US1314700A - Dumping excavating - Google Patents
Dumping excavating Download PDFInfo
- Publication number
- US1314700A US1314700A US1314700DA US1314700A US 1314700 A US1314700 A US 1314700A US 1314700D A US1314700D A US 1314700DA US 1314700 A US1314700 A US 1314700A
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- Prior art keywords
- bucket
- cable
- bar
- excavating
- roller
- Prior art date
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- Expired - Lifetime
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- 230000007306 turnover Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000582342 Carria Species 0.000 description 1
- 241001387976 Pera Species 0.000 description 1
- 101001040754 Rattus norvegicus Guanine nucleotide-binding protein-like 3 Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/46—Dredgers; Soil-shifting machines mechanically-driven with reciprocating digging or scraping elements moved by cables or hoisting ropes ; Drives or control devices therefor
- E02F3/58—Component parts
- E02F3/60—Buckets, scrapers, or other digging elements
Definitions
- This invention relates to an excavating with various. means for hoisting and carrying the bucket, the 1nvent1on havmg reference ing and carrying the bucket and permitting it to be manipulated so asto quickly d gcharge its load; the invention havingreference also to improved means for operating and controlling the bucket in operation.
- the invention relates also fu ther tothe apparatus disclosed in my prior application for Letters Patent filedJune 2Q 1914, Serial No. 846,270, thepresent applicationbeing a continuation of said prior applicationin so far .as the subject matteriscommon toboth applications.
- An object of the invention i s to provide an improved dumpingxcxcavatingt bucket that shall be so constructed asto becapable of being conveniently and1 quickly operated and controlled, at
- a further object is to provide an improved excavating bucket whichshalhbe so 0. structed as to be free from variousmovable parts, such as drop bottoms,or do ors, .latching devices, etc., Which are liable tobecome damaged or deranged inlop eration and cause trouble and expense forrepairs.
- a still further object is to provide simple m n w e y l c tin p rat ns may be economically carried out by the minimum number of operators or attendants, which means shall be so constructed. as to be reliable and durable in use.
- bucket of the type that is designed'to operate as a scoop or drag bucket in connection 7 e g Serial u e eass.
- FIG. 1' is an elevation partially broken away showing the apparatus comprised in. the invention in working arrangement in a trench;
- Fig. 2 is a side elevationof the, improved apparatus with the bucket in dumping position, the bucket being shown in section longitudinally;
- Fig. 3 is a side elevation of the improved .bucket slightly modified as. to details being of the specific fonnvdisclosed insaid .prior application for Letters Patent;
- Fig. 4 is a side elevation of the improved bucket and apparatus showing the bucket in position for excavating, the bucket being in section longitudinally.
- a practical embodiment ofthe invention includes a suitable bucket body'which preferably comprises a bottom '1 of suitable construction and form, a back or rear end 2, a topportion d connectedwith the back, side members 4: and 5 connected to the bottom andthe back andalso to the top portion'and having forwardly-extending upper portions, and the transverse member 6 connected with the tops of the forward portions of the side members.
- the member 60f the bucket body preferably is provided with longitudinally centrally arranged ribs 7 which support a sheave Sat the forward portion thereof, the ribs having apertures 9 rearward of the sheave.
- a separate unyielding slide bar or balancing bar 10 is secured tothetop portion 3 and also to the transverse member, 6
- the bucket or scoop body provided asuitable handle or handling-devices which which be placed in either oneof the apertures 11 or be: removed. to perngit V the yoke to slide on the bar to be stoppede-ither against the member; 6" or :againstza in I stopbolt 14; which is removably' inserted oneoif theapertures ofgthebar.
- the handle ⁇ or handling de'i' ices comprise a suitable cable 17 i (so that the bucket shall have a flexible sup port, the cable -beingconne'cted either tothe 1 ward over'the bucket'body and foijwar dly;
- the handling device extends overandis supported upon'a roller 19'which is mounted in a suitable CarriageQO which may 'be variously, constructed and mova'bly supported, the carria e preferably being provid'ed with a sheayeQIat 'a suitable distance forward-bf the-froller, and in some case's-is' provided' with two wheels 22 and 23 which are supported to roll on'a slack-line 'ri'a'ge '20 is prov-ided jw'itli a single" centrally I *arranged wheell'or 'sheave27 to be supported on a cable 28 which 'rnaybe yariously raised or lowered, as by Ineansof a crane boom;
- v'the branch 32 extending underthe sheave '8 and thence to" the cable or handlingflevice '17 and jrislconnected' thereto at suitable uistanc'e from the" end tha't'f the connect 111g devicelfif' Thefline 01 cabl'e,29 ⁇ -1nay be variously eperated for dragging the; bucket, as will be understood; andfin some eases the i bran'cli 32 i's'fprovid'ed with a hook or icon V necting device 33"which ⁇ is-detachably connected w'ithjthe lineor cable2 9, as by means era, link 34; eonneaea thereto; I
- the upper forward portion ofthe body has a transversemember 6.
- the body is provided V with suitable handle or handling device ,adapted to: ride on a roller orpulleyand to be stopped at either one of the different t may bedesired.
- the handling devlce is composed of aflstifl; metallic pointsftoltiltingly sn'pport the bucketbody, V "to balance the body or toiover -balance it, as t I barwliich issuitably bent andf has connect- ;ing -"n1'e'1nbers, and 36" secured to the mem-' ber G a'nd theback ZT'respectivelyQ.thedevice ghavi'nga crook;37 whichis-located proxifrnity to the forward portion ';of: the bucket vice"havingialsofa-crook 38 ad “'j'ajcj'entitd the rear endbf the body; the crooks V "being adapted to be supportedon the'roller onsheave 19,1and theih an'dli'ng device hasjan eye lug device 39' connected thereto for- "ward of "the'f-crook 87 'whereby
- the cable 29 may be manipulated so' as toenable thebranch'32 to draw upthe forwardend of 'thebucket body, by means of the sheaves 8; -causingftheforwardportionof the: cable 17 T and'21, further tightening ofithe branch 32 vto be flexed forwardlyfas shown in Figikt, while the forward'end of 'thezbucket may be 7 "further elevatedj sd as to be inf position: 'soinewhat asrepresentedin Fig. 3 to-iretain -1ts'load.
- Incase'the bucket body is provided 7 *withthe rigid handle, when the carriage is elevated the roller; 19 follows” the inclined “under side of "bar 40 to thecrook or; crotch 375' after which i-the bucket is carried” :2 or I upward by the roller.
- the carriage is drawn forward and stopped the cable 29. is caused to continue forward movement so as to draw the branch 32, or the branch is independently drawn forward, if necessary to over-balance the bucket body forwardly,
- the branch 32 draws the handle forward over the roller 19 until the crook 38 is brought on to the roller so as to support the bucket as it tilts forward and discharges its load. In either case the bucket is caused to turn over forwardly with promptness so as to quickly discharge its load. The bucket is returned to the excavation and the operations repeated as may be required.
- the bucket is required to handle sticky mud or soil which may adhere to the bucket in attempting to discharge the load, it will be an advantage to permit the yoke 12 to freely slide along the bar 10, and permit the cable 32 to draw the yoke forward to the member 6 when filling the bucket, so that when the bucket is turned to an inclined angle to begin discharging its lead the bar 10 will slip through the yoke and let the bucket rapidly descend until the rear portion 3 of the bucket engages the yoke and causes the bucket to abruptly stop in its descent, which jars the load loose from the bucket and insures ready discharge of the load.
- a similar result is obtained in the use of the bar 40 when the stop portion 38, suddenly stopped on the roller 19, causes a jar which dislodges the load.
- An excavating bucket including a bucket body with a sheave on its forward portion, a straight handling bar secured to the forward and rearward portion of the body, a handling cable connected with the rearward portion of the body and also connected with the handling bar to permit slip of the bar relatively to the cable connection, and a controlling cable extending under the sheave and connected to the handling cable adjacent to its connection with the bar.
