US768118A - Digging or dredging bucket. - Google Patents

Description

4PAT-shrimp AUG. 23, 1904.

s. FERGUSON.

D IGGING on DREDGING BUCKET.

APPLICATION FILED JULY 28`| 1903.

L T E E H s T B B H s 3 No MODEL..

PATBNTD AUG. 23, 1904.

3 SHEETS-SHEBT 2.

APPLICATION FILED JULY 28. 1903.

N0 MODEL,

wifnww.

.PATBNTUU AUG. 23, 1904,

" f". w. s. FERGUSON. UIGGING 0R DRUDGING BUCKET.

APPLICATION FILED JULY 28. 1903.

N0 MODEL.

Uv ON UNITED. STATES Patented August 28, 1904.

PATENT OFFICE.

DIGGINGV'OR DhEDelNc-r. BUCKET.

SPECIFICATION forming part of Letters' Patent No. 763,118, dated August 23, 1904. Application filed .Tuly 26J 1903. *Serial No. 167,298. (No model.)

To (LZZ whom/ it may concern:

Be it known that I, WILLIAM S. FERGUSON. a resident of Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Digging or Dredging Buckets; and I do hereby declare the following to be a full, clear, and

exact description thereof.

My invention relates to buckets for use ing, and likepurposes. i rlhe object of my invention is to provide a bucket for these purposes which will open quickly, so as to discharge theload in a nar,-

row space or area, which is then capableof being opened very wide, so as to scrape over a large area, and thus obviatethe necessity-of digging deeply in order to fill the bucket, which is so constructed that inl closing the scoops 'or blades will approach eachotheron'a comparatively straight line, so as to diminish the amount of power necessary to close the The invention also consists incertain details .f

of construction hereinafter described and claimed.

vIn the accompanying drawings, Figure 1v is a side view showing the bucket open and showing in dotted lines the path of movement in opening and closing. Showing the bucket closed. Fig. 3 is an end view of the bucket. Fig. 1 is a plan View thereof. Fig. 5 is a detail horizontal section on the line 5 5, Fig. 3,showing the guide for the toggle-links; and Fig. 6 is a detail view showing the means for connecting the scoopsuspending links to the frame.

My bucket comprises a suitable suspendingframe in which the operating mechanism is mounted and from which the scoops are suspended. rlhis frame comprises two side plates 1 and suitable cross-connecting means, such as the top bar or casting 2, and other cross-connecting means, which also serve as ropeguards, these being shown at 1, 5, and 6. The

Fig. 2 is a side view lcross-Shafts also serve to Some extent to unite the two frames. The scoops or blades are shown at 7 and 8, and these may be of the usual or any desired construction. Preferably, however, their bottom portions are compara- .tivelystraight for some distance from the scraping edge, as shown. These scoops are Y 1 .suspended from the side frames by means of 1n digging ore, coal, and other substances,dredg-v links 9, which are attached near the outer ends of the scoops, as shown, and also to the outer projecting portions of the side plates 1. The latter are made sufliciently wide, so that they projectslightly beyond the outer ends of the scoops when closed, vas shown in Fig. 2, thus guarding and protecting said scoops when the bucket is being raised up through a shaft or hatch. The side plates 1 are rounded at their upper sides', so as to guide the bucket and prcvcntitfrom getting hung when coming through a hatch or mine-shaft. 1

lIn the side plates 1 is mounted a power-wheel .shaft 12, having secured thereto or mounted thereon twopower-wheels 13 and 14., around each of which is wound a rope or cable. On. the power-wheel 13 is wound the holding-,cable 15, from which the bucket is suspended when it is desired to open the same. Around the power-wheel 14 is wound the hoisting-cable i .16 w-hich is tightened when it is-desired to close the bucket and by means of which the bucketis carried when loaded or closed. These two cables are each attached to a windingdrum on a crane, derrick, -or the like in the well-understood manner. The cables are guided at the top of the frame by'vmeans of suitable guide-sheaves'lS,` mounted; on Shafts 19, extending between the; side frames or suspended from the'top bar Or Casting 2. Also secured to the shaft 12, or at least to the power-wheels 13 and 111, are a pair of drums 2O and 21, one such drum being on each side of the bucket. On these drums are wound the closing-cables 22 and 23, two pair of these cables being employed, as shown, one on each side of the bucket. The cables 22 1pass from their drums around sheaves 24 on the scoop 7 and have their ends connected to the scoop 8, as at 25. The cables 23 pass from their drums around sheaves 26, mounted on the Scoop 8, and have their ends connected to the scoop IOO 'T at 27. 'lhe cables 22 and 23 ai'e wound ai'oiiiid their drums in the same direction. while the cables 15 and 16 are-wound around the power-wheels 13 and 14in opposite dii'ections. Consequently when the cable 16,whieh is the closing-cable, is pulled upon the powei'- wheels and di'iiins ai'e rotated in a direction to wind the cables 22 and 23 upon their di'uins, and this throug'li the ai'i'angement shown causes the scoops to be drawn toward each other and closed. The power-wheel 14 is of a much larger diameter than the drums 2O and 21. so that the power exerted on the closing'- cable 16 is multiplied a number of times, equal to the i'atio of the diameters of the closing'- drums to the power-wheel 14. Furthermore, the cables 22 and 23, passing as they do ai'ound a sheave on one scoop and having their ends attached to the other scoop, are pi'actically double,so that the power of the winding-drums is again practically doubled by this arrangement of the closing-cables. In this manner a double multiplication of the power is secui'ed, i

the first multiplication being due to the difference in the diameters of the closing powerwheel 14 and the winding-drums 2O and 21 and the second multiplication being' due to the doubling of the closing-cables 22 and 23. Also secured to the shaft 12 or to the power-wlieels i 13 and 14 is a smaller drum or spindle 30. Wound on this in a direction opposite to that in which the cables 22 and 23 ai'e wound on their drums are aV pair of opening' cables or chains 31,Whieh pass outwardly around guidesheaves 32, mounted on shafts 34, extending' between the side frames and having' their outei' ends secured to the scoops T and 8 at the rear outer ends of the latter. Preferably these members 31 will be flat link chains, as shown, foi'iiiing', in effect, a iexible metallic belt. When the drums 2O and 21 ai'e being rotated in such a direction as to wind the closing-cables 22 and 23 thereupon, the opening'- cliains 31 are being' slackened oi' paid out,thus permitting' the closing' of the buckets; but when the closing-cable 16 is slackened a sti'ain is put upon the holding-cable 15, the powerwheels 13 and 14 and drums connected thereto are rotated in the opposite direction, thus causing the unwindingl of the closing-cables 22 and 23 and the winding up of the openingchains 31, the latter sei'vingto pull the scoops ont to the dotted-line position 35 shown in Fig. 1.

By reason of the suspension of the scoops onlinks connected to them near their oiitei' ends they can be di'awn very wide open, as i shown in Fig. 1, thus giving' a very wide l i'each to the bucket, so that it vwill not have to dig' deep in order to till the sa'nie. Furthermore, by reason of the difference of dii aiiietei' between the winding-di'ums 2() and 21 and the spindle 30 the closing-cables 22 and 23 will be wound up in the closing of the bucket much more rapidly than the opeiiing'- l chains 31 are uiiwouiid. llui'thei'more, when l the scoops ai'e opened the sheaves 24 and 26 ai'e almost opposite cach other, and consequently the closing-cables will pull practically straight across the device. As a i'esiilt of these arrangements the first cii'ect of the closing movement is to cause the frontend of the scoops to swing' inwardly very rapidly, the blade of the bucket making' the sharp curve indicated at 36, so that thereafter in the further inward movement of the scoops they will move on a comparatively straight line. so that their digging or scraping' action is very ninch easiei' than if they moved in the arc of a circle.

\Vhen the scoops ai'e fully closed, the closing-cables 21 and 22 are practically doubled around the sheaves 24 and 26, respectively, and as a consequence in opening' the bucket as soon as the hoisting-rope 16 is slackeiied the meeting edges of the scoops will swing' l down quickly to the dotted-line positions inl dicated at 37, this being` due to the fact that a slight slackness in the i'opcs and 23 by reason of their leads of doubled condition enables them to materially straighten out, while the opening-cliaiiis 31 dui'ing the irst pai't of their action pull in a substantially straight line upwardly. This causes a quick tilting' of the scoops without opening them very wide, thus permitting the material to bedischargcd fi'oiii the same and in a comparatively small area.

In oi'der to guide the scoops 7 and 3 and bring their meeting' edges into contact with each otliei', l connect to each scoop on each side of the bucket a toggle-lilik 33, these links being preferably connected to the scoops at the points 25 and 27 before meiitioned. 'l`he upper ends of these toggle-links are connected to sliding heads 39, which move in vertical ways or g'iiides 4t), formed on the side plates 1. The use of these toggle-links insures the two scoops moving' towai'd each other in exi act unison, so that they meet at the central i line of the bucket and in the same horizontal plane when the bucket is closed, thus preventl ing the spilling' of material out between the scoops. The heads 3S) ai'e preferably free to i move up and down in the guides, so that the links in no mannei' interfere with the opening' and closing movements of the bucket.

i The links 9 ai'e connected to the plates 1 by l means of bolts 4l, each having' an enlarged head on one end and provided with an eni lai'ged bearing' portion 42 fitting' in the open- 1 ing' in the plates 1 and having' another bearing' portion 43 for the links il and being' provided outside of said links with a nut 44. This same construction preferably is employed in connecting the links to the scoops and may also be employed for connecting the tog'g'lelinks 38 to the scoops.

The opei'atioii of my bucket is substantially l the saine as that of buckets now in use. The

i hoisting and holding' cables 16 and 15, as be- TOO llO

fore stated, are connected to suitable drums may be carried and lowered in closed condi-A tion by suspending yit by the hoisting-cable 16 and can then be opened by slacking said cable and holding onto thecable 15. Byreason of the connection of the scoops 7 and 8 tothe frame by means of the links 9 said scoops can be drawn very wide open, thus giving an extensive reach to the bucket. The open bucket is lowered downupon the pile or bed of ore 'or other material and then the holding-'cable 15 is slackened andthe closing or hoisting cable 16'is tightened. rlhis throws the entire weight of the bucket on this one cable, causing a rol tation of the power-wheels and drums in such a direction as to wind the closingcables 22 and 23 onto their respective drums and unwind the opening-chains 31 from their spindle. By reason of the greater diameter of the drums over the spindle the closing-cables will be drawn up much more quickly than the opening-chains will be paid out, and as a consequence the lfirst effect is to cause the scoops to swing sharply inward and to then continue their closing movement ina comparatively straight line. movement the upper ends of the toggleslinks 38 move up very quickly in the guides 40, and thereafter they move up more slowly.

The entire closing movement-of the bucket is gotten lby merely continuing to wind up the hoisting-cable 16, this serving, by means of the connections described, to drawl the scoops together until their meeting edges come into contact. During this movement they are guided accurately by the toggle-links 38, and inasmuch as they move on a comparatively straight line avery powerful action is secured` Furthermore, the double multiplication of ed drums Ato rotate in the opposite direction from that in which they rotated in closing the bucket. VThe effect of this isl to quickly slackenthe closing-cables 22 and 23 and to begin winding up the opening-chains 31. As soon as the g cables 22 and 23 are slightly slackened by reason of their peculiar connection with the scoops During the first partof this g l This causesV the'poWer-Wheels Iv13) and-14 and their connect-A and-the fact that the latter are suspended near l their outer ends the meeting ends of these scoops dropdown very sharply, thus discharging the. load in a comparatively small area. The further rotation of the power-wheels in the direction specified causes the winding up of the opening-chains 31,-' thus drawing the scoops fully outward to the extreme position V shown in Fig. 1.

. The .bucket described is comparatively simple, secures a very wide opening' of the bucket. and an extremely powerful closing thereof.Y The arrangement is such that the discharge of the .load is accomplished very quickly and in v l a small space, and the4 closing movement ,thereof is on a comparatively straight line,

thus greatly aiding the digging action-thereof. The scoops, furthermore, are so guided that they move inwardly in unison and meet accurately, thus preventing the spilling of material between the same.

All the movable or working parts of'the device are well housed in the frame,.and the scoops when closed are also guarded orpro'- tected lby the projecting. frame, sothat the bucket is admirably adapted for use in shafts or hatches.'` f v Vhat-I claim is- 1. In a digging --bucket, the combination with a suspending-frame, of a pair of scoops hinged at their outer ends to said frame, a power-drum mounted in saidfframe, a'pair of closing-cables wound on said drum and one connected directly to each of said scoops, and toggle-links connected lto said scoops and having their knuckles guided in vertical Ways on saidframe.

2. 4In a, diggingbucket, the combination with a suspending-frame, of a pair of scoops hinged. at'their outer ends to said frame, a power-drum mounted in said frame, a pair 'of `closing-cables wound on said drum and one connected directly to each `of said scoops, a vertical guideway on said frame, .a sliding head in said guideway, and links having one'of their. ends connected to .said sliding head and their opposite ends connected toV said scoops.y

.3. In a digging-bucket, the'combination with a suspending-frame, of a pair ofscoops, links-hinged to the outer ends off said scoops andto the frame, a power-drum mounted inY said frame, a pairl of cables each passingaround said 'drum and around a guide on the ICO IIOy

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the other scoop, a pair of toggle-links having their free ends connected to said scoops, and a vertical guideway on the frame for guiding the knuckle-joint of said toggles.

