US1304359A - Hoisting apparatus - Google Patents

Description

Patented Maj 20,

4 suns-swan 1.

4r .wwm, PETERS c A. E. NORRlS. HOISTI NG APPARATUS.

APPLICATION FILED JULY 11.1916.

Patented May 20, 1919.

4 SHEETSSHEET 2.

Inventor: flZmnENorni/s A. E. NORRIS.

HOISTING APPARATUS.

APPUCATION FILED IULY 11.1915

A V I flaw/0:1 ENorris;

OFFICE.

' ALMON E. NORRIS, OF BROOKLIN'E, MASSACI-IUSETTS.

HOISTING APPARATUS.

Application filed July 11, 1916. Serial No. 108,718.

To all whom it may concern Be it known that I, ALMON E. NORRIs, a citizen of the United States, and a resident of Brookline, county of Norfolk, Commonwealth of Massachusetts, whose post-office address is 47 Silk street, Brookline, Massachusetts, h.ve invented an Improvement in Hoisting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to hoisting apparatus and more particularly to hoisting apparatus of the type employing a grab or bucket carried by a trolley or other traversed support. Apparatus of this type is commonly used for hoisting coal, but may be employed if desired in the handling of other materials. The most effective coal-handling ap paratus .of this class is usually equipped with independently operable motors, either electric or pressure fluid, one motor being employed for operating the bucket and the other motor for operating the trolley, so that the movements of the trolley and bucket, while susceptible of coordination under suitable control, may be quite independent of each other as to time, direction and speed.

One object of the present invention is to provide a simple but effective control for coordinating the movements of the bucket and the trolley, such control being preferably operable by a single individual.

This and other objects of the invention will be best understood by reference to the following description of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims.

In the drawings.

Figure 1 shows in side elevation a hoisting tower embodying one form of the invention;

Fig. 2 is a plan view on a somewhat enlarged scale showing the arrangement of operating levers and connections therefor;

Fig. 3 is a side elevation of the levers and connections Fig. 4. is an end elevation of the same;

Fig. 5 is a plan view partly in section showing the supporting base for the operating levers;

Fig. 6 is a longitudinal, central section through the supporting base;

Fig. 7 is a side elevation of the lower end of the sidewise movable operating lever;

' Specification of Letters Patent.

Patented May 20, 1919.

Fig. 8 is an elevation'in partial, central, longitudinal section showing the trolley drum and the load brake therefor;

Fig. 9 is an end view of the brake member with the trolley drum; and V Fig. 10 is a central, sectional elevation taken through the controlling valve for the brake of the hoisting member.

Referring to the drawings, I have therein shown for illustrative purposes one form of my invention as applied to a hoisting tower l of the steeple type carrying the later ally extending boom 2 which latter herein provides a trackway for the trolley carriage 3 by which the hoisting element, herein represented as the bucket or grab l, is carried. The bucket 4 may be of any suitable or usual construction, being herein shown as of the well-known type employing a hold-' ing rope or cable 5 by which the bucket is suspended and raised or lowered, and the openin or closing rope or cable 6 by which the buc et jaws are opened or closed. These ropes pass upward over and about suitable sheaves on the trolley, thence obliquely upward and over the guide sheaves 8 near the top of the tower and thence downward to the operating room where they pass over and about and are secured to suitable winding drums 9 and 10 (Fig. 2) the former or hoist ing drum serving to control the rope 5, and the latter or opening and closing drum serving to control the opening and closing rope 6.

The trolley with its attached bucket is traversed outwardly along the boom by means of the trolley rope 11, herein fixed to the outer end of the trolley carriage, whence it passes to the end of the boom over the guide sheave l2, and thence back to the tower overthe guide sheave 13, and thence downwardly to the trolley drum' 14. The

trolley drum is driven by anysuitable motor, herein the electric motor 15.

It will be observed that the bucket whether loaded or unloaded exerts an inward pull ropes and 6, tending to traverse the trolley inwardly along the boom toward the tower, the outward movement of the trolley being against this inward pull, but the inward movement thereof being in the same direction as the pull.

