Wall raising apparatus

Apparatus for pivot-lifting a wall-frame from a horizontal to a vertical position relative to a floor, wherein:

• the apparatus includes a cable, and includes a hook means for attaching the cable to a top rail of the wall-frame;
• the apparatus includes upper and lower elongate mast-members;
• the apparatus includes a mast-set of elements;
• the mast-set of elements comprises a top element, a winch element, and a base element;
• the top-element of the mast-set includes a cable guide means which is so structured as to be effective, when the elements are assembled into a mast, to guide the cable over the top of the mast;
• the winch-element of the mast-set includes an operable winch, which is so structured as to be suitable, when the elements are assembled into a mast, for being operated to apply force to the cable;
• the base-element of the mast-set includes a base plate, which is suitable for resting on the floor, and includes a pivoting member, which is mounted on a pivot in the base plate;
• the upper mast-member comprises a length of rectangular, uniform-cross-section, lumber;
• the top-element is formed with a respective upper-member-socket, which has a cross-section that is complementary to the cross-section of the upper-mast-member, and which is so structured, in relation to the upper mast-member, that the upper mast-member can be readily engaged and assembled thereto for use of the apparatus, and can be readily disengaged and dismantled therefrom after use;
• the winch-element is formed with a respective upper-member-socket, which has a cross-section that is complementary to the cross-section of the upper mast-member, and which is so structured, in relation to the upper mast-member, that the upper mast-member can be readily engaged and assembled thereto for use of the apparatus, and can be readily disengaged and dismantled therefrom after use.