[PT014AAN], Letter from U.S. Patent Office. Commissioner to Thomas Alva Edison, Dyer and Seely, November 14th, 1889

Item

Abstract

[Railroad signalling appn filed 16 Feb. 1886] This case, since the amendment of 14th ultimo, has been considered.##The claims present nothing of patentable novelty over Smith, #247,127, Sep. 13, 1881--R.R. Car Teleg.--in view of Mees & Sherman, and English patent #3521 of 1874, of record.##All that applicant has done is to substitute a cable condenser for a plate condenser, which cable may be extended over one or more cars. There would be no invention involved in coupling the plate condenser (the metal roofs) of Smith, and thereby forming a condenser extending over a number of cars. The reel is a common expedient upon the use of the cable. Mees and Sherman show that it is old to locate conductors upont the roofs of cars, and the English patent shows the common use of the reel.##To simply substitute the flexible continuous cord or rope and its accompanying reel of the English patent, for the condensing platse of Smith, can involve no invention, and yet this substitution produces the applicant's device.##Attention is also called to the fact that condensing plates or conductors of several cars have been joined to form a conductor "extending without break (when joined) lengthwise of two or more cars"; see Edison & Gilliland, #350,234, Oct. 4, 1886--R.R. Car Teleg.##The claims are rejected.

Date

1889-11-14

Decade

1880-1889

Type

Identifier

PT014AAN

Folder Set

PT014

Title

[PT014AAN], Letter from U.S. Patent Office. Commissioner to Thomas Alva Edison, Dyer and Seely, November 14th, 1889

Microfilm ID

45:580

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University