US1020706A - Intermediate belt conveyer for sugar-cane mills. - Google Patents

Description

1. P. KIMBALL & R. J. PRATT. INTERMEDIATE BELT CONVEYER FOR SUGAR CANE MILLS.

APPLIOATION FILED JULY 30,1909. Patented Mar. 19, 1912.

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COLUMBIA PLANOGRAPH cm, WASNINUTON. n. C.

I. P. KIMBALL & R. J. PRATT.

I INTERMEDIATE BELT GONVEYER FOR SUGAR CANE MILLS.

APPLICATION FILED JULY 30, 1909.

1,020,706, Patented Mar. 19, 1912.

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:OLUMBIA PLANOGRAPH co" WASHINGTON. 04 CI 1 N 1TB SAIEZS PA TENT OFFICE.

IRWIN P. KIMBALL AND ROBERT J. PRATT, OF HONOLULU, TERRITORY OF HAWAII, ASSIGNORS TO HONOLULU IRON WORKS COMPANY, OF HONOLULU, TERRITORY OF HAWAII, A CORPORATION OF THE TERRITORY OF HAWAII.

INTERMEDIATE BELT CONVEYER FOR SUGAR-CANE MILLS.

Specification of Letters Patent.

Application filed July 30, 1909.

Patented Mar. 19, 1912.

Serial No. 510,436.

To all whom it may concern:

Be it known that we, IRWIN P. KIMBALL and ROBERT J. PRATT, citizens of the United States, residing at Honolulu, county of Honolulu, Territory of Hawaii, have invented certain new and useful Improvements in Intermediate Belt Conveyers for Sugar-Cane Mills; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in conveyers between sugar-cane mills for conveying the crushed cane from one mill and feeding it to the next mill; and particularly to such conveyors in which a canvas or other continuous belt is employed instead of the usual slat apron.

The object of our improvements is to produce an improved take-up device whereby continuous belts of a uniform length may be used for any one of the varying lengths of intermediate conveyers of a nine or twelve roll sugar-cane mill.

The surface speeds of the rolls of a nine or a twelve roller sugar-cane mill are usually slightly increased from the first to the last mill successively. This is accomplished by slight changes in the number of teeth of the gears driving the mills, which causes the distances from center to center of mills to vary. In order that continuous belts of uniform lengths may be employed for any one of the conveyors between said mills, a new method of take-up is necessitated.

Another object of our improvements is to produce such a conveyer, which may be easily and quickly assembled or dismantled.

The invention consists in the construction and novel combination and arrangement of parts hereinafter described, illustrated in the accompanying drawings, and pointed out in the claims.

In the drawings, Figure 1 represents in elevation an intermediate belt conveyer for sugar-cane mills embodying our improvements. Fig. 2 is a sectional view on the line 6-D of Fig. 1. Fig. 3 is an enlarged detail view of a portion of Fig. 1.

Referring to the drawings, the conveyor as a whole is illustrated between mills A and B, for receiving the crushed cane discharged from mill A and for conveying same to feed mill B.

The drum 1, preferably of wood, is secured to the head-shaft 2 journaled in the boxes 8 fastened to the cheeks of mill B. The head-shaft 2 is driven in the usual manner by the mill B,by sprockets 4; and 5 connected by the link belt 6, the surface speed of the drum 1 being proportionate to that of the rolls of mill B. The drum 7 between the discharge side-plates 9 of the mill A, is provided with the trunnions 8. Anangleiron 10, provided withholes 11, is secured to each of the discharge side-plates 9, on the outer and lower edge, as shown. Theboxes 12 are adapted to receive the trunnions 8, and are each provided with aslot 12. Thebolts 18, through theslot 12 andholes 11, clamp thebox 12 under theangle 10. An L shaped bar 14: is bolted to eachangle 10 by thebolts 15 throughholes 11. The screw 16, provided with a lock-nut 17, in thebar 14, is adapted to abut theend 12 of thebox 12. It is obvious that with this construction, the drum 7 may be adjusted along theside plates 9 by turning the screws 16, which push theboxes 12 along the side plates in such a manner as to increase the tension of the belt, as will be understood.

The conveyor side-plates 18 are removably connected at their lower ends to the discharge side-plates 9, in any suitable manner, as bybolts 19 throughholes 20 and 21 in theangles 20 and 21 secured to theplates 9 and 18 respectively. The upper ends of the side-plates 18 are bolted to thebrackets 22 secured to the checks of the mill B in the usual manner. Anangle 23 is riveted to the outside of each side-plate 18, as shown.Notches 18 are cut in the lower edge of eachsideplate 18. Idlerrollers 24 are provided withtrunnions 25 at their ends.Boxes 26, adapted to receive thetrunnions 25, are removably secured to theangle 23 by thebolts 27, thenotches 18 permitting thetrunnions 25 to extend through and beyond thesideplates 18.

A take-up frame 28, preferably made of angle bars bent as shown, and provided withholes 29, is bolted by thebolts 30 to each side-plate 18, and depends therefrom. Adistance bolt 31 may connect the lower ends of theframes 28 to stiffen same. Twodrums 32 33 carried by these U-shaped frames or members are provided withtrunnions 34 35 at their ends respectively.Boxes 36 37, adapted to receive thetrunnions 34 35, and provided withslots 36 37 are bolted by thebolts 38 39 respectively, through theholes 29, to eachframe 28. Theboxes 36, 37 are substantially like thebox 12 previously described, and theslots 36 37 are like theslots 12*. An L shapedbar 14, with screw 16 and lock-nut 17, may also be bolted bybolts 15, throughholes 29, to theframe 28, such that the screw 16 will abut theend 36 of thebox 36. The adjusting screw 16 and its accessories are identical with those previously described in connection with the drum 7, and the adjustment of thetensioning drum 32 is effected in sub stantially the same manner. Thebox 36 is reversible on its side portion of the U- shape frame in such a manner that thedrum 32 may be placed in the position indicated in dotted lines in Fig. 3. Thetensioning drum 33 is not provided with adjusting screws, but it will be noted that the corresponding leg or side of the U-shaped frame member is provided with a plurality ofholes 29 to provide for the vertical adjustment of said drum. This drum is properly adjusted to tension the belt in an approximate fashion when the latter is first put in place, but it is not intended for adjustment during the operation of the conveyer, such as would be permitted by the adjusting means for thedrum 32. It will be under stood, of course, that the provision of theslot 37 in thebox 37 provides for the adjustment of the box within certain limit-s, without placing thebolt 39 in other holes in the frame member.

The drums 7 32 and 33, and therollers 24, are preferably made of tubing for lightness.

Anangle 41 may be bolted to the inner side of each side-plate 18, to clear thebelt 40, and to prevent crushed cane from falling between theedges 40 of said belt and the side-plates 18, Fig. 2.

Both sides of the conveyer are similar but of opposite hand.

Means for cleaning thebelt 40 may be provided. Abrush 42 or other suitable scraper, is supported between the cheeks of mill B and below the drum 1, and prevents crushed cane frombeing carried away from said mill by adhering to thebelt 40; it also prevents the crushed cane from dropping off the feed roller of said mill. If desired, brushes 43 or similar devices, supported bybrackets 44 bolted bybolts 45 to theframe 28, may be employed for cleaning either or both surfaces ofbelt 40. Thebrushes 43 are preferably adjustably supported by the It will now be noted that thecontinuous belt 40 may either run over thedrum 33 and under thedrum 32, as shown by full line, or it may run under thedrum 33 and over thedrum 32, when the latter is raised, as shown by dotted lines, (Figs. 1 and 3) thus giving a wide range of take-up. Thebelt 40 may be made to run true and midway between the side-plates 18 by means of the drum adjustments provided as described. By removing thebolts 27 theidlers 24 may be removed easily and the drum may be removed in a similar manner.

We claim:

1. In an intermediate belt conveyer for sugar cane mills, the combination of an endless conveyer belt, main drums supporting the same, side plates between which the upper run of the belt passes, a frame comprising U-shaped side members depending from said side plates and supported solely thereby, and tensioning drums carried by said frame members and adjustable thereon in opposite directions, the lower run of the belt being passed between said tensioning drums.

2. In an intermediate belt conveyer for sugar cane mills, the combination of an endless conveyer belt, main drums supporting the same, side members between which the upper run of the belt passes, a frame comprising opposite side members bolted. to and depending from said side members aforesaid, and tensioning drums journaled between said depending frame members and. between which the lower run of the belt is passed, one of said drums having bearing boxes with means to give the same positive adjusting movements on the respective frame members.

3. The combination of an endless belt, side plates between which the upper run of said belt is guided, U-shaped members bolted to and depending from said side plates, and tensioning drums journaled in said members and mounted on the side portions thereof, the lower run of the belt being passed between said tensioning drums.

4. In an intermediate belt conveyer for sugar cane mills, the combination of an endless conveyer belt, main drums supporting the same, side plates between which the upper run of the belt passes, a depending frame applied to said side plates and comprising angle bars bent into U-shape and bolted at their ends to the respective side plates, a distance bolt connecting the lower intermediate portions of said bars,and tensioning drums for the belt having boxes adjustable along the side portions of said U- shaped bars, said drums extending across said depending frame and cooperating with the lower run of the belt.

5. The combination of an endless belt, side members between which the belt is guided, depending frames carried by said In testimony whereof we aflix our signaside fIInembers, boxes applied to said dependtures, in presence of two Witnesses.

ing ames and tensioning drums j ournaled in said boiies and extending between said i %iig frames, to .tension the belt at one run of the same, the boxes of at least one of said ten- Witnesses: siomng drums belng reversible 0n the re- P. H. BURNETTE, spective frames. CHARLES PHILLIPS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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