Green’s Dictionary of Slang

a coat or cloak.

c.1566		Harman Caveat for Common Cursetours in Viles & Furnivall (1907) 85: I towre the strummel trine upon thyn nabchet and Togman I see the strawe hang upon thy cap and coate.
1592		Groundworke of Conny-catching n.p.: [as cit. c.1566].
1608		Dekker Lanthorne and Candle-Light Ch. 1: They call a Cloake (in the Canting tongue) a Togeman, and in Latine, Toga signifies a gowne, or an upper garment.
1612		Dekker ‘Of Clapperdogeons’ O per se O N: He loves to keepe himselfe warme, wearing a patched Castor (a Cloake) for his upper roabe, under that a Togmans .
1637		Dekker ‘Canting Song’ in Eng. Villainies (8th edn) O3: Though thy Togeman were not new, yet the Ruffler in’t was true.
1648		Dekker ‘Canters Dict.’ Eng. Villainies (9th edn) n.p.: Calle, togeman or Joseph, a Cloak or Coat.
1665		Head Eng. Rogue I 46: Some words do retain something of Scholarship, as Togeman, a Gown.
a.1674		‘A Wenches complaint for . . . her lusty Rogue’ Head Canting Academy (1674) 17: [as cit. 1637].
1688		R. Holme Academy of Armory Ch. iii item 68c: Canting Terms used by Beggars, Vagabonds, Cheaters, Cripples and Bedlams. [...] Togman, a Gown or Cloak.
c.1698		B.E. Dict. Canting Crew n.p.: Togemans c. a Gown or Cloak. I have Bit the Togemans, c. I have Stole the Cloak. ’Tis a Rum togemans, ‘tis a good Camlet-Cloak, Let’s nim it, let’s whip it off.
1707		J. Shirley Triumph of Wit 198: Though I no Togeman wear, nor Commission, Mish, or Slate.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1754		Scoundrel’s Dict. 16: A Cloak – Togeman.
1785		Grose Classical Dict. of the Vulgar Tongue n.p.: Togmans, a cloak, (cant).
1796		Grose Classical Dict. of the Vulgar Tongue (3rd edn) n.p.: togemans. A cloak. Cant.
1809		G. Andrewes Dict. Sl. and Cant.
1811		Lex. Balatronicum [as cit. 1796].
1823		‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc. 176: Togamans — a gown or cloak, for either sex.
1835		G. Kent Modern Flash Dict. 33: Togman, a cloak.
1848		Flash Dict. in Sinks of London Laid Open [as cit. 1835].