Portable Scaffolds (Patent No: 469446)

Inventor: Bjarnason, Chris

Location: Busby

Comments: N/A

Description:
CLAIMS

Having regard to the foregoing disclosure, the patent of which this specification forms part confers, subject to the conditions prescribed in The Patent Act, 1935, the exclusive right, privilege and liberty of making, constructing, using and vending to others to be used, the invention as defined in claims submitted by the patentee as follows:

In a portable scaffold, a plurality of vertical members interconnected by a plurality of extensible transverse members; a vertical slot within each vertical member; a hollow space within each vertical member behind the said vertical slot in each vertical member; a bracket member for each vertical member consisting of a vertical portion designed to fit within the said space in the said vertical member, a horizontal portion connected to the said vertical member and protruding through the said slot in the said vertical member and a diagonal support member connecting the said vertical portion and the said horizontal portion and protruding through the said slot in the said vertical member; pulley wheel on the top of each vertical member; a hand or power driven winch situated near the bottom of the central vertical member on the side of the said vertical member opposite to the said bracket member; a pair of pulley wheels situated on the back of the central vertical member on the side opposite the said bracket member; a rope or cable supporting the said bracket member on the said central vertical member passing over the said pulley wheel on the top of the said central vertical member and around the said winch; a rope or cable attached to each bracket member on each of the said outer vertical members passing over the said pulley on top of such outer vertical member, around one of the said pulleys on the back of the said central vertical member and around the said winch; a suitable plank or platform supported by the said bracket members.


2. A portable scaffold as described in Claim 1 the horizontal portion of each of the said bracket members being of tubular shape and open at the end remote from the vertical members; a bar of suitable size to fit within the said opening, the end of the said bar remote from the said bracket member containing a vertical boot or shoe to bear against the wall adjacent to which the scaffold is to be used.

3. In combination two portable scaffolds each as described in Claim 1, the horizontal portion of each bracket member being tubular in construction and open at the end remote from the vertical members; a male bar fitted within the open tubular ends of the horizontal portions of one bracket member on each scaffold; the whole assembly forming a self-supporting platform.