...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4166403 | Method of making a rigidly supported molded plastics material punch guide and stripper A punch guide and stripper is molded from plastics material to the exact configuration of the punch and is supported and reinforced by a rigid punch receiving member to engage a workpiece around the slug to be punched therefrom and strip the punch from th... | 09/04/1979 |
| 4136390 | Grinding control system for forming non-circular punching tools Grinding apparatus and control system for forming non-circular punching tools comprising a grinding wheel having a cylindrical grinding surface, a rotary table with its axis parallel to the grinding wheel axis and carrying orthogonally movable slides such... | 01/23/1979 |
| 4127279 | Tool holder A tool holder includes a shank that has an axial passage therethrough for conducting coolant. The end of the shank remote from the cutting tool has a hollow stop screw which determines the effective length of the tool holder and which contains a check val... | 11/28/1978 |
| 4114246 | Method of and means for making tuned viscous torsional vibration dampers A method of making a tuned viscous torsional vibration damper assembly of the type having supporting disk means with a radially outwardly extending circular body and a radially inner hub portion adapted to be secured to a rotary member such as a crankshaf... | 09/19/1978 |
| 4115858 | Machine tool controller employing microprocessor system for controlling Z axis A machine tool controller, for automatically controlling the Z axis operations of a machine tool, along a direction parallel with the axis of a tool-holding spindle, includes a system for executing programs in accordance with data which is manually entere... | 09/19/1978 |
| 4112025 | Method of and apparatus for jet aeration A method of and apparatus for transferring gas to liquid, for example, air to liquid in an aeration process. Included is a novel combination air-liquid conduit and a method of making same, a novel jet aerator wherein the outlet section is shortened to inc... | 09/05/1978 |
| 4105094 | Single line lubricant reversing feeder A single line lubricant reversing feeder for use in a centralized lubricating system, the feeder having a valving piston and a metering piston, by virtue of the movement of which a measured portion of the lubricant supplied to the feeder is delivered to a... | 08/08/1978 |
| 4100614 | Method for polymer dissolution A method and apparatus for dissolution of comminuted organopolymeric materials such as water and waste water flocculant polymer, in which the polymer is educted into a series of ejector mixers and into a mixing zone.... | 07/11/1978 |
| 4099597 | Lubrication pump A lubrication device employing a reciprocable plunger, as the actuating member, which is driven by a rotatable cam member through a pivoted rocker arm engaged with the plunger and having roller means engaging the cam, with the axis of the plunger, respect... | 07/11/1978 |
| 4098373 | Tuned torsional viscous dampers A tuned torsional viscous damper has mounted on a flat supporting disk a ring-shaped inertia mass comprising a pair of complementary stamped heavy gauge annular sheet metal inertia plates each of which has a radially outer axially facing annular portion i... | 07/04/1978 |
| 4096774 | Turret punches A machine tool, such as a turret punch, having one or more individual tools positioned in a tool holder member attachable to the turret and easily removable therefrom whereby tools are changed by changing turret tool holder members rather than by changing... | 06/27/1978 |
| 4096563 | Machine tool control system and method A control system having a stored program digital computer for transmitting commands to digital servos for one or a plurality of punch presses; for changing new commands to correct for preceding servo errors and/or mechanical tolerance errors in the servos... | 06/20/1978 |
| 4095916 | Timed intermittent air propelled liquid coolant system for machine tools Liquid coolant and lubricant is intermittently pressure fed through a hollow drill stem to the tip of a drill, preferably a spade drill, against the workpiece by compressed air from the conventional machine shop air line which is fed over and released fro... | 06/20/1978 |
| 4094218 | Hydraulic system for tensioning band saw blades A closed hydraulic system for band saws transmits manually actuated control of the saw blade tension, provides for easy and remote reading of blade tension, instantly stops rotation of the upper saw blade wheel in case of blade breakage, shuts off the mot... | 06/13/1978 |
| 4084353 | Spade drill sharpening fixture A fixture for holding a spade drill on a reciprocable grinder table during the sharpening thereof comprises a base for resting on the grinder table, a rocker supported on the base and pivotable to various fixed positions for providing a selected dip angle... | 04/18/1978 |
| 4084349 | Shape grinder and method Grinding apparatus for forming noncircular punching tools comprising a grinding wheel having a cylindrical grinding surface, a rotary table with its axis parallel to the grinding wheel axis and carrying orthogonally movable slides such that one slide at a... | 04/18/1978 |
| 4082472 | Floating tool holder A Floating Tool Holder includes a shank having an annular sleeve secured to one end thereof, there being a tool chuck assembly retained between the end of the shank and a flange on the sleeve, driver means for transmitting rotary motion from the shank to ... | 04/04/1978 |
| 4080855 | Tip table worktable section A worktable for use in association with machine tools is illustrated which has a section including a side edge of the worktable hingedly connected to the table supporting member whereby the section is tiltable under power to automatically unload a workpie... | 03/28/1978 |
| 4080090 | Tap driver assembly A Tap Driver Assembly for use between a spindle that is adapted to provide a coolant and a tap that is adapted to conduct such coolant therethrough, the tap driver assembly including a body in which a nose is slidably guided, a collet clamped by a nut in ... | 03/21/1978 |
| 4070831 | Hydraulic drive circuit for machine tools A hydraulic drive circuit for machine tools, such as power shears, press brakes, and the like having hydraulic cylinder reciprocated members, controls fluid flow to and from the hydraulic cylinders to automatically move and hold the member in an idle posi... | 01/31/1978 |
