IMPROVEMENTS IN HOISTS

PERFECTIONNEMENTS DANS LES ASCENSEURS

Claims

Claim lst. The trap doors provided with disconnected portions of the track or guide upon which the platform or oar travels, said disconnected portions having their lower ends prolonged beyond the edge of the doors, in combination with the upright beams or frames, provided with the main portions of the tracks or guides and having recesses or cavities therein for the reception of the said prolonged ends, substantially in the manner and for the purposes described. 2nd. The trap doors provided with disconnected portions of the tracks or guides upon which the platform or car travels, said disconnected portions having their lower ends bevelled and prolonged beyond the edge of the door and having both edges thereof recessed, in combination with the upright beams or frames provided with the main portions of the tracks or guides, the lower portions thereof being bevelled and tongued, and the upper portion tongued to fit the bevelled and recessed edges of the disconnected parts, and said beams having cavities or recesses for the reception of the said prolonged portions of the disconnected parts, substantially as described. 3rd. The combination, with the beams A A tracks or guides Al A, and floor or cross beam B, of the doors B1 BI, disconnected parts B2 B2 having prolonged ends a a, arranged, constructed and operating substantially as and for the purposes described.