- An excavating bucket comprising a bottom and a back end and sides connected thereto, the upper portions of the sides extending forward beyond the lower portions thereof and having a transverse member thereon, a longitudinal rib rigid on the transverse member and having apertures therein, ahandling cable connected with said back end and in one of said apertures with the rib, and means for slidingly connecting the cable with the transverse member when disconnected from the rib.
- a carriage a wheel to support the carriage, a sheave and a roller spaced a long distance apart in the carriage
- a drag bucket body having a transverse forward top member on its sides, a straight balancing bar secured rigidly to said member and also to the rear portion of the bucket body, a guide device mounted on said member, a handling cable connected with the rear portion of the bucket body and also with said bar and extending over said roller, and a controlling cable connected to said handling cable between said roller and said bar and extending directly to and under said guide device and thence to and over said sheave.
- a drag bucket comprising a bottom and sides and also a back end, a transverse member secured to said sides, a straight balancing bar having one end rigidly secured to the under side of said member and its opposite end rigidly connected with said back end, a pair of ribs rigidly secured on the upper side of said member and having apertures therein, a yoke slidingly arranged on said bar, and a handling cable connected with the back end of said bucket and having a shackle to be connected with either the yoke or the apertures in said ribs.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Description
I. L. POTTER.
DUMPING EXCAVATING BUCKET.
APPLICATION mm FEB. 9. ma.
Patented Sept. 2, 1919.
IN V EN TOR.
A TTORNEY.
more particularly to means for d rectly lit- JOSEPH nfrorrnn, or miimuliroriis, INDiANA.
hummer nxcnvermemuounr.
Specification of Letters latent. I Patented Sept. 2, 1919.
Continuation in part of application Serial 110,846,270, filedJuneQO; 1914. This application flied February 9,
To all whom it may concern:
Be it known, that I, Josnrn LHPOTTER, a citizen of the United States residing at Indianapolis, in the county of Marion and State of Indiana, have invented: a new and useful Dumping vExc ating-,13ucket, of which the following is a specification, reference being had to the accompanying drawings and totheletters and figures of reference marked thereon.
This invention relates to an excavating with various. means for hoisting and carrying the bucket, the 1nvent1on havmg reference ing and carrying the bucket and permitting it to be manipulated so asto quickly d gcharge its load; the invention havingreference also to improved means for operating and controlling the bucket in operation. The invention relates also fu ther tothe apparatus disclosed in my prior application for Letters Patent filedJune 2Q 1914, Serial No. 846,270, thepresent applicationbeing a continuation of said prior applicationin so far .as the subject matteriscommon toboth applications.
An object of the inventioni s to provide an improved dumpingxcxcavatingt bucket that shall be so constructed asto becapable of being conveniently and1 quickly operated and controlled, at
and inexpensive]. s I Another ob]ect of the invent on 1s. to provide improved means whereby to operate and control dumping excavating buckets d which shall. be simple I means of, various types of apparatus, and
especially apparatus. whereby to, hoist and carry the bucket. s
' A further object is to provide an improved excavating bucket whichshalhbe so 0. structed as to be free from variousmovable parts, such as drop bottoms,or do ors, .latching devices, etc., Which are liable tobecome damaged or deranged inlop eration and cause trouble and expense forrepairs.
A still further object is to provide simple m n w e y l c tin p rat ns may be economically carried out by the minimum number of operators or attendants, which means shall be so constructed. as to be reliable and durable in use. I
WVith. he above mentioned and other ebi ete i new, the mYQnil RfiQ lS Q ii-an after particularly described and further pointed out in the appended. claims.
bucket of the type that is designed'to :operate as a scoop or drag bucket in connection 7 e g Serial u e eass.
bucket maybe shiftedrelatively to its support-andpennitted to tilt or turn over and discharge its load. The invention consists also further in the novel parts and combinatlons and arrangements of parts as herein- Referringto the drawing, Figure 1' is an elevation partially broken away showing the apparatus comprised in. the invention in working arrangement in a trench; Fig. 2 is a side elevationof the, improved apparatus with the bucket in dumping position, the bucket being shown in section longitudinally; Fig. 3 is a side elevation of the improved .bucket slightly modified as. to details being of the specific fonnvdisclosed insaid .prior application for Letters Patent; and, Fig. 4 is a side elevation of the improved bucket and apparatus showing the bucket in position for excavating, the bucket being in section longitudinally.
