US2837842A - Curb and gutter grading machine - Google Patents

Description

June 10, 1958 A. w. JACKSON 2,837,842

' CURB AND GUT-'IER GRADING MACHINE Filed may 13, 1954 s Sheets-Sheet' 1 Andrew W. Jackson INVENTOR.

June 10, 1958 w, JACKSON 2,837,842

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A. w. JACKSON CURB AND GUTTER GRADING MACHINE 3 Sheets-Sheet 3 Andrew l6. Jac/rsbh IN V EN TOR.

United States Patent 2,837,842 CURB AND CUTTER GRADING MACHINE Andrew W. Jackson, Gadsden, Ala.

Application May 13, 1954, Serial No. 429,516

4 Claims. (Cl. 37-108) This invention relates to an apparatus for scarifying and grading ground within forms used in molding a curb and gutter, and has for its particular object the provision of means for finely grading the ground inside conventional metal forms for forming concrete curbs and gutters.

Another object of the invention resides in the provision of a machine which can be handled by either one or two men and can be utilized to successively scarify the ground and then grade it.

A further object of the invention resides in the provision of an apparatus which, while not only being especially adapted to both scarify the earth and then grade the ground within metal curb and gutter forms, is capable of accurately measuring the depthto which the ground has been graded.

The construction of this invention features a carriage which is adapted to be suspended from wheels which ride on the spaced forms for the curb and gutter which are of different heights. There is also provided means on the carriage which include other sets of wheels engaging the forms for minimizing any side thrust on the forms or twisting of the apparatus. Frames are hingedly attached to the carriage and support both a grading blade and scarifi'ers in a manner so that either one or two men may properly operate this apparatus.

Still further objects and features of this invention reside in the provision of a curb and gutter grading machine that is strong and durable, simple in construction and manufacture, which can be produced out of readily available materials at relatively low cost to permit wide dis tribution, and which eliminates a considerable expenditure of time and effort usually required in the casting of concrete curbs and gutters.

These, together with the various ancillary objects and features of the invention which will become apparent as the following description proceeds, are attained by this curb and gutter grading machine, a preferred embodiment of which has been illustrated in the accompanying drawings, by way of example only, wherein:

Figure l is a perspective view of the apparatus comprising the present invention;

Figure 2 is a top plan view of the curb and gutter grading machine;

Figure 3 is an enlarged vertical sectional view as taken along the plane of line 33 in Figure 2;

Figure 4 is a longitudinal vertical sectional view of the.

curbs and gutters. The forms 10 and 12 are adapted to be i spaced from each other at a given distance and are held in position by spikes 14 or the like driven into the ground.

The curb and gutter grading machine generally designated by reference numeral 16 and comprising the present invention is adapted to ride on the forms 10 and 12 and includes a carriage 18 of generally rectangular shape suspended from sets of wheels 20, 22 and 24, 26. These wheels are adapted to ride on the upper surface of the forms 10 and 12. The carriage 18 also has rotatably mounted thereon other sets of wheels 28, and 32, 34 adapted to engage the inner surfaces of the forms 10 and 12, respectively. Hingedly secured to the carriage 18 is an angle member 36 of a grading blade supporting frame 38, which frame includes outwardly projecting angle members 40 and 42 to which vertically extending standards 44 and 46 are welded or otherwise attached. The standards 44 and 46 are provided with elongated vertically extending slots 48 and 50 therein and are interconnected by an upper cross-member 52 for rigidity. There is pivotally secured to the carriage 18 a member 54 forming a portion of a scarifier supporting frame 56 which includes a pair of angularly upwardly extending members 58 and 60 to which vertically extending standards 62 and 64 are secured. The standards 62 and 64 are formed from angle iron and have elongated slots 66 and 68 therethrough. Secured to the frame 38 is a grading blade '70 by means of bars 72 and 74 which are apertured for reception of a bolt or other fastener, as at 76, which extends through a selected aperture 78 or 80 in the angle members 40 and 42. A link 82 is attached to the bar 72 and to the angle member 40, while another link 84 rigidities the connection between the bar 74 and the angle member 42. In this manner, the blade 70 is adjustably rigidly attached to the blade carrying frame 38 and thus pivotally mounted with respect to the carriage 18.

A cross-member 86 carrying scarifier blades 88 has a pair of bars 90 and 92 secured thereto, the scarifier blades being spaced from each other and adapted to cut into and dig up the ground between the forms 10 and 12. The bars 90 and 92 are connected to the angle members 58 and 60 by means of bolts, as at 94, which extend through aligned apertures of the series of apertures formed in both the bars 90 and 92 and in the angle members 58 and 60. Bracing members 96 and 98 are terminally connected to the bars 90 and 92 and .the angle members 58 and 60, respectively by bolts as at 95.

Hingedlyattached to a member 100 mounted on the angle member 36, are a pair of diverging handle members 102 and 104 forming asubstantially V-shaped handle 106. The handle members are interconnected by a cross-brace 108 which carries a pair of arms 110 and 112 provided with slots 114 and 116 therein. Bolts 118 and 120 extend through the .slots 48, 114 and 50, 116, respectively, to lock the arms 110 and 112 and hence the handle 10.6 in a selected position relative to the grading blade carrying frame 38.

Likewise, handle members 122 and 124 forming a handle 126, which are interconnected by a transverse member 128, are pivotally attached to the scarifier supporting frame .56 by a hinge connection. The transverse member 128 carries arms 130 and 132 which are slotted as at 134 .and 136 for reception of bolts 138 and 140 which are adapted to lock the handle 126 in an adjusted position.

