US2186364A

US2186364A - Method of and means for installing subdrain pipe

Info

Publication number: US2186364A
Application number: US280330A
Authority: US
Inventors: Firman L Carswell; Otto W Schmidt
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-06-21
Filing date: 1939-06-21
Publication date: 1940-01-09
Anticipated expiration: 1957-01-09

Description

n 9, 194 F. L. CARSWELL ET AL 2,186,364

METHOD OF AND MEANS FOR INSTALLING SUBDRAIN PIPE Filed Juhe 21. 1939 2 Sheets-Sheet l Fly. 7.

- INVENTORS.

Erma/7 A. 64/5/ 6/4 BY 0770 M 5677/77/17? Jan. 9, 1940. F, CARSWELL El AL 2,185,364

. METHQD OF AND MEANS FOR INSTALLING SUBDRAIN PIPE INVENTORL 7 57 /7740 A Oarsn e/A l f2 07 7? M4 56/7/77/47? ATTORNEYS.

' Patented Jan. 9, 1940 mn 'rnon' OF Firman L. Oarswcll, Johnson County, Kans, and

Otto W. Schmidt,

Application June 21, 1

. '10. Claims.

This, invention relates to the method of and means for installing subdrain pipesj and par ticularly for installing drain pipe beneath roadways, railroads, etc., where it is importantthat the drain pipe be encased ina per'viousmaterial.

In the maintenanceof. paved roadways, railroad beds, etc., it is very important to keep the sub-grades free from the accumulation of excessive water1which might materially lend to the. rapid destruction of the superstructure. Fast moving, heavy traffic passing over the roadway or railroad soon causes .abr'eaking down i. of the superstructure above thewater; pocket,

thereby necessitating expensive repairs.

; Drainage tubes have been used to drain EX? 'cessive water beneath the roadways, etc., but in view of the fact' that it is deemed advisable to encase the drainage tubeina pervious' mate-'- rial, such as crushed rock, to maintain the open} ings to the tube in proper condition. andto support the road loads, it has" been found necessary to, cutaway and replace the surfacing material during the placement of the drainage tubes. Due to the fact that this operation is very expensive and interferes with the use of the roadway during the repair work, it has not been deemed advisable in many instances- The principalobject of,thefpresent invention is the provision of a method whereby drain pipecan be easily and quickly'encased'in a pervious material beneatharoadsurfacing materialwith- I out disturbing the surfacing material of the. road and without interfering with the trafiic thereover.

A further object of this invention is the pro vision of a device for encasing, a drain pipe in a perviousmaterial, including said drain pipe asapart of saidmeansll f,

Other objects will appear during the course of the specification, wherein reference is had to the drawings in which:

Figure, 1 is a perspectiVevieW of a tamping, tool used in carrying out-the method. 1 of this invention. I Fig. 2,is aperspective view of the trough and drainage tube in operative relation. v

Fig. 3 is an enlarged ,sectional ,view, of the equipment in position, taken 'on line III-III of Fig. 10. H v

' Fig. 4 is'an enlarged crosssectiona on line IV-IV"of1Fig. 2.v Q

l view taken Fig. 5 is a longitudinal; sectional'zview oil a s pa ally p tioned on the dra n series of trough pipe.

Kansas City, Mo.

939, Serial No.1 280,330

' Fig filis asidevelevatio of the tamping tool.

Fig. "I'isa plan view of the tampingtool'.

Fig. 8 is a plan View of a paved roadway, showing the positioning of drainage tubesjthereunderg Fig. 9is ajsectionalviewof a paved roadway showing a. hole bored in the sub-structure with the drain pipe positioned therein.

FigglO "is asectional view similarfto that shownin Fig. 9, with thetroughs and tamper in position." v u 10 a Fig. 11} is a sectional.. view of the roadway showing the drainage tube installed.

Fig. 12 is a modified form showing "a specially constructed trough, having means whereby ity is secured for longitudinal movement on a round drain tube;.and, l

Fig. 13" is a fragmentary elevatio the parts as shown in Fig; 12. l I v H Throughout theise'veral ;.views, like :reference :characters designate similar parts'and the numeral 20 isa'drain pipe'of semi-circular form having flanges 22,; and "drainage openings1.2 4 beneath the corrugated-top-26Q This i-drainage pipe is suitable for (positioning-fin the sub-soil for draining surplus water therefromgand when properly embedded in crushed rock, it wil'l support heavy loadsof trafiic on the paved surface. A sectional .trough'28 jconsist s' of'aseries of .tr'ough'units 30' joined tog'ether'by- U-shaped members' ,32 which are secured to adjacent abut ting trough units, by means of bolts '34 passing throughholes 36. Anydesirable length of trough '28 maybe hadbyrjoining together the proper nalf view of numberjof units 30. v

Each trough unitisprovided with an inwardly turned angle iron, 38 which, extends below the bottom "of the trough a sufficient distance to forma groove 40 suitable to receive the flanges 22 0f the.drainage pipe, thus making it possible to' secure the trough to the 'drainage tube' iofr. f

longitudinal movementtherealong. i Atamping tool 42 comprises a head 44 having asectional handle 46,- by means'oi whichgthe head.is moved lengthwise of saidtroug'h to po' ,sition a perviousmater-ial, such as; chat,v as 3.

refill j about thedrainage pipe,as hereinafter 'set I' .forth. v V

*The. tamper-head 44- is substantiallythe fruslower-lip 48 whichis adapted to ,reston the ,bott'omof the trough 28, during the tamping' operation. The enlarged end of thehead ispro; yid'edwith a top extension 50 which functions to move the pervious material to the drainage pipe.

tum ofQa pyramid with a forwardly projectings y v position about any length or position to meet sections 41 may be removed as the tamping operation proceeds and the length of the hole is reduced. v

Referring to Figs. 12 and 13, it will be noted vthattrough 28 is shown mounted on a round drainage pipe 52. It-will also be noted'that the trough-is provided with downwardly converging ,members that serve to engage the walls of the drain pipe below the center line thereof, thusprecluding transverse separation of the joined parts. The upper edges of trough 28 are-shown rolled as at 54.

Referring now to the method of installing subdrain pipe, reference will be had to Figs/8, '9, 10 and 11.

Fig. l is a plan view of a highway having a sectional slab surface with the usualtransverse, expansion iointsBZ ,and shoulders -84. The dotted lines indicate atypical installation of the subdrainage pipe. I

The 'flrststep in the procedure is to .form a trench across the shoulder 64 atright angles to the roadway or whatever angle is desired. for positioning the drainage tube. The secondstep is the forming of a hole beneaththepaving at an outwardly and downwardly inclined. angle, sufficient to properly drain the pipe. This hole is made of much greaterv cross. sectional area than that of the drainage pipe, to beused so as to permit of a sufficient amount of refill material to surround the drainage pipe. Any earth be tween the top of the'bored holeand the bottom surface of the paving is broken down and raked fromthe hole. In some instances the circular, bored'hole will be used without the removal of any dirt from the top thereof.

The hole is usually bored to extend to orbeyon-d the center'line of the roadway, but maybe of the particular drainage problem.

The drainage pipe is now positioned in the hole and care is taken to see that'it has an even bearing throughout itslength. The trough Z8 is now slid to position overthe drainage tube, ,with

its end'positioned a short. distance from the inner end of the drainage pipe. A small quantity of pervious material, such as crushed rock, is now shoveled into the protruding endportion of the,

trough 28,,andis rammed to the back of thehole or tunnel by means of the tamping tool 42.

When the inner end of the holeis tamped full, the trough is slipped outwardlyto permit :the positioning of more crushed rock without embedding the end of the trough therein. This operation is repeated until the tunnel is completely filled and the drainage pipe beneath the paving is completely encased in the pervious material. v I

. The last step, is the laying of the line of'pipe 10 across the shoulder to the road-sideditchlZ, and the refilling of ditch 66. During the progress of the tunnel refilling operation, sections of the'trough 28 and tool handle 42 may be-removed. 7

It is apparent that this method of positioning a drainage pipe, properly encased in a shield of pervious material within a tunnel formed beneath a'pavement, provides an extremely rapid and-economical method of installation with the removalof a minimum amount of 'theroad'bed material, and without'interfering with the usual traflic over the'roadway. 5

Having thus described the invention, what is claimed as'new and desired to be secured by Letters Patent is:

p 1. Means for installing a subdrain pipe in a tunnel comprising a drainage pipe; a trough slidably secured to said drainage pipe positioned in said tunnel; and a tamping tool operable within said trough whereby a pervious material is tamped in said tunnel about said drainage pipe.

2. Means for installing a subdrain pipe in a tunnel comprising a drainage pipe adapted to be positioned in said tunnel; a trough secured to said .drainagepipe for relative longitudinal move- :mentwtherealong; and a tamping tool operable in said trough whereby pervious material deposited in the trough ispositioned to encase said drainage pipe in said channel.

3.,Means:forinstalling a subdrain pipe in a casing of pervious material within a tunnel, comprising a drainage pipe adapted to be positioned withinsaid tunnel; a sectional trough secured to said drainage tube ,for relative longitudinal movement thereon; and a tamping tool operable .insaid trough to moveperviousmaterial deposited in the trough outside said tunnel to a position within said tunnel and about said drainage pipe.

4. Means for installing asubdrain pipe in a casing of pervious material within a tunnel comprising .a drainage pipe having outwardly extending top flanges and adapted to be positioned in'said tunnel; a sectional trough having grooves formed in the bottom portion thereof to receive the drain pipe flanges whereby the trough is secured for longitudinalrelative movement thereon; and a tamping tool adapted to bereciprocated in said trough to delivera pervious material to the end thereof and tamp it about said drain pipe.

.5. Means for installing a subdrain pipe in a casing of pervious material within a tunnel comprising a drainage pipe having outwardly extending top flanges and adapted to be positioned in said tunnel: a sectional trough having grooves formed in the'bottom portion thereof to receive the drain pipe flanges whereby the trough is secured for longitudinal relative movement thereon; and a tamping tool having a forwardly projecting lowerlip adapted to be reciprocated in said trough to cause a pervious material, delivered to said trough, to bemoved. to a position about said drainage pipe.

6. The method of encasing a drainage pipe in a coating of ,pervious material within a tunnel,

"comprising inserting'said drainage pipe into said 'tion of said trough extended outside said tunnel;

introducing a quantity of pervious material into 'saidtrough; reciprocating a tamping tool in said trough to move said pervious material to a tamped position about that portion of thedrainage pipe beyond said trough; moving the trough to a distance outwardly along said drainage pipe and again tamping pervious material about said drainage tube; continuing this operation until the portions of the drainage tube within the tunnel is encased in said pervious material.

7. The method of encasing a. drainage pipe in a coating of pervious material within a tunnel comprising inserting said drainage pipe into said tunnel; positioning a trough for longitudinal movement on said drainage pipe with the inner end thereof spaced apart from the inner end of .Qui

portion of the drainage tube within the tunnel is said drainage tube and with the outer end portion of said trough extended outside said tunnel;in-

troducing a quantity of pervious material into said trough; reciprocating a tamping tool in said trough to move said pervious material to a tamped position about that portion of the drainage pipe'beyond said trough; repeating this operation until that portion of the drainage-tube beyond the trough is encased in the pervious material; moving the trough outwardly along said drainage pipe a short distance and again repeating the operation of tamping pervious material about that portion of the drainage tube between the trough and the pervious material .previously tamped; then continuing these trough moving and tamping operations until the tunnel is completely filled.

8. The method of encasing a drainage pipe in a coating of pervious material within a tunnel comprising inserting said drainage pipe into said 4 tunnel with a portion thereof positioned outside introducing a quantity of pervious material into said trough; reciprocating a tamping tool in said trough to move said pervious material to a tamped position about that portion of the drainage pipe beyond said trough; moving the trough a distance outwardly along said drainage pipe and again tamping pervious material about said drainage tube; continuing this operation untilthe encased in said pervious material,

9. The method of encasing a drainage pipe in a coating of pervious material within a'tunnel comprising inserting said drainage pipe in said tunnel; mounting a trough in said tunnel with its inner end portion spaced outwardly from the inner end of said drainage pipe delivering apervious material along said trough to encase that portion of the drainage pipe beyond said trough;

movingwsaid trough outwardly a-short distance and again delivering pervious material to encase another section of the'drainage pipe; and con tinuing the outward adjustment of the trough and the delivery of materialitherethrough until the drainage pipe within the tunnel is complete:-

ly encased in pervious material.

10- The methodof encasing a drainage pipe in a coating of pervious material \mthin a tunnel comprising inserting said drainage pipe in said tunnel; mounting a trough in" said tunnel with its inner end portion spaced outwardly from the inner endof said drainage pipe delivering a pervious material along said trough and tamping the same to encase that portion of the drainage pipe beyond said trough; moving said trough outwardly a short distance and again delivering and tamping pervious material to encase another section of the drainage pipe; and continuing the outward adjustment of the trough and the delivery of material therethrough. and tamping the same until the drainage pipe within the tunnel is completely encased in ,perviousmaterial.

' 'FIRMAN L. CARSWELL.

OTTO W. SCHMIDT.