US3074070A - Explosive actuated pin driver - Google Patents
Explosive actuated pin driver Download PDFInfo
- Publication number
- US3074070A US3074070A US102341A US10234161A US3074070A US 3074070 A US3074070 A US 3074070A US 102341 A US102341 A US 102341A US 10234161 A US10234161 A US 10234161A US 3074070 A US3074070 A US 3074070A
- Authority
- US
- United States
- Prior art keywords
- cavity
- pin
- bore
- block
- barrel
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
- B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
- B25C1/16—Cartridges specially adapted for impact tools; Cartridge and bolts units
Definitions
- VIt is well known practice to use a pin designed to be driven, under the action of a gas-pressure, into hard material (such as wood, cement, concrete, etc), anda liringapparatus to do so, the barrel of which, at the rear end of the bore, is joined, through a shoulder, .to a loading chamber which is, on the rear, obturated by a cap which comprises a guide for the ⁇ tiring pin ofthe propulsive charge which is to re the pin.
- hard material such as wood, cement, concrete, etc
- the total lossof gases, at rear andfront, is such thatthe pin is driven into the material (which it has to penetrate) with a power considerably and undeterminably lower than its pre-determined value.
- the object of the present invention is to obviate to the above drawbacks.
- a pinammuntion unit in which the pin is designed to be driven, under gas pressure, into hard materials, ⁇ and, on the other hand, Aa device ofi theabovementioned type, forfiring such pins, said unit being characterized by the fact that it comprises a block made of distortable material, having, on the one hand, a rear part shaped to correspond to the shape of the loading chamber, an annular shoulder designed to come into contact with the shoulder of the rear end of the barrel, and an axial cavity designed to receive the propulsive charge, which is closed at the rear by the holder of the primer, and on the other hand, a front part forming a wad, comprising a guiding surface which corresponds to the bore of the barrel and presents, towards the front, a lodging into which is forced the rear end of the pin, to which the said front part serves as centering means, the bottom of the axial cavity being level with the shoulder, in such a way that the pressure of the gases produced by ignition of the charge,
- the said block maybe made of any distortable ,material answering to requirements, preferably, of course, some cheap ,andeasily workable material; lfhe'power of explosion to which the'block is submitted 'being rather high, there is no need of imposing high distortabilitycharacteristics, so Jthat ,the block may be made of material neither particularly elastic nor adhesive, s uh as ar e, for instance, the known polyamides.
- lFIGnl is a section view ofone embodiment, theparts being ready'for tiring.
- FIG. -2 is a-view similar t o various parts after tiring.
- FIGS. 3 and I4 are similar views showing two dilerent embodiments of themammunitivon holdingvblock.' l
- the - ⁇ firing device comprises a b arrel 1, the Vrearend of which has a cylindrical widening 2, behind which is situated the cylindrical-loading chamber 3.
- the ⁇ latter is providedyin apart of the-body 4 of -the ring device, this part having, atpits rear end, a threadupn which is screwed an obturating cap Sprovided with corresponding threads.
- This part has an 'axialfhole in which the rst one, disclosing the 4is guidedtheliring pin 6.
- pin is driven forwar d when In the .ring position disclosed ⁇ in FIG. "1, thepin-H, of l:1t-conventional type, isin axial positionfinthe rear part bore and serving as lcentering, means. -Therear part 11,-1
- the ⁇ block is ,shaped to correspond .to -thecontour .of the loading chamber 3. Therefore, it has, in impart adjacent to the front part 9, an annular surface in close contact with the shoulder 12 through which the barrel is joining, towards the rear end of the bore 8, with the cylindrical wall of the chamber 3.
- the rear part 11 is, moreover, provided a central cylindrical cavity 13, which opens to the rear. In this cavity, which is substantially level with the shoulder 12, is lodged a cartridge 14 which contains the charge of powder dosed in a convenient way, the bottom of the cartridge 14 containing the primer, being placed in the cavity and obturating it towards the rear.
- the barrel 1 is mounted in such a way that, after removal of the cap 5, it can be axially slided through the chamber 3, driving positively the block, while it cannot 'slide towards the front, this being prevented by shoulder 15 of the body 4, the front face ofthe widening 2 bearing against said shoulder 15.
- the front part 9 of the block B is designed to constitute an axial projection of the rear part 11, this projection having a cylindrical recess 16, open towards the front, in which is engaged the rear end of the pin 7, which is threaded.
- Said recess may be provided with a thread corresponding to that of the pin, so that the pin maybe screwed onto it and unscrewed.
- the rear end of the pin may be embedded in part 9.
- Said front part 9 expands, due to the inertia, until it is gas-tightly pressed against the wall of the bore -8, forming thus a wad.
- the cavity 19 which receives the gases produced by the explosion, behind the front part'y 9 of the block B, is thus hermetically obturated, towards the front as well as towards the rear, so that, without any loss of pressure, the whole volume of gas produced by explosion can act upon the pin and drive it with a well determined force out of the barrel.
- the cap 5 is unscrewed from the threaded body 4.
- the barrel 1 is then taken out, by sliding it rearwards in the body 4, thus pushing out of the loading chamber 3 the rear part 11 of the block situated in said loading chamber.
- the bottom of the cavity 13 of the block B is slightly on the downstream side with respect to the shoulder 12. This particularity is very important, because when the block B is put in place in the ring device, it presents the lower resistance section at the level of the shoulder 12, in such a way that when the shot is tired, there will remain practically nothing of the front part 9 of the block B within the barrel.
- This feature facilitates the ejection of the rear part 11 55 of this block
- the embodiment of the block shown in FIG. 3 differs from that shown in FIG. l only by the fact that the charge of powder 2% is directly in the cavity of the rear part 11 of the bloc-k B, and that this cavity is closed by a disc 21 provided with the primer, the edge 22 of this disc being lforced into an annular groove provided close t-o the edge of the cavity, in the Wall of the latter.
- the disc 21 has, consequently, the same function as the bottom of the cartridge, in the embodiment shown in FIG. 1, which bottom, in as much as itacts as support for the primer, obturates the rear part of the cavity.
- the embodiment of the block shown in FIG. 4 differs from that of FIG. 1 only bythe fact that the rear part 11a of the block Ba has the shape of a truncated cone 23, the narrow part of which is directed towards the front.
- the wall of the loading chamber provided in the body 4 must have a corresponding truncated cone shape.
- This truncated cone presents, however, at the point where it is joined with the front part 9, also an annular surface 24, which, when the device is loaded, comes into contact with the shoulder through which the barrel, at the rear end of the bore, is joined with the loading chamber.
- This shoulder is, then, because of its conical shape, smaller than the shoulder 12 of the embodiment shown in FIG. 1.
- a ring device for driving pins into hard material under gas pressure comprising a body provided with a bore, said body being provided at the rear end with a cavity coaxial with said bore, said bore opening into said cavity, a rear obturating member detachably securable in the outer end of said cavity, said cavity being of larger diameter than said bore to define a shoulder therewith at their junction, said cavity providing a chamber to receive an ammunition unit carrying the pin, a barrel positioned in said bore for sliding movement relative to said body, said barrel having a rear enlarged portion adapted to move in said cavity, said por-tion having a shoulder adapted to abut said -irst shoulder, said barrel, when actuated rearwardly following detachment of the obturating member, providing ejection of the spent ammunition unit from the cavity.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3683956 | 1956-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3074070A true US3074070A (en) | 1963-01-22 |
Family
ID=4513398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US102341A Expired - Lifetime US3074070A (en) | 1956-08-25 | 1961-03-06 | Explosive actuated pin driver |
Country Status (6)
Country | Link |
---|---|
US (1) | US3074070A (cs) |
BE (1) | BE560185A (cs) |
DE (1) | DE1293098B (cs) |
ES (1) | ES237371A1 (cs) |
FR (1) | FR1181585A (cs) |
GB (1) | GB848471A (cs) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221966A (en) * | 1963-01-11 | 1965-12-07 | Omark Industries Inc | Powder actuated tool |
US3261528A (en) * | 1963-11-06 | 1966-07-19 | Ile D Etude De Procedes De Sce | Cartridge carrier |
US3370770A (en) * | 1966-01-20 | 1968-02-27 | Olin Mathieson | Power-actuated underwater tool |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3029705A (en) * | 1959-08-18 | 1962-04-17 | Amp Inc | Closure member for the firing chamber of an explosively-operated device |
US3036307A (en) * | 1960-02-25 | 1962-05-29 | Olin Mathieson | Seal for power tool |
DE1191760B (de) * | 1961-08-03 | 1965-04-22 | Holz Elektro Feinmechanik | Kartuschenlagerbuchse und Bolzensetzgeraet zur Aufnahme derselben |
US3171224A (en) * | 1962-01-08 | 1965-03-02 | Amp Inc | Device for facilitating the removal of explosive cartridges |
CN108890578A (zh) * | 2018-08-12 | 2018-11-27 | 宜宾市南溪区科诚机电厂 | 具有耐久性击针的大威力轴向射钉器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2064503A (en) * | 1935-01-26 | 1936-12-15 | Jr Robert Temple | Cartridge |
US2395354A (en) * | 1943-12-24 | 1946-02-19 | Temple Velocity Equipment Inc | Driving tool |
US2455825A (en) * | 1944-08-15 | 1948-12-07 | Temple Velocity Equipment Inc | Explosively actuated fastening apparatus |
GB729649A (en) * | 1951-03-23 | 1955-05-11 | Remington Arms Co Inc | Improvements in or relating to ammunition for explosively operated stud-driving devices |
LU31350A1 (cs) * | 1951-09-01 | |||
BE527610A (cs) * | 1953-05-14 |
-
0
- BE BE560185D patent/BE560185A/xx unknown
-
1957
- 1957-08-20 DE DES54803A patent/DE1293098B/de active Pending
- 1957-08-23 GB GB26628/57A patent/GB848471A/en not_active Expired
- 1957-08-23 ES ES0237371A patent/ES237371A1/es not_active Expired
- 1957-08-23 FR FR1181585D patent/FR1181585A/fr not_active Expired
-
1961
- 1961-03-06 US US102341A patent/US3074070A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3221966A (en) * | 1963-01-11 | 1965-12-07 | Omark Industries Inc | Powder actuated tool |
US3261528A (en) * | 1963-11-06 | 1966-07-19 | Ile D Etude De Procedes De Sce | Cartridge carrier |
US3370770A (en) * | 1966-01-20 | 1968-02-27 | Olin Mathieson | Power-actuated underwater tool |
Also Published As
Publication number | Publication date |
---|---|
DE1293098B (de) | 1969-04-17 |
GB848471A (en) | 1960-09-14 |
BE560185A (cs) | |
FR1181585A (fr) | 1959-06-17 |
ES237371A1 (es) | 1958-02-16 |
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