GB580777A - Improvements in or relating to machines for ornamenting shoes or parts thereof - Google Patents

Abstract

580,777. Ornamenting - machines for shoes. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). July 11, 1944, No. 13208. Addition to 539,896. [Class 17 (i)] A stitch indenting machine comprising a work support and an indenting wheel which is reciprocated in a rectilinear path at an acute angle to the path of movement of the work, as described in the parent Specification, so that it imparts a rapid succession of blows to the work and assists in feeding it, is provided with a wheel carrier which is held towards the work magnetically, and toggle-actuated mechanism, which is unconnected with the wheel carrier, for imparting reciprocatory movements to the latter. The work support is of such weight and is so spring-controlled that it does not yield to the reciprocatory thrust of the wheel but can adjust itself to variations in the thickness of the work. As shown, the wheel 10 is carried rotatably on a pivoted arm 20 which is supported, with the wheel in work-engaging position, by a magnetic stop 28, Fig. 4, carried on a bracket 34 so as to be adjustable heightwise of the work. The upper surface of the arm has a cupped boss 56 engaged loosely by a plunger 46, Fig. 2, the upper end of which is pivoted to the lower of a pair of toggle levers 68, 72 adapted to be actuated by a rod 76 and eccentric 78. The work support 12, Fig. 1, is rotatably mounted on ball bearings in a support 100 adjustable, both angularly and heightwise of the work and carried by a heavy member 126 which is slidably'supported by a spring 132 on a treadle rod 130. The arrangement is such that the wheel is held constantly in contact with the work by the combined effects of the magnet 28, the weight of the arm 20, and a pressure spring 38 engaging the latter, and does not rise in company with the plunger 46. The inertia of the work support prevents lowering of the work under the impulses imparted to it by the wheel, but does not prevent a slow adjustment of its height to compensate for. variations in the thickness of different parts of the work. The work support is rotated by gearing (not shown) driven by a telescopic universally-jointed shaft 176 from skew gears 170 and a main shaft 156 which also drives the eccentric 78 through a belt 88. An adjustable hinged shield 188 is provided for the roll 10 and its associated electric heater 182.