US1428335A - Hydroplane-operating mechanism for submarine boats - Google Patents

Description

J'. F. w; KOLVIG. HYDR'OPLANE QPE-RATING MECHANISM FOR SUBMARINE BOATS.

' 1,428,335, PatentedSepti5,1922.

APPLICATION FILED JAN- 12, 1922 a swans-sum 1.

//////////4 7/4 rill/1 v///////A J. F. w. koLvle. HYDROPLANE OPERATING MECHANISM FOR SUBMARINE BOATS.

- APPLICATION FILED JAN. I2, I922.

1,428,335." PatentedSept. 5,1922.

' 4 3SHEETS-SII-IEET 3. J2 5 aoi-rnnnns n. nonvre, or nnrnearonr, oen'nncrronr, nss-rornon'ro lrnnnmgn" Toni-E130 BOAT. COMPANY, on nnrnenronr, CONNECTICUT, a'conronnrion or IMAINE.

nYnnortann-ornnarrne runonnnrsiu ron snnivmn nn roars.-

Application filed January 12, 1922. Serial "No. 528,691.

To all whom it may concern;

Be it known that LdoI-rANNnsF. WV. KoL- VIG, a citizen of the United States, residing.

when submerging or risingby means of hydroplanes. These hydroplanes are pivotally and tiltably mounted to be extended, into operative position, or folded into inoperative position, or to present either face to the action otthe-passing waters to cause the boat to submerge or to rise. Independent mechanisms are usually required and provided for extending and folding, and for tilting such hydroplanes. It is the object of this invention to provide means whereby the several adjustments of the hydroplanes may be effected by a single mechanism, so that the hydroplanes may be extended, or folded, and tilted when extended by a continued manipulation of the same member initially operated to extend the hydroplanes.

"he invention consists of pillow blocks mounted within the boat; cylinders mounted within the pillow blocks and ha'vinga limited rotary movement; plungers mounted within the cylinders to reciprocate therein and to have a limited independent rotary movement; plugs having screwthread conncction with the plungers; hydroplanespivotally connected to the cylinders;-link connections between the hydroplanes and plugs;

stop means to limit the unfolding of the hydroplanes when extended into operative position; clutch means between the hydroplanes and the plungers to insure a firm connection and a positive turning of the hydroplanes with the plungers when the latter are rotated to tilt the hydroplanes to the desired angle to cause the boat to submerge, or to rise, and guide means for. the cylinders and plungers, s0 combined and arranged, as here inatter explained, as to attain the stated object.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a transverse section 01 part of a submarine boat provided with hydroplaneoperating mechanism embodying the invent on, parts being-broken away to show-poi t-lOIlS 1n sect1on and bringout more clearly the relation of the elements, the hydroplanes being folded; Fig. 2 is a detail central longitudmal section on 'a larger scale, the hydroplane being extended, the plug'at the limit of its forward movement, and the plunger at the point in its forward travel to "have'a -combinedlongitudinal and rotary movement. 'nnparted'thereto during the remainder of. 1ts torward travel. Fig. 31s a view similar to Fig. 2 showing theposition of, the parts when the plunger is at the limit of its outward travelin the cylinder and in clutched engagement with the hydroplane. Fig.4 is a transverse section drawn on the line m'a or Fig. 3. Fig. 5 is a; detail horizontal sec tion abouton'the line of Fig. 3. Fig.6

.is a view similar to Fig.- 4 showing the cylinder andplunger turned to tilt the hydroplane into'submerging position. Fig? is a perspective view of the eyunde'r."

In the embodiment oftheinvention illustrated, the pillow blocks 1 are shown mounted upon a plate. or deck2'within'the sides or the superstructure 3015 a submarine boat,

the hull or body of the boat being indicated sired construction best adapted for the particular application of the invention.

A cylinder 5 is mounted in each of the pil low blocks, and'is flanged at its outer end as indicated at 6, and formed with outwardly extending-lugs to which the hydroplane is, pivotally connected in a manner hereinafter explained; Longitudinal slots 8'are formed These:

at 4:. The pillow blocks may ,be of any de i for clearness sake, but Figs. 4 and 5 show their actuallocation on the cylinder and pillow blocks, namely, horizontal. v guide extension'lO is connected to the inner end of each of the cylinders .5 and is formed upon its inner walls at diametrically opposite points with longitudinally disposedv grooves or guide-ways 11, in which lugs 12 are adapted to operate. The hollow guide extension 10 is of less diameter than the cyl-x inder 5, and is secured thereto by meansof a screwthi-ead connection. I

A plunger 1s mounted 1n each of the-Eyl A hollow inders 5 and comprises head 13 and a stem 14, the latter being of a diameter to enter the hollow extension 10, and the head 13 being of a diameter to lit within the cylinder 5. Lugs 12 are formed upon opposite sides of the stem M of the plunger, and are located some distance from the in nor end of the stem, so that when the lugs 12 clear the guide-ways 11, the inner portion of the stem let obtains a bearing within the hollow guide extension 10, thereby assisting materially in retaining the plunger in proper position and preventing its binding within, the cylinder. The stem lei is hollow, and an end portion thereof is formed with internal screwthreads 15, which mesh with corresponding screwthreads 16 formed upon the outer end of a shaft 17, which is mount d inthe hollow guide extension 10, and is formed with an outwardly disposed annular collar 18 entering a corresponding annular groove in the bearing portion of the hollow Xtension 10. The latter is lijtted with a threaded cap 19 which holds the shaft 17 from any longitudinal movement. The scrcwthrezuls l5 and 16 are of high pitch to insure a relatively long movement of the plunger while imparting a comparatively small rotary movement to the shaft 17. The head 13 of the plunger is centrally recessed, and in- Y ternally screwthreaded, as indicated at 20.

This head is likewise formed in its outer side with an annular groove 21 in which. is fitted a yoke ring 22, the latter being provided with the lugs 9, which are oi? a length to operate in the guide-ways 8 of the cylinder and similar guide-ways 23 formed in the sides oi the pillow blocks or casings 1 in position. to register with the guide-ways 8. This yoke is split in order to assemble it, and its parts are held together by bolts or screws 22.

The location oi. the guide-ways S and 28 is immaterial, but, in practice, such guideways will be disposed to be in the plane of the joint formed between the body of the pillow block and its cap plate. For convenience the guide- ways 8 and 23 are shown in Figs. 1, 2, and 8, as being vertically disposed, but in practice they will occupy a horizontal position, as indicated in Figs. 1- and 5, as previously stated.

A plug 24: is provided for each of the plungers and is exteriorly threaded to match the internal screwthreads 20 formed in the recess in the head of the plunger. i l hen the hydroplane is folded against the side of the boat, the plug 2 l occupies a position at the outer end of the recess formed in the head 01 the plunger, as shown most clearly in Fig. 1, but when the hydroplane is extended into operative position and is clutched to the plunger so as to turn therewith, the plug 24 occupies a position at the inner end of the plunger as indicated most clearly in l ig. 3. When. the plunger is traveling outward in the cylinder 5 to em tend the hydroplane into operative position, the plug 24 moves therewith, but when the hydroplane is fully extended into operative position, a continued. outward movement of the plunger is effected simulta- .ncously by a rotary movement thereof, the plunger advancing with reference to the plug 24; by reason 'ot' the serewthread connection between the plug and. plunger. This combined longitudinal and rotary movement of the plunger results in bringing into operation a clutch mechanism between the plunger and hydroplane to insure a positive turning of the hydroplane with the plunger and cylinder. During the outward movement of the plunger within the cylinder 5, the plunger is held troni turning by the lugs 12 traveling in the grade-ways 11, but when the plug 2 reaches the limit of its outward movement with the plunger, the guide lugs 12 clear the guide-ways 1]., and thereby admit of the plunger turning, and, at the same time, continuing to advance to bring the clutch mechanism. between the hydroplane and the 'ilunger into operation. I

