Abstract: For partially plating work surfaces, a tubular shield member is set around a work which is connected to a cathode, in face to face and in predetermined small gap relation with a non-plating surface or surfaces of a work. In a plating bath, an anode is located on the outer side of the shield member to cover the non-plating surface from the anode. Upon conducting current between the anode and cathode, a metallic coating is deposited specifically and selectively on a work surface or surfaces which are not covered by the shield member.

Abstract: For partially plating work surfaces, a tubular shield member is set around a work which is connected to a cathode, in face to face and in predetermined small gap relation with a non-plating surface or surfaces of a work. In a plating bath, an anode is located on the outer side of the shield member to cover the non-plating surface from the anode. Upon conducting current between the anode and cathode, a metallic coating is deposited specifically and selectively on a work surface or surfaces which are not covered by the shield member.

Abstract: In a screw holder in which bands of synthetic resin are disposed on one side of a series of screws out of alignment with the line connecting the center of each screw to stabilize the feed of the screws by the feed pawl of a screwdriver, the screws are driven in the right position regardless of the presence of the bands. A series of screws having an enlarged head are held between a pair of bands of synthetic resin. While a substantially straight main band having a larger cross-sectional area than a secondary band maintains the strength of the screw holder, a secondary band is allowed to band according to the profile of the screw held therebetween. The outer surface of the main band is flat, whereas an intermediate part between adjoining screws where the two bands meet is flattened without forming a rib-like projection therein. Each screw is caused to bite in the main band to reduce the thickness of its bitten part.

Abstract: In a screw holder in which bands of synthetic resin are disposed on one side of a series of screws out of alignment with the line connecting the center of each screw to stabilize the feed of the screws by the feed pawl of a screwdriver, the screws are driven in the right position regardless of the presence of the bands. A series of screws having an enlarged head are held between a pair of bands of synthetic resin. While a substantially straight main band having a larger cross-sectional area than a secondary band maintains the strength of the screw holder, a secondary band is allowed to bend according to the profile of the screw held therebetween. The outer surface of the main band is flat, whereas an intermediate part between adjoining screws where the two bands meet is flattened without forming a rib-like projection therein. Each screw is caused to bite in the main band to reduce the thickness of its bitten part.