US2306450A

US2306450A - Form for double curbs

Info

Publication number: US2306450A
Application number: US343578A
Authority: US
Inventors: Lewis William Hurst
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-07-02
Filing date: 1940-07-02
Publication date: 1942-12-29
Anticipated expiration: 1959-12-29

Description

Dec. 29, 1942. w. H. LEWIS 5,

I FORM FOR DOUBLE CURBS 2 Sheets-Sheet l Fild Jul 2, 1940 W H. LEW/5.

8 W I Gttomeg Bnventor 29, 1942. w. H. LEWIS I 2,306,450 FORM FOR pouBLE CURBS 2 Sh e etS-Sheet 2" Zhwentor Patented Dec. 29', 1942 UNITED STATES FATENT oFFic FORM FORDOUBLE cones William HurstLewis, Los Angeles, Calif. ApplicationJ1ily 2, 1940, Serial No. 343,578 Claims. (01. 25-118) 7 My present invention relates to forms for double curbs for highways.

My invention will be shown and described in connection with and as facilitating the construction of double curbs for highways, but it will be understood that the spirit of this invention is not limited thereto, but that the apparatus of this invention may be applied to the construction of Walls of other structures.

One of the principal objects of this invention is to provide an apparatus of this class which'may be easily placed, clamped and held in the desired. position, and easily, quickly, and accurately adjusted to the proper dimensions for forming the curbs or walls in the desired locations.

An important object of this invention also is the provision of an apparatus of this class which may be easily and quickly removed from the completed and set curbs or walls and moved to new locations for forming others. ,7

Another important object of this invention is to provide an apparatus of this class which may be readily held in place by the previously come pleted road or slab section, or the prepared road bed therefor, and which is also rigidly supported by the curbs or walls to be formed.

A further important object of this invention is to provide an apparatus of this class in which the side limiting form walls are of unequal height, and which is so constructed that the apparatus will not interfere with the movements or operations of the strike-off or troweling de-' vices for the upper portions of the curbs or walls.

It is also an important object of this invention to provide sections or units for a form of this class which are single and economical of construction, durable, and which will not readily deteriorate or get out of order. p v With these and other objects in view, as will appear hereinafter, I have devised forms for double curbs, and the like, as will hereinafter be described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this application, in which:

Fig. 1 is a fragmentary plan view of a preferred construction of one section of my form apparatus for making double curbs for highways;

Fig. 2 is a fragmentary side elevational view thereof;

Fig. 3 is a fragmentary end view thereof Fig. 4 is also an end view thereof, taken from the opposite end; w

Fig, 5 isa fragmentary end view of a slightly modified form'of construction of my apparatus;

' Fig. 6 isan' enlarged section taken through 6+6 of Fig. 2; and;

Fig. 7 is an enlarged section of the same portion, taken through I-----! of Fig. 1.

A new pavement construction, to take care of modern trafiic, is often constructed over or .upon the old pavement, the crown or center of the old pavement providing or being used as a space for a road-separating wall, which is usually in the form of a double curb. The new highway or roadway is built outwardly from the opposite sides of the double curb. This new highway, indicated'by A, is laid over the old pavement, indicated by B, before the double curb is constructed, and the adjacent edges of the new highway provide the outer walls of the curb, desig nated C and C and also provide means for anchoring my form or apparatus thereto.

Myform apparatus, as shown in the drawings, may be madein sections of 12 to 16 feet, or other lengths to handle conveniently. r Each section is provided with at least two re taining structures or bridge portions D, which are anchored to the edge portions of adjacent slabs of the new pavement, and which support the forms E for the curbs. V

Each retaining structure or bridge portion consists of basemembers or shoes I, uprights 2, and a cross piece. I

Each base member 'or shoe consists of a plate l which is adapted to rest upon the edge of the completed new pavement, a downwardly extending flange I which is positioned against the inner edge of the new pavemenhand transverse guides l above the supporting plate I the ends of the guides being supported in upwardly directed flanges i At the inner side of the flange I are spurs I which are adapted to bite into the edge of the completed pavement.

The lower end of the uprights are mounted on the guides l so that they may slide in a direction at right angles to the edge of the completed pavement." The outward position of the uprights is determined by set screws 4; These set screws are intended to draw the base members or "shoes I tightly against the pavement; The uprights are adjustably secured to the ends of thecross piece of the retaining structure: This cross piece consists preferably of a central channel member '3 into the-ends-of which are telescopically mounted smaller channels3 to "the ends of whichthe uprights '2 are secured. The

members

3 and 3*" areprovided with sets of reg:

istering holes so that the cross piece 3 may be elongated as desired.

From the center of the cross piece of both the retaining structures depend supporting aprons l l which are provided at their opposite edges with vertical slots N in which brackets l2 are vertically and horizontally slidable. The lower portions of the outer sides of these brackets carry the curb forms E. These forms consist of a pair of spaced apart vertical plates l3 and M. The plates are of the length of the form sections, mentioned above, and each plate is secured to and carried by the brackets I2 at one side of the supporting aprons. These form plates are rigid, such rigidity being provided by angles 13 and M at the inner sides of the plates, which angles are sceured to the brackets l2.

The brackets are supported directlyv from the cross piece or bridge member 3, and depend preferably from the lower ends of vertical screws 2!. These screws are preferably screwably mounted in the bridge member 3 and are swivelly con nected at their lower ends with supporting guides 22 which are slidable in transverse slots 23* provided in lateral projections supporting members 23 which are secured toand extend outwardly from the upper ends of the brackets l2. The vertical slots at the edges of the aprons permit the brackets to be raised and lowered by the screws 2|, and the slots 23 permit the brackets to be moved inwardly and outwardly while supported at the lower ends of the screws. The upper ends of the screws are provided with crank handles 2l and these screws are also provided with looking lever nuts 24 for rigidly holding the form members I3 and l4 in vertically adjusted positions.

Each of the aprons carries at its lower end a lever 3 i the handle end of which extends preferably a considerable distance above the bridge or cross piece. The aprons are provided with quadrants li by means of which the handle ends of the levers may be locked into the desired angular position. The lower portion of each lever is provided with

fittings

32 and 33, which are pivoted thereto at the opposite sides of the pivotal axis of the lever. The

fittings

32 and 33 are provided with

rigid links

34 and 35, which are pivotally connected, respectively, to the inner sides of the lower portions of the form plates i3 and 14. The upper portions of the pivotal fittings are in turn pivotally connected to

links

36 and 31, which are pivotally connected at their outer ends to the inner sides of the upper portions of the form plates l3 and 14. Each of the

links

34, 35, 38, and 3'! has a turn buckle for adjusting its length. Thus, when the lever 3! is oscillated, the form plates l3 and !4 may be forced outwardly to the des red position, preparatory to constructing the wall or curb, and may also be withdrawn from the completed wall or curb, when the levers are oscillated in the opposite direction.

In carrying out my method of constructing the double curbs, I have provided a strike-off or trowel member 4|, of the desired shape. The upper edge of this strike-off member 4| rests upon the upper edge of one of the form plates, while the lower edge rests upon a suitable lining strip 42 at the edge of the completed highway or slab A. This strip is of the thickness of the plate i of the base or pad I, so that the strike-off member may be easily moved the full length of the form section.

In Fig. ,of the drawings I have shown a slight modification for the use of my form apparatus upon a dirt road bed, rather than upon completed pavement. This base or pad, designated 5|, is slightly larger, and is anchored in the dirt of the pad by suitable stakes 52.

Though I have shown and described a particular construction, combination and arrangement of parts and portions, and a certain modification thereof, I do not wish to be limited to the same, but desire to include in the scope of my invention the construction, combination, and arrangement substantially as set forth in the appended claims.

I claim:

1. In an apparatus of the class described, a bridge support having supporting legs at its opposite ends, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes, and spaced apart form members depending from the middle portion of the bridge support.

2. In an apparatus of the class described, a bridge support having supporting legs at its opposite ends, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes, spaced apart form members depending from the middle portion oi the bridge support, and lever means for adjusting said form members with respect to each other and with respect to the support for readily shifting the form members into wall-forming position and for forcibly removing the same from the completed wall.

3. In an apparatus of the class described, a bridge support having means for laterally extending the same and provided with downwardly extending supporting legs at its opposite ends, said legs being lengthwise extensible, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes. and spaced apart form members depending from the middle portion of the bridge support.

4. In an apparatus of the class described, a bridge support having supporting legs at its opposite ends, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes, and spaced apart form members depending from the middle portion of the bridge support, said shoes having downwardly extending flanges at their adjacent inner sides and spurs at the inner sides of the flanges.

5. In an apparatus of the class described, a

bridge support having supporting legs at its opposite ends, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes, spaced apart form members depending from the middle portion of the bridge support, and means for adjusting said form members with respect to each other and with respect to the support, said shoes having downwardly extending flanges at their adjacent inner sides and spurs at the inner sides of the flanges.

6. In an apparatus of the class described, a bridge support having supporting legs at its opposite ends a supporting apron extending transversely with respect to the apparatus and depending from the middle portion of the support, brackets guided vertically and horizontally on the opposite edges of the apron, means at the upper portion of the support for raising and lowering the brackets, form members carried at the outer sides of the brackets, and means for adjusting the brackets horizontaly with respect to the apron.

'7.'In anapparatus of the class described, a bridge support having supporting legs at its op-i the opposite sides of its pivotal axis, to the upper and lower portions of the form members.

8. In an apparatus of the class described, a transverse support, a pair of spaced apart form members depending from the support, means between the form members for adjusting the same horizontally with respect to each other, and other means for adjusting the form members vertically with respect to the support.

9. In an apparatus of the class described, a bridge support having supporting legs at its opposite ends, shoes at the lower ends of the legs, means for laterally adjusting the support with respect to the shoes, spaced apart form members depending from the middle portion of the bridge support, and means between the form members to facilitate the lateral adjustment thereof and for securing the same with. respect to each other.

10. In an apparatus of the class described, a bridge support having supporting legs at the opposite ends, form members at the lower ends of the legs, means for laterally adjusting the support and shoes with respect to each other, and spaced apart form members depending from the middle portion of the bridge support.

WILLIAM HURST LEWIS.