US3834764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core breaking means
Assignee: Cincinnati Mine Machinery Co
•
Filing: 1972-08-11
•
Granted: 1974-09-10
•
Expires: 1992-08-11
Abstract
Abstract Core breaking means for use with mining machines and the like of the type having cutter bits and mounting means therefor. The core breaking means are mounted on the cutter bit mounting means and provide core cutting or breaking tips to one or both sides of the cutter bit. The core breaking means for each cutter bit mounting means may comprise a pair of separate elements, or they may comprise a single, integral, unitary structure. Finally, the core breaking means may constitute an integral part of the cutter bit.
Inventors
- 👤 C Krekeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:15
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/183; E21C35/1833
Claims Analysis
Total Claims: 83
Claim 1
Independent Claim
131 words
A core breaking means for use on the mounting means of a cutter bit of a mining machine and the like, said mining machine being of the type wherein a plurality of said cutter bits and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said core breaking means comprising a body mountable on said mounting means and having at least one core breaking tip located to at least one side of said cutter bit when said core breaking means is mounted on said mounting means whereby to fracture a core formed to said at least one side of said cutter bit during the cutting operation and to prevent wear of said mounting means by said core.
Claim 2
Dependent Claim
131 words
A core breaking means for use on the mounting means of a cutter bit of a mining machine and the like, said mining machine being of the type wherein a plurality of said cutter bits and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said core breaking means comprising a body mountable on said mounting means and having at least one core breaking tip located to at least one side of said cutter bit when said core breaking means is mounted on said mounting means whereby to fracture a core formed to said at least one side of said cutter bit during the cutting operation and to prevent wear of said mounting means by said core.
Claim 3
Dependent Claim
21 words
The structure claimed in claim 1 wherein said core breaking means is configured to be removably mounted on said mounting means.
Claim 4
Dependent Claim
23 words
The structure claimed in claim 2 wherein said core breaking means is configured to have a knock-in, pry-out relationship with said mounting means.
Claim 5
Dependent Claim
40 words
The structure claimed in claim 1 wherein said core breaking means has at least two core breaking tips, said tips being located to either side of said cutter bit when said core breaking means is mounted on said mounting means.
Claim 6
Dependent Claim
32 words
The structure claimed in claim 1 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 7
Dependent Claim
24 words
The structure claimed in claim 5 wherein said core breaking tip is made of a hard cutting alloy and is affixed to said extension.
Claim 8
Dependent Claim
40 words
The structure claimed in claim 1 wherein said body of said core breaking means is configured to be received in a transverse slot in the upper surface of said mounting means and means to maintain said body in said slot.
Claim 9
Dependent Claim
32 words
The structure claimed in claim 7 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 10
Dependent Claim
29 words
The structure claimed in claim 7 including means on said body to be engaged by mechanical means to retain said body in said transverse slot in said mounting means.
Claim 11
Dependent Claim
57 words
The structure claimed in claim 7 wherein said body has a pair of spaced upstanding extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when the body is located in said mounting means slot, a core breaking tip being located on each of said extensions.
Claim 12
Dependent Claim
45 words
The structure claimed in claim 7 wherein said body of said core breaking means has a perforation therethrough, an insert of resilient material being located in said perforation and extending slightly beyond the ends thereof to frictionally engage the walls of said mounting means slot.
Claim 13
Dependent Claim
104 words
The structure claimed in claim 1 wherein said body of said core breaking means is configured to be received in a transverse slot in the upper surface of said mounting means, said mounting means being of the type having a shank receiving perforation adapted to receive the shank portion of a cutter bit, said body of said core breaking means having a hole therein adapted to overlie and be coaxial with said shank receiving perforation, said hole being sized to receive said shank portion of said cutter bit whereby said cutter bit will maintain said core breaking means in position on said mounting means.
Claim 14
Dependent Claim
32 words
The structure claimed in claim 12, wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 15
Dependent Claim
57 words
The structure claimed in claim 12 wherein said body has a pair of spaced upstanding extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said body is located in said mounting means slot, a core breaking tip being located on each of said extensions.
Claim 16
Dependent Claim
147 words
The structure claimed in claim 1 wherein said bOdy of said core breaking means has a first downwardly depending portion adapted to overlie a forward portion of said mounting means, said downwardly depending portion terminating a hook-like configuration to be engaged in a complementary shaped notch extending transversely of said forward portion of said mounting means, said body of said core breaking means having a second horizontal portion adapted to overlie a top portion of said mounting means, said mounting means being of the type having a shank receiving perforation to receive the shank portion of a cutter bit, said second portion of said body of said core breaking means terminating in bifurcations adapted to lie to either side of a cutter bit in said shank receiving perforation whereby said cutter bit will prevent lateral displacement of said core breaking means with respect to said mounting means.
Claim 17
Dependent Claim
32 words
The structure claimed in claim 15 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 18
Dependent Claim
57 words
The structure claimed in claim 15 wherein said body has a pair of spaced upstanding extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said body is located in said mounting means slot, a core breaking tip being located on each of said extensions.
Claim 19
Dependent Claim
29 words
The structure claimed in claim 1 wherein said body of said core breaking means is of U-shaped configuration, the legs of said U-shaped body terminating in core breaking tips.
Claim 20
Dependent Claim
38 words
The structure claimed in claim 1 wherein said core breaking means comprises an elongated hard alloy insert pointed at one end, said insert being mountable in a perforation in a surface of said mounting means subject to coring.
Claim 21
Dependent Claim
60 words
The structure claimed in claim 1 wherein said core breaking means comprises a shank provided at one end with a conical core breaking head, a gauge determining shoulder formed at the juncture of said shank and said head, said shank being mountable in a perforation in a downwardly and forwardly sloping surface at the forward end of said mounting means.
Claim 22
Dependent Claim
23 words
The structure claimed in claim 20 wherein said conical head of said core breaking means is provided with a hard cutting alloy tip.
Claim 23
Dependent Claim
21 words
The structure claimed in claim 20 wherein said core breaking means in its entirety is made of a hard cutting alloy.
Claim 24
Dependent Claim
38 words
The structure claimed in claim 20 wherein said shank of said core breaking means is of circular cross section and so sized as to be rotatable in said perforation in said downwardly and forwardly sloping mounting means surface.
Claim 25
Dependent Claim
33 words
The structure claimed in claim 23 wherein said shank of said core breaking means has an annular notch therein to be engaged by a retaining means for maintaining said shank in said perforation.
Claim 26
Dependent Claim
22 words
The structure claimed in claim 1 wherein said core breaking means in its entirety is made of a hard cutting metal alloy.
Claim 27
Dependent Claim
53 words
The structure claimed in claim 1 wherein said body of said core breaking means comprises a cutter bit of the non-rotatable type having a shank portion and a head portion provided with a hard cutting tip, said head portion of said bit having at least one lateral extension bearing said core breaking tip.
Claim 28
Dependent Claim
32 words
The structure claimed in claim 26 wherein said head portion of said cutter bit has a lateral extension to either side thereof, each of said lateral extensions bearing a core breaking tip.
Claim 29
Dependent Claim
155 words
The combination of a mounting means for a cutter bit of a mining machine and the like and a core breaking means for use thereon, said mining machine being of the type wherein a plurality of said cutter bits and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said mounting means having a perforation therein to receive the shank portion of a cutter bit, said core breaking means comprising a body mountable on said mounting means and having at least one core breaking tip located to at least one side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means whereby to fracture a core formed to said at least one side of said cutter bit during the cutting operation and to prevent wear of said mounting means by said core.
Claim 30
Dependent Claim
155 words
The combination of a mounting means for a cutter bit of a mining machine and the like and a core breaking means for use thereon, said mining machine being of the type wherein a plurality of said cutter bits and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said mounting means having a perforation therein to receive the shank portion of a cutter bit, said core breaking means comprising a body mountable on said mounting means and having at least one core breaking tip located to at least one side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means whereby to fracture a core formed to said at least one side of said cutter bit during the cutting operation and to prevent wear of said mounting means by said core.
Claim 31
Dependent Claim
18 words
The structure claimed in claim 28 wherein said core breaking means is removably mounted on said mounting means.
Claim 32
Dependent Claim
22 words
The structure claimed in claim 29 wherein said core breaking means is mounted on said mounting means with a knock-in, pry-out relationship.
Claim 33
Dependent Claim
44 words
The structure claimed in claim 28 wherein said core breaking means has at least two core breaking tips, said tips being located to either side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means.
Claim 34
Dependent Claim
42 words
The structure claimed in claim 28 wherein said mounting means comprises a block-like structure with forward and rearward ends, a pair of sides, a top and a bottom, said shank receiving perforation extending downwardly into said block-like structure from the top thereof.
Claim 35
Dependent Claim
48 words
The structure claimed in claim 32 wherein said mounting means has a transverse slot in the top thereof extending from one of said sides to the other, said body of said core breaking means being mounted in said slot and means to maintain said body in said slot.
Claim 36
Dependent Claim
32 words
The structure claimed in claim 33 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extensions.
Claim 37
Dependent Claim
67 words
The structure claimed in claim 33 wherein said body of said core breaking means has a pair of spaced extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means and a core breaking tip being located on each of said extensions.
Claim 38
Dependent Claim
25 words
The structure claimed in claim 33 wherein said transverse slot is located between said shank receiving perforation and said forward end of said mounting means.
Claim 39
Dependent Claim
45 words
The structure claimed in claim 36 wherein said body of said core breaking means has a perforation therethrough, an insert of resilient material being located in said perforation and extending slightly beyond the ends thereof to frictionally engage the walls of said mounting means slot.
Claim 40
Dependent Claim
90 words
The structure claimed in claim 36 including a first longitudinal hole in said mounting means extending from said forward end thereof to said transverse slot, a second longitudinal hole coaxial with said first hole and extending from said slot to said shank receiving perforation, a third hole in said body of said core breaking means in coaxial alignment with said first and second holes, a pin extending through said third hole and into said first and second holes to retain said core breaking means body in said mounting means slot.
Claim 41
Dependent Claim
25 words
The structure claimed in claim 33 wherein said transverse slot is located between said shank receiving perforation and said rearward end of said mounting means.
Claim 42
Dependent Claim
47 words
The structure claimed in claim 39 wherein said body of said core breaking means is of U-shaped configuration, the legs of said U-shaped body terminating in core breaking tips, said body being located in said slot with said tips to either side of said shank receiving perforation.
Claim 43
Dependent Claim
61 words
The structure claimed in claim 33 wherein said transverse slot intersects said shank receiving perforation, said body of said core breaking means having a hole therethrough overlying said shank receiving perforation, said hole being so sized as to receive said shank portion of a cutter bit whereby said cutter bit will maintain said core breaking means in position in said slot.
Claim 44
Dependent Claim
32 words
The structure claimed in claim 41 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 45
Dependent Claim
67 words
The structUre claimed in claim 41 wherein said body of said core breaking means has a pair of spaced extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means and a core breaking tip being located on each of said extensions.
Claim 46
Dependent Claim
31 words
The structure claimed in claim 33 including a cutter bit mounted in said shank receiving perforation, said cutter bit comprising said means to maintain said core breaking means in said slot.
Claim 47
Dependent Claim
103 words
The structure claimed in claim 32 wherein said body of said core breaking means has a first downwardly depending portion overlying said forward end of said mounting means, said forward end of said mounting means having a transverse hook-shaped notch therein, said first portion of said core breaking means body terminating in a hook-shaped configuration engaged in said slot in said forward end of said mounting means, said body of said core breaking means having a second horizontal portion adapted to overlie said top of said mounting means, said second portion terminating in bifurcations lying to either side of said shank receiving perforation.
Claim 48
Dependent Claim
32 words
The structure claimed in claim 45 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 49
Dependent Claim
67 words
The structure claimed in claim 45 wherein said body of said core breaking means has a pair of spaced extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means and a core breaking tip being located on each of said extensions.
Claim 50
Dependent Claim
20 words
The structure claimed in claim 45 including a cutter bit mounted in said shank receiving perforation and between said bifurcations.
Claim 51
Dependent Claim
53 words
The structure claimed in claim 32 wherein said body of said core breaking means comprises a cutter bit of the non-rotatable type having a shank portion and a head portion provided with a hard cutting tip, said head portion of said bit having at least one lateral extension bearing said core breaking tip.
Claim 52
Dependent Claim
32 words
The structure claimed in claim 49 wherein said head portion of said cutter bit has a lateral extension to either side thereof, each of said lateral extensions bearing a core breaking tip.
Claim 53
Dependent Claim
49 words
The structure claimed in claim 32 wherein said core breaking means comprises a hard alloy insert pointed at one end, said insert being mounted in a perforation at the juncture of said top and said forward end of said mounting means with said pointed end extending beyond said perforation.
Claim 54
Dependent Claim
39 words
The structure claimed in claim 51 including at least two of said inserts mounted in perforations at said juncture and located to one side of a cutter bit when said cutter bit is mounted in said shank receiving perforation.
Claim 55
Dependent Claim
44 words
The structure claimed in claim 51 including at least two of said inserts mounted in perforations at said juncture and so positioned as to be located to either side of a cutter bit when said cutter bit is mounted in said shank receiving perforation.
Claim 56
Dependent Claim
74 words
The structure claimed in claim 32 including a downwardly and forwardly sloping surface on said mounting means between said top and said forward end thereof, said core breaking means comprising a shank provided at one end with a conical core breaking head, a gauge determining shoulder formed at the juncture of said shank and head of said core breaking means, said core breaking means shank being mounted in a perforation in said sloping surface.
Claim 57
Dependent Claim
46 words
The structure claimed in claim 54 including at least two of said core breaking means mounted in perforations in said sloping surface and so positioned as to be located to both sides of a cutter bit when said bit is mounted in said shank receiving perforation.
Claim 58
Dependent Claim
23 words
The structure claimed in claim 54 wherein said conical head of said core breaking means is provided with a hard cutting alloy tip.
Claim 59
Dependent Claim
21 words
The structure claimed in claim 54 wherein said core breaking means in its entirety is made of a hard cutting alloy.
Claim 60
Dependent Claim
38 words
The structure claimed in claim 54 wherein said shank of said core breaking means is of circular cross section and so sized as to be rotatable in said perforation in said downwardly and forwardly sloping mounting means surface.
Claim 61
Dependent Claim
33 words
The structure claimed in claim 58 wherein said shank of said core breaking means has an annular notch therein to be engaged by a retaining means for maintaining said shank in said perforation.
Claim 62
Dependent Claim
32 words
The structure claimed in claim 28 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 63
Dependent Claim
24 words
The structure claimed in claim 60 wherein said core breaking tip is made of a hard cutting alloy and is affixed to said extension.
Claim 64
Dependent Claim
40 words
The structure claimed in claim 28 wherein said mounting means has a transverse slot in the upper surface thereof, said body of said core breaking means being mounted in said slot and means to maintain said body in said slot.
Claim 65
Dependent Claim
32 words
The structure claimed in claim 62 wherein said body of said core breaking means has at least one upstanding extension, said at least one core breaking tip being located on said extension.
Claim 66
Dependent Claim
60 words
The structure claimed in claim 62 wherein said body has a pair of spaced upstanding extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said body and a cutter bit are mounted on said mounting means, a core breaking tip being located on each of said extensions.
Claim 67
Dependent Claim
67 words
The structure claimed in claim 28 wherein said body of said core breaking means has a pair of spaced extensions thereon, said extensions being so positioned on said body as to be located to either side of said cutter bit when said core breaking means and a cutter bit are mounted on said mounting means and a core breaking tip being located on each of said extensions.
