US 1588516 A
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June 15, 1926;
auvembo'c A. F. BARNES CONCRETE FILING Filed Mar'ch 31. 1925 Patented June 15, 1926.
UNITED STATES PATENT OFFICE.
ALBERT BENTON BARNES, OF BROOKLYN, NEW YORK.
Application filed March 31, 1923. Serial No. 629,004
Speaking of pre-cast concrete pile sections I refer to sections adapted to be used for the purpose of building up a concrete pile on the place of application by driving one or more pro-cast sections into the ground and thereafter adding to the length of the pile by additional superimposed sections.
One object of the invention is to provide an improved concrete'pile section consisting of an outer metal shell or casing filled with concrete. The casing serves as a form to retain the wet concrete until it is set, and also serves asa reinforcement of the pile, the several jointed sections being united into an .entire reinforced concrete pile, which, be-
J cause of its construction, may be manufactured at one place, that is, pre-cast, and shipped to another place where it is to be used. I IVith the above and other ancillary objects in view, my invention consists in a pre-cast, or made on the spot, reinforced concrete pile'section together with the means 1' or joining the several sections, as well as in the method of practicing the invention. In the accompanying drawing: j
Figure 1, is a sectional view of a concrete pile manufactured as a unit and comprising several sections.
- Figure 2 is a sectional view of a shorter;
section of pre-cast concrete piling adapted to be united to the unit shown in Figuare 1..
Figure 3 is an outside view of the jointed pile sections, with parts in section and broken away.
Figure 4 is a cross sectional view of the casing.
Figure 5 is a cross sectional view of another form of easing.
Figure 6 is a longitudinal section view of a portion of a pile showing modified means for bonding the concrete and the casing.
Figure 7 illustrates in section a' reinforced joint used in the piling.
Figure 8 shows in section a pile consist- 1ngpartly of wood and partly of concrete piling.
F igure 9 illustrates a method of driving a concrete pile into the ground utilizing certain features of the invention.
Referring to Figure 1 my improve-dconcrete pile unit consists of an outer metal casing filled with concrete. In this instance the casing consistsof three sections designated 10, 11 and 12. The casing sections are cylindrical and may be tapered or straight.
The sections of the casing are formed into a cylinder as shown in Figure 4 and are thereafter joined together to form the en tire casing for the unit. The joints may be of several forms. Thus at 13' I have shown a joint made by means of an outer sleeve. The ends of the sections 10 and 11 may be welded together, or welded together with the sleeve. In this case the sections are of A tapered section 12 may be joined to the section 11 by a joint as shownat 14 where the lower end of the section is serrated or formed with teeth 14 so that when the concrete is poured in, the several teeth may be firmly embedded in the concrete and thus strengthen the bond or union.
After the casing has been formed, the concrete 20 is poured in and at the same time a driving point 15 is formed at the lower end of the unit, while a recess or unfilled space 16 is left at the top as a means for adding another section if the unit is not of suflicient length.
In the event it shouldbe 'desired to reinforce the joints at 13 and 14, I may use any suitable reinforcement. As illustrated in Figure 7 vertical reinforcing means 17 or horizontal reinforcing means 18, or both may be usedas will be understood. The joint 21 shown in Figure 7 may be riveted or welded or both.
It will be seen, therefore, that as illus trated in Figure 1 this invention provides a pre-cast reinforced concrete pile unit which may be handled, shipped, erected for driving and driven into the ground. It is obvious thatthis presents several advantages. Thus the unit may be made at any time and place and when most convenient.
It may be made in sizes and dimensions to suit and by several different methods and means. If the unit should happen to be of the right length for'the job, the recess 16 at the top forms an excellent means for attaching other parts to the pile, such as flooring, beams or the like.
Figure 2 illustrates a unit which is made of a single section, or. shorter section of casing 22 filled with concrete 20. This unit may also be pre-cast away from the job. The casing 22 is filled clear to the bottom as at 23 and at the top a recess 26 is formed corresponding to the recess 16 aforesaid. In this case the unit 22 is tapered for convenient insertion or addition to the lower unit.
This is illustrated in Figure 3 in elevation and with parts broken away. The uppermost unit 22 is joined by first spreading mortar 24 in the recess 16, and thereafter insertingor adding the upper unit. The mortar unites and b inds thetwo' units together, and they arethen driven into,the ground. The pile may thus be lengthened as required by adding units at the top; And
of course, a unit having several sections may also be thus added if found convenient.
In assembling the casings, the longitudinal' joints 25 will preferably be staggered as shown'in Figure 3 and these points or seams may be made in any suitable manner.
The casings maybe corrugated or otherq wise formed as shown-in Figure 5 for better bonding with the concrete and better frictional driving into the ground. Or the casing may have projection or indentations 27 as shown in Figure 6 for the same purpose. It is sometimes desirable to use a wooden pile for the lowermost unit. In that event a construction or method such as shown in Figure 8 may be employed. In this figure the upper part of the wooden pile 28 is shown. When it has been driven down, an iron or other suitable pipe 29 is placed on the wooden pile and with the upper edge also serrated or shaped with teeth 30 in the same manner and for the same purpose, as I described under Figure 1.
A casing section 31 is slipped down over the pipe 30 a suitable length, and thereafter ctlmcrete 20 will be poured into the casing 3 firm bond between the pipe and the casing, and when driving operation is resumed, the iron pipe is driven firmly into thewood pile.
Figure -9 illustrates .a condition-where a unit, such for instance as the unit shown in Figure 1, has been driven down'to surface level, yet requires further driving, while on the other hand it is not desirable to lengthen The concrete, as is obvious, forms a the pile by a section such as shown in Figure 2. In such case I may take an empty casing section 12, bend the teeth 14 inwardly, then place a wooden follower 35 within the casing the uppermost preceding section and during the driving on the follower 35 the casing 12 serves as ameans for aligning the two casings 12, 12. And when proper depth has 1 been reached, and the follower withdrawn, the form and the reinforcement, that is, the empty casing 12 is in place and ready for pouring to the proper level, the'inturned teeth 14 serving as-a means for binding the two sections together.
It will be seen from the foregoing that the main principle of the invention,namely that of pre-casting sections or' units of different length, and some of which may again consist of several sections, may be carried out by very simple yet efficient methods, and thatit lends itself with great ease to the further developing of the concrete pile by additions of similarly made sections or units. Also that means are herein disclosed for bonding the joints and splicing, as it were, the several sections together and at the same time reinforcing the joints.
Again, that where special conditions reuireit, the precast units may be'added to or driven or otherwise manipulated to suit.
I wish it of course understood that nothing herein contained is intended as a limitation but as an illustration and disclosure of the invention, and that details may be changed without departing from the spirit. of the invention or the scope of the appended claims.
I claim 1. As a new article of manufacture a por table reinforced concrete pile unit consisting of a slightly tapered cylindrical metal casing filled with concrete, said casing serving as a form for the concrete for pouring and setting purposes and as a reinforcement in the manipulating and using of said concrete pile unit.
2. As a new article of manufacture, a portable reinforced concrete pile unit consisting of a plurality of sections of sheet by to form a recess for the reception of an I additional unlt.
ALBERT FEN'ron BARNES.