Abstract: A thread-cutting device comprises a rod provided with a head portion defining an inner circular stop having a cutting edge, each side of which interfaces a slider member, the slider members being concentrically mounted on the rod. A thread introduced between the head and the end of the slider member in contact with the head is retained between the head and the end of the slider member while it passes over the stop and is cut.

Abstract: The fuze comprises a primer-carrying rotor and an inertia mass tensioning a spring under the effect of the acceleration at the start of the explosion. The inertia mass entrains the rotor at the outlet of the firing muzzle in the armed position, under the action of the spring against the retarding action of an anchor rod. The fuze comprises a reduced number of components permitting ensuring successively detonator safety, muzzle safety and a substantial trajectory safety.

Abstract: A device for transmitting signals to a fuse (1), comprising a magnetic circuit and three non-magnetic circuits. The magnetic circuit comprises a coil (5) for transmitting an energy signal which will be recovered by a coil (3) inside the fuse. The three non-magnetic circuits comprise infrared emitter receiver cells mounted on supports (12, 13, 14) outside the fuse, and on supports (6, 7, 8) inside the fuse. These cells respectively co-operate for emitting and receiving information carrying signals, which are thus separate from the energy signal.

Abstract: In order to obtain, in an electronic balance, ranges which are in a predetermined ratio, for example 1:10, there is provided a measuring arm provided with strain gauges adapted to measure the deformation of this arm when it is subjected to a constraint or force. Between the arm and a knife-edge there is disposed a measuring annulus likewise provided with strain gauges adapted to measure the deformation of this annulus when it is subjected to a weighing force. The balance is operated in such a manner that the force or mass of the weight to be measured at the moment of weighing is exerted firstly on the arm via the annulus, until the arm contacts the abutment. This determines the small measuring scale. If the weight is higher than this value, the force is subsequently exerted solely on the annulus which presents a resistance in the region of 10 times greater and determines the second measuring scale.

Abstract: A device for transmitting signals to a projectile fuse (1) by induction comprises a coil (5) for emitting an energy signal picked-up by a coil (3) inside the fuse. This coil (3) is wound on a first magnetic core (2). A second magnetic core (6) carries three receptive coils for information carrying signals. This information is emitted by three coils (19,20,21).This arrangement permits separating the transmission of the energy signals on the one hand and the information carriers on the other hand.

Abstract: In an ironing press the heating plate is suspended in a pivotal manner on the arm of the press by the intermediary of two sliders each engaged in a bore of the arm. The lower end of each slider presents a diammetrical hole engaged with a stirrup, mounted on a profile or section solid with the heating plate.Thus, when the heating plate is lowered onto the ironing board, it can adapt its position with respect to this latter, taking into account the differences in thickness of the article to be ironed.

Abstract: A safety mechanism for the trajectory for a projectile fuse.The mechanism uses a symmetrical escapement of the cylindrical dead-beat type which does not comprise an inlet lip. The balance comprises two cheeks located one on each side of the escapement wheel, a cylindrical sector being provided on each cheek. Impulses provided by the escapement wheel are transmitted alternately to one of the two sectors then to the other sector, thereby causing the balance to oscillate first in one direction and then in the opposite direction.

Abstract: A motor controller for an electric sewing machine mounted in a removable portion of the housing of the machine. The controller is actuatable by a pneumatic switch which successively closes a plurality of contacts as the air pressure to the switch is increased to enable the speed of the motor to be increased smoothly and gradually without sparking at the contacts.

Abstract: A control circuit for a direct current electric motor including a rectifying bridge for supplying the motor with direct current and a regulating circuit including a triac, the energizing angle of which is determined by a capacitor connected in series with a resistance network. An energy limiting circuit is provided including a resistance connectable in series with the resistance network and the capacitor when the voltage exceeds a predetermined value so that the motor can be operated on a 110 V or a 220 V supply.

Abstract: A sewing machine presser foot is provided with a detachable sole plate connected to the spaced apart arms of a support member by means of a compressible pin assembly secured to the arms and projecting from the sides thereof. The sole plate is provided with inclined flanges on its upper surface and aligned openings beneath the flanges. When the sole plate is moved upwardly toward the support member the projecting ends of the pin assembly are engaged by the ramps and compressed toward each other to permit the projecting ends to engage in the openings in the sole plate upon release of the compressive force on said ends.

Abstract: A zig-zag stitch sewing machine having a laterally displaceable needle, the displacements of the needle being controlled by a cam arrangement through a linkage mechanism, the cam arrangement being actuated by one or more control members, the linkage arrangement including a pivotally mounted slider, the pivotal axis for the slider being provided on a pivotal lever so that the pivotal axis is displaceable, and a connecting rod which is pivotally connected to the mounting for the needle, the connecting rod being displaceable along the slider, means being provided for displacing the pivotal axis of the slider while its free end is immobilized in one of its terminal angular positions, whereby displacement of the end of the connecting rod along the slider causes a needle carrying bar to be displaced between two terminal decentered positions.

Abstract: A mechanism for a sewing machine for enabling the manual or automatic control of the direction and of the amplitude of movement of a transporting claw guide for material to be sewn. The mechanism is driven from the main driving shaft of the sewing machine via a cam and a series of intermediate lever members connected to a rotatable shaft connected to the transporting claw guide. The control is automatically accomplished by means of a cam driven from the main driving shaft of the machine via the arrangement of levers to obtain back-and-forth movement of the claw guide or, when a cam follower is disengaged from the cam, the control can be accomplished manually without the automatic back-and-forth movement.

Abstract: A pneumatic control device for a displaceable member of an electric circuit, having a compressible air reservoir adapted and connected by a flexible conduit to an enclosure comprising the said movable member, and comprising three superposed rigid or semi-rigid members which are at least partially housed or enclosed one inside the other, and at least one member having a compressible wall and having an edge which is engaged and clamped between two of the superposed rigid or semi-rigid members; the first of said members together with the compressible walled member delimiting the air reservoir and being provided with a nozzle leading into an inner chamber which is delimited by the assembly of said three rigid or semi-rigid members; the second and third of said members delimiting a passage between them which connects the inner chamber to an annular outer chamber delimited by the second and the third rigid or semi-rigid members and open at its periphery; said flexible conduit being connected to the nozzle in the in

Abstract: A sewing machine adapted to be mounted in a support member, comprising a column mounted on a lower frame member having a free arm portion extending therefrom, said column carrying an upper arm disposed generally parallel to the free arm portion and terminating in a head in which a drive mechanism of a needle carrying bar is provided, said lower frame member being pivotally connected to a casing by means of at least two support members pivoted at one of their ends to the frame member and pivoted at their other ends to the casing, characterized in that said support members connect said lower frame member to said casing in such a manner as to permit displacement of the machine with respect to the casing between a first position in which the lower framework member and the free arm are housed in said casing, with their upper faces being generally at the level of the upper edge of the casing, and a second position in which the free arm is on the elevated position above the casing.

Abstract: A thread-tensioning device of a sewing machine comprises thread-squeezing plates between which the thread passes. A shaft applying pressure to the plates is subjected to the action of a transmission lever which is acted upon by a spring-urged ball which is moved by a control button along an arcuate path from adjacent the pivoting axis of the lever to near an end of the lever. The angle of the lever can be set to enable progressive setting of the thread tension for a constant spring pressure, or with variation of the spring pressure.