US2083733A - Anchoring means - Google Patents

Anchoring means Download PDF

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Publication number
US2083733A
US2083733A US713338A US71333834A US2083733A US 2083733 A US2083733 A US 2083733A US 713338 A US713338 A US 713338A US 71333834 A US71333834 A US 71333834A US 2083733 A US2083733 A US 2083733A
Authority
US
United States
Prior art keywords
anchoring
pressure
hole
holes
shell
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
US713338A
Other languages
English (en)
Inventor
Noble Warren
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
Priority to US713338A priority Critical patent/US2083733A/en
Priority to FR786577D priority patent/FR786577A/fr
Priority to GB5872/35A priority patent/GB452487A/en
Application granted granted Critical
Publication of US2083733A publication Critical patent/US2083733A/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
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • F42D1/22—Methods for holding or positioning for blasting cartridges or tamping cartridges

Definitions

  • A. very satisfactory form of shell is loaded into the hole empty, and a high pressure is then produced therein, as by storage therein of a substantial quantity of gas at high pressure by means of a pump located near the working face. It is e one of the objects of the present invention to provide a safe and highly effective anchoring means for such a shell.
  • Another ohiect is to provide an improved automatic seal for the drill hole for preventing leakage of blasting pressure the cartridge through the hole.
  • Fig. l is a side elevational view of a blasting cartridge provided with an anchoring means constructed in accordance withv the illustrative embodiment of the invention 4
  • Fig. 2 is a longitudinal Vsection through the anchoring means proper, the fluid supply means at.. one end of the cartridge, the section being on two angularly related, radial planes.
  • Figs. 3, 4, 5, 6, T, El, and 9 are transverse seci tions through dierent parts of the anchoring means all ci these sections being taken on planes corresponding to the several .lines sms, -w-d, 5 5, etc. of Fig.
  • Fig. lil is e. detail on e somewhat enlar scale, showing the inlet valve construction..
  • the shell member E which. may be of any suit,- able construction and provided with any desired and suitable releasing means-for example, a charge releasing of the character shown in my copending application Serial No. 753,337, which l am executing of even date herewith., is mounted in a drilled. hole 2 in the mate-rial to be broken down,
  • the shell. i comprises a cas'- ing member d having a lwge, internal charge receiving chamber and adapted, in the present case, upon the attainment ci a predetermined desired maximum. .internal pressure, to release its charge through an annular passage E.
  • the shell l is provided with a, reduced externally threadedfportionl to which there is threadedly ing-collar it having holes Si for the reception of a lever ⁇ (not shown.) by means of which a tight clamping action. may he eirected.
  • a clampithread the member tl there is clamped to the shell a.
  • lil combined self-tamplng and air supply mechanism, allv of which is generally designated lil.
  • Theseltamping device comprises a tamping or hole gripping n'ieansproper and actuating means for the latter.
  • a hollow member it having an external shoulder i3 is adapted to be clamped, by means of its shoulder i3, in position to the end of the shell i.
  • the member l2 comprises a bore of two diameters, the larger bore, id, lying herein wholly within the outer end oi' the shell casing, and the smaller bore, i5, extending outwardly from the 'bore it to the rear end ci the member i3.
  • the member i2 is provided with an external buttress it', herein extending substantially throughout the entire length of the portion thereof which extends outi-v'ardiy from the clamping collar il.
  • a member i 3 pro- ⁇ viding a uid supply passage i9 opening at 20 intothe chamber ii'within the shell, ythere be ing a suitable packing provided at 2i to 'prevent leakage of fluid from within the shell into the space within the bore ill.
  • the member i0 is provided with an enlarged collar or piston portion 22 slidable within the bore itl; and rubber or other suitable packing rings 23 .and 24 are arranged to preclude leakage inwardly past the .collar v22 and outwardly along the member i8; and a small port Ni communicating with the passage i9 and having a small end-seating control valve 26 having a. longitudinal pressure .transmitting groove 21, is arranged to admit pressure ⁇ from the passage i3 into the space between the ⁇ packings 23 and 23.
  • a small elastic ring 28 surrounds the member i3 and passes over the outer end of the valve 25 and normally maintains the same seated.
  • each of the self-tamping devices includes a ring-expanding member 30 (the several members distinguished by different alphabetical exponents) having a conical surface 3i .which tapers in the direction of shell re-action. lCooperating with each oi the conical surfaces 3
  • ring 32 of rubber or other suitable material having a high 'coefficient of friction and capable of expansion 30 threadedly engage the butti-ess thread I6 and yare adapted to be positioned at any desired point along the latter.
  • Each of the members 30 is traversed by a 'plurality of holes parallel to its axis, for purpose which will. shortly be described.
  • the selfL--tamping devices also includes a pressure ring having a central opening 36 therethrough, oi suitable size to permit sliding 'upon the outside ci the threaded member i2, and these rings also have holes through them as later described. ilxpcnents are used for clarity with respect to a number the parts and holes.
  • any desired -number of self-ftamping devices may be em-v is provided so' ployed; and appropriate means that these severalldevices may be each cause'd to effect its gripping function through direct application of force thereto independently of elements of the other.l For the. purpose' of accomplishing this highly important function, a com.-
  • mon actuating element is provided, in the form of a member 40 threadedl'y engaged at 4
  • the air supply line' 42 leading from a suitable [pump or compressor,
  • the fourth cone member, inthe construction shown, isyprovided at 30 I for the purpose ofv retaining the ring 35l in posi; tion.
  • the member 30d shown in section in Fig. 3, will be observed, as hereinillustrated, to be traversed by nine holes, constituting three sets of three each, the 4holes ranged from each other and the three sets being equally spaced.
  • the holes in this member ⁇ are numbered 45B, 46s,. m, as, as, t1, and 45C," 46, 41.
  • the member 35, shown in Fig.- '1 andl 'A the member 30. shown in Fig. 4.
  • the holes ⁇ in the'member 35 are bered 51252, 53, ber 35, shown in holes in alinement members 30 and 35, and designated ,548, 55,
  • the rst three holes are designated 51,5., 58, 59, and the second series, 51, 58, 59.
  • the Imember 35 (Fig. 9) ⁇ is traversed by three holes,lin alinementwith the la'st three holes mentioned, 'in 'element 30h, and designated 60, 6I", 62; and member 30 (seeFig. 6) is traversed by ⁇ three'holes,
  • ⁇ three relatively short pusher rods all ofequal'length and numbered, severally, at 66, 61, 68, extend respectively through the guide holesl 45, 46,.41 in the member 30, andQengage, with their endsl towardfthe shell, theend surface of the member 35; and 'are adapted, when their other ends are member ⁇ 32 along the/conical vsurface of the member 40, to thrust the mem-y ber 35 longitudinally and thereby press the aoeavss therefor. In the event that there is any tendency tight engagement with the wall #of the hole.
  • Longer rods 10b, 1l", 12 extendfrom a point adjacent the pressure member l through the holesA 45h, 46, 41h in the member 30-, through the holes ABD, 49, 50", in the' memb'er 35, and through the holes 52, 531 in the member 30, and engage the end surface of the member 36,
  • a series of 'stili longer rods, 14, 15, 16 extend from a' point adjacent the pressure applying member .40, through all of the holes bearing designations terminating in a in the members Sila,v 35, 30, 35h, and Sib, and are. adapted to engage the 'end yof the member 35 to force the ring 32.a1ong the cone 30S and to expand the ring thereby into frictional engagement with the wall of the hole.
  • rings 32, 32, and 32 Any tendency of the shell to be blown out of the hole will cause the rings 32, 32, and 32 to tend to roll further up their respective conical elements, and will increase the locking force.
  • rings can be multiplied by lncreasing the number of holes. lor example, by inserting three more series of holes in the spaces between the several series illustrated, twice as l many self-tamping devices could be provided. It
  • the present varrangement is attachable to or detachable from the shell as a whole; that 'the anchoring capacity is literally l tremendous, and that it may be increased or di-v minished, as may be necessary, depending upon the nature of the material, merely by adding or removing tamping units with the actuating rods 22; and it desired, suitable provision can be made for permitting release oi pressure from the space beyond the valve 28 when it is desired to collapse the anchoring device.
  • adjustment oi the cone elements 3B permits the adapting of the anchoring or tamping devices to tapered or rippled holes; and, as also pointed out above, ir the material in which the hole is drilled is relatively soft, the number ci anchors can be increased at will.
  • An anchoring device comprising a cone, an expansible anchor ring, and including a iiuid actuated piston for forcing said ring towards the base ci' said. cone while the latter remains relatively Vstationary to expand the ring into anchoring position.
  • An anchoring device comprising a cone, an expansible anchor ring, and means for forcing said ring towards the base ci? said. cone while the latter remains relatively stationary including a pressure plate and pneumatic thrusting means therefor.
  • An anchoring device inseltibie in a Y, isole comprising expansible anchoring and he sealing means adapted to grip completely about the bore hole walls, and means embodied in said device and operated by pressure fluid for expand r; said anchoring means and for hciding the iatter expanded.
  • An anchoring device insertible in a bore hole comprising expanslble anchoring means adapted to grip completely about the bore hole ,walls and wedge means embodied in said device endoperatecl by pressure fluid for expanding said anchorlngmeans and for holding the latter expanded.
  • a blasting cartridge adapted for insertion in a blast hole and having associated. therewith an anchoring and hole sealing device having means for gripping completely about the bore 'hole walls to seal the hole, and means operable hole at the outer end of the cartridge comprising a sealing unit, and pressure duid operated means for-effecting sealing operation thereof comprising means supplied Vwith pressure :duid from the supply line to said cartridge.
  • An anchoring device comprising a tubular member, an anchoring element mounted thereon, a member movable relative to said tubular mem- -ber for moving saidanchoring element into anchoring position, and an element movable axlally within said tubular member for movingr seid moving member.
  • An anchoringvdevice comprising atubular member, an anchoring element mounted thereon, a member moveable relative tosaid tubulgr member for movingf'said anchoring element into am.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Earth Drilling (AREA)
US713338A 1934-02-28 1934-02-28 Anchoring means Expired - Lifetime US2083733A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US713338A US2083733A (en) 1934-02-28 1934-02-28 Anchoring means
FR786577D FR786577A (fr) 1934-02-28 1935-02-13 Perfectionnements aux dispositifs d'ancrage pour cartouches de mine
GB5872/35A GB452487A (en) 1934-02-28 1935-02-23 Improvements in tamping means for blasting cartridges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US713338A US2083733A (en) 1934-02-28 1934-02-28 Anchoring means

Publications (1)

Publication Number Publication Date
US2083733A true US2083733A (en) 1937-06-15

Family

ID=24865747

Family Applications (1)

Application Number Title Priority Date Filing Date
US713338A Expired - Lifetime US2083733A (en) 1934-02-28 1934-02-28 Anchoring means

Country Status (3)

Country Link
US (1) US2083733A (fr)
FR (1) FR786577A (fr)
GB (1) GB452487A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428884A (en) * 1942-04-17 1947-10-14 Hercules Powder Co Ltd Electric blasting cap

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036789B (de) * 1954-09-24 1958-08-21 Ici Ltd Gasdrucksprengvorrichtung fuer Kohle u. dgl. mit durch einen Verschlusskolben gesteuerten Gasauslassoeffnungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428884A (en) * 1942-04-17 1947-10-14 Hercules Powder Co Ltd Electric blasting cap

Also Published As

Publication number Publication date
FR786577A (fr) 1935-09-05
GB452487A (en) 1936-08-24

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