Thomas Michael Callahan

US Patent:

6622776, Sep 23, 2003

Filed:

Dec 22, 2000

Appl. No.:

09/748584

Inventors:

Anthony J. Bauer - Edwardsville IL
Thomas R. Callahan - Maryville IL
Edward R. Hanson - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH
Brian A. Toussaint - Bolingbrook IL
Donald J. Lane - Cuba MO
Delbert E. Parrish - Florissant MO

Assignee:

Amsted Industries Incorporated - Chicago IL

International Classification:

B22C 910

US Classification:

164137, 164369

Abstract:

The number of cores used in casting sideframes is reduced. A pair of end cores and a center core are placed in a mold with cope and drag portions. Each core includes integrally-formed portions for defining portions of the interior surfaces of the sideframes. The integrally-formed portions may include a portion for defining the side window of the sideframe formed integrally with other portions, and may include a pedestal portion formed integrally with other portions. The integrally-formed portions may contact both the cope and drag portions of the mold. The end cores may include integrally formed core prints for supporting the core in the mold. The integrally-formed portions of the center core include connections that are formed integrally with the other portions. Molten metal is introduced into the mold to cast the sideframe.

US Patent:

6662853, Dec 16, 2003

Filed:

Mar 12, 2003

Appl. No.:

10/386793

Inventors:

Anthony J. Bauer - Edwardsville IL
Thomas R. Callahan - Maryville IL
Edward R. Hanson - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH
Brian A. Toussaint - Bolingbrook IL
Donald J. Lane - Cuba MO
Delbert E. Parrish - Florissant MO

Assignee:

Amsted Industries Incorporated - Chicago IL

International Classification:

B22C 910

US Classification:

164137, 164369

Abstract:

The number of cores used in casting bolsters and sideframes is reduced. End cores and a center core are placed in a mold with cope and drag portions. Each core includes integrally-formed portions for defining portions of the interior surfaces of the bolster or sideframes. The integrally-formed portions may include a portion for defining the side window of the sideframe formed integrally with other portions, and may include a pedestal portion formed integrally with other portions. The integrally-formed portions may contact both the cope and drag portions of the mold. The end cores may include integrally formed core prints for supporting the core in the mold. The integrally-formed portions of the center core include connections that are formed integrally with the other portions. Molten metal is introduced into the mold to cast the bolster or sideframe.

US Patent:

6823800, Nov 30, 2004

Filed:

Apr 2, 2003

Appl. No.:

10/405664

Inventors:

Thomas R. Berg - St. Louis MO 63122
Anthony J. Bauer - Edwardsville IL 62025
Thomas R. Callahan - Maryville IL 62062
Hector Chaidez - Marysville IL 62062
Ralph H. Schorr - Edwardsville IL 62025

International Classification:

B61F 300

US Classification:

1052061, 10519705

Abstract:

A cast metal sideframe for use in a railway car truck has a spring seat for supporting the springs of a spring set. The sideframe is molded using a core that includes a portion for defining the exterior surface of the spring seat. The core can be a single piece or multi-piece core. The spring seat includes a plurality of aerodynamically-shaped spring retainers formed on the top face spring seat. The aerodynamic shape of the spring retainers reduces the tendency for sand to swirl and create voids during formation of the sand core that is used to mold the sideframe. The aerodynamic shape may include forming at least some of the side walls of the spring retainers at an obtuse angle with the top face of the spring seat. The spring retainers may have concave top faces so as to reduce the volume of material comprising the spring retainers. Reducing material volume is beneficial for reducing shrinkage during cooling of the sideframe, thereby reducing the tendency for separation, tears and cracks to form on the top surface of the spring retainer.

US Patent:

59541148, Sep 21, 1999

Filed:

Apr 10, 1998

Appl. No.:

9/058608

Inventors:

Anthony J. Bauer - Edwardsville IL
Thomas R. Callahan - Maryville IL
Edward R. Hanson - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH
Donald J. Lane - Imperial MO

Assignee:

AMSTED Industries Incorporated - Chicago IL

International Classification:

B22D 3304

US Classification:

164137

Abstract:

Improvements in the method of making cast metal bolsters for railway trucks are disclosed. The bolster is cast in a mold using a one-piece center core. The center core has a first end inboard of the first outboard end of the mold and a second end inboard of the second outboard end of the mold. The one-piece center core extends from the first end across the center area of the mold to the second end. It has surfaces to define interior surfaces of the bolster top wall, bottom wall and side walls on both sides of the bolster central transverse plane and bolster central longitudinal plane. Two one-piece end cores are also used. Each one-piece end core has surfaces shaped to define the interior surfaces of the bolster top wall, bottom wall and side walls from a position inboard of one friction shoe pocket to the first outboard end of the bolster. Each has surfaces to define interior surfaces of the bolster top wall and bottom wall on both sides of the bolster central longitudinal plane and interior surfaces of the bolster side walls on both sides of the perpendicular bolster longitudinal plane.

