公开(公告)号：GB190828509A

公开(公告)日：1909-12-31

申请号：GB190828509D

申请日：1908-12-31

Applicant: STEWART CHARLES HENRY

Inventor： STEWART CHARLES HENRY

Abstract: 28,509. Stewart, C. H. Dec. 31. Lead salts; calcium salts; sodium salts; stannates. -Tin alloys containing silver are treated to separate the metals by smelting with oxidized lead material so as to remove the tin as fusible stannate of lead. Other bases such as lime or soda may be present, and these also form stannates.

公开(公告)号：GB190828508A

公开(公告)日：1909-12-31

申请号：GB190828508D

申请日：1908-12-31

Applicant: STEWART CHARLES HENRY

Inventor： STEWART CHARLES HENRY

Abstract: 28,508. Stewart, C. H. Dec. 31. Calcium salts; sodium salts; stannates.-Alloys of tin and copper are treated to separate the metals by smelting with material adapted to supply oxygen to the tin, sulphur to the copper and a base to the tin oxide, for example a sulphate of calcium or sodium, so as to obtain a stannate or the like of the base and a copper matte.

公开(公告)号：CA76535A

公开(公告)日：1902-07-01

申请号：CA76535D

申请日：1902-06-12

Applicant: STEWART EDWARD A ,  STEWART CHARLES

Inventor： STEWART EDWARD A ,  STEWART CHARLES

公开(公告)号：CA68975A

公开(公告)日：1900-10-12

申请号：CA68975D

申请日：1900-06-20

Applicant: STEWART CHARLES E

Inventor： STEWART CHARLES E

公开(公告)号：GB189600477A

公开(公告)日：1896-03-21

申请号：GB189600477D

申请日：1896-01-07

Applicant: STEWART CHARLES NIGEL

Inventor： STEWART CHARLES NIGEL

公开(公告)号：NO309366B1

公开(公告)日：2001-01-22

申请号：NO874586

申请日：1987-11-03

Applicant: STEWART CHARLES

Inventor： STEWART CHARLES

IPC: B21C20060101 ,  B21C23/00 ,  B21C23/20 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：RU2076007C1

公开(公告)日：1997-03-27

申请号：SU4356549

申请日：1987-03-04

Applicant: STEWART CHARLES L

Inventor： CHARLZ L STYUART

IPC: B21C20060101 ,  B21C23/20 ,  B21C23/00 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：FI97450B

公开(公告)日：1996-09-13

申请号：FI883973

申请日：1988-08-26

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: B21C23/00 ,  B21C20060101 ,  B21C23/20 ,  B21C23/21 ,  B21C25/00 ,  B21C33/00 ,  B21C35/04 ,  B21C35/06

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container. An elongated stem having an axial passage is moved into the throughbore of the container to press the die toward the bolster, causing the billet to be extruded through the die to create an extrusion product which exits the container through the axial passage in the stem, while extrusion of the billet through the diametrical clearance between the pressure disc and the container is substantially avoided.

公开(公告)号：DE69024059T2

公开(公告)日：1996-07-18

申请号：DE69024059

申请日：1990-09-20

Applicant: STEWART CHARLES L

Inventor： STEWART CHARLES L

IPC: H04B7/26 ,  B21C23/08 ,  B21J5/10 ,  B21J9/04 ,  H03K5/156 ,  H04B20060101 ,  H04B3/60 ,  H04B7/00 ,  H04L5/14 ,  H04L12/40

Abstract: An apparatus for pre-piercing billets includes a generally cylindrical container for receiving and supporting a generally cylindrical billet, a mandrel bar mounted for axial movement along the axis of the cylinder for penetrating the billet, and a bolster for engaging the billet during penetration of the billet by the mandrel bar, wherein the bolster includes a bolster pin which is axially movable along the axis of the container, the bolster pin having an end which contacts the billet during penetration of the billet by the mandrel bar such that the billet deforms about the end of the bolster pin. A movable support is carried by the mandrel bar toward the billet during advancement of the mandrel bar prior to pre-piercing the billet, the movable support being configured to enter the generally cylindrical container to engage a portion of the container so as to provide additional structural rigidity to the mandrel bar to resist deflection of the mandrel bar during penetration of the billet.

公开(公告)号：RO110792B1

公开(公告)日：1996-04-30

申请号：RO92074590

申请日：1990-09-20

Applicant: STEWART CHARLES L

Inventor： CHARLES L STEWART

IPC: H04B7/26 ,  B21C23/08 ,  B21J5/10 ,  B21J9/04 ,  H03K5/156 ,  H04B20060101 ,  H04B3/60 ,  H04B7/00 ,  H04L5/14 ,  H04L12/40

Abstract: An apparatus for pre-piercing billets includes a generally cylindrical container for receiving and supporting a generally cylindrical billet, a mandrel bar mounted for axial movement along the axis of the cylinder for penetrating the billet, and a bolster for engaging the billet during penetration of the billet by the mandrel bar, wherein the bolster includes a bolster pin which is axially movable along the axis of the container, the bolster pin having an end which contacts the billet during penetration of the billet by the mandrel bar such that the billet deforms about the end of the bolster pin. A movable support is carried by the mandrel bar toward the billet during advancement of the mandrel bar prior to pre-piercing the billet, the movable support being configured to enter the generally cylindrical container to engage a portion of the container so as to provide additional structural rigidity to the mandrel bar to resist deflection of the mandrel bar during penetration of the billet.