Patent GB-267976-A (GB)
Title: Improvements in or relating to machines for operating upon insoles for boots or shoes
IPC: A43D43/06
Filed: 1927-03-21
Abstract: 267,976. United Shoe Machinery Corporation, (Assignees of Bertrand, F. E.). March 22, 1926, [Convention date]. Channel - opening; sewing rib, forming.- Relates to machines for operating on lipped insoles, of the kind having a pair of work feeding rolls engaging the inside and outside, respectively, of the lip, and a presser member engaging the unlipped surface opposite the part engaged by the feeding rolls, and consists in improved details of construction. The lip-engaging rolls are mounted on axes maintained parallel during separation of the rolls. The presser roll is driven, and is adjustable along the line of feed. One of the lip-engaging rolls co-operates with h a rotary trimmer driven at a uniform speed and provided with a grinding device. The rolls are detachable, and can be changed for others, so that the machine can be used to apply reinforcing fabric to one face of the insole and against the lip, or to press together lip flaps to form a sewing rib. As arranged for applying reinforcing fabric to the lip, the machine comprises a roll 20, Fig. 6, engaging the inside of the lip, a roll 22, engaging the outside of the lip and the feather F, and a roll 24 engaging the surface of the insole S opposite the lip. All these rolls are driven. The roll 20 is adjustable longitudinally, and is held in adjusted position by a screw 34, Fig. 5, passing through a slot in its shaft and having screw-threaded engagement with a split sleeve 35. The shaft rotates in bearings in a carrier 28 piloted on a shaft 30, the carrier being normally held depressed by a spring 40, Fig. 3, an arm 37 on the carrier abutting against an adjustable stop. The feed roll 24 is clamped to its shaft by a screw 78, Fig. 6, with a conical head which expands the slit end of the shaft. The bearing of the shaft is mounted in a carrier 80 formed with a sleeve 92, Fig. 1, which acts as a bearing for a shaft driving the roll. The sleeve is adjustable longitudinally and angularly, and is held in adjusted position by a screw 93 which clamps a split collar to the sleeve, the collar having a lateral pin 94 engaging a socket in the frame. This collar is slotted to engage a pin on a lever 108 pivoted at 44 and urged righthandedly by a spring 110 against an adjustable stop 116. The lever is connected by links and a lever 124 to a treadle, which is depressed to separate the rolls for the changing of the workpiece. A depending arm of the lever carries an adjustable screw 128 engaging a push rod 130 for lifting the carriage 28, and therefore the roll 20. A trimming knife 174, Fig. 5, is pressed outwardly by a spring plunger, its edge engaging the rear of the roll 22. This knife is driven at a high uniform speed and is provided with a grinding wheel 208, Fig. 3, which is movable to and from operative position. The bearing 212, carrying the grinding wheel is adjustable outwardly from a bracket 214, which can be swung about a pivot 218 by a handle 216, a spring 220 normally retaining the grinding wheel in inoperative position. When in contact, the tangents to the grinder and knife meet at an acute angle, so that the grinder is slowly rotated by the rapidly rotated knife. The knife shaft is mounted in a member 180 pivoted at 181, is adjusted about the pivot, by a screw 183 and is clamped in adjusted position by a screw 185 engaging a slide formed with a curved portion engaging the pivot. Behind the roll 22 is a canvas clearing wheel 68, Fig. 6, with peripheral teeth, and a scraper 264. Work guides comprise a guide 138, Fig. 4, in advance of the lower feed roll, to engage the outside angle of the lip, a guide 148, for the rear surface of the work, and a guide 160, Fig. 5, bearing on the unlipped surface just in advance of the presser roll. The latter guide has a stem longitudinally adjustable in a block 162, this block having a stem adjustable longitudinally and angularly and clamped by a screw 168. The other two guides are similarly adjustable. The disc knife has a guard 179, Fig. 4, mounted on a stem 172 adjustable by a clamping screw 173. To prevent adhesive sticking to the roll 20 and wheel 68, oil is supplied from a cup 198. Fig. 1, to a felt pad 200, Fig. 4, in contact with the wheel. The machine is driven by an electric motor driving a bevel wheel 232, Fig. 1, geared direct to the disc knife but loose on the main shaft 60. This shaft is keyed to a clutch member 230 which rotates with the bevel wheel 232 when a treadle connected to a rod 250 is fully depressed. The clutch may be slipped when it is desired to drive the feed rolls at a low speed. Side shafts carrying gear wheels gearing with wheels on the ma,in shaft, for driving the various parallel shafts, are carried on removable housings 32, 193', Fig. 9, bored at their lower ends to engage studs 44, 194 to which the housings are clamped by screws 46. The housings also have sleeves to engage screws 265 which clamp the housings to a fixed central portion of the machine. A link 267, pivoted to one housing, is clamped to the other by a screw 269. When the machine is to be used for forming the sewing rib by pressing the adhesive covered lips L together, other housings may be substituted, in which the knife and grinder are not present. For this purpose rolls 20<1>, 22<1>, 24<1>, Fig. 10, and ploughs 148<1>, 138<1> are fitted, in part by changing housings, and in part by changing tools. The roll 20 may have its end shaped as a square with rounded corners. Specifications 25730/06, 25731/06, and 10299/13 are referred to.