Abstract: A pill cutter is provided and has a base, two holders, a driving assembly, and a lid. The two holders are movably mounted on the base and configured to clamp one or multiple pills at the same time. The driving assembly is connected to the two holders and is capable of driving the two holders to move. The driving assembly comprises two wheels and the two wheels are connected to the two holders. The lid is tiltably mounted on the base, and a blade is mounted on the lid and configured to split the pill(s) at the same time. When the two wheels are rotated, the two holders are capable of moving toward each other or away from each other. With the holders driven by the wheels, multiple pills can be clamped by the holders and cut at once, which saves a lot of time.

Abstract: Device, method and kit, the device comprising a body and a sliding member. The body comprises a sliding channel, a first reference-clipping-surface and a filler-resting-surface. The first reference-clipping-surface and filler-resting-surface are coplanar. The body comprises a filler-clamp. The sliding member slides perpendicularly to the first reference-clipping-surface. The sliding member comprises a second reference-clipping-surface parallel and non-coplanar to the first reference-clipping-surface, a filler-clipping-surface perpendicular to the filler-resting-surface and a reference-clamp. The first and second reference-clipping-surfaces are configured to releasably secure the device onto a reference board when the sliding member slides upon clamping of the reference-clamp and the filler-clipping-surface; and the filler-clamp are configured to releasably secure a filler board onto the filler-resting-surface upon clamping of the filler-clamp.

Abstract: A mechanical structure for telescopic rotating by a helical elastic part is disclosed, including a main body. The main body includes an internal cavity and a locking part for fixing one end of the internal cavity, the locking part is externally configured with a bottom cover, and a rotating sleeve is configured at an entrance of the other end of the internal cavity. The mechanical structure can solve problems due to rotary telescopic structures in existing technologies adopt more parts and complicated structures.

Abstract: A grip assembly includes a first grip arm, a base member integrally formed with the first grip arm, a second grip arm movably coupled to and independently positionable relative to the first grip arm and a fastener securing the second grip arm relative to the first grip arm.

Abstract: An ultrasonic instrument includes a shaft assembly and an end effector having an ultrasonic blade, a clamp arm, and a clamp pad. The clamp arm is pivotally coupled with the shaft assembly. The clamp pad is configured to removably couple with the clamp arm while the clamp arm is pivotally coupled to the shaft assembly. The clamp arm includes a mortise and a pair of support gussets. The clamp pad includes a tenon and a pair of resilient projections where the tenon engages the mortise of the clamp arm and the projections contact the support gussets of the clamp arm.

Abstract: A damping apparatus includes a damping unit 30 composed of a plurality of damping plates 36 having plasticity, a holding member 31 holding at least one ends of the damping plates 36 in a manner to allow deflection of the damping plates 36 with the damping plates 36 laminated together, and a contact member 33 provided at a position spaced from a holding position of the holding member 31, and attached to an outermost one of the damping plates 36, or extending through and held by the damping plates 36 in such a manner that it can be brought into contact with the outermost one of the damping plates 36 and can be moved in an extending direction thereof. The damping unit 30 is supported by a support mechanism 2 in such a manner that the contact member 33 can be brought into contact with an object W.

Abstract: A clamp has a base and a first selectively compliant component carried by the base, the first selectively compliant component being selectively operable between a substantially compliant state and a substantially rigid state.

Abstract: An adapter (10) for a magnetic clamp (12) includes a body (14) having an element engaging portion (16) for engaging an element (18) to be supported in position by the magnetic clamp (12). A height compensation mechanism (20) is carried by the body (14) For compensating for height variations between the clamp (12) and the element (18).

Abstract: A point-welding clamp structure for side by side tightly clamping and locating different plate-shaped metal pieces in their true relative positions so as to facilitate the point-welding operation. The point-welding clamp structure includes a body section and a base section for clamping the different metal pieces. A second adjustment section is disposed on the body section and a third adjustment section is disposed on the base section. By means of operating the second and third adjustment sections, the metal pieces with different thickness can be securely clamped and located by the point-welding clamp structure.

Abstract: A method and system for centering and aligning manufactured parts of various sizes at an optical measurement station are provided. The system includes apparatus having a central axis substantially parallel to the measurement axis and including a plurality of members having open and closed positions. The members have holding faces which are substantially equidistant from the central axis during movement between the open and closed positions. At least one of the members applies a force on an exterior side surface of a part disposed between the holding faces during movement between the positions to reposition the part at the station. The repositioned part is centered and aligned with respect to the measurement axis at the station. The holding faces releasably hold the repositioned part in a holding position between the open and closed positions at the station.

