See quotations.

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1830.  Peeping under the forestick at the red-hot flip iron, usually styled a loggerhead, Peter sat carelessly:—Landlord, what’ll you bet I can’t bite an inch off that are red-hot loggerhead?—Mass. Spy, July 7: from the N.Y. Constellation.

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1859.  Ran away from school one day to see Phillips hung for killing Denegri with a loggerhead. That was in flip days, when there were always two or three loggerheads in the fire.—Holmes, ‘The Professor at the Breakfast-Table,’ ch. i.

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1860.  Three or four loggerheads (long irons clubbed at the end) were always lying in the fire in the cold season, waiting to be plunged into sputtering and foaming mugs of flip.—O. W. Holmes, ‘Elsie Venner,’ ch. v. (N.E.D.) (Italics in the original.)

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1867.  

        Here snapped a fire of beechen logs, that bred
Strange fancies in its embers golden-red,
And nursed the loggerhead whose hissing dip,
Timed by nice instinct, creamed the mug of flip
Which made from mouth to mouth its genial round,
Nor left one nature wholly winter-bound.
J. R. Lowell, ‘Fitz-Adam’s Story,’ Atlantic Monthly, xix. p. 23 (Jan.).    

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