US3623646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener-inserting machine
Assignee: Karl M Reich Maschinenfabrik GmbH
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Filing: 1969-12-15
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Granted: 1971-11-30
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Expires: 1989-12-15
Abstract
Abstract A fastener-inserting machine such as a nail gun, screw driving gun, or the like with a driving channel for the drive rod and a feed channel for a fastener strip carrying a row of fasteners on one lateral side of a carrier strip. The feed channel extends to and through the driving channel and has a lateral wall recessed from the wall of the driving channel so that during the strokes of the drive rod in the driving channel or its rotation therein when serving as a screw driver, the drive rod will not engage with the carrier strip. For severing headed fasteners such as nails or screws one at a time from the carrier strip and shifting at least the fastener head laterally into the driving channel, a groove in the wall of the driving channel in which the head is at first located has an inclined guide surface, whereby when in a nail gun the fastener is moved forwardly directly by the drive rod or-either in a nail gun or in a screw driving gun-the fastener is so moved by a separate shifting member which is driven by the drive rod only during a fist part of its forward stroke and before the drive rod itself engages with the fastener, the fastener head is laterally deflected by the inclined guide surface into the driving channel.
Inventors
- 👤 Adolf Cast
- 👤 Kurt Reich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:17
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/001; B25C1/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
579 words
A driving tool for driving fasteners into working pieces, each of said fasteners having an enlarged head on one end thereof, said fasteners being adapted to be fed to said tool in position parallel to and at substantially equal distances from each other and being held together in a row by a carrier strip, said carrier strip partly projecting from one lateral side of said row of fasteners, and comprising means for removably connecting said fasteners on said side of said carrier strip, said tool comprising a foot part, a driving channel in said foot part, a drive rod movable back and forth in the axial direction of said driving channel and during its forward stroke adapted to engage upon the next fastener to be driven in said driving channel so as to move said fastener through a front part of said driving channel and out of its open end, a feed channel extending through said foot part and substantially transverse to said driving channel, said feed channel being formed by an inlet slot and an outlet slot in opposite sides of the wall of said foot part, the central axis of each of said slots extending substantially parallel to, but laterally offset from the axis of said driving channel, said inlet slot having a length at least equal to the length of each of said fasteners and being adapted for feeding one of said fasteners at a time therethrough toward said driving channel, the two lateral walls of said inlet slot forming a front wall and back wall, said backwall and the inner wall surface of said driving channel at the same side as said backwall each having a recess therein in straight alignment with each other and adapted for receiving and guiding said projecting part of said carrier strip, each of said recesses having a back wall and such a depth that at least said projecting part of said carrier strip when located in said recess in said wall surface of said driving channel is disposed laterally outside of the path of travel of said drive rod, said inlet slot having a second recess in said backwall and said wall of said driving channel also having a second recess in the same side containing said first recess, said second recesses extending parallel to and spaced from said first recesses and being adapted to receive a part of the head of each of said fasteners passing through said feed channel, said outlet slot having a width substantially equal to the entire thickness of said carrier strip and having a length substantially equal to the length of said recesses, and being adapted for passing said carrier strip without fasteners to the outside of said foot part, means operatively associated with said drive rod for shifting said next fastener laterally away from said recess in said wall surface of said driving channel in a direction toward the inside of said driving channel and for thereby severing said fastener from said carrier strip, said shifting means comprising at least an inclined surface at the side of said second recess in said wall surface of said driving channel facing said first recess therein and tapering in the direction toward said first recess in said wall surface, and means for feeding said carrier strip with said fasteners thereon toward said foot part and through said inlet slot, and thereafter without said fasteners from said outlet slot to the outside of said foot part.
Claim 2
Dependent Claim
579 words
A driving tool for driving fasteners into working pieces, each of said fasteners having an enlarged head on one end thereof, said fasteners being adapted to be fed to said tool in position parallel to and at substantially equal distances from each other and being held together in a row by a carrier strip, said carrier strip partly projecting from one lateral side of said row of fasteners, and comprising means for removably connecting said fasteners on said side of said carrier strip, said tool comprising a foot part, a driving channel in said foot part, a drive rod movable back and forth in the axial direction of said driving channel and during its forward stroke adapted to engage upon the next fastener to be driven in said driving channel so as to move said fastener through a front part of said driving channel and out of its open end, a feed channel extending through said foot part and substantially transverse to said driving channel, said feed channel being formed by an inlet slot and an outlet slot in opposite sides of the wall of said foot part, the central axis of each of said slots extending substantially parallel to, but laterally offset from the axis of said driving channel, said inlet slot having a length at least equal to the length of each of said fasteners and being adapted for feeding one of said fasteners at a time therethrough toward said driving channel, the two lateral walls of said inlet slot forming a front wall and back wall, said backwall and the inner wall surface of said driving channel at the same side as said backwall each having a recess therein in straight alignment with each other and adapted for receiving and guiding said projecting part of said carrier strip, each of said recesses having a back wall and such a depth that at least said projecting part of said carrier strip when located in said recess in said wall surface of said driving channel is disposed laterally outside of the path of travel of said drive rod, said inlet slot having a second recess in said backwall and said wall of said driving channel also having a second recess in the same side containing said first recess, said second recesses extending parallel to and spaced from said first recesses and being adapted to receive a part of the head of each of said fasteners passing through said feed channel, said outlet slot having a width substantially equal to the entire thickness of said carrier strip and having a length substantially equal to the length of said recesses, and being adapted for passing said carrier strip without fasteners to the outside of said foot part, means operatively associated with said drive rod for shifting said next fastener laterally away from said recess in said wall surface of said driving channel in a direction toward the inside of said driving channel and for thereby severing said fastener from said carrier strip, said shifting means comprising at least an inclined surface at the side of said second recess in said wall surface of said driving channel facing said first recess therein and tapering in the direction toward said first recess in said wall surface, and means for feeding said carrier strip with said fasteners thereon toward said foot part and through said inlet slot, and thereafter without said fasteners from said outlet slot to the outside of said foot part.
Claim 3
Dependent Claim
89 words
A driving tool as defined in claim 1, in which saId shifting means comprise a shifting member movable within said foot part, and means connecting said drive rod with said shifting member so that during a first part of the forward stroke of said drive rod and before the free end thereof engages with the upper end of said next fastener to be driven, said drive rod moves said shifting member into engagement with said next fastener so as to shift the same laterally out of said carrier strip.
Claim 4
Dependent Claim
75 words
A driving tool as defined in claim 2, in which said feed channel is laterally offset relative to said driving channel so as to extend substantially tangentially thereto, said shifting member also being adapted to shift at least the upper end of said next fastener out of its offset position into the path of travel of said drive rod in said driving channel during said first part of the forward stroke of said drive rod.
Claim 5
Dependent Claim
60 words
A driving tool as defined in claim 2, in which said feed channel is laterally offset relative to said driving channel so as to extend substantially tangentially thereto, said shifting member also being adapted to shift said next fastener out of its offset position fully into said driving channel to a position substantially in axial alignment with said drive rod.
Claim 6
Dependent Claim
112 words
A driving tool as defined in claim 1, in which said shifting means further comprise a shifting member movable within said foot part, and means connecting said drive rod with said shifting member so that during a first part of the forward stroke of said drive rod and before the free end thereof engages upon the head of said next fastener to be driven, said drive rod moves said shifting member toward and into engagement with said head whereby said part of said head in said second recess in the wall of said driving channel slides along said tapering surface and thereby shifts said next fastener laterally out of said carrier strip.
Claim 7
Dependent Claim
94 words
A driving tool as defined in claim 5, in which said feed channel is laterally offset relative to said driving channel so as to extend substantially tangentially thereto, said shifting member in cooperation with said tapering surface also being adapted during the first part of the forward stroke of said drive rod to shift at least said head of said next fastener out of its offset position in said second recess in said wall of said driving channel and fully into said driving channel and into the path of travel of the drive rod.
Claim 8
Dependent Claim
82 words
A driving tool as defined in claim 4, in which when at least said upper end of said next fastener has been moved by said shifting member out of its offset position to said position in said driving channel, said connecting means disengage from said drive rod so that said drive rod alone continues its forward stroke and engages upon said upper end of said next fastener to move the same toward and out of said open end of said driving channel.
Claim 9
Dependent Claim
72 words
A driving tool as defined in claim 7, in which said fasteners consist of screws each having a slot in its upper end, the lower end of said drive rod forming a flat tip adapted to engage into said slot of said next fastener in said driving channel at least when said connecting means are about to disengage from said drive rod, said drive rod also being rotatable to turn said screw.
Claim 10
Dependent Claim
124 words
A driving tool as defined in claim 3, in which due to the offset position of said feed channel relative to said driving channel said entire next fastener is at first located within a second recess in said wall of said driving channel, the bottom of said second recess containing said first recess, said shifting means further comprising an inclined surface on the end of said second recess adjacent to and tapering in the direction toward the open end of said driving channel and adapted to guide the lower end of said next fastener out of said second recess and into said driving channel when said shifting member engages upon the upper end of said fastener and moves said fastener toward said open end.
Claim 11
Dependent Claim
198 words
A driving tool as defined in claim 9, in which the side of said wall oF said driving channel containing said first and second recesses contains a third recess above said first and second recesses, said shifting member being slidable in said third recess substantially parallel to said drive rod toward and into engagement with said upper end of said next fastener, said connecting means comprising clutch means connecting said drive rod to said shifting member only during said first part of said forward stroke of said drive rod so as to move said shifting member into engagement with said upper end of said next fastener in said second recess, whereby said next fastener is moved by said shifting member for a short distance in the forward direction toward said open end of said driving channel and while said upper end of said next fastener is shifted substantially at the same time with said forward movement laterally into said driving channel, the lower end of said fastener slides along said inclined surface and thereby also laterally into said driving channel, and means for limiting the extent of the forward movement of said shifting member by said drive rod.
Claim 12
Dependent Claim
122 words
A driving tool as defined in claim 6, in which due to the offset position of said feed channel relative to said driving channel, said entire next fastener is at first located within a third recess in said wall of said driving channel, the bottom of said third recess containing said first and second recesses, said shifting means further comprising an inclined surface on the end of said third recess adjacent to and tapering in the direction toward the open end of said driving channel and adapted to guide the lower end of said next fastener out of said third recess and into said driving channel when said shifting member engages upon said head of said fastener and moves said fastener forwardly.
Claim 13
Dependent Claim
169 words
A driving tool as defined in claim 11, in which the side of said wall of said driving channel containing said first, second and third recesses contains above these recesses a fourth recess, said shifting member being slidable within said fourth recess substantially parallel to said drive rod toward and into engagement with said head of said next fastener, said connecting means comprising clutch means connecting said drive rod to said shifting member only during said first part of said forward stroke of said drive rod so as to move said shifting member into engagement with said head in said second recess, whereby said next fastener is moved by said shifting member for a short distance in the forward direction toward said open end of said driving channel and said head and said lower end are shifted substantially at the same time laterally by said inclined surfaces into said driving channel, and means for limiting the extent of the forward movement of said shifting member by said drive rod.
Claim 14
Dependent Claim
184 words
A driving tool as defined in claim 10, in which said shifting member has a transverse bore and said drive rod has a recess in its peripheral surface, said clutch means comprising a locking member adapted during said first part of the forward stroke of said drive rod to be located in said bore and to engage into said recess in said drive rod so as to lock said shifting member to said drive rod so that during said first part of said forward stroke said drive rod takes along said shifting member, said foot part also having a transverse bore terminating into the bottom surface of said third recess, said limiting means comprising a compression spring member in said last bore and engaging upon said shifting member during said first part of said forward stroke of said drive rod, said locking member being adapted to be expelled from said recess in said drive and to engage instead into said last bore against the action of said spring member at the end of said first part of said forward stroke of said drive rod.
Claim 15
Dependent Claim
50 words
A driving tool as defined in claim 13, in which said limiting means further comprise a stop member against which said shifting member engages when said two transverse bores are substantially in axial alignment with each other and said locking member can then enter said bore in said foot part.
Claim 16
Dependent Claim
121 words
A driving tool as defined in claim 13, in which said locking member consists of a ball, and said recess in the peripheral surface of said drive rod consists of an annular groove having such a cross-sectional shape that during the first part of the forward stroke of said drive rod said ball engages into said annular recess and takes along said shifting member until said two transverse bores are substantially in axial alignment with each other, while during the further forward stroke of said drive rod, said ball is expelled from said annular recess by a cam action of the surface thereof and is thereby pressed into said bore in said foot part against the action of said spring member.
Claim 17
Dependent Claim
43 words
A driving tool as defined in claim 2, in which said shifting member is provided with a stop surface which, when said shifting member is moved toward and in engagement with said next fastener prevents a following fastener from entering said driving channel.
Claim 18
Dependent Claim
78 words
A driving tool as defined in claim 2, in which said shifting member is provided with a stop surface which is inclined relative to the direction of the forward movement of said shifting member so that, if a following fastener enters for a short distance into said driving channel when said shifting member is moved toward said next fastener in said driving channel, said following fastener will be deflected by said inclined stop surface from said driving channel.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |