US3603351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dobby for looms
Assignee: Individual
•
Filing: 1969-03-05
•
Granted: 1971-09-07
•
Expires: 1989-03-05
Abstract
Abstract A high-speed dobby with heddles which are moved in one direction by means of a springs and in the opposite direction by means of a cam and lever assembly.
Inventors
- 👤 Giovanni Piazzolla
- 👤 Carlo Villa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:51
CPC Classifications
D; D03; D03C; D03C5/00; D03C5/02; D03C13/00; D03C2700/00; D03C2700/01; D03C2700/0194
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
128 words
In a loom, particularly a dobby loom, in combination, a plurality of movable elongated heddles; guide means for guiding said heddles for reciprocating movement in longitudinal direction and comprising a housing and a plurality of motion-transmitting rods respectively axially aligned with and connected to said heddles and being reciprocally guided in said housing; and drive means cooperating with said motion-transmitting rods for reciprocating the latter and the heddles connected thereto, said drive means comprising biassing means for yieldably urging said rods in one direction and positive displacement means comprising follower means mounted on said rods, rotary cam means and means for transmitting motion from said cam means to said follower means for intermittently moving said follower means in the opposite direction against the resistance of said biassing means.
Claim 2
Dependent Claim
128 words
In a loom, particularly a dobby loom, in combination, a plurality of movable elongated heddles; guide means for guiding said heddles for reciprocating movement in longitudinal direction and comprising a housing and a plurality of motion-transmitting rods respectively axially aligned with and connected to said heddles and being reciprocally guided in said housing; and drive means cooperating with said motion-transmitting rods for reciprocating the latter and the heddles connected thereto, said drive means comprising biassing means for yieldably urging said rods in one direction and positive displacement means comprising follower means mounted on said rods, rotary cam means and means for transmitting motion from said cam means to said follower means for intermittently moving said follower means in the opposite direction against the resistance of said biassing means.
Claim 3
Dependent Claim
18 words
A structure as defined in claim 1, wherein said cam means comprises a plurality of relatively discrete cams.
Claim 4
Dependent Claim
32 words
A structure as defined in claim 1, wherein said positive displacement means further comprises a rotary support for said cam means and means for separably connecting said cam means to said support.
Claim 5
Dependent Claim
54 words
A structure as defined in claim 1, wherein said means for transmitting motion from said cam means to said follower means comprises lever means pivotable about a single predetermined axis, said lever means having first arm means engaging said follower means, and second arm means provided with second follower means tracking said cam means.
Claim 6
Dependent Claim
17 words
A structure as defined in claim 1, wherein said biasing means comprises a plurality of spring means.
Claim 7
Dependent Claim
15 words
A structure as defined in claim 5, wherein said spring means are helical expansion springs.
Claim 8
Dependent Claim
28 words
A structure as defined in claim 1, wherein said housing at least partially encloses said positive displacement means and further comprising a supply of lubricant in said housing.
Claim 9
Dependent Claim
18 words
A structure as defined in claim 1, wherein said cam means comprises a plurality of relatively discrete cams.
Claim 10
Dependent Claim
32 words
A structure as defined in claim 1, wherein said positive displacement means further comprises a rotary support for said cam means and means for separably connecting said cam means to said support.
Claim 11
Dependent Claim
54 words
A structure as defined in claim 1, wherein said means for transmitting motion from said cam means to said follower means comprises lever means pivotable about a single predetermined axis, said lever means having first arm means engaging said follower means, and second arm means provided with second follower means tracking said cam means.
Claim 12
Dependent Claim
17 words
A structure as defined in claim 1, wherein said biasing means comprises a plurality of spring means.
Claim 13
Dependent Claim
15 words
A structure as defined in claim 5, wherein said spring means are helical expansion springs.
Claim 14
Dependent Claim
28 words
A structure as defined in claim 1, wherein said housing at least partially encloses said positive displacement means and further comprising a supply of lubricant in said housing.
References Cited (Backward Citations)
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Cited
US734834A
Cited
US2263678A
Cited
GB639771A
Cited
US2552418A
Cited
US2980145A
Cited
US3173452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |