Untitled record

Application filed October 15, 1892. Serial No. 448,999. (No model.)

Io all whom it may concern:

Be it known that I, William McClave, a citizen of the United States, residing at Scranton, in the county of Lackawanna and State 5 of Pennsylvania, have invented certain new and useful Improvements in Conveyers for Ashes and other Light Substances; and I do hereby declare the following to be a full, clear, and exact description of the invention, io such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to steam jetting devices used for creatinga suction of air, which air is employed as a conveyer of substances 15 through a tube from one place to another, and the objects of my improvements are, to multiply the amount of power along the line of travel of the substances and to facilitate the movement of solid, large particles in the tube 20 with substances in form of dust, ashes and the like; and also to prevent the escape of the dust from the buildings where the substances are dumped into a heap or pile.

My invention consists first, in two or more 25 steam jetting devices arranged tandem or in procession in a tube open for the admission of air and of the substances to be conveyed; said jetting devices being supplied separately with steam from a common source of supply, 30 or from separate boilers, whereby the suctional power of the rear or first steam jetting device, is augmented by a preceding jetting device, and thus, with a pressure of, say one hundred pounds to the square inch, a suc35 tional power may be obtained inlhe conveying tube equal to that exerted by a much greater pressure in the boiler, if the said given steam pressure was applied to only one steam jetting device.

My invention also consists in a novel combination of a conveyer tube and two or more steam jet rings of different diameters, the larger one encircling the smaller one, and the two rings being in steam communication with 45 each other, and a guiding and guarding openwork tube of less diameter than the outer conveying tube, and of about the same diameter as the smaller ring, whereby the larger solid particles of the substances being con50 veyed are directed through the smaller ring, and the powdered and smaller particles are allowed to escape through the larger ring, and also between it and the tube; aud at the same time the power of the suctional blower is augmented, the two or more rings serving for jet- 55 ting two circles of jets within the same tube from the same location.

My invention also consists in the combination of two or more suction steam jetting devices arranged in tandem or procession in a 60 tube open for the admission of air and the substances to be conveyed, and supplied separately with steam, with the ash pit or pits of a boiler or other furnace.

My invention also consists in the combina- 65 tion of two or more suction steam jetting devices arranged in tandem or procession in a tube open for the admission of air and of the substances to be conveyed, and supplied separately with steam from a common source of 70 supply, and a receiving building provided with air escape passages and a dust arresting ceiling, or walls through which air is allowed to flow and ashes prevented from passing out into the atmosphere to any serious extent. 75

My invention also consists in a novel construction of conveying tube, whereby sblid particles as well as powdered substance^zs can be conveyed by air without any inconvenience from clogging of the air tube at the jetting 80 devices, by large solid pieces—as clinkersand the like, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a vertical transverse section of two boiler 85 furnaces, and a longitudinal section of my invention as applied to the ash-pits thereof. Fig. 2 is an enlarged, broken longitudinal section of my tandem steam jetting devices as applied to a conveying tube slightly changed 90 in shape. In this view two steam jetting rings are shown as constituting the jetting device proper, and two such jetting devices are shown arranged tandem or in procession. Fig. 3 is a transverse section of the parts 95 shown in Figs. 1 and 2, on the same scale. Fig. 4 is a longitudinal section of one of the steam jetting devices, shown in the figures named showing more plainly the manner in which the guard wires are connected to it at 100 its forward end. Fig. 5 is a broken end view of one of the steam jetting devices shown in the figures named. Fig. 6 is a broken longitudinal section of the conveyer tube as pro2

495,359 vided with guard wires, but having only one steam jetting device. Fig. 7 is a longitudinal section of the improved steam jetting devices arranged in tandem or procession, constructed 5 without guard wires, and adapted for conveying coal dust, culm or the like. Fig. 8 is a broken longitudinal section of the invention as illustrated in Fig. 7, but showing the conveying tube constructed of sections having io different diameters and provided with steam jetting devices also of different diameters, arranged in tandem or procession. Fig. 9 is a longitudinal section of a straight conveying tube with steam jetting devices changed in 15 form, and arranged in tandem. Fig. 10 is a similar section, the conveying tube being changed in shape. Fig. 11 is a vertical transverse section aud broken view, illustrating my invention as connected with furnaces and 20 a receiving house or chamber. Fig. 12 is a top view of a deflecting device used in the house or chamber, and Fig. 13 is a cross section of the same.

Ain the drawings represents furnace walls; 25 B grates; C boilers; D ash pits; E main steam pipe, and F the steam supply pipe for steam jetting devices G G'; II plugged ash discharging passages in the bottom of the ash pits near the front of the furnace wall or in the 30 hearth or gang-way, outside of said furnace walls, and I a conveying tube in communication with the ash pits, and open for entrance of air at one end and for the discharge of the substances conveyed through it at the other 35 end.

