US2417599A - Asbestos fiberizing apparatus - Google Patents

Description

- March 18, 1947. w. J. JOYCE, JR 2,417,599

ASBESTOS FIBERI Z ING APPARATUS Filed Jan. 27, 1944 4 Shoots-Shoot 1 F Z9] g,

March 8. 1947. w. J. JOYCE, JR 2,417,599

ASBESTOS FIBERIZING APPARATUS I Filed Jan. 2'1, 1944- 4 Shani-Shut 2 mmnn &

or lzey.

March 18, 1947. J JQY CE, JR 2,417,599

ASBESTOS FIBERIZING APPARATUS Filed Jan. 27, 1944 4 Sheets-Sheet 3 ay M March 18, 1947. w. J. JOYCE, JR 2,417,599 ASBESTOS FIBERIZING. v iPARA'l'US Filed Jan. '27, 1944 4 Sheets-Shut 4 Patented Mar. 18, 7

UNITED STATES PATENT OFFICE I i 2,417,599 1 v ASBESTOS mnmznsa APPARATUS William J. Joyce, In, Manhelm, Pa... assignor'to Raybestos-Manhattan, Inc., Pascale, N. 1., a w corporation of New Jersey l Application January 27, 1944, Serial Dim 519,894

50mm. (cue-s) This invention relates to improvements in apparatus for reducing particles of asbestos to individualized fibrous form.

It is an object of this invention to fiberize asbestos in a manner whereby crude asbestos is effectively opened to provide a maximum amount of fibres of good length and to avoid undue shearing or damage to the fibres during 'progressive passage through the apparatus and attendant loss or waste. r

In general the apparatus of my inventioncomprises a plurality of spaced horizontally supported rolls alternately provided with longitudinally and circumferentially extending rigid ribs, the ribbed rolls being aligned to act successively on the asbes-i tos during its passage through the apparatus in cooperative relationship with juxtaposed. jointly Fig. 9 is a fragmentary section taken on the line 9-'-9 of Fig. 8.

Referring to the drawings, the form of apparatus illustrated in Figs. 1 tab comprises a housing in within which are'positioned a plurality of pairs of rolls aligned to act successively on the asbestos introduced through hopper I i and chute t2, the latter being provided with suitable vibrating mechanism. diagrammatically indicated at 13 and preferably in the form of an electromagnetic vibrator, to aid in providing a steady flow or blanket of asbestos to the nip of the first pair movable resilient surfaced means, such as for;

example one common or a like number of rubber surfaced rolls. In this manner the crude asbestos is progressively and alternately subjected to cushioned pressure and flexure in the direction-of its movement and transversely thereto, as distinguished from shearing, and as a result injury to the fibre, shorteningof fibre length, and undue production of fines and dust is greatly reduced.

Other objects relate'to the construction of the apparatus and the arrangement-of parts in my illustrated preferred form of construction whereby only one of the juxtaposed moving or rolling surfacesis positively driven and the other driven through frictional yielding engagement, which likewise is conducive to preservation of good fibre length and is oi considerable economy in the construction and operation of the apparatus.

Further objects and advantages will be apparent from a consideration of the following specification and drawings, wherein: I

Fig. 1 is asectional elevation of one form of my apparatus viewed on the line lof- Fi 2.

t Fig. 2 is a sectional elevation taken. on the line 2-2 of H8. 1.

of rolls. One roll ll of each pair is of smooth cylindrical form and composed of, or surfaced with, rubber or similar rubber-like.or rubbery resilient material. These. rolls M are vertically aligned and spaced from each other, their shafts l5 being endwise journalled in bearing blocks 15 slidably mounted in guideways provided on the frame standards i'l-i'l. Each roll I4 is held in yieldable and adjustable frictional engagement with one of its companion ribbed rolls i8 or I! by suitable spring pressed means such as the spring 39 positioned between the bearing block it and the spring seat 2| slidable in the bearing guideway, the latter being adjustable by means of the screw 22 threaded through the guideway cap 23. If desired spring 39 may be omitted and screw 22 permitted to press spring seat 2| directly I against bearing block it.

