Marked Bricks: Numbers & Symbols

1 face brick

1 face brick

Gladding, McBean & Company

Lincoln, Placer County, CA

1919-1931

Courtesy of Doug Smith

1 3/4 firebrick

Gladding, McBean & Company and Interpace

Lincoln, Placer County, CA

1950s-1960s

Courtesy of George L. Kennedy

24 low-duty firebrick

24 low-duty firebrick

St. Louis Fire Brick & Clay Company

Los Angeles, Los Angeles County, CA

1901-1930

Courtesy of Douglas S. McIntosh

115 wedge rotary kiln (KROMAG) chrome-magnesite firebrick

E.J. Lavino & Company

Newark, Alameda County, CA

1952-1971

View of the marked face of the PINITE 6-12-4 1/2 firebrick. Courtesy of Ron George.

6 x 12 x 4 1/2 (PINITE) medium-duty firebrick

Gladding, McBean & Company (1943-1962) and Interpace 1962-1982

Pittsburg, Contra Costa County, CA

1943-1982

1-Acorn firebrick

1-ACORN firebrick

Pacific Clay Products, Inc.

Corona, Riverside County, or Los Angeles, Los Angeles County, CA

1921-1953

Courtesy of Ron Rose

View of the marked face of the 1/DIABLO firebrick. Courtesy of Ron Rose.

DIABLO 1 wedge or arch superduty firebrick

Gladding, McBean & Company (1943-1962) and Interpace 1962-1982

Pittsburg, Contra Costa County, CA

1943-1982

Courtesy of Ron Rose

View of the marked face of the 2/DIABLO firebrick. Courtesy of Ron Rose.

DIABLO 2 wedge or arch superduty firebrick

Gladding, McBean & Company (1943-1962) and Interpace 1962-1982

Pittsburg, Contra Costa County, CA

1943-1982

Courtesy of Ron Rose

View of the marked face of the 9-78 9-inch rotary kiln block. Photo courtesy of Joe and Michelle Pedroni.

9-78 STOCKTON FIRE firebrick

Stockton Fire Brick Company 

Pittsburg, Contra Costa County, CA

1931-1943

Courtesy of Joe and Michelle Pedroni.

1923 common brick

1923 common brick

City Brick Company

Los Angeles, Los Angeles County, CA

1923

Courtesy of David Garcia

1924 common brick

1924 common brick

Simons Brick Company

Simons, Los Angeles County, CA

1924

Courtesy of George L. Kennedy

[BTT logo] common brick

[BTT logo] common brick

San Jose Brick Company

San Jose, Santa Clara County, CA

1887-1927, brick shown was made probably about 1900

Courtesy of James Salata

Western common brick with CBMA logo

[CBMA logo] common brick

Western Brick Company

Long Beach, Los Angeles County, CA

1925-1930

Marked view of the Common Brick Manufacturers Association logo for Los Angles Brick Company

[CBMA logo] common brick

Los Angeles Brick Company

Plant No. 2 East Seventh Street Yard, Los Angeles, Los Angeles County, CA

1900-1929, brick shown was made in 1928

Courtesy of Michael Iwinski

[CBMA] LABCo

[CBMA logo] L.A.B.Co. common brick

Los Angeles Brick Company

Plant No. 1, Chavez Ravine yard, Los Angeles, Los Angeles County, CA

1900-1924

Courtesy of George L. Kennedy

Round Dimple red pressed brick

Round Dimple red pressed brick

Gladding, McBean & Company

Lincoln, Placer County, CA

1890-1909

Round Dimple buff pressed brick

Round Dimple buff pressed brick

Gladding, McBean & Company

Lincoln, Placer County, CA

1890-1909

View of the marked face of the Livermore Star firebrick, with the star on top.

LIVERMORE [star] firebrick

Livermore Fire Brick Works, W. S. Dickey Clay Manufacturing Company

Livermore, Alameda County, CA

1917-1926

Three Stars firebrick

[three star] intermediate-duty firebrick

Los Angeles Pressed Brick Company

Cleveland St. yard (1887-1916), Los Angeles, Los Angeles County, and Alberhill yard (1916-1926), Riverside County, CA

1898-1926

Courtesy of Ron Rose