Abstract:
In a method for removing metal from the surface of a workpiece by continuously rubbing the surface with a tool in a friction-inducing manner and in the presence of a friction-enhancing agent (an anti-lubricant) and in which a thin layer of the friction-enhancer must be available at the tool surface, there is provided a tool which carries the friction-enhancing agent in the form of a composition of an abrasive and a rubbery solid siloxane reaction product admixed with a liquid, mobile, anti-lubricant siloxane stably dispersed therewithin, and the use of the tool to excoriate and condition the surface by removing therefrom the oxide film thereon and leaving its place a siloxane film, and a conditioned metal surface having siloxane molecules each individually bonded directly to the metal over a relatively large area of the surface to provide a relatively uniform siloxane layer.
Abstract:
A composition which is effective in the making of a galled joint between two metal members in which there are gaps in the joint prior to and during its formation and which comprises a multiplicity of small metal particles and a gall-enhancing material, for example, a polydimethylsiloxane, and the use of the composition in a method of securing against lateral motion two bodies held in face to face asperity contact, thereby to make a joint between the two bodies, in which method there is inserted into the gap or interface between the two bodies said composition, which on minimal initial lateral relative motion of the two surfaces promotes rapid but controllable "galling" between the two surfaces, this galling binding the surfaces against further such motion.
Abstract:
There is provided a method of forming a high friction joint between a first tubular metal body and a second tubular metal body, the method comprising: selecting a first tubular metal body having a first outer face at a first end portion thereof and selecting a second tubular body having a second inner face at a second end portion thereof, the first and second faces being capable of overlap to enable the first and second tmbs to fit together; treating the first outer face of the first tubular metal body and/or the second inner face of the second tubular metal body by introducing a friction enhancing agent to at least part of one or both thereof; inserting the first end portion of the first tubular metal body inside the second end portion of the second tubular metal body such as to form a low friction joint therebetween; and moving the first end portion of the first tubular body relative to the second end portion of the second tubular body to create rubbing at the first and second faces to activate the friction enhancing agent and to thereby form said high friction joint.
Abstract:
A common way of shaping a metal workpiece by the removal of material therefrom involves rubbing contact, as experienced in a conventional wedge-shaped metal or ceramic cutting tool or in abrasive rubbing using grinding wheels. In conventional cutting and abrading it is commonplace to introduce at the cutter/workpiece interface a material that principally acts as a coolant and as a chip remover but which normally has lubricating properties to minimized rubbing friction. The method of the present invention, in contrast, depends for its function on deliberately causing very high levels of friction between the tool and workpiece; it proposes a method of shaping metal in which the surface of the work piece is "rubbed" by a tool in a friction-inducing manner and in the presence of an anti-lubrication (friction enhancing) agent in a quantity and in a form such that actual friction enhancement occurs. Such an anti-lubricant allows, under some conditions, any part of the tool in rubbing contact with the workpiece surface momentarily to heat and soften the surface, whereupon, due to the system's momentum (as the rubbing action continues), the further friction caused by the tool shears off the softened surface material under and forward of the contact with the tool.
Abstract:
There is provided a friction tool for use in a cosmetic method for the treatment of mammalian skin. The tool comprises a body (60) defining a support having a planar support face; a friction pad (65) provided to said support face, said friction pad defining a friction face. The friction pad comprises a lofty non-woven fibre material or both a compressible foam layer and a layer of friction-enhancing material defining said friction face. A cosmetic method, which can be performed using the tool is also described.
Abstract:
It is already common in many devices like spanners or pipe wrenches for the pressure between the gripping faces and gripped faces to be related to the torsional load that is applied to turn the gripped object. In these apparatus the grip can be made to relax automatically as the load is removed. The invention relates to improvements in such devices, and to novel designs of mechanical coupling devices that utilise this basic idea. More specifically, the invention firstly proposes a method of improving the performance of an object-gripping tool of the cam-operated gripper-element type, in which method there is applied to the gripper surface a friction-enhancing chemical. And it secondly proposes object-coupling apparatus which includes a body-mounted object-gripper together with a gripper-moving cam device having a cam member that is forced to bear against both the gripper and the body so as to urge the gripper into gripping contact with the object, the resulting friction between the body, cam member and gripper being enhanced by a prior chemical treatment, and so being sufficient to prevent the cam member reversing and the gripper releasing the object so long as force is maintained.
Abstract:
There is provided a method of forming a coupling between a first body (71, 72) and a third body (76), which comprises selecting a first body having a first body layer and a third body having a third body layer; sandwiching a second body layer of a deformable body (74) between said first body layer and said third body layer; forming a first coupling between the third body layer and the second body layer; and forming a second coupling between the first body layer and the second body layer by providing a friction-enhancing fluid medium between the first body layer and the second body layer and without introducing relative sliding there-between pressing the second body layer against the first body layer such as to deform the second body layer into cold pressure welding contact with the first body layer.
Abstract:
A friction tool for use in a cosmetic method for the treatment of mammalian skin, the tool comprising a body defining a support having a planar support face; a resiliently deformable friction pad provided to the support face, the friction pad defining a friction face, the friction pad further comprising a net-like layer provided at said friction face such as integrally thereto, and a cosmetic method which can be performed using the friction tool.
Abstract:
There is provided a rubbing tool that stores and dispenses impregnated pads (103) from a sealed cavity therein. Each pad with new rubbing surface (106) thereon is transferred onto an outside surface (102) of the tubular storage holder for use after which the pad is discarded. Uses for the tools include industrial surface preparation, surface cleaning in home care and car care and the application of cosmetics and personal care treatments.
Abstract:
There is described a method of securing against lateral motion two bodies held in face to face asperity contact to make a joint between the two bodies. Inserted into the interface between the two bodes is a material known as a galling agent, gall promoter, gall enhancer or anti-lubricant. This material is a composition of a crosslinked siloxane having dispersed therein a gall promoting silicone. The crosslinked siloxane is formed, for instance, from the reaction between an amino siloxane and a dicarboxylic anhydride siloxane.