US1293169A - Torpedo-guard. - Google Patents

Description

l. F. NEWSOFV'.

TORFEDO GUARD.

APPucATmN FILED luLY 5,1911.

1,293,169. mama Feb. 4,1919.

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1. F. NEWSOIVI.

ToRPEDo GUARD. APPLICATION FILED JULY 5. 19H-V .Patented Feb. 4, 1919.

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l. F. NEWSOM.

TORPEDO GUARD.

APPLlcATloN FILED 1uLY5. |917.

Patented F@b.4,1919.

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JOHN'F. NEWSOM, 0F FRANCISCO, CALIFORNIA.

TDRPEDO-GUARD.

Specication of Letters Patent.

Patented Feb. 4, 1919.

`Application led July 5, 1917. Serial No. 178,638.

To all whom t may concern:

Be it known that I, JOHN F. NnwsoM, a citizen of the United States, residing at the city and county'of San Francisco and State of California, have invented new and useful Improvements in Torpedo-Guards, `of which the following is a specification.

Y This invention relates to' a torpedo guard for vessels that is positioned-a suitable distance from the hull of a vessel when it is in the danger zone, and that is nested adjacent the hull ofthe vessel when it is outside of the danger zone.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying` drawings, in which igure 1 is an end elevation in section of one side of a vessel showing the application of the invention.

Fig. 2 is a similar view showing the guard nested against the side ofthe vessel.l

Fig.Y 3 is a cross sectionon line 3-3 o'f Fi 1.

ig. 4 is a plan view partly 4in section of the inner pivotally mountedend of the arm.

Fig. 5 is a plan section of one side of the vessel showing Vthe guards in nested position.

Fig. 6 is an end view similar to Fig. l showing a modification of the structure employed.

Fig. 7 isa View similar to Fig. 2 showing the guard in nested position.

Fig. 8 is a'detail sectional view of the inner end of the arm showing the worm gear drive.

Referringto the drawings in detail A indicates in general, the deck kof a vessel, and 2 one of the sides. Pivotally secured, as at 3, in a hearing bracket 4 permanentlysecured to the side of the vessel is a boomor arm 5. There are a suitable number of arms 5 arranged along'each side of the vessel and the arms are arranged in pairs, eachV pair being p shaft nentlv secured alongl the bilge line Fig. 9 is aside elevationofthe traveling head.

arranged to support or carry a guard member generally indicated at B. Referring to Fig. 4, itwill be seen that each arm is carried in bearing bushings 6, and that extending through each pair of bearing bushings is a shaft 7 upon which is secured a worm gear 8. By referring to the same figure, and also to Fig. 3, it will be seen that each arm is hollow and approximately rectangular in cross-section to form a guide Vfor a traveling head 9. Journaled in each arm and extending through each traveling head is a screw- 10 on the inner end of which is secured a worm wheel 11. This worm wheel remains in constant mesh with the worm gear 3, and when turned by same serves as a means for moving the traveling head in and out on the guides formed in the arm, as will hereinafter be describe i Arranged on one side of each bearing bracket 4 shaft 12, 'which extends up tothe deck of the vessel. This shaft may be provided 4with a hand-wheel or may be turned by any other suitable means.

Secured on the lower end of said shaft is bevel gear 13, and inter-meshing with said gear is a second bevel gear 14 which is secured on the outer end of shaft 7 theshaft 12 and the Vgears 13-14 serving as means for turning the screw-shaft 10. Permaof the vessel is a trough-shaped supporting shelf 15, which is adapted to support the guards when they are nested against the sideV of the vessel, as shown in Figs. 2 and '5, and connected withv the lower end of each guard for the purpose'of swinging it inwardly into the trough is a cable 16. 4There are a pair of I these cables one bein secured to each end of the guard as shown at 17. Each cable passes from the point of attachment shown.' over a shive 18 and passes from this point up to a winding drum, or other tackle, carried on deck. The cable 16 assumes the dotted line position shown, at 16a when the guards are to be 'swung inwardly, but under normal conditions assumes thefull line posiand journaled in bearings is a tion shown at 16 when the guards are hanging in guarding position. This is accompllshed by securing a pair of shives 19 and 20 to each arm 5. A cable 21 operated from the deck of the vessel, and carrying the floating block 22 permits the cable 16 to be pulled up4 into alinement with the arms 5. This is accomplished by passing the cable 21 through the floating block 22, and then over the shives 20 and 19. The end of the cable 21 carries a loop 23 through which -the ca ble 16 passes, and then through a loop n2li carried by the floating block. It is therefore possible to raise the cable 1G or lower the same by means of the cable 221.

Each guard employed consists of a hollow caisson which is pivotaclly supported as at 251 between a pair of traveling heads 9. The caissons may'beuconstructed of stoel or other suitable material, and the -niiain plates forming same are spaced apart a suflicient distance to form a. comparatively large chamber; Each caisson may therefore be provided with loading openings 25, or man:-v

holes, at the top, winch are water tight and the chambers formed 1ny the guards can in this manner be loaded with grain, or other freight.

Secured tothe outer end of each arm 5 is a cable '26. Each cable passes upwardly to the winding drum of a winch '54 carried by the shi-p and this drum is preferably constructed so that a certain freedom of'move ment'aboutits driving shaft is permitted;

this winch being more particularly described in my eo-.pending` application entitled Tor- .ed'o and mine guard for vessels, filed July 5th, '19717, Serial No. '17 8,637 In this manner a ,resilient movement between each arm and thesupporting cables, or the winch to which they are attached, is permitted. This is of great importance when the ship is at sea, particularly during rough weather as the sea encountered and the rolling of the ship necessitates a certain freedom of movement of the supporting arms. A structure too rigid would under such conditions break or bev carried away while the resilient mounting hereshown takes care of such stresses, thereby saving the supporting structure against destruction.

In operation with ythe guards lowered into guarding-position as shown in Fig. 1, if it desiredto. raise and nest the same against the vessels side, it is first necessary to pay out on the cables 21 to perm-it the. main cable 16 to 'be lowered into the position shown at 16e. The winch` carrying thepeables 26 may then be started to partly raise the arms 5 about` their inner pivotal connections and a pull may also be exerted supporting shelf 15. A continued movement may then be imparted through the screwshafts 10 until the traveling heads reach their innermost positions. Each guard will during said movement drop into the trough or shelf 15 and the arms may in this .position be swung completely up against the side of the vessel aszshownA in Fig. 2.

The several movements described take place partly in unison and partly independent of each other.

By referring to Fig. 5v it willl. be seen that a horizontal cross-section of a guard; mem.- ber shows a stream-'line shape. This `is nec-V essary to reduce resistancetozthe.smallest degree possible when the guards are .extended to guard-ing position, and `it isalso of advantage when the guards are nested against the side of the vessel, as shown in Fig. 5. The spaces indicated at 30 betweenueach guard section when nested are preferably covered with a filling plate 51 having an exterior contour conforming` to the streainline shape of the guards, in this4 manner preventing water fromentering between the guards and exerting a destructive action when in a heavy sea. p similar to the side of thev vesseltis presented when the guards. are nested, and as each guard may serve as a freight carrier, it can readily' be seen that the freighting capacity of the vesseli's ratherinereased while change in the speed of the vessel will hardly be noticed.

The provision ofthe traveling heads 9 and the position ofi-.the supportingshelf 15 is an.- other important feature as it perm-its each guard member to be nested snugly against the side of the vessel without raising the same appreciably above thewater level.'

A modification of the structure shown in i Figs. 1 and 2 is shown in Figs. 6 and 7 The arms 5 employed, are in this instance constructed of two telescopingl sections 40 and` lil.` The outer sectionnserves as a nut and is extended or retracted by a gearing mechanism generally7 indicated at 42, practically identical to the mechanism shown in Figs. l and 2. The arm section l1 really serves thefunction of the travelling head 9 previouslj.v described,but its movement is limited. That is, it cannot possibly be retracted to a position as close to the pivotal connection of the arm as the other structure shown. `The movement .ofthe .guard from extended guarde ing position to .the nested position shown in Fig. 7 therefore necessitates lifting each Practicazllfal smooth: exterior guard a comparatively greater distance and lgher out of the water to place it in the Y supporting shelf shown. By referring to the guard shown in Figs 6 and 7 it will be seen that the lower part of the chamber formed is iilled with concrete or other ballasting material, which can be permanently secured therein. This ballasting material is placed therein for the purpose of counteracting any downward thrust or tilting action imparted while the guards are submerged; the ballast being heavierin the rear end than in the front of the guard tends to counterbalance or offset any tilting thrust imparted.

