Crusher

Claim 2

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; and means for separately feeding material to be crushed to each of the bites.

Claim 3

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll meanS characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; and means for separately feeding material to be crushed to each of the bites; and means for screening and conveying the discharge from at least one of said bites and returning to the crusher such portion thereof as needs further crushing, together with screened material newly fed to the crusher.

Claim 4

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll meanS characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; and means for separately feeding material to be crushed to each of the bites; and means for screening and conveying the discharge from at least one of said bites and returning to the crusher such portion thereof as needs further crushing, together with screened material newly fed to the crusher.

Claim 5

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; and means for separately feeding material to be crushed to each of the bites; and means for screening and conveying the discharge from at least one of said bites and returning to the crusher such portion thereof as needs further crushing, together with screened material newly fed to the crusher, with selectivity by size in the delivery to each bite; whereby, when the bites are adjusted for different bite-spacings, coarser material will be crushed only by the coarser of the bites, and finer material only by the finer of the bites.

Claim 6

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; and means for separately feeding material to be crushed to each of the bites; and means for screening and conveying the discharge from at least one of said bites and returning to the crusher such portion thereof as needs further crushing, together with screened material newly fed to the crusher, with selectivity by size in the delivery to each bite; whereby, when the bites are adjusted for different bite-spacings, coarser material will be crushed only by the coarser of the bites, and finer material only by the finer of the bites.

Claim 7

A crusher including: a plurality of crusher roll axles being supported near the ends thereof; support means for their support; a first crushing roll means having a plurality of laterally arranged, adjacent, distinct crushing portions thereon, said first roll means being carried by one of said axles; a plurality of second crushing roll means each being carried by a respective second axle, each of said second axles being individually supported to oppose one of said crushing portions with a normal spacing therebetween; said axle support means including a plurality of bearing means for supporting the second axles with individual movement of each for varying its spacing from the first roll means; means for movably supporting the bearing means, during said movement; resilient biasing means for urging said second roll means toward the first roll means to provide the normal spacing; and means for power rotating each of said rolls for downward movement of the surface thereof at the opposing areas.

Claim 8

A crusher including: a plurality of crusher roll axles being supported near the ends thereof; support means for their support; a first crushing roll means having a plurality of laterally arranged, adjacent, distinct crushing portions thereon, said first roll means being carried by one of said axles; a plurality of second crushing roll means each being carried by a respective second axle, each of said second axles being individually supported to oppose one of said crushing portions with a normal spacing therebetween; said axle support means including a plurality of bearing means for supporting the second axles with individual movement of each for varying its spacing from the first roll means; means for movably supporting the bearing means, during said movement; resilient biasing means for urging said second roll means toward the first roll means to provide the normal spacing; and means for power rotating each of said rolls for downward movement of the surface thereof at the opposing areas.

Claim 9

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form first and second crusher at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; means for separately feeding material to be crushed to each of the biTes; screen means cooperating with the means for separately feeding to feed coarser material to a first of said bites, and finer material, not reduced to size, to a second of said bites adjusted to smaller spacing than the first; the spacings of the first pair and second pair of crusher roll surfaces being independently adjusted for proportioning the crushing work between the two pairs in a manner to keep both pairs substantially fully occupied; conveying means for returning to the screen means for screening, with newly supplied material to be crushed, material which has passed through both bites; and discharge means for discharging from the screen means, without passage through either bite, screened material reduced to size.

Claim 10

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form first and second crusher at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; means for separately feeding material to be crushed to each of the biTes; screen means cooperating with the means for separately feeding to feed coarser material to a first of said bites, and finer material, not reduced to size, to a second of said bites adjusted to smaller spacing than the first; the spacings of the first pair and second pair of crusher roll surfaces being independently adjusted for proportioning the crushing work between the two pairs in a manner to keep both pairs substantially fully occupied; conveying means for returning to the screen means for screening, with newly supplied material to be crushed, material which has passed through both bites; and discharge means for discharging from the screen means, without passage through either bite, screened material reduced to size.

Claim 11

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; means for separately feeding material to be crushed to each of the bites; screen means cooperating with the means for separately feeding to feed coarser material to a first of said bites, and finer material, not reduced to size, to a second of said bites adjusted to smaller spacing than the first; conveying means for returning to the screen means for screening, with newly supplied material to be crushed, material which has passed through both bites; and discharge means for discharging from the screen means, without passage through either bite, screened material reduced to size.

Claim 12

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means at angularly different positions about its axis, each of said second roll means being supported between and by said spaced frame structures with independent adjustment of its normal spacing from the first roll means characterized by: said second roll means cooperating with axially different portions of the first roll means to form crusher bites so positioned that the crushed discharge from each bite is discharged from the crusher without passing through the other bite; means for separately feeding material to be crushed to each of the bites; screen means cooperating with the means for separately feeding to feed coarser material to a first of said bites, and finer material, not reduced to size, to a second of said bites adjusted to smaller spacing than the first; conveying means for returning to the screen means for screening, with newly supplied material to be crushed, material which has passed through both bites; and discharge means for discharging from the screen means, without passage through either bite, screened material reduced to size.

Claim 13

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means bites; bearings for said roll means in each frame, at least one of the second roll means having a bearing adjacent to it in one frame and a bearing in the other frame spaced from it by approximately the axial length of the other second roll means, said bearings being movable toward and from the axis of the crusher roll and yieldably biased toward the crusher roll to normally maintain a predetermined spacing but to move back therefrom when a relatively uncrushable object passes between the rolls; and coupling means for drivably coupling the said second roll means and the crusher roll, said coupling means having limited ability to maintain effective coupling in spite of yielding of the yieldable means, and being associated with the bearing which is more remote from its roll means and of which the yieldable means therefore yields least.

Claim 14

A crusher for rock and the like including a pair of spaced frame structures, a full width crusher roll means extending between and supported by the frame structures, a plurality of second roll means cooperating with the first roll means bites; bearings for said roll means in each frame, at least one of the second roll means having a bearing adjacent to it in one frame and a bearing in the other frame spaced from it by approximately the axial length of the other second roll means, said bearings being movable toward and from the axis of the crusher roll and yieldably biased toward the crusher roll to normally maintain a predetermined spacing but to move back therefrom when a relatively uncrushable object passes between the rolls; and coupling means for drivably coupling the said second roll means and the crusher roll, said coupling means having limited ability to maintain effective coupling in spite of yielding of the yieldable means, and being associated with the bearing which is more remote from its roll means and of which the yieldable means therefore yields least.