US607255A

US607255A - marangos

Info

Publication number: US607255A
Authority: US
Publication date: 1898-07-12
Anticipated expiration: 1915-07-12

Description

N0. 607,255. Patented .lllly l2, |898. A. MARANGUS. ELEVATOR FUR GBANULAR MATERIAL.

(Application led Sept. 13, 1897.)

3 Sheets-Sheet I.

y(No Model.)

IN VENTO/,-

WITNESS Patented July I2, |898.

3 Sheets-Sheet 2.

from Arron/EY A. MARANGos. ELEVATOR FOB GRANULAR MATERIL.

(Application led S-ept. 13, 189.7.)

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N0. 607,255. Paehd lllly l2, |898.

' A. MARNGUS.

ELEVATOR FDR GRANULAR MATERIAL.

(Application led Sept. 13, 1897.)

3 Sheets-Sheet 3.

I" f6. 5 yr (No Model.)

'mi Nonms PETERS co. PHomLlTNo., wnsummon. D. c.

Nirnn STATES.

AIOSTOLOS MARANGOS, OF MARSEILLES, FRANCE.

ELEVATOR FOR GRANULAR IVIAIERIAL.

SPECIFICATION forming partof Letters Patent No. 607,255, dated J' uly 12, 1898. Application tiled September 13, 1897. Serial No. 651,551, (No model.) Patented in France August 13, 1897, No. 266,356.

T0 all whom t may concern:

Beit known that I, APOSTOLOS MARANGOS, a subject of the King of Greece, formerly of Cyclades, Greece, now residing in Marseilles, Bouches-du-Rhne, France, have invented certain new and useful Improvements in Elevators for Raising Granular or Pnlverulent Material or Substances, (patented in France, No. 266,356, dated August 13, 1897,) of which the following is a full, clear, and exact description.

My invention relates to elevators, particularly such as are located on floats or pontoons to be used in loading or unloading ships, and has for its object to provide a construction which will not be affected by the pitching and rolling motion of the float and which will be highly efficient.

To this end my invention consists in the novel construction and arrangement of parts, as will be hereinafter described and claimed.

In order that the construction, arrangement, and operation of the elevator may be clearly understood, I will describe the invention with reference to the accompanying drawings, in which- Figure 1 represents an elevator constructed according to my invention and applied, by way of example, for loading a vessel. Fig. 2 is a View similar to Fig; 1, showing the ele'- vator arranged for unloading a vessel and conveying the material to a distance. Fig. 3 represents in elevation the front part of the floating pontoon with the crane which supports and operates the elevator proper. Fig.

4i is a front elevation of Fig. 3, partly in sec' tion. Fig. 5 represents a vertical section of the elevator proper. Fig. G is a front elevation of the said elevator, partly in section. Fig. 7 is a plan showing the movable suspension-joint thereof, and Figs. S and 9 are coustructional details.

In Figs. 1 and 2, 1 represents the floating pontoon, upon which the elevator proper is arranged. 2 is the mast of the said floating pontoon, constituting the fixed part ofthe crane. 3 is the boom of this crane. 4 `is the elevator proper, suspended from the boom 3 by a movable joint. 5 5 are connectingchains of the boom 3. 6 is the windlass for operatingtheboom 3. 7 is the engine, actuating both the elevator proper, 4, and the screwpropeller S of the pontoon. Fig. 1, moreover, shows the lighter or barge X, in which Vthe merchandise to be loaded is stored, and the vessel Y to be loaded. -The discharge-conn duit m is likewise shown, which passes the material raised from the barge X into the ves. sel Y.

Fig. 2 shows the vessel Y/ to be unloaded,

the discharge-conduit delivering the raised material into a transporter or conveyer y consisting of an endless band actuated by an independent motor y', which may be supplied with steam from a flexible tube starting from the pontoon 1 and not represented in the drawings.

The mast 2,hereinbefore referred to, is fixed to the bottom of the pontoon in the ordinary way, supported toward the middle of its height by means of a chair formed by a collar 9 and stays 10, rigidly fixed to the deck, (see Figs. 3 and 4,) while shrouds 11, with couplingscrews, stay or support its top. The collar 9 comprises a spindle 12, on which the pole 3 can oscillate in a vertical plane.

