clamped between the neck finish and the cap 18 so as to securely attach the pump 10 to the container 12 the pump 10 further includes a collar broadly denoted by the numeral 22 having an inner tubular shank 24 fig5 received down into the open upper end of the body 14 and an outer upper annulus 26 disposed exteriorly of and generally above the upper end of the body 14 shank 24 is retained in body 14 by circular interfitting snap beads and grooves 27 and telescopically receives the reciprocal plunger 28 of the pump the annulus 26 is formed to include a portion of structure which may be broadly referred to as locking means 30 for releasably locking the plunger 28 in a fully depressed position such as shown in fig3 for example that portion of the locking means 30 found on the annulus 26 takes the form of a series of three equally and circumferentially spaced notches 32 together with overhanging ledges 34 interspersed between the notches 32 and projecting radially inwardly from the periphery of the annulus 26 axially extending stops 36 are provided at the clockwise end of each ledge 34 between the latter and the shank 24 therebelow and the annulus 26 is joined radially with the shank 24 by a series of three radially extending abutments or bars 38 disposed at the upper end of the shank 24 and aligned axially below the corresponding notches 32 that portion of the locking means.