Patent GB-341502-A (GB)
IPC: A43D75/00
Filed: 1929-10-22
Abstract: 341,502. Boot-making machines. UNITED SHOE MACHINERY CORPORATION, 205, Lincoln Street, Boston, U.S.A.-(Assignees of Jorgensen, B.; Beverly, Massachusetts, U.S.A.). Oct. 22, 1929, No. 32011. Convention date, Oct. 23, 1928. [Class 17 (i).] Lasting and pulling over.- Relates to lasting machines which include upper pulling means, means for wiping the upper into lasted position about the toe of the shoe and devices for driving a plurality of groups of fastenings to fasten the upper in lasted position and consists in the provision of means for adjusting the foremost side fastening means bodily rectilinearly lengthwise of the shoe relatively to the other side fastening means, and automatic controlling means adjustable at the will of the operator to cause the machine to stop at a predetermined point in the machine's cycle or to omit such stop. As applied to a machine of the general construction described in Specification 920/15, [Class 17 (i), Boots and shoes, Apparatus for making &c.], but provided with wipers 14 of the kind described in Specification 126,136, [Class 17 (i), Boots and shoes, Apparatus for making &c.], the four side tackers 36, 38, 40, 42, Figs. 1 to 3, on each side of the toe are so mounted that the foremost two on each side can be adjusted relatively to the other two. The tacker 36 is fast on the usual laterally swinging side arm 34, which carries parallel rods 44, 46, on which the other three tackers are pivoted and guided, respectively. Adjacent pairs cf tackers are spaced by collars 62, 66 on these rods and the two pairs urged apart by springs 68, 70, an adjustable clamp 72 engaging the rods to determine the position of the foremost pair of tackers. The side tackers 18 of the group of three tackers at the toe are adjustable laterally of the central tacker 16 by screws 20 and longitudinally of the shoe by screws 30 engaging a crossbar 28 secured to the central tacker, springs 22 urging the tackers rearwardly. The side arms carry clamps 98 permitted to slide laterally of the shoe and tip heightwise under spring control in known manner. Preferably, the machine is caused to stop at the end of the overwiping movement of the wipers 14. The cam shaft, Figs. 5, 6, carries a cam having three protruberances 120, 122, 124, with intervening depressions, co-operating with a roll 126 moving with a spring-pressed slide 128 provided with a lug 132 co-operating with an abutment 134 slidable laterally on a brake shoe 112 normally maintained out of action by a spring 116 encircling a control rod 114 connected to the clutch. At the beginning of the machine's cycle the projection 120 is in engagement with the roll 126, and the lug 132 is engaging the abutment 134, maintaining the brake on and the clutch out of engagement. On depression of the usual starting treadle a member 140 moves the abutment 134 from under the lug 132 and allows the spring 116 to release the brake and engage the clutch. The depression 142 in the cam then allows rise of the roll 126 and return of the abutment 134 beneath the lug 132 so that the next hump 122 stops the machine. Normally the machine would again stop when the hump 124 reached the roll 126, but if it is, desired to cut out this stop a roll 154 on an eccentric stud is raised by turning the stud with a screwdriver so that a plate 146 secured to the cam does not allow the roll 126 to rise to allow return of the abutment 134.