Patent US3826419A successfully refreshed from Google Patents.
US3826419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for sequentially driving large headed gimp nails
Assignee: Individual
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Filing: 1972-09-15
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Granted: 1974-07-30
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Expires: 1992-09-15
Abstract
Abstract A device for sequentially driving nails, especially gimp nails connected in a row by a tape, into a workpiece, in which the nails are fed seriatim by a pawl adapted to engage behind the leading nail of the row into a cylindrical passage in which a driver rod is movable along an active stroke for driving the nail in the passage into a workpiece. Movement of the driver rod along its active stroke is actuated by a trigger lever mounted at one end for pivotal movement between a rest position and an actuating position. The trigger lever has at its other end a transverse pin engaging in a slot provided in a second lever pivotally mounted at one end and carrying on at the other end the aforementioned pawl. The slot has two slot portions including an angle with each other and arranged so that when the trigger lever moves from the rest towards the actuating position, the pin riding along one of the slot portions will cause the pawl to move the leading nail into the aforementioned passage, while during further movement of the pin through the other slot portion the pawl will be slightly retracted before the trigger lever reaches its actuating position.
Inventors
- 👤 G Maestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:01
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/001; B25C1/003
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
292 words
A device for sequentially driving gimp nails, connected in a row by a tape and having each a relatively large head and a coaxial pointed stem, into a workpiece, the device comprising, in combination, reciprocable driver means including a driver rod movable along an active stroke for engaging the head of a nail and driving the latter into a workpiece, and a return stroke; guide means including a cylindrical passage for guiding said rod and the nail driven thereby; passage means communicating at one end with said cylindrical passage for guiding the tape connected nails toward said cylindrical passage; actuating means for actuating said reciprocatable driver means and including a trigger lever pivotally mounted at one end so as to be tiltable from a rest position to an actuating position causing said driver rod to move along its active stroke; and feeding means for feeding the lead nail of said row in said passage means into said cylindrical passage, said feeding means comprising a pawl arranged to engage behind the leading nail, a second lever carrying said pawl at one end and pivotally mounted at the other end thereof, said second lever being formed with a slot having two slot portions including an angle with each other, and a pin fixed to the other end of said trigger lever slidingly engaging said slot, said slot portions being arranged in such a manner so that during movement of said pin in one of said slot portions, said pawl is moved towards said cylindrical passage to place the leading nail into the path of said driver rod, and so that movement of said pin in the other slot portion causes partial return movement of said pawl before said trigger lever reaches its active position.
Claim 2
Independent Claim
292 words
A device for sequentially driving gimp nails, connected in a row by a tape and having each a relatively large head and a coaxial pointed stem, into a workpiece, the device comprising, in combination, reciprocable driver means including a driver rod movable along an active stroke for engaging the head of a nail and driving the latter into a workpiece, and a return stroke; guide means including a cylindrical passage for guiding said rod and the nail driven thereby; passage means communicating at one end with said cylindrical passage for guiding the tape connected nails toward said cylindrical passage; actuating means for actuating said reciprocatable driver means and including a trigger lever pivotally mounted at one end so as to be tiltable from a rest position to an actuating position causing said driver rod to move along its active stroke; and feeding means for feeding the lead nail of said row in said passage means into said cylindrical passage, said feeding means comprising a pawl arranged to engage behind the leading nail, a second lever carrying said pawl at one end and pivotally mounted at the other end thereof, said second lever being formed with a slot having two slot portions including an angle with each other, and a pin fixed to the other end of said trigger lever slidingly engaging said slot, said slot portions being arranged in such a manner so that during movement of said pin in one of said slot portions, said pawl is moved towards said cylindrical passage to place the leading nail into the path of said driver rod, and so that movement of said pin in the other slot portion causes partial return movement of said pawl before said trigger lever reaches its active position.
Claim 3
Dependent Claim
43 words
A device as defined in claim 1, and including spring-biased jaw means in said passage means closely adjacent said cylindrical passage for centralizing the stem of a nail relative to the axis of said cylindrical passage before the nail enters such cylindrical passage.
Claim 4
Dependent Claim
77 words
A device as defined in claim 1, wherein said cylindrical passage is formed with a pair of opposite openings, including a pair of pivotally mounted wings respectively extending through said openings, and having slanted faces converging toward the axis of the cylindrical passage and spring means engaging said wings for urging said slanted faces towards each other for guiding the pointed end of a nail along said axis during driving of said nail by said driver rod.
Claim 5
Dependent Claim
51 words
A device as defined in claim 1, wherein said passage means for guiding said tape connected nails toward said cylindrical passage comrises a central groove for the passage of the stems of said nails therethrough, and a pair of coplanar faces to opposite sides of said groove for guiding The tape.
Claim 6
Dependent Claim
20 words
A device as defined in claim 1 including a hose magazine connected to the other end of said passage means.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |