GB2175520A - Hand-held wrapping tool - Google Patents

Abstract

The tool, for wrapping wire around a pin, comprises an elongate body 2 provided in one end thereof with an elongate hole 6 for receiving an end portion of the pin to be wrapped. One end 4 of the elongate body has two ribs 8, 10 extending substantially diametrically one to each side of the hole, the ribs serving consequent upon relative rotation between the tool and the pin to wrap a wire around a portion of the pin and to part the wire when desired. The rib 8 has a cutting portion 12 for wire parting and the rib 10 has a coiling and scraping blade 14 spaced radially from the hole 6. <IMAGE>

Description

SPECIFICATION Improvements in or relating to wrapping tools The present invention relates to wrapping tools and more particularly to a tool for wrapping winding wire around a pin, such as for example a small coil bobbin terminal pin associated with a transformer.

According to the present invention there is provided a wrapping tool for wrapping wire around a pin, comprising a hand holdable elongate body provided in one end thereof with an elongate hole for receiving an end portion of the pin to be wrapped, said one end of the elongate body having two ribs extending substantially diametrically one to each side of the hole, the ribs service consequent upon relative rotation betwen the tool and the pin to wrap a wire around a portion of the pin and to part the wire when desired.

In a preferred embodiment an edge face of one of the ribs is located substantially flush with a portion of the edge of the hole defined on said one end of the elongate body, and advantageously the rib has a cutting edge defined on a face remote from said one end of the elongate body.

In a further preferred embodiment an edge face of the second rib, faces and is spaced from the edge of the hole. The edge face of the second rib is adpated to be used to facilitate the wrapping and scraping of the wire.

In a further preferred embodiment the hole has a substantially circular cross-section.

The present invention will be described further, by way of example with refernce to the accompanying drawings in which; Figure 1 shows a wrapping tool according to the present invention during an initial stage of a wrapping operation.

Figure 2 shows the wrapping tool of Figure 1 during a subsequent stage of the wrapping operation and; Figure 3 shows the wrapping tool of Figure 1 during a final stage of the wrapping operation.

Referring to Figure 1 a wrapping tool comprises a hand holdable elongate body 2having an end face 4 down through the centre of which extends an elongate hole 6. Two ribs 8 and 10 extend orthogonally away from the surface of the end face 4, the ribs 8 and 10 being positioned diametrically opposite one another on each side of the hole 6.

An orthogonal edge face of the rib 8 is flush with the edge of the hole defined on the end face 4 and a cutting edge 12 is formed on a face remote from the end face 4. An orthogonal edge face 14 of the rib 10 is spaced by a small gap from the edge of the hole defined on the end face 4.

In use the hole 6 of the tool receives a portion of a pin 16, for example a terminal pin extending from a base 18 of a small coil bobbin associated with a transformer (not shown). A wire 20 is captured in the gap defined between the face 14 and the opposite surface of the pin 16, the winding of the wire 20 around the pin 16 being effected by turning the body 2 in a clockwise direction (Arrow A) about the pin 16. During the turning operation the edge 14 of the rib 10 also serves to scrape the enamel from the surface of the wire 20.

When the desired number of turns of the wire 20 have been wrapped (Figure 2) the main body of the tool is pushed towards the base 18 of the pin 16, thereby compressing the turns. Further pressure and a quick twist of the body 2 tightens the wrap of wire 20 and shears the top half turn, leaving a clean break in the wire next to the pin 16.

The cutting edge 12 of the rib 8 is used during this final operational stage for scraping and cutting the trailing edge of the wire 20 (Figure 3). The wire wrap is then ready to be soldered.

1. A wrapping tool for wrapping wire around a pin, comprising a hand holdable elongate body provided in one end thereof with an elongate hole for receiving an end portion of the pin to be wrapped, said one end of the the elongate body having two ribs extending substantially diametrically one to each side of the hole, the ribs serving consequent upon relative rotation between the tool and the pin to wrap a wire around a portion of the pin and to part the wire when desire.

2. A wrapping tool as claimed in claim 1 wherein an edge face of one of the ribs is located substantially flush with a portion of the edge of the hole defined on said one end of the elongate body.

3. A wrapping tool as claimed in claim 2 wherein said one of the ribs has a cutting edge defined on a face remote from said one end of the elongate body.

4. A wrapping tool as claimed in claim 2 or claim 3 wherein an edge face of the second rib, faces and is spaced from the edge of the hole.

5. A wrapping tool as claimed in claim 4 wherein the edge face of the second rib is adapted to be used to facilitate the wrapping and scraping of the wire.

6. A wrapping tool substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements in or relating to wrapping tools The present invention relates to wrapping tools and more particularly to a tool for wrapping winding wire around a pin, such as for example a small coil bobbin terminal pin associated with a transformer. According to the present invention there is provided a wrapping tool for wrapping wire around a pin, comprising a hand holdable elongate body provided in one end thereof with an elongate hole for receiving an end portion of the pin to be wrapped, said one end of the elongate body having two ribs extending substantially diametrically one to each side of the hole, the ribs service consequent upon relative rotation betwen the tool and the pin to wrap a wire around a portion of the pin and to part the wire when desired. In a preferred embodiment an edge face of one of the ribs is located substantially flush with a portion of the edge of the hole defined on said one end of the elongate body, and advantageously the rib has a cutting edge defined on a face remote from said one end of the elongate body. In a further preferred embodiment an edge face of the second rib, faces and is spaced from the edge of the hole. The edge face of the second rib is adpated to be used to facilitate the wrapping and scraping of the wire. In a further preferred embodiment the hole has a substantially circular cross-section. The present invention will be described further, by way of example with refernce to the accompanying drawings in which; Figure 1 shows a wrapping tool according to the present invention during an initial stage of a wrapping operation. Figure 2 shows the wrapping tool of Figure 1 during a subsequent stage of the wrapping operation and; Figure 3 shows the wrapping tool of Figure 1 during a final stage of the wrapping operation. Referring to Figure 1 a wrapping tool comprises a hand holdable elongate body 2having an end face 4 down through the centre of which extends an elongate hole 6. Two ribs 8 and 10 extend orthogonally away from the surface of the end face 4, the ribs 8 and 10 being positioned diametrically opposite one another on each side of the hole 6. An orthogonal edge face of the rib 8 is flush with the edge of the hole defined on the end face 4 and a cutting edge 12 is formed on a face remote from the end face 4. An orthogonal edge face 14 of the rib 10 is spaced by a small gap from the edge of the hole defined on the end face 4. In use the hole 6 of the tool receives a portion of a pin 16, for example a terminal pin extending from a base 18 of a small coil bobbin associated with a transformer (not shown). A wire 20 is captured in the gap defined between the face 14 and the opposite surface of the pin 16, the winding of the wire 20 around the pin 16 being effected by turning the body 2 in a clockwise direction (Arrow A) about the pin 16. During the turning operation the edge 14 of the rib 10 also serves to scrape the enamel from the surface of the wire 20. When the desired number of turns of the wire 20 have been wrapped (Figure 2) the main body of the tool is pushed towards the base 18 of the pin 16, thereby compressing the turns. Further pressure and a quick twist of the body 2 tightens the wrap of wire 20 and shears the top half turn, leaving a clean break in the wire next to the pin 16. The cutting edge 12 of the rib 8 is used during this final operational stage for scraping and cutting the trailing edge of the wire 20 (Figure 3). The wire wrap is then ready to be soldered. CLAIMS

1. A wrapping tool for wrapping wire around a pin, comprising a hand holdable elongate body provided in one end thereof with an elongate hole for receiving an end portion of the pin to be wrapped, said one end of the the elongate body having two ribs extending substantially diametrically one to each side of the hole, the ribs serving consequent upon relative rotation between the tool and the pin to wrap a wire around a portion of the pin and to part the wire when desire.

2. A wrapping tool as claimed in claim 1 wherein an edge face of one of the ribs is located substantially flush with a portion of the edge of the hole defined on said one end of the elongate body.

3. A wrapping tool as claimed in claim 2 wherein said one of the ribs has a cutting edge defined on a face remote from said one end of the elongate body.

4. A wrapping tool as claimed in claim 2 or claim 3 wherein an edge face of the second rib, faces and is spaced from the edge of the hole.

5. A wrapping tool as claimed in claim 4 wherein the edge face of the second rib is adapted to be used to facilitate the wrapping and scraping of the wire.

6. A wrapping tool substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.