Abstract: A bicycle brake includes a pair of calipers which are provided with brake blocks and pivot about two parallel axes, and which are resiliently biassed towards a rest position and movable into an operative braking position by a flexible cable fixed within a through-hole in a member for operating the calipers and acting in a direction contained in a plane equidistant from the two pivoting axes of the calipers. The end part of the cable is pressed into the through-hole by a threaded element. To enable the cable to be mounted rapidly and easily, the operating member has a slot passing through it and opening into the through-hole, and is arranged so that the end part of the cable can be inserted into the hole through the slot by the movement of the cable in a direction peripendicular to its axis.

Abstract: A device for displaying the gear parameters of a bicycle comprises a sensor for detecting the position of the member (or members) for controlling the gear-change, and display means connected to the sensor means and able to supply a signal indicative of the ratio engaged. In a preferred embodiment, the number of teeth of the two gear-wheels (front and rear) on which the chain is engaged are displayed.

Abstract: A rear derailing device for bicycle gears comprises a first body intended to be fixed to the frame, a second body, a lower body for driving the bicycle chain, and an articulated parallelogram joint connecting the first body to the second body. The joint has end heads which are connected to the first body and the second body respectively by swivelling hinge connections. The two elements of each hinge connection have facing surfaces with frontal teeth which cooperate with each other to hold the two elements of the hinge connection in a preselected relative position. The elements can be locked in this position by a locking screw arranged to press the facing surfaces against each other.

Abstract: A device to anchor a cyclist's shoe to the pedal of a bicycle is provided, including a plate fixed to the bottom of a cyclist's shoe. The plate has front and rear engageable portions. A bicycle pedal is rotatable about a spindle; and a clip member cooperatively engages the front portion of the plate and a pivotable hook lever to cooperatively engage the rear portion of the plate. The clip member is laterally pivotable about an axis perpendicular to the foot rest surface. Portions of the hook lever and the spindle are adapted to cooperatively engage each other in a manner which prevents the pedal from rotating when the hook lever is not in engagement with the plate.

Abstract: A saddle pillar for bicycles and the like comprises a support element fixable to the bicycle frame and having a head on which a device for supporting and clamping the saddle is mounted in an adjustable position. The latter comprises a lower support and an upper bracket between which a part of the load-bearing structure of the saddle is interposed, and clamping means which urge the lower support and the upper bracket against each other and against the head of the support element to clamp the part of the load-bearing structure of the saddle. The head of the support element is provided with adjustment means for effecting a variation of the position of the device for clamping the saddle to the head of the support element after the release of the clamping means. The clamping means preferably comprise a lever device for rapid clamping and release, while the adjustment means comprise a micrometric adjustment device.

Abstract: A bearing mechanism for a pedal for bicycles and the like includes a pedal pin having a threaded end for the assembly in cantilever fashion of the pin on the end of the respective pedal-crank, a beaker-shaped pedal body rotatably mounted on the pedal pin by a roller-bearing placed near the outer extremity of the pedal pin, a pair of ball-bearings and a threaded ring-nut screwed into a threaded portion of the wide mouth of the beaker-shaped body for the axial locking of the various components of the device. Both of the ball-bearings are placed near the wide mouth of the beaker-shaped body.

Abstract: In a rear derailer for bicycle gears, of the type including a support member intended to be fixed to the bicycle frame and a chain transmission member connected to the support member and movable relative thereto, the transmission member is mounted for rectilinear sliding on a guide pin carried by the support member.

Abstract: A fast opening arrangement for shoes of bicycle brakes--of the type wherein control is obtained, by cable, through a control lever pivotally mounted on a body fixed to the bicycle handle bar--comprises a cylinder inserted across the control lever and axially moving through the same between two positions, which alternatively rest with their lateral surface against one or the other of the two sidewalls of the body on which said lever is pivotally mounted. These walls project to different extents and are cam profiled. In one of the two positions, the brake shoes are close to but spaced from the tire for normal braking; but in the other position, the shoes are spaced far enough apart to permit the wheel to be removed from between them.

Abstract: A rear derailleur for bicycle gears comprises an upper body which can be fixed to the bicycle frame and a lower body carrying chain transmission member and being movable relative to the upper body to bring the chain into selective engagement with a series of sprockets carried by the hub of the rear wheel of the bicycle. The lower body is connected by an articulated parallelogram joint to an intermediate connecting element which is in turn mounted for sliding on guide member carried by the upper body. Connecting rods are provided for univocally correlating the movements of the intermediate element relative to the upper body with the movements of the lower body relative to the intermediate element. In this way, the resulting movement of the lower body relative to the upper body has both a component along the axis of the hub of the rear wheel of the bicycle, and a component radial to that axis.

Abstract: A device allowing bicycle pedals to take up a steady position when they are not engaged by the cyclist's shoe comprises a knurled ring, formed on the pedal spindle, and a lever pivotally mounted on a pin parallel to the pedal spindle and positioned under the pedal body. The lever has a corresponding knurl at one end for engaging with the knurled ring under the action of a spring means, when the cyclist's shoe is not engaged with the pedal. The knurl is disengaged once the shoe engages the pedal.

Abstract: A toe clip for bicycle pedals, comprising a plate of flexible material adapted to be fixed to one side of a bicycle pedal body and extending forward and then being bent rearward to enclose the toe of a shoe. A strap is surrounded by an eyelet secured to the rearwardly bent portion of the plate. The eyelet is in the form of a loop having two free superposed ends, and a lever presses together the two ends of the eyelet with the end of rearwardly extending portion between them thereby to permit selective positioning and locking of the flexible plate and the eyelet in any of a plurality of selected adjusted positions relative to each other. The end of the eyelet and the rearwardly extending end of the flexible plate have mating projections and recesses disposed in a series extending in the direction of adjustment of the flexible plate and eyelet relative to each other, thereby to predetermine the positions of adjustment.

Abstract: In a line control unit for teleprinters, a pair of isolating circuits are disposed between the line transistors and the generating circuit, so that there is no electrical connection between the line and the signal generator circuit. The generating circuit is coupled to each isolating circuit by a delay circuit which delays only the edges of the corresponding switching signal at which the corresponding transistor turns from the blocked to the conductive state, whereby the conduction of each transistor is delayed while the other transistor recovers to its blocked state.