US1428788A - Excavating machine of the rotary type - Google Patents

Description

L. LARSEN.

EXCAVATING MACHINE OF THE ROTARY TYPE,

APPLICATION FILED JUNE 1, 1920-,

PatentedSeptQ 12,1922.

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L. LARSEN.

EXCAVAT'ING MACHINE OF THE ROTARY TYPE.

v APPLICATION FILED JUNE 1, 1920. 1,428,788.

Patented Sept. 12,1922.

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L.LAIRSEN.

APPLICATION FILED JUNE 1, 1920.

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Patented Sept. 12, 1922.

LEE massif, 0F TAM?ICO, Mexico} "'F Erica-Vanni MAeiiiNE'onTH'E nor'rAR-Y 'rrriii .i Application 'fiia June 1, 1920. Serial No. 385,848.

To all whom it may concern Be it known that I,'LEE LARsEN, a citizen of the United States of America, residing at Tampico, int-he State of Tamaulipas, Republic of Mexico, have invented certain new and. useful lr'n'provernents in Excavating Machines of the Rotary Type, of which the following is a specification.

My invention relates to' excavating machines of the rotary type used in'construction of reinforcedfconcrete' columns or piers, which shall; serveassupp'orts for bridges, wharves,*bulk-hea'ds, light-houses, etc. in order-to secure foundationsfor the same.

The objects of my invention are toproduce a combined apparatus which includes means. for"excavation and removingthe excavated material while theapparatus penetrates the strata gradually, and at the 'saine time to. provide a casing or coffer dam of any desired length Ondiameter; built up gradually in sections, inside which casing the concrete 'work'can be'placed in a convenient" manner without difiiculties, and which casing after the'work has been performed can be removedto'be used at other work."

My inventionincludes means wherebyit is possible to twist down cylinders by-"water pressure and jetting or dredging;and at the same time to removethe excavated material by suction; means are also provided fora quick and easy disman'tling and removing of the apparatus.

Especially where difficult conditions for I foundations are met with, it is possible by this combined excavating and suction machine to work down through any strata of the soil, and by its simpleficonstruction the whole apparatus is easy zto-handleand will 'in-practice save considerable time'and ex combind appairatus and piping system emlo d for excavating the grou Figmze 2 i a t p -v1ew "and Figure-3 a sectional'plan view of the apvidedwith a strainer lt'to allow only a 'paratus,'on' line 33 of Fig.1.

and ti Figure 5 is-a plan view of'the same, being a trarisversesectidn on line 5 51ofF1g. 4;.

ings, these figures show the instrumentsenr.

ployed to dredge the way down for the columns or pie-rs etc. to be constructed. 1 is a cylinder or tube of strong construction, conveniently made up of one top and one bottom piece or section, 1 and 1 to which sections of steel tubes or cylinders of a suitable length gradually are connected, and on the inner side of same bolted up and joined together by angle iron rings, 1 and1 or other means convenient for the purpose. To'the edge of the top piece 1 of the cylinderl is: riveted 'an anglel iron ring 3 which when connectedup rests onballs 5 and turns freely in a channel ring'lformed by angle ironsconnected to the lower part of hangerarms 2. Bymea'ns of a frame made of two angle iron rings,,7 and 7 fastened. to the upper part of armsQ is connected the top piece emf the combined ball bearing'swivel boX intended for the piping system. To this swivel which is shown in details in Figs. 4 and 5 and forms an essential part of my invention,is connected the hose 10 for water, which is pressed down and forced through the box into jet pipes 11. These pipes are madeupof short pieces according to the length required, and connected up ,to the bottom casting or body 6 10f saidfswivel,

serving at the same time as pivot or shatting;

on whichthe bottom body 6 of the swivel box with jet pipes 11 can freely turn on balls 13. The suction pipe 12 is held up by clamps 33 whichare set in a slot 34: in ring 24 and can be tightened together by bolts 35 (see 'Fig 4) thuspresting in said ring to prevent the suction pipe 12 from turning round. The bottom end of this pipeis proconvenient'size of material to enter the suc tion. pipefin order not to stop the passage of the material to be dredged out. On the lower part of the suction pipe 12 is screwed a 'T-sha'ped ring 15 which. forms a bearing material to be excavated. Theseknives'or for a rotatable ring made up of two 2 shaped irons or castings 17', which carry the knives or cutters 19 for loosening the cutters are fastened to a frame 18 made up of angle irons 18- and 18 and provided with I hinged double hooks 16 which can be connected to the cylinder 1 in the flanges or angle irons 1 as shown in Fig. 3 so that they easily can be pulled out with the whole machinery by loosening the hooks withthe wire cables or manila ropes 20 when the cylinderor casing 1 is down to its place, to leave the cylinder entirely clear to receive the concrete construction. In order to run easily and with a convenient speed bearing 15 is supplied with balls 21 for this purpose, andit is well understood that the suction pipe 12 and also the cutting machine 19 can be lowered down and easily adjustedaccorct ing to the progress of the, excavation work by adding more sections to suction pipe 12 in the same way as the cylinder sections.v "The bottom section 1 of cylinder l which preferably is made of tempered steel, is at the edge provided with teeth, 8 like a cross cut saw, which will help to ,cut and loosen hard material encountered. a The hangers 2 can be placed in any suitablehead-frame'or framework by means of steel cables 22 or the li'ke, which .can be adjusted by tightening or loosening'the turn buckles 23 in order to always keep the cylinder in proper balance so not to runbut of plumb and not to leave the'cylinder orcutting machinery resting too :hard on the ground to prevent hard strain on the rotary.

