US1099278A - Hoisting-bucket. - Google Patents

Description

F. W. BOND. HOISTING BUCKET.

APPLICATION FILED 1130.9, 1912.

Patented June 9,1914.

2 SHEETS-SHEET 1.

INVENTIJR br t ATTURNEYE:

COLUMBIA PLANOCIRAPN CO-. WASHINGTON. D. C.

F. W. BOND HOISTING BUCKET.

APPLICATION FILED 111:0. a, 1912.

Patented June 9, 1914.

2 SHEETS-SHEET 2.

INVENmR bra/ W ATTURNEYEJ.

UNITED STATES PATENT. OFFICE.

FREDERICK W. BOND, OF BUFFALO, NEW YORK.

HOISTING-BUCKET.

Application filed December 9, 1912.

To all whom it may concern:

Be it known that I, FREDERICK IV. Bonn, a citizen of the United States, residin at Buffalo, in the county of Erie and tate of New York, have invented new and useful Improvements in Hoisting-Buckets, of which the following is a specification.

The invention relates to a bucket for hoist ing machines and more particularly to buckets of that type which are generally known as grab bucketsin whichtwo scoops are pivotally connected with each other. and adapted to open and closefor discharging or receiving a load and which are operated by means of a tackle comprising a lifting line adapted to close the scoops of the bucket and transport the load from one place to another and a holding line which supports the bucket while the lifting line is relaxed for the purpose of permitting the scoops to open and discharge the load therefrom. l n buckets of this type as heretofore constructed the space within these scoops has usually been obstructed more or less by the pivotal connections between the scoops and other parts so that the capacity of the bucket was limited and interference occurred when loading of the bucket and also whendischarging the load therefrom.

One of the objects of this invention is to produce a bucket of this character in which the space within the scoops is free of obstructions so that the same is capable of taking on a maximum load and also avoid in terference with loading and dumpingof the bucket.

Another object of this invention is to so construct the bucket that the opening movement of the scoops will be positively limited and the edges of the latter will occupy a definite position while engaging the load and thereby permit of scooping up the maximum amount of material to be transported.

Another object of this invention is to so arrange the lifting line and the pulleys around which the same passes that the pull.

on this line is always in a directionwhich will cause the same to run properly on or off the pulleys or sheaves and without liability of this line becoming fouled or disarranged.

A further object of this invention is to permit of constructing the bucket mainly of sheet metal and angle and channel irons which are always carried in stock and thus permit of constructing the bucket without Specification of Letters Patent.

Patented June 9, 1914. Serial No. 735,599.

making specialv castings and thereby reduce the cost of construction.

A still further object of this invention is to so arrange the counterbalancing weights of the bucket that these weights may be readily increased or decreased accordingto the length of the lifting and holding lines which are associated with the bucket.

In the accompanying drawings consistin of 2 sheets: Figure l is a side elevation o a hoisting or grab bucket constructed in accordance with my invention, the same being shown in a closed position. Fig. 2 is a side elevation of the same, partly in section, the same being shownin an open position. Fig 3is an end view of the bucket in a closed position and partly in section, the sectional part being taken approxin'iately in line 33, Fig. 1.. Fig. 4 is a bottom plan view of the head of the bucket. Fig. 5 is a diagrammatic perspective view of the two branches of the lifting line of the bucket and the various sheaves or pulleys on the bucket around which the same passes. Fig. 6 is a fragmentary horizontal section taken in line 66, Fig. 1.

Similar characters of reference indicate corresponding parts throughout the several views.

In its general organization my improved bucket comprises two scoops which are pivotally connected so that they can swing vertically toward and from each other, a supporting head or frame arranged above the scoops, two arms, links or hangers which are pivotally connected at their upper ends with the under side of the supporting head while their lower ends are pivotally connected respectively with the scoops a lifting tackle operating to close the scoops and lift the load within the same, and a holding tackle operating to hold the head of the scoop while the lifting tackle is relaxed to perinit1 the scoops to open and discharge the oac.

The supporting head may be variously constructed but as shown in the drawings the same is built up of stock angle andchannel irons and sheet metal plates which are readily available and comprises two pairs of longitudinal channel bars 1, 1 arranged cured transversely to the underside of the by means of a longitudinal pintle or pivot scoop side walls.

channel irons at opposite ends thereof, and

vided with reinforcing bands 7 secured, to

the outer sides of the scoops by rivets, as shown or otherwise, and having their inner edges chamfered so as to present cutting edges and thereby enablethe scoops to dig more readily into the pile of ore, sand or other materialwhich is to be transported.

The upper edge of each side wall of each scoop is preferablyreinforced by a pairof inner and outerreinforcing plates 8, 9 secured respectively to the inner and outer sides of the respective upper edge ofone of the scoops by means of rivets or otherwise. The outer ends of these reinforcing plates are provided with openings which coincide with an'opening in the adjacent part of the respective side wall of the scoop and forman-eye 10 whereby this part of the scoop is pivotally connected with'one of the suspen sion arms, links or hangers in a manner which will presently appear.

Each of the suspension links or hangers may be variously constructed but the same preferably comprises two upright side bars -11 "having their lower ends arranged 'adja-' cent to the inner sides of the two upright walls of one ofthe scoops and transverse braces 12 connecting the two side bars so that the latter and the braces form a rigid structure. bars of one of the suspension links or hangers are pivotally connected with-the outer parts of the side walls of one of the scoops rod 13 passing through eyes or openings in the lower endsat the companion side bars of the link and through the eyes 10 formed by the openings in the outer ends of the reinforcing plates and the adjacent parts of the The outer ends of the pivot rod 13 are provided with heads 14 bearing against the outer reinforcing plates so that spreading of the bucket is prevented and the lower ends of the link side bars areheld against the inner reinforcing plates by means of a spacmg sleeve 15 surrounding the intermed ate part of the pivot rod and bearing at its opposite ends against the inner sides of the companion link bars, as

The lower ends of the. two side the bucket, this being preferably effected by arranging the upper ends of the side bars of each link between the members of the pairs of angle irons 3 and passing pivot pins 16 horizontally through the vertical flanges of each pair of these angle irbns and through eyes 17 at the upper ends of the link side bars as shown in Figs. 1, '2 and 3.

The inner ends of the reinforcing plates at the upper edges of the scoops lap over each other and are pivotally connected for which purpose the inner ends of the two reinforcing plates of one vertical wall of one bucket are arranged close together while the inner ends of the reinforcing plates on the upper edge of the corresponding wall of the other scoop are spread apart sufiiciently to receive the companion inner ends of the reinforcing plates of the other scoop, as shown in Fig, 6. The overlapping inner parts of the reinforcing plates on the corresponding edges of the two scoops are provided with coinciding openings or eyes 18 which receive a horizontal longitudinal pivot pin 19 whereby the two scoops are pivotally conn-ected so that they can swing vvertically toward and from each other when opening and closing the bucket. Above the upper edges of the corresponding side walls of the scoops are arranged two pulley blocks each of. which is also preferably constructed of sheet metal and comprises two sections whichare arranged onopposite sides of the corresponding side walls of the bucket. Each section of a pulley block consists of an upright inner plate 20 which is straight throughout its length, and an outer upright plate having an inwardly deflected lower part 21 which 1 tervening space between the upper ends of the inner and outer plates of one pulley block section. Between the upper parts of the two inner plates of the two pulley block sections is arranged a weight which is adapted to counterbalance the weight of the lifting and holding lines whereby the bucket is operated. This counterbalancing weight is preferably constructed of a plurality of metal plates 23 which are. arranged side by side and secured together by means of rivets or otherwise; The upper parts of the two sections of the pulley block-and the intervening plates of the counter-weight are secured together by means of tie bolts or rods 24 passing horizontally through these several members as shown in Fig. 3, and the nner and outer plates of each section of the pulley block are held theproper distance apartat the upper ends thereof by means of spacingsleeves 25" arranged upon the tie rods 24 between the upper parts of each section of the pulley block. By spreading the sections of the pulley block more or less and varying the number-of plates which go to make up the thickness of the counterbalancing weight it is possible to adapt the counterbalancing effect of this weight to suit the length of lifting and holding lines in the lifting and holding tackle with which the bucket is associated.

At their lower ends the inner and outer plates of the two sections of the pulley block are provided with openings which coincide with the openings at the inner ends of the reinforcing plates on the scoop side walls and receive the ends of the pivot pin so that the latter serves to pivotally connect the respective walls of the scoops with each other as well as with the lower end of the companion pulley block.

In the spaces between the upper parts of the inner and outer plates of each pulley block section are arranged a pair of inner and outer lifting pulleys or sheaves 26, 27, the same being axially in line and pivotally connected with each other and with the pulley block and counterbalancing weight by a horizontal pivot pin 28 passing through these pulleys and the adjacent upper parts of the pulley block sections and counter-weight, as shownin Figs. 1, 2 and 3.

At its opposite ends the supporting frame or head is provided with four intermediate pulleys or sheaves 29, 29, 30, 30, a pair at each end, the members of each pair being pivoted, respectively, between the members of a pair of the channel irons or bars 1, 1, and the outer sides of the peripheries of each pair of intermediate pulleys being vertically in line with the horizontally opposite sides of the outer lifting pulley or sheave 27 of the companion pulley block.

31, 31 represent a pair of leading sheaves or pulleys pivoted on the central part of the supporting head, one between one pair of channel irons and in line with one member of one pair of intermediate pulleys and the other between the other pair of channel irons and in line with one member of the other pair of intermediate pulleys. On its underside the supporting head is provided with two guide pulleys or wheels 32 which are arranged below the diagonally opposite wheels 29, and attaching members arranged below the diagonally opposite pulleys 30. One of the guide pulleys 32 has its operative part verticallyin line with the adjacent side of the periphery of an inner pulley blocksheave 26 while the companion attaching member 33 is vertically in line with the opposite side of the periphery of said inner pulley block sheave.

34, 34 represent the branches of a lifting line which may be constructed in the form of a cable, rope or the like. One of these branches is attached to one of the attaching members 33 and passes thence downwardly and around the underside of one of the inner liftingpulleys or sheaves 26, thence upwardly and inwardly around the adjacent guide pulley 32, thence upwardly and outwardly overthe adjacent intermediate pulley 29 of one pair, thence downwardly and laterally underneath the adjacent outer lifting pulley or sheave 27, thence upwardly and inwardly over the other intermediate pulley 30 and thence underneath the companion leading pulley 31. and upwardly to the main part of this line running to the lift ing drum of the hoisting engine or mechanism. The other branch of the hoisting line connects at one end with the other attaching member 33 and passes thence successively around the pulleys 26, 32, 29, 27, 30, 31 the mainpart of this lifting line running to the hoisting machine in the same manner as that just described with reference to the other branch of the lifting line.

35, 35 re n-esont the two branches of the holding line of a holding tackle which connects with the two pairs of channels of the supporting head and which hold the same fixedly while the lifting line is relaxed to permit the scoops to swing apart for discharging a load and remain open prepara tory to taking up another load. This opening of the scoops is effected automatically when the lifting line is relaxed owing to the weight of the scoops which normally tend when free to swing with their central parts downwardly so that the mouth of the bucket is open. This opening of the bucket is facilitated by the load in the same and when empty the weights 23, 23 operate to counterbalance the lifting line and aid in causing the scoops to swing downwardly into an open position. This opening movement is limited and arrested when the bottoms of the scoops are in a vertical position or substantially so by providing the opposite sides of the counter-balancing weights with stop faces 3(3, the faces on each weight converging downwardly and being engaged by the upper edges of the adjacent scoop side walls and the reinforcing plates thereof, as shown in Fig. 2, whereby the scoops are rigidly held in definite position relatively to each other: while the bucket is lowered into engagementwith the material to be excavated or transferred.

Upon drawing on the lifting line while the scoops of the bucket engage the material the scoopsare caused to approach each other and pick up between them a charge of the material with'which they engage and after the two scoops engage each other and the bucket is closed the continued pull on the lifting line causes the bucket with its load to be lifted. \Vhile the scoops are thus closing the branches of the lifting line pass around the pulleys or sheaves of the head and pulley block with a direct lead and without liability of the lines running oif the pulleys or becoming fouled, thereby facilitating the handling and operation of the bucket. hen the loaded bucket has been moved to the desired place the head is held fixedly by the holding line and the lifting line is relaxed to permitthe scoops to open and discharge the load. Owing to the absence of any obstruction between the scoops at the pivotal connection between the same there is no interference of the bucket with the load" and it is possible to lower the scoops in a fully open position and pick up a load which may project a considerable distance upwardly beyond the pivotal connection between the scoops. 7

By reason of the fact that the principal parts of this bucket consist of angle iron, channel iron and metal plates which are always carried in stock in mills it is possible to produce these buckets at comparatively low cost.

I claim as my invention:

1. A hoisting bucket comprising two scoops which have their inner opposing parts pivotally connected and pulley blocks pivotally connected respectively with the inner parts of saidscoops, each of said pulley blocks comprising two sections each of which consists of an inner upright plate which is straight throughout the length thereof and an outer plate which has its lower part de flected inwardly and secured to the lower part of the companion inner plate while its upper part is deflected outwardly so as to form an intervening space between the same and the adjacent outer part of the inner plate, and a pulley pivotally mounted in each of said spaces between the upper parts of the plates of each of said sections.