Abstract: A surgical retractor including a slab-shaped member having a first edge and a second opposing edge, wherein a deformable elongate member is provided affixed to said first edge, said elongate member comprising an external wall defining an internal chamber, wherein the external wall is configured to be compressible and moldable to a surface, in particular, a human tissue surface within a surgical incision. A curved flexural handle may be provided attached to the second edge.

Abstract: Accessory (1) for a holding device, such as a vise, a clamp or the like intended for use in conjunction with the temporary attachment of at least one object with the aid of the holding device, in which the accessory (1) includes a body (2) having at least one groove (3) and at least one attachment device (4). The invention is distinguished by the groove (3) having at least one arch-shaped contact surface (5).

Abstract: Accessory (1) for a holding device, such as a vise, a clamp or the like intended for use in conjunction with the temporary attachment of at least one object with the aid of the holding device, in which the accessory (1) consists of a body (2) equipped with at least one groove (3) and at least one attachment device (4). The invention is distinguished by the groove (3) consisting of at least one arch-shaped contact surface (5).

Abstract: An apparatus for cutting a corrugated metal sheet is disclosed. The apparatus includes a table, a clamp assembly, and a cutting tool. The clamp assembly has a lower frame and an upper frame. A lower vibration absorbing pad is supported by the lower frame, and an upper vibration absorbing pad is secured to the upper frame such that the upper vibration absorbing pad faces the lower vibration absorbing pad. In an open position the lower and upper vibration absorbing pads are separated to permit the corrugated sheet metal to be positioned therebetween and in a closed position the corrugated metal sheet is clamped between the lower and upper vibration absorbing pads with at least one of the lower and upper vibration absorbing pads substantially conforming to the contour of an adjacent surface of the corrugated metal sheet.

Abstract: A center clamp used with a machining tool having an annular edge has a C-shaped body having an inner end inside the edge and an outer end outside the edge and spaced from it along a clamp axis. A push rod extends along the axis through the outer body end. A rotary joint centered on the axis has an inner part on the inner body end and an outer part rotatable on the inner part about the axis. An axial actuator relatively axially shifts the body and the push rod and thereby clamps a workpiece between an end face of the rod and the outer part of the joint. An angular actuator pivots the push rod about the axis and thereby, when the workpiece is clamped between the rod and the joint, pivots the workpiece about the axis.

Abstract: A gripper system for a machine that processes printing material sheets has a gripper with a first clamping surface and a gripper pad, for cooperating with the gripper, with a second clamping surface. One of the two clamping surfaces is formed with a surface relief. The clamping surface which has the surface relief is placed in such a way that, when a narrow printing material sheet is gripped, the clamping surface is covered by the sheet only within a subregion of the clamping surface and, when it grips a broad printing material sheet, it is covered by the latter beyond the subregion. The surface relief is structured differently within the subregion than outside the subregion, in that it is provided within the subregion with an antideformation structure which protects the narrow printing material sheet from excessive clamping deformation.

Abstract: A fixturing device for holding a workpiece for processing by an induction hardening machine includes a first subassembly constructed and arranged to be attached to an induction coil subassembly which is movable into and out of position around the workpiece. A second subassembly, virtually identical in construction to the first subassembly, is attached to the induction coil assembly and the two subassemblies are spaced apart so as to face one another and so as to define therebetween a workpiece-receiving region. Each subassembly includes an L-shaped bracket with one leg configured for attachment to the induction coil assembly and the other leg configured with connecting rods for attachment to a holding block. There are three connecting rods, two in the form of cylindrical pins, and one, the center connecting rod, being externally threaded for connecting a holding block to the L-shaped bracket. The two cylindrical pins receive coil springs so as to spring bias the holding block.

Abstract: An apparatus for supporting a thermoformable material along its peripheral edges includes a frame forming a channel therealong for receiving the peripheral edges of the thermoformable material. The channel has an opening formed between first and second edges of the frame. At least one retaining arm is pivotally connected to the frame along the first edge and includes a distal end. The retaining arm is pivotable between an open position to allow insertion of the peripheral edge of the thermoformable material into the channel and a closed position for clamping the thermoformable material between the distal end and the second edge.

