Green’s Dictionary of Slang

a roulette table; thus jenny-spinning n., roulette playing.

1836		Comic Almanack Sept. 63: And grateful to the Spinning Gin-ny, / That lined my purse with many a guinea.
1889		Clarkson & Richardson Police! 223: We find lower orders patronizing [...] jenny-spinning, dice, and all sharping practices in which fraud and roguery predominate.
1894		A.A. MacInnes Straight as a Line 133: ‘Spinning jenny’ spielers; men who offered you ‘three throws for sixpence,’ and a shilling every time you broke the pipe, and a host of others.
1902		Bulletin (Sydney) 26 July 26/1: The Christian Brothers on Charters Towers held a bazaar last week, at which spinning-jennies, raffles, lotteries, lucky-bags &c., had full swing, and nobody objected. An unfortunate spieler lent his spinning-jenny to the bazaar for two nights, but the third day being that of the races, the police ‘copped’ him with it and smashed it up.
1936		‘Banjo’ Paterson Shearer’s Colt 55: Men operating spinning jennies, and booths where raucous-voiced ‘barkers’ were inviting all and sundry to come in.
1938		F.D. Sharpe Sharpe of the Flying Squad 215: Spinning Jenny is a real mug’s game.
1981		(con. c.1920) A. Harding in Samuel East End Und. 92: We were at a racecourse in Essex, Chelmsford – three or four of us had gone there to play the spinning jenny.