US1878282A - Dredge - Google Patents

Description

Sept. 20, 1932. w. B. MACAULAY DREDGE Filed June 2, 1930 3 Sheets-Sheet 2 A TTORNEYS.

Sept. 20, 1932. w. B. MACAULAY DREDGE 3 Sheets-Sheet 5 Filed June 2, 1950 y j, m @MA n um i N me R Vw m WW .HM m W lllllllllll Il W `|I|||1 H un H w: m RS M SQ W a.. www mi m Wm. J f mw .Q @E |l| w k r a W mm mm Q W L RQ x .NQ I l l l Il ll Il WS w m@ L? \\.m\ mg mg m.m\ .NN OQ u Q\ lwlHnrN \m.\ mm

Patented Sent'. 2 0, .1932", 'Y

- to operate onbodies'ofvvater, `eithernatural f or artificiel, for the purposefofz removing ing machinery is-loe'tedeand vvhiohfi's poshv Y or paying .outeelected ones of the kcablesvin'V order to loetethedredge for themost ativan-5 1` tgeous 'operation and alsosfor propelllng the dredge from Vonefloeetionto another v on the tioned areof 'considerablesiz'e andthe--mech'V 'anis'mjfor hendling-- the cbles and-for maneu- 20 complexity and of the 1 11 1 1`nerous:lA` controls necessary; VSuchl A dredgesv often areV utilized. Y25

i tionis not of the highest end 'njfvvhioh the i laboroanyfoharaterf-Irfthe pstin order- Og dredge bywirme 'Of-the freer-that the' ense, ef"

tending from .their hull toi suitable'boints off tomarily are used and there isordmarlly pro-l f gprovideie dredge in vvhiehthe'nianeuverabili4 ity. of 'the dredge isY improved over previous v-praetce.n T

videfa` "dredge-whioh banbe maneuvere'd withv ajveryfmuoh smallerierevv than'fusuaglgf'npthe Y j "Drinnen:

App'nation manne 1930.A` `seria No."458,985; preferred vcase necessary. Y f

A further object of my-invention'isfto'pio- Vide ,'nechanism for controlling the (jlredgelofv such L nlturelthat thephysiealieffort'involved in .operation'is reduced't s'rninimurn. An additional objec'tfofniy 'invention-is l.toV provide'epoweriopereteddredge'eontrelsuclr i thatznofdamagecan ooeuriit'rthe powerfsupf ply'shouldifil.' 6'0" z The lforegoing f and other :Objew ere?- utf1 f tined lin! the embodiment" of the in'ventionr invention relates to v dredges .idapted' Signez-@lue earth or similar-materiel .frorn'fbeneztthithe surface of the Water. Dredgesaof this. type usually comprise: a; hullon Vwhichthedredgtioned for operationv by ineens' ofeagbles exi anehorage; A pluralityfofsuch f cables eus?` vided on `the 'hull Vmachinery for haiulir'lgffin shown inthe "drawings, in Whichr Fig-:1 is a Side elevationefffrp'quienQ-frjief cable 11emev .includedinehe:dredgeshowingf f i body of WatenfDredges 'of the` type nienhere? climate all;butpreoludesfstrenuous yphysical V to operate it allgevenvvith inclifl'erentsuoij Veessgit has been Vnefees'saiyjtolernploy large' revv of operators usuellyfvvi-th each operatoriY essignedfto a p ufteu lar` duty *in gconne'etier'1 Y .the dredge. Not onlyis the physical labor Alhough th-dredge--of-m 1 being operated'-vvithjgreat"-advatntege La? provided which is capable yof connecting the drum 7 to or disconnecting it from a gear 12. The clutch is of any preferred type and is provided with .an actuating collar 13 whichv in one position permits engagement of the clutch to transmit power from the gear12 to the drum 7 and in another position disengages the clutch to prevent the transmission of power from the gear 12 to the drum 7.

Also associated with the starboard bow line drum 7 is a brake 14 of any desired kind and in the present instance comprising a friction band engageable with the drum 7 to constrain undesired rotation thereof. The brake 14 is controlled through a lever 16 so that in one position of the lever `the brake is applied and in another position of the lever the brake is released. f. f

Arranged on the framework 6 parallel to the Vdrum l7 is a port bowfline drum 17 mounted on` a shaft 18 kjournalledin bearings 19 and 21 secured to the framework 6. The port bow line; drum 17 Vis provided with a clutch 22 operated by a clutch collar`23 inthe customary fashion, and is provided with a` brake 24 responsive to a brake lever'26.. The drum 17 is connected through clutch 22 with` a gear 27 mounted on the 'shaft 18,;and meshing with gear 12. l

In asimilar fashion5a starboard stern line drum 28, journalled as at 29 and 31o=n the framework-6, is providedwith a. clutchl 32 controlled bya clutch collar 33 and is yprovided witha brake 34 actuated by. a brake lever 36, so that thed-rum 28 can be connectedV` or disconnected, as Y desired, from shaft. 37 mounted in the journals 29 and 31 and canrbe retarded frictionally by, means of the A brake 34. A" gear 38de connected to- ,the shaft' 37v and meshes with gear 27.

InV a comparable manner a :port stern line drum 39 is freely rotatable on a vshaft v41 mounted in bearings 42 and 43 on the framework 6, For connecting the shaft 41 with the drum 39 a clutch 44 is provided which-is actuated through the medium of aY clutch collar 46. The drum 39 is likewise provided with a brake 47 actuated by a brake lever 48 while power is transmitted to shaft 41 by a gear 49 meshing with gear 38 and` likewise meshing with a pinion 51v secured at the' extremity o-f a shaft 52Awhich in turn is journalled as at 53 Vand 54 in the framework 6. Y

In parallelism with the drums vpreviously described is a head line drum 56 freely rotatable on ashaft 57 mounted in bearings y58 and 59 on the framework 6 and carrying Vat one Aextremity a bull gear 61. At one Sideof the head line drum 56 is abrake 62 controlled through a brake shaft 63 for selectively offering frictional retardation to the drumV 56.

Meshing with bull gear `61-and freely rotatable on shaft 52 is a pinion 64 connected to the driven member of-a clutch V66 likewise mounted onshaft 52.V 'Ihe driving member frame 74. Also'mounted on shaft 71 is a vgear 76 and a larger gear 77. 'Ihe gear 76 vmeshes with a gear 78 of approximately the same pitch A, diameter freely rotatable on a shaft 7 9 journalled at 81 and 82 in the auxiliary frame 74. Meshing with the gear 77 is a pinion .83 of considerably smaller pitch diameterzwhich likewise is lfreely rotatable on shaft*v 79. In vorder to transmit driving power-from shaft 79 vthrough gears 78 and 76 as a unit or optionally through gears 83 and 77 as a 'unit' in orderto provide two different 'speeds of-drivefor the shaft 52, I mount a pair of clutches`86 and" 87 on the shaft 79 for alternative engagement lwith the gears 78 and 83 respectively; d i

, In accordance Lwith my invention I provide means for selectively actuating any desired one or any ,desired plurality of the various clutches-pand brakes heretofore described.

The operating means is preferably pneumatic so that the actual forcev required of the operatorto operate anyone or Amore of the unitsvis 'derived from a mechanical source and is" independent of substantial human labor.v `Furthermore, I provide controllers for theivariousvunitsi in such a fashion that the pneumatic force available is controlled fromasingle point'or location,v usually remote from the lineedrums described, and convenient for actuation by ofthe dredge i #At a suitable place 'on the hull of the the chief operator dredge I provide a source of pneumatic Pres- Y sure such as ian'rair` compressor 91 for malntaining an airreservoir 92 .in operating condition. A main conduit 93 leads from the reservoir 92 vto the control house or other selected point on the dredge for centralized op.- eration.. :Connected to. the main 93 is a clutch control valve 94 which vin one position of the controller such as 96divert-s air from the main y93 into a duct y97 leading to apneumatically expansible chamber 98 which is line Ydrum56 and iseffective when expanded to vengage the'clutch'for transmitting power from `shaft 52 tothe pinion 64'to rotate the drum`56in yaccordance with the rotation of the shaft;A Y Y In vanother'position of thev controller 94, a position such as V99, for instance, air is taken from vthe main. 93 and Vis passed through a conduit 101 vleading to a'pneumatically eX- pansiblel chamber 102 which, when expanded,

connected to the clutch collar 67 ofthe head operatesthe clutch collar "67 to releasefor dise A engage theV clutch;` 6,6` so that no vpower Vis soV :brake lever `26 foroperating thebrake'whic'h can,` if desired', be furnished'with unidirec-x tional bias weights,las previously described.

' fromthe main 93. f

transmitted between the shaft-52 and theV headline drum:56. By jvirtue'of this ar' i rangement there is under `control of a single i l.operator the entire ,operation'of the clutch controlling the yfunctioning! of the head' line drum. y y f i "To supplement the power 4drivegand to afi `ford an additional 'controloverj the drum 156 is available the drum 5 6 cannot inadvertently be rotated. For expanding' therchamber Y 103'I connect yitfthrougha conduit 106 with a brake controller 107 preferably provided*V with a `gauge 108 andA recfe'iving. pneumatic g' pressure fromthe main 93. The; controller I 107 is such Ythatpneumatic` pressure can Se-fi lectively be applied-to the .chamber 1031`to f f operate the brakef62 in thefdesiredmanner,`

and amount.

drum 17 I. provide pneumatic Vchambers 107 and 109 leading'respectively through conf duits 109 and 111`to a clutch controller 112 receiving air fromjthe--main 9.3 andcapahle of transmitting pneumatic pressureaselectively' to the chambers; 107 and'109 for shifting theQV clutch .collar 23 to'engagedor disengaged Ipuf.; sition of the clutch. 'lfherejis alsoprovided.