Abstract: The present invention provides a bar clamp made of lightweight parallel metal bars, e.g., aluminum, having movable or adjustable contacting attachment bodies which allow the clamp to be used for various applications. The bar clamp of the present invention is equipped with a measurement gauge for accurate attachment of the contacting attachment bodies to the workpiece. The parallel bars are separated and secured to each other by spacers and the bars have tracks along the inner faces of their entire length along which the attachment bodies move. One embodiment of the present invention discloses how the attachment bodies can be replaced by large frames having multiple attachment bodies mounted thereon for holding the workpiece in a vertical or horizontal position. Also, various designs of the attachment bodies which are interchangeable are provided.

Abstract: A clamp is provided that has a pair of clamp bodies which each have an inner surface. The inner surfaces of each clamp body are oriented to face one another in a spaced parallel relationship. A pair of parallel scissors linkages are coupled to the device that operate to move the clamp bodies in parallel relation relative to one another. Each scissors linkage extends from one side surface of one clamp body to a corresponding side surface of the other clamp body. A threaded rod is coupled to the pair of scissors linkages between the clamp bodies and is oriented with its axis of rotation parallel to the inner surfaces of the clamp bodies. The threaded rod is operable to move the clamp bodies either towards one another or away from one another in spaced parallel relation by rotation of the rod. By operation of the rod, the device may be used as either a clamping device or an expansion device.

Abstract: A non-surface marring work piece lathe mate pad which is interposed and held between the work piece and a lathe's chuck jaws. Each lathe mate has two grooved surfaces extending around three of its sides and flattened front and back surfaces which engage the work piece and lathe's chuck jaw. Disposed within these grooves are two continuous expandable strap members which extend around the lathe mates and the chuck jaws to retain them in place. These end grooves in each lathe mate prevent slipping of the expansion members with respect to rotatable work piece holding chuck jaws.

Abstract: A work piece stock holding member that can be adjusted by a single handle or adjustment nut usable with a conventional channeled toggle clamp fixed to a working surface. The holding member has an internally and externally threaded collar having a single piece joined clamp engaging unitary washer. The collar's internal threads are received by the external threads of an inserted supporting bolt. An upper end adjustment handle is fixed to the supporting bolt to rotate in unison with the bolt. The vertical adjustment of the holding member relative to the working piece is performed by rotating this bolt's upper handle. On one side of the clamp's channel is another separate holed washer which bears against one side of the clamp, moves on its hole pass the central bolt and bears against an adjustment nut mount on the collar's external upper threads.

Abstract: A pair of clamp pliers comprises an upper clip plate, a lower clip plate, a torsion spring disposed between the upper clip plate and the lower clip plate, a pivot pin passing through the torsion spring to fasten the upper clip plate and the lower clip plate together, a first recess hole formed on a front portion of the upper clip plate to receive a first compression spring and an upper mount, and a second recess hole formed on a front portion of the lower clip plate to receive a second compression spring and a lower mount.

Abstract: A surgical needle holder has the facing surfaces of its jaws lined with memory alloy which is soft enough to distort around a needle when gripped between the jaws. A better grip on the needle is thus achieved. The surfaces of the inserts may be profiled with ribs to allow the alloy to be subject to a greater pressure per square centimeter locally and so more readily deformed.

Abstract: A workpiece holder, particularly adapted for holding eyeglasses lenses (L), comprises a support (12) on which there are arranged two clamps (14, 17, 117) for clamping each a portion of a lense. Each clamp defines an axis (A) which is substantially perpendicular to the portion of lense clamped thereby. Each clamp is positionable and lockable with said axis (A) oriented in any direction at the interior of an ideal cone (A1 - A2) having a vertex through which the said axis (A) is passing. Positioning means (3, 4, 40) are provided for displacing the said support (12) along a horizontal plane with respect to a fixed tool (28).

Abstract: The invention is drawn to fixture stock for producing holding devices. The fixture stock is made from an elongated base plate having side rails along two parallel opposed longitudinal edges to define an intermediate, longitudinally extending space therebetween. An elongated jaw plate is disposed above the base plate and between the side rails and an elongated pad of resilient material is sandwiched between the base and jaw plates, which in turn are bonded to opposite sides of the pad respectively, whereby the base and jaw plates are resiliently connected for slight relative movement. The side rafts include a plurality of anchoring holes perpendicular to the base plate and extending through the base plate, and the side rails also include a plurality of thrusting holes parallel to the base plate and extending through the side rails toward the jaw plates. Preferably the jaw plate is split into a pair of separate portions, separated from each other by a filler strip.

