Abstract: Fireplace tongs comprising a pair of levers connected to one another between their respective ends by means of a first pivot in the manner of scissors, this first pivot defining on one side thereof operating arms and on the other side thereof extensions of the operating arms. One of the extensions constitutes a first jaw for the tongs while a second jaw, similar to the first jaw, is pivotally mounted at one of its ends to the end of the other extension away from the first pivot. A connecting link is provided of which the ends are pivotally mounted on the jaws respectively on one side and on the other side of the first and of the second pivot and adjacent thereto, whereby closing in of the arms causes tightening of the jaws and, alternatively, spreading apart of the operating arms causes loosening of the jaws.

Abstract: Water sporting boat of the pedal type comprising a surfboard having a hollow keel at the stern into which is provided a mechanical transmission connected to one end of a rotary shaft, a propeller being mounted at the other end of the shaft, outside the hollow keel. Pedal power is transferred to the mechanical transmission by a chain drive also connected to a pedalling rack fixed on the surface of the surfboard. A steering rack, provided forwardly of the pedalling rack, is connected to a rudder, at the stern of the surfboard, by a cable transmission. The steering rack includes a handle bar and the cable transmission is connected to the rudder so that the latter responds to the same steering direction as that applied by the handle bar.

Abstract: Four-stage flame retention head assembly for use in the air pipe of a fuel burner having a fuel nozzle mounted coaxially within the air pipe. This assembly comprises an outwardly diverging flame retention head mounted in the air pipe in front of the fuel nozzle. This head successively defines, starting from its smaller end, an air-and-fuel mixture chamber; a first inwardly open expansion chamber; a throttle section and an outwardly convex section defining a second expansion chamber. A primary air inlet annular plate is mounted transversely at the inlet end of the head and has a central opening circumscribed by a continuous annulus. The latter has a series of air inlet apertures and loovers over the apertures, the latter and the loovers causing swirling of the air as it enters into the mixing chamber. The first and second expansion chambers are provided with circumferentially spaced air apertures to pass air into the retention head to sustain combustion therein as well as to cool the head.

Abstract: A screw-propelled, water saddle for ride on a water surface. This water saddle is supported by two parallel floats, properly spaced apart and joined by at least one emerging cross-member. A central bar or tubing is fixed parallel to the floats at the middle of the cross-members. The saddle is mounted on the rear part of the central bar approximately at the center of the area defined by the floats while the front end of the same receives a removable propelling and steering device comprising a screw-propeller driven by a pair of pedals and a handle-bar for steering the propeller in a given direction. The rider takes place on the saddle, puts his feet on the pedals and activates the handle-bar to place the propeller in the desired direction. This screw-propelled water saddle is particularly interesting because of its simplicity, lightness, stability, speed and manageability.

Abstract: A pair of identical leggings, in one piece, is disclosed and is adapted to cover the front and sides of a cyclist's legs as well as the feet to protect the cyclist from rain, while providing adequate ventilation. The side edges of the leggings are provided with elastic strip material to ensure that the leggings remain on contact with the legs, even when the knees are flexed. Attachment means are provided at the waist and upper rear portion of each leg. Retaining means are provided all along the perimeter of the foot portion of the leggings.

Abstract: A dispenser of a granular material having a hopper containing the product and, at the base of the hopper, a device for measuring and distributing the product as well as a support to hold the device in elevated position. The device comprises a hollow cylinder and a drum rotatably mounted in the cylinder, the drum being provided with a first and a second cavity defining, at the periphery, two openings disposed side by side and extending transversely of the drum, the opening of the first cavity extending forwardly past the opening of the second cavity in one of the directions of rotation of the drum. Two feed apertures are provided side by side through the drum cylinder and in communication with the inside of the hopper, the cavities being arranged so that their openings be, in feeding position, simultaneously in registry with the feed aperture.

Abstract: An improved pedal bin of the type comprising a removable basket eccentrically suspended about an axis inside a rigid, upwardly opened box provided with a lid pivotably mounted on one upper flange of said box, in parallel relationship with respect to the suspension axis of the basket and wherein opening of lid is achieved by action of a pedal against the bottom of the basket, to swing it around its suspension axis, and thus move upwardly the end of the basket diagonally opposed to the pedal so as to tilt up the lid. In accordance with the invention the pedal forms an integral part of the basket, and the box is provided with an opening giving free access to the pedal from the outside of the box. The basket is suspended about two pivots located in its forward upper part, each pivot engaging a hinge integral to the box. Tilting up of the lid is obtained through a finger integral to the basket.

Abstract: Machine including a powered truck-like vehicle having a support base at the rear end and an apparatus for cutting a drive-in passage across a concrete curbstone, a sidewalk or the like. The apparatus is mounted on the base and essentially comprises two spaced parallel booms mounted at one end on the base and an elongated bridge structure extending between and perpendicularly to the booms, being connected to them and provided with a drive so that it can be displaced along the booms with respect to the support base of the vehicle. The booms and bridge structure are pivoted from an inoperative position where the bridge structure is above the support base to an operative position where the booms and bridge structure are swung outwardly of the support base in a position for cutting the curbstone, sidewalk or the like.

Abstract: A printing press including a printing section delivering printed sheets onto a conveying section at a receiving station, the conveying section incorporating a horizontally movable conveyor provided with grippers for grasping printed sheets discharged from the receiving station and moving them away. A rotary shaft is disposed transversely of and above the conveyor, onto which is provided a tear-line tracer assembly which projects radially and lengthwise of the shaft. This assembly includes a tracer blade having an elongated serrated straight cutting edge extending parallel to the axis of rotation of the shaft and being adapted to produce tear-lines when applied over and across the printed sheets when the latter are moved by the conveyor. A rotary support roll is provided beneath the conveyor and over the top of which printed sheets bear as they are moved by the conveyor.

Abstract: In an electronic apparatus for measuring a difference of elevation between two points, said apparatus comprising: a tube made of a flexible material; a fluid with a low viscosity completely filling said tube; two piezoelectronical pressure transducers each connected to a source of electrical power and mounted at one extremity of the tube in contact with the fluid filling said tube to produce signal a proportional to the pressure of this fluid; electronic means connected to each of said piezoelectrical pressure transducers for processing the signals received from said transducers, said processing means comprising means for generating a signal proportional to the difference between the signals received from the transducers and means for converting said generated signal into a value indicating the difference of elevation between the extremities of the tube, and means for displaying said value indicating the difference of elevation, the improvement wherein it further comprises means for generating a signal propor

Abstract: A pivoted wedge for blocking up the dumping platform of a truck in dumping position. The wedge comprises a main body in which are rotatably mounted a pair of driven rollers designed for riding on the frame of the truck and allowing translation of the body along the frame, and a driving roller designed for riding on the frame of the dumping platform. The driving roller which forms part of the wedge, positively engages the driven rollers and rotates them in the opposite direction towards the junction between the frame of the truck and the frame of the platform when the dumping platform is moving down, thus causing movement of the wedge towards said junction and self-blocking of the platform in dumping position. This wedge which automatically blocks up to the platform of a truck in dumping position in the case of failure of the hydraulic mechanism used for rising up the platform, can advantageously be used as safety device by a mechanic who has to work under the platform of a dumping truck.

Abstract: A method for the oral implantation of a dental prosthesis inside a tooth socket. This method comprises two basic steps, namely (a) creation of an artificial socket inside the maxillary bone and (b) implantation of a rigid support in the so-created socket to fix the prosthesis tooth. The first step is carried out by introducing a thin, sharp cutting tool having two cutting edges, in a predetermined direction in the depth of the bone using a thin probe as a guide for the blade, and subsequently opening the lateral walls of the hole formed by the cutting tool with a punch-shaped tool to create the artificial socket. The second step is carrying out by inserting inside the so created socket a scissors-like element comprising a pair of sharp blades each having a toothed edge, and subsequently separating these blades by introducing a thin pin between each other in such a manner that the teeth extending from the edges of the blades penetrate inside the walls or the artificial socket.

Abstract: Knock-down plant pot separable into component parts to free the plant that it contains without affecting the radicular system of the plant. It is made up of a plant-retaining wall portion formed by arcuate segments that abut one another, a holder being provided to releasably lock the segments in firm abutting relationship, this holder including locking strips that are provided outwardly of the wall segments, each strip having a groove at its lower end. The pot further includes a saucer portion for holding the wall portion. This saucer portion has an upstanding peripheral skirt and a series of horizontal thread portions projecting inwardly from the skirt and capable of being snugly received into the grooves at the bottom of the strips so that the wall portion may be held firm in the saucer portion. These thread portions are spaced from one another a distance sufficient to allow the strips to be inserted therebetween prior to be rotated for engagement of the thread portions into the grooves.