| 4060341 | Automatic auxiliary jet sump pump An auxiliary jet sump pump, particularly for use with a main conventional electrical sump pump or the like, as a substitute pump in the event the main pump is inoperative, or as a supplemental pump in the event the capacity of the main pump is exceeded. T... | 11/29/1977 |
| 4047858 | Stuffing box for high density screw pump and pump incorporating same An axially fixed, radially limitedly movable stuffing box assembly including mounting means therefor. The stuffing box is adapted to have means for continuously flushing its bushing during operational rotational movements of a shaft functionally engaged t... | 09/13/1977 |
| 4046230 | Tuned torsional viscous dampers Elastic tuning, spacing and sealing rings substantially fill annular grooves in a ring shaped inertia mass and face toward and into engagement with the body of supporting disk means extending radially into an annular working chamber defined by the inertia... | 09/06/1977 |
| 4041817 | Punch holder and stripper combination A punch holder and stripper assembly is shown in which a punch holding body is provided with a reduced outer diameter boss section projecting therefrom terminating in an end face which has a bore opening thereinto which receives the punch, the punch proje... | 08/16/1977 |
| 4040764 | Tool holder A tool holder includes a shank adapted at one end to hold a tool and to be clamped in a machine tool at its other end. The shank has a portion that provides accurate radial location, and also has means which are adjustable in order to provide accurate axi... | 08/09/1977 |
| 4031787 | Punch and stripper assembly A Punch and Stripper Assembly for use in a punch press includes a punch with a shoulder at an intermediate portion thereof, a head threaded onto an end of the punch for being engaged by the ram of the press, a compression spring engaging the head, a washe... | 06/28/1977 |
| 4019983 | Disinfection system and method A rapid and efficient method for disinfection of waste liquid such as sewage effluent by means of a fluid disinfecting agent, (e.g. ozone or chlorine) in which the disinfecting agent and all of the waste liquid to be treated pass through a turbulent flow ... | 04/26/1977 |
| 4017223 | Axial thrust adjustment for dual screw-type pump A dual screw-type pump is provided with a means for balancing the resultant dynamic axial thrust on the screw assemblies during operation of the pump. The resultant thrust on each assembly is absorbed in part by a circular piston on the assembly near the ... | 04/12/1977 |
| 4010969 | Impact resistant lightweight, low cost automobile bumpers and method of making same Automobile bumpers formed from rolled sheet steel and each having a cross-sectional profile designed to carry impact loads without additional reinforcements, and which are selectively hardened to withstand impact of a high order of magnitude without damag... | 03/08/1977 |
| 4007653 | Punching device with punch retainer A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit and such assembly includes means by which such assembly i... | 02/15/1977 |
| 3999664 | Tool changer with dual axis of rotation An automatic tool transport mechanism for a machine tool having an operating axis, in which a tool is to be transferred between the operating axis of such a machine and the storage structure, with the tool being supplied to the operating station on such o... | 12/28/1976 |
| 3995717 | Sequential lubrication distributor and lubricant injector therefor A lubricant distributor system including a plurality of piston cylinder lubricant injector units constructed and arranged so that the pistons thereof move in sequence from retracted positions to lubricant displacement positions to expel a given quantity o... | 12/07/1976 |
| 3990140 | Vertical tool changer to adapter holding mechanism An automatic tool changer mechanism for a machine tool in which the tool is supported in an adapter having a tapered spindle-engaging end and an opposite tool-engaging end, and provided with a generally annular-shaped flange, intermediate its ends, having... | 11/09/1976 |
| 3975817 | Fluid-actuated tool changer with dual axis of rotation An automatic tool transport mechanism for a machine tool having an operating axis, in which a tool is to be transferred between the operating axis of such a machine and the storage structure, with the tool being supplied to the operating station on such o... | 08/24/1976 |
| 3976005 | Printing plate for use with lockup means A printing plate and saddle are provided for a press roll wherein the printing plate, at each end, has a series of sheer-forms which define slits and indented formations, the slit-edge of the formation being engageable with radial face means on the saddle... | 08/24/1976 |
| 3975109 | Z-axis drive assembly A Z-axis drive assembly for a turret machining center incorporates a variable speed DC motor mounted on a vertically adjustable carriage and connected through a harmonic drive unit to rotate a pinion. The pinion forms part of a rack and pinion mechanism, ... | 08/17/1976 |
| 3972387 | Lubrication system with quick-change supply reservoir A reservoir-type pump structure for liquid and viscous materials, particularly lubricating materials such as lubricating oils and greases, in which the reservoir is formed as an independent unit readily detachable from the pump structure or attached there... | 08/03/1976 |
| 3972744 | Method of and means for making lightweight, low cost impact resistant bumpers Bumper bars are shaped from easily workable relatively thin gauge sheet or strip steel into bumper bar shell profile provided with a horizontally elongated body portion and spaced apart integral upper and lower flanges of substantial width extending freel... | 08/03/1976 |
| 3970009 | Fluid railroad passenger car suspension A railroad passenger car suspension system in which a car body is supported on trucks in the running mode through rotary hydraulic actuators. All of the necessary conditions for passenger comfort, increased train speed and safety are met. The level of cen... | 07/20/1976 |
| 3961549 | Die changing turret table segment A turret worktable for a turret punch machine tool with the table aligned adjacent to the top of the die turret, the dies extending below the table top. The top has a section thereof extending from an edge of the table to the edge of the lower die turret,... | 06/08/1976 |