In the diflerent figures of the drawing similar reference characters indicate like elements or features of construction herein referred to in detail. L I
A practical embodiment ofthe invention includes a suitable bucket body'which preferably comprises a bottom '1 of suitable construction and form, a back or rear end 2, a topportion d connectedwith the back, side members 4: and 5 connected to the bottom andthe back andalso to the top portion'and having forwardly-extending upper portions, and the transverse member 6 connected with the tops of the forward portions of the side members. For the purposes of the present invention the member 60f the bucket body preferably is provided with longitudinally centrally arranged ribs 7 which support a sheave Sat the forward portion thereof, the ribs having apertures 9 rearward of the sheave. A separate unyielding slide bar or balancing bar 10 is secured tothetop portion 3 and also to the transverse member, 6
of the bucket body so as to extend longitudi- 105 r The bucket or scoop body provided asuitable handle or handling-devices which which be placed in either oneof the apertures 11 or be: removed. to perngit V the yoke to slide on the bar to be stoppede-ither against the member; 6" or :againstza in I stopbolt 14; which is removably' inserted oneoif theapertures ofgthebar.
may be variously constructed andarr-anged as to deta ls and has connection wlth the zr -ar portion-of the bucket body. Preferably "thebody is provided 'with' an 'ea'r15 or iears at thefrear end of theibottoin 1, and'insolne "case'sqthejbackkorrear endQ has a rib 16 pa its outer side. Preferably the handle {or handling de'i' ices comprise a suitable cable 17 i (so that the bucket shall have a flexible sup port, the cable -beingconne'cted either tothe 1 ward over'the bucket'body and foijwar dly;
' am being provided with ajsu-itable jclevis or coupler 18- torper'rnit shifting of'its'con i' shown in "Figs; 1' and 2, the cable extending .fnectionwith the bucket body, and by which "dumping operationsF In sorne'casesthe car- 7 it ,is connected either with the yoke'lZ'as v shown-in Fig; 4;.6r with ribs 7 as shown: in
Figsgj 1' and 2. The handling device extends overandis supported upon'a roller 19'which is mounted in a suitable CarriageQO which may 'be variously, constructed and mova'bly supported, the carria e preferably being provid'ed with a sheayeQIat 'a suitable distance forward-bf the-froller, and in some case's-is' provided' with two wheels 22 and 23 which are supported to roll on'a slack-line 'ri'a'ge '20 is prov-ided jw'itli a single" centrally I *arranged wheell'or 'sheave27 to be supported on a cable 28 which 'rnaybe yariously raised or lowered, as by Ineansof a crane boom;
F- 'The forward portion of theibhc'liet body s dsprovidedwithdraft 1ineoricab1ei29 V i F-whichhasl'inks orbridle' portions "-30 and 31 directly connected with the extensions of the sidefmernbers'of'thebucket body and has also i. a branch 32 that-extends over the sheave 21 whereby thebranch isjguided andsupportcd,
In somecas'es the bucketb'ody is slightly may, the
and comprises suitable bottom'l,
azback 'or end 25,; and side members 4;, The upper forward portion ofthe body has a transversemember 6. The body is provided V with suitable handle or handling device ,adapted to: ride on a roller orpulleyand to be stopped at either one of the different t may bedesired. the present casethe handling devlce is composed of aflstifl; metallic pointsftoltiltingly sn'pport the bucketbody, V "to balance the body or toiover -balance it, as t I barwliich issuitably bent andf has connect- ;ing -"n1'e'1nbers, and 36" secured to the mem-' ber G a'nd theback ZT'respectivelyQ.thedevice ghavi'nga crook;37 whichis-located proxifrnity to the forward portion ';of: the bucket vice"havingialsofa-crook 38 ad "'j'ajcj'entitd the rear endbf the body; the crooks V "being adapted to be supportedon the'roller onsheave 19,1and theih an'dli'ng device hasjan eye lug device 39' connected thereto for- "ward of "the'f-crook 87 'whereby-ito draw, the
