US 1024820 A
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Description (OCR text may contain errors)
APPLICATION FILED JULY s1, 1911.
IIIIIIIIII Patented Apr. 30, 1912.
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EDWARD BIGNELL, OF LINCGLN, NEBRASKA.
Speeication of Letters Patent.
' Patented Apnea, 1912.
Application :tiled July 31, 1911. Serial 110,641,608.
To all whom it may concern:
Be it known that I, EDWARD BIGNELL, a
-citizen of the United States, residing at Lincoln, in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in Piling Construct-ion, of which the following is a specification. l
This invention relates toimprovements in concrete piling, and has for its object to provide piles constructed of cement or con-A crete, each being formed to provide a carrier of water under pressure, the moving water and weight of the pile tending to form an excavation, and the Water operating as 'a lubricant to reduce friction and prevent adhesionv of soil to the surface while the pile sinks or is being driven into the ground.
The invention broadly includes a pile formed with a main channel or aperture through its longitudinal middle, this aperture having transverse branches opening upon the sides of the pile. It also has reference to certain devices useful in connection therewith to facilitate the sinking or lowering of the pile and for reinforcing the concrete structure.
With these objects in view the invention presentsa novel construction, combination and arrangement of parts as described herein and claimed, and as illustrated in the drawing, itbeing understood that changes -in form, size, proportion and minor details may be made within the scope of the claims without departing from the spirit of the invent-ion or sacrificing any of its advantages.
In the drawing, Figure 1 is a side elevation, partly in section, of a cement or concrete pile illustrating one embodiment of my invention. Fig. 2 is a transverse section taken on line a a of Fig. 1. Figs. 3 and 4 are enlarged detail views relating to Fig. 1. Fig. 5 is a top plan view of the drill-head, as on line b b of Fig. l. Fig. 6 is a side elevation, partly in section of a pile, being a modified form, of and believed to be within the scope of the invention. Fig. 7 is a transverse section taken on line c c of Fig. 6. Fig. 8 is a bottom plan view of the pile shown 4in Fig. 6.
Referring now to the drawing for a more particular description, the improved pile con-v sists principally of an elongated standard,
stem or body 7 of cement or other similar having branches 11 secured thereto and projecting adhesive material, preferably .formed rectangular in cross section with a longitudinal aperture 8, and with numero-us transverse branches or secondary apertures 9 opening upon the main aperture 8 and upon the sides of the stem.
In order to reinforce the cement body of the pile or stem, a pipe 10 may be employed comparatively short pipes or transversely therefrom, pipe 10 being disposed in the main aperture lSfof tbe pile with its branches seated in the. secondary apertures 9. An aperture 12 may be formed transversely near the upper endpfthe pile to open upon the main aperture 8, and a conducting pipe 13 may be seated therein, said pipe being connected with pipe l 10 and preferably being provided with a controlling valve 14; and water under pressure from any suitable source of supply may be introduced or passed through pipe 13 within pipe 10, and will pass out of the branches 11, the force of the flow of water bein-g subject to the control of valve 14.
The construction thus far described 2` soft ground or in the sand bars or alluvial deposits of streams where they are frequently employed. Since, by this construc-v tion, a discharge is provided at `the.bottom of the pile, water under pressure will cause an excavation to be made at and below the end of the pile. On account of the weight of the pile it will readily sink into'the excavation thus formed; and the water which passes out of the secondary pipes or branches 11 will cause a removal of the soil from the sides of the pile, adhesion of the soil being prevented. As the pile gradually sinks into the excavation thus formed, the water discharged from the end of the pile together with the sand and gravel will move upwardly at the sides of the pile. The construction is of great advantage as compared with ordinary concrete piling for the reason that it may fre uently be sunk without the use of a pile driver which often causes breakage of the pile from vibration. Also, it occasionally occurs that piles have to be removed after they have been placed in the ground. On account of suction, and by reason of the adhering soil, the removal of consocket 19.
crete piling has been almost impossible and not practicable. The construction of the pile as above described, however, is such that it may be removed, for the reason that water, when forced to points below the bottom and at the sides of the pile, operates as a lubricant to remove adhesions.
In order that the pile may be lowered or sunk in hard soil a tubular shaft 15 may be provided and disposed within pipe 10 to project below the lower end of the pile, its lower terminal being removably mounted upon the downwardly tapered drill-head 16. Any suitable arrangement of devices may be provided for causing a rotation of the tubular shaft so that the drill-head will form an excavation below the. pile, and means will now be described for this purpose. At 17 a wheel is indicated, said wheel being keyed upon the shaft and to be actuated by any suitable power to rotate the shaft. The upper end of the cdhcrete stem or pile may be provided with the supporting head or plate 18 having a depressed part at its middle to form the recess or The tubular shaft may have a collar 2() for a seating in this recess, whereby the weight of the shaft will be supported upon the pile.
The drill-head is preferably formed as a hollow cone-shaped member, of a diameter somewhat greater than the thickness of the pile, and having at its middle a longitudinalpipe-member 21, and its downwardly convergent wall may be formed with numerous perforations 22. A discharge port within the drill-head is indicated at 23, the same being formed in pipe 21 and a second discharge port 23 is indicated at the terminal of the drill, this being the open end of pipe 21; and the drill-head is preferably provided with ridges or tins 24. Since a considerable weight must be sustained by the drill-head, and to the end that the tubular shaft may be removed after the pile has been placed in the ground, a bearing-head 25 is provided which projects below the concrete body of the pile to support the drill-head. The bearing-head may be provided with a mounting in the lower end of the concrete ile at the time the pile is molded, and may e formed with the annular flange 26; and the drill may have flanges 27 mounted thereon to overlap and engage flange 26. The pipe 21 may have a square recess or socket 28 at its upper end, the lower end of pipe 15 having square walls .29 for engagement with the walls of recess 28, and when these part; are in engagement and shaft 15 is rofated, the shaft will cause the rotation of the drill-head, and when desired, the shaft may be removed from its mounting and disengaged from the drill-head.
Any suitable means may be provided to cause water, under pressure, to pass downward throu h the rotatable wheel, pipe 15 and the dri l-head, from a stationary supply pipe 30, the means herein shown being t-he us'ual apertured ball Bl'rigidly mounted upon pipe 30, and seated in latform 32 secured to wheel 17, by use o which a communication is provided between supply pipe 'pressure under control of .valve 33 may be varied.
At 34 is indicated a packing box of usual construction mounted upon cap or head 18, within which the tubular shaft may rotate; it is here employed to prevent leakage from the upper end of pipe 10. That part-,ofthe drill-head known as pipe 21 may be considered as a continuation of pipe 15 since they are connected and cooperate as a carrier of water.
In operation, water under pressure will move through apertures 22 of the drillhead as well as through the lower openings of pipe 21; the fins 24 of the drill-head tend to loosen the soil, and, by reason of the construction as described, the pile may generally be loweredinto the ground without the use ofa pile-driver.
By reason of the construction it will be noted that after the pile has been sunk, pipe 15 and the several devices upon the upper end of the pile may be conveniently removed; and this is a desirable feature, to the end that pipe 10 and-its branches may then be filled with cementv toform ra complete, reinforced pile.
Figs. 6, 7 and 8 illust-rate a modified form of the invention, wherein the elongated concrete standard or stem 7 is not reinforced; and no drill, and only one control for water ressure is provided, but in other respects 1t is substantially the same as already described. The concrete stem 7 is provided with a longitudinal aperture 8 with transverse apertures or branches 9 opening upon aperture 8 and upon the sides of the stem; and it has a tapered low'er terminal 16', and a discharge port for the longitudinal aperture opening upon the tapered terminal. Also it,has a conducting pipe 13 communicating with aperture 8, sald pipe having a controlling valve 14. In operation, water under pressure may be discharged throu h the lower end of aperture 8 or through t e transverse apertures 9 for the purposes already described in connection with pipe-- 10 andthe transverse pipes 11 shown in Fig. 1.
While the number of parts employed in the modified structure are less than those illustrated in Fig. 1, they are substantially identical so far as used, and themodified form is considered to be clearly within the scope of the invention. A
Having fully described my invention, what I claim and desire to secure by Letters Patent is,-
l. An improvement in piling comprising an elongated upright stem of adhesive material having an outwardly tapered member mounted -upon its lower terminal and formed with a longitudinal aperture with transverse branch apertures opening upon its sides; a main tubular member seated in and extending the entire length of the longitudinal aperture; secondary tubes disposed in the branch apertures communicating with the main tubular member; and a member communicating with and adapted to convey a supply of water to said main tubular member near the upper terminal of l said main tubular member.'
' longitudinally therein,
2. An improvement in piling comprising an upright elongated body of adhesive ma.- terial with a main tubular member disposed secondary tubes opening at longitudinal intervals of and upon the sides of said elongated body in communication with said main tubular member; a member communicating with and adapted to convey a supply of water to said main tubular member; a rotatable tubular shaft disposed in said main tubular member and provided with a perforated drill-head; and a tubular member for conducting water in communication with the upper part of said rotatable, tubular shaft.
3. An improvement in iling comprising an upright, elongated bo provided with a longitudinal aperture an with transverse apertures opening upon the longitudinal aperture and upon the sides of the elongated body, a conducting pipe mounted upon the elongated body and in communication with the longitudinal aperture thereof; a tubular rotatable shaft disposed .within said longitudinal aperture; a coneshaped drill-head disposed below and supported by the elongated body, said drillhead being coupled with and provided with a discharge pipe in communication with said tubular shaft. v
vet. A pile provided with a `central longitube with transverse branches for conveying water to be discharged at'longitudinal intervals outwardly of its sides; an apertured drill-head disposed below and supported by the pile;`and a rotatable shaft disposed in the tube and mounted upon the `dri1l-head,said shaft being tubular to convey water to said apertured drill-head.
6; A pile provided. with a longitudinal tube with transverse branches for conveying-water to be discharged at longitudinal intervals outwardly ot its sides; a hollow,
cone-shaped drill-head disposed below and supported by the pile, said drill-head having apertures formed in its tapered "wall and provided with a central, apertured discharge' pipe; a rotatable tubular shaft disposed in the longitudinal tube of t-he pile to form a'water conduit in communication with the discharge pipe of the drill-head.
7. A pile provided with a cent-ral, lon itudinal tube with transverse branches or conveying water to be discharged outwardly of its sides; a drill-head disposed outwardly of one .of the terminals and supported by the pile; and a rotatable 'shaft disposed in said tube and removably lmount-- ed upon said drill-head.
8. A pile having a body-portion formed of adhesive material with a longitudinal tube disposed therein having transverse branches for conducting water; a coneshaped drill-head disposed at one terminal and supported by said body-portion, .said drill-head being provided with a 'discharge pipe; a driving-wheel; a tubular shaft Vdisposed in said tube and mounted at one of its terminals upon said wheel, said tubular EDWARD BIGNELL.
Witnesses w. G. s coox, J. M. SAN'roN.