices through which the operator controls the operation of the several motors, the specific arrangement for which is shown in Fig. 5, the controller 36 has its controller shaft 38 connected to be turned through the bevel pinion 39, while the controller shaft 40 for the hoisting controller 37 is similarly turned through the bevel pinion 41. Meshing with the pinions 39 and 41 are the bevel gears 42 and 43 re spectively, these being mounted on hollow sleeves 44 and 45, the latter journaled in stationary brackets 46 and 47 respectively.

To the opposite end of the sleeve 44 is keyed a depending operating lever 48, while to the sleeve is similarly fastened an operating lever 49, such levers hanging down in front of the operators seat 23 and presenting to the operator, when the latter occupies such seat, the laterally projecting 7 5 inturned handles 50 and 51. By means of the operating levers described the operator can turn either controller shaft at will and thereby has at his command the independent control of both the hoisting motor and so the opening and closing motor.

The traverse of the carriage is controlled by devices preferably within the grasp of the operator while still exercising his control over the operating levers for the two controllers described. While this may be accomplished in various ways, herein the two sleeves 44 and 45, to which are keyed the operating levers, are in axial alinement and through them extends the axially movable ojjJerating rod or member 52 which carries at one end the toothed rack 53 meshing with the pinion 54 on the controller shaft of the traversing controller 8. The axial movement of the operating rod 52, therefore, serves to turn the traversing controller in either direction at will.

To maintain normally the operating member in'an intermediate and neutral po sition, the latter is provided with collars 55 pinned thereto, such collars having a diameter less than the axial bore of the sleeves 44 and 45, and is also provided with washers 56 of a diameter greater than that of the axial bore, there being provided between 1 7 the said washers the coiled spring 57. This maintains the operating rod normally in a neutral position with the washers resting against the inner face of the bevel gears 42 and 43, but permitting the rod to be moved in either direction at will. For example, the righthand end of the rod, as viewed in Fig. 5, is forced to the left, the right-hand collar 55 forces the adjacent washer against the spring and the latter being compressed the rod moves to the left, as is represented in dotted lines.

To control at will the movement of the operating rod, the latter is provided at each end and on the outside of the operating levers and gear sleeves, with pairs of fixed collars-'58 and 59 respectively, between the members of each pair of which are secured the loosely rotating sleeves 60 and 61 jointed to the bell crank levers 62 and 63. The latter are pivoted each upon the adjacent operating lever, the bell crank lever 62 having its opposite arm connected to the link 64, whiclnin turn, is jointed to the hand grip or lever 65 pivoted to the under side of the inturned handle 50, so that the operator when desired can, Without losing his control over the said handle, squeeze the .said grip more or less and thereby move the operating rod to the left. Similarly, the remaining bell crank lever 63 is jointed to the link (36 and the latter to the pivoted hand grip 67 underlying the handle 51.

The operation of these controlling devices will be apparent. As the operator presses on the hand grip 65, moving it to the dotted line position shown, the operating rod is moved to the left and the hand grip 67 moves slightly outward, as shown in dotted lines, Fig. 5. This turns the controller shaft in one direction, while opposite movement may be imparted thereto by squeezing the hand grip 67 and relieving the hand grip 65. This control of the traversing motor is effected without relinquishing any of the control exercised over the grab or bucketmotors.

Not only is the starting and stopping of the bucket and traversing motors con trolled by the controlling devices described, but also the retardation and braking of such motors. This may be accomplished in various ways, but herein for purposes of illus tration it is shown as effected by electric means, this being done by so connecting the fields and armature of each motor at a certain position or positions of the controlling handle as to cause it to run as a generator and exert a dynamic braking effect.

In Fig. 6 I have shown a simplified controller diagram for the traversing motors which is sufficient to illustrate the principles of this system of control, although in actual practice additional elements of control, such as relay magnets. overload switches and other devices well-known in this class of apparatus may be and prefei ably will be employed and the controller 8 may and preferably will be a master controller operating a main controlling device. Herein, however, consideration of such features is omitted for the sake of simplicity.

Referring to Fig. 6, a development of the controller drum is shown, at one end of which are indicated the controller contacts. the positive line contact being shown at 68 and the negative contact at 69. The motor fields are connected to the contacts 70 and T1 and the armature to 72 and 73. Additional contacts 7% to 77 inclusive are pro vided. resistance coils being interposed be tween the contacts 74 -75- and 7 57 6.

In the neutral position of the operating rod 52, which position is designated at 0 in Fig. 6, the stationary cont-acts are entirely disconnected from the drum contacts and the motor circuit is open. In this position, as will appear later, the motor is preferably held fast against movement in either direc tion. Movement of the controller drum in either direction, whether to the position a or a, connects the fields and armature of the motor in short circuit so that, while the motor may turn, it acts as a generator or dynamic brake with its braking effect at a maximum. Movement of the controller to the positions Z) or b, c or 0' acts gradually to reduce the braking effect of the motor by cutting into circuit therewith one or more of the resistance coils connected between the contacts Tet. 75 and 76. If the controller is moved from the position indicated at c to that indicated at (Z the motor is then con nected to the feed mains but with all resistance coils in circuit. This causes the motor to run in one direction as a motor at its slowest speed. If the controller is moved to the opposite but corresponding position d the motor is driven and the carriage traversed in the opposite direction. By moving the controller to the position 6, e or f. f successive resistance coils are cut out and the speed of the carriage accelerated until the maximum is reached.

It will therefore be seen that, by manipulation of the hand grips described, the car riage may be moved in either direction, or a dynamic braking effect applied to bring the same to rest.

The contacts are so arranged. it will be observed, that, if the controller is moved to slow down the speed of the carriage in pass ing through successive positions, it acts first to reduce the speed of the carriage and then to impose a gradually increasing retarding effect as connections are completed to operate the motor as a brake. Finally, if the motor is to be reversed, the controller must first be moved through that position which affords the maximum braking elfect before such can take place. In other words, the contacts are so arranged as to provide for a natural and gradually increasing and decreasing retardation or acceleration. as the case may be, in passing from one position to another.

WVhile the operator may rely upon the emergency brake for locking or holding the trolley carriage fixed and immovable in one particular position, herein I have provided electro-magnetic means so regulated by the controller 8 that. when the controller is in its neutral position (designated at 0), the carriage will be held against movement by ositive means apart from the dynamic brake referred to. Herein there is provided for this purpose upon each traversing motor shaft a brake drum '78 encircled by a brake band 79. The latter (see Fig. 2. where there is shown a similar brake band 88 for the hoist motor) is split and normally held open and freed from the band by the jointed toggle links and 81. The link 81 has also an upright arm 82 connected to the plunger 83 of a solenoid magnet 84 which, it

when energized, draws the arm over to spread the toggle and hold the brake released. hen the magnet is denergized, however, the brake is applied by springs 85 encircling the rod 86 passing through the split ends of the band, which springs act against the band causing the same to grip the drum '78.

Referring again to Fig. (5, the magnet 8% is connected between the negative line and the controller contact 87, and contacts are provided upon the controller drum such that current is supplied from the positive main through the magnet to energize the same for ll positions of the controller except the mid or neutral position 0. The result is that the brake is held released when acceleration or retardation of the motor is desired, but automatically applied positively to stop the carriage when the hand grips are released.

Referring to Fig. 7, there is shown a similar skeleton diagram of connections appro priate for both the hoist motor controller or the controller for the opening and closing motor.

In thenormalposition of the controller drum indicated at g, the motor is disconnected from the line. In such position, however, the motor shaft and, therefore, the winding drum, is positively held against movement by means of a band brake 88 constructed and operated similar to the band brake 79 for the traversing motor. One such brake is provided for both the hoist motor and the opening and closing motor, so that the motor is held fast by the application of the band brake in the mid or off position of the controller, but automatically released for all other positions of the controller.

F or winding in the grab operating rope the controller is first turned to the position it which releases the band brake and gives the slow speed. hen turned to the successive positions 2" and j, a gradually accelerated sped is secured by cutting out the several resistance coils. \Vhen turned in the opposite direction, 2'. 6., to the positions It, i or j a suitable and graduated retardation to the unwinding of the rope is effected to a greater or less extent according to the number of resistance coils cut in or out of circuit. This delicately controls the descent of the bucket or the opening or closing of the bucket jaws.

Obviously, as many sets of resistance coils or steps and notches to the controller may be employed as found needful to secure the desired graduation in the control.

