US1086912A - Elevated carrier. - Google Patents

Description

Patented Feb. 10, 1914.

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INVENTOR 4/va/2 D. Hadse/ WITNESSES Zia/ k6 ATTORNEYS COLUMBIA PLANOGRAPH co.,wAsH1NGTON. n. c,

A. D. HADSEL. ELEVATED CARRIER.

Patented Feb. 10, 1914.

PLIUATION TILED MAR. 19, 1913.

INVENTOR All/ah D. Hadse/ ATTORNE Y8 Patented Feb. 10', 1914 3 SHEETS-SHEET 3.

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ALVAI-I D. HADSEL, OF PHILADELPHIA, PENNSYLVANIA.

ELEVATED CARRIER.

Specification of Letters Patent.

Application filed March 19, 1913.

Patented Feb. 10, 1914. Serial No. 755,360.

To all whom it may concern:

Be it known that I, ALVAH D. HADsEL, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and Improved Elevated Carrier, of which the following is a full, clear, and exact description.

This invention relates to elevated carriers including a cableway which may be of considerable length and along which is adapted to be operated a main carriage for the purpose of supporting any suitable form or type of excavator bucket or means for handling material in general including the loading and unloading of barges or other craft or the transfer of material from vessels to cars or the handling of stone in quarries or the like.

Among the objects of this invention is to so support the main cableway as to render it tiltable into positions substantially parallel with itself for the purpose of widening the field or scope of its span or operations.

The foregoing and other objects of the invention will hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which-- Figure 1 is a side elevation giving a diagrammatic representation of the complete device made in accordance with a preferred embodiment thereof; Fig. 2 is a corresponding plan view of the same; and Fig. 3 is an elevation of one end of the device showing in full lines the normal position of the booms, and in difierent character of dotted lines the positions into which the devices may be moved in either direction from the normal.

Referring to the drawings for a detailed description I show at 10 a pair of booms or other supporting devices, each of which is tiltable upon a step or foot 11 and prevented from tilting toward the other by means of a fixed guy 12. The main cableway 13 is supported upon and extends between the upper ends of the booms. The ends of the cableway are anchored at 14: in any suitable form of brackets 15. The booms 10 and the cableway 13 supported between them, as above premised, are adapted to be tilted laterally with respect to the vertical plane defined by the feet 11. The means I employ for the purpose of maintaining the cableway and its supports in an upright position or at any degree of inclination therefrom includes a pair of cables at and Z) connected to and controlled by a motor 16. Said motor may be of any suitable type but preferably includes a pair of vertical double drums 17 and 18, and said drums are controlled in their rotation by means of a .pair of worm gears 19, one secured to each drum, and a worm 20, between and in mesh with both of sa d worm gears, said worm constituting or being connected to the crank shaft of the motor. When the worm is stationary it constitutes a lock for the drums 17 and 18, and when it is rotated in either direction it will cause a corresponding rotation. of both of the drums. The drum 17 comprises two grooved portions, 17 for the cable a, and 17 for the cable 6. Likewise the drum 18 has corresponding grooved portions 18 and 18". By providing a plurality of these double drums I am enabled to pass the cables around them a number of times in order to provide the necessary amount of friction to cause proper operation of the cables without any danger of the cable becoming displaced therefrom.

Fig. 2 is relied upon especially to show one manner of arranging the cables upon the drums and indicating also their relative directions. It will be observed that each of the booms or supports 10 is made preferably hollow for the purpose of accommodating a counterweight 21 which is guided up and down therein to a certain extent. The exterior of the boom may be braced or trussed in order to strengthen the same in any well known manner. For an understanding of the manner of reeving the cables it may be noted that the cable a, for instance, is connected at one end at 22 at the top of the counterweight and extends thence to the top of the boom over a pulley 23, thence laterally and downwardly to a pulley 24 secured in any suitable mariner as through a deadman or anchor 25, thence back to the top of the boom and over a pulley 26, thence back and over a pulley 27 anchored adjacent the aforesaid pulley 24:, and thence'to the portion 17 of the drum 17 around which it passes to and around the portion 18 of the other drum and so on a sufficient number of times to make tractive grip, and thence the same cable extends out toward the opposite side of the field of operation where it passes around a pulley 28 anchored at 29, thence to and over a pulley 80 at the top of the boom and corresponding to the pulley '26, thence back to the pulley 31 anchored adj acent the pulley 28, thence over a pulley 32 at the top of the boom and thence down to the counterweight.

The cable 6 is connected to the counterweight of the distant or field boom in substantially the same manner the cable a is connected to its counterweight and operates thence in lateral directions over pulleys arranged and anchored as those already described in connection with the first boom, and thence to the portions 17 and 18 of the drums 17 and 18, the intermediate portions, however, of said cables being guided over a series of idler pulleys 33 located or anchored adjacent the anchors 25 and 29 already described. It will be observed that the cables (4 and Z) on one side of the drums will be takenin simultaneously and at the same speed whereby both of the booms will be drawn in parallelism so as to tilt in the same direction, and at the same time the cables on the opposite side of the drums will be paid out at the same rate of speed, allowing such tilting of the booms. The counterweights 21 will be sufficiently heavy to keep all of the portions of the cables a and Z) substantially taut at all times and to provide ample operative connection for the ends of both cables.

At 34 I show a main carriage adapted to travel along the cableway 13 substantially from one boom to the other. Said carriage is provided with a pair of wheels 35 constituting the main rolling supports therefor. A frame 86 carries auxiliary pulleys 37 and 38 below the cableway 13, and an upward extension 36 of the frame carries additional idler pulleys 39 arranged closely adjacent each other and preferably in pairs.

The load carrier 40 shown in the nature of a clam shell bucket is carried and operated by and below the carriage 34 through a pair of cables 0 and (Z. The cable 0 is what I term the closing line or cable and is reeved in the following manner. Beginning at the clam shell bucket, the cable 0 is connected to the closing sheave 41 which is common to buckets of this type, thence to the sheave 37, thence outwardly over a sheave 42 mounted in the bracket 15 of the field boom 10, thence forwardly between the sheaves 39 at the top of the carriage and thence over a sheave 43 in the bracket 15 at the top of the near boom, thence down and around a sheave 44 adjacent the foot of the boom, thence over a sheave 45 in a running block 46, thence down and around a pair of drums 47 and 48 of a motor 49, thence over asheave 50 at the foot of the boom, thence over a sheave 51 in the bracket 15, and thence to an anchorage point 52 on the main carriage. The

motor 49 may be of any desired type and includes a pair of drums 47 and 48 mounted preferably on the same shafts as the drums 47 and 48 respectively. Like the drums 17 and 18 each of these drums of the motor 49 is preferably grooved to increase the grip on the cable.

The companion cable cl may be termed a holding line or cable and is rceved in a manner very similar to that of the cable 0. Be-

ginning at a fixed anchorage at 53 on the a over a sheave 51, thence over the sheave 38 r on the carriage and finally anchored at 56 to the bail of the load carrier.

As above premised, the pairs of drums 47 and 48, and 47 and 48, respectively, are capable of operation each pair independently of the other pair, and being mounted on the same shafts each to each they may be operated in unison by any well known system of clutches and levers.

The blocks 46 and 55 are controllable and movable independently of each other and each carries over its sheave 45 or 54 a bight of the corresponding cable 0 or (Z, said bight being adapted to be lengthened or shortened to cause a certain operation of the load carrier. An engine 58 is provided with a pair of drums 59 and 60 which may be mounted on the same shaft but controllable independently of each other or in unison as may be desired. A cable e is connected at one end to the block 46 and extends thence over a sheave 61 mounted in an extension 15 of the bracket at the top of the boom, thence ing to bring the weight of the load carrier upon the cable 0. Likewise a cable 7 is anchored at one end to the block 55 and em tends over a sheave 61, thence down and around a sheave 64 in the block 55, thence up and around a sheave 63 in the extension 15, and thence down and connected to the drum 60. The blocks 46 and 55 must be independent of each other in order to provide for the independent action of the flexible loops or bights operating over the sheaves 45 and 54.

During the traversing of the carriage along the cableway 13, the drums 59 and 60 will preferably be stationary, although it is to be observed in this connection that the several adjustments or operations of the several drums and cables may be carried on more or less simultaneously if desired. For the purpose of causing the movement of the carriage and load carrier toward the near boom or power station, the cables 0 and (Z will both be operated by the motor 4.9 in the same direction, causing the carriage to move as though drawn directly by the cable 0 at the point of connection 52, but with the block 46 being stationary said cable will pay out at the load carrier end and thereby maintain the same relative tension as the other cable (Z. Such movement of the motor 49 will cause draft also to be applied in the same direction through the cable (Z acting upon the load carrier through the carriage and paying out at the end anchored at 53. A reverse rotation of the motor 49 will, of course, cause the load carrier and carriage to be traversed outwardly or toward the distant or field boom.

Since the span between the booms 10 may be considerable with a corresponding weight of the portions of the cables 0 and (Z extending along the cableway 13, in order to insure responsive operation in the control of the load carrier, I provide any suitable number of differential carriers mounted upon the cableway 13 and cooperating with all of the other cables. These differential carriers are of peculiar construction and operate automatically through the traversing movement of the cables 0 and (Z. Likewise the frame 36 and its extension 36 provide, through the wheels and sheaves 35 and 39, a cooperation between the cables 0 and (Z extending between the sheaves 39 and the main cable whereby the strain upon the cables c and (i will have a tendency to assist in supporting the cableway.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination of a pair of hollow booms, means to support the lower ends of the booms in fixed position, a cableway extending from one boom to the other and supported thereby, and means to control the position of the booms with respect to the ver tical plane intersecting the lower end supports, said controlling means including counterweights within the booms and a series of cables connected to and suspending said counterweights and extending laterally from the upper ends of the booms.

2. The combination of a pair of booms, fixed supports for the lower ends of the booms, a cableway extending from one boom to the other and supported thereon, carrying devices on said cableway, and means to control the position of the boo-ms and cableway with respect to the vertical plane of said fixed supports, said controlling means including counterweights slidable along the booms, a power device, a series ofsheaves anchored at points spaced laterally from said plane, and a plurality of cables extending from said power device through said sheaves, thence to the tops of the booms and connected to said co-unterweights.

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

ALVAH D. HADSEL. lVitnesses:

ERNEST M. PORTER, JOHN C. LAWRENCE.

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

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