US222784A - Improvement in devices for lowering and hoisting earthen tubes in bored wells - Google Patents

Description

1. HOOVER; Device for Lowering and Hoisting Earthen Tubes in I Bored Wells.

No. 222,734.. Patented Dec. 23, 1879;

W WEEEEE I E TU' \flmc WW N. PEI'ERS. PHOTO-LITHQGRAPAER. WASHINGTON n c with.

UNITED STATES PATENT OFFICE.

ISAAC HOOVER, OF WEBSTER, OHIO.

IMPROVEM'ENT IN DEVICES FOR LOWERING AND HOISTING EARTHEN TUBES lN BORED WELLS.

Specification forming part of Letters Patent No. 222,784, dated December 23, 1879 application filed March 31, 1879.

. To all whom it may concern:

Be it known that I, ISAAC Hoovnn, of Web. ster, in the county of Darke and State of Ohio, have invented a new and useful Improvement in Devices for Lowering and Hoisting Earthen Tubes in Bored Wells, of which the following is a specification.

The accompanying drawing is a side view of the device for lowering and elevating earthen tubes in bored wells.

A represents the frame, constructed of iron, the side bars of which are connected by three cross-pieces. The upper ends of the side bars are curved inward, so as not to engage the walls of the well as the device is being withdrawn.

The upper cross-pieces have mortises that support the bar B, and the lower cross-piece is slotted for the reception of two of the bent levers F, which are supported on pins for their fulcrums. At aright angle to this cross-piece are projections, which in a similar manner support the remaining two levers.

To the under part of the lower crosspiece is attached the guide J, which consists of four arms, one or two of which may be dispensed At the upper end of the bar B is attached a ring, to which the hoisting-rope is attached, and at the lower end is attached the ring G,

- to which the several chains H are attached,

these chains being connected to the upper ends of the levers, and through which the said levers are operated.

The bar moving freely within its mortises, its upward movement is arrested by its attachment to the levers, and the downward movement is arrested by the projection E coming in contact with the cross-piece. When the bar drops sufficiently low the pivotal arms C fall beneath the projections D, and thereby the levers are released of their load and the device is withdrawn.

The operation is described thus: The earthen tube is placed on the device, the rope to operate the device is attached to a pulley overhead, and as the rope is made taut the levers are thrust out and engage the tube, which is then hoisted directly over the bore of the well, and then lowered into the same. When the bottom is reached the bar descends, and the arms 0 engage the projections, thus releasing the tube, and the device is then elevated to be reloaded.

To remove tubingfrom a well, the device is lowered, with the arms engaging the projections. Now, with a suitable rope, the arms are drawn up, and as the rope is made taut the levers are thrust out, thus engaging the tubing, which is thereby hoisted to the surface.

I am aware that such is the state of the art in tube-clamps that only the curved levers supported on cross-pieces at the base of the frame, in combination with such other known parts as make my invention operative, are all that I can claim as my invention.

What I claim as my invention, and desire to secure by Letters Patent, is-

The curved levers F, supported in crosspieces at the base of frame A, in combination with bar B, arms C, and chains H, substantially as set forth.

ISAAC HOOVER.

Images