While I have herein shown and described for purposes of illustration one specific embodiment of my invention, it is to be understood that the same is not limited to the specific arrangement of parts herein shown, or the details of construction disclosed, but that extensive deviations may be made from the description herein without departing from the spirit of the invention. 7

Having thus described my invention, what I claim is:

1. In a system of control the combination with electric motors, of a pair of controlling levers, an electric controller operated by each lever, a third motor and controller and controlling devices within the grasp of the operator while exercising his control upon the said controlling levers for operating said third controller.

2. In a system of control the combination with a pair of electric controllers, each having its controlling shaft, a pivoted controlling lever for each, operative connections between each controlling lever and its controller comprising a gear connected to turn with the lever and an intermeshing gear connected to turn each its controller, said operating levers being pivoted in axial alinement, a third controller, an operating member connected to move said third controller and extending axially through said operating levers, means upon the operating levers for reciprocatively moving said axially movable operating member, the same comprising a pivoted hand grip upon each lever, bell crank lever pivoted on the operating lever and connected both to said op erating member and said hand grip, one of said hand grips being operative to move said operating member in one direction and the other in the opposite direction, and means for maintaining said operating member nor anally in a neutral or intermediate position 3. The combination with electric motors and controlling means therefor, of operating devices for said controlling means comprising a. pair of operating levers, a controlled member for each, and operating connectionr between the same, a third motor and con trolled member, and means upon one of said operating levers and within the grasp of the operator while exercising control over the same for moving said third controlled member.

4. The combination with electric motors and controlling means therefor, of operating devices for said controlling means comprising a pair of operating levers, a controlled member for each, and operating connections between the same, a third controlled mem her, and means upon each controlling lever connected to said third controlled member and acting to move the same, one in one direction and the other in the opposite direction.

5. In a system of control the combina tion with one or more electric motors and el .ctric controlling 'means, of a pair of axially alined controlled levers each having its controlledrmember and operating connections therewith, of a third controlled member, an operating member therefor axially alined with said operating lever, and means upon one of said operating levers and within the grasp of the operator while exercising his control over the same for mov ing said operating member.

(5. A hoisting apparatus having a trolley carriage, a grab suspended thereon, one or more operating cables for raising or lowering the bucket and opening and closing the jaws thereof, means for traversing, retarding and holding fixed the carriage. means for winding in, holding and retarding the unwinding of said operating cable or cables, and means mounted upon and movable with a pair of controlling devices only for operating all of said controlling means.

7. A hoisting apparatus having a trolley carriage and a bucket or grab sustained thereon, an operating cable or cables for raising or lowering the bucket and opening or closing the jaws thereof, a motor for traversing the carriage, a motor for raising and lowering the bucket, a motor for opening and closing the jaws thereof, controlling means for driving the traversing motor in either direction, controlling means for controlling the hoisting motor and the opening and closing motor, and operating devices for said controlling means comprising a pair of hand levers for two of said controlling means, and means upon one of said hand levers for controlling the remaining controlling means.

8. In a hoisting apparatus the combination with a trolley carriage, of a grab sustained thereon, a cable for raising and lowering the grab, a cable for opening and. closing the jaws thereof, an operating lever for controlling the movement of each of said cables, a traversing motor for the carriage, and controlling means for the traversing carriage located upon one of the controlling levers for said grab operating cables and within the grasp of the operator while controlling the same.

9. A hoisting apparatus having a trolley, a grab, an opening and closing cable therefor, a hoisting cable, a controlling lever for controlling the movements of each, each of said controlling levers when in one position acting to wind in its cable, in another position to hold the same, and in a third position to retard the unwinding movement of the same, and means upon one of said levers for controlling the traversing movement of the carriage.

10. A hoisting apparatus having a trolley,

a grab. an opening and closing cable therefor, a hoisting cable, a controlling lever for controlling the movements of each, each of said controlling levers when in one position acting to wind in its cable, in another posi tion to hold the same, and in a third position to retard the unwinding movement of the same, means upon one of the controlling levers for moving the carriage in one direction, and means upon the remaining lever to move the same in the opposite direction.

11. A hoisting apparatus having a trolley carriage, a grab, an opening and closing cable, a hoisting cable, an electric driving motor with its winding drum for controlling said hoisting cable, and a second motor and its drum for the said opening and closing cable, controlling means for each motor having circuit establishing means for driving its motor to wind in the cable or for allowing the same to unwind while dynamically retarded and also for holding the winding drum fixed, an operating member for each controller, and auxiliary operating devices upon each member and adapted to be grasped by the operator while exercising control over the same, said auxiliary devices causing one, the traverse of said carriage in one direction, and the other, the traverse of the carriage in the opposite direction.

12. A hoisting apparatus having a trolley, a traversing motor therefor, a grab, operating cables for said grab, a controller for said. motor having circuit establishing means for connecting said motor to operate either as a motor or as a dynamo, and a separate emergency brake for holding said trolley carriage fixed.

13. In a system of control the combination with a pair of motors of a pair of controlling levers, a motor controller operated bv each lever, a third motor with its controller and controlling devices within the grasp of the operator while simultaneously exercising his control upon the said controlling levers for operating the third controller.

let. The combination with motors and controlling means therefor, of operating devices for said controlling means comprising a pair of operating levers, a controlled member for each, and operating connections between the same, a third controlled member, and means upon each controlling lever connected to said third controlled member and acting to move the same, one in one direction and the other in the opposite direction.

15. In a system of control the combination with one or more motors and electric controlling means, of a pair of axially alined controlled levers each having its controlled member and operating connections therewith, of a third controlled member, an operating member therefor axially alined with said operating lever, and means upon one of said operating levers and within the grasp of the operator while exercising his control over the same for moving said operating member.

16. In a system of control the combination with a pair of electric controllers each having its controlling, actuating member, a pivoted controlling lever for each, operative connections between each controlling lever and its controller comprising a gear connected to turn with the lever and an 1ntermeshing gear connected to turn each its con- 'troller, said controlling levers being pivoted in axial alinement, a third controller, an operating member connected to move said third controller and extending axially through said operating levers, and means upon the operating levers for reciprocatively moving said axially movable operating member, said means being within the grasp of the operator while exercising his control over the said controlling levers.

17 In a system of control the combination with a pair of electric controllers, a pivoted controlling lever for each, operative connections between each controlling lever and its controller, a third controller, an operating member connected to move said third controller and extending axially through said operating levers, and a pivoted hand grip upon a controlling lever for moving said axially movable operating member.

18. In a system of control the combination with a pair of electric controllers, a pivoted controlling lever for each, operating connections between each lever and its controller, a third controller, an operating-member connected to move said third controller, and means upon the operating levers for moving said axially moving member comprising a hand grip and connections between the same and said operating member.

19. In a system of control the combination with a pair of motor controllers, a pivoted controlling lever for each, operative connections between each lever and its controller, a third controller, an operating member connected to move said third controller, means upon the operating levers for reciprocatively moving said operating memher, the same including a pivotedv hand grip upon each hand lever, connections between said hand grip and the operating member,

one of said hand grips being operative to.

move said member in one direction and the other in the opposite direction, and means for maintaining said operating member normally in a neutral orintermediate position.

20. The combination with a trolley carriage, a propelling motor thereon, a grab suspended thereby, a pair of grab controlling levers on said carriage and means within the grasp of the operator for controlling the traversing motor while still exercising his control upon the grab controlling levers.

21. A hoisting apparatus having a selfpropelled carriage, a grab suspended thereon, a pair of operating cables for raising and lowering the grab and opening and closing the jaws thereof, a pair of controlling levers for controlling said cables, a trolley traversing controller and means upon the grab controlling levers for operating said trolley traversing controller.

said means being within the grasp of the operator while still exercising l11S- control over the said levers.

In a. hoisting apparatus the combination with a self-propelled carriage of a grab, a motor for raising and lowering the bucket,a motor for opening and closing the bucket jaws, a controlling member for controlling each motor and means within the grasp of the operator while exercising his control over the said controlling members for controlling the traverse of the trolley.

23. A hoisting apparatus having a trolley carriage, a grab sustained thereon, an electric motor for raising and lowering the grab, an electric motor for opening and closing the jaws, and controllers for said motors, said controllers having each means to establish connections for dynamic braking.

