US1978331A

US1978331A - Ship's log

Info

Publication number: US1978331A
Application number: US660177A
Authority: US
Inventors: Kruth Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-03-09
Filing date: 1933-03-09
Publication date: 1934-10-23
Anticipated expiration: 1951-10-23

Description

R. STAR SHIP S LOG oct. 23, 1934.v

A IINVENTOR j/c/m/'a/,Sfm' BY mf? ATroRN Y WITNESSES Patented Oct. 23, 1934 PATENT Norrics l SHIPS LOG Richard Star, Brooklyn, N. Y.; Frank Kruth administrator of said Richard Star, deceased Application March 9, 1933, Serial No. 660,177

10 Claims. "(Cl. *i3-122) This invention relates to logs for ships and `has for an object to provide an improved construction wherein one or more indicators may be used Yand placed at any desired point on the ship.

Another object of the invention is toprovide an improved log for ships wherein an actuator is v provided and arranged at the lower partofthe larly, is the provision of a log for ships wherein 30:View through the actuator "shown in Figure 1, the

55pipe 6 into the body of water supportingr the Ship.

shipbut formed to actuate the indicators at vari` ous points over the ship.

Al further object of the invention, more particuthere is provided an actuator receiving its power through `the use of a Pitot tube, anda motor driven by Waterforced through thePitot tube as the ship on which thelog is positioned moves the actuator and the indicator, the arrangement being suchthat any expansion or contraction will be automatically taken up so that the indicator yWill be caused to function correctly andin unison withthe actuator.

In the accompanying drawings- Figure 1 is a vertical sectional View through part of aship showing the general arrangement of the log. including the actuator, indicators and power transmitting means);` o

Figure 2 is a longitudinal, vertical, sectional same beingv on a large Scale;

Figure 3 is a` sectional View through Figure 2` on the line 3 3;

` Figure 4 is a View partly in section and partly yin` elevation showing `one of the indicators illused with a Pitot tube 5whereby water is forced upwardly intoA the.actuator' as the ship moves forward. The exhaust water from the actuator 4passes `downwardly and out, through pipe 6 whichrsurrounds the tube 5 but is largerfthan the same so` that there will be ample space for the exhaustwater to pass to a pointexterior of the ship. As the ship `moves forward water enters the Pitot tube and passes `upwardly andthrough the actuator 4 and then downwardly ,through As indicated in Fig. 1, there is a standpipe 5 which acts as a vent, the level of waterwbeing shown at 5". As the water passes out of actuator 5and be exhausted therefrom.

The actuator is shown'more Vor less in detail in Figs. 2 and 3 to which'references are now made.

yAs Aillustrated particularly in Figure 2, there' is t provided a housing 7 secured in any desired man#- ner to the bottom of the ship or to some support on the ship whereby it will be rigid with the ship.v

`.Arranged in the housing 7 isa water motor 8` which is shown as being of the wabbling type, though an oscillating piston type or other type of motor may be used without departing from the spiritof the invention. The wabbling type of motor is shown in Figure 2 and has been found to be very desirable as it will function either with a small head of water or with a great head of water and will move in proportion to the head of water used. As the motor 8 functions the arm 9 will swing around in a circle and will carry with it the" arm 10 which is rigidly secured to shaft 11. A` roller 12 is rotatably mounted on arm 9 so as to reduce friction between the parts. Shaft 11 will rotate therefore at the same speed as motor 8. This shaft is connected to a train of gearing 13v arranged in the auxiliary housing 14, said train of gearing reducing the speed but naturally in`` creasing the power so that the gear wheel 15 will rotate at a less speed than shaft 11. This gear wheel `hasa pair of apertures l'into which the forked member 17 extends. It will be noted that the apertures 16 are larger than the forks of the forked member 16 whereby there is a slight loose motion between the parts. This is desirable because it does not necessitate all the parts being accurately mounted, while at the same time it' permits power to be transmitted readily to shaft 18 to whichthe bifurcated member 1'7 isfrigidly secured by a rivet or other means. 'Shaft 18 extends into an auxiliary housing 19, said auxiliary housing accommodating the lower end of pipe 20 so that the wire cable orother member 21 may extend ina vertical direction. The lower end of cable 21 is secured by a suitable fitting 22rigidly to the arm 23, which arm is pivotally mounted at 24 on a suitable support, as, for instance, on casing '7. Shaft 18has rigidly secured thereto a double armed cam 25 which is shown as lying flatwise against the swinging arm 23. A weight 26 is slidingly mounted on arm 23, said weight being locked in different positions by the set screw 27.V This weight functions to maintain a pull or strain on cable 21 and connected parts so that it will `4lthe air may readily pass upwardly through pipe 60 only be necessary Vto put a small additional pull on the cable by the cam in order to move the cable and operate the different indicators.

When the parts are in proper functioning position, arm 23 is continually resting against the cam 25 so that as this cam moves the arm will be swung. For instance, when the cam moves from the position shown in Figure 3 to a position at 90 therefrom, arm 23 will be moved downward to its extreme lower position. A further movement of 90 will bring 'cam 25 to the position shown in Figure 3 and arm 23 will automatically move back to the position shown in Figure 3.

It will thus be seen that for each revolution of shaft 18, arm 23 will move downwardly and back twice. The ratio between the rotation of shaft 11 and shaft 18 may be any desired ratio, but preferably shaft 18 rotates very much slower than shaft 11. For instance, it may rotate four or five times per minute, while shaft 11 may rotate fifty to one hundred times per minute. YAs the ship 1 moves forwardly the motor 8 will begin to function as long as the ship is in motion. This will cause shaft 18 and cam 25 to move Ycontinu-l ally and, therefore, continually actuate arm 23.

The cable 21 extends" upwardly to a point approximately at 28, where the auxiliary cables 29 and 30 are connected thereto. These auxiliary cables extend upwardly and over the pulleys V31` and 32, and-from thence over pulleys 33 and 34.

Cable extends from pulley 34 to the indicator 2, while cable 29 extends from pulley 33 to the indicator 3.

If additional indicators are desired, any desired inumber of cables may be connected with cables 29 and 30, as, for instance, cable 35 is shown in Figure 1 as being connected to cable 29 at 36 and extends over pulley 37. Cable 35 can be connected to an indicator shown as indicator 3 and,

' if desired, additional cables can be connected with cable 35, so that any desired number of indicators may be used and may be placed at various points -over the ship. All these cables are continually under tension so that even the slightest movement of arm 23 will produce a corresponding movement in the variouscables and the various indicators. As illustrated in- Figure 1, the various cables are incased in suitable housings such. as `ordinary pipes, whereby they are prevented from sagging or accidental injury. I

As all of the indicators are of identicalv construction, a description `of indicator 2 will apply to all the other indicators. Indicator 2 is shown in Adetail in Figures 4 and 5 wherein the cable 30 is shown as extending upwardly into the casing 38 and over

pulleys

39 and 40, whereby the weight 41 may be secured to the end thereof and be actuated' properly by gravity to maintain cable 30 under tension. As is well known, ships will roll as they pass along over the ocean and sometimes'vthey will toss. `To prevent any appreciable swinging movement of thev weight V41 a guiding structure 42 is provided whereby appreciabler swinging is'prevented but-the weight is permitted 'ready up-and-down movement at all times.` To

pulleys

39 and 40 whereby an even balance is secured.

Pins

49 and 50 are also carried by the casing 38 and act to limit the swinging movement of the frame 43, though they do not in any way aifect the rotary movement of the

pulleys

39 and 40. However, a spring 51 is mounted on shaft 48 and extends to a position for pressing against the sides of

pulleys

39 and 40, as shown in Fig. 5, whereby these pulleys are pressed against bar 44, thus producing a desired friction. For instance, when the parts are as shown in Figure 4, and wire 30 is pulled downwardly the

friction holding pulleys

39 and 40 is such that they will not at first be rotated but will remain stationary in respect vto the frame 43, but this frame will swing downwardly until it strikes pin 49. If there is any further movement of the cable 30, the pulleys will then begin to rotate and the weight 4l will be raised. When cable 30 is attempting to give slack, a reverse action takes place, namely, the rst action is to swing frame 43 back to the position shown in Figure 4, and then pulleys 39 and will rotate as the weight 49 takes up all the slack. Asthe arm 23 swings upwardly and downwardly slowly, weight 41wi1l move accordingly, namely, itwill move upwardly and downwardly,

- is pivotally mounted at 56 to thercasing 38 and carries a bifurcated member 5'7 which straddles the lever and is pivotally connected thereto by pin 58. The arms or bifurcations 59 not only straddle the lever 54, but straddle the toothed Wheel 60. A pin 61 extends through the members 59 near their lower ends, said pin being adapted to engage the teeth on the wheel 60 so as to rotate this wheel step-by-step as the bifurcated member 57 moves upwardly and downwardly. It'` will be seen from Figure 4 that the bifurcations 59 have lower extensions 59' which always extend belowfthe shaft 62 so that Weight 59, which is rigidly secured to or formed integral with member 57, cannot swing the bifurcations 59 beyond shaft 62 and thus causesthe parts to always remain in position so that pin 61 will engage the proper tooth on the wheel 60.

When the cable 30 `is pulled downwardly from the position shown in Figure 4, lever 53 and associated parts including pin 6l will move downwardly sumcientlyvto rotate the wheel 60 onesixth of a'revolution, or avdistance of one tooth. As soon as the/cable 30 is released and moved upwardly, the parts will move gradually upwardA and assume the position shown in Figure 4 ready for the next movement downward. f

Wheel 60 is rigidly secured to shaft 62 which is in turn secured to a pointer 63 which moves over the dial 64, which dial is preferably formed with graduations. By timing the movement of the pointer 63 anyone may ascertain the speed of the ship. It will be understood that the motor 8 and associated parts are set to function so many times per mile. For instance, if the parts should beso set that lever 63 is swung downwardly twenty-four times per mile, and it should be seen that pointer 63 vmoves around the dial four times in ten minutes, it will be clear that the ship is moving one mile every ten minutes, or six miles per hour. The'pointer 63 and associated parts really act as the principal parts of the indicator, but

inlorder ltoouty thesnumberfofmiles traveled, additional mechanism. hasxabeenf provided; 1

'4t it twillY be 4seen: rthat-flink Gli-l` is pivotallyr connectedflio vthe. arm 754;. and pivotallyi connected i atoottcfarrn 1w', .which arm .is pvotalzff. ly connected at` Llto the:- casing; 38": Abitureated member-+57?, stxnilar'to mernber't,` is provided. witl'nacounter balancing weight: 63T yse lthatthe pinl'.' and'parts-1associatedgtherewithlmayziunctionximrespect: totheftoothedlwheel 60:` in a.: lar mannerrtothe;rvvaoyf` the sameepartsffunctioniin;

v roslzxecti` tot 'the-wheel'y; onder thatL the wheels i and-iwf" may vfIuanctiocrlproperlyandsnotl rotate ini areverse: direction, rx'esilientf` parels: on springsf" and y62"- `are` provided.. As` ,the re, spective wwheelsarotate in the. rcfzirrect direction these?resilient` members.: move out'. of theL way, but; willi` quickly snapf backr:into;,position las: soon asf al tooth2is passed, i f

The toothed memberf'has; teethl of' the same number as toothed memberf 60, wherebydheishatt 68` rotates at the samespeedas'fshaft62. Shaft'f 68v is-connected by suitable gearing: to` the.A various pointers 69, '70 landf'll. whichzform azregister` For instancadial'l 'l2 over which :the pointer 69,moves; may-1 be divided into ten parts lsothati one revoluf tion off the pointer 69 will indicate ten miles; ror` knots, as preferred. Preferably'thedials 73.and` Marelikewise providediwithdivisions of ten so that when pointer 69 has reached oney revolution pointer 70will rotateoneitenth of a revolution, and' when pointerUOflhas rotated` one, `revolution pointer .'lV will `rotate one-tenth of' a revolution. By adding 'the number of miles indicated.y by" all three dial'sathe distance traveled byi the {ship willi befound. It will be. noted that. when pointer 71 has made-a completerevoiutioncthe register starts allover again tolregistera new setnf miles. If for` any reason thedistance measured by pointer 'il is not sufiicient,` another `pointer andassociated;

partsmay be provided" and. `connected up withpointer 'Itin the sameway thatrpointer 'llis connected up with pointer 70; Itfwilhbelunderstood that a well? known `train ofrgears connect yall these pointers, so that they l will function as described.