The plunger is caused to turn by reason of the screwthread connection 20 between it and the plug 2-4:, and the turning movement is somewhat assisted by the screwtlnread connection between the plunger and the shaft 17. The cylinder 5 ren'iains stationary throughout the forward travel of the plunger by means oi. the lugs 9 operating in the guide- ways 23 and 8. The yoke 22 has relative turning movement on the head of the plun 1:, but moves with the latter to admit of its lugs 9 traveling in the guiderays 8 and 23. The yoke 22, with its lugs 9, constitliitcs holding means to prevent a tation of the cylinder 5 during the combined longitiulinal and rotary movement of the plunger. When the plunger reaches the limit of its liorwaid movement, the yoke ring 22 has advanced to cause its lugs?) to clear the guide-ways 28 ot' the pillow block, or like fixed bearing 1, and register with slots or clearance-ways 25 extending laterally l rom the outer ends of the guide-wavs 23. The laterally extending slots, or clearance-ways 25, project in opposite directions from the guide-ways, as indicated most clearly in Figs. land 6. At the moment the plunger reaches the limit of its forward movement, the clutch between the plunger and hydroplane is completely engaged, and the lugs 9 register with the slots, or clearance-ways 25, hence a continued rotation of the shaft 17 causes the plunger, cylinder, and

hydroplane to turn, whereby the inclination oi the hydroplane may be reversed to admit of the boat submergmg.

The hydroplane is indicated at 26, and

a suitable connection 28. The heelof the arm 27 is broadened and terminates in projections 29 and 30, which are spaced apart.

The projection 30 is, in'efli'ect, a stop, and engages the outer face of the flange end 6 of.

the cylinder 5, thereby limiting the outward and downward movement of the hydroplane when swung into operative position. .The stop 80 relieves all the internal mechanism and the shaft 17 of all strain, and holds the hydroplane when extended against downward thrust upon its upper face. The pro j ection 29 is essentially a clutch element, and

cooperates with a lip 31 projecting outwardly from the head 18 of the plunger, such lip forming the companion clutchelement. The clutch element 29 engages the inner face of the clutch element 31 when the clutch is engaged, as shown most clearly in Fig. 8. The space 32, separating the clutch element 29 from the stop 30, receives the clutch element 31, and it will thus be understood that the clutch element 81 cooperates with both projections 29 and 80 to securea firm connection between the plunger and hydroplane so as to secure a locking effect which, similarly to the lower projection 30, keeps the hydroplane from folding back, and thereby relieves the mechanism vfrom strain. Also, by the pressure exerted, either upwards or downwards, by the water acting on the hydroplane when tilted in anydirec tion, this clutching feature helps to keep the mechanism from any tendency of loosening or rattling, in short, locksit securely in place against folding or extending any further -while the hydroplane is being rotated back andforth within the limiting angles of rise or dive. a

A link 33 forms connecting means between the hydroplane and plunger, and is pivotally connected at its outer end to the heel of the arm 27, and at its inner end to the plug 24. \Vhen the plunger is at the limit of (its inner movement within the cylinder 5, the j hydroplane 26 is folded against the sidefof the boat into shipped position (Fig. 1).

When the hydroplaneis extended into oper-.

ative position, the plunger andthe plug. 2 1 carried thereby, occupy a 'poslt on at the outer or forward end of the cylinder (Figs- The plunger receives; a greater 2 and movement within the cylinder than the plug, this being due to the fact that the plug 24 ceases to move forward when the hydroplane The arm 27 is pivotally connected to the lug 7 by means of' is. fully extended and the stop 30 comesin contact with the outer end ,6 of the cylinder 5. lVhen the plug'241 ceases to move forward, the plunger continues to advance by a combined rotary and longitudinalamove ment to bring the clutch mechanism between the plunger and hydroplaneinto action, and to bring the yoke 22 into positionso that its lugs 9' will register with the lateral slots. or

clearance-ways 25,.thereby releasing the cyl i nder 5 so that the plunge'rand cylinder may turn to tilt thehydroplane to cause the boat to submerge or rise as desired by varying the angle of tilting. These several operations are effected by rotation of the shaft 17 in one direction," as to the right. I

. It should bestated that the parts are so.

disposed that when the hydroplane is initially extendedinto operativeposition, it is tilted so thatits lower .sface-is inclinedupwardly and'forwardly, causing a rising. effect, of the bow, thereby preventing premature submerging" of the boat when driven forward. To cause the boat to submerge, it is". necessary to tilt the hydroplane to cause its upper-face to incline upwardly and rearwardly, whereby the boat is depressed by the action. of the passing waters upon the upper face of the hydroplane. Y

It is to be understood-that the disposition of the guide-ways- 23- controlsthe relative normal positionofthe cylinder; 5' and the hydroplanepivotedthereto, since the lugs 9.

of the yoke 22 travelwin the guide-ways'8 and 23 during the longitudinal movement of the plunger within the cylinder, hence the relativeposition of the hydroplane during, its extending andr'folding movements may be predetermined.- "When the guide-ways 23 extend parallel with the longitudinal. axis of the cylinder, the hydroplane isinclined normally to the horizontal during its folding, and unfolding, with the result that when the hydroplane is extended into operative. position, it is inclined so as to present its lower face tofthe action of the waters when the boat is in forward'movement to prevent premature submergence thereof, and to cause the boat to submerge, it is necessary to tilt the hydroplane to areverse inclination. ,By' inclining the guideways 28 in opposite di rections, it is possible to fold the hydroplane against the side of the boat so that its pivotal axis. is parallel with a longitudinal and horizontal plane, and; when extended into so as to have a risingeife'ct, "as previously 1 stated. By this arrangement, the hydroi plane isadaptedtoi fold squareaga'inst the side of the boat so as to presenta somewhat better appearance. I i V .The shaft 17 has its'oppositeend portions i I reversely screwthreadedv onport'or starboard sides, as indicated most clearly in Fig.1, and maybe operated from any suitable source of 12o operative position, the hydroplane is tilted shaft 17' is rotated, and by reason. of its screwthread connections with the plungers of the oppositely disposed hydroplane mechanisms, the latter are actuated simultaneously by a like movement-to project the i 10, hydroplanes into operative position, to tilt such hyc roplanes, when extended, to the required angle to cause the. boatto submerge, to go level, or to rise, or to fold the hydroplane against the sides of the boat into 15. shipped position.

As shown in Fig. l, the shafts 17 may be connected to turn together, as by 'the coupling 37, shown as auniversal joint.

It will thus beunderstood that the various 2.0,; movements are effected with certainty and in is certain and positive in action, eflicientand reliable in operation, andnot susceptible to derangement or necessitating frequent repairs or. replacements. Moreover, the construction and arrangementare such as to ad- 31)., mit of ready accessto the parts for inspection, adjustment, or other required purpose. Also, if desired, the clearance-ways or slots 23 and 25, in the pillow block, may be encased from'th'e outside by means ofplates or 35. other suitable means, which together with the stufiing'box mentioned would prevent any water entering into the interior of the ship through the mechanism.

' The ends ofthe extension 19 may be pro- 40 vided with stuffing boxes, thereby making the whole mechanism watertight and 'pres sure proof if des1red, so as to enable the use of this mechanism pro ecting through the ships hull into the interior of any part of aaithe ship, in which latter case each pillow block would be provided with a flange, whereby it would be connected to the side of the ship.

Other variations than those suggested may ibe made within the principle of the invention and the scope of the claims following.

lVhat Iclaim is 1. In a submarine boat, folding .and tilting hydroplanes, and operating mechanism- 55.? therefor, including a main member mounted to receive a reciprocating movement when extending or folding the hydroplanes, and a combined longitudinal and rotary movement when reaching th'e'limit of its outward 1" travel.

