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Publication numberUS890764 A
Publication typeGrant
Publication dateJun 16, 1908
Filing dateJul 18, 1907
Priority dateJul 18, 1907
Publication numberUS 890764 A, US 890764A, US-A-890764, US890764 A, US890764A
InventorsRandolph E S Geare
Original AssigneeRandolph E S Geare
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dredging apparatus.
US 890764 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

No. 890,764. PATENTED JUNE 16, 1908. R. E. S. GBARE. DREDGING APPARATUS. APPLIGATIOK FILED JULY18, 1907.

3 SHEETS-SHEET l.

No. 890,764. PATENTED JUNE 16, 1908.

R. B. s. GBARE.

DRBDGING APPARATUS.

APPLICATION FILED JULY18,1907.

3 SHEETSSHEBT 3.

Niel-nu;

g? 90% Q/wny RANDOLPH n. s. GEARE, or NEW YORK, v. v.

v "DREDGIN G 'APPARATUS.

Specificationof Letters Patent.

Patented June is, 1908.

Application filed. July 18, 1907. Serial No. 384,3d1.

T 0 all whom it may concern:

Be it known that l, RANDOLPH E. S.

GEARE, a citizen of the United tates, and a resident of the city and State of New York,

have im ented certain Improvements in Dredging Appara is a specification.

This invention relates to certain improvements in dredging apparatus, and has for its object to provide an apparatus of this gentus, of which the following eralcharacter of a comparatively simple and I inexpensive nature and of a strong and compact construction which shall becapable of convenient and effective operation at various depths for removing and elevating sand and the l to be adap'tedfor employment in 1' harbors, deepening water-ways and the re in a rapid and economical manner.

v The invention consists in part, in an appa' ratus'of this general character compris ng a.

rotary pump and a motor therefor, said pump and motor being connected for opera tion at the bottom of a water-way, means for supplying energy to said motor to operate the same, and a discharge conduit extend ed from the pump and extended upwardly therefrom for discharge of sand and the like therefrom.

The -in *ution also consists, in part, in a float or barge carrying receptacles wherein the sand discharged from said conduit is adapted to be received', said receptacles having means for discharging therefrom the. water supplied from said conduit so that the sand is permitted to settlewithin the recep tacles and is retained therein while such water supplied therewith is discharged from the receptacles.

The invention also contemplates -certain novel features ofthe construction, and com binations and arrangements of the several parts of the improved dredging apparatus, Wherebycertain important advantages are attained and the apparatus is rendered simpler, cheaper and otherwise better adapted and more convenient and economical for use,

. all .as will be hereinafter fully'set forth.

The novel features of the invention will be carefully defined 1n the claims.

In the accompanying drawmgs, which serve to illustrate my invention-Figure 1 is an axial section taken through the casing of the pump and motor andshowing various. features of construction thereof as will be hereinafter explained; Fig. 2 is a side elevation of the casing for the pump and motor of the improved apparatus, showing the rods and connections for elevating and lowering said casing and for laterally moving and guiding the same; Fig. 3 is a general sectional view taken transversely through a barge or float provided with my improved dredging apparatus and showing the same with the pump and motor casing lowered in position for use in dredging; Fig. 4 is a plan view of the central portion of the barge or float shown in Fig. 3; Fig. 5 is a side elevation of the barge or float as shown in Figs. 3 and 4; Fig. 6 is a plan view of the barge or float as shown in Figs. 3, 4 and 5; Fig. 7 is a plan view showing my improved dredging apparatus so applied to a-barge or float as to be capable of being swung completely round for operation on o posite sides and atlopposite ends thereof; 1g. 8 is a side elevation of the apparatus constructed as shown in Fig.

7, and Fig. 9 is a detail view showing the I means for draining water from the-tanks or receptacles of the barge or float according to my mvention.

As shown in these views, the improved dredging apparatus comprises .a combined pump and motor casing formed from an upper section 1, an intermediate section 2 and a lower section 3, said several sections being provided with flanges a, 4, fitting flush upon one another and adapted for the passage of bolts or other securing means for holdthus formed is provided at its upper part with a bail 5, the lower ends of which are pivotally connected, as seen at 6, 6, at opposite sides of the upper section 1 of the casing,

while the central portion of said bail is providod with an eye as shown at 7, for connection with thelower end of a cable 8 by means of which the casing may be raised and lowmg said sections in relation, and the casing ered as will be hereinafter explained. The

opposite sides of the casing thus formed are provided with lugs; or bearings 9, 9, at top and bottom, and said lugs. or bearings 9, 9,

serve for the connection of rods or poles 1f), 10,'whic h are extended upwardly so as to be adapted for. use by persons upon a float or barge above for'guiding the casing of the dredging apparatus laterally during use of the same.

, Within the upper section 1 of the casing is produced a chamber 11, wherein is arranged an electric motor 12 of-any preferredtype, and 14 represents the c rcuit conductors tion 1 from a similar chamber 20 produced in 1 the intermediate section 2.

\ At theupper part of the lower section 3of 1 the casing is extended a transverse partition is o or diaphragm 19 serving to close the bottom of chamber 20 in section 2 and 25 represents a shaft extended axially through a central boss 16* insaid lower artition or dia hragm, its upper end bein a 'ned beneath the lower end of armature s aft 15 and its lower end being extended down into a pump-chamber 23 produced in lower section 3. 24 and 24 represent stuffing-boxes located in chamber 20 of the intermediate section 2 at the central bosses 16 and 16 of the respective u per and lower partitions 17 and 19, said stu fin boxes-being accessible by way of a hand-ho e 20 in the side of the intermediate casing section 2 and whereon a cover is applied in a well known way to close the same when the device is in operation.

At the adjacent ends of the alined shafts 15 and 25 in chamber 20 there are provided coupling members 18'and 18 res ectively, hel upon the respective shafts an adapted for engagement with each other to produce a driving connection between the shafts while permitting a certain de ree of flexure or lateral movement of oneshaft relatively to the other without unduly straining the structure as would be liable to happen were said shafts fixedly connected. -This connection is also accessible by way of the hand hole 20' in the wall of casing section 2, so that repairs may be readily effected. At one side the section 2 has a nipple 21 with which is connected a flexible pipe or hose 22 which extends upwards and is adapted for connection with a source of compressed air upon a float or barge from which the casing is lowered in such a way that compressed air is thereby supplied to chamber 20. The upper stu'ffing-box 24 will preferably be less tight than the lower stuffing-box 24!, which latter affords a substantially air-tight inclo sure around the bearing of the lower shaft .25 at boss 16 and in this manner a certain leaka e of air is, permitted from the chamber 20 ofi'the intermediate casing section 2 into the motor chamber 11 of the upper casing section 1, whereby a certain heightened air pressure is maintained within said upper motor chamber 11 to prevent the entry of and has a central opening through which the blade 27 of the pump is extended in such manner as to be ada ted to be engaged in the sand or earth. under ying the 'casing to loosen said sand or earth and elevate the same within the impeller of the pump whence it is discharged under pressure in a lateral direction through a discharge outlet 31 at the side of the lower casing section 3.

The lower part of the blade 27 of the pump carries a downwardly extended head 28, having a neck portion of reduced diameter .as shown at 29 and said neck portion by preference has detachable connection with said blade 27, the arran ement of these parts being such that sai downwardly extended head will penetrate the sand or earth to a point below the lower portion of blade 27 during the operation of the pump so that if rock be encountered, said blade is prevented from coming into contact therewith and being thereby broken. Should the head 28 be broken off at its reduced neck portion 29, it may be readily replaced without material cost or loss of time.

30 represents a plurality of downwardly extended blades or fingers which are extended downwardly around the perimeter of the casing, being secured at their up er ends to the lower section 3 thereof an having their tip ends sharpened in such a way as to be ada ted to sink mto the sand or earth sufficientl y to prevent any tendency to rotative movement to which the casing might otherwise be exposed, and whereby damage might be done to the suspending means or to the air or power connections.

The discharge or eduction passage 31 of the pump chamber 23 is laterally directed therefrom and has an upwardly curved and contracted neck portion 32, wherewith is connected an u wardly extended flexible conduit 33 which is to be carried upward to the barge or float when the sand or earth discharged from the centrifugal pump casing is to be loaded thereon. ,An ordinary footvalve may be arranged at the base of this flexible conduit to support the sand and water discharged through the same, but as such a valve is an ordinary expedient I have not illustrated the same herein.

34represents the barge or fioatifrom which the improved dredging tapparatusijconstruct- .ed according to my lnvention is operated as herein shown, and 35 represents a derrick erated in raising and lowering the casing.

pon the barge or float are located tanks or receptacles 38-,38 into which the sand discharged throu the pump casing is supplied and 3-7 repref 38, to be traversed by the workmen elevations w th '40jand serving which will of course be supplied from the con gh the flexible conduit 33 from sents agenerator for supplying current for the motor 12 A foot-board 41 is shown extended across the tanks or sand receptacles guidmg the upper end of the flexible conduit so that the tanks or receptacles may be uniformly-filled for trimming the load and as shown'in Figs. 8 and 9, the walls 39 of said tanks or receptacles are provided at suitable outlets controlled by cocks for the discharge of water duit 33 together with the sand. By this arrangement, the sand is permitted to settle in the tanks ,or receptac es, while the water overlying the same will be rapidly discharged so as'to permit the effective loading of the barge er float.

The cocks40 may, of course,

' be omitted when desired, since the outlets '6', the barge or float has 'ation at op 7 an will be closed by the rise of sand at the base of the'tank or receptacle.

In the construction shown in Figs. 4, 5 and tanks at its opposite derrick is arranged for operositesides of the vessel, but in ends and the ing rotate permits the casing to be 0 erated at the ends of the barge i or float as welas at opposite sides thereof,

for use in certain wherefore this construction is better adapted cases.

In practical use, the barge or float is mooredat the point at which the dredging is to be accomplished, and the pump and motor casing is lowered therefrom with the c0nduit 33 arranged to discharge the ejected countered, the head 28 afifords'an eflective protection against breakage of the blade 27' thereby, since said head maintains the blade above such rock at all times. The fingers 30 also operate in a similar manner and may be readily replaced when broken, being held by bolts-:or the like to the lower casing section 3.

The improved dredging apparatus con- 8, I have shown the derrick. 'mounted u on a turn-table 42 which by bej pump and motor sure for the, motor, means ior use by reason of'the readiness and convenience with which it may be operated below the water, there being no mechanical driving connection requisite for the pump, and the motor being wholly inclosed and directly connected to the pump'and efiect- .ively protected againstdefective operation through leakage, and it will also be obvious from the above description that the apparatus is susceptible of some modification with out material departure from the principles and spirit of the invention and for this reason I do not desire to be understood as limiting myself to the precise form and arrangement of the several parts of the apparatus herein set forth in carrying out my invention in practice.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. An apparatus of the character described comprising a casing having its to and side wallsinclosed to produce a charm er within it, and adapted to be lowered from a float and to be completely submerged beneath the surface of the water, a motor within the casing, means for supplying energy to operate the motor, a pump driven from the motor and also adapted to be submerged below the surface of the water, and a discharge conduit extended from the pump to a point above the surface of the Water.

2. An apparatus of the character described comprising a casing having its to and side walls inclosed to produce a cham er within it, and adapted to belowered from a float and to be completely submerged beneath the surface of the water, a motor within the casto operate ing, means for supplying energy the motor, a pump also inclosed in the casing and driven from the motor, and a discharge conduit extended from the pump to a point above the surface of the water.

3. An apparatus of the character described comprising a rotary pump, an electric motor having an armature shaft whereon the pump is mounted, an inclosure for the motor, means for supplying electrical energy to the motor and a discharge conduit extended from the pump and adapted to be extended above the surface of the water.

4. An apparatus of the character described comprising a rotary pump, an electric motor operatively connected therewith, an inclo sure for the motor, means for supplying electric energy to the motor and means for main taining increased pressure within said motor inclosure.

. 5., An apparatus of the character described comprising a rotary pum an electric motor operatively connected t erewith, an inclofor supplying elec- -7. An apparatus of the character described comprising a casmg having tWoc-hambers, a motor mounted m one chamber and having a shaft extended in the other chamber, a pump on said shaft in such otner chamber an cLhaving blades extend ed therefrom for engagement in sand or the like, means for supplying energy to the motor and a discharge conduitconnected with the pump chamber and adapted to receive sand or the like therefrom to be conveyed above the surface of the Water.

8. An apparatus of the character described comprising a casing having two chambers, a motor mounted in one chamber and having a shaft extended in the other chamber, a pump driven from said shaft in such other chamber and having blades extended therefrom for enga ement in sand or the like, means for sup ying energy to the motor and a part car- 'rie by the pump and extended below the blades thereof and adapted to penetrate such sand or the like.

9. An appaifatusof the character described comprising acasing having tWo chambers, a motor mounted in one chamber and having a shaft extended in the other chamber; a pump driven from said shaft in such other chamber and having blades extended therefromfoi'engag'ement insand or the like and arts extended from the casing below said lades of the pum and adapted to penetrate such sand or t 1e like. I

- 10. An; apparatus of the character described comprising a casing having two'chambers, a motor mounted in one chamber and having a snaft extended the other chamber, a-pum driven from said shaft'in such other cham er and having blades extended therefrom for engagement in. sand or the like, means for supplying energy to the motor, and a part detachably connected with the pump and extended centrally therefrom below said blades a1. l adapted or the like.

11. An apparatus of the character described comprising a chambered casing, a motor therein, means for supplying energy thereto, a shaft for the motor, a pump having a shaft extended adjacent to the motor shaft and a flexible connection for driving the pump shaft from the motor shaft.

In Witness whereof I have hereunto signed my name this 28th; day of June 1907, in the to penetrate such sand presence of two subscribing Witnesses.

RANDOLPH E. S. GEARE. Witnesses:

H. G. Hosn,

WILLIAM J. Fian'rn.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2484849 *Nov 23, 1944Oct 18, 1949Joy Mfg CoHeating apparatus of the fluid actuated fuel pump type
US2933837 *Jul 6, 1953Apr 26, 1960Arthur J NelsonElevator discharge hydraulic dredge
US2991568 *Nov 19, 1959Jul 11, 1961Smith Harold KelloggDigger wheel, pump and motor unit for dredges
US3041057 *Dec 8, 1958Jun 26, 1962Pearson William SDrossing system for galvanizing kettles
US3171219 *Oct 17, 1962Mar 2, 1965Ellicott Machine CorpDredge and tunnel construction apparatus comprising a downwardly inclined housing mounting a cutter and motor therefor
US3253357 *May 27, 1963May 31, 1966Allard Pierre Jean-Ma TheodoreUnderwater excavating device
US3474549 *Sep 6, 1967Oct 28, 1969Ludwig SchnellApparatus for conveying sand or the like
US3509949 *Aug 28, 1967May 5, 1970Tone Boring CoExcavation of trenches for buried walls
US3673716 *Sep 22, 1969Jul 4, 1972Alois TrondleCompressed air operated apparatus for raising underwater deposits
US3885330 *Mar 7, 1973May 27, 1975Toshinobu AraokaExcavator for digging a hole beneath the water
US4163330 *Jun 14, 1977Aug 7, 1979Konijn Nicolaas GDredge cutter head having a volute compartment
US4217709 *Feb 24, 1978Aug 19, 1980The Research Corporation Of The University Of HawaiiSubmarine sand sampler
US4327506 *Jun 25, 1980May 4, 1982Reba B.V.Gear case for a suction cutter dredger
US4680879 *Jun 28, 1985Jul 21, 1987Pjh, Inc.Underwater dredging apparatus and cutter head therefor
US6685448Feb 4, 2002Feb 3, 2004Major Turbine Pump & Supply Co.Water pump
DE1180686B *Jul 27, 1959Oct 29, 1964Verschure & Co S Scheepswerf ESaugbagger
DE2310769A1 *Mar 3, 1973Sep 12, 1974Toshinobu AraokaVorrichtung zur herstellung von bohrloechern im grund von gewaessern sowie zum einebnen und ausheben von bodengrund
Classifications
International ClassificationE02F3/92
Cooperative ClassificationY10S277/927, E02F3/9243
European ClassificationE02F3/92P