lf' desired; an ordinary distance: meter ors" indicator' may beV used' and shaftff geared thereto.

If a` pointer was mountedeonushaft 6,8. it would.

function identically with pointer 63 Preferably `the motor Sand associated parts :are rather small and, therefore, takeup very-litiflev spaceon the ship. Aliso, preferably; .the indie catcrs are small and consequently.'xnayfbezplaced,y convenientlyinv.the?captains cabin, in the pilot house, in the engineers room, and at other points.

It will be noted that the combined weights 41 of the various indicators are slightly heavier than the weight 26 so asl to maintain the Various cables or wires continually taut. By arranging I the parts in this way, the slightest movement of the cable 30 will be transmitted to the indicators so that the indicators will accurately indicate the action of the motor 8 and associated parts, which motor and parts form the actuator or driving mechanism operated by the flow of water through the Pitot tube 5. It will also be noted that all parts of the log are mechanical and that the system is substantially balanced so that only a very small amount of power is needed for actuat- I claim:- 1. A ships log lincluding a plurality of indicators adapted to be placed at different points on `-a ship, a cable extending from each of said indicators, said cables being connected together, a

, -251ml ashipsr log, an indicator, a cable for actuating the indicator and arweight fonmains taining thepull in one direction on the cable, said .indicatory including a pointer, a. ratchet Wheely rigidlyconnected wilthfsaid pointer, a` swinging structure i adapted to` engage saidv ratchet.A wheel for moving the same step-byestep, a swinging' frame carrying a pair of pulleys, said pulleys ac-` commodating said cable, means for producing friction between the pulleys and frame sunicient, toperm-it the cableto swing the frame before` the pulleys will rotate, means for connecting said frame with said ratchet operating means'where-4 by'when said frame is swung by movement of said cable, said ratchet operating means `will function.. 3; In aships log, a frame comprising a pair of* side plates, a pair of pulleys arranged betweenl said' side plates, said pulleys being arranged at the respective ends of said side plates, and means for retarding the-rotation of saidpulleys, a. shaft extending through the cen-terofsaid frame for piv.-` otally mounting the frame, meansfor limiting the rocking movement of said frame on the pivotal mounting thereof, a cable positioned with part. extending over said pulleys, means `for pulling said cable inone direction, a weight for pulling, said cable-in the opposite direction whereby said-` rame is rocked, a lever connected with .,saidf frame, said" lever beingV pivotally mounted at one` end, a swinging member pivotally mounted on. said lever, a weight for causing said swinging, member to continually tend to swing in `a given direction, alpin carriedby said swinging member, a rotatableratchet wheelA positionedV to be enf-` gaged by said pin and 'moved step-by-step thereby,` said pin moving said ratchet wheel one step uponi, each downward swingingn movementv of said lever, andmeans including a. pointer for indicating the amount of movement of said ratchet; wheel.

Y 4; In a` ships `log, an indicator including1 a` regis-terror1 indicating the dstance traveled, a. pointer, a toothedlwheel secured tocsaidpointer, a. second toothed wheel formingpart ofV said; register, means for s-imultaneously` intermittently mov.- ing said toothed wheels, a swinging frame for moving said means, abutments acting to limit the swinging movement of said frame, a pair of pulleys mounted on said frame, and means for producing friction against the pulleys so as to cause them to resist rotation, a cable mounted on said pulleys, said cable adapted to be reciprocated, means for moving said cable in one direction, a Weight connected to said cable functioning to move the cable in the opposite direction, whereby when said cable is moved in one direction the frame will swing in a given direction until it reaches one of said abutments, and when the cable moves in the opposite direction the frame will swing in the opposite direction until it strikes the other abutment, said cable being permitted to move extra distances without affecting the position oi the frame.

5. In a ships log, a cable, a cable actuated indicator comprising a swingable frame, a pair of pulleys mounted on said frame over which said cable 50 lili) passes, meansv for frictionally resisting the rotation of said pulleys whereby when said cable is moved in either direction the frame will, swing before saidpulleys will rotate, means for limiting the swinging movement of said frame` in both cured. to said pointer positioned tobe engagedr by said pin and moved as the pin is actuated. v

1 6. In a ships log, a cable, a cable actuated indivl cator comprising a register for indicating the distance traveled, a pointer, means actuated by said cable for causing said pointer and register to function, said means including a ratchet wheel connetedwith the pointer and register respectively, a Weight actuated pawl cooperating with each of saidv ratchet wheels, a lever pivotally mounted on one end for each of said pawls, means for pivotally mounting said pawls on the respective'levers, alink connecting the respective levers so that they. will act in unison, a swinging frame,

.a link connecting the swinging frame with vone of said levers, so that when the frame swings in one direction the pawls will function to rotate the respective ratchet wheels, and when swung in an opposite direction said pawls will be moved back 'l to engage new teeth, means on said frame -for re ceiving said cable, andfriction producing means to cause vthe cable receiving means to not function untilafterv said frame has been swung a predetermineddistance.

r 7. In a ships log, a cable, a cable actuated indi-A of the toothed wheel, and an extension positioned to swing against the shaft carryingthe toothed wheel when the pawl is not engaging the teeth, ar

Weight carried by said pawl for tending 4to swing the same in a givendirection, a lever, means for ipivotally vmounting the pawl `on the lever, andl a rocking frame actuated by said cable for moving said lever up and down as the cable reciprocates.

8. In a ships logan indicator, a cable for actuating the indicator, and an actuator for causing the cableto function, said actuator including a Pitot tube,a water motor adapted to be operated by the water passing through said-Pitot tube, an-

arm pivotally mounted at one end and secured at the other end to. said cable, a cam for moving said arm in onedirec'tion so asito pull said cable;

said cam having a pair of parallel flat sides and a pair ofrounded ends, one of said sides normally resting 'flatwise against the upper surface of `said arm and means for transmitting powerfrom said motor-to said cam for rotating the cam so that said arm will be Lintermittently moved and the cable will be pulled and then released alternately,l said means. including a transmitting structure` formed in such a way that the'cam will operate at a much slower speed than said motor 9. A-ships log including anindicator,l a cable for actuatingsaid indicator, a weight connected to said'cable and acting to pull the cable when permitted and an actuator for vcausing the cable to move in the opposite direction'to the movement caused by said weight, said actuator including a pivotally mounted arm connected to said cable, a cam having a pair of parallel flat surfaces and a pair of rounded ends for swinging said arm in one direction and then gradually releasing the same so that said weight may function, a water motor for actuating said cam, said cam being positioned so that the flat surfaces and rounded endswill alternately engage said arm for at one time swing-v ing water into the water motor, and means including .a discharge tube for directing water from the water motor. 10. In a ships log, an actuator, a cable moved in one direction by the actuator, an indicator4 adapted to function through ythe movement of said cable, a weight arranged within the indicator for moving the cable in a direction opposite to the direction of movement caused by said actuator, whereby said cable will be given a back and forth movement, an indicating member carried by the indicator, a toothed wheel connected with the indicating member, a` pawl forintermittently rotat-A ing said toothed wheel, and means for actuating said pawl, said means including a rocking frame, said frame including a pair of side. plates, a pair of fpulleys, journal members for supporting said.

pulleys on said sidemembers, said cable being fitted over said pulleys, and a spring acting against one of said side members and against the pulleys for forcing the pulleys against the other side member with suflicient force to permit the cable to` swing the frame a suflcient distance before said pulleys will rotate, andA a pair of stops for limiting `the swinging movement of the frame in either of two directions'.

` RICHARD STAR.