Claim 68
Dependent Claim
25 words
The structure claimed in claim 65 wherein said core breaking tips are made of hard cutting metal alloy and are permanently affixed to said extensions.
Claim 69
Dependent Claim
17 words
The structure claimed in claim 28 including a non-rotatable cutter bit mounted in said shank receiving perforation.
Claim 70
Dependent Claim
17 words
The structure claimed in claim 28 including a rotatable cutter bit mounted in said shank receiving perforation.
Claim 71
Dependent Claim
38 words
The structure claimed in claim 28 wherein said core breaking means comprises an elongated hard alloy insert pointed at one end, said insert being mounted in a perforation in a surface of said mounting means subject to coring.
Claim 72
Dependent Claim
21 words
The structure claimed in claim 69 including a plurality of said inserts mounted in a plurality of perforations in said surface.
Claim 73
Dependent Claim
67 words
The structure claimed in claim 28 wherein said core breaking means comprises a shank provided at one end with a conical core breaking head, a gauge determining shoulder formed at the juncture of said shank and said head, said mounting means having a downwardly and forwardly sloping surface near the forward end thereof, said core breaking means shank being mounted in a perforation in said sloping surface.
Claim 74
Dependent Claim
30 words
The structure claimed in claim 71 wherein said shank of said core breaking means is of circular cross section and is rotatively mounted in said perforation in said sloping surface.
Claim 75
Dependent Claim
22 words
The structure claimed in claim 28 wherein said core breaking means in its entirety is made of a hard cutting metal alloy.
Claim 76
Dependent Claim
145 words
A mounting means for a cutter bit and a core breaking means of a mining machine and the like wherein the cutter bit is of the type having a shank portion and a hard cutting tip and the core breaking means is of the type having a body presenting at least one core breaking tip to at least one side of said cutter bit when mounted on said mounting means and said mining machine is of the type wherein a plurality of said cutter bitS and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said mounting means comprising a body having a shank receiving perforation to receive said shank portion of said cutter bit, and means on said mounting means to affix said body of said core breaking means thereto.
Claim 77
Dependent Claim
145 words
A mounting means for a cutter bit and a core breaking means of a mining machine and the like wherein the cutter bit is of the type having a shank portion and a hard cutting tip and the core breaking means is of the type having a body presenting at least one core breaking tip to at least one side of said cutter bit when mounted on said mounting means and said mining machine is of the type wherein a plurality of said cutter bitS and mounting means therefor are affixed on a driven element of the mining machine in staggered patterns therealong to follow parallel paths of travel, said mounting means comprising a body having a shank receiving perforation to receive said shank portion of said cutter bit, and means on said mounting means to affix said body of said core breaking means thereto.
Claim 78
Dependent Claim
24 words
The structure claimed in claim 74 wherein said mounting means has a transverse slot therein to receive said body of said core breaking means.
Claim 79
Dependent Claim
48 words
The structure claimed in claim 75 wherein said mounting means comprises a block-like structure having a forward end, a rearward end, a top, a bottom and a pair of sides, said transverse slot being located in said top and extending from one of said sides to the other.
Claim 80
Dependent Claim
14 words
The structure claimed in claim 76 wherein said slots intersects said shank receiving perforation.
Claim 81
Dependent Claim
65 words
The structure claimed in claim 74 wherein said core breaking means is of the type comprising an elongated body terminating in a hard cutting tip, said mounting means having at least one hole therein to receive said elongated body of at least one of said core breaking means, said at least one hole being located in a surface of said mounting means subject to coring.
Claim 82
Dependent Claim
44 words
The structure claimed in claim 78 wherein said mounting means comprises a block-like structure having a forward end, a rearward end, a top, a bottom and sides, said at least one hole being located at the juncture of said top and said forward end.
Claim 83
Dependent Claim
23 words
The structure claimed in claim 79 wherein said juncture comprises a surface sloping downwardly and forwardly between said top and said forward end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |