Details
The Terpuoscope Patent lantern
tin-lamphouse with plaque ROBERT H. CLARK, OPTICIAN & CO, ROYSTON, HERTS, the brass bound 7-inch lens with rack and pinion focusing, rackwork vertical adjustment, the base stamped THE TERPUOSCOPE, RD. PATENT NO. 12860, fitted with a later electric illuminant and ventilator, in a metal case
tin-lamphouse with plaque ROBERT H. CLARK, OPTICIAN & CO, ROYSTON, HERTS, the brass bound 7-inch lens with rack and pinion focusing, rackwork vertical adjustment, the base stamped THE TERPUOSCOPE, RD. PATENT NO. 12860, fitted with a later electric illuminant and ventilator, in a metal case
Literature
Hermann Hecht (1993), Pre-Cinema History, An Encyclopaedia and Annotated Bibliography of the Moving Image Before 1896, p. 340C and 362H.
Walter Tyler's catalogue, vol 2, (1st January 1891), The Optical Magic Lantern Journal and Photographic Enlarger, p. 76, for an illustration and brief description of the Terpuoscope.
Optical Magic Lantern Journal, 15 November 1889, vol. I, p. 44, for an illustration of the Terpuoscope.
John Barnes (1970), Barnes Museum of Cinematography. Catalogue of the Collection. Part 2. Optical Projection. The history of the magic lantern from the 17th to the 20th century, he comments on the apparatus: [sic] The Turpuoscope patented by Alfred Wrench in 1889...had an automatic registering slide-carrier and a rolling curtain effect, worked by rack and pinion.
Alfred Wrench, British Patent no. 12860, 14 August 1889.
'The objects are to provide means for exibiting both mounted and unmounted slides; to automatically register the latter and to conceal the change of slides by an arrangement which gives the effect of a falling curtain.
Behind the slide stage are a pair of vertical groove guides connected to the body of the lantern by distance-pieces. These leave a narrow space in which slide edges of the shutter-plate, which is raised by a rack and pinion with a crank handle. A platform is attached to the plate on which the new slide is placed . As the is wound up it moves across the lens (giving the effect of a falling curtain), and the new slides pushes the previous one up so that can be removed manually.
The slide is held by spring-catches in the grooved guides which give way as the new slide moves upward and spring forward and support it in a central position.'
Walter Tyler's catalogue, vol 2, (1st January 1891), The Optical Magic Lantern Journal and Photographic Enlarger, p. 76, for an illustration and brief description of the Terpuoscope.
Optical Magic Lantern Journal, 15 November 1889, vol. I, p. 44, for an illustration of the Terpuoscope.
John Barnes (1970), Barnes Museum of Cinematography. Catalogue of the Collection. Part 2. Optical Projection. The history of the magic lantern from the 17th to the 20th century, he comments on the apparatus: [sic] The Turpuoscope patented by Alfred Wrench in 1889...had an automatic registering slide-carrier and a rolling curtain effect, worked by rack and pinion.
Alfred Wrench, British Patent no. 12860, 14 August 1889.
'The objects are to provide means for exibiting both mounted and unmounted slides; to automatically register the latter and to conceal the change of slides by an arrangement which gives the effect of a falling curtain.
Behind the slide stage are a pair of vertical groove guides connected to the body of the lantern by distance-pieces. These leave a narrow space in which slide edges of the shutter-plate, which is raised by a rack and pinion with a crank handle. A platform is attached to the plate on which the new slide is placed . As the is wound up it moves across the lens (giving the effect of a falling curtain), and the new slides pushes the previous one up so that can be removed manually.
The slide is held by spring-catches in the grooved guides which give way as the new slide moves upward and spring forward and support it in a central position.'