Referring first to the device for operating the bucket ropes 5 and 6, the drums 9 and 10 are driven by the bucket motor 16 herein also of the electric type and adapted forcontrol I upon the trolley through the inclined bucket 9 independently of the control of the motor 15. The drums 9 and 10 are journaled loosely on the armature shaft of the motor 16, but may be clutched thereto either separately or together by being forced into engagement with the centrally located clutch member 17 fixed on the armature shaft.

Any suitable clutchbperating devices for clutching the drums to and unclutching them from the motor shaft may be employed, and I have herein indicated sliding collars 18 with operating connections 19 of the general type described in my Reissue Patent No. 12,085, for forcing the drums either sepa rately or together into clutching engagement with the shaft.

The clutch-operating connections 19 for the opening and closing drum 10 are directly and mechanically connected through the link 20, the rocker arm 21, rocker shaft 22, arm 23, and link 2 L with the clutch-operating lever 25 at the operators platform 26. The clutch operating connections 19 for the holding drum 9 are directly and mechanically connected through the link 27, rocker arm 28, rocker sleeve shaft 29, arm 30, and link 31 to the clutch-operating lever 32, the two clutch levers 25 and 32 being located side by side with space for an operators stand between them so that the operator can conveniently grasp the handle of the levers and thereby control the clutches for the drums 9 and 10 while facing and observing the movement of the bucket. Located also within the control of the operator, while in that position and while grasping the clutch levers, are two foot levers, one, 33 of which is connected to operate the controller (conventionally indicated at 34) for the hoist motor, and the other, 35, of which is connected to control a brake 36 for the hoist motor.

To operate the controller 34, the bucket lever 33 is connected thereto through the cable 37, passing over appropriate sheaves, a spring 38 being utilized to move the controller to its inactive position when the foot pressure is relieved. By this means the bucket motor 17 may be started or stopped. If desired the motor connections may be such as to afford regenerative braking when the load is being lowered, according to the principles set forth in my copending application, Serial No. 69879, filed Januar 1916.

The brake 36 for the hoisting motor 1. preferably of the automatic band-brake pat tern of the general type in my prior Patent No. 1,123,786, dated January 5, 1915, and is herein shown as encircling a brake drum on the motor shaft. The construction is such that the. automatic contraction of the band normally prevents movement of the brake drum in a direction which corresponds to the unwinding of the ropes from the drums 9 and 10, but permits movement in the opposite direction. Through the upward move ment of the brake lever 39, which is normally depressed by the spring 40, the band may be freed to permit unwinding movement of the drums when the latter are clutched to the brake drum, it being possible for the operator to, vary the control of the slippage of the drum within the band, and therefore the un winding movement, by means of the up ward pressure against the brake lever 39.

For this purpose the latter is connected to be adjustably raised by a piston (not shown) working in the pressure cylinder 41, pressure being admitted to or exhausted from the lower end of the cylinder through a valve 50 controlled by the foot lever 35 at the operators stand.

The valve 50 (see Figs. 3 and 10) consists of a two-spool piston valve working within a valve casing 50" bolted to the side of the pressure cylinder 4.1. The casing is provided with an exhaust port 51 opening to the atmosphere, and an admission port 52 connected to any suitable source of pressure fluid supply. An intermediate port 53 in the valve chamber communicates with the lower end of the pressure fluid cylinder 41. A run-around passage 54c (indicated in dotted lines in Fig. 10) connects the ports 52 and One end of the valve is opposed by a fixed abutment 55 and a spring 55*, while its opposite end is seated against the actuat- 111g plunger rod 56. The opposite end of the plunger enters the open mouth of sleeve 57 which latter is mounted to slide in a fixed block and has contained within it, the coiled spring 58 abutting one end against the plunger and the opposite end against the closed end of the sleeve.

In the normal position of the valve which is shown in Fig. 10, the sleeve 57 protrudes to its extreme position, allowing the valve to move away from the abutment 55, and opening the cylinder port 53 to the exhaust port 51 so that the pressure cylinder exerts no lifting effort on the brake lever 39. The end of the sleeve 57 projects down at the bottom of the casing over a weighted lever arm 59 (Fig. 3) which latter may be raised to press against the projecting end of the sleeve by means of the cable 60, the latter passing over suitable sheaves and connected to the foot lever 35 at the operators stand. When the foot lever 35 is depressed to lift the weighted arm 59, the spring 58 is compressed, forcing the valve toward its opposite position, whereupon pressure is admitted to the cylinder port 53 from the admission port 52, thereby lifting the piston in the brake cylinder 4-1 and releasing the brake. At the same time pressure fluid is admitted through the run-around passage 54 to the end of the valve, tending to move the valve back against pressure at the end of the valve exceeds that of the spring, the valve starts to close, coming to rest when the pressure of the spring equals that of the pressure fluid on the end of the valve. The strength of the spring and the area of the valve are so selected that the valve will respond to the position of the controlling lever and admit and maintain a predetermined pressure supply in the cylinder 41. Such pressure will be proportionate to the pressure exerted against the spring 58 so that the operators control over the brake band simulates such control when effected through direct mechanical connections.

For the control of the trolley there is preferably provided controlling means at the operators stand and such controlling means or parts thereof, are preferably mounted on one or more of the bucket controlling levers so that the operator can control the movement of the trolley while still maintaining his grasp upon the bucket levers. In the illustrated embodiment of the invention this is accomplished by mounting on one of the levers, herein the holding lever, a connection so related to, the controller for the trolley motor that through the provision of a sidewise rocking movement of the lever the controller may be moved to stop, start or reverse the trolley motor.

To this end the trolley motor controller 61, which may be a master or main controller operating through an intermediate controller if desired, is connected to the coupling 62, the latter mounted on the holding clutch lever 32 in a bifurcated extension 63 (Figs. 6 and 7) of the lower end or base 64 thereof. The clutch lever 32 is mounted to swing forward and backward to control its clutch about a fulcrum which is provided by the sleeve 65 journaled in the fixed supporting block 66, the sleeve being provided with an upwardly and outwardly projecting arm 67 having ears 6868 between which the base piece 64: of the lever is pivoted for sidewise movement.

The opposite end of the coupling 62 is connected to a sliding rod 69 which latter is encircled by the coil spring 70 seated at opposite ends against washers 71 and 72. The washers are seated one in the sleeve 65 and the other in the corresponding sleeve for the lever 25 so that their outward movements are prevented. When the rod 69 is moved endwise, however, either washer may be moved inwardly to compress the spring through the abutting collar 7 3 or 74 fastened to the rod. The spring thus tends to force the rod to. an intermediate or neutral position corresponding to that shown in Fig. 6, whereby the lever 32 is brought to an upright or neutral position and the controller placed in its zero or off position. When the lever is rocked to one side it compresses the spring 7 0 through the endwise movement of the rod 69 and moves the controller to a position in which power is supplied to the trolley motor to wind on the trolley rope. When rocked in the opposite direction the spring is compressed from the opposite end and the controller is moved to a position in which the trolley motor is turned reversely. WVhen the operator relieves'the pressure of his hand tending to rock the lever sidewise, the spring 70 expands and automatically restores the clutch lever t its normal upright position.

The coupling 62 and the rod 69 are preferably substantially coincident with the axis about which fore and aft movement of the clutch lever takes place and the coupling is preferably joined or swiveled to the clutch lever as by means of the pin 75. This and the disposition of the two pivotal axes of the levers at right angles to each other provides that the movement of the lever fore and aft for controlling the clutch is without effect on and independent of the movement of the controller, while, on the other hand, the movement of the lever sidewise for the operation of the controller is without effect on and independent of the movement of the clutch operating connections. The operator is thus enabled to start, stop and reverse the trolley motor by a mere sidewise movement of the leyer 32 and without interference with his control over the clutches.

In the hoisting apparatus of the type shown in Fig. 1, the inclination of the bucket ropes tends constantly to pull the trolley in on the boom. In such an installation, or in any installation where the trolley tends to be pulled in one direction, as for example by the bucket, some accurate and complete control is required to prevent the undue accel eration or the racing of the trolley when released, and to avoid serious accidents which mightresult therefrom. Where two operators are employed, one for controlling the bucket and a separate one for controlling the trolley, the regulation of the inward trolley movement can be readily had through the provision of a mechanically applied brake, the trolley operator customarily using one hand to apply the brake and the other hand to clutch or unclutch the trolley drum from its motor shaft, and a foot lever to control the trolley motor.

In the case of a one-man control, however, it becomes difficult to provide for a suitable regulation of this inward movement of the trolley through a directly and mechanically trolley in both directions under the complete control of the operator at all times, I have provided, in combination with the main controlling elements herein referred to, a device adapted to regulate the inward or gravitational movement of the trolley, as well as the outward movement thereof through the control of the motor control lever alone, thus reducing the trolley control at the operators stand to a single element, to wit: the trolley controller, and permitting all movements of the trolley to be secured through the sidewise rocking movement of this one controlling lever alone.

The device I have utilized in this combition operates on the general principle of a friction load brake between the trolley motor and the trolley drum, and is adapted to resist the inward pull of the trolley on its drum, except as the drum is positively driven under power in a reverse direction by the trolley motor. By this means, the inward or gravitational movement of the trolley will take place only with the reversal of the trolley motor, and will follow the reverse movement of that motor whether fast or slow under complete control of the device which controls the supply of power and the reversing of the motor. Through the use of one controlling element for the motor, there fore, the trolley may be completely con trolled and made to follow automatically the movement of the motor in or out, the tendency to race being automatically checked, and its movement forced to correspond to that of the motor.

The principle of the load brake as applied to the trolley drum will be seen from Figs. 8 and 9, where I have shown oln-e form thereof. Referring thereto, the motor shaft 76 for the trolley motor has fixed thereon the disk-shaped members 77 and 78, between which there are carried the trolley drum 14 and the brake member 79, both susceptible of rotary and longitudinal movement with relation to the shaft 7 6.

The driving member 77 is provided near its periphery with a series of teeth 80, which register with the spaces between similar teeth 81 in the opposing face of the drum 14. Each of the teeth 80 and 81 has one side beveled and the other side straight, so that the movement of the driving member in the direction which tends to draw the trolley out brings the adjacent inclined or beveled walls of the teeth in contact, while movement in the opposite direction brings the straight walls of the teeth in contact, sufli cient play or clearance being provided to back the inclined wall of the tooth 80 away from the adjacent tooth 81.

The intermediate braking member 79 has its end face opposed to a friction surface 82 of the driving member 78, such friction surface being here provided in the form of an annular layer of any suitable friction material secured to the face of the member 78. The braking member 79 at its opposite-side has a conical formation adapted to cooperate with the conical friction surface 83 carried by adjoining ends of the trolley drum 14. The braking member 7 9 is drumshaped, and encircled by the band-brake 8 1, the latter being the type illustrated in my prior patent Reissue 12,0 10, and adapted to be automatically applied to prevent at all times movement of the braking member in the direction of the arrow shown in Figs. 8 and 9, while at the same time permitting winding on movement in the opposite direction.

When it is desired to pull the trolley out,

the clutch lever 32 is moved sidewise in the proper direction to start the motor, and turn the trolley drum 14 in the direction opposite to that of the arrow shown in Fig. 8. This drives the drum from the driving member 77 through engagement between the inclined sides of the teeth 80 and 81, the drum being thereby wedged endwise and into engagement with the braking member 78. The brake 84 on the latter, however, permits the winding on movement of the drum, so that the trolley follows the movements of the motor.

. WVhen the motor is stopped, the pull of the load on the trolley rope tending to turn the drum reversely in the direction of the arrow (Fig. 8), wedges the drum along the shaft and forces the braking member into further contact with both the cone friction 83 and the flat friction surface 82, securely locking the drum to the braking member, which latter is held by this brake against reverse movement. To allow the trolley to run inward under the force of gravitation, the motor is simply reversed by moving the clutch lever 32 in the opposite direction. This backs the wedge-shaped sides of the teeth 80 away from the teeth 81, relieving the wedging effect and permitting the drum to back away from frictional contact with the braking member 79, at the same time relieving the friction between the braking member and the friction surface 82. The drum thereupon follows the movements of the driving member 77, allowing the trolley rope to unwind and the trolley to run in. This continues until the wedge-shaped sides of the teeth 81 overtake the teeth 80, whereupon the further movement of the drum is immediately checked. It therefore follows that the drum is automatically checked by the wedging and braking action, if it starts to run faster than the motor driven member 77, but is always allowed to turn reversely with the reverse movement of such motor driven member.

By this means, I am enabled to completely control the trolley, both during its outward movement when more or less power is required to drive it, and during its inward movement when its tendency is to race, all through the use of one controlling element for the motor, the trolley following automatically the movement of the motor in or out, and the tendency to race being automatically checked to correspond to the motor movement. It will be obvious that the application of this principle to the one-man control of the trolley and the bucket in a hoisting apparatus may be made to installations employing pressure fluid motors, as well as electric motors. The application of the load brake directly to the rope-winding drum, as well as the employment of the wedging teeth 80 and 81 of substantially the same pitch diameter as the friction surface on the braking member, makes this device particularly eflicient.

While I have herein shown and described for the purpose of illustration one specific form of the invention, I wish it to be understood that the same is not limitedto the form and relative arrangement of parts or the specific details of construction herein de? scribed, the same being submitted for illustrative purposes only;

. Claims: l p

1. In a hoisting apparatus a one-man controlling device for effecting the cooperating movements of a hoisting bucket and its traversing support comprising a bucket, a bucket motor, a pair of bucket ropes leading upwardly and inwardly from the traversing support, winding drums and frictions thercfor, friction controlling hand levers directly and mechanically connected to control said bucket frictions, said levers being located side by side with an intermediate space between. for the operator, a traversing support for the bucket, said support being subject to an inward pull through said bucket ropes, a traversing rope, a rope winding drum therefor, a traversing motor for turning thedruni, a loadbrake interposed between the motor and the drum whereby, the drum, while driven positively by the motor to traverse the bucket outwardly is checked as to its movement in theopposite direction and caused to follow the reversemovement of the motor, said load brake comprising a pair of members fixed to the driving shaft and provided one with wedge shaped teeth engaging teeth on the drumand adapted to control the endwise movement of the drum on its shaft, a braking member normally held against movement in one direction but permitted movement in the opposite direction, said member having friction surfaces adapted to be brought into engagement with the second one of said members fixed on-the shaft and also with the drum on the longitudinal movement of the latter, a motor controller, a mounting for one of the clutch levers. permitting sidewise movement of the lever, and

means mounted on said lever andconnected to the motor controller whereby sidewise movement of said lever will serve to start, stop and reverse the trolley motor whereby the cooperating movements of the bucket and its traversed support may be simultaneously but independently controlled by the same operator. i i

. 2. In a hoisting apparatus a one-man controlling device for effecting the'coiiperating movement ofv a hoisting bucket and its traversing support comprising albucket motor, a pair of bucket ropes leading upwardly and inwardly from the traversing support, winding drums and frictions therefor, friction. controlling hand levers directly 'and mechanically connected to control said bucket frictions, said levers being locatedside by side with an intermediate space between for the operator, a traversing support for the bucket, said support being subject toan inward pull through said bucket ropes, a traversin g rope, a rope winding drum therefor, a traversing motor for turning the drum, a load brake interposed between the motor and the drum and so related to the drum that the latter while driven positively by the motor to traverse the bucket outwardly is checked as to its movement in the opposite direction and caused to follow the reverse movement.

of the motor, a motor controller, a mounting for one of the clutch levers permitting sidewise movements of. the lever, and means mounted on said lever and connected to the motor controller whereby sidewise movement of said lever will serve to start, stop and reverse the trolley motor whereby the cooperating movements of the bucket and its traversed support may: be simultaneously but independently controlled by the, same operator. V V

3. In a hoisting ap iaratus a one-man controlling devicefor e ecting the cooperating movement of a hoisting bucket andits traversing support comprising a bucket motor, a pair of bucket ropes leading upwardlyand inwardly from the traversing support, winding drums and frictions therefor, friction controlling hand levers directly and meload brake interposed between the motorand the drum whereby the drum while driven positively by the motor to traverse the bucket outwardly is checked asto its movement in the opposite direction and caused to follow the reverse movement of the motor, said load brake comprising a'pair of members fixed to the driving shaft and'provided one with wedge shaped teeth engaging teeth on the drum and adapted to control the endwise movement of the drum on its shaft, a braking member normally held against movement in one direction but permitting movement in the opposite direction, said member having friction surfaces adapted to be brought into engagement with the second one of said members fixed on the shaft and also with the drum on the longitudinal movement of the latter, a motor controller and means mounted on one of the clutch levers and adapted to be controlled by the operator while holding said levers for starting, stopping and reversing said motor through said controller whereby the cooperating movements of the bucket and its traversed support may be simultaneously but independently controlled by the same operator.

4. In a hoisting apparatus a one-man controlling device for effecting the cooperating movement of a hoisting bucket and its traversing support, comprising a bucket motor, a pair of bucket ropes leading upwardly and inwardly from the traversing support, winding drums and frictions therefor, friction controlling hand levers directly and mechanically connected to control said bucket frictions, said levers being located side by side with an intermediate space between for the operator, a traversing support for the bucket, said support being subject to an inward pull through said bucket ropes, a traversing rope, a rope winding drum therefor, a traversing motor for turning the drum, a load brake interposed between the motor and the drum and so related to the drum that the latter while driven positively by the motor to traverse the bucket outwardly is checked as to its movement in the opposite direction and caused to follow the reverse movement of the motor, motor controlling means at the operators stand connected to the motor controlling means for starting, stopping and reversing the trolley motor, said trolley controlling means being adapted to be controlled by the same operator while holding the clutch levers whereby the cooperating movements of the bucket and its traversed support may be simultaneously but independently controlled by the same operator.

5. In a hoisting apparatus'a one-man con trolling device for effecting the cooperating movement of a hoisting bucket and its traversing support comprising a bucket, a bucket motor, a pair of bucket ropes, the draft on said ropes tending to traverse said support in one direction, a winding drum for the bucket ropes, frictions controlling said drums, friction controlling hand levers located side by side with an intermediate space for the operator, a traversing support for the bucket, a traversing rope, a rope winding drum, a reversing motor for turning the drum to traverse the support against the draft of the bucket ropes, a load brake so related to the drum that the latter while driven positively by the motor to traverse the bucket outwardly is checked as to its movement in the opposite direction and caused to follow the reverse movement of the motor, motor controlling means, and trolley controlling means at the operators stand for controlling the motor, controlling means to start, stop and reverse the trolley motor whereby the cooperating movement of the bucket and its traversed support may be simultaneously but independently controlled by the same operator.

6. In a hoisting apparatus the combination with a bucket of a bucket motor, a pair of bucket ropes leading upwardly and inwardly from the traversing support, winding drums and frictions therefor, friction controlling hand levers, a traversing support for the bucket subject to an inward pull through said bucket ropes, a traversing rope,

a rope winding drum therefor, a reversing motor for turning the traversing drum, a load brake interposed between the motor and the drum and so related to the drum that the latter while driven positively by the motor to traverse the bucket outwardly is checked as to its movement in the opposite direction and caused to follow the reverse movement of the motor, a motor controller for the trolley motor, and means for operating said motor to stop, start and reverse said trolley motor.

7. In a hoisting apparatus, the combination with a trolley of. a bucket sustained thereby, a trolley rope and rope winding drum, a reversing motor for turning said drum, a controller to start, stop and reverse said motor, a load brake interposed between the motor and trolley rope winding drum, and means for controlling the bucket.

8. In a hoisting apparatus the combination with a bucket and controlling means therefor, of a traversing support for the bucket, said support tending constantly to be moved in one direction, a traversing motor for moving the support in the opposite direction, a load brake interposed between the motor and the support and so related to the latter that the said traversing support is stopped and caused to follow the movement of the motor when the latter is reversed, and means for starting, stopping and reversing said traversing motor.

9. The combination with a bucket and bucket ropes and controlling devices therefor including a pair of controlling levers, of a traversing support for said bucket tending constantly to be moved in one direction, a reversing motor for moving said traversing support, a load brake interposed between the motor and the support whereby the latter may be moved positively by the motor in one direction while its normal tendency to move in the opposite direction may be checked and it may be caused to follow the reverse power driven movement of the motor, a

motor controller for starting, stopping and "with the trolley motor, and means for controlling said motor.

11. In a one-man controlling devlce for a holsting devlce, the combinatlon wlth a bucket of bucket ropes and a pair of friction controlling levers therefor arranged side by side with an operators stand between the same, a traversing support tending constantly to move in one direction, a reversing motor for moving said support in-the opposite direction, a device to hold said support against movement in said opposite direction except when positively driven by said motor, but causing it to follow the reverse'movement of themotor in said opposite direction, a controllerfor said motor, and means for operating said controller including a member connected to a bucket friction lever at the operators stand.

12. In a one-man controlling apparatus for hoisting machinery, the combination of a bucket, a pair of controlling levers therefor arranged at the operators stand, a traversing sup-port for the bucket, a traversing motor therefor, a load brake for the motor,

controlling means for starting, stopping and reversing said motor, and means at the operators stand adapted to be controlled by the same operator while holding said bucket controlling levers for'operating said trolley controller.

' 13. In a hoisting apparatus a one-man :controlling device for effecting the cooperating movement of a hoisting bucket and a traversing support comprising a bucket, a bucket motor, a pair of bucket ropes, winding drums and frictions therefor, friction controlling hand levers located side by side with an intermediate space for the operator, a traversing support for the bucket, said support being constantly impelled in one direction, a traversing rope and a rope winding drum therefor, a traversing motor for turning the drum, means for operating the trolley in either direction, and

means for controlling said trolley operating means including a member connected to one of said friction levers and operated by sidewise movement thereof.

14. In 'a hoisting apparatus a one-man controlling device for effecting the cooperating movements of a bucket with a traversing support, a bucket, a pair of bucket controlling levers, a; traversing support for the bucket subject to a. constant pull in one direction, a traversing motor for moving said support in the o posite direction, and trolley controlling means including a member connected to one of said bucket levers and operated by sidewise movements thereof.

15. In a one-man controlled device for hoisting apparatus thecombination with a bucket and bucket operating levers of a traversing support for a bucket subject to a pull of the bucket tending to move the support in one direction, a motor for moving the support in the opposite direction, means for automatically checking the movement of the support in the direction of bucket pull, I

and means for controlling the trolley movement including a device adapted to bemoved by the sidewise movement of onerof said bucket operating levers.

16. In a oneman controlled hoisting apparatus, the combinationwith a bucket of a trolley, a trolley rope, a rope windingdrum, a driving motor for the drum, and a load brake interposed between the motor and the drum. L r

17. In a one-man controlled hoisting apparatus, the combination with a bucket element of a trolley element, a rope winding drum forone of said elements, a drum shaft,

and load brake mechanism mounted on the drum shaft.

18. Ina one-man controlled hoistingapparatus, the combination with a bucket element of a trolley element,'a rope winding drum for one of said elements, a driving member therefor having drivlng teeth interlocking with teeth on the drum, said drum being moved axially when turned reversely by its rope more rapidly than the movement being'moved' axially when turned reversely by its rope more rapidly than the movement 'of the driving member, and braking means to check the-unwinding movement of said drum when moved axially, sald means ncludmg a member adapted to rotate with "said driving member and'a'braking member "intermediate said member and said drum' and presentlng friction surfaces adapted to engage with corresponding friction surfaces on both said member and said drum when the latter is moved axially.

paratus, the combination with a bucket element, of a trolley element, a rope winding drum for one of said elements, a driving member therefor, and a load brake of which said winding drum forms a part.

21. In a one-man controlled hoisting apparatus, the combination with a bucket element and trolley element of a load brake for one of said elements, a driving member, a driven member, and a braking member with which said driven member is frictionally engaged, said driving member and driven member having interlocking wedge shaped teeth at approximately the same radial distances from the axis of rotation as the friction surfaces are located.

22. In a one-man controlled hoisting device the combination with a trolley and a bucket of a controlling lever for jointly controlling the movements of the trolley and bucket, said lever having both a forward and a lateral movement, and a centering device tending normally to return said lever sidewise to a neutral position,

23. In a one-man controlled hoisting apparatus, the combination with a trolley and a bucket of a OOIltIOlling lever for jointly controlling the movements of the trolley and bucket, said lever having a movement forward and backward about a principal fulcrum, a second fulcrum for said lever by which sidewise movement is permitted in either direction, and a spring centering device normally tending to bring said lever to its neutral position about said second fulcrum.

