Patent GB-190622888-A (GB)
Title: Method of and Means for Recording and Reproducing Speeches, Music and the like by the aid Phonographic Instruments
Inventor: THORMEYER FRANZ EWALD
Filed: 1906-10-16
Granted: 1907-10-16
Abstract: 22,888. Thormeyer, F. E. Oct. 16. Kinematographs. - Two or more phonographs or gramophones are combined and used alternately to reproduce lengthy speeches, music, and the like. Figs. 1 and 2 show elevation and plan of two gramophones, with record disks b, b<1> and regulating - plates h, h<1> with electric tripping-devices. The record table a is provided with an adjustable cam c which trips an anchor d, controlled by a spring d<2>, at every revolution and rotates the regulating-disk h, made of non-resonant material and driven by a spring g, through the space of one tooth f. The disk h has a flanged edge i with an opening k whereby spring- controlled hooked contact-levers m, m<1> may slip through and complete electric circuits. When the contacts o, o<1> are connected, which is prearranged by the position of the cam c in a series of holes c<2> in the table a and the position of the disk h, a magnet w<1> is energized, pulling a pivoted lever r<1> from a shoulder ql on the table a<1> of the second talking-machine and thus starting the latter. When the opening k reaches the contact-lever m<1>, the contacts o<2>, o<3> are closed and a magnet s is energized, to attract the pivoted rod r in the way of the shoulder q and stop the rotation of the table a. During the interval between the opening k passing the contactlevers m, m<1>, the second table a<1> has been acquiring its normal speed and thus continues the speech without a break. Similarly, the contact-levers m<2>, m<3> of the second machine respectively energize the magnet w to start the first machine again, and to energize the magnet to stop the second machine. The cam c may be used to complete a circuit to operate the anchor d electrically. Fig. 5 shows a modified form in which two cylindrical records 10 are driven alternately from the pulley 1<a> by the same motor. A broad pulley 3<a> drives a wheel 4<a> directly and a similar wheel 8<a> indirectly through a wheel 5<a>, shaft 6<a>, and wheel 7<a>. The wheels 4<a>, 8<a> connected by a rod 13 are loose on a shaft 9<a>, and revolve in opposite directions. Worms 14 rotate toothed disks 15, openings 19 in the latter allowing pivoted rods 18, 18<1> to fall through and press the conical portions 20 of the wheels 4<a>, 8<a> to cause them to engage and disengage alternately with the holders of the cylinders 10. Fig. 6 shows an arrangement in which the tables 27, 27<1>, are adapted to be engaged alternately with the driving-gear by means of a toothed clutch 30<1> operated by a handle 31, or a friction clutch consisting of cones 32, 33, operated by a handle 31<1>. Fig. 8 shows another modification in which a number of cylindrical records mounted radially on two tables are consecutively rotated by a double clutch 36, the tables being each rotated to bring the next cylinder opposite the clutch. The phonic line of a disk preferably commences near the middle. A short guiding-line 40, Fig. 10, may be cut in the record to mark the starting-point, or a small pointer secured to the record may indicate the same and also serve as a stop for the sound-box and at the same time hold the record disk on to the table. Fig. 13 shows a stop 43<11> forming part of a ring 51 which is screwed to the mandrel 53, arranged so that, when the record 48 and the sound-box carrier 47 rest against the stop, the stylus is then in the starting position. While the stylus is running on the blank fore line before the phonic line as the record is acquiring its normal speed, a flap valve in the sound passage may be used to cut off any unnecessary sound. When recording, the number of revolutions of the phonic lines is counted on a separate surface running synchronously, to enable the cam c and disk b to be placed in their correct initial positions.