Abstract: A cutting tool assembly comprising an elongated tool shank having, at a side adjacent a leading end thereof, a shank holding portion and an exchangeable adaptor having an insert retaining portion for retaining a replaceable cutting insert and an adaptor mounting portion releasably scoured to the shank holding portion by two clamping screws. The clamping screws are inserted into respective adaptor through bores formed in the adaptor mounting portion and threaded bores formed in the shank holding portion, the threaded bores being substantially aligned with the respective adaptor through bores. One of the adaptor mounting and shank holding portions is formed with a recess and the other one is formed with a protrusion mating with the recess and received therein, the bores passing through the recess and the protrusion and being oriented transversely to an axis of relative rotation of a workpiece with respect to the tool.

Abstract: A metal cutting tool assembly comprising a rigid holder blade, an insert receiving slot formed in a leading end of the holder blade and defined between a resiliently displaceable clamping jaw formed integrally with the holder blade and rigid base jaw forming part of the holder blade, spaced apart displacement and supporting surfaces respectively formed in or on the clamping jaw and the holder, and a slot opening key, with a pair of spaced apart projecting prongs of the key adapted to engage the surfaces. At least one of the prongs is displaceable with respect to the holder blade so as resiliently to displace the clamping jaw outwardly with respect to the base jaw into an opening position for insertion or removal of an insert.

Abstract: A telephone answering system which can be interconnected to a telephone line and includes two tapes, one of which is utilized for recording incoming messages from the telephone line, and the other of which is used basically for playing outgoing messages onto the telephone line. The outgoing message tape includes a plurality of tracks each of which can be selectively placed in communication with the telephone line. A decoding apparatus is responsive to numerals dialed onto the telephone line by the caller with which the caller can select the particular track to be placed in communication with the telephone line and thereby receive the particular outgoing message contained on that track. By dialing an additional number, the caller can also change over the operation of the outgoing message tape to a record mode whereby he can utilize that tape for also receiving incoming messages from the telephone line and cause the message to be placed on a particular selected track.