24:. A hoisting apparatus having a trolley carriage and a bucket or grab sustained thereon, a motor for raising and lowering the bucket, a motor for opening and closing the jaws thereof, controlling means for said motors comprising a pair of controlling members, and means within the grasp of the operator while still exercising his con trol over said controlling members for controlling the traverse of the trolley carriage.

25. A hoisting-apparatus having a trolley carriage, a grab, an opening and closing cable, a hoisting cable, an electric driving motor with its winding drum for controlling said hoisting cable, and a second motor and its drum for the said opening and closing cable, controlling means for each motor having circuit establishing means for driving its motor to wind in the cable or r'or allowingthe same to unwind while dynamically retarded and also for holding the winding drum fixed, and an operating 1nem her for each controller.

In a hoisting apparatus the combination with a grab of a trolley. means for traversing the trolley, means for controlling the trolley traverse, a pair of levers controlling the grab, and means on said levers for jointly controlling the trolley traverse controller.

27. The combination with a grab of a trolley, an electric motor for driving the trolley, levers controlling the grab, and means on the grab levers for controlling the trolley motor.

28. The combination with a trolley of a grab, a trolley motor, grab controlling le vers, and means on a grab-controlling lever for controlling and reversing said trolley motor.

29. The combination with a trolley of a grab,-an electric driving motor for the trolley, grab controlling levers, and means on a grab-controlling lever for controlling and reversing said trolley motor,

30. In a hoisting apparatus the combination ofa winding drum, an electric driving motor for the winding drum, a control ling lever for said hoisting apparatus and a hand-operated device upon said controlling lever, but movable independently thereof, for controlling said electric motor.

31. In a hoisting apparatus the combination of a trolley, a bucket, a motive device for the bucket, a controlling lever for the bucket, a driving motor for the trolley, a controlling switch for the motor, and means for operating said switch mounted upon the controlling lever.

32. In a hoisting apparatus the combination of a pair of controlling levers, a grasping device mounted upon each lever, a controlling member arranged axially with the said controlling levers, and connections between said controlling member and said grasping devices for causing movement of the former under control of the latter.

38. In a hoisting system the combination of a pair of controlling levers, a sliding rod extending axially through the same, a grasping device upon each lever connected to move said rod, one in one direction and the other in the opposite direction, and means for holding said rod normally in a central or neutral position.

34. In a hoisting apparatus the combination with a trolley of a bucket. a pair of bucket controlling levers, an electric driving motor for the trolley, and means on each of said levers for jointly controlling the motor.

In hoisting apparatus the combination with a trolley of a bucket, a pair of bucket controlling levers, an electric motor for propelling the trolley, a controlling device on one of said levers adapted to start the trolley motor, and a device on the other of said levers adapted to reverse the motor.

36. In a hoisting apparatus the combination with a trolley, a bucket, a pair of bucket controlling levers, a trolley motor, a motor controller, and a hand lever on each of said bucket levers, one of said hand levers being connected to the controller to start the motor in one direction and the other being con nected to said controller to start the motor in the opposite direction.

7 37. In a hoisting apparatus, the combina tion with a bucket, a pair of bucket ropes, rope winding drums. a motor directly connected to each winding drum, a traversing support. a pair of bucket controlling levers and means for controlling the traverse of said support adapted to be grasped by the hand of the operator while holding said levers.

38. In a hoisting apparatus, the combination with a bucket, a bucket rope, a rope winding drum and directly connected mtor, a traversing support, a bucket controL ling lever, and means for controlling the traverse of said support adapted to be grasped by the hand of the operator while holding said lever.

39. In a hoisting apparatus, the combination with a bucket, a bucket rope, a rope winding drum and directly connected motor, a traversing support, a bucket controlling lever, and means for controlling the traverse of said support including a manually actuated element connected to said le ver.

4-0. In a hoisting apparatus, the combination with av bucket, a bucket rope, a rope winding drum and directly connected motor, a traversing support, a bucket controlling lever, and means for controlling the traverse of said support including a member connected to said lever.

41. In a hoisting apparatus, the combination with a bucket, a pair of bucket ropes and rope winding drums each directly connected to a driving motor, a traversing support, a pair of bucket controlling members and means for controlling the traverse of said support including a manually controlled device upon one cf said levers.

