Handheld Loop Former for Beading Wire

Abstract

A handheld loop former for beading wire is provided. The loop former comprises a cutting lever, a slotted forming platform, a forming lever, and two scissors links. The cutting lever has a combination shear blade/forming die at its distal end. The slotted forming platform has a medially located slot, a shearing ledger, and a forming stanchion. The forming lever has a second forming die at its distal end. The cutting lever, forming platform at the medially located slot, and forming lever are journaled together with a pivot pin. Each of the forming lever and the cutting lever is journaled to one of the scissors links. Both scissors links are journaled to the forming platform. The sheer blade/forming die passes closely to the shearing ledger and with the second forming die envelops the forming stanchion when the forming lever and cutting lever are urged together. The forming platform is drawn proximally.

Claims

1. A handheld loop former for beading wire comprising: a) a cutting lever having a combination shear blade/forming die formed thereupon at its distal end, said cutting lever having a shear pivot journal formed therein proximate said combination shear blade/forming die but displaced medially therefrom and a shear scissors journal formed therein spaced still further medially from said shear pivot journal; b) a slotted forming platform having a medially located slot formed therein and a proximally located forming platform scissors journal, a shearing ledger formed on a distal portion of said slotted forming platform, and a forming stanchion proximate thereto but displaced medially therefrom; c) a forming lever having a second forming die formed thereupon at its distal end, a forming journal formed therein proximate said second forming die but displaced medially therefrom, and a forming scissors journal formed therein spaced still further medially from said forming journal; d) a left scissors link having a proximal journal and a distal journal formed therein; e) a right scissors link having a proximal journal and a distal journal formed therein; f) a first pivot pin passing through: a. said shear pivot journal on said cutting lever; b. said medially located slot on said slotted forming platform; and c. said forming journal formed in said forming lever; g) a second pivot pin passing through: a. the proximally located forming platform scissors journal in said slotted forming platform; and b. said proximal journal of said left scissors link and said proximal journal of said right scissors link; h) a first scissors pin passing through the distal journal in one of said scissors links and said forming scissors journal in said forming lever; and i) a second scissors pin passing through the distal journal in the other of said scissors links and said shear scissors journal in said cutting lever; said journals and said slot being disposed such that the combination sheer blade/forming die passes closely proximate to said shearing ledger on said forming platform when the distal ends of said cutting lever and forming lever are urged inwardly, said forming platform translates proximally with said combination shear blade/forming die and said second forming die being spaced proximally above said forming stanchion when said forming lever and cutting lever are widely separated but enveloping said forming stanchion with the distal portions of the combination shear blade/forming die and second forming die being disposed distally beneath said forming stanchion and enveloping said forming stanchion when said forming lever and cutting lever are urged together.

2. The handheld loop former for beading wire of claim 1, wherein said cutting lever and forming lever are journaled together so that by urging together the proximal ends of the forming and cutting levers, the combination shear blade/forming die and the second forming die approach each other along generally coincident circular paths, while the first pivot pin journaling the cutting lever and forming lever rides in the medially located slot of the slotted forming platform such that, as the proximal ends of the forming and cutting levers are pressed together, the combination shear blade/forming die passes inboard of the shearing ledger and in so doing trims beading wire placed medially above said forming stanchion but distally to said combination shear blade/forming die and said second forming die.

3. The handheld loop former for beading wire of claim 2, wherein, by urging together the proximal ends of the forming and cutting levers, the forming die portion of the combination shear blade/forming die urges the trimmed end of the beading wire inwardly around the forming stanchion.

4. The handheld loop former for beading wire of claim 3, wherein by urging together the proximal ends of the forming and cutting levers, the proximal portion of the forming platform is drawn proximally therebetween such that the forming die portion of the combination shear blade/forming die and the second forming die envelop the forming stanchion so that beading wire in engagement with the forming stanchion is wrapped thereabout forming a generally circular loop.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The invention is described in detail below with reference to the appended drawings, wherein like numerals designate similar parts. In the Figures:

[0006] FIG. 1 is an exploded perspective schematically illustrating the components of the handheld loop former beading wire of the present invention; and

[0007] FIGS. 2-8 illustrate the action of the loop forming mechanism as the handles are urged inwardly shearing beading wire therein to length and forming it around the forming stanchion.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0008] The invention is described in detail below with reference to several embodiments and numerous examples. Such discussion is for purposes of illustration only. Modifications to particular examples within the spirit and scope of the present invention, set forth in the appended claims, will be readily apparent to one of skill in the art. Terminology used herein is given its ordinary meaning consistent with the exemplary definitions set forth immediately below.

[0009] In FIG. 1, loop former 10 is comprised of cutting lever 12 having combination shear blade/forming die 14 formed at the distal portion thereof having shear pivot journal 16 formed penedistally therein with shear scissors journal 18 formed antepenedistally proximate thereto. Proximal end 20 of cutting lever 12 is provided with cushioned handle pad 22. Forming lever 24 has forming die 26 formed distally thereupon with forming journal 28 being formed penedistally therein and forming scissors journal 30 being formed antepenedistally proximate thereto. Forming platform 32 has shearing ledger 34 formed distally thereupon with forming stanchion 36 being formed proximate thereto penedistally. Translation slot 38 is formed inwardly thereof while forming platform scissors journal 40 is formed in the proximal portion of forming platform 32. Scissors links 42 and 44 are provided with translation journals 46 and 48 as well as pivot journals 50 and 52. When assembled, the constituents of loop former 10 are held together by pins 54 provided with washers 56 and retaining clips 58 to allow smooth motion in cooperation as a portion of wire is cut to length and formed as described hereinafter.

[0010] In FIG. 2, wire 60 has beads 62 retained thereupon with projecting end 64 of wire 60 placed in contact with forming die 26, forming stanchion 36 and combination shear blade/forming die 14 with forming stanchion 36 below wire 60 while forming die 26 and combination shear blade/forming die 14 are disposed above it. In FIG. 3, cutting lever 12 and forming lever 24 are beginning to be urged inwardly, drawing forming platform 32 upwardly while forming die 26 and combination shear blade/forming die 14 engage wire 60 while pivoting inwardly and downwardly relative to forming stanchion 36 and shearing ledger 34 on forming platform 32 forming incipient bend 66 in wire 60. In FIG. 4, combination shear blade/forming die 14 has engaged wire 60 and shearing ledger 34 severing projecting end 64 of wire 60 therefrom while forming platform 32 has been drawn further upwardly relative to combination shear blade forming die 14 and forming die 26 amplifying incipient bend 66 in wire 60. In FIG. 5, forming platform 32 bearing shearing ledger 34 has been drawn still further upwardly while combination shear blade/forming die 14 and forming die 26 moving inwardly are beginning to envelop forming stanchion 36 and beginning to wrap wire 60 around forming stanchion 36. In FIG. 6, forming die 26 and combination shear blade/forming die 14 are beginning to envelop forming stanchion 36 forcing wire 60 into a U-shaped bend 66. In FIG. 7, forming platform 32 has been drawn upwardly to such an extent that distal ends of both combination shear blade/forming die 14 and forming die 26 are now below forming stanchion 36 and loop is almost completely formed in wire 60. FIG. 8 illustrates completion of the forming cycle with forming stanchion 36 in its uppermost position with combination shear blade/forming die 14 and forming die 26 enveloping formed loops 66 and forming stanchion 36.

[0011] Preferably when loop former 10 is in the conformation illustrated in FIG. 8, the interior surface of combination shear blade/forming die 14 and forming die 26 are separated from forming stanchion 36 by little more than the diameter of forming wire 60 while the lateral separation between combination shear blade/forming die 14 and forming die 26 is similarly only slightly in excess of the diameter of wire 60. Is important to note that the distal extremities of combination shear blade/forming die 14 and forming die 26 are above forming stanchion 36 by a distance roughly equivalent to the diameter of wire 60 at the initiation of the forming process yet both are beneath it by approximately the same distance due to upward translation of forming platform 32 relative to shear pivot journal 16 and forming scissors journal 30 as a consequence of cutting lever 12 and forming lever 24 being urged together.

[0012] While the invention has been described in detail, modifications within the spirit and scope of the invention will be readily apparent to those of skill in the art. In view of the foregoing discussion, relevant knowledge in the art and references discussed above in connection with the Background and Detailed Description, the disclosures of which are all incorporated herein by reference, further description is deemed unnecessary. In addition, it should be understood that aspects of the invention and portions of various embodiments may be combined or interchanged either in whole or in part. Furthermore, those of ordinary skill in the art will appreciate that the foregoing description is by way of example only, and is not intended to limit the invention.