GB2192826A - Vice - Google Patents

Abstract

A vice for use in the production of fishing flies or lures comprises a G-clamp 10 slidably carrying a stand 13. A support 15 is mounted at the top of the stand 13. The support 15 carries a vice body 30 with jaws 46 which can be operated by a spring biassed lever 51. The vice body 30 is mounted for rotation in the support 15 with frictional resistance therebetween. The support 15 also carries a clamping member 17 including a cap 21 and a pair of washers 24 and 25 spring biassed towards the cap 21. Ribbing or body material used in fishing flies or lures can be temporarily retained by the clamping member 17 whilst winding thread onto a hook held in the jaws 46. <IMAGE>

Description

SPECIFICATION Vice The present invention relates to a vice, more particularly to a vice for use in the production of fishing flies or lures.

When producing fishing flies, it is common to clamp a portion of the shank of a fishing hook in a vice so that materials can be tied to the exposed portion of the shank to form the fly. The method of production often involves winding lengths of thread (silk) and tinsel or other ribbing or body material around the hook alternately. When performing such winding, it is desirable to leave the lengths of body or ribbing material attached to the shank while further winding of the thread is effected.

However, this procedure suffers from the problem that the material which is not being wound is left free and can interfere with the winding operation.

It is an object of a first aspect of the present invention to- overcome the above described problem and provide a vice which incorporates means for conveniently retaining temporarily unused materials so that it does not interfere with the other fly making operation.

A further problem in the production of fishing flies is that it is necessary to adjust the attitude of the hook in the vice. This involves opening the vice, repositioning the hook and closing the vice.

It is a further object of a second aspect of the present invention to provide a vice in which the chuck for holding a work piece is rotatable relative to the main part of the vice.

In accordance with the first aspect of the present invention, there is provided a vice comprising a chuck for gripping a work piece, said chuck being mounted on a body and said body being mounted on a support, means attached to the body for operating the chuck and clamping means on said vice separate from a said chuck comprising a pair of clamping members, at least one of which is resiliently biassed towards the other.

In accordance with the second aspect of the present invention, there is provided a vice comprising a chuck for gripping a work piece, said chuck being on a body, and said body being mounted on support, said body being rotatable relative to said support such that said chuck can be rotated through any angle to a desired position relative to the support and retained in said position by frictional engagement between said support and said body.

It is particularly preferred that the vice incorporates embodiments of both the first and second aspects of the present invention.

Preferably, said chuck comprises a pair of jaws surrounded by a collar, relative movement of said jaws and collar effecting opening and closing of the jaws.

It is also preferred that the support is rotatably.mounted on a stand which can be fixed to a work surface or bench etc.

The body is typically an elongate tubular member which projects through a hole in the support, the chuck being located at one end of said member.

The clamping means preferably comprises a disc attached to the support by means of a peg extending axially from the centre of the disc in an axial direction, at least one washer and a compression spring being mounted on said peg so that said spring engages said support and urges said at least one washer against the disc, the or one of the washers and the disc forming the said pair of clamping members. It is also preferred that the clamping means is remote from the chuck.

Said means for operating the chuck is conveniently an elongate member mounted within the body for displacement therein and acting on the jaws, said means being actuatable by a manually operable lever acting on the member via a cam.

In the accompanying drawings; Figure 1 is a side view of a vice incorporating embodiments of the first and second aspect of the present invention; Figure 2 is a section side view of the upper part of the vice shown in Fig. 1; and Figure 3 is a detailed view of the cam and lever arrangement shown in Figs. 1 and 2.

Referring now to the drawings, the vice shown therein comprises an adjustable screw G-clamp 10 for attaching the vice to a work bench (not shown) etc. The G-clamp 10 has a verticai plain bore 12 in which a vertical stainless steel stand 13 is slidingly engaged. A screw-adjustable locking lever 14 serves to fix the stand 13 at a desired height. The upper end of the stand 13 is bent over at a slight angle. A cylindrical brass support 15 is fixedly secured to said upper end of the stand 13.

The support 15 has a bore 16 provided axially through the mid section thereof. At the upper end of the support 15, there is a clamping device generally indicated by reference numeral 1 7. Three concentric bores 18, 19 and 20 are provided in the upper end of the support 15. A circular cap 21 is provided over said bores 18, 19 and 20, the cap 21 being attached to the support 15 by means of a peg 23 which projects axially from the centre of cap 21 and forms an interference fit in the bore 20. A compression spring 22 is provided around said peg 23 and seats in the bore 19. A pair of washers 24, 25 is provided around the peg 23 between the spring 22 and the cap 21 such that the spring 22 is held in compression and urges the washers 24, 25 upwards so that the upper washer 25 is urged against the cap 21 and the lower washer 24 is urged against the upper washer 25.The upper and lower edges of the washer 25, the upper edge of the washer 24 and the lower edge of the cap 21 are all bevelled allowing lengths of body material or the like to be forced between the washers 24, 25 or the washer 25 and cap 21 to be gripped thereby. In the clamping device 17 there are two clamping washers 24, 25 but it will be appreciated that only one or more than two can be used depending upon the number of separate items to be clamped. Limited downward movement of the washers 24, 25 against the action of spring 22 is permitted before ther washer 24 abuts against the upper end of body 15 around the bore 18.

An elongated stainless steel cylindrical vice body 30 projects through the bore 16 in the support 15. The body 30 is of three-part construction comprising a rear section 31, a middle section 32 and chuck 33 all of generally circular cross section. One end of the rear sections 31 extends from one end of the bore 16 and houses a chuck-operating mechanism described below. The bore 16 has a central portion 34 of reduced diameter. The forward end region of the rear section 31 is stepped to define reduced diameter regions 37 and 39. The region 37 has a diameter which is marginally less than that of the central portion 34. A pair of rubber O-rings 35, 36 are provided around the outer surface of the portion 37 and engage against the central portion 34 to act as bearings with frictional resistance.

The region 39 of the rear section 31 is force fitted into the open rear end 40 of the middle section 32 of the body 30. The middle section has an intermediate portion 41 of reduced internal diameter. A forward end portion 42 of the middle section 32 is internally screwthreaded. A correspondingly externally threaded portion 43 is provided at the rear end of the chuck 33 so as to facilitate coarse adjustment and easy changing of the chuck.

The outer surface of the centre section of the chuck 33 is ribbed to provide a better grip when rotating the chuck 33. The forward end of the chuck 33 forms a collar 45 through which jaws 46 project. Both the inner and outer diameters of the collar 45 taper inwardly toward the open end thereof. The jaws 46, in this case there are two, are machined from a single piece of steel so as to be resiliently biassed apart. Tapered outer edges of the jaws 46 are urged against a tapered inner surface of the chuck collar 45.

The above mentioned chuck operating mechanism comprising a cam 50 which is eccentrically rotatably mounted by pivot pin 49 within the rear section 31. An operating lever 51 is attached to the cam 50 and projects through a slot 52 in the wall of section 31. A compression spring 53 is located between the cam 50 and an end wall of the rear section 31. A push rod 54 is slidably mounted within the body 30 between the cam 50 and the jaws 46. The jaws 46 have a rear end of non-circular section engaged in a correspondingly recessed formation 55 at the front end of the push rod 54. Thus, the jaws 46 can be easily removed and replaced by a different sized set of jaws upon detachment of the chuck 33 from the middle section 32 of the body 30. In Fig. 2, the jaws 46 are shown in a closed position, the cam 50 having been moved to the closed position by the operating lever 51.The movement of the cam 50 has caused the push rod to be moved towards a chuck and this in turn has forced the jaws further through the aperture. As described above, the jaws 46 and chuck collar 45 are tapered and this causes the jaws to be uged closer together. The vice can be arranged by appropriate adjustment of chuck 33 so that a small gap can be left between the jaws even when closed. Movement of the cam 50 to the open position (shown in dotted line in Fig. 3) against the effect of the compression spring 53 leaves the push rod 54 free to move back under the influence of the biassing of the jaws. Hence the jaws are allowed to retract in the chuck and so open apart.

A knob 60 is provided on the end of the operating lever 51, a part circular cut out 61 (shown in dotted line) being provided so as to enable the body 30 to be locked against rotation in one particular orientation of the latter.

When the stand 30 and cut-out 61 are disengaged, the body 30 can be rotated relative to the support 15 against the friction of the 0 rings 35, 36 in the portion 34. This friction is sufficient to retain the body in the desired orientation under light loads such as those encountered when tying fishing flies.

Claims (9)

1. A vice comprising a chuck for gripping a work piece, said chuck being mounted on a body and said body being mounted on a support, means attached to the body for operating the chuck, and clamping means on said vice separate from said chuck and comprising a pair of clamping members, at least one of which is resiliently biassed towards the other.
2. 2. A vice as claimed in claim 1, wherein said body is rotatable relative to said support such that said chuck can be rotated through any angle to a desired position relative to the support and retained in said position by frictionai engagement between said support and said body.
3. 3. A vice comprising a chuck for gripping a work piece, said chuck being on a body, and said body being mounted on support, said body being rotatable relative to said support such that said chuck can be rotated through any angle to a desired position relative to the support and retained in said position by frictional engagement between said support and said body.
4. 4. A vice as claimed in any preceding claim, wherein said chuck comprises a pair of jaws surrounded by a collar, relative movement of said jaws and collar effecting opening and closing of the jaws.
5. 5. A vice as claimed in any preceding claim, wherein the support is rotatably mounted on a stand which can be fixed to a work surface or bench etc.
6. 6. A vice as claimed in any preceding claim, wherein the body is an elongate tubular member which projects through a hole in the support, the chuck being located at one end of said member.
7. 7. A vice as claimed in claim 1 or 2, wherein the clamping means comprises a disc attached to the support by means of a peg extending axially from the centre of the disc in an axial direction, at least one washer and a compression spring being mounted on said peg so that said spring engages said support and urges said at least one washer against the disc, the or one of the washers and the disc forming the said pair of clamping members.
8. 8. A vice as claimed in claim 1, 2 or 7, wherein said means for operating the chuck is an elongate member mounted within the body for displacement therein and acting on the jaws, said means being actuatabie by a manually operable lever acting on the member via a cam.
9. 9. A vice as claimed in claim 1 or 3, substantially as hereinbefore described with reference to the accompanying drawings.