US2352360A

US2352360A - Plywood lifeboat

Info

Publication number: US2352360A
Application number: US509464A
Authority: US
Inventors: Ludwig S Baier
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-11-08
Filing date: 1943-11-08
Publication date: 1944-06-27
Anticipated expiration: 1961-06-27

Description

L. S. BAIER PLYWOOD LIFE BOAT Filed NOV. 8, 1945 June 27, 1944.

Patented June 27, 1944 UNITED STATES PATENT OFFICE 2,352,360 l PLYWOOD LIFEBOAT Ludwig S. Baier, Portland, Oreg.

Application November 8, 1943, Serial No. 509,464

6 Claims.

My invention, which relates to the art of boat ltjuildinghas particular reference to life boats.

1 Primarily, the invention has for its object to provide alight-weight, strong and relatively inexpensiVe-to-build life boat to carry a maximum number of persons. Again it is an object to provide a life boat employing a minimum amount of metal in its hull construction'.

' Other objects will in part be obvious and in part be pointed out hereinafter. @To the attainment of the aforesaid objects and Iends the invention still further resides in the novel details ofconstruction, combination and arrangement of parts, all of which will be first fully `described in the following detailed description,

In the drawing, in which like numerals and letters of reference indicate like parts in all the figures, I is the stem iron which comprises a body having anges 2 and which extends from the sheer to the keel. The stem iron has its flanges widened adjacent its upper end as at 3 for a purpose presently understood.

A pair of spaced metal plates 4 are welded, as at w, to the stem iron I. A pin 46 passes through these plates 4 and through the shell and through the widened portions 3 of the stem iron, the pin being riveted over at its ends. Spacer pipes 45 are located on the pin between the plates 4 and the portions 3. The spacers 45 also serve as braces for the plates 4.

Pivoted on the pin 46 is the hook 53 that holds the boat-lowering tackle link 51 while lowering the boat from the deck of a ship, of which more will be said later.

The stern post 5, like the stem iron I, is made of metal with flanges 6 land widened portions l. Spaced plates 8 Iare also welded at w to the stern post 5, there being a pin 46 and spacers 45 employed as at the stem of the boat. Pivoted on the pin of the stern-disengaging-apparatus is a 55 hook 53 for the `aft link of the boat lowering tackle.

Both fore and aft, between the plates 4-4 and 8 8, is pivoted at 55 a weighted latch 55 which normally engages the pivoted vhook l53, a stop in 54 serving to hold the hook 53 vagainst, turning in one direction behind a predetermined position (see Fig. 3). An eye bolt 4'I passesthrough each `pair of plates 4 and 8 andv carries `a spacer 52'between the plates.

-A pulley 5I is mounted on veach eye bolt, over oak and the keelson I I is preferably made of Ziir.

The keel I0 iand keelson II', and the'plywood shell I2 are secured together by bolts I9, a waterproof cement being applied to all faying surfaces.

Disengaging cables, indicated by dotted lines 49 in Figs. lA-lB, pass through guides 48; at the aft end of the boat the fore and aft cables 49 are connected to a pull member 50. By pulling on member 50 the tiller man can release the fore and aft hooks 53 to free the boat from the launching tackle. It will be seen by reference to Figs. 141B that the releasing gear is rigidly mounted directly on the stem and stern irons. Thus the weight of the boat as it hangs from the suspending tackle, including the load, is carried by the stem and stern irons, which stem and stern irons actually serve as two hooks that cradle the load, extending to the ends of the keel.

BI designates a steel liner and 52 a steel keelguard at the bow end of the boat. At the stern `end of the boat a stern plate 63 is welded to the stern post 5 and set into the keel IIJ to which it is riveted and bolted at I9.

In Fig. 4 I have shown horizontally disposed gusset plates 45x welded to the plates 3 land the p1ates 4 (or 8 as the case may be), in lieu of the pipes 45 and the extensions of the pins 46.

The general construction of the boat may be that disclosed in my application led June 1, 1942, Serial No. 445,327, now Patent No. 2,341,010, of which the present application is continuation in part.

The construction of the stem and stern of the boat constitutes the claimed subject matter of the present application, while the seam construction constitutes the claimed subject matter of my original application aforesaid.

The stem and stern construction herein cle-- scribed enables the plywood shell to be directly fastened to the posts and the releasing tackle being welded and braced to the stem and stern posts strengthens these posts so that thin sheet metal may be used in the construction of the posts.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the construction and advantages of the invention will -be clear to those skilled in the art.

What I claim is:

1. In a life boat having a keel and keelson, solid wood frames and a plywood shell; metal stem and stern posts secured to the fore and aft ends respectively of the shell and extending down to the keel, said stem and stern posts having side anges of increased width at their upper ends,

pairs of parallel plates integrally secured to the' solid wood frames and a plywood shell; metal stem and stern posts secured to the fore and aft ends respectively of the shell and extending down to the keel, said stem and stern posts havingV side flanges of increased width lat their upper ends, pairs of parallel plates integrally secured to the stem and stern posts and spaced apart at the midplane of the boat, spacers between said plates and said upper ends, pins passing through said spacers, said plates, the shell and said upper ends and having their outer ends riveted over, thereby strengthening the prow and stern of the boat, lowering tackle engaging hooks pvoted between the plates of each pair, a hook latch also pivoted between the plates of each pair to hold the hook, and hook-releasing tackle connected with the fore and aft latches and operable by one person for releasing the fore and aft latches simultaneously.

3. The life boat of claim 1 wherein a stern plate is welded to the stern post.

4. In a life boat having a keel and keelson, solid wood frames and a plywood shell; metal stem. and stern posts secured to the fore and aft ends respectively of the shell and extending down to the keel, said stem and stern posts having side flanges of increased width at their upper ends, pairs of parallel plates integrally secured to the stem and stern posts and spaced apart at the Inid-plane of the boat, spacers Ibetween said plates and said upper ends, thereby strengthening the prow and stern of the boat.

5. In a life boat having a keel and keelson, solid wood frames and a plywood shell; metal stem and stern posts secured to the fore and aft ends respectively of the shell and extending downto the keel, said stem and stern posts having side flanges of increased width at their upper ends, pairs of parallel plates integrally secured to the stem and stern posts and spaced apart at the midplane of the boat, and gusset plates connecting said parallel plates with said side flanges, thereby strengthening the prow and stern of theb'oat.

6. In a life boat having a wooden keel and keelson, solid wood frames and a plywood shell; `metal stern and stern posts secured to the fore and aft ends respectively of the shell and extending down the keel, the stem post iron extending over ,the bow end of the keel; and a metal keel guardlat the bow end of the boat underlying the keel and the portion of the stern post iron in advance of the keel. ,I