5 .2. In a hoisting apparatus, the combination with a bucket, a traversing support, a pair of bucket operating motors, a traversing motor and means enabling a single op erator to control said three motors.

48. In a hoisting apparatus, the combination with a bucket, a traversing support, a pair of bucket operating motors, a traversing motor and grasping devices for the two hands of the operator to control said three motors.

M. In a hoisting apparatus, the combination with bucket, a traversing support, a bucket rope. a rope winding drum, an electric motor for turning said drum, a brake, means for automatically applying the brake, and means for releasing the same when the power is applied to the motor.

to. In a hoisting apparatus, the combination with a bucket, a traversing support, bucket operating ropes, a traversing motor, a brake for said support, means for automatically applying the brake, and means for releasing the same when the power is applied to the motor.

46. In a hoisting apparatus, the combination with. a bucket, a traversing support, a bucket rope. a rope winding drum, an electric driving motor. the latter having circuit establishing means for allowing the drum to unwind while the motor is dynamically retarded, a brake normally applied and means for automatically releasing the brake when the motor is dynamically retarded.

4. In a hoist-ing apparatus, the combination with a bucket of a traversed support, traversing means including a prime mover, a pair of manually operated bucket controlling members, a grasping device on one member to cause movement of the prime mover in one direction and a grasping device on the other member to cause movement of the prime mover in the other direction.

428. The combination with a bucket of a traversing support, a motor for traversing said support, means for reversing the mo -tor,a pair'ofbucket controlling levers we a graspmg dev1ce on one of said levers forgrab, an electric driving motor for the trolley, grab controlling levers and means for controlling and reversing said trolley motor including a member so connected to a grab controlling lever as to be operated by the operator while still maintaining his hold upon the grab controlling lever.

51. A hoisting apparatus having a bucket, a trolley, a pair of hand operated levers for controlling the bucket, a motor for traversing the trolley, means for reversing the motor, and simultaneously controlled auxiliary means associated with the bucket controlling levers for starting, stopping and reversing the motor, said means being within the control of the same operator to start, stop and reverse said motor while maintaining his hold upon the bucket operating levers.

A hoisting apparatus having a bucket, a trolley, a pair of hand operated levers for controlling the bucket, a motor for traversing the trolley, means for reversing the motor, simultaneously controllable means asso ciated with the bucket controlling levers for starting, stopping and reversing the motor, said means including a movable member so connected to a bucket lever as to be operated by the operator while still maintaining his hold upon the lever.

53. A hoisting apparatus having a bucket, a trolley, a pair of levers for controlling the bucket, a motor for traversing the trolley, means for reversing the motor, a trolley brake, and means for starting, stopping and reversing the motor and for controlling the brake, said means including a movable member so connected to one of said levers as to be operated by the operator while still main taining his hold upon the lever. I

54. In a hoisting apparatus the combination with a winding drum, 'of a drivingmotor therefor, a motor controller, a hand lever connected to operate said controller, asecond" motor embodied in the "hoisting appar-arms, a motor controller, a member to operate said controller mounted to move in a line with the axis of said lever, a hand grip lever pivotally mounted on said controller lever, and connections between said hand grip lever and said axially movable member to cause the movement of the latter.

In a hoisting apparatus, the combination with a hoisting device of a rotary motor for performing one movement of said device, a motor controller, a controlling lever therefor. a second rotary motor for performing a difierent movement of said'device, a motor controller therefor, and means mounted upon said controlling lever for moving said second motor controller.

56. In a hoisting apparatus, the combination with a hoisting device of a rotary motor for performing one movement of said device, a motor controller, a controlling lever therefor, a second rotary motor for performing a different movement of said device, a motor controller therefor, and means mounted upon said controlling lever for moving said second motor controller, said means comprising a pivoted hand grip mounted for movement independent of the movement of said controlling lever.

57. In a hoisting apparatus, the combi nation with a hoisting device of a rotary motor for performing one movement of said device, a motor controller, a controlling lever therefor, a second rotary motor for performing a different movement of said device, a motor controller therefor, and

means mounted upon said controlling lever for moving said second motor controller, sa1d means comprising a member mounted for movement independent of the movement of the controller lever.

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

ALMON E. NORRIS.

W tnesses:

THOMAS B. BoorH, IRVING U. TowNsnND.

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

' Washington, I) 0.

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