US1285864A - Form for casting reinforced-concrete piles. - Google Patents

Description

J. E. WILHELM.

FORM FOR CASTING REINFORCED CONCRETE FILES.

APPLICATION FILED MAR-30. ms.

1,285,864. v Patented Nov. 26, 1918.

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FIG I ATTY m: mulls run: ca. monunua. msmuanm. n cy J. E. 'WILHELM.

FORM FOR CASTING REINFORCED CONCRETE FILES.

' APPLICATION FILED MAR. 30. IBIS.

1 ,285,86--L Patented Nov. 26, 1918.

3 SHEETS-SHEET 2- //v VENTOR y m E Afi QW, Bp m/I w 73 ATT)" J. E. WILHELM. roam FOR CASTING REINFORCED CONCRETE mes.

APPLICATION FILED MAR. 30, l9l6. 1,285,864.

Patented Nov. 26, 1918.

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UNITED sTATEs PATENT oEEic.

JEssE E. WILH LM, E CLEVELAND, onio, .assienon To TH GREAT AKEs DREDGE & DOCK COMPANY, OF CHICAGO, ILLINOIS,-.A- CORPORATION OF NEW JERSEY.

FORM Eon casr ue n INi oRcEn-concnErE riLEsf T 0 all whom it may concern;

Be it known that I, JEssE E. WILHELM, a

citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Forms for Casting Reinforced-ConcretePiles, of which the following is a fulh clear, and exact description, reference being bad to the accompanying drawings.

This invention relates to concrete. piles having laterally extending interlocking de vices. Such a pile. is'shown, described and claimed in my prior application, Serial No.

59,386, filed November 3,1915, and of which this application is a division. The general object of the invention is to provide-a simple efficient and comparatively inexpensive moldin which the pile may be cast, providing for the most convenient assembling of a pile with the interlocking members.

The pile producedby .my process. comprises a concretebody cast about asuitable reinforcing skeleton, and preferably having a longitudinal opening along the axisof the pile. The interlocking device preferably comprises laterally projecting metal wings each adapted to coact with a corresponding member on the next adjacent pile, these wings seating in longitudinal grooves in the body of the pile and being secured in position by members extending transversely around the exterior of the pile. These latter members are preferably carried in grooves sothat they may not interfere with driving the pile. Y Y i In carrying out myinvention the pile is cast in a mold comprising two or more longitudinal separable sections having transverse inwardly extending ribs or projections adapted to form transverse grooves around the perimeter of the pile. These grooves are preferably spaced apart and extend substantially half way around the pile and those extending in one direction" are offset or intermediately positioned with relation to those extending in the other direction.

These transverse grooves meet oppositely positioned grooves extending preferably throughout the length of the pile and which are formed when the pile is cast. Theinterlocking members have one edge adapted Specification of Letters Patent.

PatentedNov. 26, 1918'.

this application filed March 30,

ed to seat" in the longitudinal grooves and are preferably provided with a series of openings registeringwith the transverse "grooves. a-llods lying in these grooves have their ends projecting through the openings in the interlocking members and "nuts on the ends of these rods mayact to effectively hold the interlocking members in place.

The" longitudinali'opening along the axis of the pile may be formed'by atubular casing or pipe firmly cast-into the pile and forming part" of thesame; or. this opening may be formed by acollapsible core which is withdrawn after the concrete forming the to coact with aninterlocking device on the v adjacent pileandhave the other edge. adaptpile is set-MIn either instance the core or the tubular member is positioned with relation to the pile by suitable ties extending aroundt-he core or pipe'and secured to vathe lower end of the pile. j

The mold is provided with inwardly extending ribs corresponding to the longitudinal and transverse ribs of the pile assembled about a reinforcing skeleton; one end of the mold is-closed by a suitable driving point for the pile; the concrete is then poured into the mold; after the concrete is set the mold is removed; the interlocking members are seated in the longitudinal grooves; and the transversesecuring members are then placed in position in the grooves with their ends engaging the interlocking members "and are suitably secured thereto. The pile is preferably provided with a longitudinal passage extending axially throughout the length of the pile, and this passage may be formed either by casting a suitable tube into the pile which may form apart of the same when the concrete is set,'or may be formed by a collapsible' core adapted to be removed vafter the concrete is set. The longitudinal passage thus formed, provides for conveniently suitable driving point may "be provided at after the pile is in position by operating a drill through the longitudinal opening and then dropping through this opening to the lower end of the pile a suitable post or anchor member adapted to extend into the rock and upwardly into the pile. This opening may also be used for jetting the pile by forcing water downwardly through the same.

The drawings illustrate one form of pile which may be constructed by my forming devices and also show the collapsible core which may be used in its construction. I will now describe my invention particularly with reference to such drawings.

Figure 1 is a side elevation of two piles. showing the interlocking and anchoring features; Fig. 2 is a plan of one of the piles showing the interlocking members secured in position; Fig. 3 is a horizontal section showing a portion of the reinforcing means and the means for holding the core, for the longitudinal passage, in position; Fig. i is a transverse section through a mold showing the reinforcing structure and axial core in position ready for casting the pile; Fig. 5 is a longitudinal sectional detail of the mold shown in Fig. f taken on a smaller scale; Fig. 6 is a longitudinal sectional detail showing the members for forming the longitudinal and transverse grooves of the pile, the section being taken along a joint of the mold; Fig. '7 is a detail of one of the transverse members for securing the interlocking devices in position; Fig. 8 is a somewhat diagrammatic view showing the method of forming the axial opening through the pile by means of a collapsible core; Fig. 9 is an end elevation of such collapsible core; and Fig. 10 is a perspective of the member for forming the longitudinal groove and the recesses at each side thereof.

Referring to the drawings by numerals, the concrete pile 1 is preferably of an octagonal form made conical-shaped at its lower end, as indicated at 2'. and provided with a metal cap 3 secured to the concrete and adapted to prevent the crushing of the point of the pile while it is being driven.

The interior of my concrete pile "is preferably reinforced by a steel structure similar to the usual construction. As shown this reinforcing skeleton comprises a plurality of spaced apart longitudinal rods 5 preferably extending substantially throughout the h of the pile. These rods are relatively positioned and spaced with relation to each other by encircling rods 6. which are shown as looping around each of the vertical rods 5. These encircling rods may be provided in any desired number and arranged at separated points throughout the length of the pile.

The form of the interlocking feature of the pile shown in the drawings will now be described. In casting the pile the concrete is formed with diagonally opposite grooves 10 shown at corners of the octagonal. surface and extending throughout the length of the pile. Grooves 12 extend transversely around the outside of the pile from one groove 10 to the other and these grooves 12 are suitably spaced apart and extend in alternately opposite directions about the pile. Opposite the points where the ends of. the grooves 12 meet the grooves 10, are provided recesses 13 as shown in Figs. 2 and These longitudinal and transverse grooves receive the metal wings and the means for holding them inposition whereby one pile may be interlocked with and braced by the next adjacent pile to form a substantially tight wall having great durability and strength.

At 15 are indicated interlocking members having one edge adapted to seat in the longitudinal grooves 12, the opposite edge being provided with a recess 16 and a tongue pon tionl7 adapted to fit in the corresponding recess of the interlocking member on the next adjacent pile, after the manner of the usual form of'interlocking steel sheeting. These interlocking members are provided with a series of openings which may stand opposite the ends of the grooves 12 when in position and receive the threaded ends of securing rods 20. The ends of these securing members 20 are adapted to receive nuts 21 which occupy the recesses 13 and it may be tightened to clamp the interlocking members securely in position.

It will be seen that with a series of the members 20 extending alternately in opposite directions around the exterior of the pile and through the interlocking members the nuts 21 being tightened in position. that the interlocking members will be very rig idly and permanently secured to the pile. The securing members 20 are preferably round rods bent to fit the grooves 12 and lie entirely within the same. and it should be noted that when in position they do not interfere with the driving of the pile. These securing members not only serve to hold the interlocking members against longitudinal or lateral displacement. but. they materially add to the strength of the pile.

When the interlocking members are assenr bled on the body of the pile. as described, the piles may be driven side by side with the interlocking members in engagement. The permanency of the concrete, strengthened by the interlocking members. not only provides a strong rigid wall. but the interlocking devices so connect the piles that the wall is substantially water-tight. Whenever it is desirable, the lower ends of the pile may be anchored to rock or other hard strata indicated at 25 in Fig. 1. by drilling downwardly into the rock through the longitudinal passage 26 and then dropping through this opening a suitable post 27 adapted; to

substantially fit the drilled hole in the rock been provided on piles of this character by securing them to membersof the reinforcing skeleton and then surrounding the skeleton and the interlocking members with a mold or casting. ,Great difficulties are encountered in securing such rein forcing members to the skeleton and the handling is made awkward. The greatest difiiculty, however, is in making a mold which will fit the exterior of the reinforcing membersclose enough to prevent leakage of the concrete and still permit the mold members to be conveniently placed in position and readily removed. The reason for this latter difliculty is that the reinforcing skele- 4 tons become bent and warped from stacking them after being built, the distance between the interlocking wings is altered, and they no longer fit the portion of the mold designed to be complementary thereto.

In casting my pile I prefer to use an octagonal mold divided at diametrically opposite points thereby comprising two half mold members 30 and 31 adapted to be secured together by suitable angle bars as indicated at 32 in Fig. 4. These angle bars may be secured together for casting by readily removable bolts, clamps or other devices. At one end of the mold may be provided any suitable means (not shown) for holding the cap 3 in position during the casting of the pile. The grooves 12 are formed by inwardly extending transverse ribs 36 carried by the mold. Portions 38, in the nature of enlargements of the ribs 36, at their opposite ends are adapted to stand against and be rigid with inwardly projecting longitudinal ribs 40 which form the longitudinal grooves 10 in the pile. The detail in Fig. 6 indicates the shape of the ribs 36 which extend through notches in the longitudinal ribs 10 and abut the members 38. The longitudinal ribs A0 are preferably positioned by the mold members 30 and 31 being held against shifting by the ribs 36 extending into the notches 39 (Fig. 10) and abutting the members '38. These members or heads 38 stand alternately on opposite sides of the ribs 40 and form the cavities 13 in the proper positions in the pile. After casting the pile, the mold members 30 and 31 are first removed, leaving the ribs 40 free to be withdrawn radially carrying with them the members 38.

The sectional view in Fig. t shows the re inforcing structure and core in position in the mold. The core is shown as held in place by tie rods 42 which preferably loop at their ends around diametrically opposite rods 5.

One of these tie rods 42 preferably extends around one side of the-coreand then several feet along the mold. another tie member extends around the opposite side of the mold and is attached tothe same vertical rods 5.

Still farther along other of these tie members similarly arranged,-may extend from others of the vertical rods 5, thus positioning the core'while leaving as much open space as possible to permit the free flowing-ofconcrete into the mold.

tioned in the mold in any suitable manner. As a convement means I have shown loops at which may be formed at the endotsome of the tie-,rods' a2, and project outwardly past the rods 5 engaged thereby, and extend shown. Thus, the reinforcing skeleton for r The reinforcing skeleton may be ,posi- .into and engage corners of the mold as V the pile and the collapsible core or tube for forming thelongitudinal passage are centrally positioned while the concrete is poured into the mold.

A convenient form of collapsible core for the longitudinal opening of the pile is illustrated in Figs. 8 and 9 and is shown as comprising three members 50, 51 and 52 adapted to extend throughout the length of the pile and constructed to nest together as indicated in Fig. 9, to form a substantially cylindrical core. It will be noted that each of the members comprising the core has a peripheral area of less than half of the circumference of the core and the member 50 has two surfaces 53 and 54 which taper toward the center as they approach one end ofthe pile.

In operation, the core is nested in its proper form within the reinforcing structure and its lower end is positioned against a suitable cap point or plug 57 adapted to close the lower end of the cap member 3. The pile body is then cast about the core within the mold, and after the concrete has hardened or set, the separate members of the core may be withdrawn longitudinally. At 58 are indicated suitable eyes by which a suitable pulling device may be attached to these several members. The member 50 is first withdrawn longitudinally upwardly as shown in Fig. 8, and it will be noted that upon first upward movement this member will become loosened and withdrawn freely. The member 16 will then be free and may be withdrawn, and the member 17 then resting entirely loosely in the passage may follow. To

&

as Well as for the purpose of providing a pile which may be used either as an interlocking pile or as an ordinary pile, or may be equipped With interlocking members. In the apparatus I have provided for making such piles, the mold parts for the exterior are simple and easily handled, as they comprise two parts separable on the same plane.

Having thus described my invention, What I claim is:

1. A mold for casting concrete piles comprising longitudinally separable members, means for securing the same together, longitudinally extending inwardly projecting ribs adapted to form grooves in the outer surface of the pile and positioned by but separable from the mold members, and transversely extending inwardly projecting ribs carried by the mold arranged to extend the full length of the pile to be cast, in-

wardly projecting ribs on the inner surface of the mold extending in alternate directions from one longitudinal rib to another and secured to the inner surface of the mold, and means for forming recesses in the pile opposite the point Where the transverse ribs meet the longitudinal ribs.

In testimony whereof I hereunto affix my signature.

JESSE E. lVILI-IELM.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. C."

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