US1553760A - Charging machine for pipe mills - Google Patents

Description

Sept. 15, 1925. 1,553,760

F L ELLJS CHARGING. MACHINE FOR PIPE MTLLS Filed March 1924 3 Sheets-Sheet 1 I'NVENTUI? W'TA/ESSES I [076W ZWA 566w Sept. 15, 1925' 1,553,760

F. l. ELLIS CHARGING MACHINE FOR PIPE MILLS Filed March 5, 1924 3 Sheets-Sheet 2 FIG. III.

lNl/ENTOR w/ TNEssEs 51. xawazaw f X Sept. 15, 1925 F. I. ELLIS CHARGING MACHINE FOR PIPE] MILLS F iled March ic,

1924 3 Sheets-Sheet r/// I I m/ W Q f 1 0% M/ M U m M J M 7 WITNESSES Patented Sept. 15, 1925 UNITED STA m 1-. ELLIS, or museums, rmmsszwmm. I

CHARGING MACHINE' PI PE MILLS.

Application fileilMarc'h 5,1924. Serial No. 697,023.

Toall whom it may concern.- Be it known that I, FRANK I. ELLrs, residing at Pittsburgh, in the county: of Adlegheny and State of Pennsylvanizna citizen 5 of the United States, have invented or discovered certain new and useful Improvements in Charging Machines for Pipe Mills,

of which improvements the following is a specification. V v 1 My invention relates to improvements in charging machines ,for heating furnaces used in conjunction with pipe mills. The object in view is to cause the article which is being conveyed to be more perfectly responsive to the driving impulse which the table imparts to it, 7

. A charging machine adapted for 1186111 connection with a pipe-mill furnace is illustrated in the accompanying drawings. Fig. I is a view of the machine in plan from above. Fig. II isaview of itin side elevation. f Figs.- III and IV are views-in detail drawn to a larger scale; bot-h of theseare views-in vertical section {the plane of section in Fig.- III is longitudinal with respect to the machine, and therplane of section in Fig. IV is transverse with-respect to the machine. In Fig. IV the plane of section for Fig. III is indicated by the dotted line III"-II I, and similarly in Fig. III, the plane of section for Fig. IV is indicated by the dotted line II 1V. Fig. V is a View in plan from above of the assembl I of Figs. III and IV. Figs. VI and VII s ow in plan from above, and in transverse vertical section, a modification of the nozzle which forms part of the structure of Figs. III and V. Figs. VIII and IX show in longitudinal and transverse sections a roller for the machine modified in its structure, and in itself containing the feature in which my invention resides.

Referring first to Figs. I and II, the table of the charging machine is there shown to be composed of a succession of rollers 1, 2, 3, and 4, set in parallelism, and in this case arranged in pairs, the rollers of each pair arranged at relatively short intervals one from another. These rollers are all of them positively driven upon stationary axes by such means as are indicated in Fig. I, or equivalent means, and all of the rollers are driven uniformly in direction and speed. The rollers of such a conveyor, so driven, are commonly spoken of as live rollers. The source of power in this instance is shown to be a motor 5. Understanding the rollers to be rotating in anticlockwise direction as seen in Fig. II, it it will be understood that the table is then active to carry in right to left direction,

articles laid upon it. 'A ski'dway formed of a succession of angle bars 6, 7 8, 9., l0, and 11 is shown, adapted to receive and carry material "in preparation for placement upon the 'tableitself, In Figs. II and III ap ile of skelp S is shown to be resting upon this skid'way. In the operation of: the mill: it will be understood that such a pile of skelp is assembled on the skidway adjacent. to the table and that attendant workmen remove the skelp one by one (or two by two, if preferred), from the pile, and place them upon the table, by which they are al'ito matically carried to the furnace.

