US1624545A - Hoisting and conveying device - Google Patents

Description

' April 12, 1927. 1,624.545

M. H. DICKINSON HOISTING AND CONVEYING DEVICE Filed Oct. 9, 1924 2 sham-sum 1 v NVENTOR. mu/6f Filed Oct. 9, 1924 2 Sheets-Sheet 2 &

INVENTOR.

M TTORNEYS Patented Apr. 12, 19 27.

UNITED STATES PATENT OFFICE].

MEBIAN DICKINSON-0F SEATTLE. wesnmer'or. eeslenoa To mneamv or MAN vm rwnmo COMPANY, QFNEW'YQBKN. a GQBB BATI N OF NEW YORK- I-IOISTING AND CONVEYIN DEVICE.

Application filed October 9, 1924. Serial no. 742,530.

lVhile not limited thereto, my invention is particularly applicable to the skidding of logs.

In skidding logs by what is known as the overhead interlocking cableway system, that is, a system in which the inhaul and the outhaul or receding drums are practically locked together and rotated in unison when skidding the logs, one of the diiiiculties present in the'system has resulted from the varying effective diameters of the drum carrying the inhaul or skidding cable and that carrying the outhaul or receding cable. This difliculty is due to the piling up of the cable on the drum or the reverse as the cable is wound in or paid out, the reverse action taking place in the case of the other drum, and this'difliculty becomes the greater as the length of span increases. Myinventioh has for one of its objects the overcoming of the above-mentioned diiliculty by apparatus that is both comparatively simple, ef-

ficient in operation, and satisfactory'to operator.

My invention will best be understood by reference to the accompanying drawings, in which I have illustrated one embodiment of my invention and, in which Fig. 1 is a plan view of the Winding engine embodying my invention, and illustrating in a diagrammatic manner the cables wound on the inhaul and outhauldrums, the cables and parts associated therewith, aside from the engine, being illustrated in side elevation; Fig' '2 is a section taken along the plane of the line 22 in Fig. 1; Fig. 3 is a section taken along the plane of the line 3'3 in Fig. 1; Fig. at is a section taken along the plane of the line l4c in Fig.1, and Fig. 5 is a sectional view illustrating in detail afriction device.

Like reference characters indicate like parts throughout the drawings. I

Referring to the drawings, 10 is'a driving member in the form o a shaft having its bearings in the side members 11, 11 of the frame. Crank discs 12, 12 are secured on the ends of said shaft and are provided with the usual crank pins 18, 13 operated by connecting rods 14, 14, indicated in dotted lines,

the opposite ends of which are operated by pistons in cylinders 15, 15- wh'ic'h receive steam from any suitable supply, not illustrated. On the shaft 10 is secured apinion 16, preferably located near one end thereof, and near the opposite enda'pinion 17 which is loose on the shaft; The pinion 16 engagesa gear 18 which is'preferably, though not necessarily, keyed to a shaft 19 having its bearings in the side frames 11, 11 and carrying a skidding drum 20, which is also preferably, though not necessarily, loose on the shaftand movable longitudinally thereof. The skidding and hoisting cable 21 is wound upon the skidding and hoisting drum and pa::ses over a sheave 22 located adacent the headtower in a well-known manner, and also passing over a sheave 23 on the carriage 24, the'end of said cable being attachable to a load, diagrannnatically indicated at 25, and which, of course, will be a log when the apparatus is used in log skid ding. The carriage'moves along a main supporting cable 26 in the usual way.

The gear 18 meshes with a gear 27 which is preferably keyed to the shaft 28, also having its bearings in the side frames 11, 11. The shaft 28 carries an outhaul drum 29 which is preferably loosely mounted thereon but longitudinally movable thereof. An outhaul cable 30 is wound upon the outhaul drum 29, the same passing over a sheave 31 located near the head tower, and over a sheave 32 located near the tail spar or tower, the opposite end of the outhaul cable '30 being attached to thecarriage 24, as diagrammatically indicated in Fig. 1. The gear 17 meshes with a gear 33 secured to the drum 29. i i

The drum 29is moved" longitudinally of the shaft onwhiclr it is mounted to bring the same into frictional driving engagement either with the gear 27 or a gear 34, also mounted loosely on the shaft 28 adjacent to the gear 33 by known mechanism which will now be described. A sleeve 85 of bronzeor other suitable bearing material is preferably interposed between the shaft 28 audthe drum 29. As stated, the gear 34 is loose on the shaft 28 and, therefore, should have a comparatively long bearing. It also occupies a place on the shaft whereit is necessary to have a cross key to thrust the drum in the opposite direction into engagement with gear'27. The gear 34 is therefore pref may provided with an elongated hub36 extending into an enlarged opening 37 at the adjacent end of the drum 29, a thrust sleeve 38 being interposed between -the hub 36 and the shaft 28. The left end of'the sleeve 38, as viewed in Fig.2, is brought into 1&245545 tower to ard the head mast or tower, the relative effective diameters of the two drums change and, in order to bring about a corresponding change in the relative speeds of the two drums, the operator shifts the drum 29 from engagement with the gear 27 into engagement with the gear 34. The drum 29 is then rotated in the same direction as previously and in theopposite direction to the drum 20 by the pinion 16, gear 18, gear '57, which is fast to the drum, gears 3a and 33, the speed ratio of the drum 29 at this time to the drum 20 being higher than previously to compensate for the relative change in their effective diameters, the diameter of the gear 57 being greater than that of the gear 18.

It will be observed that during the entire inhaul operation, the speed of the inhaul drum is not changed, the relative change in speed between the inhaul and the outhaul drums being effected by speeding up the outhaul drum. This means that the movement of the carriage from its position near the tail mast or tower to a position near the head mast or tower is not slowed down, and this advantage is preserved While providing the advantages of the change in relative speeds between the inhaul and outhaul drums.

It will of course be understood that various modifications in the devices illustrated may be made without departing from the spirit of my invention and without exceeding the scope of the claims.

I claim:

1. In combination, a main cable, a carriage mounted thereon and adapted to be moved therealong, a driving member, an inhaul and an outhaul drum on each of which a cable is wound, the cables being connected to and adapted to move said carriage in opposite directions, a driving member, means for driving said inhaul and outhaul drums in interlocked relation in the inhaul direc' tion, and means for changing the speed ratio of said drums while rotating in the inhaul direction by changing the speed of rotation of the outhaul drum.

2. In combination, main cable, a carriage mounted thereon and adapted to be moved therealong, a driving member, an inhaul and an outhaul drum on each of which a cable is wound, the cables being connected to and adapted to move said carriage in opposite directions, a driving member, means for driving said inhaul and outhaul drums in interlocked relation in the inhaul direction, and means for changing the speed ratio of said drums while rotating in the inhaul direction by changing the speed of rotation of the outhaul drum while maintaining a substantially uniform speed of the inhaul drum.

3. In a winding'engine, a rotatable driving member, an inhaul and an outhaul drum driven, thereby in interlocked relation in the inhaul d rection, means for changing the speed ratio of the said drums when romg inthe inhaul direction by changing the actual speed ofthe outhaul drum, and means for actuating said drums at a different speed and in non interlocked relation in the outhaul direction operable from said driving member when rotating in the same direction when it drives said inhaul and outhaul drums in interlocked relation.

5. In a winding engine, inhaul and outhaul drums, shafts on which the respective drums are mounted, meshing driving gears mounted on the respective shafts adjacent to the respective drums and adapted fric-' tionally to engage the same, a driving shaft and pinion fast thereon meshing with one of said gears for driving said gears in opposite directions to each other to inhaul the load, other meshing gears at the opposite ends of the drums, the gear at the end of the inhaul drum being fast to the drum and of a larger diameter than the gear adjacent to the opposite end thereof, and means for moving said drums longitudinally of their shafts to bring the inhaul druminto operative engagement with its driving gear, and the outhaul drum into operative engagement with the gear at either end thereof whereby said drums may be driven in opposite directions to each other and at different relative speeds in the inhaul direction.

6. In a winding engine, inhaul and outhaul drums, shafts on which the respective drums are mounted, meshing driving gears mounted on the respective shafts adjacent to the respective drums and adapted frictionally to engage the same, a driving shaft and pinion fast thereon meshing wit-h one of said gears for driving said gears in opposite directions to each other to inhaul the load, other meshing gears at the opposite ends of the drums, the gear at the end of the inhaul drum being fast to the drum and of larger diameter than the gear adjacent to the opposite end thereof, and means for moving said drums longitudinally of their shafts to bring the inhaul drum into frictional driving engagement with its driving gear, and the outhaul drum into frictional driving engagement with the gear at either end thereof whereby said drums may be driven in opposite directions to each other and at different relative speeds in the inhanl direction.

7. In a Winding engine, inhaul and outhanl dri'nns, shafts on which the respective drums are mounted, meshing driving gears mounted on the respective shafts adjacent the respective drums and adapted friction ally to engage the same, a driving shaft and pinion fast thereon meshing with one of said gears for driving: said gears in opposite directions to inhanl the load, other ineshing gears at the opposite ends of the drains, the gear at the end of the inhanl drnin be ing' fast to the drum and of larger diaineter than the gear adjacent the opposite end. thereof and the gear at the end of the onthanl drnni being, adapted to he clutched thereto, a gear fast to the onthanl drum, a pinion loose on the driving shaftmeshing with the said gear fast to the onthanl drunn and means for operatirely connecting said hist-nained pinion to its driving shaft.

8. In a winding engine, inhanl and out- .haul drums, shafts on which the respectivedrums are mounted, meshing driving gears mounted on the respective shafts adjacent the respective drains and. adapted frictionally to engage the same, a drivingshaft and pinion fast thereon meshing with one of said.

gears for driving said gears in opposite direction to inhanl the load, other meshing gears at the opposite ends of the drums, the gear at the end of the inhanl drain being fast to the drum and of larger diameter than the gear adjacent the opposite end thereof and the gear at the end of the onthanl drnni heing adapted to he clutched thereto, a gear fast to the onthanl drnn'i, a pinion loose on the driving shaft and of larger (llZHIIQtGL' than the first-mentioned pinion, meshing: with the said gear fast to the onthanl drum. and means for operatively connecting said last-named pinion to its driving shaft.

MERIAN H. DICKINSON.

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