US2250839A

US2250839A - Adjustable curb form

Info

Publication number: US2250839A
Application number: US337905A
Authority: US
Inventors: Bernard F Perry
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-05-29
Filing date: 1940-05-29
Publication date: 1941-07-29
Anticipated expiration: 1958-07-29

Description

Alf-"FL July 29 1941- B. F. PERRY l 2,250,839

ADJUSTABLE CURB FORM Filed May 29, 1940 e/vaefd I 10e/y www Patented July 29, 1941 UNI-.Teo stares ADJusrABLE ouanglitonn y Bernard'F. Perry, Rochester, N'. Y.' Application May 29,1940,'sena1fua:satana zgolaims, v(c1: 25"-118). f;

This invention relates. to an adjustable curb form. V t.

The invention is .directed to deck forms for user in the building of concrete overpasses, vtruss bridges and the like which are constructed for the monolithic pouring of the pavement, sidewalks and curbs as a single unitary mass. Such forms embody bottom and side walls for conning the` poured concrete and curb forms intermediate the side walls and it is lthese curb forms together With their adjustable relationto the bottom and ,side walls Vwith which the instant invention is especially concerned. f

I'he aforementioned deck forms are subject to lvdeiection as a result of the pouring of the concrete and if a smooth and pleasing grade is to be` obtained on the finished curbs it has been found necessary to support the curb forms from the bottom and side walls of the deck form in such manner that they may be readily adjusted after the concrete is poured and while` it isstill green preparatory to the finishing of. the curb-s.

It is accordingly aV primary object of this in# vention to provide Vcurb forms in operative association with the bottom. and side walls of acombined pavement and sidewalk form whereby saidl curb formsv are capable of being readily adjusted for proper curb grade after concrete has been poured in the combinedv pavement and sidewalk form.

A further purpose of the invention is the provision of a deck form embodying bottom and side walls and curb forms intermediate the side walls and adjustably-supported `therefrom as well as from the bottom Wall.

Yet another aim is the formation of a curb form including means for adjustably supporting same vertically above the bottom Wall of a concrete form, the adjustable supporting means being so constructed and associated with the curb form that said means may readily be removed after the concrete has been poured in the 'con-, crete form.

For a more complete understanding of the objectsand nature of the invention, reference will be had to the accompanying drawing wherein- Figure 1 is a transverse section of a portion of a deck form constructed in accordance with a preferred embodiment of the invention and `Referring now in; detaiL to the drawing bythe use of reference characters, D designates ,the deck, iorm initsentirety. In its, elementalfy form the deckv includes opposite side walls l- (only Qne of whichi-s shown) and a bottomwall; ifi; The side walls; I9, are preferably backed bysuitably spacedverticallydisposedY studs l |12; anda a pair of; vertically. spaced.` horizontal wales I3.;are Secured to the outer edges of the studs adjacent the upper ends thereof. C identifies. the irriproved Curb form and` this comprisesa timber approximatelytwo inches thick andof a width or depth, equal to the desired depthof the curb.; The` top of ,the Curb timberis slightly bevel'led as at i4 toY permit accurate scr-ceding of' the sidewalk S which slopes toward the curb asillustrated. The bottom of the form C is sharply bevelled as indicated at l5 Vto .permit finishing the pavement concrete beneath same and; the

formation of the angle between the pavement and curb. The curb form C is supported yfor,

parallel alignment,v with the side wall i0, by means of two unequally and vertically spaced horizontal series of rods i6 and il, said rods being horizontally spaced with the rods IS. alternating with the rods il.V The rods l5 and il' showing the concrete ias having been poured, the

are threadedl at their opposite ends where they extend through the curb form C and. wales |33 nuts I8 and ISvbeingapplied on the. threaded ends of thejrods in bearing engagement with the form CV and wales |22, respectively, The rods not only function to hold the curb form. C at a uniform horizontal distance from the wall Il) under weight of the concrete but additionally serve for horizontal adjustment of the curb form C relative to the wall lil.

Blocks 2| are secured to the exposed face of each of the curb forms C in horizontally spaced relation and each block is provided with an aperture 22 extending through its depth yand parallel to its exposed sides. A rod 23 of slightly less diameter than aperture 22 is projected through same, said rods 23 terminating in threaded ends 24 disposed slightly below the line.

of sidewalk S Ias illustrated in Figure 1. The upper ends of the rods 23 are threaded for a substantial distance for adjustment thereon of From the above it will be seen that the curb form C is adjustably supported by its adjacent side Wall and the bottom Wall of the deck form thus assuring not only the initial adjustment of the curb form for proper grade and alignment, but further providing for adjustment after the concrete has been poured and` partially set to correct deflection and thereby restore proper alignment and grade of the curb form. The curb form C is initially positioned as indicated in Figure 1, that is, in slightly outward divergent relation to the adjacent side Wall I to provide the inclined Wall defining the finished curb and the form is properly adjusted by means of the rods I6, I1, 23 and 29 preparatory to the pouring of the concrete in the deck form D. With the curb form thus initially adjusted, the concrete is poured to form the monolithic concrete structure embodying the pavement P and sidewalks kS, the latter being elevated to provide curbs defined by the curb forms C'. After maximum deflection has resulted in the deck form it may be found that; the curb forms are not properly aligned or adjusted to obtain a suitable grade on the curbs and that the finished curbs do not present a pleasing appearance. Consequently, the curb forms may readily be adjusted laterally by means of the nuts I8 and I9 on the threaded ends of the rods I6 and I1 and also adjusted vertically to obtain proper curb grade by means of the

nuts

25 and 26 on the threaded rods 23. The curb form may readily be elevated upon retracting the nuts 25 and correspondingly advancing the nuts 26 and it may be lowered by retracting the nuts 26 and correspondingly advancing the nuts 25, both sets of nuts being drawn up tight against opposed edges of the curb form after proper adjustment has been obtained. The apertures 22 in the blocks 2| being of greater diameter than the rods 23 permit proper movement of the curb form during adjustment thereof.

After proper setting of the concrete the deck form including the curb forms are removed and by the provision of the elongated nuts 21 the rods 23 can readily be withdrawn after which the holes in the concrete formed by the rods are filled with grout. Furthermore, to eliminate the presence of metal on the under surface of the concrete structure, the cones 30 can readily be removed after dismantling of the deck form or by enlarging holes previously bored in the bottom Wall I I, the resulting holes being lled with mortar.

While the curb form described is particularly adapted for use with deck forms as disclosed, it can also find application in concrete floor construction in concrete buildings, the adjustment assuring that the surface of the floor slabs Will be exactly level when nished.

Although I have disclosed a single speciiic embodiment of my invention, this is to be considered as illustrative only and not restrictive, the scope of the invention being dened in the claims hereto appended.

What I claim and desire to secure by Letters Patent is:

1. A curb form for use in a concrete deck form having side and bottom walls, the curb form comprising a member elongated in cross-section and having opposed parallel sides one of which is adapted to confine poured concrete in the formation of a curb, rods Ifor supporting said member horizontally from said side wall, apertured blocks secured to the other side of said member in spaced relation throughout the length thereof, rods adapted to be supported from said bottom Walland extending through the aper tures in saidY blocks, and means for adjusting the rods in said apertures for moving the member relatively to said `bottom wall for accuracy of curb grade. y

2. A curb form comprising an elongated member having opposed parallel side Walls and a slightly bevelled top wall and a sharply bevelled bottom wall, blocks secured t0 the outer of said opposed parallel side wallsin spaced relation throughout the length thereof, each of said blocks having an aperture therethrough in a plane substantially parallel to said side walls,Y al rod projecting through each of said apertures, each rod beingthreaded at its ends and intermediate said ends, an adjusting nut for each of said threaded areas, the lower one of said adjusting nuts having the threaded end of a .second rod secured thereto, the opposite threaded end of said second j rod having an internally threaded supporting cone, a plurality of 'adjustable horizontally extending spaced staggered rods projecting transversely through said member, and Wales adjustably carried by said staggered rods in spaced relation to said member.

BERNARD F. PERRY.