Mack Scania Engines

[harrybarbon]

On 9/8/2025 at 3:01 AM, james j neiweem said:

I just recently read somewhere that it was Chicago cab. Ma bee they built some. My one brain cell can't remember where I heard this. Could have been AI or face book BS. Us old timers with trucking history and knowledge have to laugh at this AI BS. I almost do not want to correct AI as it will keep getting smarter and smarter. There is a logging website on face book that takes parts and pieces from Mack E's and B's, IH KB's, White WC's and A-Cars and conjeur up a truck. They blow it on engine models and years installed routinely. I'll stick with my historical head knowledge and that of others over AI BS for now. I guess in the end they will get it right. Yeah looking up Chicago Cab gives you a lot of info on yellow and checker cab rabbit holes!

International Harvester Co (IHC) developed the Comfo-vision cabin styling in 1948 most likely at Fort Wayne Indiana. They were in house designs and they produced scale clay models. Due to WW11 restrictions on in house designs, this meant that IHC and other vehicle manufacturers were short on design staff and so had to use outside independent design and engineering firms to add to their design teams capacity. The firm of Ornas and Labarr, Detroit, was asked to improve the Comfo-vision cab design. It also possible that the industrial design firm of Raymond Loewy had an involvement in the design improvement of the Comfo-vision cabin, because Raymond's firm was another call in for additional design work on the L model. 

In 1949 the Comfo-vision cab was first produced by IHC for the L model series at Fort Wayne. It had a split rear window and the external door handles were a push button style, virtually the same as the Mack R model cabs. The Diamond T Comfo-vision cabs bought from IHC under licence had the same push button external door handles. The Comfo-vision cab was sent to Springfield, Ohio and Emmeryville California for the IHC models built at those plants and also the IHC plant in Canada.

Diamond T commenced using the IHC Comfo-vision cabins possibly from early 1950 or even 1949.

In 1953, Ornas and Labarre with the help of some moonlighting General Motors stylists redesigned the L model to create the R model with the same Comfo-vision cab. They produced a full sized clay model for approval. In 1953 IHC hired Ted Ornas as chief of styling, Ornas and Labaree closed their Detroit offices and moved into IHC Fort Wayne to work.

In 1955, Ornas redesigned the R model series and introduced the S series model, with the same Comfo-vision cabin. Ornas made changes to the Comfo-vision cabin, being a larger one piece rear window and larger door windows (lowering the door where the window starts), I don't recall any mention of making the cabin deeper, but that may have been possible. I did own a 1965 R model so I might see from old pictures if the cab was deeper.

IHC manufactured the Comfo-vision cab for the L, R & S series and the variation models at Fort Wayne and maybe at Springfield as well. I cannot find any information if the cab was manufactured in Emeryville, but it was possible because the IHC Emmeryville series with the Comfo-vision cab was produced only at Emmeryville, if not the cabs were shipped by rail from Fort Wayne to Emmeryville, same as IHC shipped cabs to Canada and from about 1963-1965 to Melbourne, Australia for the R model assembly.

Diamond T did manufacture trucks for IHC at its Chicago plant, using the IHC cabs, motors, frames etc because IHC could not keep up production for its sales orders.

IHC and most East Coast truck manufactures (Mack, Diamond T, White, Hendricksen etc sent their day cabs plus extra parts to the Orrville Metal Speciality Company, of Orrville Ohio to build their extended sleeper cabins and special builds such as the crew cabs and 1 man narrow cabs for steel and lumber flat bed trays etc. I have posted this information about Orrville a while back.

As to the cabs being built at the Chicago Manufacturing Company, I did read from one of my Mack books that Mack and IHC had their B model cabs and the Comfo-vision cabs built at the Chicago Man Co, which I recall was because IHC and Mack could not keep up production in house. I will try find what my books have about this. It is also possible that Chicago Man Co may have manufactured the Comfo-vision cabs for the truck companies that IHC licensed the use of the Comfo-vision cabs, Leyland for Canada, Diamond T, Hendricksen, FDW, the various fire engines manufacturers, etc.

IHC fitted the Comfo-vision cab up to 1971 on its M series (oil rigs and heavy duty types) and the F-series, 210 and 230 and possibly a run out thru 1972-73 on special applications, like monster trucks for the Middle East and US oil fields.

IHC licensed the use of the Comfo-vision cabs to about 1-12 truck manufacturers, including fire engines. I have seen pictures these fire engines etc that have the Comfo-vision cabs, closed and open styles.

From my information the Comfo-vision cabin was used for at least 23-24 years.

One bit of information about the Mack B model cab and the IHC Comfo-vision cab is that the door locks are exactly the same, but not the internal and external door handles. I think that the IHC comfo-vision and Mack B model cab door locks were made by the Chicago Manufacturing Company. 

 

[Geoff Weeks]

Well my memory is crap, I went out and looked on my Dart and the cab is by Chicago Mfg and it is on North Trumbal not Elston. 

So wrong about the name and location.