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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7901200 | Molding apparatus A lower punch is arranged to be inserted into a cavity of a die from a lower side of the die. A upper punch is arranged to be inserted into the cavity from an upper side of the die to compact the powder filled in the cavity, in cooperation with the lower punch. A fe... | 03/08/2011 |
| 7427195 | Device for separating and transporting a sized portion of material in a plant for forming articles by compression moulding A method for separating a portion of extruded material from the continuous strip leaving an extruder, consisting of passing in front of the extrusion nozzle withdrawal means associated with at least one cutting means; said withdrawal means and said at least one cutt... | 09/23/2008 |
| 7229264 | Platen with self-cleaning exhaust holes and multi-opening press utilizing same A platen press for pressing loose wood-based material into structural panels at high temperature while exhausting steam generated in the process through vents distributed across the face of a platen to thereby produce an improved product. The vents are periodically ... | 06/12/2007 |
| 7220119 | Pre-stressed tie rod and method of manufacture The present invention relates to a pre-stressed tie rod and method of manufacture. The pre-stressed tie rod can be used on injection molding machines to increase the length of the tie rod and movement of the platen, wherein the tie rods are loaded to restrict mold s... | 05/22/2007 |
| 7156643 | Machine for forming miscellaneous articles, such as caps, by compression molding Machine for forming caps by compression molding comprising: a first carousel rotating about a central axis and provided peripherally with a plurality of compression molding units mounted equidistant from each other and from the axis of rotation, said units comprisin... | 01/02/2007 |
| 7150617 | Multiple position press A modular press assembly for performing multiple position pressing with a single press. The modular press assembly includes a floating mount attached to the upper platen of the press, a hydraulic cylinder, and a press ram coupled to the cylinder which automatically ... | 12/19/2006 |
| 7132072 | Method for producing multi-cored molded article To manufacture a multi-core press-coated molded product efficiently and in a single step from molding materials, namely, powder or granular particles, a punch has been devised that is characterized in that the punch, consists of a center punch whose tip portion is s... | 11/07/2006 |
| 6787082 | Compressing mallet with coating treatment The punch coated with Cr-Dopé-N is advantageous as a punch for preparing tablets containing an acidic substance or an adhesive substance and is excellent in corrosion resistance and releasing property. ... | 09/07/2004 |
| 6780362 | Modular mold and die assembly Modular die or mold assemblies comprise a platform, and at least one die or mold unit which is releaseably connected to the platform. The invention permits rapid changing of molds or dies, especially in the manufacture of detergent bars, such as soap bars. Surface o... | 08/24/2004 |
| 6749416 | Die for a rotary compression press A die for a rotary compression press, comprising a die holder axially supported in a guide bore and a die insert which is seated in the end-side bore of the die holder via a trunnion-shaped projection and is adapted to be mounted via releasable fastening means, wher... | 06/15/2004 |
| 6585507 | Sampling die and press for compaction of powder sample A sampling die and press for compaction of a powder sample are disclosed. The die is designed to serve both as a mold for compacting a powder sample into a tablet or caplet and as a container for sampling the powder that is to be compacted. The die is mad... | 07/01/2003 |
| 6422853 | Chain die assembly A chain die assembly for producing candy includes a plurality of first chain links each including a cutting edge, a plurality of second chain links each including a cutting edge and a common longitudinal center plane. A plurality of guiding housings is ar... | 07/23/2002 |
| 6337042 | Press machine and method of manufacturing pressed products An object is to reduce mutual interference between a plurality of sets of molds coupled to a common frame stand to improve the processing accuracy. A plurality of sets (e.g. two sets) of molds are driven by servo motors (6a, 6b). The servo motors (6a, 6b)... | 01/08/2002 |
| 6141991 | Press molding apparatus for glass optical elements and molding method for glass optical elements Disclosed are a molding apparatus for glass optical elements a plurality of molds each constituted of an upper mold and a lower mold, a matrix supporting the molds, and heating means wound around the matrix for heating the molds, wherein the matrix extend... | 11/07/2000 |
| 6099772 | Undercut split die This invention relates to a device to compact parts with an undercut out of powder material having an upper die moveable relative a lower die, at least one upper punch associated with the upper die for relative movement therebetween, at least two lower pu... | 08/08/2000 |
| 5783228 | Molded and laminated curved surface composites A molding press for simultaneously molding a product and laminating a pattern layer to the surface of the molded product comprising a bottom mold plate, a top mold plate, a mold ring element surrounding the mold plates and moveable independently of the to... | 07/21/1998 |
| 5686118 | Apparatus for compressing-forming powder An apparatus has an apparatus body and a support shaft rotatably supported on the apparatus body. An intermediate plate is provided at an intermediate height of the apparatus body with a plurality of dies arranged in a substantially parallel plane where c... | 11/11/1997 |
| 5648033 | Method and apparatus for retaining a formed compression dosage unit within a die cavity A method and apparatus is provided for the formation of a tablet from tableting feedstock. An elongate die is provided which has a cavity defined by an inner wall. A pair of die punches are insertably positioned within the cavity. The die punches include ... | 07/15/1997 |
| 5421714 | Device for aligning and bending individual round elongated dough pieces A device (24) for aligning with a feeding line (8) of a moving transfer conveyor (3) and for bending a round elongated dough piece (13) randomly placed on the moving transfer conveyor for transfer, including a pair of stoppers (26, 26) symmetrically arran... | 06/06/1995 |
| 5378416 | Method of and system for manufacturing powder moldings A method of manufacturing a powder molding having a undercut portion, etc. comprises filling a space of a die with a powder, pressing the powder in the space of the die by punches inserted therein through an opening of the die, and withdrawing a undercut ... | 01/03/1995 |
| 5370760 | Method of manufacturing multilayer ceramic electronic component A ceramic laminate, which is obtained by stacking ceramic green sheets provided with conductor films distributed on central portions along surface directions thereof, is charged in a die assembly. The die assembly includes an upper punch for pressing a fi... | 12/06/1994 |
| 5219591 | Apparatus for forming concrete blocks Apparatus for continuously forming concrete blocks or pavers comprises a frame for defining a supporting structure with a mold box flexibly mounted thereon, the mold box having internal cavities contoured to define preselected block patterns, wherein a fe... | 06/15/1993 |
| 5071607 | Method and apparatus for forming a hole in a drug dispensing device A press is provided for simultaneously pressing and piercing an object. The piercing means moves from a sheathed to unsheathed position in response to compressive pressure. The piercing means are normally biased in the sheathed position by a bias means. M... | 12/10/1991 |
| 5059110 | Apparatus for forming concrete blocks having plural separately driven vibrator sets Apparatus and method for continuously forming concrete blocks or pavers comprises a frame for defining a supporting structure with a mold box flexibly mounted thereon, the mold box having internal cavities contoured to define preselected block patterns, w... | 10/22/1991 |
| 4988275 | Rotary pelletizing machine A rotary pelletizing machine includes a housing and a pelletizing assembly removably secured in the housing and including a rotatable matrix disc, upper and lower punches supported in the matrix disc for joint rotation therewith and axial displacement rel... | 01/29/1991 |
| 4933119 | Molding apparatus and method Apparatus and method for molding a plurality of articles having various masses and shapes wherein a parison mass is injected at constant back pressure through a time controlled valve from a supply of molten molding material at predetermined temperature an... | 06/12/1990 |
| 4740147 | Ultra-high pressure solid pressing machine An ultra-high pressure solid pressing machine of the type having a pair of upper and lower platens mounted in a press frame and movable relatively toward and away from each other, a mold unit interposed between the upper and lower platens and including at... | 04/26/1988 |
| 4588539 | Process and press with a controlled pressure system A press for forming sheet material into a shaped article comprising a frame, first and second complementary dies, a cam supported by the frame for reciprocally moving the first die along an axis between a first position axially spaced from the second die ... | 05/13/1986 |
| 4569649 | Machine for making earth blocks A machine which makes building blocks from earth efficiently and rapidly has a pair of block forming molds at each end of the machine for simultaneously forming blocks at each end by means of a pair of rams. The hydraulic cylinder which actuates the two r... | 02/11/1986 |
| 4490103 | Press with easily exchangeable proof plates In a press operable for movements of proof plate exchangeably mounted on an end of a press die into and out of a mold, and wherein the proof plate normally does not exceed a position wherein its topmost portion is at most flush with a topmost portion of t... | 12/25/1984 |
| 4383810 | Forming concrete support chairs The apparatus has a plurality of open-ended female dies with a movable lower male die positioned in the lower end of each one. A supply box is shiftable over the female dies to deposit concrete therein, following which a plurality of upper male dies are m... | 05/17/1983 |
| 4371328 | Apparatus for making composition logs by compressing particles Compacting apparatus for making composition logs from particulate matter includes a compression chamber having a precompression chamber axially aligned on one end of the compression chamber and a feed mechanism for feeding particulate matter for loading i... | 02/01/1983 |
| 4371327 | Apparatus for use in producing cup-shaped pastries Apparatus for producing pastry comprises a plate having a plurality of mold cavities arranged in a regular pattern. Each of the cavities has at its upper rim an upwardly projecting cutting edge. A sheet of dough is laid over the plate and pressed toward i... | 02/01/1983 |
| 4314799 | Compression molding machine for organic thermoplastic materials This invention provides a high output machine for effecting the production of organic thermoplastic articles by the compression molding technique. A plurality of molding members having open top molding cavities are movable around a horizontal closed loop ... | 02/09/1982 |
| 4298327 | Device for the manufacture of rod-shaped objects of dough-like, particularly edible, material A frame comprising crossplates 8 and 13 coupled and spaced apart by coupling rods 10 (FIG. 2) faces, by the crossplates 8 and 13, opposite ends of aligned plunger pairs 7 and 16, there being a plurality of said pairs associated with respective openings, i... | 11/03/1981 |
| 4259054 | Brick press frame having prestressed columns A press is provided for forming articles from compressed refractory material such as bricks, the press including a press bed, a crown spaced from the press bed, and a plurality of prestressed support columns rigidly supporting the press bed and the crown ... | 03/31/1981 |
| 4222726 | Brick press including a removable plunger assembly and method for removing the plunger assembly A press is provided of the type used in compressing refractory material at high pressures in the manufacture of bricks and the like. The press includes a bed, columns supported by the bed, and a mold table slidably supported on the columns, the mold table... | 09/16/1980 |
| 4220442 | Press apparatus including plunger adjustment means The invention includes apparatus for use in molding refractory material and is useful, for example, in molding bricks and other similar products. The apparatus includes a mold table supported by a plurality of vertical columns, the mold table being suppor... | 09/02/1980 |
| 4153399 | Multiple punch tool set for powder compacting press A punch and die set for operation by the ram of a powder compacting press, comprising at least three concentrically disposed telescopic punches independently reciprocable within a single die cavity. Each punch is separately supported by a punch holder pla... | 05/08/1979 |
| 4000231 | Method for compacting powders Method of using an opposed ram hydraulic press for compressing powder in a die to form a compact. The press including hydraulic and electrical control circuits for decompressing the compact progressively and smoothly to a relatively low punch hold down fo... | 12/28/1976 |