Abstract: A precision holder for hand-held optical scanning digitization devices is provided in which varying thicknesses of source documents may be securely held to a flat table by a support which also functions as a guide along which the scanning device may be accurately and repeatedly moved. In one embodiment, the original document is held by a guide held by a double hinge arrangement and secured by springs pulling toward the table. In another embodiment, the guide is held to the table by springs in a frame and track assembly much like a guillotine. For more accurate use of the scanning device a scanner alignment tray is provided for attachment to allow precise use of scanning devices which do not have a suitable square side to fit against the guide of the described scanning table.

Abstract: An attachment is adapted for mounting to a jaw of a vise for use with clamping irregularly shaped workpieces. The attachment comprises a pouch of pellets which are variably displaceable to conform to the surface contour of the workpiece. The pouch is mounted against a plate which is adapted for mounting to a jaw of a vise.

Abstract: The jaws of a clamp are provided with elastomeric linings, and gripping elements of high hardness in the form of pins or particles are embedded in the linings. The gripping elements have tips which are directed away from the respective jaws.

Abstract: A soft jaw attachment to machine vises having precision ways and flat vise jaw faces with widely spaced fastener openings through said vice jaw faces, the soft jaw being an elongated bar of resilient material having a flat face to interface with the vice jaw face, an element of the fastener means being of T-shape engaged in a complementary channel in the soft jaw, the soft jaw being arcuately prestressed and drawn tightly into flat contiguous interengagement with the jaw face; and an embodiment wherein the fastener element is an elongated and resilient prestressed bar; either or both the soft jaw or the fastener element being prestressed: tightness of the soft jaw to the vice jaw being ensured.

Abstract: The present invention relates in one aspect to a compressible and/or deformable microtome object holder. The object holder may be in the same or similar shape as a wide variety of previous object holders, comprising a specimen plate having a textured or grooved surface and a shank structure. The holder may further comprise a ball element on the opposite end of the shank structure from the plate. In this instance, the ball element serves as the means of mounting the holder to the microtome. At least the grippable portion of the holder which is held by the microtome is formed of a compressible and/or deformable substance. Preferably, the holder is unitarily formed entirely of a compressible and/or deformable substance. The invention allows an object holder to be held more securely and to be molded economically.

Abstract: A press for welding magnetic yokes comprises first and second frames movable toward and away from each other, on which there are defined respective confronting and parallel pressure surfaces (12, 35), a motive means (50) acting between the frames (11, 30) to produce the aforesaid movements, and a presser (14, 36) associated with each of the pressure surfaces (12, 35) to define a saddle-piece for receiving the yoke (3). Between at least one of the pressers (14, 36) and its respective pressure surface (12, 35) there intervening an elastically deformable pillow (39) functioning as an adjuster of the deformation under load undergone by the corresponding pressure surface (12, 35). This pillow is composed of an elastic material which has a behavior under load, within a predetermined range of specific loads, that approaches a hydrostatic behavior, that is, such that for a given increase in the deformation there corresponds a proportionally low pressure increase.

Abstract: A scissors sharpening apparatus includes a motor driven sharpening member having an abrasive surface. A magnetic guide is arranged to position the scissors blade at a fixed angle relative to the principle plane of the abrasive surface in such a manner that the magnet of the guide has the axis of its poles oriented nominally perpendicular to the flat face of the blade and nominally parallel to the principle plane of the abrasive surface.

Abstract: A novel magnetic workpiece clamping block carrying resilient magnetized plastic surfacing over its complete clamp-engaging surface and of dimensions larger than the clamp to enable ready adjustment of different block areas held to the clamp, all without separation therebetween; and increased magnetic holding to the clamp during clamping with and cushioning of the workpiece on the other surface of the block during clamping.

Abstract: The invention relates to a clamping device for the clamping of at least one piece of tooling, for instance an upper tooling or a press, which device comprises:two clamping jaws moveable towards and away from one another, between which the tooling can be clamped,pressure means, for instance at least one hydraulic cylinder for pressing the clamping jaws towards one another with force at energizing thereof, andat least one locking element present between the clamping jaws for co-action with an edge present on the tooling,such that the tooling in the absence of energizing of the pressure means can be pushed with at least one edge over the locking element, hook over the edge, and thus prevents the tool from falling,and is characterized in thata resilient strip, which is attached between the clamping jaws to one clamping jaw and which as a result of its own resilience lies in untensioned state at a distance from a pressure surface of this clamping jaw, whereby in the absence of energizing of the pressure means, the

Abstract: In order that bar-shaped cutters can be ground as accurately as possible, it is essential that the bar-shaped cutters are clamped as close as possible to the surfaces which are to be ground. For this purpose, each bar-shaped cutter is pressed against two stop faces or surfaces by means of two claws of a clamping lever, and the one claw which is closer to the surface to be ground is structured to be more elastic or resilient than the other claw. Particularly, the claw closer to the surface which is to be ground is more intensely pressed or forced against the bar-shaped cutter than the other claw.

Abstract: An apparatus and method are disclosed for holding a generally cylindrical workpiece for honing or otherwise machining an internal bore. The workpiece is held by a gripping surface over most of the innermost turn of a spirally wound spring and coil. The workpiece is grasped circumferentially over its outer surface without excess contact pressure at any particular point. A tendency of the machining operation to rotate the workpiece serves to secure the workpiece more tightly in position by tightening the outer turns of the spring band coil. A rotatable tensioning member acts under the influence of a biasing spring to decrease the diameter of the innermost turn of the spring band coil to bring the gripping surface into contact with the workpiece. A method for adapting the work-holding apparatus to smaller or irregularly shaped workpieces consists of molding an annular piece around the workpiece.

Abstract: A retainer for releasably securing devices or objects of nonuniform configuration. Clamping action is supplied by a pair of resilient synthetic sponges mounted between a pair of supports. The supports can be either hinged relative to each other or in fixed spatial relationship. A mounting means is provided for mounting the retainer to a third object such as a pole, wrist, surgical tray, drape, wall, or the like, and can include an adhesive surface or a flexible or even elastic strap.

Abstract: A tool for loosening a seized ball joint from a tie rod in a motor vehicle and consists of a shank having a stationary jaw with a wedged shaped seat so that the seized ball joint can sit in the wedged shaped seat. A movable jaw is pivotly secured to the shank while a puller bolt is transversely threaded through the shank causing the moveable jaw to pivot to press against end of the seized ball joint. A handle with a removable handle extension having a support portion is threadably attached to the shank so that a hammer can hit against the support portion to loosen the seized ball joint from the tie rod.

Abstract: A portable gun cas holder comprised of a pair of gun supports mounted within a carrying case wherein one of the gun supports is equipped with a clamping assembly which holds the gun in place wherein the clamping assembly may be adjusted to accommodate the individual characteristics of a particular gun and furthermore where the gun supports may be adjusted in height and further may be folded within the carrying case to allow for easy transportation of the invention.

Abstract: A clamp to axially hold small coaxial cable (10) of a type having a soft dielectric core (16) includes a rigid element (30) having a groove (32) to receive the cable laid therein and an elastomeric element (4) having a projection (42) shaped to fit partially around the cable and along the length thereof and be compressed to preclude movement of said cable axially while minimizing cable core deformation to allow the cable to be worked upon relative to stripping and termination. A method using clamps fore and aft of stripping blades (50-52) clamped on the cable embraces holding the cable and the blades stationary while moving one clamp (30M-42M) axially to remove the cable sheath and foil.

Abstract: An adjustable box wrench comprising a box body, an elastic steel beam, and adjustment fragment and a box arm. The adjustment fragment is adjustable inside a hole in the box body to form various size hexagonal holes. Teeth on opposite side of the hole and a beam with a slot permit adjustment of the position of the fragment to adjust hole size.

Abstract: A wrapping machine wherein article units are wrapped by a shrinkable web to form a package. The machine includes a conveyor which includes an upper article supporting run. The conveyor has regularly spaced openings and associated with the rear of each opening is a web pulling bar. Article units are fed to the conveyor run in timed relation to conveyor movement and a series of retarder bars, moving at a slower rate, pull the web in front of each article unit to be wrapped with the article unit then bearing against the retarder bar and being slowed to the speed of the retarder bar with the conveyor moving therebeneath. A clamp bar moves down behind each article unit, draws the web down behind the article unit and then clamps the web to the article unit. In advance of this, and before the clamp bar engages the article unit, web drawing means engages the web between two adjacent article units and draws the same down into the associated conveyor opening and engages the web with the article pulling means.

