US1798858A - Sectional pile - Google Patents

Description

E. WAT-u' 1,798,858

SECTIONAL PILE Filed July l4, 1928 3 Sheets-Sheet 1 wuc-Moz 13- WW LJ [konne-13.0

W, GJVV Mam.,

March 31, 1931. E. D. wATT SECTIONAL PILE Filed July 14, 1928 3 Sheets-Sheet 2 Mac 31, 1931. E, D, WAT-r lfigsg SECTIONAL PILE Filed July 14, 1928 3 Sheets-Sheet 5 arranged at a suitable distance from the end and held temporarily in position (by any suitable means, not shown) `to make the annular space 13 between the sleeve and the pile substantially uniform in radial width. If, as is usual, the pile has ,not been driven and iswlying on itsi side, both ends of the sleeve'are closed by any convenient means, as for example by wrapping Canvas or sacking, not shown, around the ends of the sleeve. The concrete is then poured in through the opening 14. The sleeve is thus solidly backed with concrete, which is in turn backed by the wood pile, so that the sleeve. is practically incapable of distortion or. deformation by stresses and pressures encountered in sub.-

i sequent driving, and at the same time the sleeve reinforces the concrete backing againstv cracking or shattering.

The wood section is' driven to the desired depth, leavlng the coupling collar at a suitable position above the ground, as-in Fig. 3.

for example, and the corrugated shell 15 for the upper section isV screwed down on the collar. This shell may be in one piece, or inV two or more Sections screwed one into the other, the shell shown being composed of two such Sections. It will be observed that the collar provides a shoulder 16'at its top, thus making a tenon 17 of the protruding end of' the wood pile. If desired `the lower portion of the steel sleeve may have a slight flare (not shown) to give a'tighter fit with the shell, vbut ordinarily it is not necessary since the shell and the sleeve can easily be made with a close enough fit, or, if not, the sleeve may be coated with .any suitable composition to make the'joint suificiently waterti ght if the pile is to be sunkin very' wet soil. Theassembly shown in Fig'. '3 isnow driven,

using a suitable coreV in the shell, as is customary' As the drivingproceeds the collar plows a hole for Vthe shell above, so that the latter is not compelledgto displace the soil and has to wit'hst-and only the driving friction resulting from inward movement `of the soil after thecollar has passed. Hencev the' liability of distortion of the shell is greatly. decreased, to suchV as yextent that` in 'upper end or tenon of the wood'pile and b'ears ony-the top of'the latter andlalso on the shoulder 16. Ifunder special conditions greater strength at the joint is desired ,the wood pile may be provided witha tenon of the usual kind, 'asV in Fig. V4,"fo'r example,

which shows a tenon 18 formed by turning'` by va conneet-ing sleeve 28.

screwed down on the collar 12, laving itsend,

well abovethe'collar, andintozthesleeve is inserted a tool having a head 20, which may be corrugated and which is hollow to accommodate the protruding end or tenon of the pile and .is Acarried by arms 21 depending from a handle or actuating member 22. The toolv is pushed latera'lly, thereby straightening up thev sleeve, as indicated, such effect being accompanied by compression or' crimping of the screw-thread corrugations on oneslde of' the coupling' sleeve 19 and expansion ofthe same on the'other.

itted to the sleeve.

`In the construction shown in Fi'g. '6 the corrugated reinforcing sleeve, as shown at 22a, is partially embedded in the concrete collar 23, which itselfextends above the top of the' wood pile toV form a socket and is provided with additional relnforcement, as rods 24 and rings 25. Theshel'l15 for the upper'sectionv is 'screwed to'the Vprotruding end of the sleeve;

In vdriving the shell: the core: (notV shown) fits down into the concrete-collar so ,as to drive on top of' the Wood pile. When the,

upper section is cast the concrete fillsthe.

'Socket in the' collar., foring a tenon, and:

may, of'conrse, have suitable .reinforcingv members, not shown, extending into the socket to give increased beamV strength at i The tool can now be., removed and the shell for 'the'vupper section have suitable holes-.or openings, not shown,

to bondthe-concrete on the inside and' outside together, 1f desired g The mven'tlon `mayalso beused for connecting twowood sections together, asin iFig-' forV example,` in which the. abutt'ing ends. of the sections,. dersignated 26, 27, are` providedwith collars and the bond is formed I-Ielical, orv screw-thread, corrugations are' preferred but they may be non-.helical, lin which case .the corrugated upper shell` may be split at its .lower end to admit the col'lar on the lower section, after which'the split port'ion' can be'boun'd with wine to hold it firmly on` the collar. rrIhis construction is illulstrated -in I'lig.` 8,''in7 which theshel'l29` i the wood is split at 30 and is tied on the collar, on the wood pile 10, by wires 31.

In some cases I may dispense With the sheet metal sleeve and provide the collar With internal reinforcement, as in Fig. 9 for example. In this figure the collar, designated by 32, is cast on the Wood pile 10 in a suitable form or mold, preferably corrugated, and is provided with longitudinal reinforcing barS 33 and reinforcing rings 34.

If the collar is not corrugated I prefer to give it a downward taper in order to afl'ord more secure connection with the Shell above. T hns in Fig. 10 the collar 36, which may have its reinforcement on the outside in the form of a sheet metal sleeve, or inside as in Fig. 6, is tapered downwardly and the lower end of the shell 37 is tapered to fit, with its edge bent under the collar. In this case the Wood pile, shown at 10, is shelled up before itl is driven, the shell being drawn up over it. The shell, or at least the upper portion of it, may be corrugated if desired.

It is to be understood that the invention is not limited to the specific constructions herein described hut may be carried out in other ways without departure from its spirit.

I claim` 1. A composite pile comprising a wood pile provided at its head end With a collar comprising a metal sleeve and a hacking of concrete between the sleeve and the pile to reinforce the same against lateral pressures, a sheet metal pile shell locked to the collar on pile, and a. filling of concrete in the shell.

2. A composite pile comprising a lower section of wood having at its upper encl a collar comprising a sheet metal sleeve formed With screw-threaded corrugations, and a filling of concrete cast between the sleeve and wood section, the concrete engaging the section to prevent longitudinal displacement of the collar; and an upper section comprising a Sheet metal pile shell screw-threaded on said collar, and a filling of concrete in the shell.

3. A composite pile comprising a lower wood section having at its upper end a caston reinforced concrete collar provided with external screw-thread corrugations, a connecting sleeve having like corrugations Screwed to the collar, a pile shell for the upper section having like corrugations screwed to the connecting sleeve, and a filling of concrete in the shell and bearing on the lower wood section. t i

4. A composite pile comprising a lower section of wood having at its upper end and below the top, a collar comprising a helically corrugated sheet metal sleeve and a cast-inplace filling of concrete between the sleeve and the wood, a helically corrugated sheet metal connecting sleeve screWed to the collar, a helically corrugated pile shell for the upper section screwed to the connecting sleeve, and

lower Wood section,

nal helical corrugations, screwing on the collar a connecting sleeve of helically corrugated sheet metal, screwingon the sleeve an upper pile shell of sheet metal having helical corrugations, and filling the shell with concrete in bearng contact With the lower section.

7. Method of (setting composite piles, comprising arranging around the head end of a lower pile section of wood a sheet metal sleeve providing an annular Space. between the sleeve and said pile section, filling the annular space with concrete` toV reinforce the sleeve against deformation by pressures or stresses encountered inthe ground,I driving the Wood i section, arrang'ing a pile shell above the Wood sectionand looking the shell to the collar thereon, driving the Wood section and shell into the ground, and filling the shell with concrete.

8. Method of setting composite piles com.- prising casting on a lower wood section at the upper end thereofa collar of reinforced concrete having external helical corrugations, screwingon the collar a helically corrugated sheet metal connecting sleeve, driving the lower wood section, screwing onthe conneoting sleeve an upperpile shell of helically corrugated sheet metal, driving the Wood pile farther to'carry the pile shell into the ground, and filling the Shell with concrete in bearing contact with the lower section. i i

9. Methodof setting composite piles comprising casting on alower wood Section at the upper end thereof a collar of renforced concrete having external helical corrugations, screwing on the collar a helically corrugated sheet metal connecting sleeve, bending the connecting sleeve laterally to setithe uppery end thereof invertical position, driving the screwing on the con- 4 necting sleeve an upper pile shell of helically corrugated sheet metal, driving the Wood pile farther to carry the pile shell into the ground, and filling the shell with concrete in bearing contact .with the lower section.

In testimony Whereof I hereto afix my signature.

ELIHU D. WATT.

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