Tinfoils 'R Us
Posted: Thu Jan 28, 2016 5:27 pm
Given how rarely it happens, acquiring an original tinfoil phonograph is always a huge thrill. Here's my latest happy discovery -- a very large (2 feet wide) and very finely-finished exhibition machine made ca. 1878-1885 by Leppin & Masche in Berlin.
Leppin & Masche was a manufacturer of fine technical and scientific instruments, and this beauty is typical of high-end devices of the 19th century, with gold-lacquered brass and blued steel screws. The speaker is assembled from two different pieces of wood, mahogany for the inside and rim, and ebony for the exterior. All of the adjusting screws have knurled lock nuts.
The speaker assembly is particularly interesting, with the hinge for the speaker mounted on top of a brass pole rather than at the base as is typical. With no place in front of the speaker to put a support bracket for the reproducer / recorder head and its adjusting screw, Leppin & Masche took the unusual approach of mounting a casting behind the mandrel which engages the corresponding depth adjusting screw at the very top of the speaker. An elegant and decorative solution. The diaphragm is huge, 3.5" in diameter. The mandrel is 5.5" long and 4.25" in diameter. A big machine, definitely not a parlor toy.
It's entirely original, including the perfectly intact stylus and its unusual A-shaped mounting spring seen in the original catalog.
So far I have only been able to find 3 others, two of which are mis-attributed to A. Küss in books published in the 1970s. Thanks to forum member Starkton I now have documentation in the form of an original catalog of Leppin & Masche with engravings that clearly show this same machine, but without a flywheel.
The catalog offered 3 different mandrel sizes: 7cm (2.75"), 14cm (5.5"), and 20cm (7-⅞"), at 65, 100, or 150 Marks respectively. The catalog description reads "Edison's Phonograph, on a mahogany base with brass mandrel and a speaker with mica diaphragm, with fine adjusting screw, with a funnel to speak into and instructions for use."
It was filthy when I got it, with 100+ years of dirt. But it cleaned up beautifully and after a few minutes of tweaking the adjustments I got it to talk on the first try. It would work even better if I replaced the gaskets but this is so thoroughly original that I am going to leave it alone. I have replica tinfoils for demonstrations, there's no reason to risk damage to such an exquisite machine as this. I'm satisfied that I know it is perfectly capable of working as it did 130 years ago.
Leppin & Masche was a manufacturer of fine technical and scientific instruments, and this beauty is typical of high-end devices of the 19th century, with gold-lacquered brass and blued steel screws. The speaker is assembled from two different pieces of wood, mahogany for the inside and rim, and ebony for the exterior. All of the adjusting screws have knurled lock nuts.
The speaker assembly is particularly interesting, with the hinge for the speaker mounted on top of a brass pole rather than at the base as is typical. With no place in front of the speaker to put a support bracket for the reproducer / recorder head and its adjusting screw, Leppin & Masche took the unusual approach of mounting a casting behind the mandrel which engages the corresponding depth adjusting screw at the very top of the speaker. An elegant and decorative solution. The diaphragm is huge, 3.5" in diameter. The mandrel is 5.5" long and 4.25" in diameter. A big machine, definitely not a parlor toy.
It's entirely original, including the perfectly intact stylus and its unusual A-shaped mounting spring seen in the original catalog.
So far I have only been able to find 3 others, two of which are mis-attributed to A. Küss in books published in the 1970s. Thanks to forum member Starkton I now have documentation in the form of an original catalog of Leppin & Masche with engravings that clearly show this same machine, but without a flywheel.
The catalog offered 3 different mandrel sizes: 7cm (2.75"), 14cm (5.5"), and 20cm (7-⅞"), at 65, 100, or 150 Marks respectively. The catalog description reads "Edison's Phonograph, on a mahogany base with brass mandrel and a speaker with mica diaphragm, with fine adjusting screw, with a funnel to speak into and instructions for use."
It was filthy when I got it, with 100+ years of dirt. But it cleaned up beautifully and after a few minutes of tweaking the adjustments I got it to talk on the first try. It would work even better if I replaced the gaskets but this is so thoroughly original that I am going to leave it alone. I have replica tinfoils for demonstrations, there's no reason to risk damage to such an exquisite machine as this. I'm satisfied that I know it is perfectly capable of working as it did 130 years ago.