US1246968A - Detachable means for life-boats. - Google Patents

Description

1. A. MCNABB DETACHABLE mms FOR LIFE sous."

APPLICATION min mus-a. 1917.

' rateim d'mi. "20,

ments in Detachable Means for Life-Boats,

run s'ra'rns mm cur os.

JOHN All-EXANDER MGNABB, OF COLLINGWOOD, ONTARIO, CANADA, ASSIGNOR OF ONE I I THIRD T0 GEORGE TINEGATE, OF GOLLINGWOOD, ONTARIQ-CANADA,

DETACHABLE MEANS FOR LIFE-BOATS.

Specification of Letters Patent. A

Application filed June 2,1917. Serial at. 173,628.

of Simcoe, Province of Ontario, Canada, a subject of the King of Great Britain, have invented certain new and useful Improveof which the following is a specification.

My invention relates to improvements in detachable means for life boats, andrelates more particularly to that type of detachable means wherein the coupling means coupling cipal object of my invention isto provide;

the boat at each end to the davits' are simultaneously released by a lever mechanism which is operated amidships, and the prinemergency coupling means so that in case it be impossible to uncouple the life boat from the tackle carried by'the davits, by the op eration of the lever mechanism hereinafter described or its equivalent, either or both ends of thelife boat may readily uncoupled by hand. Another object of my'invention is to provide ajvery simple lock for the actuating lever. p

The preferred construction of my inven tion will be hereinafter particularly set forth, and what I claim as new will be pointed out in the claims forming part of i this specification.

Figure 1 is a vertlcal central longitudinal section through a life boat, showingmy detachable means in side elevation, certain parts being cut away to illustrate internal construction. Fig. 2 is an end elevation of one of the standards carrying the coupling means. Fig. 3is an elevation of the actuating lever and the locking means therefor,

and Fig. 4 is a side elevation of the coupling means carried bythe upper ends of the standard illustrated in Fig. 2, showing the emergency uncoupling means knocked down. I I

In the drawings, like. characters of reference refer to the same parts. 4

I have found from actualpractice that during stormy and cold weather on the Great Lakes, ice is apt to form on the tackle and coupling means, whereby said tackle is coupled to the life boats, and the consequence is that it hasbeen found impossible to readily uncouple the'life boat from the davits under such circumstances, and therefore some emergency uncoupling means must be provided so that both ends of the life boat may be readily uncoupledunder the circumstances just noted, andv by the occupants ofthe boat. i

The improvements herein described and hereinafter pointed out in the claims, I

have made in the invention patented to my- Patented Nov. 20, iei'r.

self and the late Gilbert Emery on July-25,

1916 under Number1,192,54l3.

A, is the boat and mounted at each end thereof is a suitable standard preferably formed of two upright members B, spaced apart. The upper ortions ofthese upright .members are coup edtogether by the tie bolts C, and the lower ends of the said members are, preferably coupled together by the relationship, in respect. of the members B,

byany suitable means such as the thimbles -H mounted on said tie-bolts. Each hook is coupled by a link-arm I to a bell-crank lever J, which is pivoted on a tie-member K held in the standards B. The said bell-crank levers are held in suitable spaced relationship in respect of the-members B, by anysuitable means such as the thimbles L. Each bellcranklever is coupled by a connecting rod 3 M with the actuating lever N which is positioned amidships. This actuating lever N is pivoted on the tie-member O mounted in the members P of the standard Q, and is suitably held in spaced relationship in re-' s set of said members, as will be understood. s hereinafter particularly described, the

actuating lever N is unlocked, and by moving it in the direction indicated by arrow in Fig. 1, the hooks G are disengagedfrom the coupling members? carried by the block and tackle 3, (only partly shown) which are coupled to the davits, not-shwon. When the hooks G and their supporting parts are not coated with ice, they can readily be moved to disengage the lifeboat, as described. When they are coated witli ice, hey cannot be moved readily, and to overome this disadvantage, I have provided each hook G with what I may term a keeper,

,which performs the function of an emen gency uncoupling means; These keepers t formed in the sides 5, and through holes 11 for the end standards which may be used if '(shown by dotted lines in Figs. 4: and 2) formed in the members B. Should it be impossible, for any reason whatsoever, to move the hooks G touncouple the boat, the pins 9 can be readily knocked out of position and thus permit the keepers 4 to be. knocked down into the position illustrated in Fig. 4, thus allowing fo the ready disengagement of the coupling members 2 from the hooks G.

The split-pins 9 or their equivalents, are coupled to the boat by any suitable means such as the chain '12. 13 are suitable braces desired.

P'ivoted to the lever N by the pin 14 is a latch 15, the nose 16 of which normally rests in the slot 17 (shown by dotted lines in Fig. 3) formed in the thwart 18. The side members 19 of the latch are spaced apart, and between them passes the lever N. 20' is a lug or bar carried'bythe side members 19 of the latch 15, and against this lug or bar, the spring 21 rests. This spring is carried by the lever N, and its function is to maintain the nose 16 in the slot 17. Any. suitable means may be employed to keep the latch- 15 coupled to the thwart 18 when desired.

It is only necessary to move the lever N in one direction to uncouple the hooks G, and since the described meansfor locking the said lever to the thwartis very simple,

Gopies of this pat ent may he obtained 101' I have reduced to a minimum any possibility of the actuating lever N jamming.

If desired, I may secure shields 22 to the bottom of the boat, and over the major portionof the length of the connecting rods M. Any suitable turnbuckle 23 or equivalent means may be used on the rods M to provide for adjustment and wear.

The upper portion ofthe lever N rests normally in a slot a formed in the side of the thwart 18.

Ido not confine myself to the construction standards; and means whereby said keepers are locked to maintain them normally in the path of releasing movement of said coupling members;

2. The combination with a boat; standards supported one at each end thereof, and each composed of two upriggit members spaced apart; a hook pivoted etween said upright members and having its free end normally extending above the top of itsassociated standard; a keepersubstantially U- shaped in form, pivoted to said uprights at the upper end of each ofsaid standards, said keepers normally designed to project above said standards and over the free ends of may be locked against movement.

JOHN ALEXANDER MoNABB.

five cents each, by addressing the commissioner of Patents. Washington, JD. 9. v

.said hooks, and means whereby said keepers

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