This invention relates to a tamper-proof cap for a container and a container therefor.
Containers for supplying goods such as potable water are provided with caps and it is desirable that such caps are made tamper-proof to eliminate adulteration between the point of manufacture and the point of supply to the consumer.
This invention therefore proposes a simple and effective tamper-proof cap for a container which can be readily installed in place to lock the cap with the container, the lower portion of the cap, however, being manually tearable from i ts upper portion, to leave the upper portion for covering the mouth of the container.
In order to enable to said lower portion of the cap to be manually torn away from its upper portion, it is preferred to have the cap made of a material which allows the 1atter portion to be torn away from the former. Thus, for instance, the cap can be made of piastic, for rendering the same sufficiently flexible to permit the lower

portion to be torn of f , the upper portion being sufficiently rigid to be retained on the neck of the container for covering its mouth.
Since the cap, when once opened cannot be restored to its original locked condition, adulteration of the contents of the container is eliminated- At the same time unlocking the cap from the container is a simple procedure, at the user end, because all that one has to do is to manually grip a tag provided for the lower portion of the cap and tear the lower portion away from the upper portion. The latter portion of the cap can be used in the normal way for covering and uncovering the mouth of the container.
Empty containers, after use, can be sent back to the pi ace of manufacture for being cleaned, refilled and fitted with fresh caps locked to the containers, which if opened, before they reach consumers, would indicate that they have been tampered with.
Various other features of the tamper-proof cap

and container proposed herein would be apparent from the following further description thereof given hereunder.
According to this invention, the tamper-proof cap for a container comprises an upper portion snugly seatable on, and around, a raised perinietral boss provided on the exterior of the neck of the container; a lower portion having on its interior a perinietral ridge seatable in, and around, a waist provided on the exterior of the said neck, to form a tight snap-fit therewith and thus lock the cap to the container, said waist being located below the said boss; a manually grippable tag provided for the lower portion of the cap, for enabling the said lower portion to be manually torn off the upper portion, leaving the said upper portion in place, on and around, the said boss, for covering and uncovering the said mouth.
This invention will now be described with reference to an embodiment thereof which is illustrated by way of example in the accompanying drawings wherein

Figs.l and 2 respectively illustrate the cap in top pi an view and in sectional elevation before the lower portion thereof is torn off
Figs.3 and 4 respectively i1lustrate the cap in top pi an view and sectional elevation after the lower portion thereof is torn off
Fig. 5 i1 lustrates the torn strip relating to the lower portion of the cap
Fig,6 illustrates the view at AA in Fig.5
Fig.7 illustrates the neck of the container without the cap
Fig.8 illustrates the neck of the container with the cap locked in place
and
Fig.9 illustrates the neck of the container and the upper portion of the cap in place after the lower portion of the cap has been torn off.
The neck N