US2498080A - Projectile equipped with fins - Google Patents

Projectile equipped with fins Download PDF

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Publication number
US2498080A
US2498080A US750253A US75025347A US2498080A US 2498080 A US2498080 A US 2498080A US 750253 A US750253 A US 750253A US 75025347 A US75025347 A US 75025347A US 2498080 A US2498080 A US 2498080A
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US
United States
Prior art keywords
projectile
joint
tail
nipple
housing
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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US750253A
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English (en)
Inventor
Jasse Joseph Raymond
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.)
BRANDT EDGAR ETS
Original Assignee
BRANDT EDGAR ETS
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 BRANDT EDGAR ETS filed Critical BRANDT EDGAR ETS
Application granted granted Critical
Publication of US2498080A publication Critical patent/US2498080A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F42B30/10—Mortar projectiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells

Definitions

  • the body of a projectile maybe manufactured in"various ways, and in particular from a forged fbar, or by moulding (semisteel), which is the ⁇ most common method or again by shrinking a steel tube.
  • the present' invention is intended to fill this need.
  • v -It' relates to' a projectile equippedl with which is'provided with a' screwthreaded rear orifice, ⁇ into lwhich is screwed .a nipple which is secured, at any rate after mounting.y to a tail supportingfthe iins, said projectile being remarkable in particular in that the con- ⁇ nection between saidk tail and the body of the projectile isv provided .with a metalloplasticfdeformable fluid-tight joint mounted in an annular housing provided inlthe bodygof zthezprojectile, ⁇ said Vjoint-'being deformedsby compression; imits housing by a circular shoulder of the nipple when arrangement' enables the sheath to become des "Thereis therefore Y. of its housing a sufficient pressure same is screwed into the body of the projectile.
  • the duid-tight joint is provided withv ai malleable metal sheath, which is open circularly on one side and contains a plastic material.
  • Fluid-tightness will be kmore eicient. as the 3 fect so long as the screwing travel of the nipple is only limited by the compression of the joint.
  • the metal sheath is preferably given a rectangular cross-section with rounded corners, whereas its housing in the projectile is of purely rectangular cross-section.
  • the joint is thus prevented, as it is deformed by the pressure of the screw when the nipple is being tightened from being pinched and producing a jamming which would make it impossible to screw the nipple right home; on the contrary, it only more completely lls the space provided for its uid-tight functions. Furthermore, the presence of the rounded corners of the sheath has the effect of providing small expansion spaces for the gases.
  • the portion which forms a nipple and which is adapted to engage in the rear orifice of the projectile body is provided with two ground cylinldrical bearing surfaces of diiferent diameters, which are axially stepped and respectively engage in corresponding circular recesses provided at the rear of said projectile body, the housing for the fluid-tight joint being formed by the recess of large diameter.
  • a circular expansion groove is provided on the periphery of the large diameter ground bearing surface.
  • the tail of the projectile may advantageously be manufactured of preferably untreated drawn steel tube, instead of using a tail' which is machined from a bar; a saving of material and an economy of manufacture is obtained thereby.
  • the coupling between the tail and the body of the projectile comprises a separate part forming a connection which is screwed right home in the projectile, ay second screw-thread provided on said connection serves for screwing on to the tail.
  • This connecting member being of small size can be mass produced with the greatest accuracy, which is an advantage when it comprises ground cylindrical portions, the accuracy of which is an important matter.
  • a layer of pitch cement may provide a final means for preventing the gases from passing.
  • FIG. is a general View, in axial section, of a projectile equipped with ns according to the invention, provided with a tail which has been machined from a bar with its nipple.
  • Fig. 6 shows, ⁇ in partial axial section, the detail of the fluid-tight coupling, after screwing the tail (Fig. 5) on the projectile.
  • the projectile shown in Fig. 1 comprises a tapered body I and a cartridge-holder tail 2 provided with fins 3; said tail is adapted to screw on the rear of the projectile body I; in the example described, it is a perforated tail of known type, made from a drawn steel tube; an intermediate member or nipple 4, which is adapted to screw, on the one hand in the front part of said tail 2, and on the other hand in the rear part of the projectile body I, acts as a connection between the tail and the projectile body. It is obvious that as shown in Figs. 5 and 6, the tail could also be of any type, machined from a bar and having at the end thereof a screw-threaded nipple.
  • the body I of the projectile is made from a tube section. Consequently it has, after shrinking and machining the front and rear ogival portions, a front orifice 5 and a rear orifice 6; said tone 6 is tapped at 'I so that the connection li, which forms a nipple, can be screwed therein.
  • the tubular tail 2 for its part, is tapped at 8 'at its front part in order to enable the connection 4 to be screwed.
  • a deformable joint 9 forms a seal for the propelling gases between the connection 4 and the body I.
  • the projectile body I has, at -the rear part thereof, two stepped concentric circular recesses: the large diameter recess I0 is comparatively deep and serves as a housing for the sealing joint 9 (Fig. 2); the inner recess II is shorter.
  • connection 4 is screw-threaded at both Yends at 8' and 'I' so that it can screw, on the one hand into the tail 2, and on the other hand into the rear orifice 6 of the body I which it completely closes; said connection is such that it can ber screwed right home in the body of the projectile with a screwing torque which is calculated proportionally to the capacity of deformation of the joint 9 and to the axial travel of the connection 4 when it is being screwed into the body I, and also to the strength of the thread 'I' and the pressure of use and of reception.
  • connection 4 is provided with two accurately machined cylindrical bearing surfaces I2 and I3, the respective diameters of which correspond, with a very slight play, to the diameters of the two recesses I 0 and II. Said bearing surfaces serve in the rst place for guiding and centring the connection 4, and consequently the tail 2 when it is being mounted, which is very important in order that the fins shall be accurately in the axis.
  • the large diameter bearing surface l2 moves like a piston inside the recess II) which acts as a cylinder.
  • the small diameter bearing surface I3 penetrates inside the recess I I and separates the fluidtight joint 9 from the screw-thread i and makes it possible to prevent said joint from jamming in the screw while it is being tightened, which might cause it to lock; it is long enough to penetrate into its housing I I before the joint 9 begins to be compressed (Fig. 2).
  • the housing of the fiuid-tight joint 9 is bounded, in the radial direction,A by the inner face I4 (Fig. 3) of the recess I0 and by the periphery I5 of the bearing surface I3, and in the axial direction, by the end I0 of the recess I0 and by the annular face I1 between the bearing surfaces I2 and I3.
  • connection 4 When the connection 4 is screwed into the rear varnish 9 of the projectile body I, the uidtight joint 9 is compressed more and more between the face I I and the end I6 of the recess I0 which serves as a housing therefor, until the fluid-tight joint 9, which is deformed by the pressure, completely lls its housing, without leaving the slightest possible leak (Fig. 4)
  • the joint 9 being completely compressed, there remains a certain empty space between the front part I3 of the bearing surface I3 and the bottom I'I of the recess II.
  • the fluid-tight joint 9 shown in Fig. 3 comprises a deformable metal sheath which is circularly slit along one of its sides, at 2
  • the existence of the rounded corners of the sheath 20 eliminates any risk of said sheath becoming pinched and jammed between the partitions of its housing while the tail is being screwed on, and little by little it assumes the final shape shown in Fig. 4 in which it completely fills its housing.
  • a circular expansion groove 23 (Fig. 2) provided on the periphery of the ground bearing surface I2 has the effect of breaking the jet of gases when the shot is fired and breaks its propagation in the direction of the uid-tight joint 9. Said groove also has the advantage of decreasing the bearing surface I2 which is thus easier to construct.
  • the connecting member 4 is covered with a coat of varnish not shown in the drawing, and a mass of pitch cement 24 lodged in the end of the body I makes the rear part of the projectile still more fluid-tight.
  • the tail 2 and its nipple 25 are in one piece, being assumed to have been machined from a bar.
  • the only dierence consists in the fact that, instead of rst screwing home the connection in the projectile, in order to press the fluid-tight joint in its housing, the joint is compressed by means of the tail itself.
  • the construction is simpler, but the mounting and the centring of the tail are not so accurate, since said tail can only be screwed until the joint 9 is completely compressed in its housing; a slight play must therefore remain between the faces I8 and I9, and the tail cannot act as a lock-nut in the manner described in the example of Figs. 1 to 4.
  • a projectile equipped with ns a hollow body provided at the rear with a tapped orifice followed in the outward direction and axially by a. rst cylindrical recess, then by a second rear one of larger diameter and connected at right angles to the former by a flat surface perpendicular to the longitudinal axis of said body, a nipple screwed in said tapped orifice and provided with two ground cylindrical bearing surfaces of different diameters, corresponding to the diameters of said recesses, said surfaces being axially stepped, connected by a iiat surface perpendicular to the longitudinal axis of said nipple and respectively engaged in said recesses and the bearing surface engaged in the first cylindrical recess having an axial length greater than that of said recess so that an annular space of rectangular longitudinal radial section is left in said second rear recess by said nipple, a deformable metallo-plastic fluid-tight annular seal located in said annular space and compressed by said
  • said metallo-plastic annular seal comprises a malleable metal sheath, provided with a circular slit and having a longitudinal radial cross-section in the form of a horseshoe, the longitudinal axis of which is parallel to the longitudinal axis of said body, and a plastic material in contact with the flat surface of the rear recess of said body through said circular slit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Earth Drilling (AREA)
US750253A 1946-06-05 1947-05-24 Projectile equipped with fins Expired - Lifetime US2498080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR933904T 1946-06-05

Publications (1)

Publication Number Publication Date
US2498080A true US2498080A (en) 1950-02-21

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ID=9455798

Family Applications (1)

Application Number Title Priority Date Filing Date
US750253A Expired - Lifetime US2498080A (en) 1946-06-05 1947-05-24 Projectile equipped with fins

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US (1) US2498080A (en(2012))
BE (1) BE473546A (en(2012))
FR (1) FR933904A (en(2012))
GB (1) GB625344A (en(2012))
NL (1) NL71162C (en(2012))

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174431A (en) * 1961-12-05 1965-03-23 Brevets Aero Mecaniques Grenades and similar devices to be launched by a firearm
US3270502A (en) * 1964-09-30 1966-09-06 Atlantic Res Corp Gas-generating devices
US3272521A (en) * 1965-03-04 1966-09-13 Patrick J S Mcnenny Fluid seal
US3375656A (en) * 1966-07-01 1968-04-02 Thiokol Chemical Corp Gas generator cartridge
US5317163A (en) * 1990-02-26 1994-05-31 Dornier Gmbh Flying decoy
US5762106A (en) * 1985-11-25 1998-06-09 National Coupling Co., Inc. Undersea hydraulic coupling and metal seal
US20050082764A1 (en) * 2003-10-20 2005-04-21 Smith Robert E.Iii Seal retainer with pressure energized metal seal members for undersea hydraulic coupling

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699722A (en) * 1951-04-06 1955-01-18 Energa Projectile
DE1099907B (de) * 1959-04-25 1961-02-16 Baronin Ilyana Von Thyssen Bor Fluegelstabilisierte Moersergranate

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US737964A (en) * 1902-08-26 1903-09-01 Lindsay Gordon Roach Shell.
US1313926A (en) * 1919-08-26 Frederick wilfrid scott stokes
FR711463A (fr) * 1930-05-22 1931-09-10 Projectile
US1872107A (en) * 1927-01-09 1932-08-16 Bond Mfg Corp Gun wad
US2083658A (en) * 1934-04-04 1937-06-15 Edwin James Hall Self-centering washer
US2315145A (en) * 1938-07-30 1943-03-30 Wauters Jean Vaned projectile
US2362534A (en) * 1940-01-12 1944-11-14 Sageb Sa Lighting projectile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1313926A (en) * 1919-08-26 Frederick wilfrid scott stokes
US737964A (en) * 1902-08-26 1903-09-01 Lindsay Gordon Roach Shell.
US1872107A (en) * 1927-01-09 1932-08-16 Bond Mfg Corp Gun wad
FR711463A (fr) * 1930-05-22 1931-09-10 Projectile
US2083658A (en) * 1934-04-04 1937-06-15 Edwin James Hall Self-centering washer
US2315145A (en) * 1938-07-30 1943-03-30 Wauters Jean Vaned projectile
US2362534A (en) * 1940-01-12 1944-11-14 Sageb Sa Lighting projectile

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174431A (en) * 1961-12-05 1965-03-23 Brevets Aero Mecaniques Grenades and similar devices to be launched by a firearm
US3270502A (en) * 1964-09-30 1966-09-06 Atlantic Res Corp Gas-generating devices
US3272521A (en) * 1965-03-04 1966-09-13 Patrick J S Mcnenny Fluid seal
US3375656A (en) * 1966-07-01 1968-04-02 Thiokol Chemical Corp Gas generator cartridge
US5762106A (en) * 1985-11-25 1998-06-09 National Coupling Co., Inc. Undersea hydraulic coupling and metal seal
US5317163A (en) * 1990-02-26 1994-05-31 Dornier Gmbh Flying decoy
US20050082764A1 (en) * 2003-10-20 2005-04-21 Smith Robert E.Iii Seal retainer with pressure energized metal seal members for undersea hydraulic coupling
US7303194B2 (en) 2003-10-20 2007-12-04 National Coupling Company, Inc. Seal retainer with pressure energized metal seal members for undersea hydraulic coupling

Also Published As

Publication number Publication date
GB625344A (en) 1949-06-27
BE473546A (en(2012))
NL71162C (en(2012))
FR933904A (fr) 1948-05-05

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