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 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 mechanism for controlling the direction and amplitude of a cloth feeder in a sewing machine comprises a cam keyed on a spindle having a control button, said cam acting on an actuating arm of a control shaft of which the angular position determines the direction and amplitude of the feeder. By turning the control button, the cam angularly sets the actuating arm and hence the stitch length. When the button is turned to a given angular position, a cam profile thereon axially displaces a sliding rod to push a sliding pinion and bring a cam profile of the pinion into contact with an eccentric protuberance of the cam. The pinion is driven by the main shaft of the machine so that in said given position of the button it axially reciprocates the cam and hence automatically modulates the direction and amplitude of the cloth feeder to execute a special stitch.