US3669193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gang bolt locking arrangement
Assignee: Kewanee Machinery and Conveyor Co
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Filing: 1970-12-09
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Granted: 1972-06-13
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Expires: 1990-12-09
Abstract
Abstract Clamping means for a piece of farm machinery, more specifically a disc harrow. The clamping means assures the proper tightening and positioning of one or more discs which are concavo-convex in shape upon a shaft. The clamping means includes a reaction member such as an anchor nut for the threaded end of the gang bolt or tie-rod which reaction member or anchor nut has a series of threaded holes through it and carries tightening screws or bolts and a clamping plate which has a central opening embracing the shaft but not connected to the shaft said plate being spring-like in character and engageable by the tightening screws whereby the plate is adapted to be forced by its outer surface, or at least the margin thereof against the surface of the disc which is adjacent to it whereby the gang bolt is placed under proper tension and the disc, or discs, and spacers between discs are adequately pressed together under spring tension.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066; Y10T403/7067; Y10T403/7069
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
194 words
Clamping means for holding a disc upon a supporting shaft which shaft provides an abutment on one side of the disc, a disc on said shaft with said one side toward said abutment whereby said disc is held against movement axially of said shaft in the direction of said abutment, a clamping plate having a central opening embracing said shaft and having its periphery symmetrical about said opening for engaging the opposite surface of said disc about said shaft, a reaction member secured on the end of said shaft, said reaction member having a series of threaded holes disposed substantiaLly symmetrically about its center with the axes of said holes being substantially parallel with the axis of the shaft and being disposed radially between the shaft and the outer periphery of said reaction member and being substantially equidistant, tightening screws threaded in said holes said screws having their inner ends disposed to exert pressure upon said clamping plate at points disposed symmetrically about the opening in said plate and being adapted to be tightened progressively to force the outer margin of the clamping plate against said opposite surface of the disc under spring tension.
Claim 2
Dependent Claim
194 words
Clamping means for holding a disc upon a supporting shaft which shaft provides an abutment on one side of the disc, a disc on said shaft with said one side toward said abutment whereby said disc is held against movement axially of said shaft in the direction of said abutment, a clamping plate having a central opening embracing said shaft and having its periphery symmetrical about said opening for engaging the opposite surface of said disc about said shaft, a reaction member secured on the end of said shaft, said reaction member having a series of threaded holes disposed substantiaLly symmetrically about its center with the axes of said holes being substantially parallel with the axis of the shaft and being disposed radially between the shaft and the outer periphery of said reaction member and being substantially equidistant, tightening screws threaded in said holes said screws having their inner ends disposed to exert pressure upon said clamping plate at points disposed symmetrically about the opening in said plate and being adapted to be tightened progressively to force the outer margin of the clamping plate against said opposite surface of the disc under spring tension.
Claim 3
Dependent Claim
34 words
The clamping means of claim 1 wherein the disc is concavo-convex and said one side of the disc is a convex side and wherein the opposite surface of the disc is the concave surface.
Claim 4
Dependent Claim
36 words
The clamping means of claim 1 wherein the clamping plate has a plurality of indentations each alignable with the threaded holes in said anchor nut and adapted to receive the free end of a tightening screw.
Claim 5
Dependent Claim
22 words
The clamping means of claim 1 wherein the clamping plate has a shield adjacent its outer margin which surrounds the reaction member.
Claim 6
Dependent Claim
27 words
The clamping means of claim 1 wherein the reaction member is an anchor nut and the free end of the shaft is threaded to receive the nut.
Claim 7
Dependent Claim
41 words
The clamping means of claim 5 wherein the anchor nut has a threaded bore leading to the free end of the shaft and is adapted to carry a setscrew and a soft metal plug, the plug being movable by the setscrew.
Claim 8
Dependent Claim
197 words
In combination a supporting shaft (14), a concavo-convex disc (12a) having a central opening through which the shaft extends, means (12d) connected to the shaft and providing an annular shoulder for exerting pressure against the convex side of the disc (12a), anchor means (24) releasably mounted upon the shaft on the concave side of the disc, an annular spring pressure plate (22) having a central opening (23) receiving the shaft (14) said pressure plate (22) being disposed between the anchor means (24) and the concave side of the disc (12a) and having its outer rim (31) engaging said concave side of the disc (12a) and a series of tightening screws (28) with their axes in parallel and being symmetrically disposed about the axes of said shaft (14) and lying at a radius from the axis of the shaft (14) substantially less than the radius of the outer peripheral edge (31) of the pressure plate (22) said tightening screws (28) being threaded through the anchor means (24) and being adapted to spring the central part of the pressure plate (22) towards the disc (12a) and press the outer circular margins of the pressure plate against the disc (12a).
Claim 9
Dependent Claim
197 words
In combination a supporting shaft (14), a concavo-convex disc (12a) having a central opening through which the shaft extends, means (12d) connected to the shaft and providing an annular shoulder for exerting pressure against the convex side of the disc (12a), anchor means (24) releasably mounted upon the shaft on the concave side of the disc, an annular spring pressure plate (22) having a central opening (23) receiving the shaft (14) said pressure plate (22) being disposed between the anchor means (24) and the concave side of the disc (12a) and having its outer rim (31) engaging said concave side of the disc (12a) and a series of tightening screws (28) with their axes in parallel and being symmetrically disposed about the axes of said shaft (14) and lying at a radius from the axis of the shaft (14) substantially less than the radius of the outer peripheral edge (31) of the pressure plate (22) said tightening screws (28) being threaded through the anchor means (24) and being adapted to spring the central part of the pressure plate (22) towards the disc (12a) and press the outer circular margins of the pressure plate against the disc (12a).
Claim 10
Dependent Claim
31 words
The combination of claim 7 with means (35) interacting between the anchor means (24) and the shaft (14) to prevent displacement of the anchor means (24) relative to the shaft (14).
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |