Abstract: When a residual amount R of a roving required to make a bobbin full at a desired stopping position A of the bobbin rail which moves upwardly is smaller than the amount (4.times.L) corresponding to remaining four layers of the roving for a normal winding process, a desired amount Q is calculated as the residual amount R divided by 4. The switching of the roving during the downward movement of the bobbin rail is done when the amount of the roving from the top end of the bobbin rail is equal to the desired spinning amount Q. This operation is repeated until a full bobbin amount is detected by an encoder, and the flyer frame is stopped.

Abstract: To secure the end of the roving (5) to packages (9) before their doffing from a roving frame, it is proposed to initially raise the package support carriage (2) into a position such that the lower end (4a) of the tubes (4) is at the level of the compressor (16) of the flyers (6), then rotate the packages (9) and flyers (6) through a few revolutions in order to wind and secure the roving (5) onto the lower end portion (4a) of the tubes (4), after which the carriage (2) is lowered to break the roving (5) in the section between the lower end (4a) of the tubes (4) and the flyers (6). Preferably, before lowering the packages (9), a reserve of roving (5) is created by slowly rotating the flyers (6) and packages (9) through a few revolutions, to simultaneously twist the roving (5) and strengthen it.

Abstract: A roving frame apparatus and method for winding roving upon bobbins (A) and doffing full packages directly upon a conveyor (F) wherein a spindle rail (C) is moved laterally beneath an overhead conveyor removing full packages therefrom and supplying empty bobbins thereto.

Abstract: An improved ring spinning machine for making a filled bobbin of yarn, thread or the like comprises at least one ring rail which moves up and down near a plurality of spindles driven by a ring rail drive. A control for the ring rail drive in case of an unforeseen machine stoppage, is arrayed so as to cause the ring rail drive, when it would otherwise drive the ring rail in the upward direction on restart because the ring rail was moving up at the time of shut-off, to reverse so that the ring rail moves downward no later than the time of restart of the spindles, so that the ring rail moves downward after the unforeseen machine stoppage at the beginning of restart thus providing for a safer, more reliable spinning operation.

Abstract: An apparatus for locating a servicing device which travels along a parent textile machine, such as a spinning frame, having a plurality of stations and stops at any designated station of the parent machine to there perform a servicing operation, such as yarn piecing or cleaning by use of fluid, such as compressed air or vacuum, supplied from a fluid source provided separately from the servicing device. The apparatus comprises, on each station of the parent machine, a stationary connector communicating with the fluid source and a locating guide member having a locating guide groove therein, and, on the servicing device, an air cylinder, a locating rod actuated by the cylinder toward and away from the locating guide member and engageable with the guide groove and a communicating member movable together with the locating rod and engageable with the stationary connector.

Abstract: A method and apparatus for changing bobbins in a flyer spinning frame which includes a bobbin rail for supporting bobbins adjacent the flyers movable both vertically and tiltably, the bobbin rail being moved sequentially from an upper bobbin winding position, a lower horizontal position, a forwardly tipped position, then upwardly in the tilted position into a comfortable bobbin doffing position, downwardly into the lower position, back into a horizontal position while in the lower position then finally upwardly into the upper bobbin winding position.