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US Patent: 713,793
Explosive Charge
John A. Ostenberg - San José, Santa Clara County, CA

USPTO Classifications:

Tool Categories:

Frederick M. Gilbert - Walpole, Norfolk County, NH

Abenaque Machine Works - Westminster Station, Windham County, VT

J. F. Colombet
Wesley Pierper
Jason J. Maloney
Nancy P. Ford

Patent Dates:
Applied: Jan. 21, 1901
Granted: Nov. 18, 1902

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"Vintage Machinery" entry for Abenaque Machine Works

This being a division of application Serial No. 723,775, filed July 14, 1899.

The present invention relates to an explosion-engine; and the engine embodying the invention is mainly intended to be used with gasolene or other liquid explosives, although certain features of the invention may be equally well utilized in engines in which gas is to be used as the explosive element.

The main object of the invention is-to obtain practical means for water-jacketing a portable explosion-engine of the kind used, for example, in outdoor work, such as sawing wood and the like, where the base of operation is frequently changed. One of the chief obstacles in the way of using an explosion engine in such work has been the difficulty encountered in cooling, the cylinder and explosion chamber, and the present invention is mainly embodied in means for using a small supply of cold water over and over, the heat taken up by the water being distributed over a large radiating-surface and rapidly dissipated. For this purpose the engine embodying the invention is provided with one or more tanks having a large surface area, but relatively small capacity, the said tanks communicating by a duct or ducts with a water-jacket for the cylinder and being arranged above the cylinder, so that when they are filled with water the cylinder is practically submerged or wholly surrounded by water, the greater portion of the water, however, standing above the cylinder, where it is exposed to the air therefore, the water which takes up heat from the cylinder rises from the jacket into the tanks and cooler water goes down to take its place, thus producing a circulation, the warm water which rises in the tanks being rapidly cooled, owing to the large radiating-surface.


1. In an explosion engine, the combination with the cylinder; of a jacket therefor; a tank of large area and relatively small capacity, the bottom of which is above the top of the cylinder; and communicating passages between said tank and said jacket arranged to set up a natural circulation, substantially as described.

2. An explosion-engine having a cylinder provided with a jacket; an opening in the upper part of said jacket; a bonnet for said opening provided with a tubular cross member; a sheet-metal tank having one wall supported against the end of said tubular cross member; a supporting member within said tank extending from one wall to the other thereof; and fastening devices extending through bot" walls of said tank and said supporting member into said tubular cross member, substantially as described.

3. In an explosion-engine, the combination with the cylinder; of a jacket surrounding said cylinder and provided with a tubular cross member above the cylinder; tanks supported by said cross member and communicating with said jacket; and a pipe leading downward from said tanks and communicating with the lower portion of said jacket, substantially described.

4:. In an explosion-engine, the combination with the water-jacket; of a sheet-metal tank; a tubular supporting member for said tan-k communicating with said water-jacket; internal supports extending from one wall of the tank to the other; and fastening devices extending through said internal supports into said tubular supporting member, substantially as described.

5. In an explosion-engine, the combination with a water-jacket for the cylinder; of one or more tanks mounted over the cylinder and projecting beyond said cylinder; the bottoms of the tanks being above the top of the cylinder, a pipe or duct leading directly from the bottom of the tank into the top of the water-jacket; and another pipe .or duct leading from the tank near the opposite end thereof back to the bottom of the water-jacket, whereby the heated water rises into the tank and flows through the same, becoming cooled before it again enters the jacket, substantially described.

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