Dec. 31, 1946.‘ , ~ F, G, HEHQ 2,413,561 PORTABLE EXCAVATING AND EJECTING MACHINE ‘ I ' Filed Sept. 26, 1945 INVENTOR Ema/#03127 ATTORNEYS . 2,413,561 Patented Dec. 31, 1946 UNITED STATES PATENT orgies 2,413,561 PORTABLE EXCAVATING AND EJECTING MACHINE Frederick G. Hehr, Santa Monica, Calif. - Application September 26, 1945, Serial No. 618,689 4 Claims. 1 This invention relates to that type of apparatus adapted to be used “by divers or other under water workers for loosening and dislodging mud, sand, gravel, silt, clay or other impeding granular matter from their beds or from a given location and simultaneously ejecting or discharging the loosened particles of the deposit of material in suspension, that is, commingled with water, to (Cl. 37-62) 2 . marines where speed of operation often is a highly important factor particularly where the lives of entrapped persons depend on the rapidity with which the submarine can be raised. In disasters of this character it is necessary for a diver to burrow through the earth immediately beneath the submarine to provide tunnels or openings extending transversely thereof for the passage of lifting chains. These operations may a different location remote from the loosening operation and where its presence does not im l0 be carried on with speed and facility by means of the present invention in contradistinction to pede the work under progress. many devices old in the art which are cumber The principal object of the invention is the some in character, consume valuable time for production of a unitary apparatus or device of purposes of installation and most of which re the above character which shall be portable and compact and easily manipulated by the oper quire one apparatus for the excavating oper ator, such as a diver or other under-water worker, ation and a separate one for the removing or ejecting operation. Furthermore, in most of and which shall also utilize a ?uid, preferably these old devices the rearward thrust produced water, under high pressure as the loosening as or developed by the discharge of water or air well as the ejecting agent. A further object of the invention is the pro 20 under pressure from the excavating nozzle makes the device extremely dif?cult of handling and duction of an apparatus of the above character manipulation by the diver or other under-water in which the excavating and ejecting ?uid under operator. pressure shall be ‘supplied to a common chamber In the accompanying drawing illustrating a from a suitable source of supply for simultane ous discharge from both an excavating nozzle 25 practical embodiment of the invention: Fig. 1 is an elevation showing a diver or other and an ejecting nozzle thereby conserving the under-water operator using the device of the in amount of fluid under pressure ordinarily re vention under actual working conditions. quired for operations of the character referred Fig. 2 is a fragmentary section taken through to. A further object of the invention is the pro 30 the apparatus itself and, Fig. 3 is a vertical cross-section on the line duction of an apparatus having the above char 3-3 of Fig. 2. acteristics in which the inlet pipe for supplying Referring in detail to the several ?gures of ?uid under pressure to the ?uid chamber shall the drawing: provide a convenient gripping means or handle A metallic ?uid chamber for receiving fluid for the operator of the device. 35 under pressure, either air or water, is indicated Still a further object of the invention is the at [0 and is connected, preferably integrally, with production of a combined portable, excavating and a metallic ?uid inlet pipe I l which is bent or ejecting device or apparatus in which the ex curved and extends rearwardly of the device, as cavating and ejecting nozzles shall be positioned in alignment and in opposed relation to each 40 shown, and provides a convenient handle or gripping device for a diver l2 who is shown at other and shall be of equal or the same size or work in Fig. 1 beneath the surface of water in capacity whereby the thrust of one nozzle in dicated at iii. A ?exible tube or hose it is con one direction produced or created by the force nected at one end to inlet pipe ii and at the of the jet of ?uid under pressure discharged therefrom shall be counterbalanced or neutralized " other end to a source of supply of ?uid under pressure (not shown) which may be a driving by the thrust of the other nozzle in the opposite motor and pump carried by a boat 55. Conven direction resulting in internally balanced forces. tional air lines it are shown connected to the Other and further objects and advantages of usual helmet I‘! for the diver l2 and they ex“ the invention will appear from the accompany tend to their source of supply within the boat i5. ing description, the invention consisting in the Extending forwardly of the fluid chamber iii novel portable combined excavating and ejecting and communicating therewith is a hollow cone apparatus hereinafter more particularly de shaped member 58 preferably integral with a scribed and then speci?ed in the claims. wall of chamber I0 and constituting the exca The device of the invention is especially use vating nozzle of the device. Said nozzle is pro ful, for instance, in the salvaging of sunken sub 2,413,561 3 vided with a tapering or inclined wall terminating at its forward end in a discharge opening l8’ of restricted size. The opposite side of said ?uid chamber I0 is provided with a rearwardly ex tending hollow cone-shaped member l9 opposed to and in alignment with the excavating nozzle [8 and also preferably integral with a wall of chamber Hi. Said member 19 communicates with fluid chamber [0 and it constitutes the ejecting or discharge nozzle of the device. It is also pro 10 vided with an inclined or tapering wall, as shown, 4 on substantially simultaneously, the water adja cent the work at hand does not become beclouded thereby permitting the diver to carry on his op erations with clear vision. The invention claimed is: 1. A portable apparatus for excavating and ejecting under-water materials comprising a ?uid chamber, an inlet pipe communicating with said ?uid chamber and adapted for connection with a source of ?uid under pressure and providing grip ping means for manipulating the apparatus, an excavating nozzle connected to and extending outwardly from said fluid chamber for excavat ing materials by the force of the jet of ?uid dis id’ of the nozzles are of equal or the same di ameter and therefore of the same capacity, that 15 charged from said nozzle, an ejecting chamber having an opening adjacent said excavating noz is, they are adapted to discharge, in a given unit zie for receiving the excavated materials in sus of time, the same amount of ?uid under pressure pension in water, an ejecting nozzle connected to forcibly fed to them from the common ?uid said ?uid chamber and extending within said chamber I9. A metallic pipe or tube is indicated at 20 and 20 ejecting chamber for discharging a jet of fluid constitutes a receiving and ejecting chamber for under pressure therein to draw the excavated ma terials in suspension through said opening and the material in suspension excavated by the ac within said ejecting chamber by suction, said tion of nozzle l8. Said chamber is cut away or ejecting nozzle being positioned in alignment with provided with an opening adjacent its open end for the reception of inlet pipe H to which it is 25 and in opposed relation to said excavating nozzle and both of said nozzles having discharge ori?ces secured by welding, soldering or otherwise. A of equal capacity whereby the thrust of one nozzle strut member 2| may be provided which is fas terminating in a discharge opening l9’ ofre stricted size. The discharge openings 13’ and in one direction counterbalances the thrust of the tened to chambers ID and 2E]. Said strut member opposed nozzle in the opposite direction and acts to support and strengthen ?uid chamber IE) and its attached nozzles 18 and I9 and it also pro 30 means connected to said ejecting chamber for discharging the excavated materials in suspension vides a stop for preventing large objects from en therefrom to a point remote from the excavating tering or being drawn into chamberZ?. As illus nozzle. trated, fluid chamber iii and nozzle H? are en 2. A portable apparatus for excavating and tirely encompassed by tube or chamber 20 and ejecting under-water materials comprising a ?uid nozzle It extends an appreciable distance within chamber, means for supplying said chamber with said tube and in spaced relation thereto. a ?uid under pressure, an outwardly extending In Fig. 1 the diver i2 is shown at work on a cone-shaped nozzle extending from and in com mound of granular material indicatedat 22 which munication with said chamber for excavating the is to be broken down into particles and removed in suspension in the water by means of the ap 40 materials, an inwardly extending cone-shaped ejecting nozzle in alignment with said ?rst-named paratus of the invention. The jet of ?uid under high pressure discharged from the excavating nozzle and also in communication with said chamber, said nozzles being of equal capacity nozzle “3 loosens and breaks away the granular whereby the thrust of one nozzle created by the matter of the mound of the materia1 and it is force of the jet of ?uid under pressure discharged drawn in suspension in the water into the tube or therefrom counterbalances the thrust of the other chamber 20 by suction created by the force of nozzle in an opposite direction and an ejecting the jet of ?uid under high pressure discharged chamber receiving said ejecting nozzle for eject from nozzle Hi. The kinetic energy of the jet dis ing the materials in suspension loosened and charged from said nozzle is imparted to the mate rial in suspension drawn into chamber 20 and 50 broken away by the action of the excavating noz drives it through a hose or tube 23 to a point re zle. 3. A portable apparatus for excavating and mote from the work at hand as shown in said Fig. ejecting under-water materials comprising a ?uid 1. Hose 23 is preferably ?exible and is of sub chamber, means for supplying said chamber with stantially the same diameter as tube or chamber 2i]. It may be coupled or otherwise connected to 55 a ?uid under pressure, an outwardly extending tube or chamber 20 in any convenient manner. cone-shaped excavating nozzle extending from and in communication with said chamber, an in Also, if so desired, said ?exible hose 23 may be wardly extending cone-shaped ejecting nozzle in held in any desired suspended position to clear alignment with said ?rst-named nozzle and also obstructions by means of hollow ?oating mem bers 24 connected to said hose. 60 in communication with said chamber, said nozzles being of equal capacity whereby the thrust of one It will be obvious from the above description nozzle in one direction created by the force of the that inasmuch as nozzles l8 and 19 are of equal jet of ?uid under pressure discharged therefrom or the same capacity, the rearward thrust created counterbalances the thrust of the other nozzle in by the force of the jet of ?uid under pressure dis an opposite direction and an ejecting chamber charged from nozzle l8 when the device is in op receiving said ejecting nozzle and spaced there eration is counterbalanced by the thrust in the from and comprising a tube encompassing said opposite direction created by the force of the jet ?uid chamber and having an open end‘adjacent of ?uid under pressure discharged from nozzle said excavating nozzle for receiving the material l9 so that the device may be easily directed and manipulated by the operator without undue ef 70 in suspension in water excavated by the action of said excavating nozzle. fort. The nozzle I9 not only acts to draw the 4. A portable apparatus for excavating and suspended material within the chamber 20 and ejecting granular materials from beneath the sur to eject it therefrom but it acts as a counterbal face of a body of water comprising a ?uid cham ancing medium for the apparatus as well. As the excavating and ejecting operations are carried 75 ber, a cone-shaped excavating nozzle integral 2,418,561 therewith, a cone-shaped ejecting nozzle in align-I nected to said chamber and tube for supporting ment with said ?rst-named nozzle andalso in said chamber and nozzles, a flexible hose con nected to said tube for ejecting the excavated ma terial in suspension in water to a point remote from said excavating nozzle and ?otative means tegral with said chamber, an inlet pipe communiév ‘Y eating with and integral with said chamber, a‘ tube providing an ejecting chamber open at one end for receiving the excavated material in sus-; pension in water and provided with an opening. receiving said inlet pipe, said tube encompassing said chamber and ejecting nozzle, a strut con for holding said ?exible hose in suspended posi~ tion. FREDERICK G. HEHR. '