US3885780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripper jaw insert mistake detector
Assignee: Bell and Howell Co
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Filing: 1971-01-22
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Granted: 1975-05-27
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Expires: 1991-01-22
Abstract
Abstract A device is disclosed for detecting ''''double-or-miss'''' mistakes of an inserting machine. The device comprises the inserting machine''s gripper jaws, a leaf spring which is attached to one of the gripper jaws and an electronic detector. The leaf spring''s position is determined by the extent to which the jaws are open. The leaf spring forms a movable electrode which is positioned between first and second electrodes which form a part of the electronic detector. When there is a miss the leaf spring makes contact with either the first or the second electrode and when there is a double the leaf spring makes contact with the other electrode.
Inventors
- 👤 Wilbur J Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:30
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/30; B65H7/00; B65H7/02; B65H7/04; B65H7/06; B65H7/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
202 words
A mistake detector for inserting machines utilizing at least one gripper jaw assembly movable toward and away from an insertion station and comprising a first jaw and a second jaw rotatably attached to one another in a manner such that said jaws are rotatable toward and away from each other so as to form an insertion gripping gap therebetween, said mistake detector comprising: a leaf spring fixedly attached to one of said jaws so as to rotate with said one jaw relative to the other jaw of said gripper jaw assembly; spaced apart first and second electrodes fixedly attached to the other of said jaws a portion of said leaf spring lying between said electrodes and normally occupying an intermediate position between said electrodes whereby rotation of said one jaw causes said leaf spring to contact either said first or said second electrode depending upon the number of inserts being gripped by said gripper jaw assembly; and, an electronic detector and indicator means electrically connected to said electrodes and to said leaf spring for detecting and indicating when one of said electrodes is in contact with said leaf spring by completing an electrical circuit which includes said electrodes and said leaf spring.
Claim 2
Dependent Claim
202 words
A mistake detector for inserting machines utilizing at least one gripper jaw assembly movable toward and away from an insertion station and comprising a first jaw and a second jaw rotatably attached to one another in a manner such that said jaws are rotatable toward and away from each other so as to form an insertion gripping gap therebetween, said mistake detector comprising: a leaf spring fixedly attached to one of said jaws so as to rotate with said one jaw relative to the other jaw of said gripper jaw assembly; spaced apart first and second electrodes fixedly attached to the other of said jaws a portion of said leaf spring lying between said electrodes and normally occupying an intermediate position between said electrodes whereby rotation of said one jaw causes said leaf spring to contact either said first or said second electrode depending upon the number of inserts being gripped by said gripper jaw assembly; and, an electronic detector and indicator means electrically connected to said electrodes and to said leaf spring for detecting and indicating when one of said electrodes is in contact with said leaf spring by completing an electrical circuit which includes said electrodes and said leaf spring.
Claim 3
Dependent Claim
28 words
A mistake detector as claimed in claim 1 wherein said leaf spring contacts the first of said electrodes when said gripper jaw assembly is not holding any inserts.
Claim 4
Dependent Claim
33 words
A mistake detector as claimed in claim 2 wherein said leaf spring contacts the second of said two electrodes when said gripper jaw assembly is gripping more than a desired number of inserts.
Claim 5
Dependent Claim
86 words
A mistake detector as claimed in claim 3 including a mechanically operated electronic gate forming a part of said electronic detector and indicator means, said gate being electrically connected in series with said leaf spring and said contacts and mechanically coupled to said gripper jaw assembly so as to be opened and allow current to flow through saiD electronic detector and indicator means when said gripper jaw assembly is in a predetermined position and moving in a predetermined direction toward and away from an insertion station.
Claim 6
Dependent Claim
25 words
A mistake detector as claimed in claim 4 wherein said electronic gate is open when said gripper jaw assembly is returning from an insertion station.
Claim 7
Dependent Claim
91 words
A mistake detector as claimed in claim 5 including: a shaft, said shaft being fixedly attached to said first jaw so as to change position in accordance with the number of inserts being gripped by said gripper jaw assembly; an arm fixedly clamped to said shaft, said leaf spring being attached to said arm; and, a screw, said scew mounted in a threaded aperture in said arm so as to impinge on and move said leaf spring with respect to said arm and thereby adjust the position of said leaf spring.
Claim 8
Dependent Claim
93 words
A mistake detector as claimed in claim 6 including: an insulator block fixedly attached to said second jaw, said first contact being mounted on one side of said insulator block and said second contact being mounted on the other side of said insulator block; and, a second screw, said second screw forming a portion of said second contact and being mounted in a threaded aperture in said second contact so as to be movable with respect to said leaf spring to thereby adjust the spacing between said second contact and said leaf spring.
Claim 9
Dependent Claim
86 words
A mistake detector as claimed in claim 1 including a mechanically operated electronic gate forming a part of said electronic detector and indicator means, said gate being electrically connected in series with said leaf spring and said contacts and mechanically coupled to said gripper jaw assembly so as to be opened and allow current to flow through said electronic detector and indicator means when said gripper jaw assembly is in a predetermined position and moving in a predetermined direction toward and away from an insertion station.
Claim 10
Dependent Claim
91 words
A mistake detector as claimed in claim 1 including: a shaft, said shaft being fixedly attached to said first jaw so as to change position in accordance with the number of inserts being gripped by said gripper jaw assembly; an arm fixedly clamped to said shaft, said leaf spring being attached to said arm; and, a screw, said screw mounted in a threaded aperture in said arm so as to impinge on and move said leaf spring with respect to said arm and thereby adjust the position of said leaf spring.
Claim 11
Dependent Claim
93 words
A mistake detector as claimed in claim 1 including: an insulator block fixedly attached to said second jaw, said first contact being mounted on one side of said insulator block and said second contact being mounted on the other side of said insulator block; and, a second screw, said second screw forming a portion of said second contact and being mounted in a threaded aperture in said second contact so as to be movable with respect to said leaf spring to thereby adjust the spacing between said second contact and said leaf spring.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |