US1848325A - Apparatus for the formation of concrete piles in situ - Google Patents

Description

J. M. DEALY March 8, 1932.

APPARATUS FOR THE FORMATION OF CONCRETE FILES IN SITU Filed June 3, 1929 INVEN TOR.

A TTORNEYS.

l6, tracted by the longitudinal movement ofa- Patented Mar. 8, 1932 JOHN M DEA Y, oF-AsT'oitIA, nnwvonx, AssIeNon TO MAc nTn R-concnE'rE-rmn CORPORATION, on new Yon-Inn. Y.,ACORP03 ATION.0F DELAWARE. I

'AIPPARATUS non THE nonunion or concnnrn r ms in sun Application filed June a, 1929. Serialli'o. 367,945.

more particularly, to apparatus comprising core leaves adaptedto be expanded and concenter-bar. 1 c V An object of the invention isto provide improved means for withdrawingthe leavesfof a collapsible coreitogether-with the centerbar; Another object: is to provide apparatus of the character, describedfwhich is'of simple and sturdy construction, and which operates freedom'from mechanical efliciently and with defects. i c u Other objects. of the invention willin part be. obvious and will in part appear hereinafter. t c

- The invention accordinglycomprises the features of. construction, combinations of el e-' ments, and arrangement. of parts, which w1l1- be exemplified in the constructions hereinafter set forth'andthescopeoff the applica-.

,tion of which will be indicated in the claims. a For a fuller understanding of the nature and objects ofthe invention, reference should be had to the following detailed description taken in connection withthe accompanying drawings, in which:

Figure 1 is a longitudinal section] of a collapsible core embodying the invention, showing the same inserted in apile casing, a longi-.-

tudinal'portion of the core being broken y ,7

Fig. 2is an enlargeddetail sectional view.

of thecorehead, showing the parts in driving position ;,p

Fig. 3 is a similarviewflhowing the parts in withdrawing position;

I Fig. 1 is, a. detail, showing me(*ims as viewed from the right of Fig-'2;

Fig. 5 is a plan view of the core. 2 p I Theexemplifiedapparatus comprises a collapsible core, indicated generally at 10, of a type suitableto be sunk i'nto the ground either alonegor insconjunction witha thin sheet metal or similar; shell, such as shown at 11,;to form a cavity 'intowhich concrete may 5 be poured for the formation of a concrete pile or the like.v The exemplified core comthe connecting element 25 projectingfrom one of thecore prises a center-bar 12 and a plurality core leaves..13 separated longitudinally so asto permit the-same to be expanded against the inner surface .Ofthe shell {during driving, s

ing-cap and the coreleavesthere is inter-i i posed a drivingeplate 19, which .ismounted on the core leaves, by means ofpins 20, me.

manner to permit. radial movement .of the leaves. In the present instance, the drivingplate is provided withan external downwardly-extending flange 21 adapted to limit the expanding movement-of the core leaves;

' The invention contemplates the'p rovision' of means forconnectmg the drIvmg-cap and the core leaves in such manner as 'to nsurethe withdrawal of the core leaves with the driving-cap and center-bar after the latter elements have moved upwardly a suflicient distance to permit the collapse of theleaves.

To this end, there'is provided in the exemplified apparatusa series ofpairs of. pivot-- ally-connected links 22 and 23, each link 22.

- being pivotally mounted on an element 24 projecting from the driving-cap, and each link 23 being pivotally connected with an leaves. The driving-plate 19 is'formedrwith suitable recesses 26, into which thelinks'22 and23 seat when these links are aligned by the upward movement-of the driving-cap By the provisionof such means, the with v drawal of'the core leaves after the driving:

cap and center-bar have .move'd'iup a'given distance is assured, the links 22 and .23 3 car ryingthe weight ofithe corei leaves during, the withdrawal of. the core from theground These links, being exteriorly mounted, can,

above description or shown in the accom- I panying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be Imderstood that the fol-v lowing claims are intended to cover all of the generic and specific features of the invention hereindescribed, and all statements of the scope of the invention which as a matter of language might be said to fall therebetween.

I. Pile-driving apparatus, comprising a center bar, a plurality of core leaves about saidv center bar, means for causing the col lapse of saidcore leaves, means to cause the expansion of said core" leaves, a driving cap carried. at the upper end of said center bar,

and means connecting the upper end of each core leaf with said driving cap andindependent of said collapsing means for sup.- porting each core leaf from the driving cap when in collapsed position, said meansbeing collapsible to permit a limited longitudinal movement of the core leaves with respect to the center bar,

2. Pile driving apparatus, comprising a center bar, core leaves coll'a'psibly associated with the center bar, a driving cap secured to the: upper end of said center bar, and a plurality of pairs of pivotally connected links, one of each pair of said links being pivotally connected with said driving cap,

' and another of each pair of said linksbeingpivotally connected with one of said core leaves, said links being so arranged that when the same are in extended position theywill support the core leaves in collapsed positiom I 3'. Pile driving apparatus, comprising a center bar, core leaves collapsibly. associated with the center bar, exteriorly mounted collapsible suspension means, and means to connect said suspension means with said center but and with said core leaves.

4'. Pile driving apparatus, comprising a:

center bar, core leaves collapsibly associated with the center" bar, means at the upper end of, the centerbar f-or applying thereto driving pressure and withdrawing pull, and collapsible elements attached to each core leaf at the outside thereof and connected with the upper end of said bar for suspending said core leaves'from said center bar.

5. Pile driving apparatus, comprising. a center bar, core leaves collapsibly associated with the center bar, a driving cap secured to the. upperend of said center bar, sus-' pension means attached to the core leaves at the outside thereof, and means on said driving cap for supporting said suspension means.

6. Pile driving apparatus, comprising a center bar, core leaves collapsibly associated with the center bar, a driving cap secured to the upper end of said center her, an outwardly extending element on each of the core leaves, outwardly extending elements on the driving-cap overhanging the aforesaid ek ments, and collapsible suspension means connecting each pair of said outwardly extending elements.

7. Pile driving apparatus, comprising a center bar, core leaves collapsibly associated with the center bar, a driving cap attached to the upper end of the center bar, a driving plate fitting between said center bar and said core leaves, said driving plate bei'ng formed with recesses in its outer surface, and means to connect said driving cap with saidfcore leaves, said connecting means being arranged to permit inward and outward movement of the core leaves, and being adapted to fit into said recesses. 1

8. Pile driving, apparatus, comprising a center bar, core leaves colla sibly associated with the center bar, a driving cap attached to the upper end of the center bar, a driving plate fitting between said center bar and said core leaves, said ,driving plate bein center bar carrying Iongitudina y-spacedwedging members, a driving cap attached to the upper end of the center bar, a plurality of core leaves surrounding said center bar and formed with wedging members adapted. to co-operate' with the aforesaid wedging members, means to effect the collapse of said core leaves when said cent'erbar is moved longitudinally, and means independentof. said colla sing meansfor connecting said driving ca with said core leaves and adapted to permit a limited longitudinal movement between the two, said connecting means being adated to support said core leaves from said cap, whereby supporting strain on the collapsing means is avoided.

In testimony whereof I afiix my signature.

JOHN. M. DEALY.

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