Patent GB-935987-A (GB)
Title: Improvements in blade clamping apparatus for coating or printing machines
Inventor: FAEBER HARRY WILLIAM
IPC: B41F9/10
Filed: 1962-03-07
Abstract: In apparatus in which a web or sheet is passed <PICT:0935987/III/1> <PICT:0935987/III/2> round a cylinder 2 and is coated by an applying blade 1, the means for clamping the blade in position comprises support members 3 and 6 which define recesses containing inflatable tubes 16 and 17 extending along the length of the blade and a clamp 24 which is secured to the member 3 by screws 25 and partly located in a recess in said member so that its rear portion forms a part of the duct base which is smoothly continuous with the upper surface of the member 3 and its front edge extends over the recess accommodating the tube 17 so that on inflation of said tube it is flattened against the blade which is urged against the underside of the clamp 24. Pressure introduced into the tube 16 deflects the free edge of the blade 1 so as to adjust its co-operation with the cylinder 2.  Fluid pressure is applied to the tubes 16 and 17 through conduits 18 and 19 which contain regulating devices. The duct is provided with side walls 10 and 11 supported by the clamp 24 and the curved forward edges which co-operate with the cylinder are provided with felt pad seals.  Each side wall is provided with a passage 26 having an inlet port 27 and a discharge opening 28 which communicates with the space 29 between the upper surface of the blade and the underside of the forward end of the respective side wall.  A fluid such as air or heavy grease is applied to the inlet port under pressure and it provides a fluid barrier in the space 29 to prevent leakage from the duct.  In the embodiment of Fig. 4 (not shown) the tube 17 is replaced by a similar tube above the blade.  U.S.A. Specification 3,070,066 is referred to.ALSO:<PICT:0935987/IV(a)/1> <PICT:0935987/IV(a)/2> In apparatus in which a web is passed round a cylinder 2 and is coated by an applying blade 1, the means for clamping the blade in position comprises support members 3 and 6 which define recesses containing inflatable tubes 16 and 17 extending along the length of the blade and a clamp 24 which is secured to the member 3 by screws 25 and partly located in a recess in said member so that its rear portion forms a part of the duct base which is smoothly continuous with the upper surface of the member 3 and its front edge extends over the recess accommodating the tube 17 so that on inflation of said tube it is flattened against the blade which is urged against the underside of the clamp 24.  Pressure introduced into the tube 16 deflects the free edge of the blade 1 so as to adjust its co-operation with the cylinder 2.  Fluid pressure is applied to the tubes 16 and 17 through conduits 18 and 19 which contain regulating devices.  The duct is provided with side walls 10 and 11 supported by the clamp 24 and the curved forward edges which co-operate with the cylinder are provided with felt pad seals.  Each side wall is provided with a passage 26 having an inlet port 27 and a discharge opening 28 which communicates with the space 29 between the upper surface of the blade and the underside of the forward end of the respective side wall.  A fluid such as air or heavy grease is applied to the inlet port under pressure and it provides a fluid barrier in the space 29 to prevent leakage from the duct. In the embodiment of Fig. 4 (not shown) the tube 17 is replaced by a similar tube above the blade. U.S.A. Specification 3,070,066 is referred to.