With reference tofFigs. 4t and 5 which i show the combined ball bearing swivel box,

this box consists oftwo p arv ts,"6 and 6 o f which body 6 is connectedv to thean le iron frame 7 (Fig. 1) which is fixed to hangers v e 2. Body 6 rests'on flange 36 of the vupper body of the box by means of a ring 24 which is screwed to the upper edge of the inside dlvision 32 ofbody 6 entering the recess 27' thus forming a canalor passage-28; through:

which the water'fronifthewaterhose 1Q cup for the balls 13,,and is against'the flange 38 [of the upper body 36 passes to be. conducted to the jet pipes 11 to help loosen the material to, be removed b suction through is provided with so that {the lower boxjcan. tur-n'easily onthe balls 13; placed between I their surfaces, the flangeor gland 39v entering the recess 27-so (I 2 4 that it formsa tight wholem up sothatcylinder l and thelower 'body 6 j (at pipes 11 as well {as the castings 1?' .with' the knives or cutt'ersf 19 can turn freely,

w -hi'lethe hanging mechanism 2 with ,theupp.9 gbq 6 of the, sw vel to wh h. sectionpipe 12. Thebox body 6; a flange 37 which serves as pressed lightly up' pipe 1 2 is fixed by ,meansoii clamps 33, the

cylinder lfof convenient length is gp'laced in the rotary table (not shown) and the hangers adjusted to its proper height, and then the water is turned on through water hose 10 pressing the water through the swivel box into the jet pipes 11. The cutting machine 19, will nowwork its way down loosening the material to be excavated and at the same time give way fonthezcylinderl turnedby the rotary, the. saw. likeeedge 8 on the:bottom section will also help in looseningany class ofobstructing material tobe excavated,

by being supplied' With suflicient water from the jetting system. The. materialthus loos- 8O ened will at the same time be. removed-by suction through the suction pipe 12..*Grad' ually, according to the progress ofthe work, sectionsofjtubes are added'to the cylinder 1 and pieces connected.byiunions ll to the jetpipes 11, which easily can be accomplished by taking the apparatus apart while putting in new sections. "When, the. cylinder has reached the depth from which the columns or piers shallbe constructed the meeh anism' with the-cutting machine=19 :is discona nected and removed by lifting the hooks 16 out of their seat by'm'eans of the cables" or ropes 20,- and the constructionof the columns'or piers-can now bzes'proceeded with; After placing the respective inoldsxor forms for the columns or =piiers, the cylinder or cas' ing 1 (which cuttingedge 8-convenientllyis kept in a level!'above the'concreterof the foundation forthecolumnsor piers) can be l removed to be used on other jobs, thus'saving the expense ofnew cylinders for each C01umn; v i t It is unnecessaryto mention all the great; advantages the employment of this "appara-3 tus .by its-simpleconstruction will offer to Y any operating work where this combination can be used, and by small changesin the de tails of the=constructiona:of-Zthe apparatus, which I reserve ascovered in'the s'cope 'o'f my invention, it can'be-fittedto-servealmost v I the desired height zofxth'e column t'ovbe con- "After they apparatus has beencOnnected,

structetl, 'to form ,accasin'g inside; which said column can bebuilt'iip;'- a combined swivel '125 box support, said support: having passagewayforuiwater supply; "a water supply I piping system for loosening the material to b'e excavatedga suction pipe line for conveying the excavated me eial;-said water"and' sue 13o tion systems being combined with said swivel box support; a suction pipe provided with means to separate the excavated material, said suction pipe at the same time serves as bearing and pivot on which said cylinder can turn; a rotatable cutting apparatus connected up to said cylinder and suction pipe with freedom of turning around together with said cylinder on said suction pipe.

2. An excavating machine of the type described, as set forth in claim 1, in which the water supply for loosening the material to be excavated is introduced into the jetting pipe system through a passageway formed in a combined swivel box, said swivel box being formed by two bodies of which the upper body forms a part of the support for said excavating machine and fixed to hangers for said apparatus, the other lower body carrying said jetting pipe system can turn freely around the suction pipe which serves at the same time as pivot for the excavating apparatus.

3. In an excavating machine of the type described, as set forth in claim 1, a suction pipe through which the excavated material can be conveyed, said suction pipe at the same time serves as pivot for the combined apparatus; a cutting machine; and means for carrying and adjusting of said excavating apparatus.

In testimony whereof I affix my signature in presence of two witnesses.

LEE LARSEN.

Witnesses:

F. MATHEsON, MIGUEL SnLKowITZ, C.

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