US3668763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire strip and wrap bit
Assignee: International Standard Electric Corp
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Filing: 1970-05-04
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Granted: 1972-06-13
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Expires: 1990-05-04
Abstract
Abstract A wire-wrapping bit cuts and strips a wire end and wraps a terminal in one operation using ''''free'''' ends of insulated wire (that is, not intended to be drawn up tight). The cutting elements are removed, and an easy-feed wire hold guide and length gauge are provided, whereby wire may be fed through the guide up to a striker flange on the shank of the bit, for determining the skinner length and the wire held against withdrawal by being trapped in the skinner plate. A collar surrounding the feed guide assists the feed and permits wire to be fed at 45* to the bit and prevents ''''snatch.'''' An expanding bit shank, and a feed channel extending its length, both assist in ejection of the insulation after the wrapping operation.
Inventors
- 👤 Percy Leonard Micklewright
- 👤 Ernest Victor Scaddan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:59
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/033; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5176; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53209; Y10T29/53213; Y10T29/53235
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
272 words
A wire-wrapping bit comprising an elongated rotatable portion and a stationary portion concentric with part of said rotatable portion for supporting said rotatable portion while permitting relative rotational motion between said portions, said rotatable portion having at a first end thereof a jaw member fixed to said rotatable portion, said jaw member having a centrally located axial aperture for receiving the end of a terminal post about which wire is to be wrapped, said jaw member also having an enclosed substantially quadrantal feed aperture, a narrow stripping aperture and a guiding channel extending into a lengthwise channel of said rotatable portion, at least one edge of said stripping aperture being sharpened to permit the stripping of insulation from said wire as said wire is to be wrapped about said terminal post, said quadrantal feed aperture being so contoured and oriented with respect to said stripping aperture and said guiding channel that wire may be fed into said bit at an angle of approximately 45* backwards from said bit, said rotatable portion extending through said stationary portion and having at the second end of said rotatable portion a shaped terminus for allowing torque to be applied to said rotatable portion, said stationary portion having intermediate said first and second ends of said rotatable portion a flanged and partially cowled member enclosing said rotatable portion for determining the length of wire to be fed through said jaw member, said predetermined length being thereafter locked against withdrawal back through said stripping aperture, and rotation of said rotatable member causing stripped wire to be fed back through said jaw member and wrapped around said terminal post.
Claim 2
Dependent Claim
272 words
A wire-wrapping bit comprising an elongated rotatable portion and a stationary portion concentric with part of said rotatable portion for supporting said rotatable portion while permitting relative rotational motion between said portions, said rotatable portion having at a first end thereof a jaw member fixed to said rotatable portion, said jaw member having a centrally located axial aperture for receiving the end of a terminal post about which wire is to be wrapped, said jaw member also having an enclosed substantially quadrantal feed aperture, a narrow stripping aperture and a guiding channel extending into a lengthwise channel of said rotatable portion, at least one edge of said stripping aperture being sharpened to permit the stripping of insulation from said wire as said wire is to be wrapped about said terminal post, said quadrantal feed aperture being so contoured and oriented with respect to said stripping aperture and said guiding channel that wire may be fed into said bit at an angle of approximately 45* backwards from said bit, said rotatable portion extending through said stationary portion and having at the second end of said rotatable portion a shaped terminus for allowing torque to be applied to said rotatable portion, said stationary portion having intermediate said first and second ends of said rotatable portion a flanged and partially cowled member enclosing said rotatable portion for determining the length of wire to be fed through said jaw member, said predetermined length being thereafter locked against withdrawal back through said stripping aperture, and rotation of said rotatable member causing stripped wire to be fed back through said jaw member and wrapped around said terminal post.
Claim 3
Dependent Claim
236 words
A wire wrapping bit which comprises a cylindrical bit portion rotatable within a relatively fixed portion and adapted to be rotated from its rearward end, and carrying at its forward end a jaw assembly consisting of an enclosed wire feed guide means and a wire hold and strip plate, together with further guide means in the surface of said cylindrical bit portion so orientated with respect to one another than an insulated wire of suitable core size for said bit fed forward-to-rearward into said bit will be trapped by said plate and restrained against withdrawal; said fixed portion carrying at its forward end a flanged member arranged to act as a stop to wire fed into said bit and along said further guide means so as to determine the length of wire to be wrapped; said rotatable portion with said jaw assembly being bored axially to accept a terminal of predetermined size around which a wrapped connection is to be made; whereby on feeding an insulated wire as aforesaid into said bit and up to said stop and centering said bit over a terminal to be wrapped and thereafter causing said bit to be rotated, the insulation on the wire fed into said bit is severed at said strip plate and the wire is withdrawn from said bit as a bare wire and wrapped around said terminal, and the severed insulation thereafter ejected from said bit.
Claim 4
Dependent Claim
236 words
A wire wrapping bit which comprises a cylindrical bit portion rotatable within a relatively fixed portion and adapted to be rotated from its rearward end, and carrying at its forward end a jaw assembly consisting of an enclosed wire feed guide means and a wire hold and strip plate, together with further guide means in the surface of said cylindrical bit portion so orientated with respect to one another than an insulated wire of suitable core size for said bit fed forward-to-rearward into said bit will be trapped by said plate and restrained against withdrawal; said fixed portion carrying at its forward end a flanged member arranged to act as a stop to wire fed into said bit and along said further guide means so as to determine the length of wire to be wrapped; said rotatable portion with said jaw assembly being bored axially to accept a terminal of predetermined size around which a wrapped connection is to be made; whereby on feeding an insulated wire as aforesaid into said bit and up to said stop and centering said bit over a terminal to be wrapped and thereafter causing said bit to be rotated, the insulation on the wire fed into said bit is severed at said strip plate and the wire is withdrawn from said bit as a bare wire and wrapped around said terminal, and the severed insulation thereafter ejected from said bit.
Claim 5
Dependent Claim
112 words
A wire-wrapping bit as claimed in claim 2 wherein said further guide means in the surface of said cylindrical bit portion comprises a narrow channel cut in the surface of said portion above said axial borehole and extending substantially the length of said cylindrical portion up to said flanged stop member, but widening ouT on its leading edge towards said jaw assembly to provide an entry therefrom, said widened out portion being covered for part at least of the entry by a curved member tapering internally towards the narrower part of the channel so as to guide wire easily into this channel, said rotatable portion being enlarged slopingly towards said stop member.
Claim 6
Dependent Claim
77 words
A wire-wrapping bit as claimed in claim 2, wherein said wire hold and strip plate consists of a disc having an axial hole for said terminal and a slot cut across the disc with a shearing edge on the rearward surface of said disc adjacent said cylindrical bit portion, said slot being of a width to accept the core wire of an insulated wire as aforesaid and thereafter widening out towards the leading edge of said disc.
Claim 7
Dependent Claim
96 words
A wire-wrapping bit as claimed in claim 2, wherein said wire feed guide means consists of a disc having a central hole and a contoured aperture in one quadrant, a recess around said central hole on the forward side of said disc for accommodating a turn of wire when wrapped around a terminal, said recess merging into said aperture to form a straight edge at the trailing side of said aperture and tangential to said recess, the leading edge of said aperture being curved in a radial direction, and said aperture being closed at the circumference.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |