B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
143/11
B27B 13/00 (2006.01) B23D 55/02 (2006.01) B23D 55/06 (2006.01) B23D 55/10 (2006.01) B27B 13/14 (2006.01)
Patent
CA 1176141
-2- ABSTRACT OF INVENTION The invention relates to existing band saws powered by elec- trical motors. Prior arts of band saws are commonly designed with two wheels as support and glide path for band saws blades. They were commonly revealed through patent search such as: #2, 711, 195 inventor John A. Hill; patent #3, 480, 051 inventor Charles E. Gray; patent #3, 902, 391 inventor Harold Bond; patent #3, 908, 501 inventor Tsuneo Aizawa; and patent #4, 128, 031 inventor Masso Sato. My invention incorporates four wheels to form the saw blade glide or travel path. Therefore, the primary object of my invention, having four wheels, eliminates the large bulky wheels used for achieving height and depth Depth being the distance between the blade and frame. Height being the distance between the working surface area and the bottom portion of the guard. Prior arts have 2-24" wheels on the large models to achieve a 22" width of cut. Being such a large wheel, it has to be con- structed of heavy and warp free material. It also has to be per- fectly balanced to achieve smooth operation and requires larger bearings. To turn all these heavy metal wheels leads to more pow- er input. Normally a band saw of this size will take 2 to 5 HP electric motor, thus, overall height and weight of saw is gross. To achieve height of cut at 12", this type of saw needs two wheels of 24", which equals 48" plus the 12" height of the cut plus the guard and base stand. Overall height of the saw would be approx- imately 8" tall and weighing in at 1000 lb. It is another primary object of present saw to reduce height, weight, bulk, and power consumed. It can also be used as wall mounted or on a fixed or mobile stand that could incorporate brake leaded casters, thus making it a more compact and lighter, yet achieving same cutting depth or clearance being as stated. My invention can be made much cheaper and novel for consumers, present saw having smaller wheel circumference delivers more torque power to the band saw blade when using 1/5 of power source that the prior arts use and also reducing the speed of band saw blade travel. Natural accuracy due to smaller circumference of wheels. It is another object of my present saw to also reduce friction, vibration, and high speed flexing of blade. Therefore, extending life of said blade, and almost entirely eliminating high speed noise frequencies, thus lowering the harmful noise syllables as noted in prior arts patent #4, 128, 031 inventor Masso Sato.
396551
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