US3016225A - Form setting devices for cement sidewalk and driveway forms - Google Patents

Description

Jan. 9, 1962 R. S. HUGHES ET AL FORM SETTING DEVICES FOR CEMENT SIDEWALK AND DRIVEWAY FORMS Filed June 15, 1959 ETII, J I| 10/ g I I i I I I I l f 10 I i /6 i /6 T: I {20/ I I 5'! 203 I I i 300 '{200 I 5 I 21' .Z T[ 10 i I I I E I I 2 Sheets-Sheet 1 Jan. 9, 1962 R. s. HUGHES ET AL FORM SETTING DEVICES FOR CEMENT SIDEWALK AND DRIVEWAY FORMS Filed June 15, 1959 2 Sheets-Sheet 2 ATToMSY Filed June 15, 1959, Ser. No. 820,208 4 Claims. (Cl. 248230) This invention relates to improvements in form setting devices with which sidewalk and driveway forms may be accurately set in place and to grade ready for receiving cement or concrete in its plastic state therebetween. V

The primary object of the invention is to provide an improved form setting device for wood and other sidewalk and driveway forms with which such forms may be easily, rapidly and economically set to line and grade ready for the placement of cement or concrete therebetween with a minimum of relatively unskilled labor, which forms may be readily dismantled and reused, all without damage other than normal wear and tear either to the form setting device or to the forms.

A further object of the invention is to provide an improved, simplified and inexpensive form setting device comprising a stake for driving into the ground adjacent a prepared grade, a transversely disposed form gripping and holding member adapted to receive and releasably hold in spring-grip. relationship a form strip including at the rear thereof a sleeve element sized to telescope relatively freely over said stake, the said sleeve element being flanged and slotted at the rear thereof to pivotably accommodate a cam-lock, a cam-lock pivoted in said sleeve element flange including a cam and an integral locking lever extending from said sleeve element flange, the same cam being formed to engage the said stake and lock said form gripping and holding member at a selected elevation and angular relationship to the said stake whereby to set the form carried thereby properly to line and grade.

Still another object of the invention is to provide an improved form setting device consisting of a stake and a form supporting and gripping assembly telescoped onto the said stake including means for locking the said assembly to said stake at the desired elevation and angular relationship with respect thereto and to a prepared grade, the said form supporting and gripping assembly being composed of a fewsimple, light weight stampings which may be assembled and manufactured at low cost into a rugged, inexpensive, reuseable unit.

1 Other objects of the invention will becomeapparent by reference to the following detailed description taken in connection with the accompanying drawings, in which:

- FIG; 1 is a side elevational view of a form setting device embodying the invention showing the device in use.

FIG. 2 is a rear elevational view of the construction shown in FIG. 1. v FIG. 3 is a fragmentary front elevational view of the U ted Sttes Patent O form setting device taken on the line 33 of FIG. 1,

the dot and dash lines indicating the angle to which the form supporting and gripping assembly may be tilted in respect to the stake thereof.

- l FIG. 4 is a rear elevational view of the channel element of the form supporting and gripping assembly.

FIG; 5 'is a rear elevational view of the sleeve and cam-lock mechanism of the form supporting and gripping assembly. v I

FIG. 6 is an exploded side elevational view of the form supporting and gripping channel and the sleeve and cam-lock mechanism of the form supporting and gripping assembly FIG. 7 is an exploded top elevational view of the form supporting and gripping channel and the sleeve and cam- 3,016,225 Patented Jan. 9, 1962 ICE lock mechanism of the form supporting and gripping assembly.

FIG. 8 is a fragmentary side elevational 'view of the form setting device similar to FIG. 1 but with the form not shown.

FIG. 9 is a horizontal sectional view taken on the line 99 of FIG. 8showing the preferred clearance between the stake and the sleeve element of the form supporting and gripping assembly which permits limited tilting of the said assembly with respect to the stake to which it is removably fixed by the cam-lock mechanism.

FIG. 10is a plan view of a pry element telescoped on the stake of the form setting device for use in re moving the stake from the ground when dismantling the forms after a sidewalk or driveway has been poured and has set. 1

Referring now to the drawings whereinlike reference numerals refer to like and corresponding parts throughout the several views, the particular embodiment of the improved form setting device disclosed for the purpose of illustrating the invention consists of a stake 10 and a form supporting and assembly 11 telescopingly mounted on the said stake 10 and anchorable thereto by a cam-lock mechanism 12 carried thereby, all in a manner to admit of minute and exact setting of forms 13. The form 13 shown in FIGS. 1 and 2 is indicated to be a 2 x 6 wooden form. However, it is to beunderstood that other sizes of wooden forms 13 such as 2 x 8 or 1 x 6 and 1 X 8, or steel or extruded aluminum forms, may be employed by proportioning the form supporting assembly 11 to accommodate them.

The stake-10 is preferably formed of a hollow tube flattened and pointed at its lower end as indicated at 100, and is capped at its upper end by a suitable cap 101 to prevent damage to the upper end of the stake 10 as a result of repeatedly driving it into the ground 14. A pry element 15-consisting of a rectangular plate reinforced by crimping at 16 and apertured at 17 -is telescoped onto the stake 10. The aperture 17015 the pry element 15 is slightly larger than the outside diameter of the stake 10 to permit it to slide relativelyfreely there-;

along. When removing the stake 10 from the ground .14, the pry element 15 is slid along the stake 10 to a position such as indicated in FIGS. 1 and 2. A lever, such as a shovel or the like, not shown, is caused to lift UP on one side of the pry element 15 which temporarily anchors the pry element 15 to the stake 10 and facilitates the removal of the stake 10 from the'ground 14 when dismantling forms 13 after use.

The form supporting and gripping assembly 11 of the improved form setting device illustrating the invention consists of a transversely disposed form engaging and supporting channel 20, a vertically disposed sleeve element 21 suitably fixed to and extending rearwardly froin the said form engaging and supporting channel 20, and a cam-lock lever 22 pivotably mounted on andthrough a'rearwardly extending U-shaped bracket 210 of the sleeve-element 21 by means of which the said form supporting assembly 11 maybe removablyfixed into the desired vertical and horizontal or tilted position with respect to said stake 10 and a prepared grade 140.

As shown throughout the drawings the form engaging and supporting channel 20includes' a back 200, a top flange 201 and a bettom flange ,202, and is formed'from a relatively rigid s't'eelof sufficient resiliency to perform its function. The'outer edgeof the top flange 201 is turned down to provide a' dependingcontinuo'us lip 203 there-along. The bottom flange 202 is 'bent'sligh tly upwardly and then downwardly to provide a continuous ridge 20fltherealongp The distance b etween the bottom of the top flange 201of the channel 20 and the said continuous ridge 204 of the bottom flange 202 thereof is slightly less than the depth ,of the form 13, and the distance from the front of the channel back 200 and the rear of the continuous lip 203 along the outer edge of the top flange 201 is substantially equal to the thick ness of the form 13. This relationship permits a form 13 to be hooked under the continuous lip 203 of the top flange 201, and, when the lower portion of the said form 13 is urged from its dot and dash position 130 shown in FIG. 1 to the full line positionshown therein, the said form 13 is received and heldin a spring grip relationship by the said .formengaging and supporting channel 20 vertically within the flanges 201 and 202 thereof and inwardly against the inner or front surface of the back 200 thereof. Thusly, the form 13 may be quickly and firmly received and engaged by the form engaging and Supporting channel 20 of the form supporting and gripping assembly 11, and quickly removed therefrom, all without damage other than normal wear to either the form 13 or the form engaging and supporting channel 20.

The back 200 of the said form engaging and supporting channel 20 is provided with a rectangular aperture 205 centrally thereof, and is embossed at 206 each side of the said aperture 205 leaving a recess 2060 at the inner surface of the said channel back 200 adjacent the said rectangular aperture 205 therethrough.

The sleeve element 21 is preferably formed of a single piece of metal generally U-shaped in cross section with spaced side Walls 211 and a pair of flanges 212 extending laterally therefrom. The normally closed end of the said U-shaped sleeve element 21 is formed into a rear- Wardly extending narrow U-shaped bracket 210 having a slotted aperture 213 in the rearward end thereof to accommodate a cam-lock lever 22 as hereinafter described. The flanges 212 of the sleeve element 21 and the embossed portion 206 of the back 200 of the form engaging and supporting channel 20 are tabbed at 24 and apertured at 25 respectively to permit anchorage of the flanges 212 of sleeve element 21 to the back 200 of the form engaging and supporting channel 20 after the said sleeve element is assembled therethrough as best shown in FIGS. 6, 7 and 9. The tabs 24 are bent over after assembly as indicated in FIG. 9.

The vertical aperture 2100 through the sleeve element '21; after assembly to the back 200 of the form engaging and supporting channel 20, is preferably longer from front to back than the width thereof to permit the pointed end 100. of the stake to be telescoped therethrough. The width of the said vertical aperture 2100 through the sleeve element 21 is preferably somewhat wider than the diameter of the stake 10 to permit the form engaging and supporting channel 20 to tilt to a limited degree with respect to the said stake 10 as indicated by the dot .and dash lines 2000 in FIG. 3.

The spacing between the side walls of the narrow rearwardly disposed U-shaped bracket 210 of the sleeve element 21 is such as to accommodate therebetween the cam-lock lever 22 which includes an integral cam element 220. The said cam-lock lever 22 is preferably pivoted on a rivet 23 extending through the cam element 220 thereof and through the side walls of the narrow,

U-shaped bracket 210 integral with and extending rearwardly from the sleeve element 21, 'all as shown in the drawings. The cam element 220 of the cam-lock lever 22 is formed to engage the stake 10 as best shown in FIGS. 1, 8 and 9 to removably fix the form engaging and supporting channel 20 in any position to which it may he slid or tilted along with respect to the stake 10.

It will be noted that the locking of the cam-lock lever 22 by moving it from its unlocked dot and dash position to its locked full line position shown in FIG. '8 not only removably fixes the form engaging and supporting channel 20 in the desired position .onthe stake 10, but it pressesthe stake 10 against the said form engaging and supporting channel 20 above and below the rectangular aperture 205'in the back 200 thereof while simultaneously pulling the flanges 212 of the said sleeve element 21 against the recess 2060 at the rear of the embossed portion 206 of the said channelback 200. This construction permits the use of relatively light gage material in the sleeve element 21 and makes possible the assembly of the sleeve element 21 to'the form engaging and supporting channel 20 by the simple tube means 24.' As a matter of fact, except for the convenience of having the said sleeve element 21 and the cam-lock mechanism car-- ried thereby assembled to the said form engaging and supporting channel 20, securement together of the sleeve element 21 and the channel element 20 is not essential.

In using form setting devices embodying the invention, the ground 14 is properly graded at 140 with pockets at 1400 located at the sides of the graded area to accommodate form Setting devices at suitable intervals along the form 13 and at longitudinal joints therein. The stake 10 which telescopes through the sleeve element 21 of the form engaging and supporting channel 20 of each form setting device is driven in the ground 14 at the proper location with a suitable length of the said stake 10 extending above the prepared grade 140. Forms 13 are then inserted in the form engaging and supporting channels 20 at the longitudinal joints between forms 13 and also between said joints if the said forms 13 are extremely long. The form engaging elements 20 are then raised to the proper elevation, and slope if the forms 13 are on a slope, and the cam-lock lever 22 is moved from its horizontal position to its down position whereby to lock the forms 13 in place. Cement or concrete 30 in its plastic state is then poured in place between laterally spaced forms 13, only one form being shown in the drawings. The cement or concrete is then smoothed or troweled to the desired surface finish, and is allowed to set.

After the said cement or concrete 30 has set, the camlock lever 22 is raised, and the stake 10 is removed from the ground 14 preferably by prying upwardly on one side of the pry element 15 telescoped along the said stake to the netessary height to accommodate a suitable pry lever such as a shovel or pick. After the stake 10 is lifted upwardly, but not removed from the sleeve element 20 of the form engaging and supporting channel 20, it may be wiggled laterally of the finished and set cement or concrete sidewalk or driveway 300, and the depending lip 203 of the top flange 201 of the form engaging and supporting channel 20 will pull and break the form 13 away from the edge of the said finished sidewalk or driveway 300. As is customary in forming for cementitious structures, the form setting device of the invention and the forms 13 should be properly oiled to prevent adherence of the cement or concrete 30 thereto, and to assure dismantling of the forms 13 after the cement or concrete 30 has been set without damage to the forms 13 or the form setting devices.

Although but a single embodiment of the invention has been disclosed and described in detail, it is obvious that many changes maybe made in the size, shape, arrangement and detail of the various elements of the invention, all without departing from the spirit and scope thereof as defined by the appended claims.

We claim:

1. In a form setting device for accurately setting wood sidewalk and driveway forms to the desired line and grade on stakes driven into the ground alongside a prepared grade with a portion of said stakes extending thereabove, said device comprising a generally transversely disposed form supporting channel including a back, -a top flange having a depending outer lip and a lower flange formed with a longitudinal upwardly disposed continuous ridge along the center thereof, said channel being relatively rigid yet sufliciently resilient to permit said form to be removably secured between the flanges of said channel by hooking the upper portion of said form under the depending outer lip of said upper channel flange and forcing the bottom thereof in spring gripping engagement with the said ridge in the lower channel flange, a bracket mounted centrally on the back of said channel extending rearwardly therefrom including vertically disposed sleeve portion formed to telescope relatively freelyt'over a stake element whereby to admit of limited angular tiltingof said form supporting channel and a form carried thereby with respect to an axis normal to the axis of said stake, and manually operated means carried by said bracket, adapted to engage said stake, and removably fix the said form'supporting channel thereto at the desired elevation thereon and in the required angular relationship thereto governed by the selected positioning of said form.

2. In a form Setting device for accurately setting Wood sidewalkand driveway forms to the desired line and grade on stakes driven into the ground along side a-prepared grade with a portion of said stakes extending thereabove, said device comprising a generally transversely disposed form supporting channel including a back, a top flange having a depending outer lip and a lower flange formed with a longitudinal upwardly disposed continuous ridge along the center thereof, said channel being relatively rigid yet sufliciently resilient to permit said form to be removably secured between the flangesof said channel by hooking the upper portion of said form under the depending outer lip of said upper channel flange and forcing the bottom thereof in spring gripping engagement with the said ridge in the lower channel flange, and lever type clamp means carried by said form supporting channel extending rearwardly therefrom including a narrow clamping element engageable with said stake, removably fixing the said form supporting channel to a stake at any desired elevation thereon and at the desired angular relationship to the v longitudinal axis of said stake.

3. In a form setting device for accurately setting wood sidewalk and driveway forms to the desired line and grade on stakes driven into the ground alongside a prepared grade with a portion of said stakes extending thereabove,

said device comprising a generally transversely disposed form supporting channel including a back, a top flange having a depending outer lip and a lower flange formed with a longitudinal upwardly disposed continuous ridge along the center thereof, said channel being relatively rigid yet sufliciently resilient to permit said form to be removably secured between the flanges of said channel by hooking the upper portion of said form under the depending outer lip of said upper channel flange and forcing the bottom thereof in spring gripping engagement with the said ridge in the lower channel flange, the said form supporting channel including a central vertically disposed mounting sleeve extending rearwardly therefrom narrow cam-lock mounting bracket having spaced side walls and a rear wall, the said rear wall of said cam-lock mounting bracket having a slot therein, and a cam-lock including a cam and a cam-lock lever, the said'cam-lock being pivotably mounted between the side walls of said cam-lock mounting bracket with the cam-lock lever extending rearwardly therefrom for pivoting said cam to lock the form supporting channel to said stake in the required vertical and selected generally horizontal altitude with respect to the said stake and the said prepared grade, the said form supporting channel being provided with a central rectangular aperture therein to permit the said mounting sleeve to be telescoped therethrough, the said channel back being embossed on each side of the said aperture therethrough leaving a recessadjacent said aper- Y ture at the front of said channel back, the said mounting sleeve including laterally disposed flanges bearing on the front of said channel back within said recesses 4. In a form setting device for accurately setting wood sidewalk and driveway forms to the desired line and grade on stakes driven into the ground alongside a prepared grade with a portion of said stakes extending thereabove,

said device comprising means for supporting a form ineluding a vertically disposed backing member, a bracket mounted on saidform supportbacking member extending rearwardly therefrom including a vertically disposed sleeve portion formed to telescope relatively freely over a stake element whereby to admit of limited angular tilting of said form support and a form carried thereby with respect to an axis normal to the axis of said stake, and manually operated cam means carried by'said bracket adapted to engage said stake and removably fix the said form supporting channel thereto in at the desired elevation thereon and required angular relationship thereto,

governed by the selected location of said form.

References Cited in the file of this patent UNITED STATES PATENTS 1,497,962 Trester June 17, 1924 1,512,165 Funkhouser Oct. 21, 1924 1,595,844 Winter Aug. 10, 1926 2,643,839 Sislik June 30, 1953 2,676,679 Price Apr. 27, 1954 2,710,159 Gordon June 7, 1955 2,873,529 1959 Hogan et a1 Feb. 17,

Images