An automatic cloth feeder comprising: a feeding conveyor configured to carry a cloth in a carrying direction to a deposition section and to crumple the cloth from the right and left sides; guide members (23, 24) provided in tapered shapes and arranged on right and left sides of the feeding conveyor and forming crumpling paths (25, 26) on the right and left sides of the feeding conveyor so as to allow right and left portions of the cloth drooping from a central portion to the right and left sides to enter and to be gathered and crumpled; a pair of sensors (27, 28) arranged on the left and right side of the feeding conveyor at leading ends of the crumpling paths (25, 26) and being configured to detect the arrival of right and left trailing end portions (Wr, Wl) of the cloth carried by the feeding conveyor; the depositions section comprising a pair of catch means located farther ahead on the right and left sides and being configured to catch and hold the right and left trailing end portions (Wr, Wl) of the cloth detected by the sensors (27, 28) and to feed the cloth with the right and left trailing end portions (Wr, Wl) as leading end portions into a process; and a buffering device comprising cloth supply section provided at a preceding stage of the feeding conveyor and configured to move upward toward the feeding conveyor to introduce the cloth from below to the feeding conveyor at a substantially central portion of the cloth in the carrying direction, wherein the cloth supply section is arranged at a position corresponding to a front portion of the feeding conveyor, and equipped with a clamp being configured to hold the cloth at a substantially central portion between the right and left sides of the cloth, such that the cloth supply section is configured to provide a cloth standby section in which the carried cloth stands by temporarily, so as to accumulate and supply a quantity of cloths exceeding a processing quantity of feeding and to proceed with feeding in the feeding conveyor without congestion in the automatic cloth feeder. a feeding conveyor configured to carry a cloth in a carrying direction to a deposition section and to crumple the cloth from the right and left sides; guide members (23, 24) provided in tapered shapes and arranged on right and left sides of the feeding conveyor and forming crumpling paths (25, 26) on the right and left sides of the feeding conveyor so as to allow right and left portions of the cloth drooping from a central portion to the right and left sides to enter and to be gathered and crumpled; a pair of sensors (27, 28) arranged on the left and right side of the feeding conveyor at leading ends of the crumpling paths (25, 26) and being configured to detect the arrival of right and left trailing end portions (Wr, Wl) of the cloth carried by the feeding conveyor; the depositions section comprising a pair of catch means located farther ahead on the right and left sides and being configured to catch and hold the right and left trailing end portions (Wr, Wl) of the cloth detected by the sensors (27, 28) and to feed the cloth with the right and left trailing end portions (Wr, Wl) as leading end portions into a process; and a buffering device comprising cloth supply section provided at a preceding stage of the feeding conveyor and configured to move upward toward the feeding conveyor to introduce the cloth from below to the feeding conveyor at a substantially central portion of the cloth in the carrying direction, wherein the cloth supply section is arranged at a position corresponding to a front portion of the feeding conveyor, and equipped with a clamp being configured to hold the cloth at a substantially central portion between the right and left sides of the cloth, such that the cloth supply section is configured to provide a cloth standby section in which the carried cloth stands by temporarily, so as to accumulate and supply a quantity of cloths exceeding a processing quantity of feeding and to proceed with feeding in the feeding conveyor without congestion in the automatic cloth feeder.