Patent GB-190422414-A (GB)
Title: Improvements in Rotary Pneumatic Machines for Turning Bags and the like Inside Out.
Inventor: LESTER WILLIAM HENRY
Filed: 1904-10-18
Granted: 1904-12-15
Abstract: 22,414. Lester, W. H. Oct. 18. Turning sewn articles inside out.-Relates to a rotary pneumatic machine for turning bags and the like inside out, of the kind described in Specification No. 22,413, A.D. 1904. The mouth of the bag to be turned is held, by the operator, in front of the diamond-shaped opening 102 in the casing 92, Figs. 3 and 4. The bag is pressed against the support 123, 124, Fig. 8, the hands lying in recesses 125, 126 in the front plate 100. The mouth of the bag is opened by the fingers 103, 104, secured to the rods 105, 106, which are geared together by the wheels 109, 110 and are rotated in opposite directions, against the action of the spring 114, by the lever 121 operated by the adjustable cam 117 secured to the rotating drum 36. Air, drawn by an air pump through the passage 41 in the drum 36 and thence through the pipe 47, sucks the bag inwards from the opening 102, thus turning it inside out. The port 40, which is smaller than the port 39, is made long and narrow so that the air passage 41 is quickly opened and closed to the exhaust. When the bag is completely turned, its closed end projects slightly within the passage 41. The end of the bag is thus caught by the piece 34, as it rotates with the drum 36 in the direction of the arrow 42, and is pressed by it against the rotating drum 61 which, like the drum 36, is driven from the shaft 89 and forms an airtight joint with the casing 92. The air passage 63 then comes opposite the port 66 in the suction pipe 65 and the bag, which is released by the operator at this point, is drawn against the grating 64 and is thus caused to adhere to the drum 61. The bag then passes between the drums 36, 61. The drum 61 is mounted on arms 78, pivoted at 74 and pressed upwards against the stops 80 by springs 79, so that the drums 36, 61 may move slightly apart. When the bag reaches the lower side of the drum 61, the suction port 66 is closed and the bag drops on to the receiver 128, this operation being facilitated by the stripper 129 and guide-plate 130. If the bag is released by the operator too soon, it is drawn into the passage 41, where it is stopped by the grating 37. The bag then remains in the passage 41 until it falls into the space 150. Fig. 12 shows the arrangement of suction pipes which is preferably adopted. The pipe 47 is rigidly fixed to the pipe 49 leading to the fan. The pipe 65 is pivotally mounted in the elbow-piece 68 fixed to the sleeve 69 which forms a telescopic joint with the pipe 70. To adjust the machine for turning longer and broader bags, the front section 93 of the casing 92 is replaced by a longer one having a larger opening 102 ; also, the position of the suction port 66 with respect to the air passage 63 is adjusted by turning the pipe 65 by means of the arm 86 secured by the bolt 88. The longitudinal position of the fingers 103, 104 on the rods 105, 106 is also adjusted. Instead of having a suction fan connected to the pipe 49, a current of air may be forced into the end 93 of the casing 92. Both drums 36, 61 may be yieldingly mounted so that they can recede from each other.