Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 7318691 | Tool apparatus for milling machine The present invention provides an automated-torque controlled tool for attachment to a milling machine. The tool comprises an elongated hollow housing defined by a neck section, a middle section, and a bottom section. The neck section is adapted to engage a spindle ... | 01/15/2008 |
| 7165966 | Injection molding machine There is provided an injection molding machine provided with an injection mechanism that enables a high-speed injection. The injection molding machine includes: a heating barrel for melting and kneading a resin fed from a hopper, said barrel having an injecti... | 01/23/2007 |
| 7048479 | Machine tool apparatus A machining tool has a tool holder aligned on an axis of rotation β of its shaft, which axis β is oblique to the axis of rotation of a spindle at a predetermined angle θ. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transm... | 05/23/2006 |
| 5538371 | Tapper mechanism A tapper mechanism having (i) a rotatable tapper body with a clutch, (ii) a driven shaft having a portion rotatably held coaxially in the tapper body for limited axial motion therein, (iii) an engageable claw connected from the driven shaft for selective ... | 07/23/1996 |
| 5096343 | Internal thread forming apparatus with an automatic rotational direction change controller An internal thread forming apparatus includes a housing body fixed on a machine tool, a driving spindle connected to the rotatable main shaft of the machine tool and rotatable at the same speed as that of the main shaft, a movable body movable vertically ... | 03/17/1992 |
| 4879929 | Tapper/threader assembly A tapper/threader assembly for use in a lathe is disclosed. The assembly has a piston member mounted for reciprocal movement with a sleeve housing, a shank member is connected to the piston member and an end extending from the housing. A mounting shaft fo... | 11/14/1989 |
| 4861201 | Quick change adapter with a torque limiter for a tapping chuck The object of the invention relates to the technical branch of machine-tool accessories. The adapter features a torque limiter comprising a driving means (2) provided with a plurality of radial openings (2d) and axial openings (2e) which communicate betwe... | 08/29/1989 |
| 4832542 | Clutching means adapted for tapping attachment Clutching device particularly adapted for use in tapping attachments. The clutch is of the type having axial aligned driving and driven elements. The invention is illustrated in a reversible tapping attachment. In a preferred form the driving element is i... | 05/23/1989 |
| 4722643 | Tapping attachment adapted for numerical computer control A tapping attachment particularly adapted for use with machines under numerical computer control. The attachment embodies tension cushion for the spindle by way of a tension spring as well as compression cushion for the spindle. The compression cushion is... | 02/02/1988 |
| 4530625 | Hydraulic stop An improved hydraulic stop for use with drilling and countersinking tools. The stop limits the penetration of the tool into the workpiece by dwelling at a pre-set depth while the machine spindle continues to travel (feed) through a hydraulic override syst... | 07/23/1985 |
| 4288183 | Tool holder or spindle This disclosure relates to a tool holder including a driving cylinder, a driven cylinder reciprocatable and rotatable within the driving cylinder and attachable with a tool, first threaded means reciprocatable and rotatable together with the driven cylind... | 09/08/1981 |
| 4274768 | Tapping spindle This disclosure relates to a tapping spindle including an automatic depth control. The spindle includes coaxial, telescoping driving and driven cylinders, and axial slot-like openings are formed in the cylinders. A slidable roller fits in the openings and... | 06/23/1981 |
| 4090806 | Tapping spindle having automatic depth control A driven cylinder is rotatably and reciprocatably mounted within a rotatable driving cylinder open at one end. The driving cylinder has a plurality of axial slots formed in its side wall. A clutch sleeve is secured to the driven cylinder inside the drivin... | 05/23/1978 |
| 4081873 | Self-decoupling tap and die holder The holder is intended for fixed application to the tail stock of a lathe, or equivalent machine tool, to optionally mount a die or tap for externally or internally threading a workpiece carried on the rotating head-stock end of such machine tool. Thus mo... | 04/04/1978 |
| 4031584 | Threading attachment for turning machines An improved threading attachment for turning machines incorporates a carrier for holding a tool such as a tap, a stationary supporting arbor and a sliding spindle extending between the arbor and carrier in coaxial relationship with the tap. The spindle sh... | 06/28/1977 |
| 4029429 | Ball drive non-reversing tapping attachment The invention is an improved coupling or clutching means for driving between axially aligned rotating parts and is particularly adaptable in non-reversing tapping attachments. The attachment can, however, be driven in the reverse direction. Clutch drive m... | 06/14/1977 |
| 4006994 | Tap chucking means A tap chucking means is provided which is adapted to automatically stop rotation of a tap at a predetermined depth and to pull the tap out from the work by reversing the rotation of the spindle. A cylindrical body has a bore in one end in which a socket s... | 02/08/1977 |
