US29303A - Mode op obtaining motive powek - Google Patents

Description

UNITED STATES PATENT OFFICE.

JACOB PRINGLE, OF SUMMERHILL, PENNSYLVANIA.

MODE OF OBTAINING MOTIVE POWER.

Specification of Letters Patent No. 29,303, dated July 24, 1860.

To all 'whom 'it 'may concern:

Be it known that I, JACOB PRINGLE, of Summerhill, in the county of Cambria and State of Pennsylvania, have invented a new and Improved Mode of Obtaining Motive Power; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.

My invention consists of a bucket wheel hung within a cistern containing water, a lire-place attached to the cistern and a blowing apparatus with a pipe to convey the air to the buckets of the wheel the whole being constructed and arranged in the manner described hereafter so that the cold air on being discharged at the orifice of the pipe and coming in contact with the hot water in the cistern, will expand and displace the water in the buckets on one side of the wheel thereby causing the latter to revolve.

In order to enable others to make and use my invention I will now proceed to describe its construction and operation.

On reference to the accompanying drawing which forms a part of this specification Figure l, is a sectional elevation of my apparatus for obtaining motive power, and Fig. 2, is a ground plan.

A is a cistern, within which and to a shaft B is hung a wheel C, composed of two circular plates between which are secured a series of inclined vanes a a and an annular partition b, so as to form a series of buckets similar to those of an ordinary water wheel.

At one end of the cistern and attached to the bottom of the same is a fire place D furnished with a doorway c grate bars Z and ash pit e. From this lire place a flue E takes a horizontal direction tothe vertical tube F through which the products of combustion pass to the external air.

Near one of the lower corners of the cistern is secured a blowing apparatus Gr which may consist of an ordinary pair of bellows, a blowing cylinder, or, any equivalent instrument capable of discharging a small but forcible jet of compressed air. In the present instance the blowing apparatus consists of a simple pair of bellows inclosed within a box G the handle of the bellows project-f ing through a slot in the front end of this box where it is connected by a rod I-I to a bell crank lever I, the latter being actuated by a crank it on the shaft B through the medium of the rod z'.

A pipe 7c from the bellows passes through the cistern and has an inclined end projecting upward so as to be as close as possible to the edge of the vanes a of the wheel C without being in actual contact with the same, the orifice of the pipe being situated beyond a vertical line drawn perpendicularly through the center of rotation of the wheel.

The cistern being filled with water, the fuel in the fire place is ignited so as to reduce the water nearly to a boiling point. Motion is then imparted to the bellows so as to force a minute jet of air through the orifice of the pipe K. The compressed air which had previously been in a comparatively cold state expands immediately on leaving the orifice of the pipe and coming in contact with the water in the cistern, the expanded air displacing the water in the buckets on one side of the wheel C, and in its attempts to reach the surface of the water, turning the wheel in the direction of the arrow.

It will be evident that a constant circulation of water is maintained within the cistern and that it is constantly acting on the buckets on the edge of the wheel opposite to that where the water is displaced from the buckets. As long as the water, therefore, is maintained at a proper temperature and a current of compressed air is forced through the pipe K the wheel must revolve with a force corresponding to its diameter and the capacity of its buckets.

As a very small et of cold air is required, the bellows or other blowing instrument may be operated by the crank rods or levers above described without detracting to a great extent from the power of the machine.

I claim as my invention and desire to secure by Letters Patent- The bucket wheellC, cistern A, fire-place I), blowing apparat-us Gr and air-pipe K, the whole being constructed, arranged, and operating as and for the purpose herein set forth.

In testimony whereof, I have signed my name to this specication, in the presence of two subscribing witnesses.

JACOB PRINGLE.

Witnesses:

HENRY HowsoN, CHARLES D. FREEMAN.

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