|Publication number||US1523961 A|
|Publication date||Jan 20, 1925|
|Filing date||Apr 16, 1923|
|Priority date||Apr 16, 1923|
|Publication number||US 1523961 A, US 1523961A, US-A-1523961, US1523961 A, US1523961A|
|Inventors||Heltzel Francis O|
|Original Assignee||Heltzel Francis O|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (6), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Jan. 20. 1925.
F. O. HELTZEL CONCRETE FORM Filed April 16, 1923 2 Sheets-Sheet 1 FI/Illlff/ll/llf/ 4 GU01 Mag v Jan. 20. 1925. 1,523,961
F. o. HELTZEL CONCRETE FORM Filed April 16, 1923 w 2 Sheets-Sheet 2 FiOTlELTZEL,
Elm-um 1 km;
Patented Jan. 20, 1925.
FRANCIS o. nnn'rznzt, or WARREN, OHIO.
Application filed April 16, 1923. Serial No. 632,370.
To all whom it may 007103772. 4 I
Be it known that I, FnANois O. I-Inurznn, a citizen of'the United States, residing at lVarren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements Forms, of which the following is a speclfication, reference being had therein to the accompanying drawing. The present invention relates to concrete forms, and more particularly to road forms using rails for defining the edges of a con-:.
crete road, sidewalk, or the like, this invention being an improvement over the concrete form disclosed in my copending application serial No. 543,868, filed March 15, 1922.
One of the objects of the invention'is the provision of a novel stake receiving member carried by the rail.
Another object is to improve the means for joining and securing the rail ends together, whereby to obtain more secure and rigid joints,-and also enabling each end of each rail to be fastened in place on the ground by means of a stake which also as sists in fastening the rails together.
With the foregoing and other objects in view, which will be apparent as the descrip-v tion proceeds, the invention resides ,in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without 'departing from the spirit of the invention.
The invention is illustrated in the accompanying drawings, wherein-- Figure 1 is a side elevation showing the joints between three rails and an intermedi ate stake socket member, portions being broken away.
Fig. 2 is a perspective view of a complete rail,- portions being broken away. i
Fig. 3 is a vertical cross section on the line 33 of Fig. 1.
Fig. .l: is a horizontal section on the line 4-4 of Fig. 1.
Fig. 5 is a crosssection on the hue 5-5 .of Fig. 1.
Fig. 6 is a perspective view of one of the latches. j
The rails 10, such as are used in the construction of concrete roads, sidewalks, and the like, as shown, are of sheet metal or rolled stock having the upright portions or webs 11, with outturned base flanges 12 at in Concrete their lower edges and the outturned top or tread flanges 13 at their upper edges. Said tread flanges 13 have the depending lips or supplementary flanges 13 for strengthening them. These rails are laid end to end and the road is built up by pouring the concrete between the opposite rails, which serve to define the edges of the road, while the flanges 13define the surface of the road at the opposite edges; In surfacing the road, it is the practiceto run a finishing machine or device on the treads of the rails, thereby imposing more or less weight on the rails, and the base flanges 12 are therefore of sufficient width to support the rails on the ground or road bed. As shown, the base flanges 12 are somewhat wider than the a tread flanges 13.
A longitudinally slidable latch 14 is pro vided at one end of each rail at the outer side of the web 11 and is slidable in a U-shaped guide 15 which has the angularly extending ends or feet 16 riveted or otherwise secured to the web of the rail near the corresponding end thereof. The latch 14,,as shown, is a casting or forging, and is preferably cored out to lighten the weight thereof. Said latch bears against the web 11 of the rail. The latch 1 1 of each rail is provided at the outer or forward end with an outstanding lug or portion 20, and said latch has the outwardly extending stop lug 19 at its inner or rear end to strike the guide 15 when the latch is projected for limiting the projection of the latch. The lug or portion 20 in striking the guide 15 will also limit the retraction of the latch.
Secured to each end portion of the rail at the ,outer side of the web thereof is a socket member 21 of loop form having the base or back plate 22 riveted or otherwise secured to the web of the rail adjacent to the corresponding end thereof. The latch 14 and portion 20 thereof are disposed permanently in the socket member 21 at the corresponding end of the rail, and when the latch is projected, with the corresponding rail ends in abutment and alinement, the latch is projected into the corresponding socket member of the adjacent rail. This provides a slip-joint connection between the rails, and when the rails are laid end to end, the latches are readily projected into the sockets of the companion rails, to maintain the rails in alinement and to support the rail ends tical displacement. The latches in fittin in the socket members 21 which are disposed close to ether at the adjacent ends ofthe rails, Wlll provide a rigid connection between the rails to prevent the corresponding end of either rail from being twisted or otherwise displaced out of alinement with the companion rail end. The portions of the latches and outer ortions of the socket members 21 are tapere and roject slightly beyond the edge of the base ange 12of the rail. The latch 14 is offset, as at 17, to slide across the base or back plates 22 of the socket members.
In order to securely fasten the rail ends together against separation and to hold them in place on the ground or road bed, the socket members 21 are provided in the upper and lower portions thereof near the yoke or intermediate portions thereof with apertures 23 for receiving stakes 24, and
- said apertures and stakes are preferably of circular cross section as shown. Thus, the stakes 24 can be driven down through the members 21, which also form stake sockets, in order to anchor the rail ends in place on the ground. The stakes also form parts of the joints for clamping the rail ends together. Thus, the portion or lug 20 of the latch .has notches 25 to register with the apertures 23 of the corresponding latch and stake socket members 21, when the latch is projected so as to fit within both of the companion socket members. Then, when the stakes 24 are driven down through the apertures 23 they will engage in the notches 25 of the latch, and the latch is forced tightly into place within the members 21, thereby clamping the rail ends together tightly in abutment. As aresult, the joint is made perfectly rigid and secure, the latch being clamped within each socket member. It is preferable to have a set screw 26 in the yoke or intermediate portion of each socket member 21 to bear against the corresponding stake and clamp the parts together against accidental loosening or separation. When the rails are laid end to end, the latches can be conveniently projected into the corresponding latch sockets of the adjacent rails, and the stakes 24 then driven down through the members 21 for making the joints rigid and anchoring them to the the rails then removed laterally from place.
ground. It will also be noted that the end of each rail is thus anchored to the ground. In taking the rails up, the set screws 26 are loosened and the stakes 24 withdrawn, which will permit the latches to be retracted and Each rail also has a; stake socket between the ends thereof of similar form with reference to the end socket members. Thus, the intermediate stake socketmember 27 is of loop form and has the base or back plate 28 secured by rivets or otherwise to the web 11 of the rail at the outer side thereof intermediate the ends of the rail. The upper and lower portions. of the member 27 have the apertures 29 for the passage of the stakes 31, and a set screw 30 is carried by the member 27 to bind against the stake. This enables the intermedate portion of each rail to be anchored in place on the ground, and the stakes 24 and 31 are driven downwardly across the edge of the lower flange 12 of the rail.
Havin thus described the invention, what is claime as new is 1. A concrete form comprisin rails to be disposed end to end, socket menibers carried by the adjacent ends of the rails, and a latch to fit within both socket members, both socket members and the latch having portions for the engagement of stakes.
2. A concrete form comprisin rails to be disposed end to end, socket mem ers carried by the adjacent ends of the rails, and a latch to fit in both socket members, both socket members having apertures for the passage of stakes and the latch having portions for the engagement of both stakes.
3. A concrete form comprisin rails to be disposed end to end, socket mem ers of loop form carried by the adjacent ends of the rails, and a latch to fit within both socket 1.-
members, said members having apertures for the downward passage of stakes, and the latch having notches for the engagement of both stakes.
4. A concrete form rail, 9. socket member carried h each end portion thereof, and a latch sli able in one socket member to be projected into the corresponding socket member of another similar rail, both socket members at the ends of the rail having stake-receiving apertures.
5. A concrete form rail, socket members carried b the rail at both ends thereof, a latch sli able in one socket'member to be projected into a corresponding socket member of another similar rail, both socket members of the rail having stake-receiving apertures, the latch having notches for the engagement of stakes driven through the corresponding socket members, and a guide member for the latch carried by the rail.
In testimony whereof I hereunto afiix my signature.
FRANCIS o. HELTZEL.
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|US9346454 *||Oct 18, 2011||May 24, 2016||Tim M. Leith||Reusable concrete form device|
|US20080022618 *||Sep 28, 2007||Jan 31, 2008||Jessop L A||Concrete form system with skin panel|
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|International Classification||E01C19/50, E01C19/00|