US1731686A - Javelin - Google Patents

Javelin Download PDF

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Publication number
US1731686A
US1731686A US225438A US22543827A US1731686A US 1731686 A US1731686 A US 1731686A US 225438 A US225438 A US 225438A US 22543827 A US22543827 A US 22543827A US 1731686 A US1731686 A US 1731686A
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Prior art keywords
javelin
mantle
elasticity
core
shaft
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Expired - Lifetime
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US225438A
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Rinneberg Emil
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Individual
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B65/00—Implements for throwing  ; Mechanical projectors, e.g. using spring force
    • A63B65/02—Spears or the like ; Javelins

Definitions

  • rlhe present invention has reference to javelins and relates more particularly to a new javelin structure the main components of which have approximately the same modulus of elasticity.
  • rlhe present invention eectively obviates this disadvantage by using for the core of the javelin a material the elasticity of which is substantially the same as that of the mantle material.
  • rihe javelin comprises the mantle tube orl shaft a of a suitable wood, into whose interior is closely fitted the core of a material the elasticity coefficient of which is the same as, or at least closely approximates that of, the mantle material.
  • the front shaftend may conventionally be provided with a metal tip 0.
  • lf have found that the so-called Spanish reed (fi/rando (imam), rattan or' cane, is an eminently suitable material for this purpose.
  • the reed rod is decorticated and is then suitably cemented in place in the wooden mantle shaft.
  • Such reed material is light of A weight, is highly flexible, is cheap .and can readily be shaped to fit the mantle bore, and,

Description

Oct. 15, 1929. E, RlNNEBE- RG 1,731,686
JAVELIN 'l Filed oct. 11. 1927 Patented Ust. 15, 1929 nniran sra'rlss EMIL RINNEBERG, OF rNUREJNIBERG, GERMANY JAVELIN Application filed October 11, 1927, Serial N0. 225,438, and in Germany May 12, 1927.
rlhe present invention has reference to javelins and relates more particularly to a new javelin structure the main components of which have approximately the same modulus of elasticity.
It is well known in this art that a avelin, when thrown, is apt to vibrate about its norw mal axis, and attempts have been heretofore made to overcome this drawback which seriously interferes with the proper flight of the spear, as well as to improve the rigidity of the javelin against fractures and breakage, by axially boring out the wooden javelin shaft and providing it with a light metal lining or core. rifhe use of, such a metal insertion, while reducing the natural vibrations of the javelin in flight 'to an appreciable de grec, is, however, objectionable, because it considerably increases the danger of fracture, due to the fact that the metal core and the wooden mantle shaft have different degrees of elasticity, and such a combination of materials is difficult to produce without unfav0r= ably affecting the balance of the javelin.
rlhe present invention eectively obviates this disadvantage by using for the core of the javelin a material the elasticity of which is substantially the same as that of the mantle material.
My invention will readily be understood from the accompanying. drawing which shows a javelin of my improved manufacture in longitudinal section, with the middle portions broken out to save space.
rihe javelin comprises the mantle tube orl shaft a of a suitable wood, into whose interior is closely fitted the core of a material the elasticity coefficient of which is the same as, or at least closely approximates that of, the mantle material.
The front shaftend may conventionally be provided with a metal tip 0. lf have found that the so-called Spanish reed (fi/rando (imam), rattan or' cane, is an eminently suitable material for this purpose. For use the reed rod is decorticated and is then suitably cemented in place in the wooden mantle shaft. Such reed material is light of A weight, is highly flexible, is cheap .and can readily be shaped to fit the mantle bore, and,
US225438A 1927-05-12 1927-10-11 Javelin Expired - Lifetime US1731686A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE278644X 1927-05-12

Publications (1)

Publication Number Publication Date
US1731686A true US1731686A (en) 1929-10-15

Family

ID=6028528

Family Applications (1)

Application Number Title Priority Date Filing Date
US225438A Expired - Lifetime US1731686A (en) 1927-05-12 1927-10-11 Javelin

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US (1) US1731686A (en)
FR (1) FR640993A (en)
GB (1) GB278644A (en)
NL (1) NL20224C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333643A (en) * 1980-02-19 1982-06-08 Victor Saffire Javelin
US4337940A (en) * 1980-10-23 1982-07-06 Soong Tsai C Javelin
US4404053A (en) * 1980-02-19 1983-09-13 Victor Saffire Method of making a javelin
US6585623B1 (en) * 1999-02-11 2003-07-01 Ute Hilmer-Gabcke Javelin
US20150087479A1 (en) * 2013-09-20 2015-03-26 Juris Terauds Athletic javelin with maximum moment of inertia
US20200306605A1 (en) * 2019-03-25 2020-10-01 Erick Conrad Friedman Weight adjustable throwing javelin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUT45905A (en) * 1986-08-12 1988-09-28 Miklos Nemeth Javelin

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333643A (en) * 1980-02-19 1982-06-08 Victor Saffire Javelin
US4404053A (en) * 1980-02-19 1983-09-13 Victor Saffire Method of making a javelin
US4337940A (en) * 1980-10-23 1982-07-06 Soong Tsai C Javelin
US6585623B1 (en) * 1999-02-11 2003-07-01 Ute Hilmer-Gabcke Javelin
US20150087479A1 (en) * 2013-09-20 2015-03-26 Juris Terauds Athletic javelin with maximum moment of inertia
US20200306605A1 (en) * 2019-03-25 2020-10-01 Erick Conrad Friedman Weight adjustable throwing javelin
US11607592B2 (en) * 2019-03-25 2023-03-21 Erick Conrad Friedman Weight adjustable throwing javelin

Also Published As

Publication number Publication date
FR640993A (en) 1928-07-25
GB278644A (en) 1927-10-13
NL20224C (en)

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