From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification and parts list for front and rear bus heating units from Tropic-Aire, Inc.
| Identifier | ExFiles\Box 137\1\ scan0070 | |
| Date | 30th August 1930 guessed | |
| Front Heating Unit Supplies ample heat for buses of 28 passenger capacity or less. Fans are by Hamilton Beach, the best obtainable. The air is drawn from the floor board by the action of the fans, thoroughly heated in passing through the heater core and circulated to all parts of the bus body. The entire unit fits under the instrument board entirely out of the way. The control switch is mounted on the instrument board within easy reach of the driver. List Price...................$150.00 Rear Heating Unit In the larger buses, this rear heater is proving highly valuable by maintaining even temperature for both front and rear seat passengers. The rear unit is similar in construction to the front heater, except that it is installed under the rear seat eliminating the necessity for the deflector. Installation is comparatively simple as shown in the illustration on page 1. This heater will deliver approximately 90% as much heat as the front unit. Operated together they constitute the most perfect bus heating system available today. List Price....$150.00 Assembly of Parts (Front Unit) (Order parts for rear unit by same numbers specifying “For Rear Unit”) Parts List: H-1-V.....Front plate H-84-V.....Deflector plate H-10-VA.....Heater fastening bolt H-3-BA.....Back plate H-212-V.....Core assembly H-12-BA-3.....Spacer H-11-BA-1..Spacer H-64-FA....3/8 x 5/8” Carriage bolt H-119-S....Fan blade H-110-BA...Motor (12 or 6 volt) H-96-VA....Shroud side plate H-95-BA-2..Shroud top plate H-121-BA...Hose connection H-50-BA-4..Single connection manifold H-42-VA....Drilling template H-201-OD...Heater valve H-71-BA....Steel tube Image Text & Labels: HOT WATER HEATER TROPIC-AIRE 5/16” CHROMIUM PLATED CAP NUTS 5/16” NUTS AND LOCK WASHERS 1 3/8” HOSE CLAMPS SHOWING BUTTERFLY VALVE TROPIC-AIRE, Inc. 60 Eleventh Ave. N. E.{Mr Elliott - Chief Engineer} Minneapolis, Minnesota | ||