Adjustable concrete form apparatus
First Claim
1. A form apparatus for constructing a concrete building wall to extend up from the floor of the building at an outside edge of said floor without using scaffolding at the outside of the building, said form apparatus comprising:
- an outer vertical form section having a lower end with an inside face for abutting engagement with said outside edge of the floor;
a pair of vertical end form sections at the opposite ends of said outer form section;
vertical pivot means at each end of said outer form section acting between the latter and the adjacent end form section for pivotal adjustment of each end form section to a position extending inward from said outer form section;
means on said outer form section near the top at each end for operatively connecting the upper end of a respective floor-mounted turnbuckle brace to said outer form section to support the latter from said floor;
elongated screw-threaded rods extending generally horizontally closely above said floor and operatively connected to said outer form section near its lower end, brackets loosely receiving said rods and attachable to said floor, and nuts threadedly engaging said rods at the inner side of said brackets for pulling and holding the lower end of the outer form section tight against the outside edge of the floor;
lower spacer sleeves loosely receiving said rods and extending inward from said outer form section;
a vertical inner form section having upwardly extending slots therein which are open at its bottom edge to slip freely over said rods at the inner end of said lower spacer sleeves;
nuts threadedly mounted on said rods outward from said brackets for holding the lower end of said inner form section against the respective inner ends of said lower spacer sleeves;
tie rods connecting said inner form section to said outer form section near their upper ends;
and means operatively associated with said end form sections for releasably locking said end form sections to said inner form section with said end form sections extending inward from said outer form section.
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Accused Products
Abstract
The concrete form apparatus includes a pair of spaced form sections. The form sections are held in properly spaced relation by spreader sleeves and threaded adjustment means in the form of a threaded rod which engages nuts suitably positioned on the form sections. The form sections can be erected and dismantled from the inside of a building, thus eliminating the need for any type of exterior scaffolding and the expense of erecting and dismantling it. The threaded adjustment means makes it possible to adjust the form sections to the proper horizontal spacing from inside the building. A second threaded adjustment means provides for vertical adjustment of the form sections.
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Citations
6 Claims
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1. A form apparatus for constructing a concrete building wall to extend up from the floor of the building at an outside edge of said floor without using scaffolding at the outside of the building, said form apparatus comprising:
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an outer vertical form section having a lower end with an inside face for abutting engagement with said outside edge of the floor; a pair of vertical end form sections at the opposite ends of said outer form section; vertical pivot means at each end of said outer form section acting between the latter and the adjacent end form section for pivotal adjustment of each end form section to a position extending inward from said outer form section; means on said outer form section near the top at each end for operatively connecting the upper end of a respective floor-mounted turnbuckle brace to said outer form section to support the latter from said floor; elongated screw-threaded rods extending generally horizontally closely above said floor and operatively connected to said outer form section near its lower end, brackets loosely receiving said rods and attachable to said floor, and nuts threadedly engaging said rods at the inner side of said brackets for pulling and holding the lower end of the outer form section tight against the outside edge of the floor; lower spacer sleeves loosely receiving said rods and extending inward from said outer form section; a vertical inner form section having upwardly extending slots therein which are open at its bottom edge to slip freely over said rods at the inner end of said lower spacer sleeves; nuts threadedly mounted on said rods outward from said brackets for holding the lower end of said inner form section against the respective inner ends of said lower spacer sleeves; tie rods connecting said inner form section to said outer form section near their upper ends; and means operatively associated with said end form sections for releasably locking said end form sections to said inner form section with said end form sections extending inward from said outer form section. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification