On a 400 acre site a few miles from the factory, Packard has built the most unique proving ground in tb8 world of industry. Besides containing a 2fc mile long, 50 foot wide, banked turn, oblong race track, this proving ground contains a perfect airplane landing field. -Equipment on this experimental speedway consists of everything from a towing dynamometer to a testing laboratory.
This illustration shows the instruments for recording temperatures used on continuous heat-treating furnaces. A line is drawn on each of the charts throughout each run and this accurately records the temperature. Equipment of this type is used on all heat-treating furnaces, enameling ovens, paint drying ovens, core ovens and all places where accurate temperature control is necessary.
This illustration shows the continuous carburizing furnaces used for case-hardening such parts as transmission gears, rear axle ring gears, etc. The work is pushed through one of these furnaces at regular intervals and requires 12 hours for the complete "cooking" process. After parts are removed, they are quenched in oil or other solutions to harden them.
After the cylinders are bored and reamed to size, the honing machine puts on the final velvet-like finish, so necessary today in the use of high compression motors which demand such. a small clearance between cylinder and piston. Cylinder grinding so commonly used formerly, is now obsolete.
The usual method of finishing a crankshaft bearing is to use a hand lap while the shaft is rotating in a lathe. In the Packard factory the idea illustrated in this picture was originated to hone to size and to correct out-of-roundness and taper on Packard crankshafts - again to insure and assure your customer's investment. Packard has about $60,000 invested in a sufficient quantity of these machines to keep up with present-day production.
This machine is used for testing the form or curve of t'he teeth of transmission and other gears after they have been ground. To have the tooth contour correct in transmission and other spur gears is as important as the unit itself, for long gear life cannot be obtained without a very careful study and check of these important points. Every gear blank and every tooth on the finished gear are not only carefully made, but are manufactured completely in the Packard factory.
1932
08/16/2018 22:04
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