Patent US3889326A successfully refreshed from Google Patents.
US3889326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle looms
Assignee: WELDSTOW Ltd
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Filing: 1973-08-03
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Granted: 1975-06-17
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Expires: 1993-08-03
Abstract
Abstract The invention is concerned with needle board assemblies and driving units for use in needle looms. The needle loom is driven by an eccentric, cam or crank mechanism from a driving shaft, and the connecting rod from this mechanism, is coupled to a drive rod which works like a piston in a pair of spaced apart slide bearings. The coupling is between the two slide bearings, so that there are reduced stresses in the rapidly moving parts. The invention also includes a drive unit in which a single connecting rod mounted between a pair of main journal bearings has a gudgeon pin porjecting on opposite sides, and engaging in bosses on two drive rods connected to a single needle arm.
Inventors
- 👤 Trevor Tyas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
D; D04; D04H; D04H18/00; D04H18/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
For use in a needle loom, a needle board assembly comprising a needle board; a pair of drive rods spaced apart longitudinally of said needle board and attached to said needle board for movement therewith; first and second bearings for each of said drive rods, said first and second bearings of each said drive rod being spaced apart axially with respect to their associated drive rods, said first and second bearings constraining their respective drive rod to follow a rectilinear axial path; a rotary driving shaft; a connecting rod; a mechanism for producing reciprocation of said connecting rod from rotation of said driving shaft, and coupling means coupling said connecting rod to parts of said drive rods located between said first and second bearings.
Claim 2
Dependent Claim
124 words
For use in a needle loom, a needle board assembly comprising a needle board; a pair of drive rods spaced apart longitudinally of said needle board and attached to said needle board for movement therewith; first and second bearings for each of said drive rods, said first and second bearings of each said drive rod being spaced apart axially with respect to their associated drive rods, said first and second bearings constraining their respective drive rod to follow a rectilinear axial path; a rotary driving shaft; a connecting rod; a mechanism for producing reciprocation of said connecting rod from rotation of said driving shaft, and coupling means coupling said connecting rod to parts of said drive rods located between said first and second bearings.
Claim 3
Dependent Claim
50 words
For use in a needle loom, a needle board assembly according to claim 1, wherein said connecting rod is positioned between said pair of drive rods and said coupling means comprises a gudgeon pin extending on opposite sides of said connecting rod and engaging in parts of said drive rods.
Claim 4
Dependent Claim
76 words
For use in a needle loom, a needle board assembly according to claim 2, which includes a pair of main journal bearings mounting said driving rod for rotation about its longitudinal axis, said mechanism for producing reciprocation of said connecting rod being located between said pair of main journal bearings, and said driving shaft extending outside each of said main journal bearings, there being a flywheel on each of said outward extensions of said driving shaft.
Claim 5
Dependent Claim
52 words
A needle board unit for use in a needle loom comprising first and second needle board assemblies each in accordance with claim 3, said first and second assemblies being arranged with their respective needle boards and drivinG shafts parallel with each other, there being gearing coupling said driving shafts together for contra-rotation.
Claim 6
Dependent Claim
50 words
A needle board unit according to claim 4, wherein said flywheels of said two assemblies are offset relatively to each other in the direction of the axes of the driving shafts and said flywheels on one of said driving shafts overlap said flywheels on the other of said driving shafts.
Claim 7
Dependent Claim
123 words
For use in a needle loom, a needle board assembly comprising a needle board; a pair of drive rods spaced apart longitudinally of said needle board and fixed to said needle board for movement therewith; bearings for each of said drive rods, said bearings constraining said guide rods to a rectilinear axial path of movement; a rotary driving shaft extending perpendicularly to said drive rods; a connecting rod positioned between said pair of drive rods; means connecting said connecting rod with said driving shaft comprising means for producing reciprocation of said connecting rod by rotation of said driving shaft, and coupling means coupling said connecting rod to both of said drive rods to reciprocate said drive rods and thereby reciprocate said needle board.
Claim 8
Dependent Claim
123 words
For use in a needle loom, a needle board assembly comprising a needle board; a pair of drive rods spaced apart longitudinally of said needle board and fixed to said needle board for movement therewith; bearings for each of said drive rods, said bearings constraining said guide rods to a rectilinear axial path of movement; a rotary driving shaft extending perpendicularly to said drive rods; a connecting rod positioned between said pair of drive rods; means connecting said connecting rod with said driving shaft comprising means for producing reciprocation of said connecting rod by rotation of said driving shaft, and coupling means coupling said connecting rod to both of said drive rods to reciprocate said drive rods and thereby reciprocate said needle board.
Claim 9
Dependent Claim
38 words
For use in a needle loom, a needle board assembly according to claim 6, wherein said coupling means comprises a gudgeon pin extending on opposite sides of said connecting rod and engaging in parts of said drive rods.
Claim 10
Dependent Claim
74 words
For use in a needle loom, a needle board assembly according to claim 7, which includes a pair of main journal bearings mounting said driving shaft for rotation about its longitudinal axis, said mechanism for producing reciprocation of said connecting rod being located between said pair of main journal bearings, said driving shaft extending outside each of said main journal bearings, and a flywheel on each of said outward extensions of said driving shaft.
Claim 11
Dependent Claim
48 words
In a needle loom, first and second needle board assemblies each in accordance with claim 8, said first and second assemblies being arranged with their respective needle boards and driving shafts parallel with each other, and gearing coupling said driving shafts together for contra-rotation relative to one another.
Claim 12
Dependent Claim
48 words
A needle loom according to claim 9, wherein said flywheels of said two assemblies are offset relatively to each other in the direction of the axes of the driving shafts and said flywheels on one of said shafts overlap said flywheels on the other of said driving shafts.
Claim 13
Dependent Claim
119 words
In a needle loom comprising a needle board, means for guiding and reciprocating said needle board including two drive rods fixed to said needle board for movement therewith, first and second bearings spaced apart axially with respect to each of said drive rods and constraining said drive rods to follow a rectilinear axial path, a gudgeon pin extending laterally from each of said drive rods between said bearings, a crank shaft rotatably supported with its axis perpendicular to said drive rods and connecting rod means connecting said crank shaft with said gudgeon pin on one side only of each of said drive rods to produce reciprocation of said drive rods and needle board upon rotation of said crank shaft.
Claim 14
Dependent Claim
119 words
In a needle loom comprising a needle board, means for guiding and reciprocating said needle board including two drive rods fixed to said needle board for movement therewith, first and second bearings spaced apart axially with respect to each of said drive rods and constraining said drive rods to follow a rectilinear axial path, a gudgeon pin extending laterally from each of said drive rods between said bearings, a crank shaft rotatably supported with its axis perpendicular to said drive rods and connecting rod means connecting said crank shaft with said gudgeon pin on one side only of each of said drive rods to produce reciprocation of said drive rods and needle board upon rotation of said crank shaft.
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) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |