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HAMMER ENERGY [7 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2026-01-08

English

Subject field(s)
  • Small Arms
DEF

Mechanical energy storage device that operates the striker or hammer of a firearm.

CONT

The internal mechanism of the snaphaunce was relatively simple. A heavy V-shaped mainspring supplied the force which activated the cock. It acted upon the cock through the medium of a lug, known as the tumbler, which was attached by a pin to the spindle on which the cock pivoted. As the cock was drawn back, the tumbler rotated and compressed the mainspring.

French

Domaine(s)
  • Armes légères
DEF

Dispositif mécanique d'accumulation de l'énergie servant à faire fonctionner le percuteur ou le chien d'une arme à feu.

CONT

A la fin du XVIIe siècle, la platine à chenapan sera fabriquée en France, en Allemagne, en Angleterre et dans les Pays-Bas. (...) Son mécanisme, moins compliqué que le "rouet", se compose d'un chien tenant entre ses mâchoires un morceau de silex destiné à frapper une plaque de batterie (...) Le chien est fixé sur une noix et est actionné par le grand ressort à l'intérieur duquel est aménagé un cran d'arrêt pour le levier commandé par la détente

OBS

ressort de percussion : terme et définition uniformisés par le Groupe de travail de terminologie des armes légères.

Spanish

Save record 1

Record 2 2022-03-30

English

Subject field(s)
  • Hand Tools
  • Equipment and Plant (Metallurgy)
CONT

Automatic centre punches have an internal spring and hammer mechanism. The user just has to apply a downward pressure with the palm of the hand to charge the spring; the stored energy is automatically discharged via the internal hammer into the work piece, forming an indentation.

French

Domaine(s)
  • Outillage à main
  • Équipement et matériels (Métallurgie)

Spanish

Save record 2

Record 3 1999-03-12

English

Subject field(s)
  • Deep Foundations
DEF

Condition reached when a pile or soil sampler being driven by a hammer has zero penetration per blow, as when the point of the pile reaches an impenetrable bottom, or when the effective energy of the hammer blow is no longer sufficient to cause penetration.

French

Domaine(s)
  • Fondations profondes
DEF

Arrêt de l'enfoncement d'un pieu par résistance du sol.

DEF

Arrêt dans l'enfoncement d'un pieu [...] qui bute ou refoule contre un obstacle trop résistant.

Spanish

Save record 3

Record 4 1990-03-12

English

Subject field(s)
  • Deep Foundations
  • Soil Mechanics (Engineering)
CONT

Many static formulas have been proposed, some being based upon Rankine’s theory of conjugate stresses in the soil, and others in which the tip and frictional resistance are added to obtain a bearing capacity.

OBS

... many engineers have concluded that it should be possible to calculate the capacity of a pile from a knowledge of the energy delivered by the hammer and the penetration of the pile under a hammer blow. The resulting expressions for pile capacity are known as pile formulas.

French

Domaine(s)
  • Fondations profondes
  • Mécanique des sols
CONT

Bien des formules statiques ont été proposées. Certaines sont basées sur la théorie de Rankine des contraintes conjuguées dans le sol; et d'autres, dans lesquelles la résistance de pointe et la résistance au frottement latéral sont additionnées pour donner la force portante.

OBS

Formules de battage : Formules donnant la charge limite d'un pieu (ou d'un pénétromètre) en fonction de ses caractéristiques et de celles de l'engin de battage d'une part, de la valeur du refus, d'autre part.

Spanish

Save record 4

Record 5 1987-06-11

English

Subject field(s)
  • Small Arms
CONT

... on "semi-automatic", the trigger could be operated with the bolt only partially forward. The hammer energy then closed the bolt and a misfire resulted.

French

Domaine(s)
  • Armes légères
CONT

Pour ce qui concerne le tir semi-automatique, nous avons noté que la détente peut être actionnée avant que la culasse n'ait achevé sa course en avant. Dans ce cas, l'énergie du chien est entièrement absorbée par la fermeture complète de la culasse et il en résulte un raté de percussion.

Spanish

Save record 5

Record 6 1982-05-27

English

Subject field(s)
  • Earthmoving
  • Road Construction Equipment
OBS

A double acting hammer utilizes steam or compressed air pressure in both raising the ram or weight and then increasing the energy of the blow by forcing the weight downward to strike the pile.

Key term(s)
  • double-acting compressed air pile hammer

French

Domaine(s)
  • Terrassement
  • Matériel de constr. (Voies de circulation)

Spanish

Save record 6

Record 7 1975-03-11

English

Subject field(s)
  • Deep Foundations
OBS

(...) a record shall be kept for each pile of hammer weight and drop, of energy per blow, type of head and packing, and number of blows per foot or inch as appropriate during the driving process.

French

Domaine(s)
  • Fondations profondes
OBS

il est tenu un -- [où] figurent: les indications [ relatives aux pieux ] aux volées de contrôle (...) le niveau de la pointe du pieu (...) les incidents (...) en cours de manutention et de battage

Spanish

Save record 7

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