Ladder positioning and holding structure

In combination, a ladder having side rails and spaced apart ladder rungs extending between the ladder rails, said ladder including a front, back, an upper end, a lower portion and sides, and structure for positioning and holding the ladder on a peaked roof comprising a wood two-by-four beam clamping member including opposite edges and sides positioned on the front of the ladder adjacent the upper end thereof with one side of the two-by-four beam in surface to surface engagement with the upper edge of the ladder rails, said clamping member having a lower beveled edge extending toward the bottom of the associated ladder whereby when it is desired to remove the ladder from a peaked roof the associated ladder may be turned over with its front in contact with the roof and the clamping member may be cammed along the beveled surface over the roof peak, roller means positioned on the clamping member for facilitating moving of the associated ladder from a peaked roof, a wood two-by-six beam holding member including opposite edges and sides having one edge positioned in surface to surface engagement with the bottom edge of the rails of the ladder in alignment with the clamping member, roller means secured to the opposite edge of the holding member adjacent each side rail of the ladder and outwardly of the side rails in a plane parallel to the plane of the ladder, said roller means being positioned centrally of the sides of the holding member and having a diameter at least equal to the width of the holding member between the sides thereof in the longitudinal direction of extent of the associated ladder, swivel means for mounting the roller means on the opposite edge of the holding member, notches in the opposite edge of the holding member adjacent each side rail of the ladder and inwardly of the side rails in a plane parallel to the plane of the ladder, and clamping means for securing the holding member with the rollers attached thereto and the clamping member together on the front and back of the ladder respectively with the ladder clamped therebetween, comprising bolts extending through the clamping member adjacent to but on the inside of the ladder rails and at the lower side of a ladder rung adjacent the top of the ladder and through the holding member between the edges thereof and nuts secured in the recesses in the holding member to the bolts.