US1181981A

US1181981A - Hoisting apparatus.

Info

Publication number: US1181981A
Application number: US48388809A
Authority: US
Inventors: Almon E Norris
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-03-17
Filing date: 1909-03-17
Publication date: 1916-05-02
Anticipated expiration: 1933-05-02

Description

A. E. NORRIS.

HOISTING APPARATUS.

APPLICATION r1150 MAR. 11. 1909.

Patented May 2, 1916.

6 SHEETS-SHEET1 fllrnan .jvorzals, by M All Witnesses A. E NORRIS.

HOISTING APPARATUS.

APPLICATION FILED MAR. I7, 1909.

Patented May 2, 1916.

6 SHEETS-SHEET 2.

In venZ'or fllmonl vorl'ls {LIL A. E. NORRIS.

HOISTING APPARATUS.

APPLICATION FILED MAR. 17. 1909.

Patented May 2, 1916.

nil-i 6 SHEETSSHEET 3.

Wz'lnessee Invenlor Alrnon EMrzzie.

by 2W7 A. E. NORRIS.

HOlSTING APPARATUS.

APPLICATION FILED MAR. 17. 1909.

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HOISTINU APPARATUS.

APPLICATION FILED MAR. 17. 1909.

Patented May 2, 1916.

6 SHEETS-SHEET 5.

Inventor .fllrnon EJVbrr/is,

Wtlnesses A. E. NORRIS.

HOISTING APPARATUS.

APPLICAHON FILED MAR. 11, 1909.

Patented May 2, 1916.

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ALMON E. NORRIS, OF CAMBRIDGE, MASSACHUSETTS.

HOISTING APPARATUS.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed March 17, 1909. Serial No. 483,888.

T 0 all 1c hom it may concern:

Be it known that I. ALMoN E. NORRIS, a

citizen of the United States. residing at Cambridge. in the county of Middlesex and State of Massachusetts. have invented an Improvement in Hoisting 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 apparatus for hoisting or hauling heavy loads. being more particularly concerned with means for rendering such apparatus readily controllable by the operator.

In the described embodiment of my invention. the same is shown as applied to a conveying bridge employing a trolley on which is sustained a clam-shell bucket or grab. the apparatus being provided with means whereby a single attendant can control the travel of the trolley and the various requisite movements of the bucket thereon. It is to be understood. however. that the invention as to many of its features is applicable not only to hoisting devices employing the clam-shell buckets, but other hoisting elements as well, and is also applicable to towers and other trolley-equipped installations quite different in their construction from that herein shown.

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 articularly pointed out in the appended c aims.

In the drawings,Figure 1 is a side elevation and partial section of the operating room and principal controlling parts of a bridge equipped with one form of my invention; Fig. 2 shows in plan the principal operating parts illustrated in Fig. 1; Fig. 3 is a diagrammatic representation of an arrangement of controlling ropes or cables; Fig. 4 is a central longitudinal section in elevation, and on anenlarged scale, showing the mounting of the clutch levers; Fig. 4 is a detail in side elevation; Fig. 5 is an elevation on an enlarged scale showing in section the counter-weight controlling valve and its relation to the holding clutch-lever; Fig. 6 is a plan of the base on which the said valve rests; Fig. 7 is an elevation showing the piping connections between the valve chamber and the pressure cylinder; Fig. 8 is an elevation in partial section showing the winding drums for the bucket; Fig. 9 is a sectional elevation on an enlarged scale of the valve which controls the trolley-engine'reversing gear; Fig. 10 is a front elevation of the connections for controlling such valve; Fig. 11 is a detail in side elevation showing said connections; Fig. 12 is a section in plan on the line 1212 in Fig. 9; Fig. 13 is a section in elevation taken transversely through the counter-weight and its supports; Fig. 14 is a front elevation in partial section showing the same counter-weight; Fig. 15 is a section in plan showing the counter-weight support and taken on the line 15-15 in Fig. 14, and Fig. 1G is a detail of the trolley engine reversing gear.

To illustrate my invention I have shown the same applied to a trolley-equipped bridge employing well-known mechanisms. As before stated, however, the application of the invention is not limitedto this type of hoisting apparatus or to an apparatus employing the elements which are herein set forth. Many of the operating and controlling elements are well-known and understood by those skilled in the art and require no detail description, but the general arrangement of the operating parts of the hoisting apparatus may be briefly described as follows:

Referring to Fig. 1, the bridge structure is provided with a track-way 1. on which is adapted to run the trolley carriage 2, supporting a bucket 3 of any well-known construction. The track-way is shown in cross-section only in Fig. 1, but it will be understood that it extends lengthwise the bridge structure and the latter may be of any desired length. In this particular form a duplicate trackway is employed at the opposite side of the structure, for which a similar operators equipment is provided, but the latter is not shown and requires no further mention.

As is usual in clam-shell buckets, the

bucket herein is provided with an opening and closing rope or cable 4. by which the jaws may be opened or closed. Referring to Fig. 3. such cable passes from the winding drum 5 over and about suitably positioned guide sheaves 6 and T, thence to a sheave 8 at the end of the trackway. and thence to the trolley and the bucket. From the bucket it passes again to the trolley and thence to a fixed point 5) at the opposite end of the track-way. There is also provided a hoisting or holding cable 10, which passes from the holding drum 11 over and about the guide sheaves 12 and 13 to the guide sheave 14 at one end of the trackway. Thence it passes to the trolley and the bucket, and thence to the fixed point 15 at the opposite end of the trackway. The use of operating ropes or cables having this general arrangement is well-known and requires no further description, it being understood that by proper control of the winding-drums the bucket may be raised or lowered and the jaws thereof opened or closed at will.

