Showing papers on "Tripod (photography) published in 1979"

Universal tripod for supporting a camera or the like

Abstract: Universal tripod comprises a tripod hub, tripod legs and clamping means for the legs. The legs are independently pivotally mounted on the hub and are each arcuately movable from a closed position, in which they are clustered around the tripod axis, to an extended position in which they may extend at an angle of up to about 120 degrees from the axis. The leg clamping means comprises a locking dog for each of the legs and a single clamping member which is movable between an unlocking and a locking position. When the clamping member is in its locking position, the legs are securely clamped against arcuate movement.

Camera tripods mounting

Abstract: An improved camera tripod with a pan-head is presented in which the pivotal motion of the camera is controlled by friction resistance means which incorporate a rotor ring and at least one co-operating stator ring mounted on an axle so that the rotor keyed to the camera mounting platform rotates with it, and rotates relative to the stator which is fixed by key means to the non-pivoting part of the tripod. The rotor and stator have on their opposing faces a ring of ridges on one and a ring of grooves on the other which mate and touch at tapered sides thereof. Friction is increased by screw means on the axle which compress the rotor and stator together. The motion is made smoother by porous padding impregnated with lubricant of a viscous fluid between the contacting surfaces of the rotor and stator. The rotor and stator are loosely mounted on the axle to allow them to float somewhat and achieve their mutual alignment.

Axial solar panel tripod mount - has panels fixed to rotating leg and dis-assembles into portion package

Abstract: The demountable support for solar panels, which allows the panels to be oriented about an axis parallel to the solar axis, consists of a tripod. The three legs are connected by an articulated joint (1). The solar panels are fixed to one leg which is turned by a motor. The inclination of the panels is set by manually adjusting the length of the two rear telescopic legs. The tripod and panel fixing is telescopic or sectioned and held in place by fixing pins. The parts when demounted pack into boxes with a unit weight less than 50 kg.

Transmission for an automobile vehicle comprising two slidable homokinetic joints

Abstract: The transmission comprises two slidable tripod joints. In each joint, the tulip element is extended around the shaft of the tripod element by an abutment member which defines a concave part-spherical surface. A check member having a convex part-spherical surface fitting the concave surface is disposed around the shaft between the tripod element and the abutment member with a radial clearance which is at least equal to the amplitude of the orbital movement of the tripod element at the maximum angle of deviation of the joint. Each joint has a spring which is compressed between the inner end of its tulip element and the adjacent end of the shaft. In this way, the maximum extension of the transmission is distributed equally between the two joints and the shaft is constantly centered so that noise and wear of the check members is avoided. The invention is in particular applicable to transmissions for independent rear driving wheels of automobile vehicles.

Stabilised platform for camera tripod etc. - provides spatial orientation using three gimbal rotors with stabilising counter torques

Abstract: A stabilised platform for spatial positioning of a camera tripod, stand etc., enables appreciable rotation about three mutually perpendicular axes. It contains three rotors each with an instantaneous rotation axis perpendicular to the rotation and precission axes of a gimbal ring carrying the gimbal rotor. It has rapid stabilisation characteristics, necessary for photocells etc. Each gimbal ring is elastically fixed by a spring so that its instantaneous axis coincides with the rotation or precision axis of one other rotor. Each rotor produces a stabilising counter-torque when rotated.

Tripod with adjustable support surface for supporting various objects

Abstract: The present invention relates to a tripod with adjustable support surface for supporting various objects, wherein the stand comprises a central support provided with pivot pins for telescopic legs adapted to pivot in radial planes. According to the invention, a selection ring is mounted to rotate about the vertical axis of the support, immobilised in axial translation and limited in amplitude of rotation in order to be able to occupy at least two angular positions and this ring bears at least two sets of three stop members cooperating with end stops of the legs, these sets being offset angularly in register with the positions of the ring and defining respectively at least two different inclinations of these legs. This tripod may be used for supporting photographic, cinematographic, or video shot taking apparatus, projection apparatus, geodesic measuring instruments, antennas for emitting or receiving radioelectric waves or the like.

Camera supporting device for low angle or close-up photography

Abstract: A camera supporting device for low angle or close-up photography in which a supporting member having a stay is attached to the lower end of the elevator of a tripod. The supporting member provides a camera mount on which the camera is stably and accurately supported at a low position near the ground in its normal upright position.

Tripod homokinetic joints which have axial retaining means

Abstract: The object of the invention is to improve the performance over a period of time and ensure a constant pre-stressing force of the axial retaining device for a tripod homokinetic joint. For this purpose, surfaces carried by the tulip member, which act as bearing surfaces for part-spherical surfaces carried by the tripod of the joint, comprise recesses of concave shape and of a radius of curvature which is slightly larger than the radius of curvature of the part-spherical bearing surfaces carried by the tripod.

Portable power drive

Abstract: A lightweight power drive for threading pipe and the like includes an integral folding tripod stand. A motor casing is built into one leg of the stand, and the casing includes integral sockets in which the other two legs are hinged.

Counterbalancing device for camera on tripod - with two helical spring acting in opposite directions

Abstract: The counterbalancing device is for a film or t.v. camera mounted on a tripod head and has a rotor and a stator with a restoring spring between them. The device has two helical springs (9.sub.11 9.sub.2) acting in opposite directions, pref. of opposite hand. The comparison unit (7) has a flat side and fits inside the rotor (1) adjacent to the stator (2), the rotor and the stator being mounted on the same central axle (3). The comparison unit is made up of a hollow sheel with two T-section pieces.

Tripod type joint

Abstract: PURPOSE:Tripod type universal joint to try improving of durability and lubrecity on rolling surface, providing spiral grease groove on the contact rolling surface on the roller shape race groove and cylindrical shape race groove at least one end CONSTITUTION:In the tripod type universal joint composed of the first shaft 1 which plural tripod shaft 3 is fixed radially from shaft center, the same number of roller 5 fitted on the every tripod shaft 3 forming spherical surface on the outer surface, the second shaft 7 provided the same number of axial cylindrical race groove which outer surface of roller 5 is supported rolling, spiral grease grooves 9, 11 are formed on the above roller 5 and on the both or one contacting rolling surface of race groove 8 Thereby, the lubricating oil can be maintained in the grease grooves 9, 11, therefore wear on the rolling contacting surface an be redused, durability is improved

Fitting holding camera or flash unit onto tripod - has mounting plate with sliding jaws gripping conical head of fixing screw

Abstract: The fitting is for fixing a camera or flash unit onto a trippod by means of a screw screwed into a thread in the base of the camera or unit. The head (5) of the fixing screw (1) extends outwards like a cone. A mounting plate (11) is provided for the camera. This plate (11) has two jaws (22) horizontally slidable to grip the screw head (5) like a wedge. The jaws (22) can be coupled to a slide (20) working against the action of at least one spring (23). The slide can be key-operated.

Circular tripod stand adjustable in height and tilt - consists of frame with slits into which fit three legs, and cover plate

Abstract: The adjustable tripod is multipurpose for laboratory and domestic uses, where it can be placed on uneven ground. The tripod consists of a round frame (2, 2a) in which are fitted legs (3, 3a). When the legs are moved, they turn on the axis of the frame-ring, thereby altering the height and slant of the legs (3, 3a). The circular frame consists of a tube with a lengthwise slit in it into which the legs can be fitted. On the frame (2, 2a) is placed a cover-plate (1) which has attachment pins (1a) preventing it from slipping, even when in a tilted position.

Camera tripod head with milled fastening section - uses two hinged movement for camera and third for lighting accessories

Abstract: A photographic tripod head has three hinged tilt functions for camera and a lighting accessory. The camera platform (9) is hinged (8) with a milled fastening arrangement (12, 13). The second support section (7) is also hinged (6) and inclinable. The camera platform sandwich (7a, 9) holds another movable platform (10).

Integral camera tripod stand - has telescopic legs which fold into holder on camera base to nullify need to detach tripod

Abstract: A small tripod stand collapses to such a small size that it can be left attached to the camera when not in sue. The legs (16) are telescopic with ball and socket heads (17). The camera support (9a) also has a ball and socket arrangement (8) allowing some camera tilt. All is locked by a screw (14). The camera is fastened by its tripod bush to the tripod top which is also foldaway case arrangement for the tripod legs. Camera bush screw attachment and tripod head screw (9a, 10) are both in elongated slots to allow versatility of positioning and balance.

Camera tripod leg support system - has flat stays with forked ends fitting into sleeve sliding on central pillar

Abstract: The camera tripod has a central pillar (3) with the camera support mounted on top, passing through a collar to which are attached to tops of the three legs. A sleeve (9) which slides on the pillar lower down, is attached to three stays (6) which are connected to sleeves around the legs lower down. These stays slope downwards. Each stay is forked at the top end, with a round peg (10) protruding from each side to fit into a recess (15) each side of the sleeve. The gap between the two arms (11) of the fork is rounded, e.g. can form a parabola, and has a slot (12) at the bottom edge. The stay may be flat.

Tripod structures in fast currents

Abstract: The article deals with strong currents that can be a major difficulty in marine construction, particularly in causing oscillations and describes a solution, consisting of driving piles in tripod formation. Design concept in which all the piles for the various structures would be driven in groups of three from a working platform and connected at the top to form stable tripods is presented. Vortex spoilers in the form of perforated shrouds and radial fins were also tested. The two tripods were interconnected by a rigid wooden deck to which masses could be attached to simulate more closely a completed structure.

Tripod made of plate and method of producing same

Abstract: PURPOSE:To provide a tripod of a high durability, which has a one-piece frame portion of an improved strength and which is hardly deformed by the radiant heat from a heat source.