The guard shown in Figs. 6 and 7 when raised is preferably swung in an inward direction by means of a pair of cables 50. These cables are attached to each end of the caisson, as shown at 51. The cables then pass over shives 52 then up over a pair of shives 53 and from this point pass over a drum carried by the winch 54. A pull exerted on the cables 26 and 50 causes the arms to be raised, and also the lower end of the caisson to be swung inward into a position where it may be dropped directly into the trough-shaped supporting shelf; both sets of cables being relied on to lift the caisson, and the arms when it is swung into nesting position.

The cables 50 may also be attached to the preferred form of the structure shown in the remaining figures of the drawings, but it is in this instance only illustrated in connection with the modification.

Having thus described my invention what Y I claim and desire to secure by Letters Patent isl. A torpedo guard comprising a guard member, means on a vessel for raising and lowering said guardmember and a supporting shelf comprising a trough secured to the vessel adapted to engage a portion of the guard member and means for forcing the engaging portion of said guard member into -said trough Yand holding the same therein.

2. A torpedo guard comprising a guard member, means on a vessel for raising and ,lowering said guard member, a supporting shelf secured to the vessel having a trough formed therein adapted to engage the lower end of the guard member and support the same and means engaging the guard member to hold the samepositively against displacement fromsaid trough.

3. A torpedo guard comprising a pair of arms pivotally mounted on a vessels side, a screw shaft journaled in each arm, a guide on each arm, (a traveling head slidably mounted in eachV guide through which the screw shafts pass, means for revolving said shafts to move the traveling heads in Vand out on the arms, and a guard member carried by and pivotally mounted between the traveling heads. i

4. A torpedo guard comprising a pair of arms pivotally mounted on a vessels side, a screw shaft journaled in each arm, a guide on each arm, a traveling head slidably mounted in each guideV through which the screw shafts pass, means for revolving said shafts Vto move the traveling heads in and out on the arms, a guard member carried by and pivotally mounted between the traveling heads, a trough shaped supporting shelf secured to the side of the vessel, means for raising the arms up against the side of the vessel, to raise the guard up into the trough, and means attached to the lower end of the guard to swing the end into the trough while itis being raised.

5. A torpedo guard comprising a pair of arms pivotally mounted on a vessels side, a screw shaft journaled in each arm, a guide on each arm, a traveling headV slidably mounted in each guide through .which the screw shafts pass, a shaft extending through each pivot connection, a pair of intermeshing worm gears connecting said shafts and the screw shafts, a shaft journaled on the vessels side provided with means for turning same, gears connecting said shafts with the shaft passing through the pivot connections to permit turning movement to be transmitted to the screw shafts, a guard member carried by and pivotally mounted between the traveling heads, means for raising and lowering the arms in unison to swing the guards into guarding position, or against the vessels side, a trough shaped supporting shelf adapted to receive the lower end of the guard when swung in against the'side, and means'for securing the guard against removal from the trough.

6. A torpedo guard comprising a pair of arms pivotally mounted on a vessels side, a screw shaft journaled in each arm, a guide on each arm, a traveling head slidably mounted in each guide through which the screw shafts pass, a shaft extending through each pivot connection, a pair of intermeshing worm gears connecting said shafts and the screw shafts, a shaft journaled on the vessels side provided with means for turn ing same, gears connecting said shafts with the shaft passing through the pivot con nections to permit turning movement to be transmitted to the screw shafts, a guard member carried by and pivotally mounted between the traveling heads, means for raising and` lowering the arms in unison to swing the guards into guarding position, or against the vessels side, a trough shaped supporting shelf adapted to receive the lower end of the guard when swung in against the side, means for securing the guard against removal from the trough, said means also adapted to ewngthe lower end In testimony whereof I have hereunto set withln the trough Whlle belng rinsed by the `my hand 1n Ythe presence o'tWo subsemblng arms, means for llmltmg the outward sWlng- Wltnesses.

ing movement of the guard when extended JOHN F. NEWSOM. and lowered to guarding position, and :t Witnesses: resilient Winding member to which said J oHN H. HERRING.,

means is secured. JOHN B. NEWsoM,

envien ot this;` patent may be obtained for fwe cents each, by addressing-the. Commissioner of Raums;

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