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US3273940A - Mining pick - Google Patents

Mining pick Download PDF

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Publication number
US3273940A
US3273940A US373391A US37339164A US3273940A US 3273940 A US3273940 A US 3273940A US 373391 A US373391 A US 373391A US 37339164 A US37339164 A US 37339164A US 3273940 A US3273940 A US 3273940A
Authority
US
United States
Prior art keywords
pick
spraying
conduit
water
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US373391A
Other languages
English (en)
Inventor
Belugou Pierre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Charbonnages de France CDF filed Critical Charbonnages de France CDF
Application granted granted Critical
Publication of US3273940A publication Critical patent/US3273940A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor
    • E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor

Definitions

  • the present invention has for its object to produce a mining pick suitable for all kinds of machines such as coalcutting machines or boring machines, this pick being associated with a system of water injection of such a kind that the whole arrangement ensures a distribution of Water which is more effective than those known at the present time, without blockingup or choking.
  • the pick according to the invention is characterized in that it comprises a waterintake channel delivering perpendicularly into a spraying channel bored straight through the body of the pick.
  • the water intake channel comprises a nozzle discharging into the spraying channel, the said nozzle having a smaller section that that of the spraying channel.
  • the spraying channel is cylindrical at its middle and comprises a divergent portion at each of its extremities.
  • the cylindrical portion of the spraying channel is reduced to a length which is less than its diameter.
  • the water intake channel is formed by a bore pierced longitudinally in the body of the pick, the spraying channel being pierced transversely in the head of the pick in the vicinity of the cutting edge.
  • the spraying channel is perpendicular to the direction of cutting of the pick, and its axis is located on the neutral axis of the pick.
  • FIG. 1 is a section of a pick according to the invention taken along its plane of symmetry.
  • FIG. 2 is an end view with partial cross-section taken along a plane perpendicular to that preceding.
  • the water to be sprayed is distributed by the member (not shown) which carries the picks, a drum or an anger for example, by any device known per se and engaging in the extremity '11 of a waterintake channel 1 pierced in the body of the pick 2.
  • the other extremity 1-2 of the channel 1 is a nozzle of small diameter which is provided for the purpose of accelerating and spraying the jet of water.
  • the nozzle 12 delivers into a bore 3.
  • the spraying of the jet of water is accentuated by the impact of the jet of water against the surface 4 of the bore 3, and by the presence of two lateral milled portions '31 and 32.
  • the water is discharged from the pick in the form of tiny drops travelling at high speed, and these droplets are dispersed to the rear of the cutting edge of the pick in a zone in which the dust is concentrated. In this way, the dust is forced against the walls of the groove cut by the pick but does not collect in front of the cutting edge of the pick.
  • An improved mining pick associated with a Waterinjection device comprising: a water-intake conduit discharging perpendicularly into a spraying conduit pierced right through the body of said. pick, and spraying conduit having a cylindrical middle portion which has a length less than its diameter and a divergent portion at each extremity of said spraying conduit; a nozzle on said intake conduit, and discharging into said spraying conduit, said nozzle having a section smaller than that of said spraying conduit.
  • a mining pick as claimed is claim 1, in which said water-intake conduit is constituted by a passage bored longitudinally in the body of said pick, said spraying conduit being bored transversely in the head of said pick in the vicinity of the cutting edge of said pick.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nozzles (AREA)
US373391A 1963-06-20 1964-06-08 Mining pick Expired - Lifetime US3273940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR938804A FR1368318A (fr) 1963-06-20 1963-06-20 Pic d'abattage perfectionné

Publications (1)

Publication Number Publication Date
US3273940A true US3273940A (en) 1966-09-20

Family

ID=8806536

Family Applications (1)

Application Number Title Priority Date Filing Date
US373391A Expired - Lifetime US3273940A (en) 1963-06-20 1964-06-08 Mining pick

Country Status (4)

Country Link
US (1) US3273940A (fr)
BE (1) BE649497A (fr)
FR (1) FR1368318A (fr)
GB (1) GB1006819A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198098A (en) * 1977-11-16 1980-04-15 Gewerkschaft Eisenhutte Westfalia Mineral winning installations
US4254995A (en) * 1978-03-25 1981-03-10 Bochumer Eisenhutte Heintzmann Gmbh & Co. Process of and an arrangement for mining
US4443038A (en) * 1981-09-19 1984-04-17 Anderson Strathclyde Limited Mineral cutter tool having water emission deflection surface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3169104D1 (en) * 1980-11-24 1985-03-28 Padley & Venables Ltd A pick and holder assembly and a pick and a holder for such an assembly
US4652056A (en) * 1984-05-04 1987-03-24 Minnovation Limited Mineral cutting device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008768A (en) * 1933-05-29 1935-07-23 Charles J Neal Gilsonite cutting device
US2191699A (en) * 1939-01-16 1940-02-27 Henry M Stephens Rock drill
US2320610A (en) * 1940-10-21 1943-06-01 Charles W Kandle Drill bit
US2619054A (en) * 1949-03-15 1952-11-25 James S Bell Liquid fertilizer plow
US3092190A (en) * 1960-04-04 1963-06-04 Gruere Charles Large diameter earth drill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008768A (en) * 1933-05-29 1935-07-23 Charles J Neal Gilsonite cutting device
US2191699A (en) * 1939-01-16 1940-02-27 Henry M Stephens Rock drill
US2320610A (en) * 1940-10-21 1943-06-01 Charles W Kandle Drill bit
US2619054A (en) * 1949-03-15 1952-11-25 James S Bell Liquid fertilizer plow
US3092190A (en) * 1960-04-04 1963-06-04 Gruere Charles Large diameter earth drill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4198098A (en) * 1977-11-16 1980-04-15 Gewerkschaft Eisenhutte Westfalia Mineral winning installations
US4254995A (en) * 1978-03-25 1981-03-10 Bochumer Eisenhutte Heintzmann Gmbh & Co. Process of and an arrangement for mining
US4443038A (en) * 1981-09-19 1984-04-17 Anderson Strathclyde Limited Mineral cutter tool having water emission deflection surface

Also Published As

Publication number Publication date
FR1368318A (fr) 1964-07-31
BE649497A (fr) 1964-12-21
GB1006819A (en) 1965-10-06

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