Within the tube I, two or more of the steam jetting devices G G' are arranged in tandem or in procession, and each of these steam jetting devices is connected to the steam supply 40 pipe F. The steam supply pipe of each steam jetting device may be connected to one common source of supply, as shown, or each jetting device may have its own supply pipe, and the same may be connected with a boiler. 45 The steam jetting devices shown in Figs. 1 to 8, are of ring form, and when substances, such as ashes and clinkers, are to be con veyed, it is advantageous to arrange longitudinal guiding, guard wires in a circle within the 5c tube, as illustrated in Fig. 1 and some other figures of the drawings, for the purpose of guiding the clinkers or large pieces out through the center of the steam jetting devices, and of preventinglarge pieces—as clink55 ers—clogging the air tube at the narrower portions of the steam jetting devices, such wires allowing the powdered substances—as ashes—to pass between them and flow along the inner surface of the tube, while the wires 60 prevent larger substances — as clinkers— reaching the inner surface of the tube and passing along said surface, and by accumulation about the steam jetting devices clogging the conveying tube and thus interfering 65 with their operation of creating the necessary suction and inflow of air into the tube for effectively conveying the substances to the discharging end of the tube, or from one steam jetting device to another. These guiding guard wires lie in semi-circular seats a' of the 70 jetting devices, and at one end are hooked into sockets b formed in the discharging end of the steam jetting device, and at the other end are connected to the eye screw bolts c passed through lugs d on the outside of the 75 tube, and receive nuts f on their ends. By this construction and arrangement of the guiding guard wires, they stand off from the inner surface of the tube, leaving an air and ash passage between themselves and the tube, 80 and forming a central open conductor for clinkers, and they can be drawn up taut by turning the nuts/.

In Fig. 2 the steam jetting device proper Comprises two jetting rings, instead of a sin- 85 gle ring, as in some of the other figures. When this construction is adopted the diameter of the inner ring will be of much smaller diameter than the outer ring, while the outer ring will be of much smaller diameter than 90 the conveyer tube; and the open-work guarding and guiding device will be of about the diameter of the inner ring, and said guarding device will discharge the larger particles through said ring, while the powdered sub- 95 stances passing through the wires of the guarding and guiding device will pass out between the rings, and also between the outer ring and the tube, and thus clogging is not liable to occur between either the outer ring 100 and the inner ring, or the outer ring and the tube. The jetting device formed with two or more rings having steam communication with one another will greatly augment the force of the blast; but while this is the case my in- 105 yention does not necessarily require that each jetting device shall have more than one ring to constitute a jetting device proper. The arrangement of the steam jetting devices in tandem or in procession at proper distances no apart, as illustrated and supplying each with steam under pressure, causes them to co-operate together for the continuous expulsion of the air from the delivery end of the tube, including that portion of the tube in which 115 they are located; the rear or first one discharging its continuous steam force, and the consequent volume of air moved forward by the propelling action of the said steam, into the suction of the one forward of it, and so 120 on; each one thus becoming an auxiliary to the others, thus effecting the removal to a great extent the atmospheric pressure from the air in the receiving portion of the tube, which air is in turn continuously pushed for- 125 ward through the tube by atmospheric pressure to fill the vacuum or partial vacuum caused by the combined action of the two or more steam jets in the delivery section of the tube, thus producing a current of air through 130 .the entire tube of sufficient strength and velocity to convey rapidly and continuously certain quantities of light substances such as ashes, clinkers, coal dust, culm and the like,

495,359 that may be introduced into the receiving end or section of the tube, and deliver the same upon a heap or into a receiving chamber or house to be hauled away.

In the drawings different shaped tubes are shown, and in practice any one of the forms found best may be adopted. In Fig. 7, the tube, is not provided with the passages for forming a communication with the ash pits ro or furnaces, but at its receiving end a conducting hopper J is placed over the funnelshaped mouth of the tube, and through the hopper, coal dust, culm and the like may be passed into the tube and conveyed by means 15 of air sucked in the tube by the steam jetting devices arranged in tandem or procession. In Figs. 9 and 10, tubes of different shapes, and provided with jetting devices consisting of a single jet nozzle and arranged in tandem, 20 and each connected with a source of steam supply, are shown. In Fig. 8, the tube is constructed of sections differing in diameter from one.another, and provided with ring shaped jetting devices of different diameters corre25 spending respectively to the respective diameters of the tube, said steam jetting devices being placed so as not to obstruct the passage of coal dust, culm and the like; and in Fig. 6 the tube is provided with guiding, guard 30 wires as in Figs. 1, 2, 3 and 4, but only one steam jetting device is represented. This view is only shown in order to illustrate that it is contemplated to apply the feature of invention consisting of the guiding, guard wires 35 to conveying tubes having steam jetting devices arranged tandem or in procession.

In Fig. 11, a receiving house or chamber is represented. The ceiling- of this house or chamber is shown constructed of wire screens 40 packed with mineral wool which is fire proof, and porous enough to allow air to pass through if, but not to any serious extent permit ashes to pass through it to the air vent or passage g, left between it and the elevated roof. The 45 side walls of this chamber may also be constructed of wire screens faced with mineral wool for a like purpose. Beneath the ceiling, a deflector I for downwardly directing the discharged material maybe provided, and below 50 this , deflector an inclined chute or floor M, leading out of the side of the house, may be arranged as shown.