Frederick Grogan submitted two patent applications, just prior to setting up the Arora Company.
Patent No. 23,676
Submitted on 7th December 1914, whilst living at No. 14, Argyll Mansions, Kings Road, Chelsea, the patent was concerned with electrical heating elements. The main objective of his invention was to “provide a heating element which will throw out a large amount of radiant heat with a relatively large section of resistance wire and a low current density…..”. Another objective of his patent application was to provide a method of manufacturing his design into an electric radiator or a hot plate, grill or oven. The patent was duly accepted on November 18th 1915.
Patent No. 2,570
His second outstanding patent application was a joint submission with The British Electric Transformer Company Limited, of Hayes, Middlesex. Submitted on 17th February 1915, it was a more technical invention aimed at providing a simple means “of securing the safety of an electrical circuit and at the same time indicating more or less the current condition obtain in such circuit”. The patent was accepted on December 30th, 1915. Whether Frederick Grogan’s agreement with The British Electric Transformer Company Limited permitted him to use this patent in relationship with this new manufacturing Company is unknown.
Patent No. 12,984
On 10th September 1915, Frederick Grogan and Eric Burder submitted a joint patent application, No. 12,984, entitled “Improvements in Electrical Cooking Apparatus and in Switch-gear therefor”. This appears to be an enhancement of Frederick Grogan’s previous patent, No. 23,676, which was at the time still not approved. The new patent application essentially gave the user greater control over the temperature of the hot plate (boiling plate in their terms) than had been available previously. The patent described four claims for the invention.
Firstly: The improved composite electrical boiling plate which consists in mounting three or more separate “open” elements each forming a segment of the whole boiling plate and connected together so as to obtain gradations of heat, substantially.
Secondly: In combination with a composite boiling plate as claimed in Claim 1, the employment of the electrical connections as described, and illustrated in Figure 1 of the drawing with control means, substantially as described, and illustrated in Figures 3 and 4, for the purpose of obtaining gradations in heat.
Thirdly: In combination with a composite electrical boiling plate as claimed in Claim 1, the employment of electrical connections as described and illustrated in Figure 2 of the drawing for the purpose of obtaining gradations of heat and controlling means, substantially as described and illustrated in Figures 3 and 4 of the drawings.
Fourthly: The composite electrical boiling plate and switch-gear with interlocking controlling device constructed, combined and arranged substantially as described and illustrated in the drawings for the purpose set forth.
The patent was subsequently approved on 7th September 1916, almost exactly a year after being submitted.