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HEAD BEAM [21 records]

Record 1 2024-09-18

English

Subject field(s)
  • Light Precision Instruments
  • Cartography
  • Industrial Techniques and Processes
CONT

In many cartographic establishments the whole of the work of the plotting and drawing stages of constructing a map projection can be done by coordinatograph... This instrument creates the two orthogonal axes of rectangular coordinates by means of one fixed steel beam and a travelling steel gantry which has a moving plotting head attached to it. Linear displacements of the gantry and the plotting head may be transferred to scales by means of lead-screws or a rack-and-pinion movement. With the aid of verniers or micrometers attached to each movement it is possible to read or plot coordinates to a least count of 0. 1 mm [millimeter] on the majority of instruments.

French

Domaine(s)
  • Petite mécanique de précision
  • Cartographie
  • Techniques industrielles
DEF

Ustensile utilisé en cartographie pour le report des coordonnées.

Spanish

Save record 1

Record 2 2022-10-18

English

Subject field(s)
  • Collaboration with the FAO
  • Commercial Fishing
CONT

The net of a beam trawl is kept open horizontally by means of a steel beam, which is supported at each end by a trawlhead. Flatsteel plates, the sole plates, are welded to the bottom of the trawl heads. When fishing, the sole plates are in direct contact with the seabed and generally slightly tilted.

French

Domaine(s)
  • Collaboration avec la FAO
  • Pêche commerciale
CONT

L'ouverture de la gueule du chalut [à perche] est assurée par une armature rigide constituée traditionnellement d'une perche en bois, et actuellement en tube métallique, qui porte à chaque extrémité un grand étrier muni de patins pourvus de semelles pour faciliter le glissement sur le fond.

Spanish

Save record 2

Record 3 2022-06-30

English

Subject field(s)
  • River and Sea Navigation
CONT

If you are drifting down wind, whether head, beam or stern to sea, the oil will gradually spread to windward with a dramatic calming effect on the sea.

French

Domaine(s)
  • Navigation fluviale et maritime

Spanish

Save record 3

Record 4 2017-11-17

English

Subject field(s)
  • Supports and Reinforcement (Construction)
  • Tunnels, Overpasses and Bridges
CONT

Bridge piers are the intermediate support systems of bridges and viaducts. ... The most common pier shapes are solid shafts, multiple columns and portal, two columns and portal, separate columns, T or hammerhead, and cantilever.

CONT

Bridge piers ... Portal frames may be used as piers under heavy steel girders, with bearings located directly over the portal legs (columns). When more than two girders are to be supported, the designer may choose to strengthen the portal cap beam or to add more columns.

French

Domaine(s)
  • Étayage et consolidation (Construction)
  • Tunnels, viaducs et ponts
DEF

Élément de charpente en bois, en acier ou en béton armé, disposé horizontalement soit pour réunir des éléments porteurs, par exemple des pieux, des colonnes ou des piles minces, soit pour supporter un tablier de pont.

CONT

Les piles. [...] Elles peuvent être constituées [...] par des colonnes à section circulaire [...] reliées en tête par une poutre chevêtre. Le nombre des colonnes varie avec la largeur de l'ouvrage car il y a en général une colonne par poutre.

Spanish

Save record 4

Record 5 2011-05-09

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A superoinferior projection of the sternoclavicular joint especially used for a dislocation of that joint. While standing the patient bends over end of x-ray table and cassette with hands on head, neck parallel to table, and chest about 45° to table. The x-ray beam is vertical to the cassette.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Incidence cranio-podale utilisée surtout dans les luxations de l'articulation sterno-claviculaire. Le patient est penché sur la table au-dessus de la cassette, les mains sur la tête, le cou parallèle à la table, le thorax formant un angle de 45° avec celle-ci. Le rayon est vertical à la cassette.

Spanish

Save record 5

Record 6 2006-06-20

English

Subject field(s)
  • Audiovisual Techniques and Equipment
  • Cinematography
DEF

A flat roller in the sound head [of a projector] designed to keep the film precisely positioned at the point where the scanning beam slit scans the sound track.

French

Domaine(s)
  • Audiovisuel (techniques et équipement)
  • Cinématographie
DEF

Tambour plat logé dans le lecteur sonore d'un projecteur, qui assure un positionnement précis de la pellicule à l'endroit où le faisceau analyseur balaie la piste sonore.

Spanish

Save record 6

Record 7 2002-06-25

English

Subject field(s)
  • Spacecraft
CONT

Optical Head(OH). The OH is typically located outside the spacecraft and performs the critical functions of generating and pointing the transmit laser beam and acquiring and tracking the received beacon and receive laser beams. Major elements of the OH are :-Coarse pointing assembly used for steering the terminal line of sight.-Optical subsystem comprising telescope, optical bench and beacon collimator.-Fine pointing assembly(FPA) : This is a mechanism used in conjunction with the tracking sensor to provide the tracking function for the terminal.-Point ahead assembly(PAA) : This is similar to the FPA and is used to introduce the required point ahead offset to the transmit beam.-Acquisition sensor(AS) : This is a wide field of view sensor used during acquisition for the identification and location of the partner terminal.-Tracking sensor(TS) : This is a fast sensor that operates in a closed loop with the FPA.

French

Domaine(s)
  • Engins spatiaux

Spanish

Save record 7

Record 8 2001-02-08

English

Subject field(s)
  • Photoelectricity and Electron Optics
  • Life Cycle (Informatics)
DEF

Display system hardware which takes the analog signals from the various function generators to control the action of the beam on the screen. The head consists of the CRT, associated amplifiers, and control circuits.

French

Domaine(s)
  • Photo-électricité et optique électronique
  • Cycle de vie (Informatique)

Spanish

Save record 8

Record 9 2000-06-12

English

Subject field(s)
  • Hand Tools
CONT

... [A tool] used to scribe a true line along the edge of a board. This tool, usually of wood, has a head which slides on a beam that is just under 8" long. By turning a thumbscrew you can fasten the head at any end along the beam. At the end of the beam, there is a projecting spur... the spur scores the required line.

French

Domaine(s)
  • Outillage à main
CONT

[...] [outil] muni d'une tige de bois graduée, d'une tête coulissante, d'une vis de serrage et d'une pointe d'acier. Il sert à tracer des lignes parallèles sur une surface de bois, à partir d'une arête. Il existe des trusquins de bois à deux pointes pour le traçage des tenons et mortaises.

Spanish

Save record 9

Record 10 1999-11-04

English

Subject field(s)
  • Tools and Equipment (Mechanics)
CONT

There are times when, for engineering reasons, a definite force must be applied to a nut or bolt head. In such cases a torque wrench must be used. For example, equal force must be applied to all the head bolts of an engine.... The three most commonly used torque wrenches are the Deflecting Beam, Dial indicating, and Micrometer Setting types.... When using the Deflecting Beam and The Dial indicating torque wrenches, the torque is read visually on a dial or scale mounted on the handle of the wrench.

French

Domaine(s)
  • Outillage (Mécanique)
DEF

Clé dynamométrique munie d'un dispositif que rend la mesure du couple indépendante de la force appliquée sur le manche de la clé, permettant de procéder au serrage de l'écrou par un effort progressif et de lire sur la réglette graduée le couple désiré (indiqué par l'aiguille); on l'utilise principalement pour vérifier la valeur des couples de serrage.

Spanish

Save record 10

Record 11 1998-06-18

English

Subject field(s)
  • Heraldry
DEF

This is frequently used as a charge, or crest, emblematical of hope, or of naval service. In old examples it is not unfrequently ringed at the point as well as at the head. The parts are thus named : the shank or beam(fr. stangue) : the stock, timber, or cross-piece(fr. trabe) : the cable(fr. gumène) : and the fluke(fr. patte). In some coats the anchor has a chain attached instead of a cable.

French

Domaine(s)
  • Héraldique

Spanish

Save record 11

Record 12 1992-09-16

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A tangential view of the posterior lateral surface of the humeral head. The patient is placed supine on the examination table with the cassette under the shoulder, and the palm of the hand of the affected shoulder is placed on top of the head. The elbow then points straight upward. The central beam is centered over the coracoid process with 10 [degrees) 0 cephalic tilt. Used to visualize the Hill-Sachs lesion in anterior dislocation of the shoulder. [From RSKEL, 1982, p. 421. ]

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Incidence tangentielle de la surface articulaire postéro-externe de la tête humérale. Le patient est en décubitus, la cassette sous l'épaule et la main sur la tête de manière à ce que le coude pointe vers le haut. Le rayon directeur, incliné de 10 ° en direction de la tête, est centré sur l'apophyse coracoïde. Cette incidence permet de visualiser la lésion de Hill-Sachs dans une luxation antérieure de l'épaule.

