Drain line and method of installing

Claim 2

In a method of installing drain lines in a field by excavating a trench, placing in the trench a plurality of drain tiles each of determinate length, and backfilling the trench, an improvement which more positively aligns the drain tiles and maintains such alignment against shifting soil and comprising the steps of enclosing the drain tiles being placed in the trench with an elastic, permeable, tubular knit fabric sleeve having a length substantially greater than the combined length of a plurality of the drain tiles, and forcibly aligning adjacent drain tiles in the trench and thereafter maintaining such drain tiles in alignment by means of the elasticity of the enclosing sleeve.

Claim 3

A method according to claim 1 wherein the steps of excavating a trench and placing drain tiles therein comprise traversing the field with a ditching machine having a digging apparatus and a tile placing chute and further wherein the step of enclosing the drain tiles comprises inserting the drain tiles into the sleeve while directing the drain tiles along the chute.

Claim 4

A method according to claim 1 wherein the step of enclosing the drain tiles comprises shirring the sleeve onto a tubular support having an inside diameter greater than the outside diameter of the drain tiles and passing the drain tiles through the support and into the sleeve.

Claim 5

A method according to claim 1 further comprising the steps of spacing adjacent enclosed drain tiles one from another, accommodating liquid flow into the drain line defined by the spaced tiles through the sleeve and the interstices between the spaced tiles, and blocking with the sleeve the entry of soil particles into the drain line.

Claim 6

In a method of installing in a field drain lines defined by a plurality of hard drain tiles each of determinate length by traversing the field with a ditching machine having a digging apparatus and a tile placing chute, excavating a trench, and directing the tiles down the chute into position in the trench, an improvement which more positively aligns the drain tiles and maintains such alignment against shifting soil and comprising the steps of shirring an elastic, permeable, tubular knit fabric sleeve having a length substantially greater than the combined length of a plurality of the drain tiles onto a tubular support having an inside diameter greater than the outside diameter of the drain tiles; positioning the support for passage of drain tiles therethrough upon the drain tiles being directed into the trench; enclosing the drain tiles being directed into the trench in the sleeve while passing the drain tiles through the support; and forcibly aligning adjacent drain tiles in the trench and thereafter maintaining such drain tiles in alignment by means of the elasticity of the enclosing sleeve.

Claim 7

In a method of installing in a field drain lines defined by a plurality of hard drain tiles each of determinate length by traversing the field with a ditching machine having a digging apparatus and a tile placing chute, excavating a trench, and directing the tiles down the chute into position in the trench, an improvement which more positively aligns the drain tiles and maintains such alignment against shifting soil and comprising the steps of shirring an elastic, permeable, tubular knit fabric sleeve having a length substantially greater than the combined length of a plurality of the drain tiles onto a tubular support having an inside diameter greater than the outside diameter of the drain tiles; positioning the support for passage of drain tiles therethrough upon the drain tiles being directed into the trench; enclosing the drain tiles being directed into the trench in the sleeve while passing the drain tiles through the support; and forcibly aligning adjacent drain tiles in the trench and thereafter maintaining such drain tiles in alignment by means of the elasticity of the enclosing sleeve.