Patent GB-411189-A (GB)
Title: Improvements in or connected with means for securing labels, tabs, strip-material and the like to boxes and other objects
IPC: B65C1/02
Filed: 1932-12-15
Abstract: 411,189. Labelling machines. METHVEN, M. D., The Croft, Penshurst Gardens, Edgware, Middlesex, ROBBINS, E. L. G., 44, Leyland Road, Lee, and TOKALON, Ltd., Chase Road, Willesden, both in London. Dec. 15, 1932, No. 35614. [Class 73.] A machine for securing labels, tabs, strip material, or the like to boxes and other articles, particularly for applying transparent strips over inspection apertures in boxes, comprises means for feeding strip material to the article to which it is to be applied, means for applying adhesive to the strip at spaced points located near the marginal edges of the strip, means for severing a length from the strip, and means for pressing the severed length on to the article, the feeding, adhesive-applying, severing, and pressing means all being operated from a common driving shaft so that during one revolution of the shaft, the strip is fed by the desired length, gum or the like applied to the strip, a portion of the strip severed, and such portion pressed on the article. The strip 3, Fig. 1, is passed from a spool between guide rollers 4 and then between guide plates 5 adapted to engage only the extreme marginal edges of the strip, and over an adjustable bracket 6 adapted to support a box or the like 7. The strip 3 is fed by means of the forked end 8 of a pivoted lever 9, Fig. 4, which is rocked by means of a sidefaced cam 12 mounted on the common driving shaft 13, the end 8 carrying contact pins 15, 16, which engage the centre portion of the strip, the upper pin 15 being adjustable in position, and the lower pin 16 being reciprocated vertically by means of a pivoted lever 17 engaging with a cam 20 keyed to the main driving shaft 13, the cam 20 being so timed that the pin 16 is moved upwardly at the commencement of each feeding stroke, and is retracted upon completion of the feeding stroke. The means for applying adhesive to the strip 3 consist of a pivoted lever 24, Fig. 5, which carries at one end four gum-applying points 25, and is caused to rock by means of a cam 27 keyed to the main driving shaft 13, to immerse the gum-applying points 25,in a bath 29 containing adhesive. The cam 27 is so timed that the points 25 bear against the strip 3 just prior to each feeding stroke, i.e., when the strip is stationary. The strip is severed by means of a pivotally-mounted blade 31, Fig. 3, co-operating with a secondary blade 37, and secured to a rocking lever 33 carrying at one end a lever 34 which is maintained in contact with a cam 35. A bracket 38 carrying a pad 39 for pressing the severed strip on to the article is secured to the blade 31, and is so disposed that just after a length of strip is severed, the severed length is pressed on to the article. In a modified means, Fig. 6, for applying adhesive to the strip material, gum is transferred from a roller 48 immersed in a bath 49 containing adhesive to a roller 51 in its retracted position, and the roller 51 is adapted, when its outermost position, to apply adhesive to gum applying points 55 which are mounted so as to reciprocate vertically from the lowermost position shown in which adhesive can be applied, to an upper limit position in which they contact with the strip material 56. In a modification, the strip material may be caused to adhere to the box or other article by the application of heat to the material either during its passage through the machine or during the pressing of the severed strip on to the article.