US3612490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination weighing and mixing apparatus for fertilizer or the like
Assignee: CONSTRUCTION MACHINERY CO
•
Filing: 1969-06-13
•
Granted: 1971-10-12
•
Expires: 1989-06-13
Abstract
Abstract A combination weighing and mixing apparatus for fertilizer or the like comprising a skip loader normally freely supported on a weigh scale and which is pivotal about one of its upper ends by a hydraulic cylinder means to facilitate the dumping of the material therefrom into a mixing drum after the material has been weighed. The mixing drum is of the type used in the cement-mixing industry and is designed to mix the material deposited therein while revolving in one direction and to discharge the material therefrom while revolving in the opposite direction. The apparatus also includes means for automatically freeing the skip loader from the cylinder means and the skip loader support means while the skip loader is supported on the weigh scale. The cylinder means includes means thereon to insure that the skip loader will be gently placed on the weigh scale after the material has been dumped therefrom.
Inventors
- 👤 Cecil W Bopp
- 👤 James B Porter Jr
- 👤 William H Cone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
B; B28; B28C; B28C7/00; B28C7/04; B28C7/0422; B28C7/044; B28C7/06; B28C7/08; B28C7/0835; G; G01; G01G; G01G1/00; G01G1/18; G01G1/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
232 words
In combination, a weigh scale means adapted to indicate the weight placed thereon, a pivotal support means spaced from said scale means, a normally horizontal hopper means supported on said scale means, support means on said hopper in spaced relation to said pivotal support means, a hydraulic cylinder means adapted to engage said hopper and said support means into pivotal engagement with said pivotal support means whereby said hopper can be pivotally moved from a position on said scale to a dumping position on said pivotal support means, a mixing drum spaced from said weigh scale means having an upper end adapted to receive the material being dumped from said hopper means, a reversible electric motor operatively connected to said drum whereby rotation of said motor in one direction will cause said drum to rotate in one direction to discharge the material therefrom and whereby rotation of said motor in an opposite direction will cause said drum to rotate in an opposite direction to mix the material therein, a reversible hydraulic gear pump connected to said motor and being rotatable in opposite directions, said gear pump being operatively fluidly connected to a hydraulic rectifier means which is operatively fluidly connected to said hydraulic cylinder means, said hydraulic rectifier means adapted to permit the selective actuation of said hydraulic cylinder means regardless of the direction of rotation of said motor and gear pump.
Claim 2
Dependent Claim
232 words
In combination, a weigh scale means adapted to indicate the weight placed thereon, a pivotal support means spaced from said scale means, a normally horizontal hopper means supported on said scale means, support means on said hopper in spaced relation to said pivotal support means, a hydraulic cylinder means adapted to engage said hopper and said support means into pivotal engagement with said pivotal support means whereby said hopper can be pivotally moved from a position on said scale to a dumping position on said pivotal support means, a mixing drum spaced from said weigh scale means having an upper end adapted to receive the material being dumped from said hopper means, a reversible electric motor operatively connected to said drum whereby rotation of said motor in one direction will cause said drum to rotate in one direction to discharge the material therefrom and whereby rotation of said motor in an opposite direction will cause said drum to rotate in an opposite direction to mix the material therein, a reversible hydraulic gear pump connected to said motor and being rotatable in opposite directions, said gear pump being operatively fluidly connected to a hydraulic rectifier means which is operatively fluidly connected to said hydraulic cylinder means, said hydraulic rectifier means adapted to permit the selective actuation of said hydraulic cylinder means regardless of the direction of rotation of said motor and gear pump.
Claim 3
Dependent Claim
177 words
In an apparatus of the class described: weigh scale means adapted to indicate the weight placed thereon; support means having first bearing means thereon; hopper means having second bearing means thereon adapted to cooperate with and bear against said first bearing means so as to permit swinging movement of said hopper means about a horizontal axis from a first position wherein said hopper means is on said weigh scale means to a dumping position; one of said first and second bearing means being journaled loosely within the other of said first and second bearing means so as to cause said first and second bearing means to be substantially free from weight supporting connection with one another when said hopper means is in its first position on said weigh scale means; power means connected to said hopper means adapted to swing said hopper means about said horizontal axis; and a mixing drum is spaced relation to said weigh scale means, said mixing drum having an open upper end adapted to receive material being dumped from said hopper means.
Claim 4
Dependent Claim
177 words
In an apparatus of the class described: weigh scale means adapted to indicate the weight placed thereon; support means having first bearing means thereon; hopper means having second bearing means thereon adapted to cooperate with and bear against said first bearing means so as to permit swinging movement of said hopper means about a horizontal axis from a first position wherein said hopper means is on said weigh scale means to a dumping position; one of said first and second bearing means being journaled loosely within the other of said first and second bearing means so as to cause said first and second bearing means to be substantially free from weight supporting connection with one another when said hopper means is in its first position on said weigh scale means; power means connected to said hopper means adapted to swing said hopper means about said horizontal axis; and a mixing drum is spaced relation to said weigh scale means, said mixing drum having an open upper end adapted to receive material being dumped from said hopper means.
Claim 5
Dependent Claim
42 words
Apparatus according to claim 2 wherein said one of said first and second bearing means has an outer diameter; said other bearing means being a ring bearing having an inside diameter substantially greater than said outer diameter of said one bearing means.
Claim 6
Dependent Claim
122 words
The apparatus of claim 2 wherein said support means includes upstanding spaced-apart arms having a circular opening formed therein adjacent thEir upper ends; said first bearing means being a ring bearing mounted in each of said circular openings; a horizontal rod being secured to said hopper means and having its opposite ends being received by said ring bearings; said second bearing means being rotatable bearings on opposite ends of said rod for rotatably engaging said ring bearing when said hopper is being pivoted; the inside diameter of said ring bearings being substantially greater than the outside diameters of said rotatable bearing so that said rotatable bearings will not engage said ring bearings when said hopper means is on said weigh scale means.
Claim 7
Dependent Claim
110 words
The apparatus of claim 2 wherein said power means is a hydraulic cylinder having one of it ends connected to said support means; the other end of said hydraulic cylinder having a pin thereon, said pin having opposite ends; said hopper means including vertically disposed brackets having elongated openings formed therein, said opposite ends of said pins extending within said elongated openings and being free to slide along the lengths of said elongated openings; the relative positions of said pin and said elongated openings being such that said hopper means is substantially free from supporting connection with said hydraulic cylinder when said hopper means is on said weigh scale means.
Claim 8
Dependent Claim
68 words
The apparatus of claim 5 wherein said elongated openings each include a substantially circular opening portion which freely receives said pin when said hopper means is on said weigh scale means, each of said openings also including an inclined slot opening portion extending upwardly from said circular opening portion which is adapted to pivotally receive said pin when said hopper means is being swung by said hydraulic cylinder.
Claim 9
Dependent Claim
94 words
The apparatus of claim 7 wherein said weigh scale means includes a frame adapted to support said hopper means, said hopper means having guide means thereon positioned to engage and cam against said frame as said hopper means moves to its first position from said dumping position, said guide means guiding said hopper means to a predetermined position from said dumping position, said guide means guiding said hopper means to a predetermined position on said frame wherein said hopper means will be free from supporting connection with said support means and said hydraulic cylinder.
Claim 10
Dependent Claim
72 words
The apparatus of claim 2 wherein said weigh scale means includes a frame adapted to support said hopper means, said hopper means having guide means thereon positioned to engage and cam against said frame as said hopper means moves to its first position from said dumping position, said guide means guiding said hopper means to a predetermined position wherein said hopper means will be free from supporting connection with said support means.
Claim 11
Dependent Claim
16 words
The 3 of claim 2 wherein said mixing drum is rotatably supported on said support means.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |