|
Sometimes found carrying a label stating: Craftsman fabricado pars a Sear, Roebuck SA, the Sanches Blanes version of the South Bend 9-inch was made in Brazil by "Industria de Maquinas Ferramentas. Ribeiraopires SP Industria Brasileira". The lathe was made in the usual South Bend configurations of A, B and C models with, respectively, a screwcutting gearbox and power cross feed; changewheels and power cross feed and changewheels and hand-powered cross feed. While early examples may have faithfully followed the original South Bend design, later models of the 117 mm (4.6") centre height by 600 mm (23.6") between-centres lathe had major modifications: the 3-step headstock pulley appears to have been made exclusively as a V-belt type and the backgear assembly used expensive helical gears - quieter and smoother running than the original type (and able to absorb greater loads) with taper roller bearings used to help cope with the additional end thrust that this type of installation usually generates. With a 50 Hz motor spindle speeds were: 75, 115, 190, 395, 620 and 990 rpm and with a 60 Hz unit: 90, 140, 230, 480, 750 and 1200 rpm. To help the operator (and never found on any South Bend example), micrometer dials were fitted to the tailstock spindle and the carriage handwheel (though unlike the Boxford copy and other clones, Sanches Blanes appear not to have taken the opportunity of enlarging the dials on the cross and top slide screws, these remaining at inadequate small diameter as used on South Bend lathes from the 1930s). One major alteration concerns the apron on late-model machines, this appearing to have been considerably beefed-up with the possibility that the power-feed mechanism was also altered. As standard the lathe was very well equipped and delivered to the first owner with 3 and 4-jaw chucks, face and catch plates, fixed and travelling steadies, 4-way toolpost, thread-dial indicator, carriage stop, No. 2 and No. 3 Morse-taper centres the necessary spanners and a 0.5 hp 1750 rpm motor and reversing switch. As the Sanches Blanes underwent a series of small improvements, it shows that sales must have been good enough to encourage a programme of development. If you have a Sanches Blanes machine tool of any type the writer would be pleased to hear from you..
|
|