Abstract: A vice jaw support apparatus provides a novel support system for securement of splined and threaded work pieces within vice grippers or jaws. In a preferred form, the apparatus is formed of a polyethylene or other similar resilient material. In a preferred form, the apparatus defines a pair of plastic bodies which are interconnected by integral web portions joining the two bodies on opposite sides. The web portions are disposed for deforming outwardly when the two body portions are moved towards each other within the vice jaws. Each body contains a flange portion whereby the apparatus may be supported on the upper surfaces of associated vice jaws.

Abstract: Top jaw assemblies combined with a chuck. Each of these top jaw assemblies comprises a body having a base projecting radially inwardly when mounted to the chuck, a cylindrical wall in the body which with the base provides a cutout portion and in which a workable rotatable workpiece gripping member or "slug" is mounted and secured to the base. The slug's periphery or annular wall conforms to and engages the cylindrical wall and includes an opening having a counterbored hole in which a screw mounts and extends below the slug to thread to a threaded aperture in the base. The slugs are machinable to provide different gripping surfaces contoured to the configuration of different workpieces, and are rotatable to provide the necessary reset position for such gripping surfaces in relation to the different sized workpieces. The base can be slightly inclined so as to force the slug's diameter against the matching radius of the cylindrical wall when the slug is torqued to the base.

Abstract: A workholding vise which comprises an elongated bottom plate and an elongated top plate. At least three legs are provided with structure for fixing the telescopic sections thereof in mutually fixed relationship. The apparatus includes structure for mounting the three legs at substantially equal distances from a common geometric axis of the structure for mounting. This structure for mounting allows pivotal motion with respect to the bottom plate. A first elongated jaw is mounted on the bottom plate. The first elongated jaw includes and elongated V-shaped open trough extending in the general direction of the elongation of the bottom plate and the first elongated jaw. The apparatus also includes a second elongated jaw also having an elongated V-shaped open trough in it. The apparatus includes structure for clamping the first and second jaws together.

Abstract: An apparatus for temporarily supporting a gutter during the installation thereof is described comprising a vertically disposed inner frame member adapted to be movably secured to the fascia board positioned adjacent the edge of the roof. A horizontally extending bottom frame member extends outwardly from the lower end of the inner frame member. An outer frame member extends upwardly and outwardly from the outer end of the bottom frame member. A horizontally disposed support extends between the inner and outer frame members above the bottom frame member adapted to support the bottom of the gutter. A plurality of the apparatuses are mounted on the fascia board in a spaced-apart relationship. The gutter is then positioned on the apparatuses and then nailed to the fascia board in conventional fashion. After the gutter has been nailed to the fascia board, the apparatuses are removed.

Abstract: A portable gun case holder comprised of a pair of gun supports mounted within a carrying case wherein one of the gun supports is equipped with a clamping assembly which holds the gun in place wherein the clamping assembly may be adjusted to accommodate the individual characteristics of a particular gun and furthermore where the gun supports may be folded within the carrying case to allow for easy transportation of the invention.

Abstract: An assembly comprising a board 1 and a mechanism 17 for clamping a marginal portion of the board adjacent an edge between two opposed substantially flat parallel walls 7a. The mechanism 17 is mounted on a major surface 19 of the board 1 and includes a spring strip 21 extending longitudinally along the mechanism, and having corrugations transverse to its length. An elongate cam 27 extends along the length of the strip 21, overlying the strip, and being supported for rotation about its longitudinal axis. Rotation of the cam 27 causes expansion of the mechanism 17 in a direction normal to the surface 19, limitation of the expansion by the walls 7a leading to compression of the corrugations in the strip 21.

Abstract: A tire building machine utilizes a ply-down and bead set assembly in which an array of axially projecting spring fingers are used. The fingers are secured between two nested rings which are constructed to interfit with each other and with each finger so that each finger may be inserted or removed without affecting adjacent fingers. One of the rings has projections interfitting with the fingers in their normal position and one of the rings may be locally deformable to assist in the insertion and removal of the fingers.