Apparatus for making up fabric pieces of a predetermined length generally on sewing machines

Claim 1

In an apparatus for producing fabric pieces of predetermined lengths in which the fabric is joined together at a first work station and cut into selected lengths at a second work station the combination comprising a. fault detector means mounted on said apparatus for vertical movement in response to variations in the thicknesS of the fabric, said means being located between the first and second work stations, b. pulse emitting means operatively associated with the fabric joining means to emit a pulse for every working cycle of the fabric joining means, c. pulse counting means connected to said pulse emitting means, d. first, second and third comparator means connected to said pulse emitting means and to said pulse counting means to receive pulses therefrom, said pulse comparator means being pre-programmable to require the combined pulses received from said pulse emitting means and from said pulse counting means to reach a predetermined power level before being activated, e. memory storage means connected to receive input pulses from said fault detector means (a) and from said third comparator means (d) and connected to deliver an output pulse to said pulse emitting means (b), f. analyzer means connected to receive output pulses from said first and second comparator means (d) and from said memory storage means (e), g. means connected to said analyzer, means (f) to reset said pulse counting means (c), and h. cutting means connected to said anayzer means (f) to effect cutting of the fabric upon receiving the appropriate signal.