Патент USA US2403498код для вставки
July 9, 1946I G. E. BRITTINGHAM CUT-OUT DEVICE FOR TELEPHONE TRANSMITTERS ’ Filed Juli/‘25, 1944 “2,403,498 2,403,498 Patented July 9, 1946 UNITED STATES PATENT OFFICE 2,403,498 CUTOUT DEVICE FOR TELEPHONE TRANSMITTERS Gerald E. Erittingham, Ontario, Oreg. Appiication July 25, 1944, Serial No. 546,480 3 Claims. (01. 179-158) 1 2 This invention relates to an improved cut-out device for telephone transmitters and has for its angular switch element H, with its hypotenuse primary object to provide simple and effective side disposed inwardly and its exposed corner l8 means whereby a subscriber using the telephone may temporarily out out or disconnect the tele phone transmitter from its circuit when he de sires to prevent the party with whom he has the telephone connection from hearing noises or preferably rounded. conversation in the room or other place while the subscriber is not talking into the transmitter. It is also an important object of the invention to provide a simple, inexpensive, and reliable de vice for the above purpose which can be readily applied to the telephone transmitter, and Which is especially adapted to be applied to the French or hand type of telephone instrument, so that when the instrument is laid down on either side on a table or other surface the transmitter cir IE on which is hinged the smaller end of the tri At the end of the hypotenuse side of the switch element is a dielectric or insulated cross head 19, on the outer side of which is secured a contact bridging member 20 by suitable means such as screws 2!. The switch element ll as a whole , may be made of dielectric material including the crosshead l9 or of conductive material with suit able provision for insulating the bridging member from the switch element and from the transmit ter housing. In Figure 2, the crosshead I9 is shown posi tioned within the transmitter housing beyond the outer end of the slot l5 and toward the dia phragm end of the housing, in conformance with cuit will thereby be cut out. a the pivoting of the switch element at the inner With the above and other objects in view, my 20 end of the slot. However, an opposite arrange invention consists in the novel features of con ment can obviously be made in which the switch struction, combination and arrangement of parts element is pivoted at the outer end of the slot [5 hereinafter more fully described and shown in the and its crosshead’s bridging element engages ap accompanying drawing, wherein a preferred em propriately positioned contacts. bodiment of the invention is shown only for il 25 The contacts 22 and 23, and 22' and 23' in lustration. the illustrated arrangement are suitably mounted In the drawing: in the inner side of the transmitter housing wall, Figure 1 is a fragmentary side elevation of a on opposite sides of the medium plane of swing French or hand type of telephone instrument, of the switch element, and are preferably at showing the transmitter portion, with the cut 30 least partly embedded or countersunk in the wall, in a position to be simultaneously and positively out device applied thereto; Figure 2 is an enlarged fragmentary sectional engaged by the bridging element 20 of the corre view taken along the line 2—2 of Figure 1 and sponding switch element as it is moved inwardly through the slot I5 against the outwardly press showing details of the switch; . Figure 3 is a plan view of the transmitter, with 35 ing tension of a suitable spring, such as the coil diaphragm removed, and partly in section to show spring 24 backed up by a suitable abutment 25 the arrangement of the switches; and provided in the transmitter housing, and which Figure 4 is an enlarged perspective of one of normally keeps the switch element pressed out the switch arms and its contact bridge. wardly as indicated in the upper part of Figure 3, Referring to the drawing, the French or hand 4-0 in which position the bridging member 21] is in type telephone instrument 5 includes the hand engagement with the contacts 22' and 23’ and the piece 5 terminating at one end in the generally normal transmitter circuit obtains. cylindrical transmitter housing 1 which is dis One of the contacts 22 has the transmitter posed at a convenient angle to the handpiece 6, circuit wire I3 connected directly to it, as shown and includes the removable annulus 8 which when 45 in Figure 3, while the remaining transmitter cir in place retains the diaphragm 9 relative to the cuit Wire I2 is connected to one side of the mag magnet to, whose coil H has one side connected net coil II and the other side of the coil is con with the transmitter circuit wire I2 and the other nected by the wire 26 directly to the contact 23’. side with the transmitter circuit wire i3, both The contacts 22' and 23 are connected together wires passing together through a grommet 50 by a wire 21. As a result, whenever the telephone equipped opening M in the bottom of the trans instrument is laid down on either side on a sup mitter housing, as shown. porting surface as shown in Figure 3, the corre Each of two diametrically opposite sides of the sponding switch element will be pushed inwardly wall of the transmitter housing is formed with a slot [5, in one end of which is ?xed a pivot pin 55 and open the transmitter circuit. 2,403,498 3 7 Having thus described my invention, what I claim is: 1. In a telephone instrument having a trans mitter of a type adapted to be temporarily laid on a supporting surface when in use, a transmit 4 wardly to disengage said bridging element from the contacts and open the transmitter circuit until the transmitter is raised from the supporting surface. 2. A telephone instrument, as in claim 1, where in said switch element comprises a block having at one end a crosshead carrying said bridging rest on said surface when so laid thereon, a trans member with the opposite end of the block piv mitter circuit within said housing, and a switch oted in said opening. comprising a pair of switch contacts mounted 3. A telephone instrument as, in claim 1, where within the housing and connected in said circuit 10 in said switch element comprises a block and said and an outwardly projecting spring pressed switch opening comprises a slot conformably passing element having a bridging member, normally the block with a pivot pin traversing one end of electrically bridging, said contacts, said switch ter housing either side of which is adapted to element being pivotally mounted to project through an opening formed in one side of said housing sufficiently to engage said supporting surface when the transmitter is laid on its side thereon and be thereby pressed far enough in the slot and pivotally supporting the correspond ing end of the block, another portion of the block having a crosshead within the housing and carry ing said bridging member. GERALD E. BRITTINGHAM.