US752003A - Process of forming concrete piles - Google Patents

Description

PATENI'ED FEB. 9, 1904.

P. SHUMAN. vPROCESS 0F Pom/LING CONCRETE PILES.

APPLICATION FILED JUNE 25, 11903.

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ma cams Pzrias co, Now-umu.. WASHINGTON. u. c.

Patented February 9, 1904.

PATENT OFFICE.

FRANK SHUMAN, OF PHILADELPHIA, PENNSYLVANIA.

PROCESS OFFQBMING CONCRET PILES.

SPECIFICATION forming part of Letters Patent No. 752,003, dated February 9, 1904.

Oliginal application led April 23, 1903, Serial No.

and this application llled T une 25, 19.03.

To (11M whom t may concern.-

Be it known that I, FRANK SHUMAN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented a certain Improved Process of Forming Concrete Piles, (the same being a division of my application, Serial No. 160,190, tiled .I une 5, 1903, as a division oit' my application, Serial No. 153,974, iiled April 23, 1903,) of which the following is a specification.

My invention relates to that method of form-l ing piles of concrete or cement which consiste in iirst driving a preparatory vpile into the ground, then withdrawing saidl preparatory pile, and then filling the opening formed thereby with concrete or cement in iiuid or plastic form, which when it sets forms the permanent pile.

The object of my invention is to so construct such apreparatory pile that it can be empioyed as a means for introducing into the opening a base or foundation for the reception of the mass of concrete which is to form the permanent pile.

In the accompanying drawings, Figure 1 is a vertical section of a removable preparatory pile constructed in accordance with my invention, showing the pile driven into the ground in order to form the opening for the subsequent reception of the permanent pile; and Fig. 2 is a similar view showing the permanent pile produced by iilling the opening with cement or concrete after the withdrawal of the preparatory pile.

The pile consists of ame-tal tube 1, although it may be a solid pile, of woodvor metal, if desired, this pile being provided at the top with a suitable driving-head 2 and at the bottom with a point 3, which is detachable from the 153,974. Divided and application iled June 5, 1903,^Serial No. 160,190. Divided Serial No. 16 3,113. (No specimens.)

pile 1, so that when said pile is driven into the ground the point will be forced ahead of it until a hole of the desired depth hasbeen produced, whereupon the pile 1 can be withdrawn, leaving the point 3 at the bottom of the hole. T he concrete or other plastic material of which the permanent pile is to be composed is then introduced into the hole above the point, and when it becomes set said concrete forms the permanent pile 5, as' shown in Fig. 2, the point 3 at the bottom of the hole constituting an effective base or foundation for said pile, since it is firmly seated in the ground, the latter having been compacted by the point in the driving of the same, for the point is tapered for the double purpose of facilitating entry of the same and eecting the desired displacement or compacting of the earth without tearing or disrupting the walls of the hole. The point can be made of any material which will withstand the shock of driving.

Having thus described my invention, I claim and desire to secure by Letters Patent- The method of making concrete piles which consists in providing a pile with a detachable point, driving said pile to displace the earth,

withdrawing the pile, without the point, and after the withdrawal of the pile filling the opening, above said point, with concrete or other plastic material and permitting the same to set, substantially as specified.

In testimony whereofIhave signed my name to this specification in the presence of two subscribing witnesses.

FRANK SHUMAN.

Witnesses F. E. BnonroLn, Jos. HKLEIN.

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