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ee eA ee" ee ae yee MARINE REVIEW. it Capt. Alex. McDougall's Patents.* BORING MACHINE--SPECIFICATION FORMING PART OF LETTERSPA- TENT NO. 469,840-- DATED MARCH 1, 1892--APPLICATION FILED MARCH 3, I189I--SERIAIL, NO. 383,562-- NO MODEL, This invention relates to an improved machine for boring holes either on land or under water for posts, piles, telegraph- poles, foundations, wells, and mining purposes. 'The inventor says; y "The principle object is to provide a portable machine for these purposes which can be operated very cheaply and wherein all dirt, rock, or material from the hole which is being formed will be removed during the operation of boring the same. An- other object is to provide a machine of the character mentioned, wherein all shafting or mechanical appliances for connecting the boring tool with the source of power are dispensed with. And | |b? Lig. L. va | IKE j || zea o Al A {EEE J | Gi x i Shi AVA ae 4 WH i | Y Wy MU WAL | - Y rh j | f| LUT I NM | \ es pe Tet 7 = ANE ----s = --Y-- ) y A Y | d , Neg. 8 F ; Ag, 2; 7 still another object is the production of such a machine wherein the boring tool will not be broken in case an obstruction 1s en- countered, but will come to rest although the source of power may.continue to operate. 'The principal novelties consist of a casing having an outlet-pipe by preference, a straight pipe pass- ing through said casing and carrying a worm.or propeller or Screw wheel or equivalent device within its lower end, a boring tool beneath said pipe and connected with and operated by the said worm or other device, a pump or other apparatus for forcing water in said pipe, and a flexible pipe connecting said pump with said straight pipe, all.adapted to the use intended. Fig.1 is a sectional view of the apparatus, Fig. 2 an enlarged sectional view of the form of boring tool and the operating. worm therefor, and Fig. 3 an enlarged sectional view of a modification of the same. "A represents a cylindrical casing made of metal and having *Under this heading we will publish specifications accompanying letters patent granted to Alexander McDougall, of West Superior, Wis., since his first application for @ patent on the whaleback type of vessel, May 1, 1880, an enlarged base B and adapted to sit firmly on the ground over the hole which is being bored. This casing A is preferably pro- vided with a nozzle C for the discharge of the water through the casing. It should be understood, however, that this discharge nozzle may be dispensed with, in which case the water would discharge out through the top of the casing. Ifthe nozzle C is used, it is preferable to provide the casing with a cylindrical ex- tension D, as shown, so that there can be no leakage of water at this point. E is a straight metallic pipe extending down through the casing A and provided with an enlarged head F at its lower end. This head F may be made integral with the pipe E, or it may be seperated therefrom and secured to the pipe in any suitable manner. At the upper and lower portions of the head F are spider-arms a a, which are mounted in place in any suita- ble way, or they may be cast integral with said head. Mounted within these spider-arms is a shaft G, having its lower end ex- tended some distance below the bottom ofthe head F. Mounted on this shaft within the head F isa worm H (shown in Figs. 1 and 2). Instead of a worm a propeller I may be used, as shown in Fig.3 | Both of these forms of devices have certain advantages, and I do not wish to be limited to the use of either. By chang- ing the pitch of the worm or propeller, the speed of the same may be regulated. A boring-tool J is secured to the lower end of the shaft G, and is ot a diameter sligtly smaller than the inter- ior of the casing A. Fe In Fig. 3 the form of boring tool illustrated is simply a well known burr, and in Figs. 1 and 2 the boring tool consists simply of a circular plate having ears or lips cut or punched therefrom, for which I make no especial claim herein. The first form of boring tool is more advantageous than the latter form, inasmuch as it will feed itself into the material to be cut. K is a pump placed at any suitable point and may be of any suitable | construction. A steam pump is preferable, for the reason that a much more powerful stream otf water can be thrown by this va- riety of pump than by any other. It should be understood that a pump may be dispensed with if there is a sufficient natural water pressure to the necessary work. 'The pump K is connected to the pipe EK by means of a flexible pipe L, which is preferably -- a rubber pipe, so that the said pipe E will be free to move up and down. 'The operation of the device is as follows: The cas- ing Ais placed in position over the point where the hole is to be | bored and the pipe E is allowed to drop by its weight, so that - the boring tool J will rest on the ground. 'The pump K is now started, and water is pumped through the pipes I, and E and head F, and this water will escape up through the interior of the casing and out through the nozzle C. As the water passes through the head F it will cause the worm or propeller to revolve, and in this way the boring tool will be operated and will bore into the earth to form the desired hole. The dirt which is cut up by the boring tool will be carried out through the nozzle C by the overflow of the water, and in this way there can be no ac- cumulation of dirt. It will therefore be seen that the water not only operates the boring tool, but that it removes from within the hole the dirt which is accumulating. It will be evident that the device might be operated by pumping the water in through the nozzle C and allowing it to escape through the pipe EH, and I would have it understood that this specification contemplates such modification. 'What I claim as new and desire to secure by letters patent is as follows: First--In a boring apparatus, the combination of a casing A, a pipe E, movable vertically within the same, a worm, propeller, or equivalent within said pipe and adapted to be operated by the downward flow of water through the same, 'and a boring tool connected to said worm or equivalent, sub- stantially asset forth. Second--In a boring apparatus, the com- bination of a casing A, a pipe EK within the same, a worm, pro- peller, or equivalent -within said pipe H, a boring tool connected to said worm or equivalent, a pump K, and a pipe L, connecting the same and the pipe E, substantially as set forth."' Steamships and Their Machinery. _ We have received from Spon & Chamberlain, No. 10 Cortlandt street, New York, N. Y., a copy of " Steamships and their Machinery," by J. W.C. Haldane. It contains over 500 pages devoted to machine tools of ship yards, several chapters being given to descriptions of English and Scotch shipbuild- ing plants. The recollections of organization of a new engineering and ship building establishment are interesting. Two chapters treat of marine boilers and their design. There is not much of popular interest in the book, but it is valuable to managers and superintendants of ship and engine building estab- lishments. The price is only $6.