US1442478A - Wave-motor pump - Google Patents

Description

CLIFFORD L. KEDDY, OF LYNN, MASSACHUSETTS, ASSIGNOR TO ALBERT F. AEBOTT, 0F MEDFOB/D, MASSACHUSETTS.

WAVE-MOTOR PUMP.

l Application led June 6,

To all whom t may concern:

Be it known that I, CLIFFORD L. KEDDY, a subject of the King of Great Britain, residing at Lynn, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in lave-Motor Pumps, of which the following is a specification.

The object ot' the present invention is to provide a pump adapted to be mounted on boats and other ioating bodies and to be operated by the motion of the Waves of the sea. Such a pump may be made in various sizes and is designed to be installed in vessels for the purpose or" pumping out bilge Water, or for other purposes, under actuation of the motion of the vessel in riding the waves. Further objects are to provide a. mechanism of the character and for the purposes indicated which shall have ample power for doing the work required and shall. be operated by relatively very slight rolling or pitching' movements of the vessel, and to embody such mechanism in a seit-contained structure of simple character capable ol being made at low cost and sold as an independent machine ready to be conveniently mounted by the purchaser in the position for use. v

In the drawings herewith presented, Figure l a plan view in the form olf' a Wave motor pump embodying my invention. Figure 2 is an elevation of the pump. Figure 3 is a sectional view on line 3 8 of Figure l; Figure 4 is a fragmentary elevation of one end of the guide which forms a part of the apparatus and Figure 5 is a sectional vieu7 taken on line 5-5 of Figure l showing a detail of the device.

The same reference characters indicate the same partsin all the tigures.

Referring to these drawings G represents a base plate to which there is secured a pump vcylinder 7, the latter having ianges 8 which are suitably secured to the base plate, as by bolts 9, A piston 10 reciprocates in this cylinder, and to the piston is secured episton rod ll, the outer end ot' which is sup ported and guided by a bracket l2. Said bracket, which may also be called the piston rod guide, is shown in detail in Figure 5. It has a toot portion 13 which rests on the base platel and is secured thereto, and in its upper part there is Jformed a guide or slot 14 in Whichthe piston rod llpfits, said guide slot 1919. Serial No. 362,109.

or guideway being covered, and the piston rod securely retained therein, by a removable cover plate l5.

The pump cylinder is provided with an intake pipe 16, preferably arranged to deliver through the head of the cylinder, because thereby the suction of the piston acts directly in the line of delivery ot the intake, and with an outlet pipe 17 which delivers from the side of the cylinder near the head, but may lead from the head if occasion requires. Both pipes are provided with check valves, the check valve 18 in the intake pipe opening inwardly but closing under outward pressure, and the check valve 19 in the delivery pipe epening' under outward pressure and being closed by inward pressure.

The piston rod is engaged with a lever arm 20, the end Oi' which is preferably forked so as to embrace the rod, as shown in Figure Both branches of the fork are slotted as indicated at 21 in Figure l, and the slots therei receive the ends of a pin 22 mounted in the piston rod. Arm 2O is part of a. tvvo armed lever which is mounted on a fulcrum 23, the latter being conveniently a stud set into a post24c rising from the base plate, as shown in Figure 3. Conveniently the base plate is a casting and said post 24 may be made as an integral stud or boss ot such castiiig; and so also'may the guide l2 and the trackiv'ay, presently to be described, be made as integral parts of the same casting. rFlic second arm of said lever is designated 25 and its outerA end 26 is given a. relatively great mass, whereby it is adapted -under the influence ot gravity to exert considerable force tending to move the pump piston. To provide this mass the said outer end is enlarged, and such enlarged end may be either a solid body of metal integral with the balance of the lever', or a hollovv structure filled With heavy metal, such as lead. rl'his Weight is supported by a Wheel or truck 27, which turns about a stud 28 projecting from the end of the Weight and rolls upon a `runway or track 29, such track being curved in conformity with the arc orp travel of the Wheel about the fulcrum 23 and having whatever length is necessary, in proportion to the ratio of the lever arms 2O and 5, to enable the lever to give the predetermined full stroke to the-pump piston. At the ends of the track or rrunway are uprights 30 Jforming stops Which linlttll@ movement of the \\'eiglit,a1id in or upon which are mounted spring buffers 3l arranged to bear against the wheel and thus arrest the lever without abrupt- .shocks -..L\djacent `to thesefposts Lthe s -zupporting surface of the runuv'ayuis preferably inclined upwardl)v as shown at 32 in Figures 2 and i, for t-he purposeofmoreV latter is inpositionunder `it,whereby to hold the weight immovable and thus prevent operation ofjthepump, whenfdesired.

It wllbennde'rstood from this descriptionthattilting of the bedplate- 6 about anaXis more orless nearly parallel with the 1ever"20, 25 will cause the weight to fall toward thelow side otfthe bedplate as far as permitted by therunwayi stops,. and to reverse its direction ot movement with eac-h reversal of the manner ot tiltingot1 the bed plate. 'Thereby the pump plunger is moved back-and forth in a manner such as to draw water through the inlet vand expel it through theoutlet. vThen the apparatus is puton a vessel 'with theline of the midposition ofthe lever in a `fore andaft line of the-vessel, rolling ofrltlie vessel will cause workingfthe pump ,while if it is, placed in an athwart ship'position, pitching of the vessel -w'illv have the same'effect. W'hen a suction vpipe leading to the bilges of the vessel is connected to thev intake, and a, pipe leading overboard is connected tothe outlet ofthe pump, the motor becomes an automatic bilge pump. A number of such pumpsmay, if desired, be installed inthe same vessel arranged in Vdifferent `relative positionsif desired, or all in thesa-me relative position, according to the results sought. Pumps of enough capacity would be installed in one vessel to take ycare of the normal leakage of 'the vessel, and inthe case ofen iopenvbOat,to pump out rain-water; -and, `to lthisend 1.l 1 e motor,is* effective while the= .boat lies at anchor.

'Anadvantage results "from 'the factthat the weighted lever arm swings in asubstantially horizontal plane, whereby it is able tomake its ullstroke with a very slight tilting ot' thebedplate, and Ain consequence witha very slightmotion of the vessel. The wheeler truck'27 running on -a trackway,

and whether or not equipped with :i1-ball bearing, ,supportsgthe -w inht ina manner which'largelyeliminates 'motion ndi; Prevents cra'mplng of: the lever upon 1the'fu1- Crum; thusallowing the torce of gravity to be applied with inconsiderable friction losses to operating the pump.

'I0-t' course the foregoing lsuggestion of a possible .usenet the invention is not to be taken as indicating a limitation oiE the scope o-the protection which 1 claim for this invention. rl`he machine may be installed upon anyl sort of support, whereby it may be actuated by the motions of waves on a body oli-water, and may be used for pumping anysortfof liquid from any source to any destination.

Various modifications in the structure may be made without departing from the protect-ion claimed; as for instance, by connectingthe lever and piston head by a pivoted link rather than a rod rigidly guided to move in a straight line by making the operating lever as a bell crank or otherwise, and with its, arms on thesame side as wellaslonldiijlferent sides ofthe" ulcrum; and in various 4other respects "known to mechanics.

llhat I'claim and desire to'secure by Letters APatent is:

1.'A wave motor pump. coi'nprising .a pump vchamber with a piston therein, a lever connected with said piston to operate the same by its swinging movements, said lever having` a weighted arm mounted at substantiallypthesame height therewith to swing in a substantially horizontal plane, andA anti-friction supporting and guiding` ineanstor said weighted arm.

Awave mot-orpump comprising a base, a .lever .pivoted upon saidba'seand having a Weighted arm, an antifrictionwheel carried by saidweighted arm, atraokway` on "the base uponwhich said wheel rests and is adapted to run, said lever and trackway being substantially horizontal and the axis of the lever substantially vertical, whereby the lever is caused by gravity to Vmove'when the vbase is tilted, a pump, and connections between s ad'lever andpump by'vvhich movements O'E'the'former actuate t-he latter.

3. A Vwave motor pump comprising in combination a support adapted to be mounted on a Afloating body and having a substantially vertical'pi vot,v a lever k tulcrumed upon said; pi votandV having a 'long arm with a :weight at 'itsjend, means for supporting vvsaid weighted long arm in afmannerA permit-ting swinging movement ci `the leverand preventing cramping ofthe' lever upon its pivot, said lever having second arm, va pump, and means by which said second lever arm operates said pump when the, lever swings. I 4. A. waveY motor comprising a pump cylinderv having an inlet and an outlet, a: piston workingin `said cylinder, an: operating Ilever Qnearm lof vwhich is 'operatively' connected with said piston,l Vthe lever havingA a second arm with a weight at its end and being mounted to swing by a substantially vertical pivot, and means tor supporting` the weighted end ot said second arm and permitting the same 'to move over its support when the .machine is tilted.

5. A wave motor pump comprising a base plate having a pivot support, a vertical pivot on said support, a lever ulcrumed upon said pivot having' a. weighted operating arm7 an antiiriction wheel mounted upon said arm, a track or runway on said base plate beneath the path in which said wheel moves in the swinging motion of the lever,-

a pump cylinder and piston, and connections between said lever and pump piston tor operatinL-'g` the piston when the lever swings.

6. wave motor pump comprising a base plate having a pivot support, a lvertical pivot on said support, a lever fulcrumed upon said pivot having a weighted operat ing arm, an antifriotion wheel mounted upon said arm, a track or runway on said base plate beneath the path in which said wheel moves in the swinging motion of the lever, a pump cylinder and piston, connections between said lever and pump piston for operating the piston when the lever swings, and stops at the ends of said track limiting the extent of movement of the arm in either direction.

In a wave motor pump. a substantially vertical pivot, a trackway concentric with said pivot in a sbstantially horizontal plane, a lever having an arm with a weight on its end mounted to swing about said pivot7 an antifriction wheel journaled upon said arm and resting` upon said traclnvay7 supporting the arm, stops at each end of the traclrway for arresting the movements of said arm, spring buiers on said stops7 and a pump unit in connection with said lever for operation thereby.

8. A. wave motor pump coi'nprising` the combination with a pump cylinder, a piston arranged to travel in said cylinder and having an extended piston rod, oi' a lever pivoted at one side of said piston rod to swing in a substantially horizontal plane and on a substantially vertical axis when the pump is in position for use. said lever having a long arm with a weigh at its outer end, and a short air-m7 said short arm extending` across the line of the piston rod and having; a motion transmitting yconnection therewith.

9. A wave motor pump comprising a weighted arm adapted to swing in a substantially horizontal plane and having a supporting wheel, a pump having a piston connected with said arm, and being operable by back and forth swinging movements of the latter, and a track on which said wheel is adapted to roll, said pump being` adapted for mounting upon a iioating support and to be operated hy rolling` or pitching of trie support by wave action7 and the wheel engaging-surface of the track being` inclined upwardly toward an end thereof` whereby to facilitate the return movements oi the weighted arm away from the said track end.

In testimony whereof I have aied iny signature.

CLIFFORD L KEDDY.

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