The connecting-chains 5 5 are fastened at 13 to the pole 3, pass over guide-rollers 14- 14, in connection with the iron hoop iitted to the top of the mast 2, and over the equalizingn pulley 15 of the pulley-frame, from which starts a chain 1G, which is wound upon the drum of the windlass 6.

l The elevator proper is composed of a series of tubes d, a top section or upper tube a7, and a bottom section o, connected with each other by bolts, Fig. 5, and in the interior of which moves an elevator-screw c with helicoidal blades c'. These tubes tare cylindrical and are provided with flanges a to insure their` connection. The upper tube o7 is closed by a cap o2 and has a discharge-nozzle a3, while the lower tube c, shorter than the others, is completely open and is provided with a mouth or inlet a4 and a spider a5, carrying a central step-bearing b2. It will be seen that the upn per portion of the lower tube-section a widens downwardly and that the lower end of the elevator -screw projects beyond the tube formed by the sections a alc, so that the lower end of the screw is 'exposed and engages the material to be raised.

The elevator-screw is formed by as many elements, Fig. 5, as there are tube-sections a IOO a a7, and each of these elements comprises a central axis c and a series of helicoidal wings or blades c.

The axis c is a steel tube, to the extremities of which square ends d are fixed, which engage with sockets d, capable of turning in bearings h of the cross-bars b', forming part of one of the flanges a of the tubes a. The square ends CZ and the sockets d form the junction between the various elements of the elevator-screw.

The axis of the upper element passes through the cap a2 and receives a gear-wheel e, by the aid of which a rotary movement can be imparted to the elevator-screw, while the lower element extends into the casing formed by the spider a5 and rests with its axis upon the step-bearing U2 in the said spider.

The wings or blades c receive the shape of spoons with helicoidal surfaces and are severally fixed to the central axis c, Fig. 9, by means of small bolts j', engaging witha small T-iron f', firmly riveted to the said axis. rlhese blades are so arranged around the axis e that the upper part of the one is situated a few centimeters above the lower extremity of that blade which lies immediately above and in line therewith. The whole arrangement of these blades thus forms, as it were, a spiral staircase, the steps of which are formed by the blades themselves.

Owing to the arrangement of the lower end of each blade below the upper end of the next blade below the material raised by one blade and dropping olf from the upper end thereof will fall directly upon the lower end of the next blade above and is thus added to the material already raised by the said blade directly. Thus if, as shown in Fig. 5, the lower portion of the elevator, where the elevatorscrew extends into the spider a5, be dipped into the material to be raised this material will be taken up by the blade which is entirely immersed into it and the next blade above, which is partlyimmersed into it. The material raised bythe rst blade is deposited upon the second blade, which thus receives an additional load. Any foreign matter 01 body that may find its way between the inner wall of one tube and a continuous elevator-screw would before being set free have to traverse the whole generatrix of this screw, (about five meters per one meter,) whereby the apparatus would be wedged up and worn by friction, while with the use of the overlappinghelicoidal blades these disadvantages need not be apprehended.

The elevator thus formed is, as has been illustrated, suspended from the extremity of the boom 3 of the mast 2, which is done by means of a joint so arranged that the said elevator always occupies a vertical position irrespective of the rolling and pitching movements to which the pontoon l is subjected and in such a manner that the vibrations and d1splacements of the elevator do not affect the pontoon.

shaft 7L', the central portion of which is inserted into a hollow shaft 7b2, supported by the two interior branches g2 and g3.

Upon the shaft h is mounted a doublegrooved pulley t, over which passes the transmission-rope the action of which is hereinafter described, and a bevel-wheel t', gearing with a bevel-wheel e on the central axis of the elevator-screw. The pulley Il and the wheel t are respectively mounted between the branches g g2 and g3 g4, whereby any overhanging is prevented.

Upon the hollow shaft 71.2, between the branches g2 and g3, a socket is freely slid, which is connected with the cap a2 of the upper tube of the elevator.

It will be seen that the shaft 71.- and the shaft 7L are perpendicularrelatively to each other, and that together with the piece g they coustitute a universal joint. Under these conditions the elevator is enabled to oscillate in all directions. Now, as the pivot constituted by the shaft 71. lies below the pivot afforded rope is passed over loose guide-pulleysj and j, arranged on the shaft, around which the movement takes place. rlhese pulleys are of different diameters, as shown. During the oscillation around the shaft 71. (rolling) all. that portion of `the structure which lies above this shaft remains immovable, while that which lies below oscillates around this shaft and thus actuates the gearing e, which remains always in gear with t'. In constructtions used hitherto for similar purposes only a slight adjustability of the angle between the driven elevator-shafts and its supports has been obtained, and on account of the use of shafts geared together in some special way a large loss of power by friction has been entailed. In my construction, however, only two bevel-wheels and a pulley are used for transmitting power. The range of adjustment is practically unlimited, and the cfliciency of the power-transmitting device is the same in every position of the elevator. In both cases and irrespective of the extent of these movements the transmission-rope z, as well as the gear-wheels c and t', acts always normally, and the transmission of the movement to the axis c of the elevator is insured.

IOO

IIO

The endless driving-rope z passes, as has been above shown, over the pulleyfi and over the guide-pulleys j and j. Its runs pass, respectively,over the pulleys 7a and 7a' ,arran ged, Figs. 3 and 4, at the point where the boom 3 is jointed to the mast 2, then over the pulleys Z and Z', arranged at the foot of the mast 2. It finally passes around the drum m, directly mounted upon the shaft of the motor 7, Figs. 1 and 2. The rope is subjected to the action of a tension device consisting of a roller n, movable upon a guide n', connected to a counterweight n2. The operation of the elevator is as follows: The pontoon is brought as close as possible either to the barge, Fig. l, or to the vessel, Fig. 2, from which the material is to be unloaded, and the said pontoon is firmly secured. Thereupon the elevatortube is immersed into the material by inclining the boom 3 more or less by means of the windlass G. Subsequently the motor 7 is started, which, through the medium of the rope e, rotates the elevator-screw. The conveyer-blades raise the material, under the conditions above indicated, until the latter has reached the top part of the elevator, whence it is discharged into the discharg-nozzle a3, which transmits it to the delivery-conduit fc, Fig. l, or to Qc,the function of which is to convey it to a horizontal transporter. It is to be observed that the elevator cannot in any way be affected by the pitching and rolling action of the pontoon carrying the same, owing to the universal joint above described and owing tothe fact that the transmission is always effected under normal conditions by reason of the special arrangement of the said joint.

The shape, dimensions, and materials of all the constituent parts of the elevator may of course be varied to suit the requirements in each case.

Having thus described my invention, I

which the elevator is suspended from said boom, said universal joint comprising two horizontal pivots or axes arranged at different heights and crosswise, substantially as described.

2. The combination with a stationary support or mast, a boom movably connected to the mast, ahanger suspended from the boom to swing about a horizontal axis, a horizontal shaft journaled in said hanger below said axis and extending crosswise thereof, an elevator freely suspended on said horizontal shaft, and comprising a vertical screw-shaft and a casing surrounding the same, engaging gear-wheels located on said horizontal shaft and vertical shaft, and means for rotating the horizontal shaft, substantially as described.

3. The combination of a stationary support or mast, a boom movably connected to the mast, a hanger suspended from the boom to swing about a horizontal axis, a horizontal shaft journaled in said hanger below said axis and extending crosswise thereof, an elevator freely suspended on said horizontal shaft, and comprising a vertical screw-shaft and a casing surrounding the same, engaging gearwheels located on said horizontal shaft and vertical shaft, a pulley mounted upon the horizontal shaft and connected to rotate with the gear-wheel thereon, pulleys mounted to rotate about the suspension-axis of the hanger, and a driving connection passing over said pulleys, substantially as described.

Ai. The combination of a stationary support or mast, a boom movably connected to the mast, an elevator, and a universal joint by which the elevator is supended from said boom, the universal joint comprising two horizontal pivots or aXes arranged crosswise, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AIOSTOLOS MARANGOS.

Vitnesses:

SorHooLE T. ZACHAEIA, JOSEPH SERRE.