To traverse the trolley, there is provided the endless trolley cable 16 which is controlled by the trolley drum 17. From the trolley drum the cable 16 passes over guide sheaves 18 and 19, the two branches thereof then separating and leading to opposite ends of the trackway over and about the guide sheaves 20 and 21 respectively, and thence back to the trolley to which the ends are secured. By turning the trolley drum in one direction or the other, the trolley may be moved in either direction along the trackway.

In the embodiment of my invention here shown a counter-weight 22 is employed for counterbalancing more or less the weight of the empty bucket. This counterweight is supported upon a sheave 23, hung in a loop of the cable 24. One end of the latter is secured to a fixed part of the structure and the opposite end passes over the guide sheaves 25 and 26 to the holding drum 11. This counterweight cable may be an extension of the holding cable, or may be a separate cable length, but in either case leaves the holding drum in an opposite direction from the holding cable so that as the one winds on the other unwinds.

Any desired means may be employed for driving the bucket winding-drums, but herein the same are driven from the main shaft 27 of the upright two-cylinder steam engine 28. the latter being shown in elevation in Fig. 1, and partially in plan in Fig. 2. Both drums (see Fig. 8) are mounted loosely upon the shaft 27, but are adapted to be clutched to or unclutched therefrom at will by any well-known form of friction clutching device. To this end they are provided with

friction members

29 and 30 respectively. adapted to engage separately or together with the central friction driving member 31. the latter being keved or otherwise secured to the shaft.

The frictions are applied in any suitable manner. as. for example. by the well-known clutch-operating screws 32. of the type described in my prior Reissue Patent No. 12.085. These screws are .turned for controlling the frictions by means of lever and link connections extending to the operators platform as follows: The friction screws for the holding drum 11 are connected (see Fig. 1) to the upwardly extending link connection 33, which latter is connected to the horizontally extending rock shaft 34 by the lever arm 35. The rock shaft in turn is connected by the arm 36 and link 37 to an arm 38 depending from the holding clutch lever 39 at the operators platform 40. The friction screws for the opening and closing drum 5, on the other hand, are connected by the link connection 41 and the lever arm 42 to the horizontal rock shaft 43, and thence through the lever arm 44 and link 45 to a depending arm 46 (see Fig. 4) secured to the opening and closing friction lever 47. 'lhrough these connections the operator as he faces the window 48 of the operating room can apply the frictions at will by pushing the levers forward and can thereby exercise delicate control over the direction and speed of travel of the bucket cables.

The throttle valve for the bucket engine is represented at 49. This is provided with an operating lever 50, normally drawn down to a closed position by the spring 51, but adapted to be opened by the rope or cable connection 52 which extends upward over suitable guiding sheaves 53. 53, and thence downward to be operated by the foot lever 54. which latter is conveniently located to be moved by the operator without interfering with his control over the bucket friction levers.

In the. illustrated embodiment of my invention I have provided means whereby the operator while still retaining his grasp upon the friction levers 39 and 47 can control completely the movements of the trolley drum. This result is secured in the present instance by providing grasping or other independegtly movable manually operated devices upon one or both the friction levers through the manipulation of which the operator can start. stop. or reverse the trolley drum. As herein illustrated. the latter is also driven by an upright two-cylinder steam engine 55. provided with a reversing gear and the grasping devices referred to serve to start. stop. or reverse this engine by control exercised over the reversing gear thereof it is to be understood. however,

that so far as the broad aspect of my invention is concerned, the control thus exercised may be secured in other ways and other forms of motive power or motors may be employed.

Referring more particularly to Figs. 1, 2 and 4. the

clutch levers

39 and 47 are keyed respectively to the

sleeves

56 and 57. The latter carry the depending

levers

38 and 46 respectively, and are journaled in the frame piece 58 which is secured to the floor of the operators cab. To control the trolley the opening and closing lever 47 is provided at its handle end with a pivoted hand-grip 59, which is connected by the link 60 to the bell-crank lever 61, the latter being jointed to a sleeve 62 held against endwise movement only between two fixed collars on the actuating rod 63 to which it is adapted to impart longitudinal movement. The latter is preferably mounted coaxially with the clutch lever so that the movements of the latter in no wise interfere with the control exercised over the rod by the hand-grip. Preferably the holding lever 39 is also provided with a similar handgrip 64 connected by the link 65, bell-crank lever 66, and sleeve 67, to the opposite end of the same actuated rod 63, one hand-grip acting to move the rod in one direction, and the other in the opposite direction.

Therod 63 is preferably yieldably held in a central or neutral position by means of the coiled spring 68 having its opposite ends bearing against the washers 69. The latter are of greater diameter than the openings in the

sleeves

56 and 57, and the rod has pinned thereto collars 70, of lesser diameter than the said openings. The rod, therefore, is normally held in the position shown, but may be moved in either direction against the yielding resistance of the spring.

The movements of the actuating rod in one direction or the other are caused to control the reversing gear for the trolley engine, preferably through the use of auxiliary pressure fluid by the following means: Referring to Figs. 1 and 16, the trolley engine 55 ,is provided with an ordinary form of reversin gear, having the link block 71 and the lm 72, the latter being connected to the reversing lever 73 so that it can be thrown to either extreme position for driving the en' ine in one direction or the other,

'or to any intermediate position, including a mid-position, whereat the engine is stopped.

The reversing lever 73 is connected by a lever arm 74 toja tumblershatt 75, supported in -,bearings at one side of the engine frame, and such tumblershaftin turn is connected to the arm 76 which has jointed ,connection to a suitably guided cross-head .77. The latter is attached to the end of a piston rod7 8 connected to a piston 79 working within the engine controlling cylinder 80. Through the provision of

pipes

81 and 82, leading to the top and bottom of said cylinder, respectively, pressure fluid may be admitted to move the piston and control the reversing gear of the engine.

The

pipes

81 and 82 extend to the operators platform where they have connection with a valve controlled by the hand-grips previously described. Referring more particularly to Figs. 9 to 12 inclusive, the

pipes

81 and 82 enter the valve casing 83 and are connected respectively to

ports

84 and 85. Steam or other pressure fluid passes through the supply pipe 86 which enters one end of the valve casing and has connection with a central port 87. An exhaust pipe 88 is also connected to the casing and communicates with a space 89 surrounding the valve chamber. The valve 90 is of the sliding piston type, provided with two spools which move within an inner valve box 91 so that, when the valve is elevated, pressure fluid is admitted to the port 84' and thereby applied to the top of the engine controlling cylinder 80, while at the same time the bottom of said cylinder is opened to the exhaust through the port 85. On the other hand, a depression of the valve serves to reverse the pressure conditions in the engine controlling cylinder and lift the engine controlling pis ton.

Referring to Figs. 10 and 11 the actuating rod 63 is connected to the lever arm 92 and rock shaft 93 and thereby through the lever arm 94 to the upright connecting rod 95. The latter in turn has a jointed connection to the valve stem 96 so that when the hand-grip on the holding lever is squeezed the valve is drawn down, and when the hand-grip on the opening and closing lever is squeezed the valve is lifted.

The foregoing connections serve to throw the reversing gear in one direction or the other by movement of one of the hand-grips. In order that the reversing gear may be moved to positions intermediate its extreme positions and that such lesser movements may follow proportionately the movements of the hand-grip, connections are arranged whereby the valve is returned to its normal or inactive position (shown in Fig. 9) when the reversing gear has moved an amount proportionate to the movement of the particular hand-grip. then compressed. To this end the connecting rod 95 (Fig. 10) is jointed to the valve stem by means of a floating lever 97, the opposite end of which is. jointed to a depending connecting rod 98. This connecting rod is mechanically connected to the tumbler shaft 75 at. the engine by the following connections. The upper end of the rod 98 is connected to one arm of the bell-crank lever 99, which in turn is jointed to the rod 100, the latter extending to a point above the engine. At such point it is connected to one arm of the bell-crank lever 101, the remaining arm being jointed to the depending connection 102, which latter is jointed to the arm 103 directly con nected to the rock shaft 75.

The described connections act to restore the valve to its inactive position as soon as the reversing gear link moves the desired amount. For examp le,if the connecting rod 95 is moved to draw the valve down part way only, pressure fluid is thereby admitted to the bottom of the engine controlling cylinder and the tumbler shaft turned lefthandedly (as viewed in Fig. l) to move the link. This in turn moves the return connection 102, and through the described connections the rod 98 at the valve is raised, moving the valve back toward its initial position. The relation of the parts is such that when the link controlling lever 73 has executed a movement which bears the same proportion to its full or extreme movement as does the movement given the hand-grip to its extreme movement, the valve 90 will have been moved back to close both

ports

84 and 85, and the controlling piston 79 and the reversing gear link will be maintained in the position assumed until further movement of the hand-grip. Any departure from such position due to leakage or condensation of pressure fluid will cause the return connections and the valve 90 to move as again to admit pressure fluid to the cylinder to restore the piston to its former intended position. As will be evident the described controlling mechanism not only serves to reverse the engine but to vary the speed thereof and hold the engine speed at any desired point, all through the movements of the handgrips.

The trolley winding-drum 17 is preferably fixed to the trolley engine shaft 101 so that the operator, by manipulating the handgrips, can delicately control the movements of the trolley winding-drum in either direction. Such manipulation moreover in no wise interferes with his complete control at all times over the friction levers.

While the described reversing gear can be moved at will irrespective of the engine throttle, and its connections therefore, place the operator in complete control of the engine, in the illustrated embodiment of my invention I have also provided a throttle valve 105 for throttling the trolley engine, such throttle being preferably so arranged that it remains closed until the reversing gear is moved thereby permitting the movement of the latter to take place while the steam is still shut oil and rendering such movement easier. Such throttle may be controlled quite independently of the reversing gear but herein the same is preferably connected to be moved automatically through the connection controlling the reversing gear. To this end the throttle lever is connected by the link 106, bell-crank lever 107, link 108, and lever arm 109 to the rock shaft 75, so. that such throttle valve is also .controlled by movement of the hand grips. In the mid, or normal position of the link, as represented in Fig. 1, throttle valve 105 is closed, but when the link is moved in either direction the throttle valve is subsequently opened to a degree suflicient to supply the steam required for the intended speed.

In addition to the automatically controlled throttle valve 105, there is also provided the main throttle or cut-out 110, which is connected by the rod 111 to a hand lever 112, fulcrumed directly over the position assumed by the operator, so that steam or other motive fluid may be cut off or supplied to the trolley engine at will through movement of such hand throttle lever.

In order that the trolley and trolley drum may be held positively against movement when the engine is stopped and power cut off from the same at the mid-position of the link, braking or other equivalent means are preferably provided which, if desired, may be automatically applied to hold the drum fixed under such conditions. Any suitable means may be employed for this purpose, but herein the winding-drum (see Figs. 2 and 16) is provided with a brake band 200, the ends of which are fastened to a brake lever 201, fulcrumed upon the brake shaft 202. In the present instance, the brake preferably acts when applied to hold the drum against a pull in either direction. The outer end of the lever herein is secured to a link 203, which latter has jointed attachment to the arm 204 depending from the tumbler shaft 75. The arm 204, link 203, and lever 201, are so related that when the reversing gear link is in its mid-position and the engine stopped, the link 203 and the arm 204 are in substantial alinement, causing the brake lever to be thrown and the brake applied. With the tumbler shaft 75 turned in either direction from this mid-position, the arm 204 acts to draw up the link and brake lever and release the brake. This provides means, therefore, whereby the brake is automatically applied and released with the movement of the reversing gear and under the control of the gras ing devices on the clutch levers.

hen the bucket, with its jaws open, drops upon the coal or other material to be lifted, it is necessary to lift the counterweight 22 if the full weight of the bucket is to be availed of for sinking it into the coal. For this purpose provision is made whereby at the time the opening and closin cable is wound in to close the jaws, the ho ding drum may be turned in a reverse direction (preferably, at a lower rate) to lift the counter-welght and pay out the holding cable. For this purpose herein a reversing gear is employed for the holding drum, which is automatically thrown into operation through 'the employment of a pressure controlled device, the latter being controlled by the movement of the holding lever away from its active position.

So long as the rotatable member 115 is free to rotate, it turns idly about the shaft 27, but, when held fixed, it causes the latter to drive the drum through the pinions 114 in a direction opposite to that of the rotation of the shaft and at a reduced speed. The described reverse gearing is thrown into operation by applying to the perimeter of the rotatable member 115, a brake band 117, which latter is controlled by the brake lever 118. The end of the lever is attached to a cord or cable 119 which extends up to the top of the operators cab, over and about guide sheaves 120, and thence down toward the floor of the operators platform, where it is connected to a. piston 121 working within a controlling cylinder 122. The brake band is normally held free from the drum by the spring 123, the piston then being in the to of the cylinder 122. To the top of the cy inder there is connected the admission pipe 125 controlled by a suitable controlling valve 126 whereby pressure to any required amount may be admitted to the cylinder to apply the brake with any suitable degree of pressure. The bottom of the cylinder is connected to the drain pipe 124*, the latter communicating with the exhaust pipe 124.

Referring particularly to Figs. 5 and 7, the controlling valve 126 is a two-spool piston valve, working within the valve casing 127. The valve casing is provided with an exhaust port 128 connected with the atmosphere through the exhaust pipe 124, and an admission port 129 which is connected to a suitable source of pressure fluid supply. The cylinder pipe 125 is connected with an intermediate port 130. In addition to this there is also an auxiliary port 131 opening into the rear end of the valve chamber and connected with the cylinder port by the runaround passage 132 (see Fig. 6). At its rear end the valve is opposed by a fixed abutment 133, while its opposite end is engaged by the actuating plunger rod 134. The opposite end of the plunger rod enters the open end of a sleeve 135, which latter is mounted to slide in the fixed block 136 and has contained within it the coiled spring 137 abutting, one end against the plunger rod, and the otherendagainst the opposite closed end of the sleeve.

The valve plunger rod and sleeve are located in alinement with the holding clutch lever 39, and the latter has fixed thereon the carefully adjusted cam member 138, which is withdrawn from the sleeve when the holding lever is moved forward and the clutch applied, and also when the clutch lever is moved to its normal position to free or release the clutch. If the holding lever, however, is drawn back from its normal position, the cam member 138 is adapted to engage the projecting end of the sliding sleeve 135 and force. the latter backward in the block 136, compressing the spring 137 and thereby moving the valve 126. As soon as the valve moves, pressure fluid asses from the port 129 to the port 130 an enters the cylinder 122 to appl the-brake band and lift the counter-weig t. The rear spool of the valve is exposed to an end pressure equal to the pressure admitted tothe ort 130 and to the pressure cylinder 122. uch pressure, therefore, tends to move the valve back and as soon as the pressure at the end of the valve exceeds the pressure of the spring the valve will move to its neutral position shown in Fig. 5. The strength of the spring and the area of the valve are so selected that the valve will respond delicately to the position of the controlling lever and admit and maintain a predetermined pressure supply in the pipe. Such pressure will be proportionate to the ressure exerted against the spring 137, an the operator will therefore press against the lever with a force at all times substantially proportionate to, although it may be considerably less than the real pressure in the operating cylinder. In other words, his control over the brake band is under substantially the conditions which would obtain were the latter connected directly by mechanical connections to the clutch lever. If the pressure in the operating cylinder tends to rise above or fall below the predetermined point, the op osing efforts of the pressure at one end 0 the valve, and the compressed spring at the other will act to regulate the position of the valve and corapply the brake band with varying degree of pressure and there maintain it so that when the jaws are closing the holding drum can be turned to just the extent necessary to secure the required conditions of slack in the holding rope.

Preferably suitable means are provided such as the automatic brakes 139 applied to suitable brake drums at the end of the bucket engine shaft 27 to prevent the reverse movement of the engine shaft. Such brakes may be of any well-known type, such as that shown in my prior Reissue Patent No. 12,040.

The operation of the hoisting apparatus described is as follows: Starting with the empty bucket lifted and ready to be dropped both clutch levers are thrown back to drop the bucket. When the bucket falls upon coal the opening and closing lever is thrown forward to wind in the opening and closing cable, and the hoisting lever is thrown back to apply the brake band for the reversing gear, and, by lifting thecounter-weight more or less, to regulate the slack in the holding cable as the bucket sinks. When the bucket jaws are closed the holding clutch lever is thrown forward to release the brake band and throw in the friction. With the bucket engine throttle open, the bucket is then lifted. When the bucket is lifted the throttle is closed and one of the hand-grips moved to start up the trolley engine and traverse the trolley. With the trolley properly positioned, the opening and closing clutch lever is moved to open the bucket jaws, whereupon the remaining hand-grip may be moved to reverse the movement of the trolley and return the latter to its original position.

In the described apparatus I have provided means to prevent damage in the event that the supporting cable for the counterweight breaks. To this end, safety devices are provided upon the counter-weight which, if the cable breaks, act to catch and hold the counter-weight against falling. Referring to Figs. 13 to 15, the supporting sheave 23 for the counter-weight is journaled upon a shaft 140, the opposite ends of which are jointed to pairs of links 141. The lower ends of the links are secured to arms 142 keyed or otherwise fastened to the rock shaft 143, the latter carrying at their outer ends flanged cam wheel grips 144, which may be turned to engafge and grip tightly with the flanged body 0 the upright counter-weight guides 145. So long as the sheave is supported by the counter-weight cable, the rock shafts are turned to free the grips by means of the heavy coiled s rings 146. Thelatter have their lower en s fastened to arms 147 secured to the rock shaft and their upper ends to a fixed part of the surrounding casing 148. The supporting shaft 140 for the sheave is capable of slight vertical movement in slots 149, formed in the casing, so that, when suspended by the sheave, the links 141 are drawn upward turning the rock shafts and distending the coiled springs. In this position the cam grips are free. If the cable shouldbreak, however, the springs instantly contract, turning the rock shafts to draw down the shaft 140 within the slots 149 and applying the cam grips to the supporting members 145. The springs are of such strength and the cams s0 proportioned that they quickly grip the supports and prevent dropping of the weight if the supporting cable gives way.

While I have herein shown and described for illustrative purposes the details of one specific form of my invention, it is to be understood that my invention is not limited either to the application here made thereof nor to the details of construction or form or relative arrangement of parts, but that extensive deviations may be made therefrom without departing from the spirit of the invention.

Claims:

1. In a hoisting apparatus the combination with a bucket, of a trolley on which the same is sustained, a friction clutch and clutch lever directly connected thereto for controlling the bucket, a bucket engine, a trolley engine, a reversing device for the trolley engine, and a grasping device upon the friction lever for controlling said trolley engine reversin device.

2. In a hoisting device the combination with a trolley, a bucket sustained thereby, a bucket friction, a friction controlling lever for the bucket, a trolley engine, reversing means for the engine, and a grasping deviceon the controlling lever for controlling said reversing means.

3. A hoisting apparatus having a ropewinding drum, an engine connected to turn the latter, an engine reversing device for driving the engine in either direction, a controlling lever for said hoisting apparatus and means separately movable upon said lever for controlling said engine reversing device.

4. In a hoisting apparatus the combination with a winding-drum, of an engine for driving the latter, a reversing gear for said engine, a plurality of controlling levers for said hoisting apparatus and grasping devices one upon each lever and mounted for movement independently thereof, said grasping devices being connected to operate said reversing gear, one for one direction of engine movement and the other for the reverse direction.

5. In a hoisting ap aratus the combination with a bucket, o a trolley, a controlling lever for the bucket, a trolley winding drum and trolley engine for driving the same, an engine reversing gear, a grasping device upon said controllln lever and movable independently thereo said grasping device acting to move said reversing gear proportionately to the movement thereof.

6. In a hoisting apparatus the combination with a bucket, a trolley, a holding cable and an opening and closing cable for the bucket, a pair of winding-drums together with clutches and clutch levers for controlling said cables, an engine for operating said winding drums, a trolley engine, an engine reversing device and means on one of said clutch levers for controlling said reversing device.

7. In aihoisting apparatus the combination with a bucket, a trolley, a holding cable and an opening and closing cable therefor,

a pair of winding-drums together with clutches and clutch levers for controlling said bucket, a trolley engine, an engine reversing device and grasping devices mounted one upon each of said clutch levers for jointly controlling said reversing device.

8. In a hoisting apparatus the combination with a bucket, a trolley, a trolley winding-drum and trolley engine, a reversing device, a throttle, a clutch lever for the bucket and grasping means upon said lever for controlling both said reversing device and said throttle.

9. In a hoisting apparatus, the combination with a bucket, of an opening and closing cable, a holding cable, winding drums for said cables, frictions and friction levers for the winding drums, a counterweight for the bucket, devices for positively lifting the counterweight when desired through rotation of the holding'drum, and pressure fluid means controlled by a friction lever for initiating and automatically exercising a continuing manually governed control over such rotation.

10. Ina hoisting apparatus, the combination with a trolley, a bucket, an opening and closing cable, a holding cable, friction clutch levers therefor, a counterweight for the holding cable, a winding drum controlled by the holding clutch lever, reverse gearing for turning the holding drum to lift the counterweight, and pressure fluid means controlled by the holding friction lever for throwing said reverse gear into operation and automatically exercising a continuing manually governed control over its operation.

11. In a hoisting apparatus the combination with a bucket of an opening and closing cable therefor, a hoisting cable, winding drums for said cables, controlling levers for said drums, a counterweight connected with the holding drum, planetary gearing for turning said holding drum reversely to lift the counterweight, a brake member for applying said planetary gearing, pressure ,fiuid means including an operating cylinder for controlling said brake member, and means, including a controlling valve under the control of one of said levers, for supplying operating fluid to said cylinder and automatically maintaining therein the desired controlling pressure at the will of the operator.

12. In a hoisting apparatus the combination with a trolley, of a rope winding-drum therefor, a driving engine, means for starting, stopping and reversing said engine, a brake for the said drum, a controlling lever for said hoisting apparatus and means upon said controlling lever (but mounted for movement independently thereof) for controlling said brake and said starting, stopping and reversing means.

18. A hoisting apparatus having a bucket, a trolley, a pair of hand operated levers for controlling the bucket, a trolley rope and rope winding drum, a pressure fluid engine connected to turn said drum, a reversing gear for said engine and simultaneously controllable auxiliary means, associated with said bucket operating levers, for starting, stopping and reversing said pressure fluid engine, said means being within the control of the same operator to start, stop and reverse said engine while maintaining his hold upon the bucket operating levers.

14. A hoisting apparatus having a trolley, a bucket, a pair of hand operated devices for controlling the bucket, a trolley rope, a rope winding drum, a pressure fluid engine connected to turn the drum, a valve reversing gear, and auxiliary means for moving said gear to start, stop and reverse the engine, said auxiliary means being associated with said hand operated devices and adapted to be actuated by the hand of the opera tor while still maintaining his hold upon the hand operated devices.

15. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid-pressure engine connected to turn the drum, reverslng mechanism for the engine, a throttle valve also for the engine, an operating rope leading to the bucket, a lever for controlling said operating rope and controlling elements for the reversing "gear and throttle valve adapted to be controlled by the same operator while maintaining his hold upon the bucket-rope lever, said elements including a pivoted hand grip upon said lever.

16. In an apparatus for effecting the cooperating'movements of a hoisting bucket and its traversed support, the combination .with a traversing rope, a traversing drum,

n fluid-pressure engine connected to turn the drum, reversing mechanism for the engine,

a throttle valve also for the engine, an operating rope leading to the bucket, a lever for controlling said operating rope and controlling elements for the reversing gear and throttle valve adapted to be controlled by thesame operator while maintaining his hold upon the bucket rope lever, said elements including a controlling member mounted for movement upon said bucket lever, said lever and member having each a working movement independent of the movement of the other.

17. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a throttle valve also for the engine, bucket controlling ropes and rope winding drums, a pair of drum friction devices and friction controlling levers for said bucket ropes and controlling elements for the throttle and reversing gear adapted to be actuated by the operator while still maintaining his hold upon the friction levers, said elements including pivoted hand grips one upon each friction lever.

18. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid premure engine connected to turn the drum, a reversing mechanism for the engine, a throttle valve also for the engine, bucket controlling ropes, a pair of friction devices. and friction controlling levers for said bucket ropes, and controlling elements for the throttle and reversing gear adapted to be actuated by the operator while still maintaining his hold upon the friction levers, said elements including a controlling member mounted for movement upon each friction lever and having a working movement independent of the working movement of said lever.

19. In an apparatus for effecting the co.- operating movements of a hoisting bucket, and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for said engine, a pressure-actuated piston for moving said reversing mechanism, a throttle, bucket ropes, a pair of levers controlling said bucket ropes and controlling means for the pressure-actuated piston within the control of the operator controlling said friction levers.

20. In an apparatus for effecting the cooperating movements of a hoisting bucket, and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, reversing mechanism for the engine, a pair of bucket ropes and bucket controllin levers, a fluid pressure engine for operating the bucket, and means Within the control of the same operator While still maintaining his hold upon the bucket operating levers for controlling said reversing mechanism.

21. In an apparatus for eflecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a throttle, a brake, a pair of bucket controlling levers and controlling elements for controlling said reversing mechanism, throttle and brake adapted to be controlled by the same operator while maintaining his hold upon the bucket operating levers, said elements including a grasping device upon each bucket lever.

22. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a throttle, a brake, a pair of bucket controlling levers, and controlling elements for controlling said reversing mechanism, throttle and brake within the control of the same operator while maintaining his hold upon the bucket operating levers. I

23. In an apparatus for effecting the cooperating movements of a hoisting bucket, and its traversed support, the combination with a traversing rope, a. traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a throttle, a brake, a pair of bucket controlling levers, and controlling elements for controlling said reversing mechanism, throttle and brake and adapted to be controlled by the same operator while maintaining his hold upon the bucket levers, said elements including a grasping device upon a bucket lever.

24. In an apparatus for effecting the cooperating movements of a hoisting oucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a throttle, a brake, a pair of bucket controlling levers, and controlling elements for controlling said reversing mechanism, throttle and brake within the control of the same operator while maintaining his hold upon the bucket levers, said elements including a device movable by a hand of the operator holding a bucket lever.

25. In an apparatus for effecting the cooperating movement of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum,

a fluid pressure engine connected to turn the drum, a reversing gear, a brake, a pair of bucket operating levers, a fluid pressure engine for operating the buckets and control- 'ng elements for said brake and reversing ear within the control of the same operator while still maintaining his hold upon the bucket operating levers whereby the cooperatin movements of the bucket and its traverse support may be simultaneously controlled by the said otperator.

26. In an apparatus 0 the class described, the combination with a bucket, a bucket rope, a bucket controlling lever, a traversing r0 e iiie connected to turn the drum, a reversmg mechanism for the engine, a brake normally applied to hold the drum fixed, a

ressure actuated piston for releasing the rake, a valve for controlling said piston and a gras ing device upon the bucket lever for contro ling said valve.

27. In an apparatus of the class described, the combination with a bucket, a bucket rope, a bucket controlling lever, a traversing rope, a traversing drum, a pressure fluid engine connected to turn the drum, a reversing mechanism for the engine, a throttle for said engine, a bucket operating lever and a grasping device upon said operating lever for controlling said throttle.

28. In an apparatus of the class described, the combination with a pair of bucket ropes with winding drums and frictions, a fluid pressure engm'efor operating said winding drums, a pair of bucket friction levers, a traversin rope and traversing drum, a pressure flui traversing engine connected to turn the traversing drum, a reversing gear, a throttle, a brake and controlling elements for said throttle, brake and reversing gear positioned to be controlled cooperatively for the traverse of the bucket by the same operator while still maintaining his hold upon the bucket friction levers whereby the cooperating movements of the bucket and its traversed support may be simultaneously controlled by said operator.

29. In an apparatus of the class described, the combination'with a pair of bucket ropes with winding drums and frictions, a pressure fluid engine for operating said winding drums, a pair of bucket friction levers, a traversing rope and traversing drum, a pressure fluid traversing engine connected to turn the traversing drum, a reversing gear, a throttle and controlling elements for said throttle, an

reversing gear positioned to be controlled coo eratively for the traverse of the bucket by 0 same operator while still maintaining hlS hold upon the bucket friction levers whereby the cooperating movements of the bucket and its traversed support may be simultaneously controlled. by said 0 erator.

80. In an apparatus of t e class described,

a traversing drum, a pressure fluid enthe combination with a traversing rope, a winding drum for the rope, a pressure fluid engine connected to turn the winding drum, a reversing gear for the engine, a brake, a bucket friction lever, controlling members for the reversing gear and brake including a member so connected to the bucket friction lever as to be actuated by the operator while still maintaining his hold upon the lever.

31. In an apparatus of the class described, the combination with a traversing rope, a winding drum for the rope, a pressure fluid engine connected to turn the winding drum, a reversing gear for the engine, a throttle, a bucket friction lever, controlling members for the reversing gear and throttle including a member so connected to the bucket friction lever as to be actuated by the operator while still maintaining his hold upon the lever.

32. In a hoisting apparatus, the combination with a bucket of an opening and closing rope, a holdin rope, winding drums, a counterweight or the bucket, means for positively lifting the counterweight, a bucket lever and manually controllable automatically acting pressure fluid means controlled by the said bucket lever for initiating and automatically exercisin a continuing manually governed lifting e ect upon the counterweight through the use of said counterweight lifting means.

33. In a hoisting apparatus, the combination with a bucket of an o ening and closing rope, a holding rope, buc et levers, a counterweight for the bucket, means for lifting the counterweight, a traversing rope, a grasping device on a bucket lever for controlling the traversing rope, andpressure fluid means controlled by said bucket lever for rendering operative said counterweight lifting means.

34. In an apparatus for effecting the cooperating movements of a hoistin bucket and its traversed support the com1ination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversin mechanism for the engine, a brake, a pair 0 bucket controlling levers, a fluid pressure engine for the bucket, and controlling elements for controlling said reversin mechanism and brake adapted to be contro led b the same 0 erator while maintaining his old upon t e bucket operating levers, said elements including a grasping device upon a bucket lever whereby the cooperatin movements of the bucket and its traverse support may be simultaneously controlled by said operator.

35. In an apparatus for effecting the cooperating movements of a hoistin bucket and its traversed support, the comIination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum a reversing mechanism for the engine, a brake, a pair of bucket controlling levers and controlling elements for controlling said reversing mechanism and brake adapted to be controlled by the same operator while maintaining his hold upon the bucket operating levers.

36. In an apparatus for effecting the 00- operating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine connected to turn the drum, a reversing mechanism for the engine, a brake, a pair of bucket controlling levers and controlling elements for controlling said reversing mechanism and brake adapted to be controlled by the same operator while maintaining his hold upon the bucket levers, said elements including a device connected to a bucket lever. 37. In an apparatus of the class described, the combination with a traversing rope, a winding drum, a pressure fluid engine connected to turn the winding drum, a reversing gear for the engine, a throttle, a bucket friction lever, a pressure fluid engine for the bucket, controlling members for the reversing gear and throttle including a member so connected to the bucket friction lever as to be operated by the operator while still main- .taimn his hold upon the lever.

38. he combination with a bucket, a traversed support, a pair of bucket ropes winding drums and drum frictions, a air 0 friction levers for controlling the ucket ropes, a traversing rope and rope winding drum, a pressure fluid engine to turn the drum, a brake normally a plied to hold the drum, a reversing gear or the engine, a throttle valve for the engine and controlling means at the bucket operators position for the brake reversing gear and throttle, said means being operable by the o eratorwhile maintaining his hold upon the riction levers.

39. The combination with a bucket, a traversed support, a pair of bucket ropes, winding drums and drum frictions, a pair of friction levers for controlling the bucket ropes, a traversing rope and rope winding drum, a pressure fluid engine to turn the drum, a reversing gear for the engine, a throttle valve for the engine and controlling means at the bucket operators position for the reversing gear and throttle, said means being operable by the operator while maintaining his hold upon the friction levers.

