Documentation from Round Ram Rebuild "Documentation Bridgeport manuals are readily available on the Internet, on eBay, and from friends at NEMES. My current favorite manual is part of a CD that I got from Errol Groff for $10. Errol sells a CD that started out devoted to shapers but has expanded to many other types of machines. Included on it is the M-105H Bridgeport Series I Milling Machine Installation, Operation and Maintenance Manual. A total of about 450 Meg of information for $10.00 shipping included. If you would like to just download the 2.4Mb Bridgeport manual click here. Errol accepts cash, check, money order and PayPal. He has shipped out about 150 copies and has yet to have anyone ask for a refund. Latest CD Contents as of 14 Jan 2003 Bridgeport Manuals 1981 Programming Manual 1983 Programming Manual R2E3 Manual Series II NC Programming Manual Student Manual Bridgeport Series 1 Install, Operate and Maintain Manual Quick Change Tooling for the J Head Brown and Sharpe No. 3 Mill Manual Fundamentals of Machine Tools Grinding and Lapping 1907 Treatise on Grinding and Lapping Grinding Dressers J and S Fluidmotion Optidress Manual Selecting the Right Grinding Wheel (Norton) Tangential Wheel Dresser Jacobs Chuck Jacobs Rubber Collet Chuck Leblond 15 and 19 Inch Lathes Leblond Manual Machinery Repair Odds and Ends Thread Elements Jones and Lamson Shaper Work Shapers - Chapter 1 and 2 Machine Tool Operation Errol Groff 180 Middle Road Preston, CT 06365 8206 Errol Groff Instructor, Machine Tool Department H.H. Ellis Technical School (860) 774-8511 Home Page: http://pages.cthome.net/errol.groff/ One source for Bridgeport information is the Yahoo group “Bridgeport_Mill” which you can join at http://groups.yahoo.com/. Another is Tony Griffiths’ machine tool information website. This site has information about many machines, including lathes and mills. The Bridgeport area includes descriptions of accessories that haven’t been made in years: www.lathes.co.uk/bridgeport Serial Numbers This chart is a cross reference from Bridgeport serial numbers to date of manufacture including an estimate of the number produced each year: Round Ram Year Serial Number Range # Made 1938 BH-1 thru BH-39 39 1939 BH-40 thru BH-252 213 1940 BH-253 thru BH-656 404 1941 BH-657 thru BH-1549 893 1942 BH-1550 thru BH-2943 1394 1943 BH-2944 thru BH-4105 1162 1944 BH-4106 thru BH-4997 892 1945 BH-4998 thru BH-5930 933 1946 BH-5931 thru BH-7235 1305 1947 BH-7236 thru BH-8814 1579 1948 BH-8815 thru BH-10381 1567 1949 BH-10382 thru BH-11378 997 1950 BH-11379 thru BH-12750 1372 1951 BH-12751 thru BH-14489 1739 1952 BH-14490 thru BH-16700 2211 1953 BH-16701 thru BH-19367 2667 1954 BH-19368 thru BH-22732 3365 1955 BH-22733 thru BH-26962 4230 Start V Ram 1956 BR-26963 thru BR-31618 4656 1957 BR-31619 thru BR-37278 5660 1958 BR-37279 thru BR-42110 4832 1959 BR-42111 thru BR-46938 4828 1960 BR-46939 thru BR-52598 5660 1961 BR-52599 thru BR-58552 5954 1962 BR-58553 thru BR-64987 6435 1963 BR-64988 thru BR-71981 6994 1964 BR-71982 thru BR-79538 7557 1965 BR-75939 thru BR-88180 8642 1966 BR-88181 thru BR-98089 9909 1967 BR-98090 thru BR-108351 10262 1968 BR-108352 thru BR-118640 10289 1969 BR-118641 thru BR-131778 13138 1970 BR-131779 thru BR-138139 6361 1971 BR-138640 thru BR-143350 5211 1972 BR-143351 thru BR-149294 5944 1973 BR-149295 thru BR-157909 8615 1974 BR-157910 thru BR-167652 9743 1975 BR-167653 thru BR-174083 6431 1976 BR-174084 thru BR-180697 6614 1977 BR-180698 thru BR-188559 7862 1978 BR-188560 thru BR-196987 8428 1979 BR-196988 thru BR-206296 9309 1980 BR-206297 thru BR-216473 10177 1981 BR-216474 thru BR-227523 11050 1982 BR-227524 thru BR-231700 4177 1983 BR-231701 thru BR-235985 4285 1984 BR-235986 thru BR-241350 5365 1985 BR-241351 thru BR-246659 5309 1986 BR-246660 thru BR-248551 1892 1987 BR-248552 thru BR-250531 1980 1988 BR-250532 thru BR-252874 2343 1989 BR-252875 thru BR-255463 2589 1990 BR-255464 thru BR-257888 2425 1991 BR-257889 thru BR-259897 2009 1992 BR-257898 thru BR-262188 2291 1993 BR-262189 thru BR-264586 2398 1994 BR-264587 thru BR-267635 3049 1995 BR-267636 thru The main serial number, shown in the above chart, is located on the top of the knee in the front. Mine is #7365, which did not include the “BH” prefix. To expose the serial number, crank the saddle back towards the column until the chip guard plate slides back an inch. My Bridgeport was manufactured in 1947 – the same year I was born. The door contains the full serial number BH7365, which matches the knee. It also has a patent number 2275291, which matches one on the table. The Saddle has a serial number on the left side next to the table lock handle. It should match the table serial number. Mine is #527. I don’t remember where the table serial number is. I suspect it is under the left or right bearing bracket. It really doesn’t matter as it was used during assembly at the factory to insure the surfaces that were hand scraped match up on the same machine. The table also has a patent number on the front center. Mine is #2275291. If anybody knows for sure where the table serial number is please let me know and I’ll update this paragraph. Each dial and handle is stamped with an A, B, C, or D. The left handle and dial are A. There is also an A on the front left of the table. The right handle and dial are B. There is a B on the front right to match. The cross feed (Y axis) handle and dial are C. The elevating (Z axis) dial is D. They are machined to match and won’t fit as well anywhere else. The M-Head serial number is on the left of the quill housing. Mine is #M21472. It should match the serial number on the belt housing. The belt-housing serial number is on a label fastened to the front of the housing. Mine is #M21472. It should match the M-head serial number. Not all motors have serial numbers. They changed type and manufacturers of motors over the years. Mine has a serial number on a label on the front of the motor. It is #3064."