crook"' foI"w"a' -rd :IEIQHII the roller so thats'the maiaporaen io of the device shall ride upon I thefrol'le'rsff The ibucl'ret is to, be draggeclfby the 1ine-6r1cable 29 andits bridle portions;
fitheiline or cable twinge brancha32 that is "sheave carried, as above statedfbyja suitablefcarriage 20 When the main poretion which is strtighti is resting upon the rollerifl9rthe bucket body suspended f in balaiified arrangement,
n thepracticaloperatidn of: th e-ave ing bucket thecableifor supporting it is pera; I 'Inittedto be slacken'ed so' as to lower the V V bucket to -thedesired placefthe .bucketin its descentdrawingout the cable orf line 29 ;V and th'elbucket on the ground t the-cari: gemay jbefpermittedfiodescend onto the of the bucket to add weight-to the bucket" ssi'st in holding the-bucket 7 down during theidig'ging moveinent. Po-wer ibeing "appliedrto draw the cable 29.,J'itfis evident that thefbucket is thereby drawn forward substance; in some cases-the bucket being forward relatively to the supporting carriage so aslt'o' bringthebucket' body 7 j iainly under the carriage. 1 Upon drawing up the carriagei'for hoisting the load the cable 29 may be manipulated so' as toenable thebranch'32 to draw upthe forwardend of 'thebucket body, by means of the sheaves 8; -causingftheforwardportionof the: cable 17 T and'21, further tightening ofithe branch 32 vto be flexed forwardlyfas shown in Figikt, while the forward'end of 'thezbucket may be 7 "further elevatedj sd as to be inf position: 'soinewhat asrepresentedin Fig. 3 to-iretain -1ts'load. Incase'the bucket body is provided 7 *withthe rigid handle, when the carriage is elevated the roller; 19 follows" the inclined "under side of "bar 40 to thecrook or; crotch 375' after which i-the bucket is carried" :2 or I upward by the roller. When the carriage is drawn forward and stopped the cable 29. is caused to continue forward movement so as to draw the branch 32, or the branch is independently drawn forward, if necessary to over-balance the bucket body forwardly,
after which the cable or line 29 is slackened to permit the bucket to turn over forwardly and discharge its load, which position is seen in Fig. 2. In the case of the bucket having the rigid handle the branch 32 draws the handle forward over the roller 19 until the crook 38 is brought on to the roller so as to support the bucket as it tilts forward and discharges its load. In either case the bucket is caused to turn over forwardly with promptness so as to quickly discharge its load. The bucket is returned to the excavation and the operations repeated as may be required.
Then the bucket is required to handle sticky mud or soil which may adhere to the bucket in attempting to discharge the load, it will be an advantage to permit the yoke 12 to freely slide along the bar 10, and permit the cable 32 to draw the yoke forward to the member 6 when filling the bucket, so that when the bucket is turned to an inclined angle to begin discharging its lead the bar 10 will slip through the yoke and let the bucket rapidly descend until the rear portion 3 of the bucket engages the yoke and causes the bucket to abruptly stop in its descent, which jars the load loose from the bucket and insures ready discharge of the load. A similar result is obtained in the use of the bar 40 when the stop portion 38, suddenly stopped on the roller 19, causes a jar which dislodges the load.
Having thus described the invention, what is claimed as new is 1. An excavating bucket including a bucket body with a sheave on its forward portion, a straight handling bar secured to the forward and rearward portion of the body, a handling cable connected with the rearward portion of the body and also connected with the handling bar to permit slip of the bar relatively to the cable connection, and a controlling cable extending under the sheave and connected to the handling cable adjacent to its connection with the bar.
