These are the specifications of Kay-Gee 1875 and its thresher as given by the Keck-Gonnerman catalog (Catalogue 33 | Catalogue 35).
Engine Specifications
Kay-Gee 1875 is a 22 horsepower (16.4 kW), double-cylinder engine. The 22 horsepower rating is the pulling strength at the drawbar, the drive or "band" wheel is rated at 75 horsepower (56 kW). The Keck-Gonnerman Catalog gives the following specifications:
| Cylinders | Number: 2 Bore: 6.375 in. (16.2 cm) Stroke: 12 in. (30.5 cm) |
| Boiler | Diameter: 32.125 in. (81.6 cm) Length: 13 ft., 5 in. (409 cm) Thickness of Shell: 0.375 in. (9.6 mm) "The waist double butt strap riveted and made to stand 175 lb. steam working pressure." |
| Firebox | Width: 27.5 in. (69.9 cm) Length: 48 in. (121.9 cm) Height: 42 in. (106.7 cm) |
| Flues | Number: 47 Diameter: 2 in. (5.1 cm) Length: 84 in. (213.4 cm) |
| Band Wheel | Diameter: 40 in. (101.6 cm) Face: 12.5 in. (31.8 cm) Speed: 235 RPM |
| Traction Wheel | Height: 74 in. (1888 cm) Face: 20 in. (50.8 cm) |
| Front Wheel | Height: 44 in. (111.8 cm) Face: 10 in. (25.4 cm) |
Kay-Gee 1875's boiler holds about 200-300 gallons of water (760 L) and the two water tanks can hold about 100-150 gallons (380 L) each.
The engine was weighed in 2009 when it being transported to the Threshing Show. Its dry weight is 22,940 lbs. (10,405 kg).
The Indiana Special Thresher
Keck-Gonnerman made two types of separators or threshers: the smaller, wood frame "Junior" separator and the larger, steel frame "Indiana Special" model. Each model was available in various sizes. The main drive belt that connects to the engine was the only part that did not come with the thresher.
The thresher used with Kay-Gee 1875 has the following specifications:
| Dimensions | Width, Overall: 7 ft., 3 in. (2.2 m) Width, Inside: 54 in. (137.2 cm) Length (Feeder to Wind Stacker): 26 ft., 11 in. (8.2 m) Height: 8 ft., 4 in. (2.5 m) Wheels: 8 x 36 in. (20.3 x 91.4 cm) |
| Cylinder | Number of Bars: 14 Length: 32 in. (81.3 cm) Diameter, End of Teeth: 27.5 in. (69.9—cm) Number of Teeth: 140; Average Speed: 850 RPM |
| Concave | Surface: 32 x 72 in. (81.3 x 182.9 cm) Number of Teeth: 27 to 108 (depending on design of teeth) |
| Pans | Width: 52 in. (132.1 cm) Length: 17 ft. (5.2 m) Average Speed: 215 Beats per Minute |
| Sieves | Width: 50.75 in. (128.9 cm) Length: 43.375 in. (110.2 cm) |
Each thresher came with accessories which included: a complete set of belts, tools for maintaining the thresher and making repairs to the belts, a tongue to couple the thresher to an engine and extra teeth. All adjustments to the concave and sieves can be made while the machine is running.
The feeder and grain weigher/sacker were accessory attachments that were purchased with this thresher. Keck-Gonnerman also had grass seed, pea hulling and clover hulling attachments available to fit this machine. (Keck-Gonnerman also made machines dedicated to pea hulling and clover hulling. The big difference was that a huller had two cylinders where a grain thresher had one.)
