Patent ID: 6015028
Filing Date: 2000-01-18
Classification: E04G

Abstract:
A pump jack hoisting apparatus for use in connection with low-rise and residential constructions and buildings including a safety railing for protecting workers from accidental falling, comprising:a) a pair of laterally spaced pump jack poles each including a brace adjacent one end thereof for securing to a building or construction;b) a pair of pump jacks each operably associated with the respective jack pole of said pair of jack poles;c) each of said pump jacks including inner and outer support extensions;d) inner and outer walking platforms spanning between said pair of pump jacks and supported on respective inner and outer support extensions thereof;e) said inner and outer platforms extending in a generally common plane;f) a pair of generally L-shaped support frames each removably secured to said outer support extension of said respective pair of pump jacks;g) each of said pair of a generally L-shaped support frames including a vertically extending arm and a horizontally extending brace;h) each said horizontally extending brace including an upwardly extending mounting projection member engaging the outer support extension of said respective pump jack means for locking each of said pair of generally L-shaped support frames to respective outer support extensions, said means for locking comprising lock pins releasably locking the projection members to respective outer support extensions, and a catch member on each vertically extending arm engaging a flange on respective outer support extensions;i) first, second and third vertically equidistantly spaced rail brackets mounted on each of said arms;j) each of said rail brackets being generally L-shaped and including a top-open recess;k) said rail brackets being vertically spaced on each of said respective vertically extending arms;l) a rail removably positioned in said recess and extending between said pair of a generally L-shaped support frames;m) each of said vertically extending arms including a first side facing said brace and a second side facing away therefrom; andn) said rail brackets being mounted on said second side of said arms vertically extending.