US1117176A - Signaling apparatus for marine vessels. - Google Patents

Description

J. W. FLAGG. SGNALING APPARATUS FOB, MARINE VBSSELS.

APPLICATION FILED PEB. 7, 1910. 1,1 17, 176.

Patented Nov. 1'?, 1914.

2 SHEETS-SHEET 1.

THE NDRRIS PETERS CO,.PH010-L|THO,.WASHINGTON. DA c.

J. W. FLAGG.

SIGNALING APPARATUS POR MARINE VESSBLS.

APPLwAmIoN FILED FEB. 7,1910.

Patented N0v.17, 1914.

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THE NORRIS PETERS CD.. PHON-LITHO.. WASHINGTUN. D4 C.

JOSEPH WALTER FLAGG, OF WORCESTER., MASSACHUSETTS.

SIGNALING APPARATUS FORMARIN E VESSELS.

Specification of Letters Patent.

Patented Nov. "rr, '1914.

4 Application fiIed 'February 7, 1910. Serial No. 542,393.

To all whom it may concern Be it known that I, Josnrri WALTER FLAGG, a citizen of the United States, residing at lVorcester, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement iii.

Signaling Apparatus for Marine Vessels, of which the following is a specification, accompanied by drawings, forming al part of the same, in which Figure l represents a diagrammatic view showing contiguous vessels moving in different directions, one of said vessels being equipped with my improved signaling apparatus. Fig. Q is a side elevation of the signaling apparatus. Fig. 3 is a plan view on a larger scale of the operative mechanism by means of which certain characteristics of the signals, such for example as direction, force, pitch, intervals, etc., may be varied. Fig. f-l is a side elevation of the operative mechanism, a portion thereof, and also the inclosing case therefor, being shown in section, on the line L /t, Fig. 3. Fig. 5 is a detached sectional view of a portion ofthe rotating mechanism, whereby the direction of successive signals is varied. Figs. 6, and 8 are detached views, shown in elevation, of a portion of the signal controlling mechanism, each of said figures showing the parts in different positions. Fig. 9v is a plan view in section on the line 9 9, Fig. 5. Fig. 10 is detached view of a portionv of the drivingniechanism with the connected latcliing bar, and Fig. ll is a detached view of the friction lever 27 with itsl connected operating mechanism.

My present invention relates to a system of audible signaling especially adapted for marine vessels. comprising a succession of sounds produced vby any convenient means, such as a whistle, siren, horn, or the like, and capable of conveying to the hearer certain desirable information relating to the signaling vessel, such as its direction, speed,

size, motive power, etc. These results are accomplished in the system forming the subv4 ject of my present invention by producing certain variations in the signals rendered by means of any operating mechanism suitable `for the purpose. One embodiment of an operating mechanism` capable of producing lthe* several variations in the sound signals according to my present invention is herein shown and described, but I do not confine myself to'any special embodiment ofthe op- -the hearer and ythereby tion of the signaling apparatus relatively to erating mechanism, as the same may be varied as Judgment orvingenuity may dictate, or as the conditions of use may rene` der necessary.

sists in conveying to the hearer certain delinite information regarding the signaling vessel by ineans'of certain variations in the character of the sound signals. This is accomplished bv varying the force or intensity of successive sounds as they arev received by indicating the posithe direction of the vessel, by determining the pitch of the sounds, by varying Ithe intervals between successive sounds of'a given series, by varying the intervals between'series, or by the multiplication of certain sounds in the series, as-liereinafter described and pointed out in the annexed claims.

Referring to the diagrammatic view shown in Fig. l, whichl represents a plan view of three vessels, A denotes the vessel upon which my improved signaling appara tus is installed andB and C the two vessels upon which the signals'are being received. The vessels are v'assumedfto be moving in the directions indicated in Fig. l, the movement of vessel B being directly across the bow of the signaling vessel A, while vesselC is upon the oppositeJ side and passes iii al contrary direction to the signaling vessel A. The signaling apparatus is represented upon vessel A at D .and the capta-ins or other oiicers of the vessels B and C are stationed at E and F respectively.

The signaling apparatus comprises ahorn l, preferably arranged in a horizontal plane and having a rotative movement about a vertical axis 2, said axis'beiiig indicatedinl FigJQ by the broken line 3, 3. Any suitable mechanism is provided for producing a blast of air or steam through the horn l. The horn is 'rotated about the vertical axisfby any suitable operating mechanism such as that represented in the accompanying draw'- ings and hereinafteridescribed, or by any other suitable mechanism by which a rotativemovement may be imparted to the horn. In the present instance the mechanism employed is adapted to impart an intermittent rotative movement through predetermined arcswith a period of dwell between each movement, said periods of dwell occurring when the `mouth of the horn 4is pointed in one of the lve directions indicatedfby' the '60 The essential feature'of my invention coniio arrows l, I), (5, i and 8, Fig. l. llhe connection. of the horn with the sound produc- 'ing means is such that a short blast will be emitted at each direction oit the horn as indicated by the arrows il, 5, 6, T and 8, whereby the direction ot the horn at each period ot signaling will bear a certain iXed angular relation to the axial line o the vessel, the signals occurring in directions el; and being directed toward the larboard side oi the vessel and those in directions 7 and S toward the starboard side. Of the tour signals given upon the opposite sides oi' the vessel, those at Ll and 8 will be directed toward the stern and those at and 'T toward the bow.

lt the sounds produced are ruii'form at the signaling vessel, they will be varied at the receiving vessel according to the direction of the horn, as it is pointed toward or away troni the receiving vessel. ln the diagram shown in lig. l, it uniform signals are emitted by the horn in each oit the tive directions, the signal given in the direction will. sound lmuch louder upon the receiving vessel C than that in any ot the other directions,

while that given in the direction 8 will be the faintest; likewise the signal given in the direction 7 will be the loudest and that in direction -fithe 'faintest when received upon the vessel B. rl`he period of time during which the horn is moving from one direction to the other will constitute an interval between the signals. ln the pr'sent instance the intervals between signals given in the directions el, 5, (i, '7 and 8 "ill be uniform, while the interval between the signals given in the` direction 8 and the direction i will be twice the length of the other intervals. f he long interval will, therefore, occur when the horn is moving from the starboard to the larboard side oit the vessel, and the signal given between the two larboard signals in the directions d and 5 and the two starboard signals in the directions 7 and 8, or the intermediate signal, will always be directed toward the bow of the vessel. The long interval between the signals in the directions 8 and el will always occur as the mouth oi the horn is pointed toward the stern of the vessel. These fixed relations of the horn to the axis of the vessel during each individual signal enables persons upon the receiving vessels B and C to determine the direction in which the vessel is moving. An oilicer upon vessel B, for example, by the greater intensity of sound at the fourth sig nal after the long interval will be aware not only of the relative position of the signaling vessel to his own vessel, but will also be apprised ot the direction in which the signaling vessel is moving, as the signal having the greatest intensity when received upon vessel B will be the rst signal upon the starboardside and at a predetermined angle to the axis of the vessel A, said angle being known to the hearer upon vessel B. rlhe information thus imparted informs the oliicer upon vessel l that the direction of his own vessel across the bow of the signaling vessel A. ln like manner the oflicer upon vessel C is informed ot the relative positions of the two vessels and of the direction in which vessel n is moving, as the loudest signal ot' the live in the series heard upon vessel C is that given in the direction oit' the arrow 5, which the second larboard signal.

l have devised certain modiiications or relinements oiC operation by which other suitable iutorniation may be imparted to oliicers ot xceiving vessels, such as motive poner, sped, size and other items of inten mation when desired. rilhis information l propose to impart by certain modifications in the pitch ot' the signals, duration of intervals, multiplication ot' signals, etc., as hereinafter described.

)is previously described, the direction of the bow olf the signaling' vessel will be determined by the relative oree or intensity ot he individual signals. By giving to the signals a certain predetermined pitch, the size or tonnage ot the vessel may be indicated, a certain pitch being adopted to indicate vessels ot live thousand tons or under, another pitch tor vessels between live thousand and ten thousand tons, another pitch for vessels between ten thousand and twenty thousand tons and still another pitch for vessels exceeding twenty thousand tons. By varying the rotative speed of the hor about its vertical axis, the intervals between sig nals can be so changed as to indicate the speed. ot the signaling vessel. A variation in the interval during which the horn is pass` ing from the position 8 to the position t, und vtroni the last starboard to the first larboard signal, may be employed to denote the power by which the signaling vessel is propelled, one interval indicating sails and another steam power. ()ther information may also be conveyed by duplicating any one of the individual signals; 'for example, a double signal given when the horn is in the direction 6, or toward the bow of the vessel, may indica-te that the signaling vessel is drifting, having lost its propelling power. To an otticer stationed at ll upon the receiving vessel, the torce of the first starboard signal at 2' indicates that the course of the signaling vessel is across the bow ot the vessel B. Si predetermined interval between each two ot the signals in the series may indicate that the signaling vessel is moving at a given rate of speed, say ten miles per hour. A predetermined interval bct'ween the starboard and the larboard signals, or while the mouth oii the horn is passing from the direction indicated by the arrow 8 to that indicated by the arrow Ll, may indicate that the signaling vessel is propelled by steam and, by the prelally attached to a disk a friction lever 27 pivoted determined pitch of the signals, the tonnage of the signaling vessel may be indicated. In addition to the above information, a duplication of the bow signal, or that given in the direction of the arrow 6, may be utilized to indicate that while the vessel is propelled by steam it is not moving imder its own power, but drifting. Similarly, a duplication `of any one of the other individual signals lmay be made to convey other information such, for example, as the nationality of the vessel.

To indicate the modifications or refinements in the operation of my signaling apparatus, I have illustrated in the accompanying drawings the operative mechanism which I inclose ina case 9, Fig. 2, Aeilig shown on an enlarged scale with the cover removed in Fig. 3 and also in Fig. 4 with one side removed on the broken line 4-4, Fig. 3. The horn 1 is mounted upon a hollow spindle 10, journaled in vertical bearings and intermittently rotated and held stationary between each intermittent movement. The driving mechanism comprises a motor spring contained ina case 11 and operating through a train of gears to rotate a shaft 12. The shaft 12 carries a worm 13 which engages a worm wheel 14.

attached to a vertical spindle 15. The vertical spindle 15 carries a drum 16 at its upper end and circular plate 17 provided with a driving tooth 13 which, during each rotation. engages one of the notches 19 npon a plate 20, turning' the latter one sixth of a revolution. Between each intermittent rotation of the plate 20, it is held from turning by the engagement of the circular periphery of the plate 17 with one of the concave recesses 21y upon the plate 20, said plates 17 and 2O constituting the well known Geneva stop motion. 'Ihe plate 20 is attached to the hollow spindle 10 upon which the horn 1 is mounted. i

. Connected with the shaft 12 is a centrifugal governor comprising the weighted balls 22, 22, .which are attached to springs 23, 23 midway their length. The outer ends of the springs 23 are pivotally connected with a collar 24 attached to the shaft 12. The inner ends of the springs 23 are pivot- 26, having a spline connection with the shaft .12 by a spline 25. Opposing the outer surface of the disk 26 is at 28 upon a fixed stud l29. Sliding in bearings upon the fixed stud 29 is a vertical rod 30 extended downward through the casing 9 by a link 30a. A collar 31 is attached to the upper end of the rod 30 and between the fixed bearing and the collar `31 is interposed a spiral spring 31a, which normally holds the rod 30 in an elevated position. attached to the rod 30 is a wedge shaped plate 32 which bears against an arm 33 projecting at right angles said case l provided with yward through the Case 9 from the lever 27. A spring 34 connects the lever 27 with a fixed arm 35, with its tension applied to hold the arm 33 against the edge of the wedge shaped plate 32.

When the speed of the shaft l2 .increases sufliciently to throw the vweighted balls 22 outward, the diskI 261s drawn against the friction 27, which acts as a brake tojcheck the speed of the shaft l2. By raising and lowering the wedge shaped plate 32, the position of the friction lever 27 may be varied, thereby enabling they operator to control the speed o f the shaft 12 and consequently lthe speed of thel connected mechanism by which the rotating horn is driven. rrittached to the lhollow rotating spindle 10 and belowthe plate 20 is a disk 36 having a notch 37 adapted to be engaged by the end 38 ofl a sliding rod 39, which is also an arm 40 yadapted to engage a notch 41 in the drum v16, thereby holding the driving mechanism from rotation. The sliding rod 39 is moved to the right tov carry its end 33 into the notch 37 and its arm ,40 into the notch 41 by means of a compression spiral spring 42 interposed between a fixed stud 43, which forms a bearing for one end `of the rod 39, and a collar 44 attached to the rod.

In a bearing vcarried by the stud 43 is a l verticallysliding rod 45, extending vdowninto position to be depressed by the operator at will, and normally held in a raised position by means of a spiral spring 46 interposed between the fixed bearing ofthe rod and a collar 47 attached to the -rod 45. lvl/Then the rod 45 is in itsv raised position, it passes by and intercepts the end of the sliding rod 39, thereby preventing itsk sliding movement toward the left and the release of the driving mechanism 4 The mechanism for withdrawing the rod 39 from the drum. 16 and dislr36 comprises a motor spring inclosed in a case 48 and rotating through a train of gearing a shaft 49, which carries a worm 50 engagingv a worm wheel 51 attached to a'vertical shaft 52, to the upper end of which is attached a disk 53 provided with a radially projecting tooth 54, which contacts during its rotation, inthe direction of the arrow 55, with the collar 44 to move the sliding rod 39 in the direction of the arrow 56 whenever the locking rod 45 has been depressed.

The speed of the shaft 49, ylike the speed of the shaft 12, is controlled by a controlling mechanism lwhich is applied to the shaft 12 and weighted balls 57, 57, springs disk 59, friction lever 60, vertically sliding the duplicate of that'. I

ycomprises the 5s, 5s, friction 125 rod 61 and wedge shaped plate 62 operating 'i l through the case 9 by means of a'link 61a,

downwar I Figs. 2 and l enabling," the operator to depress the wedwe shaped plate (32 against the tension oil? e spiral spring` @il and thereby very the position of the friction lever GO in order to control the speed o'l` th shalt 49.

The hollenY spindle l() is provided near its lower end lwith lateral openings or ports 65, GG., GT, 68 and G9, Fig. 9 the spaces between uid openings being unitorni, with the eX- ception o'lf `that 1i et\\'een 65 und G9 Which is douhle the length ot the other spaces. The journal hearing of the hollenT spindle is provided with an opening;v TO in the plane of the openings in the hollow spindle, said opening' 70 coinn'iuniceting with e passage Tl which connininicates with :i passage l2 at right :ingles thereto and leads to e source oi air or ste-ani under pressure. the hollow spindle is rotated, each oit the live ports are successively brought into alineinent With the opening T0, alleo'ing the hlast o'll e-ir or steam trannnitted through the passages 72 und Tl to enter the hollow spindle l and conneetell horn l. Coniinunicating with the passage l; and traiisyersely thereto is e Chaniher T53 inclosed in a cylindrical case 74: und containing' a series ot connected slidoble reed boxes, in the present instance three in nuniher, reed T in the upper he); losingl in :ilinoineut with the passage The reed bones are connected with the upper end of the ease 'lllhy means ot e spiral spring,` 76, end to trie loiver end of the reed leones is connected a link 77 which posses downward through the ease 9. Each of the reeds in the three ho is ot dillierent pitch from the others and. as the hlast ot' air or steam is triuisniit ed through the passage to the hi rn. it will produce sound Correspending` in pitch to that oit the reed which, for the linie being, in alineinent with the passage order to change troni the reed 75 to the nent lo. reeti at TES, the linl 77 is released., alle, np; the sprhne,l 7G to raise the reed hob; a predetermined distance su'llicient to ln'r the reed 7S into alii ement vith the pesi; lowest reed rient wi i the passage sound `ignals to he given upon the pitch el" either ott-he indi\.idual reeds 75, '78 or 79.

rl`he passage age and, in lille inanner, the 9 may he brought into aline- ?2, enabling the 7 2 provided with a slidH ing,` piston o =late 8O adapted to he inored past the mouth ol the p*4 age il end eut earn to the horn.

olf the lion* olf air or er The ,ente SO is piyo'tally connected by a rod i a lever S2, hawingl one end piyited a tinted support and having its free end Sil evtendiuoj close to periphery ot the. drm lll. The pivol ipport ofi the lever rurried hy a ring' S55 Vwhich is rotatable ahout the exis et the sliduliile gate SO. Frein one side o'l the ring.;` S5 there projects a lug 3 to which a link S7 is piroted,

extending downward through the case 9 'in position to he operated hy the attendant.

Trojecting adially 'freni the periphery ot the druin lli and midway between its two edges is a pin and near the upper edge ot the drinn ere two siniler pins S9 and 90. lllhen the ring 85 and lever 82 have heen roelzed into the position shown in llig. (l, the tree end Gef; ot the lever is held below the plane ol: rotation ot the pins 88, 89 and DO. vWh the tree end of the lever `s raised, the link 87, into the position i Y l', the tre end of the lever Vwill he held i i the plaie of rotation ot the pin if; 1, position i" the lever Y i ie plaine oit rotation et the tuo pins o9 and 90. iXpplied to the lever e.. snr-al. spring 91 which holds the slidi g `rte 8O it the enti-eine end oli the pasf so not to impede the inerenient ol or steani through the passage 7l and into the horn l. lflheneyer the tree end olf the lever is raised i,e'ito the position V:.houn in Fig l', it will he strucl; hy the 88 durinp` the rotation of the drinn 16, L the pimted lever S2 so sliding gate 80 temporarily pin the mouth ot the passage 'Ti to cut ell pas,

am tl erethrough. Ars pin 88 has passed the soon, however, as the Y the spring 91 Will re- `rree end oli' the lever,

re the sliding gate 8G to normal position, es shown in Fig. 3. This action ot' the pin 8S will, therefore, cause a momentary interruption oli the current of air or steam through the horn and divide the signal Wh' eh is being; given during that rotation ot the druin i6 into two parte, producing a uuiltiple signel. When the lever 82 is raised into the position shown in ll 1g. 8, it will he o'mtafzlged twice during` the revolution of the drum 1G hy the pins 89 and 90, causing` two interruptions of the sound and dividing the signal into three pei-ts. rlhe drinn 16 is pro led with a series ot holes 99, adapted to ref-sive the pins 8S, 89 and 9) und, hy

prltipllfing` the nuniher ol pins in each plane ott holes, tlpe signals can he again subdivided so that, insli'crd olf one continuous signal, a

f-;ueression et short sionals may he Oiven ll] a suitable ng-ement et the pins relatively to the rotaiiv'e inoyernent oit the drum 16, trie iuterru,"ion ot the sound may he 'hulde to occur either at the middle of the si il. therehy produeingij two shorter nale, hut ot eoual duration, or nearer the heb nuingr or end ot the signal, thereby produeingi' tsvo signals oit different duration, with the shorter either preceding` or tollouf'ingiY the longer signal.

'The dou'nvfa 'ally extending; rods and links u. e5, 6l, TT and 87 muy he operated by a single attendant and, assuming' the parts `spindle 10. The withdrawal of the sliding rod 39 permits the driving mechanism for rotatingthe hollow spindle l0 to be setv in motionby the tension of the motor spring in the case l1. y .At each revolution of the spindle 15, an

intermittent motion of one sixth a revoluf tion is given to the plate 20 by the engagement of the tooth 18 with one of the notches 19. Between each intermittent movement of the plate 20 it is held from rotation by its engagement with the circular peripheryof the plate 17. During the stationary position of the plate 20 and hollow spindle 10,

one of the ports of the latter will be held in alinement with the opening 70 communieating with the passages 7l and 72 through which the blast of air or steam is l cated to the horn l. At each rotation of the vertical spindle 15 an intermittent movement will be given to the hollow spindle 1.0, bringing the next succeeding port into alinement with the opening 70. The space between the ports is doubled between the ports 65 and 69, requiring two intermittent movements of the plate 20, after the port 65 has been passed, in order to bring the port 69 into alinement with the opening 70. By this arrangement of the ports in the hollow spindle, live successive signals will be given during each complete rotation of the plate 20, one at each of the first five intermittent movements, the siXth intermittent movement failing to sound a signal as the corresponding port in the hollow spindle is omitted.

. In attaching the horn tothe hollow spindle l0, the mouth of the horn is made to point toward the stern of the vessel during the interval between the two instants `that the ports 65 and 69 are in alinementwith the opening 70, thereby producing an interval of double length and omitting the usual signal as the mouth of the horn passes the stern of the vessel, but making the intervals Lmiform between each of the remaining fivey signals.

After the vertical spindle l5 has made siX complete revolutions and the hollow spindle 10 has made ,one complete revolution, both of the notches all and 37 will be brought into alinement with the sliding rod 39, which will then be moved to the right by the force of the spring 4:2, causing the driving mechanism to be again locked and held from rota- `mal position of the friction communiel meansof the rod 30 tion. If the vertically sliding'- rod 45 be permanently maintained in its depressed position, the next succeeding contact of the tooth 54 against the collar 414: will again move the rod 39 to the left and allow another cycle of five signals to be given.1 During the rotative movement of the hollow spindle l0, any desired variation maybe made in its speed by varying the position of the friction lever 27 relatively J tothe nordisk 26. A decrease in the speed of the hollow spindle 10 will increase the duration of each signal and also the intervals kbetweenhthe signals, requiring a longer time for completing the cycle of live signals. WVhatever the interval between any two signals ina cycle of series may be, the interval between thelast signal of the series and the first signal of the next succeeding .series will be twice that length if the locking rod 39 is permanently held out of engagement with the driving mechanism, but as the rod is yagain carried into engagement by thespring l2 at the end of each cycle, the length of the long interval can be varied by varying the lspeed of the vertical shaft-52 so -as to allow the driv-y ling mechanism to remain locked. rThe ad.-

justment ofl the wedge shaped plate 32v by will, therefore, determine the period of time required for each cycle of signals and, consequently, both the duration of each signal and the intervals between successive signals of the cycle. The

`adjustment of the wedge shaped plate 62 by 1o() means of the li-nlr 6lEL will. enable the long interval between the starboard and larboard signals to be increased. The adjustment of the 'pivoted lever 82 by means of the link 87 will enable any one of the signals to be subdivided at will and the number of signals correspondingly multiplied. By the adjustment of the reeds 75,78 and 79, set at different pitches, the pitch of the signals may be varied, the five signals of each series being 11o all given at a predetermined pitch, or a variation can be made in the indivi dual signals of each series as may be required by any predetermined code which will enable" the different variations to be intelligible upon the receiving vessels.

-A code which will adapt n the lpossible lvariations of my improved system of sigcapable of rotation about a vertical aXis, for conveying audible signals produced in any usual and Well known manner, such as that produced by air or steam under pressure, with suitable operative mechanism connected therewith to cause a variable rotation of the horn and to produce changes in the pitch of the signals, or a multiplication thereof.

I claim,

l. In a signaling apparatus, a sound projecting device, means for rotating said sound projecting device into a series ont' predetermined positions, automatic means for interrupting said last mentioned means, and means for releasing said interrupting means.

2. In a signaling apparatus, a sound projecting device, automatically controlled means for imparting rotative movement to said sound projecting device, means for interrupting the action ot said last mentioned means, and automatically controlled means for releasing said interrupting means.

3. In a signaling apparatus, a sound projecting means, means, comprising a motor, for rotating said sound projecting means into a series ot predetermined positions, automatic means for interrupting the action of said motor, and means, comprising a second motor, for releasing said interrupting means.

4. In a signaling apparatus, a sound projecting means, a motor t'or imparting rotative movement to said sound projecting means, automatic means for controlling the speed of said motor, automatic means for interrupting the action of said motor, a second motor adapted to intermittently release said interrupting means, and automatic means for controlling the speed of said second mo tor.

5. In a signaling apparatus, a sound projecting means, a motor for imparting rotative movement to said sound projecting means, automatic means for controlling the speed of said rotative movement, means for varying the speed of said rotative movement at will, automatic means for interrupting the action ot said motor, a second motor adapted to intermittently release said inter- Gopies of this patent may be obtained for ve Liri/,ive

rupting means, means for controlling the speed of said second motor, and means for varying the speed of said second motor at will.

6. In a signaling apparatus, means for conveying a blast of steam, sound producing means in the path of the steam, rotatable means in communication with said steam conveying means for causing a series of sounds to be produced by said producing means upon each revolution of said rotatable means, and means, comprising a valve for momentarily interrupting the flow of steam in said conveying means, for dividing each sound into a predetermined number of shorter sounds.

7. In a signaling apparatus, means for conveying a blast or' steam, sound producing means in the path of the steam, rotating means in communication With said steam conveying means for causing a series of sounds to be produced by said producing means upon each revolution of said rotating means, a valve for momentarily interrupting the flow of steam between said sound producing means and said rotating means, and means, comprising a series ot pins rotated in synchronism With said rotating means, for operating said valve.

8. In a signaling apparatus, means 'for conveying a blast oi' steam, sound producing means in the path oi' the steam, rotating means in communication with said steam conveying means for causing a series of sounds to be produced by said producing means upon each revolution of said rotating means, a valve for momentarily interrupting the iow of steam during the period of each sound, a lever for operating the valve, a plurality of series of pins disposed at predetermined selected points on said rotating means, adapted to engage the lever to operate the valve, and means for projecting said lever into the path of a selected series of pins.

JOSEPH WALTER FLAGG.

1Witnesses PnNnLorn CoMBnRnAoH, NELLIE WHALEN.

cents each, by addressing the Commissioner of Tatents,

Washington, D. C.

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