US1776705A - Safety device for projectiles, grenades, and the like - Google Patents

Safety device for projectiles, grenades, and the like Download PDF

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Publication number
US1776705A
US1776705A US318386A US31838628A US1776705A US 1776705 A US1776705 A US 1776705A US 318386 A US318386 A US 318386A US 31838628 A US31838628 A US 31838628A US 1776705 A US1776705 A US 1776705A
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United States
Prior art keywords
cap
grenades
projectiles
engaging
safety device
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Expired - Lifetime
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US318386A
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English (en)
Inventor
Scaglia Gregorio
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Individual
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Individual
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Publication of US1776705A publication Critical patent/US1776705A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact
    • F42C1/06—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact for any direction of impact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C14/00—Mechanical fuzes characterised by the ammunition class or type
    • F42C14/02—Mechanical fuzes characterised by the ammunition class or type for hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/04—Protective caps

Definitions

  • This invention relates to safety devices embodied in percussion ignition means used 1n pro ectiles, hand grenades, grenades 1ntended to be thrown by grenade throwers,
  • the safety member must drop from the projectile or grenade during its flight to provide for the operation of ignition means at the time of impact, and at the same time said safety member must oppose a minimum resistance against flight through air to prevent any deviation of the projectile or grenade from its required travel.
  • This invention has for'it's object a safety device which complies with all the above. requirements and maybe manufacturedand mounted in a quite easy manner.
  • Figure 2 is a top view
  • Figure 3 is a side view of a modified construction.
  • the grenade which may be of any desired construction, comprises a casing 1 (containing an explosive charge 2 and a detonator 3) on which a hollow head 4 having a slightly smaller diameter than casing 1 is K respectively.
  • the front portion 4" of the grenade has a slightly smaller diameter than body 1 of the grenade which provides a cylindrical portion intended to guide it through the thrower barrel and minimize leakage of propelling gases.
  • the safety which ignites theexplosive member which consists of a transverse member 13' located in a transverse hole 141 of part 6 and engaged between striker 7 and primer 8, is articulated or connected in floating manner with a cap 15 embracing the head4 of the grenade and having means adapted to assist its removal from said head.
  • the cap 15 is on the other hand engaged on the head 4 by a safety pin 16 intended to be removed by the operatorby manipulating ring 17 of said pin immediately before firing.
  • the cap 15 isprovided with one or more holes 18 in its front portion, and thus during the grenade flight the air entering through holes 18 in the space intermediate cap 15 and outer surface of the head 1,- ensures in anycircumstance the separation of cap 15 from head 4 and therefore the removal of transverse bar 13, even in the case the. starting speed of the grenade is low. Holes 18 reduce also the resistance suffered by the cap 15 through air along the portion of the flight in which it is connected with the grenade, the deviation produced by the said cap being thus reduced.
  • Head 4 provides preferably a central projecting portion 4 connected with a depressed annular portion a for the purpose of increasing the action of air on the internal face of cap 15.
  • cap 15 on the transverse bar 13 their interconnection may be secured with advantage by means of an intermediate part 19 hinged both to transverse bar 13 and to cap 15. Therefore at the time said cap is reversed, said cap takes up a high momentum and part 19 exerts on the transverse bar a pull in the direction of the axis of the said transverse bar, this action assisting the removal of said transverse bar by avoiding any inclined stress which could cause the seizure of said bar in its seat.
  • Said transverse bar has preferably a U- shaped cross section, as illustrated, to impart a large resistance against bending stresses and to prevent it from being bent under the action produced thereon by parts 5? on shot being fired, due to inertia of said parts 57; therefore said transverse bar cannot become engaged in the ignition device.
  • the transverse member 13 comprises a solid portion 13 adjacent its articulation with cap 15, said solid portion assisting by its weight the removal of the transverse bar.
  • cap 15 has a single opening 18 arranged along the axis-of the grenade, the edge of said hole being preferably flaring outwardly to provide a mouth 21 intended to direct air into the space intermediate head 4 and cap 15 for the purpose of assisting the removal of the cap.
  • cap 15 with transverse bar 13 is made in this embodiment by means of an arm 13 integral with said transverse bar and extending forward parallel with the grenade axis, the cap 15 being thus able to be entirely reversed and to take a position with its centre of gravity on the extension of the axis of the transverse member, this fact further assisting the removal of said transverse bar; for this purpose the edge of the cap is preferably indented or cut-off adjacent its point of articulation with the said transverse bar, as shown by in Fig. 3.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device and a cap connected with said engaging member and located'on the outside of said body, cap being perforated for admission of air intermediate said cap and body to assist the removal of said cap and engaging member during flight through air.
  • a safety device for ignition devices located in the body of'grenades, projectiles and the like comprising a member removably engaging said ignition device and a cap con nected with said engaging member at a point spaced from the axis of said engaging member and located on the outside of said body, said cap being perforated for admission of air intermediate said cap and body to assist the removal of said cap and engaging member during flight through air.
  • a safety device for ignition devices located in. the body of grenades, projectiles and the like comprising a member removably engaging said ignition device, a cap located on.
  • said cap being perforated for admission of air intermediate said cap and body to assist the removal of said cap during flight through air and a part connecting said engaging member and cap and articulated with both.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removablv engaging said ignition device, a cap connect ed, with said engaging member and located on the outside of said body, said cap having a central intake for admission of air intermediate said cap and body to assist the re moval of said cap and engaging member dur ing flight through air,
  • a safety device for ignition devices lo cated in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device, a cap located on the outside of said body, said cap having a central intake for admission of air intermediate said cap and body to assist the removal of said cap during flight through air and apart connecting said engaging member and cap and articulated with both.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device and a cap connected with said engaging member and located on the outside of said body, said body comprising a depressed annular portion under said cap and said cap having perforations in register with said depressed portion of said body for admission of air intermediate said cap and body to assist the removal of said cap and engaging member during flight through air.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removably engaging said i nition device, a cap located on the outside of said body, and a connecting part articulated with both said enga ing member and cap, said body comprising a de pressed annular portion under said cap and said cap having perforations in register with said depressed portion of said body for admission of air intermediate said cap and body to assist the removal of said cap and engaging member during flight through air.
  • a safety device for ignition devices lo cated in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device, a cap floatingly connected with said engaging member and located on the outside of said body, said cap being perforated for admission of air intermediate said cap and body to assist the removal of said cap and engaging member during flight through air and comprising a portion extending beyond the plane passing through the point of interconnection of said cap and engaging member and transverse to the axis of said body.
  • a safety device for ignitlon devices 10- cated in the body of grenades, projectiles and the like comprising a member removably engaging said 1gn1t1on device, a cap floatmgly connected with said engaging member and cated' in the body of grenades, projectiles and the like,'comprising a U-oross section member removably engaging said ignition device, a cap floatingly connected with.
  • a cap located on the outside of said body, a part connecting said engagin member and said cap and articulated with oth of them, said cap being perforated for admission of air intermediate said cap and body to assist the'removal of said can and engag 13.
  • a safety device for ignition devices located in the body of'grenades', projectiles and the like comprising a member removably engaging said ignition device, a cap floatingly connected with said engaging member and located on the outside of said body, said cap being perforated for admission of air intermediate said cap and body to assist the removal ,of said cap and engaging member during flight through air, said cap having a portionextending beyond the plane transverse to axis of said body and passing through the point o'ffloating connection of said cap with said engaging member, and a Weight on said extending portion of said cap opposite said point of floating connection.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a memberremovably engaging said ignition device and a cap located 4 on the outside of said body for its removal from said body during flight through air, said cap being articulated with said engaging member at a point spaced from the axis of said engaging member and located on the outside of said body.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device, a member embracing said body and located on the outside of said body for its removal from said body during flight through air, and a part connecting said engaging member and said outer member and articulated with both.
  • a safety device for ignition devices located in the body of grenades, projectilesand the like comprising a member removably engaging said ignition device, a 'cap located on the outside of said body, and a part connecting said engaging member and cap and articulated with both.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising. a U-cross section member removably engaging said ignition device, a cap fioatingly connected with said engaging member at a point spaced from the axis of said engaging member, said cap being located on the outside of and embracing said body.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a U-cross section mem ber removably engaging said ignition device, a cap located on the outside of said body, and a part connecting said engaging member and said cap and articulated with both of them.
  • a safety device for ignition devices located in the body of grenades, projectiles and the like comprising a member removably engaging said ignitien device, a cap floatingly connected with said engaging member and located on the outside of said body, and a weighted portion on said cap at a point opposite its point of floating connection with said engaging member.
  • a safety device for ignition devices lo cated in the body of grenades, projectiles and the like comprising a member removably engaging said ignition device, a cap floatingly connected with said engaging member and located on the outside of said body, said cap having a portion extending beyond the plane transverse to axis of said body and passing through the point of floating connection of said cap with said engaging member, and a weight on said extending portion of said cap opposite said point of floating connection.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Golf Clubs (AREA)
US318386A 1928-10-02 1928-11-10 Safety device for projectiles, grenades, and the like Expired - Lifetime US1776705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE323338T 1928-10-02

Publications (1)

Publication Number Publication Date
US1776705A true US1776705A (en) 1930-09-23

Family

ID=31894819

Family Applications (1)

Application Number Title Priority Date Filing Date
US318386A Expired - Lifetime US1776705A (en) 1928-10-02 1928-11-10 Safety device for projectiles, grenades, and the like

Country Status (6)

Country Link
US (1) US1776705A (enrdf_load_stackoverflow)
BE (1) BE355304A (enrdf_load_stackoverflow)
CH (1) CH136956A (enrdf_load_stackoverflow)
DE (1) DE547793C (enrdf_load_stackoverflow)
FR (2) FR663567A (enrdf_load_stackoverflow)
GB (1) GB323338A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE547793C (de) 1932-04-02
FR663567A (fr) 1929-08-22
GB323338A (enrdf_load_stackoverflow) 1930-01-02
CH136956A (fr) 1929-12-15
FR40319E (fr) 1932-06-09
BE355304A (enrdf_load_stackoverflow)

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