US1481829A - Power apparatus for use on vessels - Google Patents

Description

Jan. 29, 1924. 1,481,829

A; E. L. CHQRLTON ET AL POWER APPARATUS FOR USE ON VESSELS Filed Oct. 19. 1920 I Infan Patented. Jan. 29, 1924.

MORE, OF WESTMINSTER, LONDON, ENGLAND.

' POWER APPARATUS FOR USE ON VESSELS. Application filed October 19, 1920. Serial No. 418,068.

To all whom it may concern: it to the propeller shaft or alternatively the 56 Be it known that we, ALAN ERNEST Lnorsecond part of the crank shaft may be dis- RIO CHoRL'roN, C. B. E., and 'JoHN SAL- connected from the main part of the crank MOND Doro, subjects of the King of Engshaft and coupled to mechanism by means land, and residing, respectively, at West of which a winch or other machine can be minster, London in England, and Grimsby, driven. Lincolnshire, in England, have invented cer- In some cases more particularly where a tain, new and useful Im rovements' in Power winch is to be driven by the engine a varia- Apparatus for Use on essels, of which the b e speed transmission mechanism is interio following'is a specification. posed between the clutch at the forward end This invention relates to power apparatus of the crank shaft and the winch. 65 for use on vessels more particularly vessels it an en ine thus arranged it is conof the trawler type wherein the power revenient to emp 0y a propeller of the featherquired for operating the winch or other a ing type so that when it is desired to reduce l6 paratus when considered in relation to te the speed of propulsion the revolutions of power required for ropulsion is largerthan the engine can beniaintained sub other cases and has fr its-object; 'nconstantlwhile th r ulsiveIeflor .w a V .b. 4 I N V,- l I I internak'il combo t employed y e purp. pulsio'n while one. orimore of 1 inders .are separately usable for applying aratelyor toge 7 power to a winch or other like mechanism or there maybe three groups comprisin say or drivin an air compressor, dynamo or four cylinders in'the main engine which is other mac ine. The whole engine is didirectly coupled to the propeller shaft,\vhile vided by arrangin the cylinders in groups there may be one, two or more cylinders in s5 and the pistons in tile cylinders operate upon each of two or more other groups. With a crank shaft which is similarly divided and such an arrangement when the winch 18 to the parts of which can be coupled or disbe operated the main group of en ines alone connected by means of clutches. The cylmay continue to supply ower or propulinders are so grouped and the crank shaft 81011 when one or more 0 the other groups 90 and clutches so formed and arran ed that may be coupled up for supplying powerto either the power'obtainable' from all the cylthe winch. The fore or lesser cylinder inders ma vbe utilized for driving the progroup mayadvantageously be used as a 40 peller sha or only one or certain of the cylstarting en ine for the main part of the eninder groups may be so used while the re gine as wel as being available for the other maining cylinders or one or more of the pur oses indicated. groups supply power for operating or driv- I the other mechanism for which the ing a winch or other machine. Thus for expower is obtained from one or more cylin- 45 ample in the case of a six-cylinder engine der groups is for example a dynamo, this which is divided into two cylinder groups mechanism may be driven through a clutch the pistons in four of the cylinders are confrom the forward end of the crank shaft but neoted to a length of crank shaftin which in the case of mechanism of other types, but is coupled to the propeller shaft w ile the more particularly h, a variable speed 50 pistons in the remainlng two cylinders are transmission mechanism is conveniently emconnected to a further length of crank shaft ployed between the Winch and the clutch at at each end of which is a clutch so that this the forward end of the crank shaft. It is part of the shaft may be either coupled to desirable to provide in conjunction with the main part of the crank shaft andt rough this transmission mechanism some safety device which in the case of Diesel or semi-Diesel type and has a winch will yield or prevent straining of the parts in the event of an overload, on the winch. The nature of such safety device may va as found desirable and may comprise for example a slip ing control device suitably disposed in t e transmission mechanism.

The several clutches by means of which the parts into which the whole engine is divided can be coupled together and suitably controlled and operated and the constructionof these clutches may be on some known lines. The details of construction may be modified as found desirable in accordance with the type of vessel to which the invention is applied and to suit the winch or other mechanism which is to be operated.

The accompanying drawings illustrate diagrammatically two alternative constructions of power apparatus in accordance with the present invention. In these drawings Flgure 1 represents a longitudinal sectional elevation of one arrangement of the power apparatus disposed in a vessel ,the enine being available for propulsion and also for driving a dynamo;

Figure 2 is a similar view showing an arrangement of the apparatus where the engine is used for propulsion and also for the driving of a winch.

Like letters indicate like p ts throughout the drawin%.

Referring to igure 1 the engine is of the the cylinders arranged in two grou s. In one of these groups A there are our cylinders while in the other group B there are two cylinders. The cylinder group A has its part 0 of the crank shaft directly coupled at one end to the propeller shaft D. At the other end of the part C of the crank shaft is a clutch E by means of which the shaft C can be coupled to one end of the crank shaft part F of the second cylinder group B. At the forward end of this crank shaft part F is a clutch G by means of which the crank shaft can be coupled to the shaftof a dynamo H. e

The propeller J may be of the feathering or variable pitch type constructed on known lines and controlled by mechanism mounted as at K.

If it is desired to utilize full power for driving the propeller J the clutch E is enaged so as to couple the crank shaft arts T3 and F and the clutch G is disengage If the clutch E is disconnected the propeller will be driven by the cylinders comprised in group A while the cylinders'in roup B can be utilized to drive the dvnamoil when the clutch G is engaged. If desired by means of a variable pitch propeller such, for instance, as disclosed in the patent to Henry Barcroft, No. 431,428, dated July 1, 1890, the propulsive efl'ort'can be modified while 1,481 ,aao

maintaining substantially constant the revolutions of the engine. I Referring to Figure 2 the construction and arrangement of the engine with two groups of cylinders A and B and a divided crank shaft Cl together with a variable pitch propeller J coupled to the after end of the crank shaft and the clutches E and G is substantially as described with reference, to Figure 1. In this instance, however, at the forward end of the part F of the crank shaft and beyond the clutch G there is arranged a variable speed transmission mechanism ll of some suitable type and construction which can be coupled to the part F of the crank shaft by the clutch (i. The driven member of the variable speed mechanism L carries a bevel wheel .\l which gears with a. bevel wheel M mounted on the end of vertically disposed shatting This shafting N at its upper'end drives through gearing a winch H of suitable type. In the length of shafting N there is preferably disposed a safety device N of some known construction which may comprise for example a slipping control and this device serves to prevent dama to the mechanism in the event of an over oad on the winch H. The Variable speed mechanism L is conveniently controlled bv a hand lever L disposed on the deck 0." of the vessel adjacent to the winch H.

The arrangement is such that if the whole engine power is required for propelling purposes the part F of the crank shaft belonging to the engine grou B is coupled to the crank shaft part Cwhic belongs to the main engine grou A by means of the clutch E, the clutch (1 being disconnected. If, however, power is required .for' driving the winch H at the same time that ower is wanted for propulsion the clutch is disconnected and the crank shaft part F is coupled to the variable speed mechanism L by means of the clutch G. If desired wer from the main engine group A may a sohe used for operating the winch if the portions 0 'and F of the crank shaft are con led by the clutch E and if the blades of t e propeller J are adjusted so as to reduce or el minate the propulsive effort.

The mechanism by meansof which the winch H is operated may vary in accordance with requirements as also the position in which this winch is disposed with relation to the engine.

C -'lindeis grouped and operating on a divided crank shaft in the manner described may be utilized in various ways and for arious purposes.

What we claim as our invention and desire to secure by Letters Patent is 1. In wer apparatus for use on vessels, in combination, an internal combustion engine comprising a plurality of cylinders ar-' ranged in groups. a crank shaft divided in accordance with the gr ders,

forming means at the opposite ends of the crank shaft by eit er work performing means or any fraction thereof utilized by either such means.

2. In power apparatus for use on vessels, in combination, an internal combustion engimcomprising a plurality of cylinders arranged in groups, a crank shaft divided in accordance with the grouping of the cylinders, means for detachably coupling the sections of the crank shaft together, a propel- 8 ler at one end of the crank shaft and a rotatable work shaft at the other end of the crank shaft mechanism associated with the propellcr and mechanism rotatable shaft of work performed by each may be varied or ren-

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