# US 4,393,568 A · Method for attaching wooden forms to a concrete surface

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- Number: US 4,393,568 A
- Document ID: US4393568A
- Status: Granted
- Kind: A
- Application number: 06/268,755
- Filed: 1981-06-01
- Granted: 1983-07-19
- Earliest claimed: 1979-04-16
- Inventors: Ramon Navarro
- Web page: https://patentgrep.com/patent/US4393568A

## CPC

- E04G 13/00: Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies {foundations, sills (E04G11/365 takes precedence; flat foundations, e.g. with lost forms E02D27/01; removable forms or shutterings for road-building purposes E01C19/50)}
- E04F 13/00: Coverings or linings, e.g. for walls or ceilings (flooring E04F15/00; decoration of surfaces, mosaic work B44, e.g. paper-hanging B44C7/00; made of webs, e.g. of fabrics or wallpaper {, as such, or their manufacturing} D03D, D04G, D04H, D06N, D21H; construction of {false} ceilings E04B9/00; roofings or similar water-tight coverings against precipitation E04D)
- E04G 17/14: Bracing or strutting arrangements for formwalls; Devices for aligning forms (E04G25/00 takes precedence; {connecting and aligning E04G17/04})
- Y10T 29/49833: Punching, piercing or reaming part by surface of second part
- Y10T 29/49895: Associating parts by use of aligning means [e.g., use of a drift pin or a "fixture"]
- E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method which involves an improved fastener member or form bracket for use in attaching a wooden form to a concrete surface, is disclosed. The form bracket comprises a base plate configured to be disposed substantially abutting the concrete surface, and a side plate attached to the base plate. The side plate is configured to be disposed abutting the wooden form. Apertures are provided in the base plate for insertion of a fastener member, such as a nail, to attach the form bracket to the concrete surface. At least one pair of apertures configured for the receipt of a staple of a predetermined size is provided in the side plate. A standard size staple may be driven through the pair of apertures into the wooden form to attach the side plate to the wooden form.

## Claims

### Claim 1

A method of forming a tilt-up concrete wall panel comprising: aligning wooden form members on a horizontal slab of set concrete to define a length and width of a tilt-up concrete panel, placing a plurality of brackets in abutment with the exterior surfaces of the wooden form members, each of the brackets having a vertical side plate abutting the outer surface of the adjacent wooden form member and a horizontal base plate perpendicularly disposed relative to the side plate and extending outwardly from the adjacent wooden member in abutment with the top surface of the horizontal slab, said vertical side plate having a first pair of alignment apertures and a second pair of staple receiving apertures, driving a fastener through an aperture in the base plate to attach the base plate to the horizontal slab, positioning a pair of alignment probes of a staple gun into said first pair of apertures to align a staple with said second pair of apertures, and driving said staple through said second pair of apertures in the side and plate into the adjacent wooden form member.

### Claim 2 (depends on 1)

The method defined in claim 1, in which the bracket member further comprises a triangular-shaped reinforcing plate positioned at one edge of the base plate and the side plate and disposed in a plane perpendicular to the planes of the base plate and side plate.

### Claim 3 (depends on 1)

The method defined in claim 1, in which the apertures on the vertical side plate are spaced at a distance of approximately 3/8 of an inch from one another.

### Claim 4 (depends on 1)

The method defined in claim 1, in which the base plate includes a pair of spaced tubular members, each tubular member containing an aperture and acting as a nail guide for inserting and guiding a nail through the tubular member into the concrete surface of the slab.