Secured to the plate 108 is the threaded end 142 of a rod 144 to which one end ofa coil spring 146 is attached, the other end of the coil spring being attached to the carriage 18. Likewise, .a rod 148 is threadedly adjustably secured at one end to the transverse member 128 a rod 148 and at the other end thereof to the carriage 18.

This construction of the connection between the rod and the coil'spring can be best seen in Figure 5, where it will be noted that the end of the coil spring 150 is provided with a hook portion 152 adapted to be engaged within an eye 154 or like element attached to the rod 148. The other end of the coil spring is alfixed to a plate or portion of the carriage 18. The rod 148 slidably extends through the carriage 18.

The operation of this device is quite simple. First, the spring 146 is allowed to contract, thus raising the blade 70 above the surface of the ground. Then, moving the the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and acordingly, all suitable modifications and equivalents may ,be resorted to, falling within the scope of the appended claims.

What is claimed as new is as follows:

1. A curb and gutter scarifying and grading apparatus for use in conjunction with spaced forms for curb and gutter of different height comprising sets of wheels adapted to ride on the spaced forms, a car suspended from said wheels, other sets of Wheels mounted on said carriage engaging the inner surfaces of said forms, a scarifier carrying frame hingedly secured to said carriage, a blade carrying frame hingedly secured to said carriage, a first handle pivotally and adjustably secured to said scarifier carrying frame, a second handle pivotally and adjustably secured to said blade carrying frame, first resilient means terminally secured to said carriage and said first handle for urging the scarifier to a raised position and other resilient means terminally secured to said second handle and said carriage for urging the blade to a raised position, said scarifier carrying frame including a pair of upwardly extending standards, said standards having elongated vertically extending slots therein, a pair of arms carried by said first handle, said arms having elongated slots therein, and fasteners extending through said slots in said standards and through said slots in said arms for adjustably locking said first handle in a selected position.

2. A curb and gutter scari-fying and grading apparatus for use in conjunction with spaced forms for curb and gutter of different height comprising sets of wheels adapted to ride on the spaced forms, a carriage suspended from said wheels, other sets of wheels mounted on said carriage engaging the inner surfaces of said forms, a scarifier carrying frame hingedly secured to said carriage, a blade carrying frame hingedly secured to said carriage, a first handle pivotally and adjustably secured to said scarifier carrying frame, a second handle pivotally and adjustably secured to said blade carrying frame, first resilient means terminally secured to said carriage and said first handle for urging the scarifier to a raised position and other resilient means terminally secured to saidsecond handle and said carriage for urging the blade to a raised position, said scarifier carrying frame including a pair of upwardly extending standards, said standards having elongated vertically extending slots therein, a pair of arms carried by said first handle, said arms having elongated slots therein, and fasteners extending through said slots in said standards and through said slots in said arms for adjustably locking said first handle in a selected position, said first resilient means and said other resilient means including rods threadedly adjustably secured to said first handle and said second handle respectively, and coil springs concentrically disposed about said rods having the ends thereof terminally attached to said rods and said carriage.

3. A curb and gutter scarifying and grading apparatus for use in conjunction with spaced forms for curb and gutter of different height comprising sets of wheels adapted to ride on the spaced forms, a carriage suspended from said wheels, other sets of wheels mounted on said carriage engaging the inner surfaces of said forms, a scarifier carrying frame hingedly secured to said carriage, a blade carrying frame hingedly secured to said carriage, a first handle pivotally and adjustably secured to said scarifier carrying frame, a second handle pivotally and adjustably secured to said blade carrying frame, first resilient means terminally secured to said carriage and said first handle for urging the scarifier to a raised position and other resilient means terminally secured to said second handle and said carriage for urging the blade to a raised position, said scarifier carrying frame including a pair of upwardly extending standards, said standards having elongated vertically extending slots therein, a pair of arms carried by said first handle, said arms having elongated slots therein, and fasteners extending through said slots in said standards and through said slots in said arms for adjustably locking said first-handle in a selected position, scarifiers angularly adjustably secured to said scarifier carrying frame, and a grading blade angularly adjustably carried by said blade carrying frame.

4. A curb and gutter scarifying and grading apparatus for use in conjunction with spaced formsfor curb and gutter of different height comprising sets of wheels adapted to ride on the spaced forms, a carriage suspended from said wheels, other sets of wheels mounted on said carriage engaging the inner surfaces of said forms, a scarifier carrying frame hingedly secured to said carriage, a blade carrying frame hingedly secured to said carriage, a first handle pivotally and adjustably secured to said scarifier carrying frame, a second handle pivotally and adjustably secured to said blade carrying frame, first resilient means terminally secured to said carriage and said first handle for urging the scarifier to a raised position and other resilient means terminally secured to said second handle and said carriage for urging the blade to a raised position, said scarifier carrying frame including a pair of upwardly extending standards, said standards having elongated vertically extending slots therein, a pair of arms carried by said first handle, said arms having elongated slots therein, and fasteners extending through said slots in said standards and through said slots in said arms for adjustably locking said first handle in a selected position, scarifiers angularly adjustably secured to said scarifier carrying frame, and a grading blade angularly adjustably carried by said blade carrying frame, said first resilient means and said other resilient means including rods threadedly adjustably secured to said first handle and said second handle respectively, and coil springs concentrically disposed about said rods having the ends thereof terminally attached to said rods and said carriage.

References Cited in the file of this patent UNITED STATES PATENTS 1,630,991 Walstad May 31, 1927 1,829,622 Wilson Oct. 27, 1931 1,884,426 Ward Oct. 25, 1932 1,936,209 Reiland Nov. 21, 1933 2,036,598 Miller et a1. Apr. 7, 1936 2,321,615 Paulsen Mar. 6, 1945

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