40. The combination with a bucket, a traversed support, a pair of bucket ropes, winding drums and drum frictions, a pair of friction levers for controlling the bucket ropes, a traversing rope and rope winding drum, a pressure fluid engine to turn the drum, a reversing gear for the engine, a pressure fluld device to move said reversing gear, a valve for controlling said pressure fluid device and controllin means at the bucket operators position for controlling said valve, said means being controllable by the operator while maintaining his hold upon the friction levers.

41. The combination with a bucket, a traversed support, a pair of bucket ropes, winding drums and drum frictions, a pair of friction levers for controlling the bucket ropes, a traversing rope and rope winding drum, a pressure fluid engine to turn the drum, a brake normally applied to hold the drum, a reversing gear for the engine, fluid pressure means to release the brake and to control the reversing gear and controlling means at the bucket operators position for controlling said fluid pressure means.

42. The combination with a bucket, a traversed support, a pair of bucket ropes, winding drums and drum frictions, a pair of friction levers for controlling the bucket ropes,

a traversing rope and rope winding drum, 9. pressure fluid engine to turn the drum, a brake normally applied tohold the drum, a fluid pressure device to release the brake, a valve to control the fluid pressure device, a reversing gear for the engine, and a grasping device on the bucket lever to control the said valve.

43. The combination with a bucket, a traversed support, a' pairof bucket ropes, winding drums and drum frictions, an engine for the bucket, a pair of friction levers for controlling the bucket ropes, a traversing rope and rope winding drum, :1 pressure fluid enine to turn the traversing rope drum, a

rake, a reversing gear for the engine, a throttle for the engine and controlling means for the brake, reversing gear and throttle at the operators position, including a control element connected to a bucket lever.

44. The combination with a bucket, a traversed support, a pair of friction levers for controlling the bucket ropes, an engine for the bucket, a traversing rope and rope windingdrum, a fluid pressure engine to turn the traversing rope drum, a brake, a reversing gear for the engine, a throttle for the engine and controllin means for the brake reversing gear and t rottle at the operators position including a grasping device on a bucket lever whereby the cooperating movements of the bucket and its traversed support may be simultaneously controlled by the same operator.

45. The combination with a bucket, a traversed support, a pair of bucket ropes, winding drums and drum frictions, a pair of friction levers for controlling the bucket ropes, a traversing rope and rope winding drum, a fluid pressure engine to turn the drum, a brake, a reversing gear for the engine, a throttle for the engine, and controllin means for the brake, reversing ear an throttle at the operators position including a pair of grasping devices one on each bucket lever.

46. The combination with a bucket of a traversing rope, a pair of bucket levers, a traversing engine, a reversing gear therefor, a pressure fluid device for moving said reversing gear and a controlling element at the operators position and means controlled by said controlling element to move said pressure fluid device and reversing gear to a variable extent determined by variable movement of the controlling element, said means being controllable by the operator while maintaining his hold upon said bucket levers.

47. A hoisting apparatus having a hoisting device, a traversing support, a traversing rope, a traversing engine, a reversing ar, a pressure fluid device for moving sai reversing gear, a controlling valve, a controlling element at the hoisting operators position to move said valve, and means connecting said valve and said reversing gear to variably position the latter both at its extreme positions and at intermediate points according to the variable position of the controlling element.

48. In an apparatus for efiecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a fluid pressure engine to turn the drum, a reversing mechanism for the engine, a brake, a throttle, a pair of bucket controlling levers, an engine for the bucket, and a pivoted hand grip on one of the levers exercising control jointly over the throttle and the brake.

49. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a pressure fluid engine connected to turn the drum, a reversing mechanism for said engine, a brake, a throttle, a pair of bucket friction levers, a pivoted hand grip on one lever exercising control jointly over the brake and the throttle, and a pivoted hand control grip also on the other lever.

50. In an apparatus of the class described, the combination of a traversing rope, a winding drum'for the rope, a pressure fluid engine connected to turn the drum, a reversin'g gear for the engine, a bucket friction lever and controlling members for the reversing gear including a member so connected to the bucket friction lever as to be actuated by the operator while still maintaining his hold upon the lever.

51. In a hoisting apparatus the combination with a trolley of a bucket sustained thereby, a bucket motor, clutch controlling levers for the bucket, a winding drum for the trolley, a motor for said winding drum, and means upon said clutch levers for starting, stopping and reversing said winding drum motor.

52. In a hoisting apparatus the combination with a trolley of a bucket sustained thereby, controlling levers for the bucket, a winding drum and a driving motor for the trolley, means for reversing said motor, and a device adapted to be controlled by the hand of the operator while grasping one of said controlling levers, said device bein movable independently of said lever and eing connected to said motor reversing means.

53. In an apparatus for effecting the cooperating movement of a hoisting bucket and its traversed support, the combination with a traversing rope, a traversing drum, a motor connected to turn the'drum, reversing mechanism for the motor, a brake, a pair of bucket controlling levers, a bucket motor and controlling means for said reversing mechanism and brake adapted to be controlled by the same operator while maintaining his hold upon the bucket levers, said means including a device connected to a bucket lever.

54. In an apparatus for effecting the cooperating movements of a hoisting bucket and its traversing support, the combination with a traversing rope, a traversing drum, a motor connected to turn the drum, reversing means for they motor, a pair of bucket controlling levers and controlling means for controlling said reversing means adapted to be controlled by the same operator while maintaining his hold upon the bucket levers, said means including a device connected to a bucket lever.

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

ALMON E. NORRIS.

Witnesses:

Evmm'rr S. EMERY, THOMAS B. Boo'rn.