GB436468A - Improvements in and relating to method and apparatus for the blasting and breaking down of material such as coal - Google Patents

Improvements in and relating to method and apparatus for the blasting and breaking down of material such as coal

Info

Publication number
GB436468A
GB436468A GB1367534A GB1367534A GB436468A GB 436468 A GB436468 A GB 436468A GB 1367534 A GB1367534 A GB 1367534A GB 1367534 A GB1367534 A GB 1367534A GB 436468 A GB436468 A GB 436468A
Authority
GB
United Kingdom
Prior art keywords
valve
container
piston
pipe
compressed gas
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
Application number
GB1367534A
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.)
SAFETY MINING CO
Original Assignee
SAFETY MINING CO
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 SAFETY MINING CO filed Critical SAFETY MINING CO
Publication of GB436468A publication Critical patent/GB436468A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • F42B3/06—Blasting cartridges, i.e. case and explosive for producing gas under pressure with re-utilisable case
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7904—Reciprocating valves
    • Y10T137/7922—Spring biased
    • Y10T137/7929—Spring coaxial with valve
    • Y10T137/7932—Valve stem extends through fixed spring abutment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

436,468. Blasting with compressed gas. SAFETY MINING CO., 307, North Michigan Avenue, Chicago, U.S.A. May 5, 1934, Nos. 13675 and 13676. Convention dates, May 27, 1933 and June 17, 1933. [Class 9 (i)] Coal or the like 2, Fig. 1, is blasted or broken down by means of a container 1 inserted into a bore-hole and supplied with a charge of compressed gas from a remote source 4, after which the supply is discontinued and the gas is released under remote control. The release may be effected in a succession of distinct discharges. The source 4 may be a compressor and may be connected to the container 1 by a pipe 3 provided with a valve 5 and a pressure gauge 6. One form of container, Fig. 3, comprises a body 7 containing a piston 16 acting as a valve for an outlet nozzle 15 and itself containing a spring loaded valve 17 normally shutting off a byepass 22. When compressed gas is admitted by pipe 3, the piston closes the nozzle 15, then valve 17 opens and the gas passes through the byepass 22 so that the container is filled on both sides of the piston and the valve 17 again closes. The release is brought about by venting the pipe 3 to the atmosphere. The drop in pressure on the rightside of the piston causes it to move and open the nozzle 15. In a modification, the inner valve 17 is dispensed with, and the piston is given a loose fit so that the compressed gas can leak past it to fill the whole container. In another modification, Fig. 4, compressed gas from a source 29 is admitted by a valve 40, pipe 38 and narrow port 36 to a small chamber 31 in the container 7 where it closes a discharge valve 29 and then leaks into the main chamber 41 through ports 32, and check valve 33. The release is performed by turning the valve 40 to vent the pipe 38 to the atmosphere. The drop in pressure in the chamber 31 causes the opening of the valve 29; but in this case, because of the narrowness of the port 36, the pressure in the chamber 31 is still strong enough to cause the valve 29 to shut again after a partial discharge, and when the pressure in the chamber 31 has fallen still more, another partial discharge occurs. In this way four or five distinct discharges diminishing in force and volume may be obtained.
GB1367534A 1933-05-27 1934-05-05 Improvements in and relating to method and apparatus for the blasting and breaking down of material such as coal Expired GB436468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67314633 US2083695A (en) 1933-05-27 1933-05-27 Blasting method and apparatus

Publications (1)

Publication Number Publication Date
GB436468A true GB436468A (en) 1935-10-11

Family

ID=24701489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1367534A Expired GB436468A (en) 1933-05-27 1934-05-05 Improvements in and relating to method and apparatus for the blasting and breaking down of material such as coal

Country Status (4)

Country Link
US (1) US2083695A (en)
FR (1) FR772902A (en)
GB (1) GB436468A (en)
NL (1) NL40654C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106018732A (en) * 2016-06-27 2016-10-12 河南理工大学 Quick releasing device for gas dynamic disaster simulator stand and testing method thereof

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619985A (en) * 1952-12-02 Ujnit
US3249177A (en) * 1961-11-13 1966-05-03 Bolt Associates Inc Acoustic wave impulse generator repeater
US4136851A (en) * 1976-08-25 1979-01-30 Chemetron Corporation Valve for fire extinguishing system of gas distribution type
US4285415A (en) * 1979-06-25 1981-08-25 Paitson John L Acoustic impulse generator
US4301731A (en) * 1979-09-12 1981-11-24 Zeto Industries, Inc. Air shooting system for the mining of coal or the like
US4497440A (en) * 1982-10-07 1985-02-05 Brownline Pipe Inc. Non-drain valve for sprinkler systems
CN103953342B (en) * 2014-04-11 2016-04-06 山东山矿测控技术有限公司 A kind of improvement carbon dioxide for colliery shatters device and assemble method
CN106593443B (en) * 2017-02-20 2019-02-15 山东山矿测控技术有限公司 A kind of carbon dioxide blasting arrangement and method for mine, rock or coal petrography

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106018732A (en) * 2016-06-27 2016-10-12 河南理工大学 Quick releasing device for gas dynamic disaster simulator stand and testing method thereof

Also Published As

Publication number Publication date
NL40654C (en) 1900-01-01
FR772902A (en) 1934-11-08
US2083695A (en) 1937-06-15

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