5. In a digging-bucket, the combination witha frame, of a power-drum mounted therein,a spindle mounted to'rotate with said drum, scoops suspended from said frame by means of links, closing-cables wound on said drum and connected to said scoops, and openingchains connected to the rear ends of the scoops and passing over guide-sheaves located in the frame over the rear ends of the scoops and wound on said spindle.

6. In a digging-bucket, the combination with a suspending-frame, of a power-drum mounted therein having portions of different diameters, scoops suspended from said frame by means of links, closing-cables connected to said scoops and Wound on the portion of the drum of larger diameter, and openingchains Wound in the opposite direction on the portion of the drum of smaller diameter and connected to the outer ends of the scoops.

7. In a digging-bucket, the combination with the suspending-frame, of a power-drum mounted therein and havingv portions of different diameters, scoops suspended from the frames by means of links, closing-cables Wound on the portion of the drum of larger diameter, passing around sheaves on one scoop and having their ends connected to the other scoop, and opening-chains wound in the opposite direction on the portion of the drum of smaller diameter and connected to the outer ends of said scoops.

8. In a digging-bucket, the combination With the frame, of buckets suspended therefrom, a pair of power-Wheels mounted in said frame, hoisting' and holding' cables wound on said power-Wheels in opposite directions, a winding-drum of smaller diameter than said power-wheels and mounted to rotate there- With, and a pair of closing-cables wound on said winding-drum, each cable passing over a sheave on'one scoop and having its end attached to the other scoop.`

9. In a digging-bucket, the combination with a frame, of scoops suspended therefrom, a cross-shaft mounted in said frame, power- Wheels on said shaft, a closing-drum also on said shaft and of smaller diameter than said Wheels, hoisting and holding cables wound on the power-wheels in opposite directions, and a pair of closing-cables wound on the drum and each passing over a guide on one side of the device and attached to the scoop on the other side of the device, whereby a double multiplication of power is obtained.

10. In a digging-bucket, the combination with a suspending-frame, of a power-drum mounted therein and having' portions of different diameters, scoops suspended from the frame by means of links, closing-cables connected to the scoops and wound on the portion of the drum of larger diameter, openingchains wound in the opposite direct-ion on the portion of the drum of smaller diamete and connected to the outer ends of the scoops, a pair of toggle-links having their free ends connected to said scoops, and a vertical guide on the frame for the knuckle of said links.

l1. In a digging-bucket, the combination with a suspending-frame, of a power-drum mounted therein and having portions of diiferent diameters, scoops suspended from the frame by means of links, closing-cables wound on the portion of the drum of larger diameter and each passing over a sheave on one scoop and having its ends attached to the opposite scoop, opening-chains wound in the opposite direction on the portion of the drum of smaller diameter and passing over guide-wheels in the frame and connected to the outer ends of the scoops, a guide-link connected to each scoop, and a vertically-guided movable hloek to which the opposite ends of said links are connected.

12. In a digging-bucket, the combination with a frame, of scoops suspended therefrom by means of links, a pair of power-wheels mounted in said frame, hoisting and holding' cables wound on said wheels in opposite directions, winding-drums of smaller diameter than the power-wheels mounted in said frame to rotate therewith, closing-cables wound on said drums and connected to said scoops, a spindle of still lesser diameter mounted in the. frame to rotate with the power-wheels, and opening-chains connected to said spindle and to the outer ends of said scoops.

13. In a digging-bucket, the comhimxtion with a frame, of scoops suspended therefrom by means of links, a pair of power-wheels mounted in said frame, hoistingl and holding cables wound on said wheels in opposite directions, drums of smaller diameter than said power-wheels mounted in said frame to rotate therewith, a pair of closing 'cables wound on said drums and each passing overa sheave on one scoop and having its end attached to the opposite scoop, a guiding-link piroted to each scoop, and a vertically-guided movable block to which the opposite ends of said links are connected.

In testimony whereof I, the said lViLmAM S. FERGUSON, have hereunto set my hand.

IVILLIAM S. FERGUSON.

Witnesses:

G. H. RANKIN, RoBT. D. To'rTnN.

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