2. In a submarine boat, folding and tilting hydroplanes, and operating mechanism therefor, including a mam member mounted to receive a reciprocating movement when extending or folding thehydroplanes, and a combined longitudinal and rotary movement when reaching the limit of its outward travel, and a second member connected, with the hydroplane and having screw-thread connection with the main member and adapted to remain stationary during the combined longitudinal and rotary movement of said main member.

In a submarine boat, rotatable members, hydoplanes pivotally supported by the rotatable members, plungers mounted within the rotatable members to reciprocate therein and to receive a combined rotary and longitudinal movement when reaching the limit of their outward travel, members connected with the respective hydroplanes and having screwthread connection with the plungers, and clutch devices between the plungers and hydroplanes brought into active operation during the final outward movement of the hydroplane.

i. In. a submarine boat, members mounted to turn about their longitudinal axes, hydro planes piivotally'supported by said members, means for extending and folding the hydroplanes, and stops connected with the'hydroplanes and adapted to engage the outer ends of the members pivotally SUPPOl'tlDg the hydroplanes;

5. In a submarine boat, rotatable members, hydroplanes pivotally supported by said rotary members, plungers having connection with the respective hydroplanes for extending and folding them, and clutch elements between the plungers and hydroplanes brought into active operation when the plungers are at the limit of their outward movement.

6. In a submarine boat, folding hydroplanes, rotatable members pivotally supporting the hydroplanes, plungers mounted within the members to reciprocate therein and having a combined longitudinal and rotary movement at the outward limit of their travel, and members having link connection with the hydroplanes and screwthread connection with the respective plungers and held stationary when the hydroplanes are extended into operative position and during the combined longitudinal and rotary movement of the plungers.

7. In a submarine boat, folding hydroplanes, rotatable members pivotally supporting the hydroplanes, plungers mounted within the members to reciprocate therein and having a combined longitudinal and rotary movement at the outward limit of their 1 travel, members having link connection with the respective plungers, and held stationary when the hydroplanes are extended into operative position and during the combined longitudinal and rotary movement of the plungers, and cooperating clutch elements having connection with the hydroplanes and plungers and brought into active engagement during the final outward movement of the plungers.

8. In a submarine boat, folding hydroplanes having stop and clutch elements associated therewith, rotatable members havmovement and a combined longitudinal and rotary movement, plugs having screwthread connection with the plungers and link con nection with the hydroplanes, and means for holding the rotatable supports stationary during the longitudinal movement of the plungers and releasing the rotatable supports when the plungers are at the limit of their outward movement to admit of the plungers and rotatable supports turning about a longitudinal axis to tilt the hydro planes.

10. In a submarine boat, folding and tilting hydroplanes, rotary supports therefor, plungers having connection with the respective hydroplanes and adapted to receive reciprocating movement and a combined longitudinal and rotary movement when reaching the limit of their forward travel, and holding means movable with the plungers to prevent rotation of the said rotary supports during the reciprocating movements of the plungers and adapted to release the supports when the plungers are at the limit of their forward travel to admit of the said supports turning to tilt the hydroplanes.

11. In a submarine boat, folding and tilting hydroplanes, rotary supports therefor, plungers having connection with the respec tive hydroplanes and adapted to reciprocate within the supports and to receive a combined rotary and longitudinal movement when reaching the limit of their outward travel, guide means between the plungers and rotary supports, and holding means movable with the plungers and acting to prevent rotation of the rotary supports dur-- ing the reciprocating 'inovenients of the lun ers and ada ted to release the su orts when the plungers are at the limit of their forward travel to admit of the supports turning to tilt the hydroplanes.

