i6 Haldane Gee — Hoiry Wilde 



1866. 



3209 Electro-magnetic and magneto-electric machines. 



Relates to the new generator with a multipolar armature. A 

 special type of commutator is described. 



1867. 

 S42 Arc Lamps. 



1871. 

 151 1 Coating of iron \\\\\\ copi)er. 



618 Producing and regulating electric light. Improvements on No. S42 



(1867). 



Arc Lamp. The carbons are made to approach or recede 

 from each other by means of a right- and left-handed screw. 

 Each screw can be actuated independently, so as to keep a 

 fixed focus. 



IIolop/iulc. A lens or parabolic reflector is mounted on a 

 platform which carries the lamp. The platform may be revolved 

 about a vertical spindle by the use of a worm gearing. The 

 platform may be tilted as desired by a hinge and screw. 



1874. 

 1554 Excavating coal, etc. 



Transmission of electric power. A reciprocating electric motor 

 is described, which may be used for cutting coal. 



1875- 

 4515 Making printing rollers. 



1878. 

 3250 Producing and regulating electric light. 



Arc Lamp. Two vertical carbons near each other. One 

 carbon holder is pivoted at its lower end, and by an electro- 

 magnet the carbons are separated at the top and the arc is 

 struck. When current is off an opposing s'pring brings the tops 

 into contact. 

 5197 Electric light apparatus. 



Improvements in previous patent. 

 1228 Induction coils. 



1880. 

 500S Imi)roveincnts in dynamos. 



18S2. 

 2256 & 

 3834 Arc Lamps. 



(I am indebted to Mr. E. L. Sandbach of Messrs. Slater, Heelis & 

 Co. for placing at my disposal a number of documents chiefly relating 

 to Dr. Wilde's legal actions; to Mr. J. W. Winstanley for infor- 

 mation about the brothers Wilde; to. Mrs. Marsh, of Longsight, 

 for details relating to the association of her husband with Messrs. 

 Wilde & Co. ; and to Miss Crabtree for assistance in the com- 

 pilation of a list of Wilde's papers and apparatus.) 