US Patent:

63308622, Dec 18, 2001

Filed:

Mar 13, 2000

Appl. No.:

9/524469

Inventors:

Thomas R. Callahan - Maryville IL
Anthony J. Bauer - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH
Brian A. Toussaint - Bolingbrook IL

Assignee:

Citicorp USA, Inc. - New Castle DE

International Classification:

B61F 100

US Classification:

105226

Abstract:

An improvement in dead lever lugs for mounting on cast metal bolsters for railway trucks is disclosed. The bolster has two side walls. The side walls have angled portions that meet in radii along the junctures of the angled portions. The dead lever lug has two arms joined by a bridge section. Each of the arms has a mounting surface that is shaped to mate with the shape of one of the angled surfaces of the bolster. The mounting surfaces of the dead lever lug arms are separated by a gap. When the dead lever lug is mounted on the bolster, the dead lever lug straddles the juncture of the angled portions of the side wall. One mounting surface of each arm is positioned against one of the angled portions of the side wall and the gap overlies the juncture of the two angled portions of the side wall. With the dead lever lug of the present invention, no flat raised mounting area is needed on the side wall of the bolster.

US Patent:

57525641, May 19, 1998

Filed:

Jan 8, 1997

Appl. No.:

8/780546

Inventors:

Thomas R. Callahan - Maryville IL
Brian A. Toussaint - Lisle IL
Anthony J. Bauer - Edwardsville IL
Edward R. Hanson - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH
Donald J. Lane - Imperial MO
Delbert E. Parrish - Florissant MO

Assignee:

Amsted Industries Incorporated - Chicago IL

International Classification:

B22D 3304

US Classification:

164137

Abstract:

Improvements in cast metal sideframes and bolsters for railway trucks are disclosed, along with improvements in the processes of casting such products and the cores used in the casting process. In one aspect, the cores are consolidated to provide two one-piece end cores, a one-piece center core, and a bottom center core for the sideframe and two one-piece end cores and a center core for the bolster. The consolidated cores may include cores to define various bolt holes. In another aspect, various cores may be made with step joints for interlocking support without weight-supporting chaplets. In another aspect, a locator boss may be formed on one or more of the cores for proper positioning of the core on the drag mold. Other improvements disclosed include providing a radial draft on the casting surrounding a bolt hole at a core parting or joint line so that nuts and washers may be evenly loaded. In the bolster interior, ribs may be straightened.

US Patent:

60891661, Jul 18, 2000

Filed:

Jul 19, 1999

Appl. No.:

9/357061

Inventors:

Thomas R. Callahan - Maryville IL
Anthony J. Bauer - Edwardsville IL
Edward R. Hanson - Edwardsville IL
Charles Moehling - Arlington Heights IL
Ronald R. Evers - Alliance OH

Assignee:

Amsted Industries Incorporated - Chicago IL

International Classification:

B61F 100
B61F 516

US Classification:

105226

Abstract:

An improvement in cast metal bolsters for railway trucks is disclosed. The bolster has a top wall, a bottom wall and sidewalls. All of the walls have interior and exterior surfaces. Two transverse ribs extend between the top wall and bottom wall and two spaced longitudinal ribs extend from the top wall to the bottom wall. The bolster has a top portion, a bottom portion, a central vertical longitudinal plane between the sidewalls and a perpendicular vertical transverse plane. The transverse ribs have opposite faces in the top portion and in the bottom portion. A vertical plane extends between the opposite faces of the transverse ribs in the top portion and in the bottom portion. The opposite faces of the transverse ribs in the top portion do not diverge from a vertical plane in the same direction and opposite faces in the bottom portion that do not diverge from a vertical plane in the same direction. The transverse ribs may have a vertical plane of symmetry. The bolster is made from improved cores, including a one-piece center core that has surfaces for defining the interior surfaces of the top wall, bottom wall and side walls.

US Patent:

20140262100, Sep 18, 2014

Filed:

Mar 13, 2013

Appl. No.:

13/799629

Inventors:

- Chicago IL, US
Thomas Callahan - Maryville IL, US

Assignee:

Amsted Rail Company, Inc. - Chicago IL

International Classification:

B22C 9/22
B22C 9/02

US Classification:

164 16

Abstract:

A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.