Patent US3670972A successfully refreshed from Google Patents.
US3670972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crushing plant
Assignee: JOHNSON WELDING AND EQUIPMENT CO Inc
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Filing: 1971-06-01
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Granted: 1972-06-20
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Expires: 1991-06-01
Abstract
Abstract A crushing plant having elevator means located primary and secondary crushers, each comprising first and second stage crushing devices. Input material is fed into a receiving unit is separated thereby into pieces of finish size which are discharged onto a delivery conveyor, and pieces of two different larger sizes. The latter are separately fed to the primary crusher stages, which discharge onto separate screens located above the delivery conveyor. Carryover material on the screens is separately conducted by means including said elevator to the two secondary crusher stages, which discharge onto a common finish screen member also located above the delivery conveyor.
Inventors
- 👤 John N Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:15
CPC Classifications
B; B02; B02C; B02C21/00; B02C21/02
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
312 words
In a crushing plant, the combination of: A. elongated conveyor means for conducting materials of finish size forwardly to a delivery zone; B. first and second vibratory screens mounted above the conveyor means and extending lengthwise thereof toward one another, said screens being adapted to pass materials of finish size and to vibrationally advance carryover materials thereon toward their adjacent ends to a first low level discharge zone; C. a third vibratory screen intermediate the conveyor means and said first screen, and having a portion extending a distance rearwardly of the latter, said third screen being adapted to pass materials of finish size and to vibrationally advance carryover materials thereon forwardly to a second low level discharge zone adjacent to said first discharge zone; D. elevator means to receive carryover materials conducted to said first and second discharge zones and to elevate the same to respective first and second high level discharge zones; E. primary crusher means behind the elevator means and comprising first and second stage crushing devices one of which discharges crushed material onto the rearwardly extending portion of the third screen and the other of which discharges crushed material onto said first screen; F. a receiving unit located at an input station adjacent to the primary crusher means and having 1. means to separate the largest size pieces from the input material and to feed the same into said first stage crushing device, 2. and means to separate the next largest size pieces from the input material and to feed them into said second stage crushing device; G. secondary crusher means located ahead of the elevator means and comprising first and second stage crushing devices both of which discharge onto said second screen; H. and means for separately conducting materials from said high level discharge zones to said first and second stage crushing devices of the secondary crusher means.
Claim 2
Dependent Claim
312 words
In a crushing plant, the combination of: A. elongated conveyor means for conducting materials of finish size forwardly to a delivery zone; B. first and second vibratory screens mounted above the conveyor means and extending lengthwise thereof toward one another, said screens being adapted to pass materials of finish size and to vibrationally advance carryover materials thereon toward their adjacent ends to a first low level discharge zone; C. a third vibratory screen intermediate the conveyor means and said first screen, and having a portion extending a distance rearwardly of the latter, said third screen being adapted to pass materials of finish size and to vibrationally advance carryover materials thereon forwardly to a second low level discharge zone adjacent to said first discharge zone; D. elevator means to receive carryover materials conducted to said first and second discharge zones and to elevate the same to respective first and second high level discharge zones; E. primary crusher means behind the elevator means and comprising first and second stage crushing devices one of which discharges crushed material onto the rearwardly extending portion of the third screen and the other of which discharges crushed material onto said first screen; F. a receiving unit located at an input station adjacent to the primary crusher means and having 1. means to separate the largest size pieces from the input material and to feed the same into said first stage crushing device, 2. and means to separate the next largest size pieces from the input material and to feed them into said second stage crushing device; G. secondary crusher means located ahead of the elevator means and comprising first and second stage crushing devices both of which discharge onto said second screen; H. and means for separately conducting materials from said high level discharge zones to said first and second stage crushing devices of the secondary crusher means.
Claim 3
Dependent Claim
75 words
and means to separate the next largest size pieces from the input material and to feed them into said second stage crushing device; G. secondary crusher means located ahead of the elevator means and comprising first and second stage crushing devices both of which discharge onto said second screen; H. and means for separately conducting materials from said high level discharge zones to said first and second stage crushing devices of the secondary crusher means.
Claim 4
Dependent Claim
75 words
and means to separate the next largest size pieces from the input material and to feed them into said second stage crushing device; G. secondary crusher means located ahead of the elevator means and comprising first and second stage crushing devices both of which discharge onto said second screen; H. and means for separately conducting materials from said high level discharge zones to said first and second stage crushing devices of the secondary crusher means.
Claim 5
Dependent Claim
40 words
The crushing plant of claim 1, further characterized in that said primary crusher means comprises first and second stage crushing devices which respectively discharge crushed material onto the rearwardly extending portion of the third screen and onto said first screen.
Claim 6
Dependent Claim
119 words
and the third screen being adapted to discharge its carryover material into the receiving portion of the other elevator device; D. means for conducting material from the discharge portion of one of said elevator devices to the crushing means at a first one of said crushing zones; E. means for conducting material from the discharge portion of the other of said elevator devices to the crushing means at a second one of said crushing zones; F. and a receiving unit on the frame located at an input station adjacent to the third crushing zone and adapted to separate the largest pieces from the input material and to feed said pieces to the crushing means at said third crushing zone.
Claim 7
Dependent Claim
119 words
and the third screen being adapted to discharge its carryover material into the receiving portion of the other elevator device; D. means for conducting material from the discharge portion of one of said elevator devices to the crushing means at a first one of said crushing zones; E. means for conducting material from the discharge portion of the other of said elevator devices to the crushing means at a second one of said crushing zones; F. and a receiving unit on the frame located at an input station adjacent to the third crushing zone and adapted to separate the largest pieces from the input material and to feed said pieces to the crushing means at said third crushing zone.
Claim 8
Dependent Claim
38 words
The crushing plant of claim 2, wherein said last named conducting means separately conducts material from said first and second high level discharge zones to said first and second stage crushing devices, respectively, of the secondary crusher means.
Claim 9
Dependent Claim
37 words
The crushing plant of claim 1, wherein said primary crusher means comprises first and second stage crushing devices which respectively discharge crushed material onto said first screen and onto the rearwardly extending portion of the third screen.
Claim 10
Dependent Claim
47 words
The crushing plant of claim 1, wherein said elevator means comprises a twin chambered rotary lift having a rear compartment into which carryover materials are discharged by said third screen, and having a forward compartment into which carryover materials are discharged by said first and second screens.
Claim 11
Dependent Claim
47 words
The crushing plant of claim 1, further characterized by: A. said primary crusher means comprising a twin chambered jaw crusher providing first and second stage primary crushing devices; B. and said secondary crusher means comprising a roll crushing unit having first and second stage secondary crushing devices.
Claim 12
Dependent Claim
125 words
In a crushing plant having an elongated frame and delivery conveyor means supported thereby for conducting materials of finish size forwardly toward a discharge zone, the combination of: A. means on the frame for crushing materials at three crushing zones spaced from one another lengthwise of the frame; B. elevating means comprising a pair of elevator devices mounted on the frame intermediate one of said zones and the other two, each such elevator device having a low level receiving portion and a higher level discharge portion; C. vibratory screen members under the crushing means at said crushing zones to receive materials crushed thereat, said screen members being adapted to vibrationally advance carryover material thereon toward said elevating means and being located over the conveyor means,
Claim 13
Dependent Claim
125 words
In a crushing plant having an elongated frame and delivery conveyor means supported thereby for conducting materials of finish size forwardly toward a discharge zone, the combination of: A. means on the frame for crushing materials at three crushing zones spaced from one another lengthwise of the frame; B. elevating means comprising a pair of elevator devices mounted on the frame intermediate one of said zones and the other two, each such elevator device having a low level receiving portion and a higher level discharge portion; C. vibratory screen members under the crushing means at said crushing zones to receive materials crushed thereat, said screen members being adapted to vibrationally advance carryover material thereon toward said elevating means and being located over the conveyor means,
Claim 14
Dependent Claim
24 words
The crushing plant of claim 7, wherein a separate vibratory screen member is mounted under the crushing means at each of said crushing zones.
Claim 15
Dependent Claim
49 words
The crushing plant of claim 7, wherein one of said crushing zones is located forwardly of the elevator means and the other two of said crushing zones are located rearwardly of the elevating means, and said third crushing zone is the rearward one of said other two crushing zones.
Claim 16
Dependent Claim
81 words
The crushing plant of claim 9, further characterized by: A. said first mentioned material conducting means providing for the delivery of material from the discharge portion of one of said elevator devices rearwardly to the crushing means at the forward one of said two crushing zones; B. and said second designated material conducting means providing for the delivery of material from the discharge portion of the other of said elevator devices forwardly to the crushing means at said one crushing zone.
Claim 17
Dependent Claim
24 words
The crushing plant of claim 7, wherein said third crushing zone is located between the elevator means and one of the remaining crushing zones.
Claim 18
Dependent Claim
221 words
In a crushing plant having elongated forwardly extending delivery conveyor means for finished material, the combination of: A. a receiving unit for input material having means thereon for sorting the largest pieces of input material into two different sizes; B. three crushing devices at zones spaced successively farther forwardly from the receiving unit along the length of the conveyor means; C. means for effecting feeding of the pieces of material of one of said sizes into a crushing device at a first one of said zones; D. means extending over the crushing device at said first zone for effecting transfer of the pieces of material of the other of said sizes to a crushing device at a second one of said zones forwardly of the first designated zone; E. an elevator device ahead of said second zone and having low level receiving means and higher level discharge means; F. a vibratory screen under each crushing device but above the conveyor means, and through which material of finish size can pass, each of said screens being adapted to vibrationally advance carryover material thereon toward and into the receiving means of the elevator device; G. and means for delivering materials from said discharge means of the elevator device to the crushing devices at two of said zones forwardly of the first designated zone.
Claim 19
Dependent Claim
221 words
In a crushing plant having elongated forwardly extending delivery conveyor means for finished material, the combination of: A. a receiving unit for input material having means thereon for sorting the largest pieces of input material into two different sizes; B. three crushing devices at zones spaced successively farther forwardly from the receiving unit along the length of the conveyor means; C. means for effecting feeding of the pieces of material of one of said sizes into a crushing device at a first one of said zones; D. means extending over the crushing device at said first zone for effecting transfer of the pieces of material of the other of said sizes to a crushing device at a second one of said zones forwardly of the first designated zone; E. an elevator device ahead of said second zone and having low level receiving means and higher level discharge means; F. a vibratory screen under each crushing device but above the conveyor means, and through which material of finish size can pass, each of said screens being adapted to vibrationally advance carryover material thereon toward and into the receiving means of the elevator device; G. and means for delivering materials from said discharge means of the elevator device to the crushing devices at two of said zones forwardly of the first designated zone.
Claim 20
Dependent Claim
31 words
The crushing plant of claim 12, wherein said last named means effects delivery of material from said discharge means of the elevator device to the crushing device at said second zone.
Claim 21
Dependent Claim
64 words
The crushing plant of claim 12, further characterized by: A. said first and second crushing zones being located between the receiving unit and the elevator device; B. there being a third crushing device at a zone at the side of the elevator device remote from the receiving unit, to which said last named means delivers materials from the discharge means of the elevator device.
Claim 22
Dependent Claim
80 words
The crushing plant of claim 14, further characterized by: A. a pair of elevator devices; B. a double staged primary crusher rearwardly of said elevator devices; C. a double staged secondary crusher forwardly of said elevator devices; D. a common vibratory screen beneath the two crushing zones provided by said double staged secondary crusher; E. and means for separately delivering material from the discharge means of each of said elevator devices respectively to the two stages of the secondary crusher.
Claim 23
Dependent Claim
256 words
A crushing plant having an elongated frame and delivery conveyor means extending lengthwise thereof, characterized by: A. primary crushing means having first and second stage crushers; B. secondary crushing means having first and second stage crushers; C. a receiving unit located at an input station adjacent to the primary crushing means, said receiving unit having means for separating the largest pieces of the input material into two different sizes and for separately feeding the same into the first and second stages, respectively, of The primary crushing means; D. a separate screen under each stage of the primary crushing means to receive material crushed thereby, and through which finish material can pass to reach said delivery conveyor means; E. a single screen under the secondary crusher to serve both stages thereof, and through which material of finished size can pass to reach said delivery conveyor means; F. a pair of rotary elevator devices on the frame between the primary and secondary crushing means, each adapted to receive material at a low level and to discharge said material at a higher level; G. means for effecting discharge of carryover material from the screen associated with the first stage of the primary crushing means into the receiving means of one of said elevator devices; H. means for effecting discharge of carryover materials from said other screens into the receiving means of the other elevator device; I. and separate means for conducting materials respectively discharged from said elevator devices into the first and second stages of the secondary crushing means.
Claim 24
Dependent Claim
256 words
A crushing plant having an elongated frame and delivery conveyor means extending lengthwise thereof, characterized by: A. primary crushing means having first and second stage crushers; B. secondary crushing means having first and second stage crushers; C. a receiving unit located at an input station adjacent to the primary crushing means, said receiving unit having means for separating the largest pieces of the input material into two different sizes and for separately feeding the same into the first and second stages, respectively, of The primary crushing means; D. a separate screen under each stage of the primary crushing means to receive material crushed thereby, and through which finish material can pass to reach said delivery conveyor means; E. a single screen under the secondary crusher to serve both stages thereof, and through which material of finished size can pass to reach said delivery conveyor means; F. a pair of rotary elevator devices on the frame between the primary and secondary crushing means, each adapted to receive material at a low level and to discharge said material at a higher level; G. means for effecting discharge of carryover material from the screen associated with the first stage of the primary crushing means into the receiving means of one of said elevator devices; H. means for effecting discharge of carryover materials from said other screens into the receiving means of the other elevator device; I. and separate means for conducting materials respectively discharged from said elevator devices into the first and second stages of the secondary crushing means.
Claim 25
Dependent Claim
255 words
In a crushing plant having an elongated frame, and mounted thereon, the following components: A. delivery conveyor means for finish material; B. a receiving unit at the rear of the frame, having means thereon for sorting input material into large and larger size pieces; C. first, second and third crushing devices at zones spaced successively farther forwardly from the receiving unit; D. means to effect feeding of said larger and large size pieces into said first and second crushing devices, respectively; E. elevator means located between the second and third crushing devices and comprising a pair of lifting devices each having a low level receiving zone and a higher level discharge zone; F. a vibratory screen under each of said second and third crushing devices but above the conveyor means, through which material of finish size can pass, each of said screens being adapted to vibrationally conduct carryover material thereon to the low level receiving means of the same one of said lifting devices; G. a third vibratory screen under the first crushing device but above the conveyor means and through which material of finish size can pass, said third screen being adapted to vibrationally conduct carryover material thereon to the low level receiving means of the other of said lifting devices; H. means for conducting materials to the third crushing device from the higher level discharge zone of said one lifting device; I. and means for conducting materials to said second crushing device from the higher level discharge zone of said other lifting device.
Claim 26
Dependent Claim
255 words
In a crushing plant having an elongated frame, and mounted thereon, the following components: A. delivery conveyor means for finish material; B. a receiving unit at the rear of the frame, having means thereon for sorting input material into large and larger size pieces; C. first, second and third crushing devices at zones spaced successively farther forwardly from the receiving unit; D. means to effect feeding of said larger and large size pieces into said first and second crushing devices, respectively; E. elevator means located between the second and third crushing devices and comprising a pair of lifting devices each having a low level receiving zone and a higher level discharge zone; F. a vibratory screen under each of said second and third crushing devices but above the conveyor means, through which material of finish size can pass, each of said screens being adapted to vibrationally conduct carryover material thereon to the low level receiving means of the same one of said lifting devices; G. a third vibratory screen under the first crushing device but above the conveyor means and through which material of finish size can pass, said third screen being adapted to vibrationally conduct carryover material thereon to the low level receiving means of the other of said lifting devices; H. means for conducting materials to the third crushing device from the higher level discharge zone of said one lifting device; I. and means for conducting materials to said second crushing device from the higher level discharge zone of said other lifting device.
Claim 27
Dependent Claim
74 words
The crushing plant of claim 17, further characterized by: A. said receiving unit having upper and lower vibratory screens on which said large and larger size pieces, respectively, are sorted out of the input material; B. and chute means for conducting said large pieces from the upper of said screens and from the other of said lifting devices into the second crushing device, one of said chute means extending over the first crushing device.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |