Scaffolding

Abstract

A weld-free scaffold for suspending from the top of a wall includes inverted L-shaped hangers with hooks on horizontal top arms thereof for engaging the top of the wall, feet on the bottom ends of the vertical arms of the hangers for extending between studs for stabilizing the scaffold, horizontal support bars extending outwardly from the hangers for supporting platform planks, adjustable stops on the bars for locking planks in position, and a railing defined by posts mounted in the outer ends of the bars and rails detachably securable to said posts.

1 . A weld-free scaffold for suspending from the top of a wall comprising:
 (a) a plurality of hangers, each including
 (i) a vertical arm for resting against the wall 
 (ii) a horizontal top arm slidable in and extending outwardly from an upper end of the vertical arm for resting on the top of the wall 
 (iii) a hook on an outer free end of the horizontal arm for engaging an edge of the top of the wall for retaining the hanger on the wall, and 
 (iv) a foot perpendicular to a bottom end of the vertical arm for resting against the wall 
   (b) a horizontal support bar extending outwardly from said vertical arm for supporting planks defining a platform for a worker;   (c) a stop slidable on said support bar for locking said planks in position on said support arm; and   (d) a railing for mounting on an outer end of said support arm including
 (i) a railing post mounted in aligned openings in an outer end of said support arm; and 
 (ii) a plurality of rails for mounting on said railing post, each rail being slidable relative to said post; and 
 (iii) a latch for locking each said rail in a fixed position on the railing post. 
   
     
     
         2 . The scaffold of  claim 1 , wherein said foot is rotatable relative to said vertical arm for rotation between a vertical storage position and a horizontal use position. 
     
     
         3 . The scaffold of  claim 1 , wherein said stop includes a bracket slidable on said support bar; a bolt in said bracket for securing said bracket in a fixed position on said support bar; and a stop post pivotally connected to said bracket for rotation between a vertical non-use position and a horizontal use position. 
     
     
         4 . The scaffold of  claim 1 , wherein said foot is T-shaped, including a stem for removable mounting in a bottom end of said vertical arm and a top for extending between studs when the foot is mounted in the vertical hanger arm. 
     
     
         5 . The scaffold of any one of  claims 1 , wherein each rail includes a longitudinally extending C-shaped slot for receiving heads of bolts extending through railing posts. 
     
     
         6 . The scaffold of  claim 5 , wherein said bolt heads are conical for reducing sliding friction between the rail and the posts. 
     
     
         7 . A weld-free corner support assembly for use in a scaffold system comprising:
 (a) a hanger for suspending the corner support on a corner defined by a pair of walls perpendicular to each other, the hanger including a vertical arm for resting against the wall corner, a pair of feet at 90° to each other proximate a lower end of the vertical arm for extending along the walls to stabilize the hanger, a pair of first horizontal arms at 90° to each other proximate the upper end of the vertical arm said first horizontal arms extending parallel to the top ends of the walls when the hanger is in a use position; and second horizontal arms connected to said first horizontal arms for extending over top ends of the walls, and hooks on outer free ends of said second horizontal arms for engaging inner sides of the top ends of the walls to retain the hanger on the corner;   (b) a horizontal support bar extending outwardly from said vertical arm between the ends thereof for supporting planks of a platform; and   (c) a railing post for mounting in an outer end of said support bar for supporting rails to define a railing.   
     
     
         8 . The corner support assembly of  claim 7 , including hanger posts carrying said second horizontal arms slidable on said first horizontal arms. 
     
     
         9 . The corner support assembly of  claim 8 , wherein said second horizontal arms are slidable in said hanger posts. 
     
     
         10 . The corner support assembly of  claim 7 , wherein said support bar is hollow and includes notches for mating with outside corners of said vertical arm and a railing post; pins extending transversely through said support bar proximate the ends thereof; and threaded holes in pins for receiving bolts extending through said vertical arm and said railing post.