The second roll of each pair is composed of rigid material, suchas metal, and is provided with like rigid ribs, alternatelrolls i8 and i9 being provided with circumferentially and longi- Fig. 3 is a fragmentary end elevation viewed on the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary transverse section on theiine 4-4 of Fig. 1.

F18. 5 is a sectional detail taken on the line 5-5 of F18. 4.

Fig. 6 is a sectional elevation of a modified form of apparatus taken on the line 5-6 of Fig. 8.

Fig. 7 is a fragmentary sectional detail of one 01' the ribbed rolls and the resilient surfaced roi of the form of apparatus of Fig. 6.

Fig. 8 is a front elevation of the apparatus of Fig. 6 with a section through the housing.

tudinally extending ribs, respectively. The rolls l8 and I! are likewise mounted in vertical spaced 7 relation with their shafts 20 fixedly joumalled in the frame standards lI-i'l within suitable bearin s 24. One end of each of the shafts 20 extends through the side wall of the housing i0.

this outer end portion being further joumalled in a bearing 25 supported in the upright 26, and carries at its outerend a beveled crown gear 2'1. Each of the gears 21 meshes with a beveled pinion gear 28 secured to the vertical common drive shaft 29, the latter being driven through the beveled gears 30, 3|, shaft 32 and pulley 33 supported from the transverse member 34. By causing the ribbed rolls l8 and I9 to be driven in a clockwise direction, crude asbestos introduced to the hopper Ii will be caused to progressively pass between each roll pair and be'progressiveiy acted upon and flberized as previously described. Although not illustrated, means may be provided for positively driving rolls it also.

As indicated in Fig. 2. a scraper 35 may be positioned to act against the surface of each resilient roll l4. inclined towards the nip of the next lower roll pair, to remove surface accumulation and to aid in guiding progressive movement of the asbestos. Instead of scraper 35 a vibrating or rotating beater, not illustrated. may be used to remove surface accumulations of the asbestos. The fiberized asbestos leaving the nip of the lowermost roll' pair passes to the funnel 36 and is blown outwardly through the conduit 31 by means. oi? air introduced through the line 38, which serves not only to remove the fiberized material but also to find up the fibres and sepa- 7 rate them further.

The form of my invention illustrated in Figs.6 to 9 comprises a housing 40 within which there is mounted a roll 4| of relatively large diameter v provided with a smooth cylindrical rubber or the Q 1 the funnel generally indicated as 58 and which comprises a transverse scraper edge 59 acting against the last ribbed roll 46 and an oppositely inclined scraper edge 60 acting against the surface of roll 4|. In place of the latter a vibrating or rotating beater, not illustrated, may be employed to remove surface accumulations of asbestos. From here the asbestos fibers are blown out through conduit Si by means of a blast of air introduced through line 62, which serves not only to remove the fiberized material but also to flui! up the fibers and separate them further.

I claim as my invention:

v 1. An asbestos fiberizing apparatus comprising roll means including a plurality of spaced horizontally supported rolls, alternate rolls being provided with longitudinally extending rigid ribs, intervening rolls being provided with circumferentially extending rigid ribs, said ribbed rolls being aligned to act successively on the asbestos during its passage through the apparatus in eooperative'relationship with juxtaposed resilient cylindrical surfaced'roll means, means yieldably' urging said horizontal roll means and said resilpositively driving at least one of said roll means,

A plurality of'spaced rolls 48 and 41 positioned parallel to each other and to roll 4i and of relatively smaller diameter, all composed of a rigid material such as metal and alternately pro-. vided with circumferentially and longitudinally extending rigid ribs, are supported in juxtaposed vibrating means for introducing asubstantially uniform flow of asbestos to the apparatus, means relation to a forwardly and downwardly moving peripheral portion of roll 4! for successively acting therewith on the crude asbestos to fiberize it during its passage through the apparatus, in the manner previously described. The rolls 48 and 41 are spaced and positioned against somewhat less than 180 of the periphery of roll 4i and the first roll may be positioned somewhat in advance of a vertical plane passing through the axisvof roll 4|, that is, against the still upwardly moving surface thereof.

The ribbed rolls 4B and 41 are held in yieldable and adjustable frictional engagement with the resilient surface 42 of roll 4|.

slidably mounted in radial guideways formed in.

the arcuate upper end portions 4545', of thestandards 45-45. A spring 50 is positioned between each bearing block 49 and spring seat ii, the latter being adjustable by means of a screw 52 threaded through a guidew'ay cap 58. If desired spring 50 may be omitted and screw 52 permitted to press spring seat 5| directly against bearing block 49. Although not illustrated, means may be provided for positively driving the rolls 46 and 41 also.

Crude asbestos is introduced to the housing 40 through the hopper 54 and fed to the surface of roll 4i in the direction of its rotation, and in advance of'the first ribbed roll, by means of the inclined chute 55 aided by a vibrating mechanism "generally indicated at 56. but which preferably is in the form of an electromagnetic vibrator whereby amplitude of vibration may be adjusted to obtain thickness of feeding desired. The asbestos is then fiberized while conveyed on the resilient surface 42 of roll 4|, by being successively sub- Jected to cushioned pressure and flexure alternately in the direction of rotation of the rolls and transversely thereto. If asbestos is fed to the full width of the roll it may be laterally confined thereon by means of roll flanges 51. After leaving the last ribbed roll the fiberized asbestos drops to Each of their shafts 48 are endwise journalled in a bearing block 49 for receiving the resultant fiberized material after it has passed between the roll means, and pneumatic means for removing said resultant fiberized material from said receiving means and for flumn up the fibers and separating them fnrther. I v

2. An asbestos fiberizing apparatus comprising a plurality of pairs of rolls aligned to act successively on the asbestos during its passage through the apparatus, one roll of each pair being ing companion rolls of said pairs being provided with circumferentially extending rigid ribs, means yieldabiy urging one roll of each pair toward its companion roll, and means for driving said rolls.

4. An asbestos fiberizing apparatus comprising a plurality of pairs of rolls aligned to act successively on the asbestos during its passage through the apparatus, one roll of each pair being provided with a resilient cylindrical surface, alternate companion rolls of said pairs being provided with longitudinally extending rigid ribs,

and intervening companion rolls of said pairs being provided with ciroumferentially extending rigid ribs, said resilient rolls being in spaced vertical alignment, said ribbed companion rolls being in juxtaposed spaced vertical alignment,

means for driving said ribbed companion rolls, and means yieldabiy urging said resilient rolls toward their ribbed companion rolls for rotation .thereby.

5. An asbestos fiberizing apparatus comprising roll means including a plurality of spaced horizontally supported rolls, alternate rolls being provided with longitudinally extending rigid ribs, intervening rolls being provided with circumierentiaily extending rigid ribs, said ribbed rolls being aligned'to act successively on the asbestos during its passage through the apparatus in cooperative relationship with juxtaposed resilient cylindrical surfaced roll means, means yieldabiy urging one of said roll means toward the other, means for positively driving at least one of said roll means, means for receiving the resultant fiberlzed material after it has passed between the roll means, and pneumatic means for removin the resultant flberized material Irom said receiving means and for flufllng up the fibers and separating them further.

WILLIAM J. JOYCE, Jud

nmmczs mm The i'ollowina references are oi record in the file of this patent:

UNITED STATES PATENTS Number Name Date 852,503 Green May '1, 1907 1,021,269 Schlichten Mar. 26, 1912 1,315,521 Haddock, et a1. Sept. 9, 1919 2,219,077 Pharo Oct. 22, 1940 305,721 Stietenroth Sept. 23. 1884 1,308,378 Schlichten July 1. 1919

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