'an expansible chamber1-13-connected to the."

The Vchamber 113receives pressurethr'ough a duct 114 leadingto abrakevalve 116 atthe selected po-intfof `control, the brake `valve being supplied with pneumatienpressure The starboard stern' line ddrum,isilikewisei` connected by its clutchcollar133 to pneumatif cally expansible chambers 117" andfljl4 re spectively connected` through ducts 11-9-f-and 121 to aelutch controller122receiving air .fromrtheinain 93 andcapable of transmit.- f `tingthe-,pneumatic pressure selectively to!L `either of-'the 'chambersf117 andf11`8- The-"1i bl"'361 Vtl V'tb w m e leven of le S M' Oard'st'ervl' meins not-permittedto shift.itsfpositionzor to4 l drum 28isconnected toa pneuin atically,eX- pansible chamber 123 providedwithV a con! also connected to the'm'ain 93-andcapable of expanding or contracting the chamber 123- vat the will of the operator. Biasi'ng nieans,-'

such as the described weights,are`}optionally utilized withbrakev 34. f j

similary `fashion,the[portfstern.lineA .cally expansible chambers 127 and :l128lconl drum a9 isrproviaea with a paiffeffpnumar.

Vnefcted tothe clutchfcollarfan-d 'i veating. rthrough ducts f;1 29and `131 withj 'a pressureV from'1the1main 93 andgcapableofse Y' f ber 133 -o'f'the sainefpneumatically vexpanding Connected through-'affamata131te a brake controller -1-36fjoinedfto' the supplyf'main `93 fand-'effective to fapply or Ereleaseb'ralfte"4710611 i tionallymaintainthe'brale normally'applied."

, lfhestarboardfbowline drum clutchll '-i's controlle'di byta` pairofrpneumatic chambers .137; andl 138 "connected through -ducts-f139 and 141 with-a vclutchf`c'ontroller11421in communication withthemain93-iand having-two f Positions tofcntrol Sele@tively` the'chambers v i' l37ancl138to ac ,tuat'ev thestarboard bow line l drumclutch in the "desiredfasli-ion. .The asso# i v146icommunicating withiniainf93g -ciated brake 14,y 'optionallybiase'df to" applied ,if d l I' 'Y l position,aisactuatedjby aniexpansiblecham@V .ber-14sOiiieabya'pipe.mimManueller:

lNTotpnly.'d'ofI` control thevariousf'cable 1drums.pneumatically inv accordance with` my In a similar fashion on-the port bowzline" troll'e'din opposite Sense afpair of V,pr'jieu-V .mat'ically le' 2;pan-sible chambers 147 and .148,1- which: are connected through kpipes Y149v andi llftofaf clutch controller 152 joinedltothef" main 9 3 andcapable'of @ausingtliechambersV f f V 147and148,selectively to eXpandforenUagfingfeithertheclutclif 86. or theclutch 8? to 5 trans'mit thepowerf'at the-desiredspeed.ratio. f Y

`In accordance witli my inventionjI-have gdrumpneumatically and the `change speedf? gearing in a similarlfashion." -`l lie s'peed clutches'G and-'.87aref2sinfiultaneouslylcon1 Qi" i n provided on a dredge means for controlling a power-f5 romvany cause whatsoever the dredge wreck itselfy but the A'drumjbrakes are .alllauduit 7.124. leadingV to a vbrake controller126 `tomatically applied andA thejdredge held inplae, Pending ,prperieSumptOn ofoperain the following claim may be embodiedin a plurality of forms. f I claim: l o Y `A dredge comprising al cable drum, means V5 Jor driving said cable drum, a change-speed gear interposed between said driving means and said drum, a clutch interposed between said change-speed gear and said drum, means including first pneumatically expansible chamber `for engaging said clutch, means including a second pneumatically expansible chamber for disengaging said clutch, a brake Y `for frictionally const-raining said cable drum, means for normally vapplying said brake, means lincluding a third pneumaticallyl eX- pansible chamber for lreleasing said brake, means including Va fourth pneumatically expansible chamber for operating said change speed gear in one position, means including a fifth pneumatically expansible chamber for operating said change-speed gear in another position, and grouped pneumatic controllers for controlling said first to fifth, inclusive, of said expansible chambers. f

ln testimony whereof, :have hereunto set myhand." y i 4.

' v WALTER B. MACAULAY.

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