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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4074416 | Mirror and method of making same A mirror, and method of making same, is disclosed. The mirror includes a metallic base material having a low coefficient of thermal expansion, an intermediate layer bonded to the base by a plasma spray process and a reflecting surface overlying the interm... | 02/21/1978 |
| 4071980 | Honing machine provided with a power controller The present disclosure relates to a honing machine in which there is incorporated a power control circuit for controlling the power to be supplied to a cutting in device so as to stabilize the grinding force to be consumed in a grinding wheel. The power c... | 02/07/1978 |
| 4036607 | Method and relevant apparatus to check the rotation of mechanical workpieces being machined on grinders A method for checking the rotation of mechanical workpieces which includes the steps of measuring the workpiece size, processing the measuring signals occurring to generate at least one signal responsive to the measurement of size variations of the workpi... | 07/19/1977 |
| 4027245 | Numerically controlled machine tool In a numerically controlled machine tool, for example a grinder, a workpiece to be machined is rotated and is displaced parallel to its axis of rotation and coders provide signals corresponding to the workpiece rotation and the workpiece displacement. The... | 05/31/1977 |
| 4025764 | Multi pass machining with control of feed increments In a machine tool control system of the type wherein repeated machining passes are effected with progressively reducing increments of in-feed, each increment is stored, e.g. digitally, and is iteratively combined with a modifying constant to form the new,... | 05/24/1977 |
| 4020598 | Method of measuring the radius of a rotating grinding wheel and device therefor A method of and a device for measuring the radius of a grinding wheel during the rotation thereof, said grinding wheel being supported by at least one pivoting arm of predetermined length and urged against an object to be ground having predetermined dimen... | 05/03/1977 |
| 4018010 | Method and relative apparatus for controlling and regulating the working cycles of a machine tool A method for controlling and regulating the working cycles of a machine tool on a workpiece, including the steps of measuring the workpiece during the machining and programming the feed speed of the tool depending on another variable quantity, which fores... | 04/19/1977 |
| 4014142 | Method and apparatus for grinding at a constant metal removal rate A method and apparatus for conditioning steel by grinding at a constant metal removal rate by monitoring net power and the normal force between the wheel and the workpiece, and adjusting the normal force to achieve a given, predetermined metal removal rat... | 03/29/1977 |
| 3986305 | Method of grinding of gear teeth For grinding the flanks of gear teeth to modify an involute tooth profile determined by the generating method of grinding, the tooth flank area is associated with a system of co-ordinates and a grinding programme is employed that specifies involute modify... | 10/19/1976 |
| 3983376 | Control device for a machine tool An apparatus for controlling a machine tool which includes a measuring head for measuring a dimension (i.e. a diameter) of a workpiece, a detector for detecting and holding the maximum dimension measured by the measuring head, a circuit for determining th... | 09/28/1976 |
| 3970830 | Computer controlled machine tool contouring system A computer controlled machine tool contouring system having a cutting element which is positioned relative to a workpiece support table. An actuating means controls the workpiece support table to synchronously rotate about a first axis and slide along a s... | 07/20/1976 |
| 3965621 | Control system for grinding machine This disclosure relates to a system which continuously monitors and displays the distance between the cutting edge of a grinding wheel and a lower reference plane. A finish size of a workpiece may be set into the system and the grinding wheel is downfed i... | 06/29/1976 |
| 3958370 | Single slide grinding machine with means for selectively producing a reciprocation of said slide A single-slide, mechanically and electrically programmed grinding machine comprising a rigid enclosed base, a fixed workhead assembly on the base, a pair of parallel slidebars mounted on the base, and a wheelslide assembly mounted on the base for longitud... | 05/25/1976 |
| 3951563 | Manufacture of vehicle disc wheels A method of truing a spigot located disc wheel comprising clamping the wheel between two adaptors, rotating the wheel, measuring the radial displacements at each bead seat, and operating a borer in response to the displacements to bore a central spigot ho... | 04/20/1976 |
| 3948004 | Apparatus for producing an electrical removal signal corresponding to lateral and radial force loads on a tire An apparatus whereby the lateral and radial forces arising in a loaded tire -- either standing or rolling -- are detected and signals produced to control grinding units as a function of both forces to remove material and reduce or eliminate non-uniformiti... | 04/06/1976 |
| 3942287 | Contour grinders A contour grinder having a grinding wheel that forms a workpiece into a desired contour by directly controlling the movement of the grinding wheel with a motor operated by numerical control. The grinding wheel has an arched shaped surface on the periphery... | 03/09/1976 |
| 3932960 | Single slide grinding machine A single-slide, mechanically and electrically programmed grinding machine comprising a rigid enclosed base, a fixed workhead assembly on the base, a pair of parallel slidebars mounted on the base, and a wheelslide assembly mounted on the base for longitud... | 01/20/1976 |