Spanish

Save record 12

Record 13 1992-09-16

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A projection used to evaluate the elbow joint. The patient is seated at the side of the radiographic table, with the forearm resting on its ulnar side, the elbow joint flexed 90°, and the thumb pointing upward. The central beam is directed toward the radial head at a 45° angle to the forearm. The film in this projection shows the radial head projected ventral, free of overlap by the coronoid process, which is also well demonstrated. This projection is also effective in evaluating the capitellum and humeroradial and humeroulnar articulations. [From GARTH, 1990, pp. 1. 11, 1. 13. ]

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Incidence de profil du coude. Le sujet est assis, coude fléchi à 90° sur la table, pouce en l'air. L'épaule et le coude sont sur le même plan horizontal. Le rayon incident est centré sur l'articulation du coude; le tube est incliné à 45° vers l'épaule, dans l'axe du bras. Il en résulte une projection ventrale de la tête radiale qui est débarrassée de toute superposition avec le cubitus; le capitellum est également bien dégagé. L'intérêt de cette incidence est donc de déceler dans certains cas des fractures de la tête radiale, du capitellum et de l'apophyse coronoïde non visibles sur les autres clichés. [D'après EMSQU, 31018, A10, 1986, p. 2 et JORAA, 1986, t. 67, n° 5, p. 440.]

OBS

source c : EMSQU, 31018, A10, 1986, p. 2.

Spanish

Save record 13

Record 14 1991-03-14

English

Subject field(s)
  • Dentistry
CONT

(It is) the side-to-side movement of the tube head or x-ray beam.

DEF

The angle measured within the horizontal plane at which the central ray of the x-ray beam is projected relative to a reference in the vertical or sagittal plane.

French

Domaine(s)
  • Dentisterie
CONT

Le rayonnement est toujours perpendiculaire aux dents et au film. Il existe deux sortes d'angulation, une horizontale (le tube pivote autour du point central du joug), l'autre verticale (...).

Spanish

Save record 14

Record 15 1991-03-14

English

Subject field(s)
  • Dentistry
DEF

The direction of the primary beam of radiation in relation to object and film.

CONT

When the head is in the proper position and the x-ray cone is set at 0 angulation, the central beam will be projected in a horizontal plane and be parallel to the occlusal surfaces of the teeth of the jaw being radiographed.

French

Domaine(s)
  • Dentisterie
CONT

Placement du film - Le rayonnement est toujours perpendiculaire aux dents et au film. Il existe deux sortes d'angulation, une horizontale (...).

Spanish

Save record 15

Record 16 1991-03-14

English

Subject field(s)
  • Dentistry
DEF

(It is) the up-and-down movement of the tube head or x-ray beam.

DEF

The angle measured within the vertical plane at which the central ray of the x-ray beam is projected related to a reference in the vertical or sagittal plane.

French

Domaine(s)
  • Dentisterie
CONT

Le rayonnement est toujours perpendiculaire aux dents et au film. Il existe deux sortes d'angulation, une horizontale (...), l'autre verticale qui prend des valeurs positives quand le rayonnement est dirigé vers le sol et négatives lorsque les rayons se dirigent vers le plafond.

Spanish

Save record 16

Record 17 1987-12-30

English

Subject field(s)
  • Measuring Instruments (Engineering)
  • Machine-Tooling (Metallurgy)
CONT

The mechanical-optical comparator, or the reed type comparator, combines a reed mechanism with a light beam to cast a shadow on a magnified scale to indicate the dimensional variation of the part. It consists of a base, and a column, as well as a gauging head which contains the reed mechanisms and light source.

French

Domaine(s)
  • Instruments de mesure (Ingénierie)
  • Usinage (Métallurgie)

Spanish

Save record 17

Record 18 1987-02-13

English

Subject field(s)
  • Lamps
  • Electrical Equipment (Motor Vehicles)

French

Domaine(s)
  • Lampes
  • Équipement électrique (Véhicules automobiles)

Spanish

Save record 18

Record 19 1985-08-12

English

Subject field(s)
  • Energy Transformation
  • Tidal Power Stations
  • Wave-Energy Power Plants
DEF

[a] device [which] consists of a long beam lying head to sea and kept afloat by flexible air bags attached along its top.

OBS

Developed by Prof. Michael Trench, University of Lancaster.

French

Domaine(s)
  • Transformation de l'énergie
  • Centrales marémotrices
  • Centrales houlomotrices

Spanish

Save record 19

Record 20 1983-04-13

English

Subject field(s)
  • Archaeology
OBS

in old fortifications.

French

Domaine(s)
  • Archéologie

Spanish

Save record 20

Record 21 1980-07-25

English

Subject field(s)
  • Construction Site Equipment

French

Domaine(s)
  • Matériel de chantier
OBS

madrier épais placé au-dessus d'un mur ou d'un plancher sous les pieds de ferme.

Spanish

Save record 21

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