2. An excavating bucket comprising a bottom and a back end and sides connected thereto, the upper portions of the sides extending forward beyond the lower portions thereof and having a transverse member thereon, a longitudinal rib rigid on the transverse member and having apertures therein, ahandling cable connected with said back end and in one of said apertures with the rib, and means for slidingly connecting the cable with the transverse member when disconnected from the rib.
3. In excavating apparatus, the combination with a roller provided with a carriage device for carrying the roller, and a scoop body, of a sheave mounted on the forward portion of the scoop body, a balancing bar secured to said body, a handling cable connected with the rearward portion of said body and extending over said roller, means for connecting the cable either to the forward portion of said body or to said bar, and a controlling cable guided by the carriage device and extending under said sheave to and connected with the handling cable.
4. In excavating apparatus, the combination of a carriage, a wheel to support the carriage, a sheave and a roller spaced a long distance apart in the carriage, a drag bucket body having a transverse forward top member on its sides, a straight balancing bar secured rigidly to said member and also to the rear portion of the bucket body, a guide device mounted on said member, a handling cable connected with the rear portion of the bucket body and also with said bar and extending over said roller, and a controlling cable connected to said handling cable between said roller and said bar and extending directly to and under said guide device and thence to and over said sheave.
5. In excavating apparatus, a drag bucket comprising a bottom and sides and also a back end, a transverse member secured to said sides, a straight balancing bar having one end rigidly secured to the under side of said member and its opposite end rigidly connected with said back end, a pair of ribs rigidly secured on the upper side of said member and having apertures therein, a yoke slidingly arranged on said bar, and a handling cable connected with the back end of said bucket and having a shackle to be connected with either the yoke or the apertures in said ribs.
In testimony whereof, I affix my signature in presence of two witnesses.
E. T. Srnvrns, OMER S. VVI-IITEMAN.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,
Washington, D. C.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1314700A true US1314700A (en) | 1919-09-02 |
Family
ID=3382191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US1314700D Expired - Lifetime US1314700A (en) | Dumping excavating |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1314700A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446366B1 (en) | 2000-11-15 | 2002-09-10 | Esco Corporation | Dragline apparatus and bucket |
| US20030191570A1 (en) * | 2002-02-08 | 2003-10-09 | Rowlands Jeffrey C. | Dragline dump position control |
| USD501662S1 (en) | 1999-11-03 | 2005-02-08 | Cmte Development Ltd. | Portion of dragline bucket |
| US7152349B1 (en) | 1999-11-03 | 2006-12-26 | Cmte Development Limited | Dragline bucket rigging and control apparatus |
| EP3938584A4 (en) * | 2018-03-09 | 2022-12-07 | Richard V. Campbell | CABLE SHIELDING SYSTEM |
-
0
- US US1314700D patent/US1314700A/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD501662S1 (en) | 1999-11-03 | 2005-02-08 | Cmte Development Ltd. | Portion of dragline bucket |
| US7152349B1 (en) | 1999-11-03 | 2006-12-26 | Cmte Development Limited | Dragline bucket rigging and control apparatus |
| US20070006492A1 (en) * | 1999-11-03 | 2007-01-11 | Cmte Development Limited | Dragline bucket rigging and control apparatus |
| US20110088290A1 (en) * | 1999-11-03 | 2011-04-21 | Cmte Development Limited | Dragline bucket rigging and control apparatus |
| US6446366B1 (en) | 2000-11-15 | 2002-09-10 | Esco Corporation | Dragline apparatus and bucket |
| US6550163B2 (en) | 2000-11-15 | 2003-04-22 | Esco Corporation | Dragline apparatus and bucket |
| US6705031B2 (en) | 2000-11-15 | 2004-03-16 | Esco Corporation | Dragline apparatus and bucket |
| US20030191570A1 (en) * | 2002-02-08 | 2003-10-09 | Rowlands Jeffrey C. | Dragline dump position control |
| US6826466B2 (en) | 2002-02-08 | 2004-11-30 | Cmte Development Limited | Dragline dump position control |
| EP3938584A4 (en) * | 2018-03-09 | 2022-12-07 | Richard V. Campbell | CABLE SHIELDING SYSTEM |
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