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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7351169 | Utility machinery and associated control arrangements A power transmission device for utility machinery is disclosed, the device including: a) a sleeve supporting a first sheave member having a first face; b) a hub received through the sleeve and moveable axially in relation thereto, the hub supporting a second sheave ... | 04/01/2008 |
| 7276003 | Vertical band saw machine with a speed ratio varying device A vertical band saw machine includes a first transmitting shaft driven by a drive force of a motor, a second transmitting shaft journaling a lower blade mounting pulley for rotating an endless band saw blade, and a speed ratio varying device coupling the transmittin... | 10/02/2007 |
| 7235026 | Utility machinery and associated control arrangements A method is provided for bearing a pitch or grip of a belt running between a pair of opposing faces of respective first and second sheave members of a power transmission device. The method includes moving the second sheave member axially in relation to the first she... | 06/26/2007 |
| 6915726 | Wood-turning lathe A wood-turning lathe includes a spindle and a drive shaft journalled to a headstock housing. A motor is mounted in the headstock housing, and includes a rotor. A torque converter includes a first wheel that co-axially surrounds the spindle and that is securely coupl... | 07/12/2005 |
| 6578455 | Wood lathe with an output shaft and an output shaft-driving source that are disposed respectively on two ends of a table A wood lathe includes first and second seats disposed respectively and fixedly on two ends of a table. A first driving device includes a motor disposed on the second seat, an outer tube fixed between the first and second seats, and a rotating inner rod jo... | 06/17/2003 |
| 6557444 | Wood lathe with a stepless speed-adjusting unit for a workpiece A wood lathe includes a driving pulley unit disposed around a rotating inner rod, a driven pulley unit disposed around an output shaft that is used to rotate a workpiece, a V-belt unit trained on the driving and driven pulley units, and a speed-adjusting ... | 05/06/2003 |
| 6203458 | Speed adjusting device for a drill press A speed adjusting device for a drill press includes a first variable pulley mounted to the motor shaft and a second variable pulley mounted to the output shaft with a belt connected between the two variable pulleys. A pressing member is mounted to the sec... | 03/20/2001 |
| 5662538 | Device for adjusting pitch diameter of sheave of variable speed mechanism A device for adjusting the sheave pitch diameter of a variable speed mechanism includes an output shaft, a linking member, an upper urging rod, a lower urging rod, and a motor. The device can be operated easily and safely such that the speed changing info... | 09/02/1997 |
| 5186088 | Wood lathe with sliding, horizontally-rotatable headstock and variable speed drive Disclosed is a system for forming a variable speed pulley, a variable speed drive system, a variable speed lathe, a lathe having a slidable, horizontally-rotatable headstock, and a variable speed lathe having a slidable, horizontally-rotatable headstock.... | 02/16/1993 |
| 4624167 | Blade speed control for a band saw A mechanical, infinitely variable blade speed drive for a band saw is provided with a speed control which includes a variable pitch drive pulley with axially adjustable sheave spacing to vary the drive ratio between the drive pulley and the driven pulley ... | 11/25/1986 |
| 4303404 | Infinitely variable ratio transmission apparatus A variable ratio transmission apparatus for converting an input torque at a first RPM to an output torque at a second RPM includes a pair of driving discs disposed on an input drive shaft and in spaced parallel ralationship thereto, a pair of driven discs... | 12/01/1981 |
