US108800A - Improvement in shipping and unshipping screw-propellers - Google Patents

Description

2 Sheets-.Sheet 1.

G. LEAOH. SHIPPING AND UNSHIPPING SCREW PROPBLLERS. No, 108,800.

Patented Nov. 1, 18070.

2 Sheets-Sheet 2.

G. LEACH.

SHIPPING AND UNSHIPPING SCREW PROPBLLBRS.

No. 108,800. Patented Nov. 1, 10870.

anni sulla @anni ditto,

The Schedule referred to In these Letters yPatent: and making pa'rt of the same.

To all wlmm it may concern Be it known that I, GEORGE LEACH, of Leeds,

in the county of York, England, have invented new and useful Improvements i u the Mode of-aud Appai .ratus for Shipping and Uushipping Auxiliary Sore-wlropellers while in deep water and do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art tomake and use the saine, reference being had to the accompanying drawing forming part of my specification. Y

The object of this invention is to facilita-te the shipping audunshipping of the auxiliary screw-propellers used with or adapted to sailing-ships, for the purpose of 'assisting them in eahnsand other occasions when their sailing-gear is either useless or insutcicnt.

Heretofore the auxiliary screw-propellers adapted to sailing-ships vcouldonly be shipped and-uushipped with diliiculty, great labor, and loss of time, accompanied with some danger to the crew of the vessel while carrying on the operation.

This unshipping operation is absolutely necessary when there is a fair wind, as auxiliary propellers under such circumstances are not required lto he used, and they would then be an incumbrance.

It is of importance, therefore, on the one hand, that auxiliary propelleis should he capable of being removed easily and quickly whernnot wanted for use,

so as not to interfere with the sailiru;` qualities of the ship, and it is, on the other hand, important that they should be so arranged as to be available for use, without difficulty ormuch loss of time, when required.

In carrying ont my invention, I prefer to employ twin propellers, or one propeller under eac-l1 qua-rter, and I adapt vand'secure the propeller to thc shaft in such a manner that it can he easily detached therefrom, and brought on board, and stowedaway untill 'again required.

' To this end I aiiix to the'outcrfor after end of the 'boss of the propeller a ballfand-socket joint, and I attach to the ball of the socket a rope or chain, whereby the propeller,l when detached from the shaft, may

be hauled up on hoard.

In the accompanying drawing-- Figure 1, sheet 1, represents a side view of the propeller in place ready for use..

Figure 2 is a longitudinal section of'the same, rep rcsenting the propeller unshipped, and being hauled up on board by means of the rope e.

Figure 2 is a sectional side view of the propeller,

showing tty on the shaft.

Figure 3 is a detaohedview of the'v end of sleeve shaft f, showing1r clutch g. Figure 4 is a detail side and face view of the-comi pound jam-nut 1f.

Figure 5 is a detail sectional view of the'front part of hollow shaft and wire rope,

Figures 6 and 6 are detail. sectional side views .of the wire rope d.

Figures 7 and 8, shcet`2, are'side views of a modification of my invention, showing the parts in different positions.

Figure 9 is a top and side view, on an enlarged scale, -of the knuckle-joint used in the modification.

Similar letters of reference indicate corresponding parts.

The boss c of thepropeller, and also the propeller-7 shaft, are shownin section in iig. 2, and also in some of the detached figures.

Through the central part of the propeller-boss a a taper hole is formed, as shown in fig. 2, to correspond with the taper end b' of the hollow shaft b, on which thi" propeller isl intended to -be 4mount-ed .when in usc.

This taper hole is enlarged and extended, at the front or leading end of the boss', into a trumpet# mouthed shape, for thepurpose 'of facilitating the entrance of the taper end b of the shaft l, and guiding it into the boss a.

'In the after or outer end of taper hole there is a socket, into which: is screwed a plug, o, to which a wire rope, d, or other equivalent device, is secured, and passes out through the trumpet-mouth, and through the hollow shaft b, Yinte the' vessel.

Another rope, e, is attached to a. ball, c', which works in a spherical socket in .a screw secured over the back end of the boss, so that, when the propeller is detached from the shaft b, it may be suspended by the two ropes d and e.

The rope d, o n issuing from the trumpet-mouth *end ofthe boss c, passes, through the hollow shalt b,

to the inside of the vessel, and' is secured there, in

the manner hereafter explained, so that, lby hauling upon this rope cl, the propeller may be drawn upon the taper end of the hollow shaft l), and securely held there, and afterward jammed up tight by the screws or nuts k, or other mechanical devices, placed inside thevessel, as hereafter explained.

The tightening of -the rope d is effected, as 4before mentioned, hy means of the compound jam-nut la.

shown detached and-in pieces in iig. 4.

This nut is composed of a split nut, l 1, which lits on andscrews onto a screw, 2, at the' inner endof the rope d.

The split not l 1 is also threaded externally, to receive the nut 3, which, when screwed onto it, holds the parts 1-1 together, and causes the inner threads of the mit ,to fit and work on th'e screw at th'e end of the rope d. Then, `by screwing up the compound nut la, as shown inthe detached view', iig. 5, the rope d-is drawn l.in and tightened, and the boss a of the propeller is held securely ou the end ofthe hollow shaft 11.

'.lhe propeller-,shaft b,.when inplace, requires to be connected with the. driving-shaftj of the engine, in"v order to work or rotate the propeller.

wTo this end the hollow shaft b is permanent-lyv fixed' in the part t' of a coupling, i z", shown detached at fig. 5, and, when these parts i', Ii' are secured in place by the bolts l l, the propeller-shaft will be con? nected to and made to rotate withthe drivin shaft j.

The wire rope al is' made nearlyto litt-he hollow propeller-shaft b by being serve-d or coated in the ordinary way, or otherwise covered, so that-little orj no water will be admitted, thronglrthe hollow shaft b, into the vessel.

The propeller-shaft his incloscd within a sleeveshaft, f, and the two shafts pass through and are supported by vthe long tubular bearing m, which passes from the inside to the outside of the vessel.'

' In order 'to prevent the propeller from slipping upon the taper end of the inner hollow shaft b when g clutch, n, in

snres the -rotation of the propeller wit-hout allowingthe lattcrto slip on the taper end of thc inner -shaft. T-hen itis desiredto unship the propeller, `the .strain upon the'hauling-rope e must he reiieved, and

the outer shaft f driven ont against the boss a ofthe propeller, so as" to ease ofi the boss rt from the ta-j pcred extremity of the inner shaft b.

This is effected by removing an intermediate shaft which connects the propeller-shaft b'to the drivingshaft j, as'shown in a detached part of, fig. 1, orhy disconnecting the' coupling i i', supposing -that this couples the two shafts b and j directly.

The shafts b and f may then be pushed fmward in their long tubular hearing qu, and access to th tightening-nuts k.

It will be seep that the` parts 13 i.' are connected together by means of the hinged bolts l l, which drop into notches in the flange of the part il of the coupling,`

andare heid secnite by the tightening-nuts at their ends.

- It will onlyfthcrethre, be necessaryto loosen the Anuts of the hingedbolts l l, and throwback the lat-4 ter, and the two parts i 'l' of the .coupling may then be drawn asunder, and access obtaincdto the inner en d of the rope'd, which'issuitaly secured in the tubular or bored-out end cfa coupling device, d", the other end of which has a screw-hole, d', tapped thereon, as shown in thedetached views, figs. i and f.

By this device an additional length of' 4rope, d, maybe temporarily connected to the end iof rope d.

When the additional rope d* is` thus connected withjthe rope d, the' tightening-nut l.; may be loosened and removed from the rope d'; then, upon turning the nut n, which works upon a screw on the end of the sleeve-shaft j, the latter will he moved forward on thcV shaft b, and will ease the boss of the propeller on' the taper end of the shaft. l. and allhw it to behauled up bythe'ropc e.

The ball-and-sooket rope c' 'will then suicc to haul np the propeller on deck, where it may be detached from the rope d, which has been d rawuthrough the .hollow propeller-shafts b from the interior of the vessel.

The end-of the rope d must then vbe secured ou boauhready to be connected with the propeller again.

mason when itfmay be' required t-o-reshp the latter. on its shaft.

As a modification of the' plan just described, thc propeller may be secured, in any convenient manner, to "a solid shaft, which is capable of being slidden in and out through thesstufiing-box or tubular bearing on, as shown at figs. 7 and 8, sheet 2. l

This solid propeller-shaft b must he provided with a knuckle-joint, so constructed that it will not exceed the in and out of the stufugbox or tubular bearing.

This knuckle-joint is shown detached nponan enlarged scale, in sectional elevation. and plan view, at fi". 9.

DThe hinge or point is made of several thin steel plates, t t t, which are heldin plaee'n the wroughtiron shaft by means of pins or rivet-s.

The propeller is securedy on the end of the shaft by means of a key or collar and a jamnut on the end, as shown at iig. 8, and over this is screwed the balland-socket joint, to which the hauling-rope is secured. asin vthe former inst-ance.

In order to detach the propeller' from the shaft b',

box ortubular bearing, for which purposeau added shaft, b', must be screwed into the'inner end of the propeller-shaft, which may then be pushed out of the tubular bearing until the knnekle-joint `is exposed. The propeller-shaftb, with thepropcller thereon, may then be turned up on this joint, as shown at fig. S, ix order that the propellermay be lifted ont of the water, and detached from the shaft, and stowed away until wanted, when it may'he again secured to thc shaft, and lowered into its place.

When'the propeller has been detached .from the end of the shaft b, the latteris to be loweredlaga-in into its horizontal position bymeans ofthe rope c' and ball-audsocket joint, whiclnwhen' the propeller has'heen removed, must be reattaehed'to the end of :the piopeller-sl|aft b.A

The propellereshaft l) may then be drawn in board, through the stuiing-box or tubular bearin g, by means canse an impediment'to the prgress of the vessel through the water.

The added shaft b* may thon bc unscrcwed and re i moved from 'the propeller-shaft. and stowed away until again required for use.

Having nowdescribed my invention of improvemen-ts in the mode of and apparatus for shipping and 'unshipping auxiliary screw-propellers while in deep water," and havingI explained ythe manner f carrying thc same into effect,A

I claim asmy invention- 1. The mo'de, herein set forth, of mounting the propeller on' its shaft so that it can be easily detached therefrom and hauled in board,"or 'adupted'tothe shaft, and secured thereon, as described. v

l2. The combination of thepropeller with the hollow shaft 7), and the ropes d aud'e, and the sleeve shaft f, together with the devices herein set forth, or their equivalents,for holding the propeller securely on the shaft.

3. `A propeller provided with a ball-andsocket joint and hauling-rope to the end of a jointed or hinged shaft, which is capable ot' being moved longitudinally in its bearings, for the purpose of unshippiug the provpell cr,tzss hereinset forth.

In witness whereof, I, the said Gnonen- Lesen, 'have hereunto set my hand the 2d day of August, in

the year of our Lord 1870.

Witnesses: GEO. BEACH.

THOMAS Tonnen,

Solicitor, Leeds. WILLIAM HoMun CowLnY,

Clerk to Messrs. Richardso @t Tu rnc?. Solicitors, L eeds.

diameter of the shaft, and may, therefore, be pushed,

the, latter must be' pushed out through the stniing of the added shaft b, so that nothing. may project' outside beyond the stuing-box or tubular bearing, and

Images