12. In a submarine boat, folding and tilting hydroplanes, bearings, supports for the hydroplanes rotatably mounted in the bearings, there being correspondin longitudinally disposed guidesways in t e bearings and supports, plungers mounted within the rotary supports and adapted to reciprocate therein and to receive a combined longitudinal and rotary movement when reaching the limit of their forward travel, guide means between the plungers and supports to hold them in predetermined position during the reciprocating movements of the plunbers" and adapted to release, the plungers to admit of their combined longitudinal and rotary movement, and holding means movable with the plungers and operating in the guideways of the supports and bearings and adapted to clear the guide-ways of the bearings when the plungers are atthe limit of i ay their forward travel to admit of the plungers and'supports turning in the hearings to tilt the hydroplanes.

13. In a submarineboat, folding and tilt ing hydroplanes, rotary supports for the hydroplanes and having longitudinal guideways, bearings receiving the rotary supports and provided with guide-ways in coincident position with the guide-ways of the supports, plungers mounted to reciprocate within the supports and having connection with the hydroplanes, guide means between the plungers and rotary supports, and holding means movable with the plungers and adapt ed to operate'in the guide-ways of the'supports and bearings and adapted to clear the guide-ways of the bearings when the plungers are at the limit of their forward travel to admit of the plungers and rotary supports turning to tilt the hydroplanes.

14. In a submarine boat, folding and tilting 7 hydroplanes, rotary supports therefor provided with longitudinal guide-ways registering with the longitudinal guide-ways of the supports, the guide-ways of the bearings having laterally extending clearance-ways at then. forward ends, 'plungers mounted to reciprocate within the rotary supports and;

having connection with the hydroplanes, and holdingmeans movable with theplungers and adapted to operate in the guideways o-f the supports and bearings to prevent turning of the supports during the o. folding and unfolding of the hydroplanes and adapted to register with the clearanceways when the plungers are at the l1m1t of their forwardtravel to admit of the turning ol the rotary supports to tilt the hydroplanes.

15. In a submarine boat, folding and tilting hydroplanes, rotary supports therefor provided with two sets of longitudinally disposed guide-ways, bearings for the rotary supports having guide-ways in co ncldent position with one set of guide-ways of the supports, plungers mounted to reciprocate within the supports and having guide elements cooperating with the remaining guide-ways of the supports, and having connection with the hydroplanes, and holda travel, cooperating guide means between the ing means movable with the plunger-s and adapted to operate in the registering guideways of the supports and bearings when the plungers are at the limit of their forward travel.

16. In a submarine boat, folding and tilting hydroplanes, rotary supports therefor, bearings receiving the supports, said bearings and supports having corresponding guide-ways and the guide-ways of the bearings having laterally extending clearanceways, plungers mounted to reciprocate within the supports and adapted to receive a combined longitudinal and rotary movement when reaching the limit of their forward plungers and rotary supports plugs having connection with the hydroplanes andscrewthread connection with the respective plungers, and holding means movable with the plungers and adapted to operate in the guidaways of the supports and bearings to register with the clearance-ways of the bearings when the plungers are at the limit of their forward travel to admit of the supports turning to tilt the hydroplanes.

17. In a submarine boat, folding and tilt ing hydroplanes, rotary supports therefor, plungers mounted toreciprocate within the supports and adapted to receive a combined rotary and longitudinal movement when reaching the limit of their forward travel, connecting means between the plungers and hydroplanes, and a single shaft having screwthread connection with the plungers and adapted to effect a simultaneous movement thereof to fold or unfold the hydroplanes and to tilt such hydroplanes when extended into operative position.

18. In a submarine boat folding and tilt-- ing hydroplanes,'rotary supports therefor, plungers mounted to reciprocate within the supports and. to turn therewith when reaching the limit of their forward travel, and clutch means between the plungers and hydroplanes to insure a firm connection between them during the turning of the plungers about their axes to tilt the hydroplanes. 19. In a submarineboat, folding and. tilt ing hydroplanes, rotary supports therefor, plungers mounted to reciprocate within the supports and to turn therewith when at the limit of their forward travel, plugs having screwthread connection with the plungers, connecting means between the plugs and hydroplanes, and clutch mechanism between the plungers and hydroplanes to obtain a firm connection between such parts to insure turning of the hydroplanes and plungers when tilting the hydroplanes into submerging or rising position.

20. In a submarine boat, bearings disposed within the sides of the boat, cylinders rotatablymounted in the bearings, the cyllnders and bearings having registering longitudinally disposed guide-ways, hydroplanes pivotally supported by the cylinders, plnngers mounted to reciprocate within the cylinders, cooperating clutch elements associated with the hydroplanes and plungers, and members having connection with the hy proplanes and screwthread-connection with the respective plunger-s.

21. In a submarine boat, bearings arranged within. the sides thereof, cylinders mounted in the bearings and having a limited rotary movement, hydroplanes pivotally supported by the cylinders, plungers mounted to reciprocate within the cylinders and adapted when at the limit of their forward movement to make firm engagement withthe hydroplanes, connecting means between the hydroplanes and plungers and having a limited movement with respect to the plungers, and. holding means movable I mounted. in the bearings and formed with longitudinal guide-ways in register with the gu1dcways of the bearings, folding and MM- ing hydroplanes supported by the cylinders,

plungers mounted to reciprocate within the cylinders, plugs having screwthread connection with the plnngers and connected with the hydroplanes, clutchelements associated with the hydroplanes and plungers and. brought into active engagement when the plnngers are at the limit of their outward travel, and holding means movable withthe plungers and adapted to operate in the guide-ways of the cylinders and bearings and to register with the clearance-ways of the bearings when the plungers are at the limit of their forward travel to admit of the cylinders and plungers turning together when tilting the hydroplanes into submerging position,

23. In a submarine boat, bearings mounted within the sides of the boat and provided with longitudinal guide-ways terminating at their forward ends in laterally extending clearanceavays, cylinders rotatable in the bearings and formed with longitudinal guide-ways to register with the guide ways of the bearings,hydroplanes pivotally sup ported by the cylinders, plungers mounted to reciprocate in the cylinders and to receive a combined longitudinal and rotary movement when reaching the limit of "their forward travel, plugs having screwthread connection with the plunger's, links connecting the plugs with the hydroplanes, guide means between the plungers and the cylinders, holdings means movable with the plungers and adapted to operate in the registering gnide-ways of the cylinders and bearings and adapted to register with the clearance ways of the bearings when the plungers are at the limit of their forward travel, stops associated with the hydroplanes to engage the outer ends of the cylinders and hold the hydroplanes extended in operative position, and clutch elements associated with the hy droplanes and plnngers and in operative engagement when the plungers are at the limit of their forward travel.

24. In a submarine boat, bearings mounted within the sides of the boat and provided with longitudinal guide-ways and laterally extending clearance-ways, cylinders rotatable in the bearings and formed with longitudinal guide-ways, hydroplanes pivoted to the cylinders, plungers mounted to reciprocate within the cylinders and to receive a combined rotary and longitudinal movement, connecting means between the hydroplanes and plungers, and yokes loosely mounted upon the plnngers and having outwardly extending portions to operate in the guide-ways of the cylinders and plungers.

25. In a submarine boat, pillow bloc-ks having longitudinal guide-ways and laterinders, plungers embodying head and stem.

portions to operate in the cylinders and hollow extensions, respectively, the stem portions beingprovided with guide lugs to op" crate 1n the guide-ways of the sald hollow extensions, plugshaving screwthread connection with the heads of the plungers and connected by means of links with the hydroheads of the plungers and having ofistanding portions to operate in the guide-ways of the cylinders and illow blocks, stops connected with the hyc roplanes extended in 0perative position, and clutch elements associated with the hydroplanes and plungers and brought into active operation when the plungers are at the limit of their forward travel.

In testimony whereof I have hereunto set my hand this 27 day of December A. D.

' J OHANNES F. W. KOLVIG.

Witnesses EDGAR A. WILLIAMS, JAMES R. MAOINTYRE.

I planes, yokes loosely connected with the

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