2. A hoisting bucket comprising two scoops which have their inner opposing parts pivotally connected and pulley blocks pivotally connected respectively with the inner parts of said scoops, each of said pulley blocks comprising two sections each of which consists of an inner upright plate which is straight throughout. the length thereof and an outer plate which has its lower part 'deflected inwardly and securedto the lower part of the companion inner plate while its upper-part'is deflectedoutwardly so as to form an intervening space between the same and the adjacent outer part of the .inner plate, and a pulley pivotally mounted in each of said spaces between the upper parts of the plates of each of said sections, and a counterbalancing weight mounted on each pulley block between the upper parts of the inner plates thereof; a r V 3. A hoisting bucket comprising two scoops which have their inner opposing parts pivotally connected and pulley blocks pivoteach of said spaces between the upper parts of the plates of each of'said sections, and a counterbalancing weight mounted on each pulley block between the upper parts of the inner plates thereof and composed of a pluralit-y of platesarranged side by side;

4. A hoisting bucket comprising two 7 scoops which have their inner opposing parts pivotally connected and pulley blocks pivotally connected respectively with-the inner. parts of said scoops, each, of said pulley blocks comprising two sectionseac'h of which consists of an inner upright plate which is straight throughout the length thereof and an outer plate which has its lower part deflected inwardly and secured to the lower part of the companion inner plate while its upper part is deflected outwardly so as to form an intervening space bet-ween the same and the adjacent outer;part of the inner plate, and a pulley pivotally mounted in" each ofsaid spaces between the upper partsv of the plates of each of said sections, and a counterbalancing weight mounted. on each pulley block between the upper parts of the inner plates thereof and having its opposite sides constructed to form stops for engagement by the adjacent upper edges of the scoops for limitingthe opening movement thereof;

5. A hoisting bucket comprising two scoops which have theirinner opposing parts pivotally connected and pulley blocks pivotally connected respectively with the inner parts of said scoops, each of'said pulley blocks comprising two sections each of which consists of an inner upright plate which is straightthroughoutthe vlength thereofand an outer plate which has its lower part deflected inwardly and secured to the lower part of the com anioninner plate while its upper part is d eflected outwardly so as to form an intervening space between the same and theadjacent outer part-of the inner plate, and a'pulley pivotally mounted in each of said spaces between the upper parts of the plates ofeach-of said sectionspand a counterbalancing weight'mounted on each pulley block between the upper parts of'the inner plates thereof and having its opposite sides constructed to form downwardly'converging stops for engagement by the adjacent upper edges of the scoops for limiting the opening movement thereof.

6. A hoisting bucket comprising a pair of scoops each of which has a horizontal bottom and two upright side walls at opposite transverse edges of the bottom, a pivotal connection between the inner edges of the corresponding side walls of both scoops, a supporting head arranged above said, scoops, suspension links pivotally connecting said head with the outer parts of said scoops, and a lifting tackle comprising pulley blocks each connected with the pivot connecting two walls of the scoops and each having inner and outer lifting pulleys, two pairs of intermediate pulleys arranged on the sup porting head at opposite ends thereof and the members of each pair having the outer sides of their peripheries vertically in line with horizontally opposite sides of the periphery of the outer lifting pulley of one of the pulley blocks, two guide pulleys mounted on the supporting head adjacent to one pair of diametrically opposite intermediate pulleys, attaching members mounted on the sup porting head adjacent to the other pair of diametrically opposite intermediate pulleys, two leading pulleys mounted on the central part of the head and each arranged in line with an intermediate pulley which is ad j acent to an attaching member, and a lifting line having two branches each of which is connected at one end with one of said atl taching members and passes from thence successively around the inner lifting pulley, thence around the adjacent guide pulley, thence around the intermediate pulley adjacent to the guide pulley, thence around the outer lifting pulley, thence around the intermediate pulley adjacent to the companion attaching member, and thence around the companion leading pulley.

7. A hoisting bucket comprising two scoops which have their inner opposing parts pivotally connected, links pivotally connected. at their lower ends with said scoops, a supporting head pivotallv connected with the upper ends of said lllllis' and comprising two pairs of longitmlinal channels ar anged parallel and the members of each pair being separated by intervening spaces, and transverse plates secured to the upper and lower sides of said channels, and a lifting;

tackle comprising pulley blocks pivotally connected with said scoops and each having lifting pulleys, intermediate and leading pulleys mounted on said head between the channels of each pair, and a lifting line having branches connected with the head and passing around corresponding lifting, intermediate and leading pulleys.

\Vitness my hand this 4th day of December,1912.

FREDERICK W. BOND. \Vitnesses:

THEO. L. Porn, ANNA Hnrers.

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

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