US3874514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane arrangement and ladle structure
Assignee: Individual
•
Filing: 1973-01-15
•
Granted: 1975-04-01
•
Expires: 1993-01-15
Abstract
Abstract A crane structure having a rotatable load support and also having a rotatable cab support with a control system including electrical, pneumatic and hydraulic systems. There is also disclosed a multiple outlet ladle and a tilting arrangement for the ladle.
Inventors
- 👤 Ray Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
B; B66; B66C; B66C17/00; B66C17/06; B66C17/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
332 words
In a crane structure a main crane frame comprising parallel rails, a set of support rollers on said main frame for the support thereof on stationary mounted main track members which are parallel to each other and perpendicular to said frame rails, a Load trolley having a set of support rollers thereon engaging said frame rails, a first circular track on said load trolley, a load carriage having a set of support rollers thereon engaging said first circular track, drum means rotatable on horizontal axes in said load carriage, load cable means connected to said drum means and leading downwardly therefrom for supporting a load, a cab trolley having a set of support rollers thereon engaging said frame rails a second circular track on said cab trolley, a cab carriage having a set of support rollers thereon engaging said second circular track, a cab beneath said cab carriage, cable means supportingly connecting said cab to said cab carriage, and winch means engaging said cable means and operable for changing the length of said cable means to raise and lower said cab relative to said cab carriage, individual electric motors connected to at least one roller of each set of supporting rollers and means for selectively engaging said motors, a control element in said cab for controlling the energization of each of said motors, a first electric cable leading from said control elements, a rotatably first drum in said cab carriage about which said electric cable is entrained, a second electric cable leading from said first drum to said motors, first slip ring means carried by said first drum and electrically connecting said first cable to said second cable, a third electric cable connected to said control elements, a rotatable second drum about which said third cable is entrained, a fourth electric cable leading from a stationary power supply to said second drum, and second slip ring means carried by said second drum and electrically connecting said third cable to said fourth cable.
Claim 2
Dependent Claim
332 words
In a crane structure a main crane frame comprising parallel rails, a set of support rollers on said main frame for the support thereof on stationary mounted main track members which are parallel to each other and perpendicular to said frame rails, a Load trolley having a set of support rollers thereon engaging said frame rails, a first circular track on said load trolley, a load carriage having a set of support rollers thereon engaging said first circular track, drum means rotatable on horizontal axes in said load carriage, load cable means connected to said drum means and leading downwardly therefrom for supporting a load, a cab trolley having a set of support rollers thereon engaging said frame rails a second circular track on said cab trolley, a cab carriage having a set of support rollers thereon engaging said second circular track, a cab beneath said cab carriage, cable means supportingly connecting said cab to said cab carriage, and winch means engaging said cable means and operable for changing the length of said cable means to raise and lower said cab relative to said cab carriage, individual electric motors connected to at least one roller of each set of supporting rollers and means for selectively engaging said motors, a control element in said cab for controlling the energization of each of said motors, a first electric cable leading from said control elements, a rotatably first drum in said cab carriage about which said electric cable is entrained, a second electric cable leading from said first drum to said motors, first slip ring means carried by said first drum and electrically connecting said first cable to said second cable, a third electric cable connected to said control elements, a rotatable second drum about which said third cable is entrained, a fourth electric cable leading from a stationary power supply to said second drum, and second slip ring means carried by said second drum and electrically connecting said third cable to said fourth cable.
Claim 3
Dependent Claim
24 words
A crane structure according to claim 1 in which said winch means includes drum means mounted on horizontal axis means in said cab carriage.
Claim 4
Dependent Claim
21 words
A crane structure according to claim 1 in which said second drum is rotatable on a horizontal axis on said cab.
Claim 5
Dependent Claim
78 words
A crane structure according to claim 1 which includes a fluid operated brake between said load trolley and said main frame, a hose drum rotatable on a horizontal axis in said cab carriage and a hose entrained thereabout and leading into said cab, a control member in the cab connected to said hose, a conduit leading from said hose drum to said brake, and a source of pressure for said brake under the control of said control member.
Claim 6
Dependent Claim
37 words
A crane structure according to claim 1 which includes load engaging means supported by said load cable means and having a hook, and means selectively adjustable for closing said hook to prevent disengagement thereof from a load.
Claim 7
Dependent Claim
44 words
A crane structure according to claim 1 which includes load engaging means supported by said load cable means and having a hook, a ladle for molten metal and having a bail engaged by said hook, and discharge means in the bottom of said ladle.
Claim 8
Dependent Claim
74 words
A crane structure according to claim 6 which includes a rotatable hollow drum on said load carriage, compressor means on said load carriage connected with the inside of said hollow drum, a flexible conduit having one end connected to the inside of said hollow drum and entrained about the hollow drum and leading downwardly therefrom, a valve at the lower end of said conduit, and means operable in said cab for controlling said valve.
Claim 9
Dependent Claim
44 words
A crane structure according to claim 7 in which said ladle has a plurality of discharge openings in the bottom, a stopper for each opening, a fluid cylinder on the ladle for each stopper, and means in said cab for selectively controlling said cylinders.
Claim 10
Dependent Claim
31 words
A crane structure according to claim 8 in which said ladle includes means tiltably connecting the ladle to the supporting bail thereof, and means for tilting said ladle on said bail.
Claim 11
Dependent Claim
18 words
A crane structure according to claim 9 in which said ladle includes pouring spout means at the top.
Claim 12
Dependent Claim
132 words
A crane structure according to claim 1 which includes a control element in said cab for controllinG the energization of each of said motors, a first electric cable leading from said control elements, a rotatable first drum in said cab carriage about which said first cable is entrained, buss means on said main frame parallel to the rails thereof, a second electric cable having first slipper means engaging said buss means and leading to said first drum, first slip ring means carried by said first drum and electrically interconnecting said first and second cables, second slipper means connected to said load trolley and engaging said buss means, and a third electric cable connected to said second slipper means and leading to the said motors pertaining to said load trolley and load carriage.
Claim 13
Dependent Claim
97 words
A cable structure according to claim 11 which includes supply busses parallel to said tracks, third slippers engaging said supply busses, further busses on said crane frame and connected to said third slippers, fourth slippers carried by the cab trolley and engaging said further busses, a fourth electric cable connected to said fourth slippers and leading to said cab, a further cable drum rotatable on said cab and about which said fourth cable is entrained, a fifth cable leading to said control elements, and slip ring means in said further drum interconnecting said fourth and fifth cables.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |