Hold away ladder attachments

Claim 1

AN ATTACHMENT FOR A LADDER HAVING SIDE RAILS AND RUNGS; SAID ATTACHMENT COMPRISING A TOP PLATE, A BOTTOM PLATE, AN ABUTMENT SPACER BLOCK INTERPOSED BETWEEN SAID PLATES AND SECURED THERETO TO HOLD SAID PLATES IN ASSEMBLED PARALLEL RELATION, A REARWARD EXTENSION FORMED INTEGRAL WITH SAID TOP PLATE INTERMEDIATE THE ENDS THEREOF AND OF A LENGTH SUCH AS TO FIT BETWEEN SAID LADDER SIDE RAILS, THE REAR SIDE OF SAID BLOCK AND SAID BOTTOM PLATE LYING IN THE SAME VERTICAL PLANE AND SUBSTANTIALLY IN ALIGNMENT WITH THE REAR SIDE OF SAID TOP PLATE, SAID SPACER BLOCK BEING SUBSTANTIALLY OF THE SAME LENGTH AS SAID TOP PLATE EXTENSION, A PAIR OF FORWARDLY EXTENDING ARMS POSITIONED BETWEEN SAID TOP AND BOTTOM PLATES, EACH DISPOSED WITH ITS REAR END ADJACENT AN END OF SAID SPACER BLOCK, PIVOT MEANS LOCATED AT THE REAR ENDS OF SAID ARMS FOR SWINGABLY CONNECTING THE SAME TO SAID TOP AND BOTTOM PLATES, COOPERATING MEANS ON SAID TOP PLATE AND ARMS FOR LOCKING THE LATTER IN SELECTED ANGULAR RELATION WITH RESPECT TO EACH OTHER, SAID EXTENSION BEING ADAPATED TO SEAT ON A LADDER RUNG, A CLAMP PLATE SUPPORTED BY FASTENER DEVICES ON THE REAR SIDE OF SAID TOP AND BOTTOM PLATES ARRANGED TO STRADDLE SAID LADDER RUNG TO CLAMP THE ATTACHMENT TO SAID LADDER SIDE RAILS, SAID ARMS IN THEIR ADJUSTED ANGULAR RELATION DIVERGING FORWARDLY BEYOND SAID LADDER WITH THEIR FORWARD ENDS ENGAGEABLE WITH A SUPPORTING SURFACE.