GB1080885A - Mattress border eyeletting machine - Google Patents

Abstract

1,080,885. Eyeletting. UNITED MATTRESS MACHINERY CO. March 3, 1966 [March 3, 1965], No. 9398/66. Heading B3U. A machine for inserting four eyelets simultaneously into a mattress border strip comprises four punches 166 and dies 170 for perforating the strip, four eyelet setting punches 134 and dies 148 and four detector plungers 178 which, in the absence of an eyelet in the appropriate position, pass through the strip and actuate a micro-switch 192 which stops the machine. The border strip comprises three components 24, 26, 28, Fig. 1, which are drawn from a source of supply over detector plates 30, 32, 34. Associated with each detector plate is a feeler which, in the absence of one of the components, contacts the plate and completes an electric circuit which stops the machine. The strip is drawn through the machine by a pair of feed-in rollers 40, 42 and a pair of feed-out rollers 44, 46. An electric motor drives a cam-shaft of the machine and a cam-follower operates a linkage mechanism which is connected to both pairs of feed-rollers, through over-running clutches. There is a permanently applied friction brake on the feed-in rolls to prevent over-run, so that the inertia of the feed-out rolls produces tension in the strip. Eyelets are fed to the setting tools through raceways 156 and are released one at a time by slotted rods 160 mounted on rocker arms 164. There is a resiliently mounted guide plunger 144 within each setting punch 134. The detector plungers 178 are resiliently mounted in holders 179 which are connected to a reciprocable support 138 which also carries the setting tools and perforating punches. The support 138 is reciprocated by a toggle mechanism actuated by a cam driven by sprocket and chain gear from the main cam-shaft.