A telephone set having a base unit and a handset which is removable from a rest position on the base unit to make a telephone call and replaceable in the rest position following the call, and means for receiving a telephone enabling element which must be inserted into the receiving means to enable a call to be made and should be removed from the receiving means on completion of the call, characterized by means for ensuring that replacement of the handset in the rest position is obstructed when t...

The illumination set has several lamp sockets, which are arranged as a string by an electrical cable (104). Each lamp socket has a housing (121), which is composed of a sleeve (128) and two oppositely positioned inner parts (126, 127) carrying contact members (124, 125) connected to the cable (104). The inner parts (126, 127) at the same time constitute a bottom part (132), consist of a thermoplastic synthetic material and are interconnected by a pivot (133), which is integral therewith. The lam...

In a telephone set, a base unit has a front recess defined by a bottom and a sloping wall including a front part and a rear part, and a rear recess, and a protrusion is provided on the front part of the sloping wall and extends rearward. A locking piece is provided to extend through an aperture formed in the rear part of the sloping wall of the front recess. The locking piece extends toward the protrusion and is pushed toward the protrusion by a spring. The spring permits the retraction of the l...

A fast and inexpensive set-on oscillator is disclosed. According to the invention, the input signal is processed in two paths. In the first path, a coarse estimate of the input frequency is made. In the second path, the input signal is down converted to a baseband. The frequency of the relatively low frequency baseband signal is measured and a new signal at this frequency is synthesized. The synthesized signal is up converted in frequency. The down-conversion process is performed ambiguously and...

A composite mailable business record and envelope assembly requiring only single manual entries to produce an original enclosed in an envelope and a retained record copy has only a single sheet foldable into three page sections to produce an addressed envelope with entries retained on the record page. The record page has a tab end for retaining in a book or the like.

An improved die set for vertical stamping presses producing stamping. Knockout pins are replaceable from the upper end of the reciprocating shoe by movement of a bushing without requiring removal of the die and die retaining components which would require realignment.

A set of cuvettes wherein the measurement windows (5) are in the bottom of the cuvettes and surrounded by a matt-faced area (8). The matt-faced area eliminates the access of diffused light to the detector of the photometer.

Microcuvette set which comprises several cuvettes (5) in a matrix form, arranged so as to be handled as one whole unit. The frame portion of the microcuvette set (1) consists of a preferably rectangular frame portion (2) designed so that two or more cuvette-set components (3) can be attached to it in the longitudinal or transverse direction one after the other. Each of the said cuvette-set components (3) consists of several cuvettes (5) disposed in a line or matrix form and connected to each oth...

A constructional toy set has building members and coupling members having dimensions which are equal to, multiples of, or specific fractions of a basic unit size, have a basic thickness or a multiple thereof, have through holes of basic hold diameter or multiples thereof with shapes symmetrical to either or both longitudinal and transversal axes thereof. End regions of the members may be semi-circular in form, and the through holes are positioned on the longitudinal axis or symmetrically to the ...

A mitten set is arranged to include a first, second, and third glove member to permit simultaneous warming and securement between an adult and an associated child, wherein the first glove member is a first sizing, and the second glove member a second sizing greater than the first sizing. The first glove member and the second glove member each include respective first and second glove member fingers, and the third glove member includes a third glove member finger, as well as a second entrance ope...