The: problem is to. cause the skelp to be freely responsive to. the impulsion of the table. Skelp is relatively long and relatively fleiiihle I'naterial,v and itis desirable that it shall receiveimmediately and from and to end, or a proximately so, the impulion of "the table, to the, end that it shall advance smoothly. and acquire momentum to carry it tothe desiredplace, as for example, to the hearthof a heating furnace. I

In my invention is found a succession of nozzles 12 arranged between the rollers of each pair, and I connect these nozzles through an eyacuat ionpipe 13, and I cause air-to be; exhausted through the pipe 13, to the end that suction shall be exerted upon the article which shall overlie the nozzle.

Referring particularly to Figs. III and IV, it will be seen that the nozzles 12 have an intake which extends in substantially horizontal plane, and the plane is substantially coincident with the plane tangent to the upper surfaces of both of the adjacent rollers. The intake furthermore is formed as a grid; and, with attention directed upon Figs. III and IV, it will be understood that when skelp A taken from the pile S is laid upon the rollers 1 and 2, it will overlie the nozzle 12, and that'because of the suctionexerted through this nozzle, the skelp A will be the more closely held in. tangency upon the roller surfaces, andbe more immediately and entirely responsive to the drive which the rollers impart to it, impelling it in right to left direction (Figs. II, III).-

Comparing Figs. VI and VII with Figs. I

V and IV, it will be perceived that the nozzles may be modified in shape and provided with a stopor abutment at 14. Speaking with more precision, the grid with which the nozzle is equipped may be removable, and in place of the grid shown in Figs. IV and V, such a grid as that shown in Figs. VI and VII may be introduced. The grid in the latter case has two features; one is that the effective area of the nozzle is reduced, increasing the suction effect, the other is that the stop 14 is provided against which the applied skelp may be aligned, and in consequence, caused to advance in an accurately defined course.

In the modification illustrated in Figs. VIII and IX, the suction nozzle is merged in the formation of the roller itself. Here the roller takes the form of a hollow drum 15, and the cylindrical face of this hollow drum is of grid form. Concentrically mounted within the drum is a non-rotatable nozzle 16, with a suction connection 17. The hollow drum is rotatedand serves to impel the skelp, and always as it rotates there is a suction effect at the highest point, where skelp rests upon it, and so the same general end is achieved as in the form shown in the earlier figures. V

In speaking of the structures of Figs. III and IV, I said that the intake of the nozzle extended in a plane substantially coincident with the plane tangent to the adjacent rollers 1 and 2. It is, in point of fact, disposed slightly lower than that tangent plane, for thus the skelp may be held more effectively to contact with the rollers.

I should have said before, in speaking of the table as shown in Figs. I and II, that it is a movable table, mounted upon tracks 18, and that it carries motor 19, by which it may be shifted along the tracks from place to place. At one point it may receive from the cooling beds of a rolling-mill its load of skelp in the form of the pile S, and at another point it may deliver its load, piece by piece, in the manner described, to the heating furnace of a welding machine.

I claim as my invention:

1. In a charging machine for a pipe mill in combination with a plurality of rollers positively rotated upon stationary axes and adapted to drive forward skelp resting upon them, s'uction means acting from beneathupon the applied material, and holding it to firmer contact with the rollers.

2. In a charging machine for a pipe mill a conveyor table formed of live rollers, each positively rotated upon a stationary axis, and suction means including a nozzle arranged beneath the pathway of advance of material upon the conveyor table.

3. In a charging machine for a pi e mill a conveyor table consisting of a p urality of rollers positively rotated upon stationary axes and arranged in parallel succession, means for feeding a skelp to such conveyor table in a direction parallel to the axes of the roller, and a succession of suction devices, each including a nozzle arranged beneath the pathway of advance of the material upon the conveyor table and at successive points in the length of the conveyor table.

4. In a charging machine for a pipe mill, a conveyortable formed of live rollers, each turning upon a stationary axis, said rollers adapted to receive and to sustain and to impel skelp resting by gravity upon them, one of said rollers being hollow and provided with an orificed surface, in combination with means for exerting suction through the orificed surface of the roller last named upon skelp resting by gravity upon it.

In testimony whereof I have hereunto set my hand.

FRANK I. ELLIS.

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