US1281370A - Boat-detaching apparatus. - Google Patents

Description

H. B. HILLS. BOAT DETACHING APPARATUS.

APPLICATION FILED JUNE 23. I917.

Patented Oct. 15, 1918 2 SHEETS-SHEET l msmm,

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H. B HILLS.

BOAT-DETACHING APPARA-TUS.

APPLICATION FILED JUN E23. I917.

LQSLE'YQD V Patented Oct-15,1918.

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HARRY B. HILLS, OF RIVERTON, NEW JERSEY, ASS IGNOR TO STEWARD DAVIT & EQUIP- MENT CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

BOAT-DETACHING APPARATUS.

Specification of Letters Patent.

rate-ates Oct. is, was.

Application filed 'June 23, 1917. Serial No. 176,477.

To all whom it may concern:

Be it, known that I, HARRY B. HILLs, a citizen of the, United States of America, residing in River-ton, in the county of Burlington, in the State of' New Jersey, have invented certain new and useful Improvements in Boat-Detaching Apparatus, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My present invention consists in improved boat detaching means, e. means for releasablysecuring boats to ships davits, and the primary object of the invention is to provide simple and eifective apparatus for the purpose which will be .positive in operation, and will insure the simultaneous release of the two ends ofthe; boat regardlessof whether the boat is in contact with the water or not, and is but little apt to get out of order during comparatively long periods of disuse, and is comparatively inexpensive to construct.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed.

hereto and forming a part of this specification. For a better understanding of the invention, however, and the advantages possessed by it, reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described a preferred embodiment of my invention.

Of the drawings:

Figure 1 is a longitudinal section of a ships boat, provided with one form of my improved detaching apparatus.

Fig. 2 is a partial section on the line 22 of Fig. 1.

Fig. 3 is a section on the line 3--3 of Fig. 4. V

Fig. 4 is a view taken similarly to Fig. 1,

but on a larger scale, and showing a portion.

. of the two detaching devices B, which are identical in construction, comprises a body part, which is preferably made of steel plate, bent to form a channel, U shaped in cross section, as shown in Fig. 3. Bolts or rivets C passing through apertures formed for the purpose in the bottom wall of the channel serve to secure the member B to the boat stem, stern post or other portion of the boat structure to which the member is secured. A pin or shaft D having its ends secured in the side walls of the member B, forms a pivoted support for a hook E. The latter, when the boat is in its normal suspended position, engages the link or eye J carried by the corresponding davit block and tackle connection.

The hook E i formed with a locking tail E, which normally lies in the channel between theside walls of the member B, and

ed at each end with a crank pin H to which the corresponding connecting rod G is pivotally connected. Preferably the locking tail is so shaped as indicated at E that it does not tend to cam the locking bolt F out of its normal locking position.

As shown, each connecting rod G comprises an upper yoke portion G, to which the ends of the corresponding bolt F are pivotally secured. Interposed between the'ends of the member G and the outer walls of the member B are washers F surrounding the bolt F, and preventing lateral displacement of the latter. Advantageously friction is reduced, and provision made for compensating for wear by surrounding the bolt F with loose fitting renewable sleeve sections F, F, F. The two sleeve sections F work in the slots B, and sleeve section F which is interposed between the two sections F, is engaged by the locking tail E of the hook E in the normal condition of the apparatus. Each connecting member G also comprises a tubular body portion, which is shown as riveted or otherwise secured at its upper end to the end member G and connected at its lower end. by an adjustable threaded joint to a yoke shaped member G The ends of the cient motion to the connecting 2.0

legs'of the latter are connected by a pivot pin G which passes through a collar of bearing sleeve 1 surrounding the corresponding crank pin H. A collar H secured to the end of each crank pin H holds the corresponding sleeve member I on the crank pin H. At a convenient place, normally in position to be operated by the coxswain, a lever handle H is secured to the shaft H.

In the normal condition of the apparatus, the hooks E of the two detaching devices at the opposite ends of the boat are held in operative engagement with the links J by the bolts Fwhich engage the locking tails E of the hooks E. When it is desired'to disconnect the boat from the davit links J, the shaft movement of t-hecrank pins H gives suflirods G to .carry the bolts F clear of the loc ing tails E of the hooks E. This permits the hooks E ,to swing up and thereby free the links J.

To prevent the links J from accidentally passing out ofengagement with the hooks E, in case the supporting tension on the links J is released, I may advantageously provide.

each detaching device with a pivoted keeper L as shown. Each keeper L comprises a port on passing through and rotatably mounted in the side'walls of the corresponding memberB, and an arm portion L which,

is bent to extend into contact with the tip E of the hook E in the normal condition of the apparatus' In this condition the free end of the arm L rests, and isgravity' held against a supporting stud carried by the member B. In this normal condition of the keepers they prevent the links J from being moved out of engagement with the hooks E. When it is desired to disengage the links from the hooks E without turning the latter out of their normal operative position, this may be done by first movin each keeper -L upward, after which the lin s J may be moved down off the hooks E.

The boat detaching apparatus described possesses certa n important practical advan-' tages. In the first place the construction is one which lends itself to the manufacture of all portions of-the apparatus by which the weight of the suspended boat is supported outof rolled orforged metal rather than cast metal. The relatively long leverage through which the locking bolt F acts to hold the hook E inits normal position minianizesthe liability of the apparatus to fail at this point. Furthermore the apparatus can be made at a small labor cost and with a relatively simple shop equipment. The apparatus is highly positive in its action and is of a character to deteriorate relatively slowly under the conditions'of use to 7 which it is exposed and there is small like lihood of the apparatus getting out of order. The inherent strength and compactness of H is rotated, and the consequent angular the detaching device is such that a single style and size may well be used with boats differing greatly in character and loaded weight. This facilitates standardized con- 'struction and reduces the number of devices about a center coinciding with the center ofthe corresponding locking bolt F facilitates the operation of the apparatus in case the detaching device is embedded in ice as may sometimes be the case. By arranging the parts so that the eccentric pins are 'moved slightly past their upper dead centers when the apparatus is. in. its I normal operative condition the possibility of an accidental release of the hooks E is greatly minimized.

With the construction illustrated, the

hooks E may readily be released regardless of whether the weight of the boat is water borne to any extent or not, and if in the water, regardless of whether the davitconnections are subjected to a towing stram or not. i

It will be noted that when, in withdrawing the locking bolt F, the end of the looking tail E passes the pointwhere its contact with the bolt or roller F is tangential, the weights resting on the hook actmg through the end of the tail will exert on the surface of the bolt or roller F a powerful downward thrust which will greatly assist in and insure the complete withdrawal of the bolt, and as'the connection to the crank arms H and shaft His positive, thls action-on either locking bolt will aid in the withdrawal of the other.

If desired to make it practically impossible to release the hooks E until the boat is water borne, this 'may be accomplished by a material deepening of the notch indicated at E ineach lockin tail E.

Having now descr d my invention, what I claim as new and desire to secure by Let ters Patent, is:

11. A davit. connection comprising a merrr ber adapted to be secured to a, boat and formed with achannel slotted guideways-iformed in the side wal s of the-channel, a hook pivoted between the side walls of the channel and having a locking tail, and a locking'me'mber slidingly movable in the slots of the side walls from the position wherein it engages the locking tail to one wherein member does not press the tail backward in I it disengages said tail, the engagement be"- tween the locking tail and the sliding lock-' ing member being such that the locking moving to unlock it.

2. A davit connection comprising a member adapted to be secured to a boat and formed with a channel, slotted guideways formed in side walls of the channel, a hook pivoted between the side walls of the channel and having a locking tail, and a locking formed in the side Walls of the channel, a

hook pivoted between the side walls of the channel and having a locking tail, and a locking member shdingly movable in the slots of the sidewalls from the position wherein it engages the locking tail to one wherein it disengages said tail, in combination with a rock shaft adapted to be secured along the bottom of a boat and having crank pin at its ends, a sleeve on a crank pin and a connecting rod pivotally connected to the sleeve and to the locking member.

4. In combination with davit connections adapted to be secured to the stem and stem of a boat, and, comprisin pivoted hooks and locking devices for ho ding said hooks in operativeposition, a rock shaft adapted to be secured along the bottom of a boat and having crank pins secured to its ends, sleeves secured on sa1d crank pms, and connecting rods pivotally attached to said sleeves and connected to actuate the locking device. a

5. Davit connections adapted to be Se.- cured to the stem and stern of a boat and comprising a member formed into a channel, and having slotted guideways formed in the channel walls, and a hook having a locking tail pivoted in the channel in combination with a rock shaftadapted to be secured along the bottom of a boat and formed with crank arms at its side, sleeves secured onsaid crank arms, connecting rods pivotally secured to said sleeves and looking slide members movable in the slots of the channel and pivotally secured to the connecting rods.

6. Davit connections adapted to be secured to the stem and stern of a boat and comprising a member formed into a channel and having slotted guidewa s formed in the channel walls, and a hoo having a locking tail pivoted in the channel, in combination with a locking device of cylindrical section adapted to move from looking to unlocking position in the slotted guideways, and lock actuating means positively connected to the locking devices at both ends of the boat.

HARRY B. HILLS.

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