24. In a one-man controlled hoisting apparatus, the combination with a trolley and a bucket of a controlling lever for jointly controlling the movements of the trolley and bucket, said lever having a movement forward and backward and having also a secondary controlling movement sidewise in either direction and a spring centering device tending to hold said lever against sidewise movement.

25.-In a hoisting apparatus, the combination with a bucket of a traversing support on which the bucket is carried, a controlling lever for controlling both the bucket and the trolley, said lever being adapted to be moved forward and backward for the control of one element or to be rocked sidewise in the other direction for the control of the other element, and a centering spring tending to oppose sidewise movement and maintain the lever normally in a neutral position.

26. In acne-man controlled hoisting apparatus, the combination with a trolley and a bucket of a controlling lever therefor having a main fulcrum about which said lever is movable, a joint in said lever between the handle thereof and the main fulcrum providing a fulcrum for sidewise movement a main fulcrum about which said lever is movable, and a secondary fulcrum at right angles thereto at one side of the main fulcrum, said lever being movable sidewise about the said secondary fulcrum, a connection to said lever at substantially the axis of the main fulcrum, and a spring for maintaining said lever at substantially right angles to said main fulcrum.

28. In a one-man controlled hoisting apparatus, the combination with a trolley and a bucket, of a controlling lever for jointly controlling the movements of the trolley and bucket, the latter having a main fulcrum about which said lever is movable, and a secondary fulcrum at right angles thereto at one side of said main fulcrum, said lever being movable sidewise about the said secondary fulcrum, a connection to said lever at substantially the axis of the main fulcrum, an axial rod secured to said main lever, and a spring adapted to be flexed by the movement of said lever sidewise in either direction about said secondary fulcrum.

29. In a one-man controlled hoisting apparatus, the combination with a trolley and a bucket of a controlling lever for jointly con trolling the movements of the trolley and bucket, the latter having a main fulcrum about which said lever is movable, and a sec ondary fulcrum at right angles thereto at one side of said main fulcrum, said lever being movable sidewise about the said secondary fulcrum, a connection to said lever arranged substantially axially of said main fulcrum to be moved by said sidewise movement, a lateral rod connected to said lever, a spring encircling said rod, and means carried by said rod for compressing said spring in either direction when said lever is rocked sidewise in either direction.

30. In a hoisting apparatus, the combination with a bucket, bucket ropes and rope winding drums, a driving member and controlling devices for the bucket including a friction for each drum, and means for frictionally clutching either drum at will to said driving member, a brake controlling the reverse movement of the driving member, and means for applying or releasing said brake at will.

31. In a hoisting apparatus, a one-man controlling device for effecting the cooperating movements of a hoisting bucket and its traversing support, comprising a bucket, a bucket motor, a pair of bucket ropes, the draft on said ropes tending to traverse said support in one direction, Winding drums for the bucket ropes, frictions controlling said drum friction, controlling hand levers located side by side with an intermediate space for the operator, a traversing support for the bucket, a traversing rope, a rope Winding drum therefor, and a single controlling member mounted on one of the clutch levers and connected to control the movement of the traversing support both with and against the draft of said ropes.

32. In a hoisting apparatus, a one-man controlling device for effecting the cooperating movements of a hoisting bucket and its traversing support, comprising a bucket, a bucket motor, a pair of bucket ropes, the draft on said ropes tending to traverse said support in one direction, Winding drums for the bucket ropes, frictions controlling said drum friction, controlling hand levers located side by side With an intermediate space for the operator, a traversing support for the bucket, a traversing rope, a rope- Winding drum therefor, and a single controlling member connected to control the movement of the traversing support both with and against the draft of said ropes.

In testimony whereof, I have signed my name to this specification.

ALMON E. NORRIS.

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

It is hereby certified that in Letters Patent No. 1,304,359, granted May 20,

1919, upon the application of Almon E. Norris, of Brookline, Massachusetts, for an improvement in Hoisting Apparatus, errors appear in the printed specification requiring correction as follows: Page 8, line 61, claim 26, strike out the Word therefor and insert the Words for jointly controlling the movements of the trolley and bucket, said lever; same page, line 73, claim 27, strike out the Words hoisting device; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.

Signed and sealed this 17th day of June, A. D., 1919.

[SEAL.] J. T. NEWTON,

Commissioner of Patents.

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