Abstract: A process is disclosed whereby each of a plurality of stations, transmitting messages segmented into multiple sequential packets, is able to access a transmission channel of a local communications network. A residual packet number is associated with each message representing the number of packets remaining in the message after the instant packet has been transmitted. The number of packet collisions on the transmission channel is reduced by employing a resolution phase, which may be divided into several time intervals. Stations transmit messages with certain residual packet numbers during predetermined time intervals of the resolution phase. A station transmits its next packet after the end of the ongoing transmission if its residual packet number is smaller than the residual packet number of the ongoing message transmission.

Abstract: A hair clipper comprised of a stationary blade and a movable clipper blade each provided with teeth cooperating with each other upon the reciprocating swinging movement of the clipper blade to and from the stationary blade to produce hair cut is further provided with an adjusting strip displaceable along the teeth of the stationary blade in the direction of elongation of those teeth so as to adjust the depth of the tooth gaps in the stationary blade.

Abstract: A dry shaver has a shearing foil clamped to a holder detachably mounted on a shaver housing over a cutter. The holder is arranged to enable the shearing foil to be moved between an operating position wherein the shearing foil is wrapped around the cutter in a wrap angle exceeding 180.degree. and a second position wherein the wrap angle is less than 180.degree. to facilitate removal of the holder and shearing foil from the shaver housing.