US1683900A - Safety device for blasting or explosive cartridges - Google Patents

Safety device for blasting or explosive cartridges Download PDF

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Publication number
US1683900A
US1683900A US208598A US20859827A US1683900A US 1683900 A US1683900 A US 1683900A US 208598 A US208598 A US 208598A US 20859827 A US20859827 A US 20859827A US 1683900 A US1683900 A US 1683900A
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US
United States
Prior art keywords
plug
safety device
blasting
lifter
bore
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
US208598A
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English (en)
Inventor
Karollus Edmund
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB1349027A external-priority patent/GB290832A/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1683900A publication Critical patent/US1683900A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/06—Unloading boreholes

Definitions

  • This invention relates to improvements in or modifications of the safety device for blasting or explosive 'cartrid es as descrlbed and claimed in my Patent 0. 1,588,427.
  • the drag-line is dispensed with, and Wltllln the end of the plug or on the top of the same arearranged projections or depressions or excavations for the application of a tool, by
  • the present invention relates to the particular construction of the tool, for withdrawing the plug and to the application of solid plugs instead of plugs provlded with a longitudinal channel.
  • FIG. 1 Several modes of carrying out the present invention are illustrated by way of example on the accompying sheet of drawings 1n which- Figs. 1 and 2 show a plug constructed ac- 30 cording to the present invention 1n longitudinal section and plan view respectively.
  • Figs. 3 and 4 illustrate a modified plug in longitudinal section and plan vlew respectively.
  • Fig. 5 shows in longitudinal section a plug constructed without a longitudinal bore.
  • Figs. 6 and 7 illustrate two different pluglifters constructed according to the present invention.
  • the plug a which accordlng to my Patent 1,588,427 is provided with a bore or channel 25 for the passage of the electric ourrent wires or of the fuse-cord, is furnished with an arrangement for engaging the lifting tool, this arrangement being illustrated by way of example in Figs. 1 to 4.
  • the bore 6 terminates in an enlarged hollow compartment 0 of such a size, that the plug-lifter can penetrate into it to a certain depth.
  • the enlarged compartment 0 1s provlded with a sheet-metal plate, which is furnished with an openlng f in its middle, for instance a rectangular. opening, so that parts d extend inwardly from two sides.
  • the rim of the said plate is turned upwards, so that a cylindric annular member 71 is formed, which is firmly secured to the in-- co-operation with the inwardly extending parts d, the plug-lifter is furnished according to my invention with a spiral-shaped extenslon Z (Fig. 6).
  • the construction is such, that the turns of the member 72. of the plug-lifter do not uninterruptedly pass into the turns of the extension Z, but a short length m is not screw threaded or spiral-shaped in any way.
  • a short wire 6 is provided,
  • the wire 0 serves for iding the ignition-line or the fuse by win mg the latter a few times around the wire.
  • This wire does not extend beyond the bore-hole as in the arrangement according to my Patent No. 1,588,427, because it is not used for removing the plug.
  • the wire and the ignition-line or fuse do not impede the operation of the forward end of the lifter, because they are pushed aside by the rotating movement of the lifter.
  • the solid arms d may be replaced by wire-arms al In this case it is of advantage to make the wire-arms d and the wire 6 of a single length of wire.
  • the lifter may be also of a more simple construction as illustrated in Fig. 7.
  • the screw-threaded part II. is provided, with extensions k, which are adapted to rest on the arms or the wires (1 and thereby prevent the forwardend of the lifter to penetrate too deep into the plug.
  • this plug is placed on top of the primer-cartridge located. in the bore-hole.
  • the detonating cap can be arranged for instance in the primer-cartridge and the ignition-line or fuse passes from the cap upward into the intermediate space between the solid plug and the wall of the bore-hole.
  • the borehole is cleared and the plug is pulled out of the same by means of the lifter in exactly the same way as described with reference to the other constructions.
  • a safety device for blasting or explosive cartridges comprising a substantially solid plug provided with a boreand projections arranged in the said bore, said'projections being formed to engage with the end of an extracting tool;
  • a safety device for blasting or explosive cartridges comprising a substantially solid plug provided with a bore which is enlarged at one of its ends, and an annular member provided with inwardly extending arms secured in the enlarged part of the bore.
  • a safety device for blasting or' explosive cartridges comprising a substantially solid plug, an excavation in the latter, and projections arranged in theexcavation, said projections being formed to engage with the end of an extracting tool.
  • a wire secured to the plug to act as a fuse-guiding means in a device as defined in claim 4, a wire secured to the plug to act as a fuse-guiding means.
  • a tool for extracting the plug of a safety device for blasting or explosive cartridges comprising a lifting portion, a smooth neck at the forward end of the latter, and an of the latter.

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  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US208598A 1925-02-24 1927-07-26 Safety device for blasting or explosive cartridges Expired - Lifetime US1683900A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1683900X 1925-02-24
GB1349027A GB290832A (en) 1927-05-19 1927-05-19 Improvements in or relating to safety devices for explosive blasting cartridges

Publications (1)

Publication Number Publication Date
US1683900A true US1683900A (en) 1928-09-11

Family

ID=25608536

Family Applications (1)

Application Number Title Priority Date Filing Date
US208598A Expired - Lifetime US1683900A (en) 1925-02-24 1927-07-26 Safety device for blasting or explosive cartridges

Country Status (2)

Country Link
US (1) US1683900A (enrdf_load_stackoverflow)
BE (2) BE320225A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030419A (en) * 1975-11-20 1977-06-21 Westinghouse Electric Corporation Insert for explosively expanding a tube into engagement with a tube sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030419A (en) * 1975-11-20 1977-06-21 Westinghouse Electric Corporation Insert for explosively expanding a tube into engagement with a tube sheet

Also Published As

Publication number Publication date
BE342644A (enrdf_load_stackoverflow)
BE320225A (enrdf_load_stackoverflow)

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