EP0272122A2

EP0272122A2 - Improvement in the vice (6)

Info

Publication number: EP0272122A2
Application number: EP87311129A
Authority: EP
Inventors: Tai-Her Yang
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-12-17
Filing date: 1987-12-17
Publication date: 1988-06-22
Also published as: EP0272122A3

Abstract

The further end of the body (2) of a vice is provided with toothed concave surfaces (16,18), and the slide (6) has an aperture (26) with a toothed concave edge (28) by means of which a pipe or rod may be gripped vertically. The vice may be rotatable so as to project over the edge of a work bench to allow long objects to be gripped.

The guide screw (10) preferably has a substantial collar or nut (46) retaining it within the slide and secured to the guide screw by means of a cotterpin or set screw (48), and the jaws may be made reversible and may be designed to grip objects internally.

Description

The invention relates to vices, and an object of the invention is to provide an improved vice particularly suitable for gripping elongated objects such as lengths of tube or rod.
The invention will be described with reference to the accompanying drawings, in which:

Fig. 1 is a perspective view of a vice according to the invention.
Fig. 2 is an elevation in part section of the vice of Fig. 1 and
Fig. 3 shows the vice is use for clamping a hollow object internally.

Referring first to Fig. 1, the vice comprises a vice body 2 which carries a fixed jaw 4. The body is hollow, and within it slides a slide 6 carrying the movable jaw which is moved towards or away from the fixed jaw by moving the slide by means of a guide screw 10. This guide screw is rotatably mounted at one end in the slide and engages a nut 12 (seen in the sectional view of Fig 2) mounted in, or forming part of, the vice body.
The further end of the vice body is of generally concave form at both its upper and lower portions 16,18, and these are provided with gripping teeth 20,22.
The end of the slide beyond the free end of the guide screw is provided with an aperture 26 the further edge of which, 28, facing towards the end of the guide screw is also of concave form and is also provided with teeth 30, this toothed edge being so disposed as to co-operate with the sets of teeth 20,22, in such a way that a pipe or rod inserted in the aperture can be clamped between the body and slide by turning the guide screw.
The base portion of the body 32 is of circular form, and is rotatably mounted on a circular seating 34 to which it can be clamped in any desired angular orientation by means of a clamping screw 36. In normal use the vice will be mounted at the edge of a work bench and the rotatable base allows the vice to be turned so that the end portions of the body and slide overhang the edge of the bench and enable a long pipe or rod to be clamped clear of the bench in the vertical position.
As shown in Fig 2, an additional pair of toothed gripping jaws 40,42, for holding a pipe or rod horizontally, may be provided in addition to the normal vice jaws 4,8.
It will be appreciated that the rotation of the guide screw for clamping a pipe or rod in the vertical position is in the opposite direction to that required for clamping an object between the normal vice jaws. It is thus desirable that the abutment means on the guide screw which bears against the slide when the jaws are opened should be of robust construction. In a preferred version of the invention this is provided by a collar 46 preferably of substantial cross-section, on the guide screw, held in position by a cotterpin 48. In a alternative contruction a threaded nut may be placed on the guide screw instead of the collar 46, be screwed into position,and be held there,again, by a cotterpin or by a set screw.
The fact that vice is constructed to be particularly robust in resisting the forces exerted as the jaws are opened makes it especially suitable for clamping hollow objects by gripping their internal surfaces, as is illustrated by way of example in Fig. 3. For this purpose the jaws of the vice may be made rotatable or interchangeable,and, in particular, may be made of any of the various constructions disclosed in my US Patent No. 2881645. Referring back to Fig. 1, various possibilities for the forms of the jaws are indicated in the diagramatic sketches numbered 1A to 1G.

Claims

1. A vice comprising a body (2) carrying a fixed jaw (4), slide (6) movable within the body and carrying a movable jaw (8), a guide screw (10) mounted at one end in the slide and engaging a nut 12 mounted on or forming part of the body for relative movement of the jaws, characterized in that the end of the body beyond the free end of the guide screw is formed with corresponding upper and lower concave toothed surfaces (16,18), and the slide has an aperture (26) formed with a toothed edge (28) facing the guide screw and arranged to co-operate with the toothed ends of the body in such a way that a pipe or rod inserted in the aperture can be clamped between the body and slide by turning the guide screw.

2. A vice according to claim 1 rotatably mounted on a seating (34)and provided with clamping means (36).

3. A vice according to claim 1 or claim 2 in which the guide screw is retained within the slide by means of a nut on collar (46)secured to the guide screw by means of a cotterpin or set screw (48).

4. A vice according to any preceding claim in which the fixed and movable jaws are so designed as to be capable of gripping a hollow or recessed object internally.