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BEDROCK Type Study



The chart below is a summary Type Study of Stanley Bed Rock Planes based on Bob Kaune’s thorough 1996 study and additional research I have conducted over the past several years.   Please note that all type studies are approximate as production variations throughout the manufacturing years were quite common.   Also keep in mind that Type Studies are present day references, time-lines that map changes in the design and features of tools manufactured in the past.  Understand that neither Stanley nor any other manufacturer followed type studies.  They didn’t exist at the time.  In fact, it is only in the last 30 years or so that type studies have been assembled through historical research and the physical inspection of hundreds or thousands of tools made over the years.


Bed Rock Distinguishing Features By Type Dates


Low Knob – Rounded Sides



Type 1 1898

Beds marked with Bailey model numbers (Nos.2 to 8.)

Space below “PAT’D APR. 2. 95″ was milled out at the factory

S casting mark on bed (a single raised dot on some specimens)

Frogs & Lever Caps have “B” casting marks

Lateral lever has two patent dates “10-21-84 & 7-24-88”

STANLEY R & L CO…BED ROCK on lever caps, Q trademark stamp on most irons



Type 2 1899

7-24-88 is the only patent date on the lateral adjustment lever


Type 2a

Model No.603 and 604 beds (only these two) were marked “No.60x”


Type 3 1900-1908

All beds now marked with “600” numbers, i.e.; No.602 – 608

No milled space below “PAT’D. APR. 2. 95.” on bed, B casting marks

Frogs of some planes are nickel-plated on the machined surfaces



Type 4 1908-1910

B casting marks eliminated. No patent dates on the lateral adjustment lever

Lever caps now marked “STANLEY….BED ROCK”

Some irons have “S” trademark stamp, later planes have “T” trademark stamp


High Knob – Flat Sides


Type 5 1911

Beds now marked “BED ROCK” in addition to “600” model numbers

2 patent dates behind frog, “PAT’D. APR. 2. 95″ & APR. 19. 10″

Flat-top sides introduced for first time

Raised knob receiver (flat version), Tall knobs introduced, “T” tm on irons

Frogs are now attached to beds with adjustment pins and set screws



Type 6 1912-1921

Lever caps now marked “BED ROCK”

Irons stamped with “V” trademark or “X” trademark stamps



Type 6a 1922

1-1/4″ diameter frog adjustment wheel

Iron stamped with “Y” Trademark (1922-1923)



Type 7 1923-1926

One patent date behind the frog – “U.S. PAT. APR. 19. 10.”

Lever caps marked “STANLEY” only in the notched rectangular logo

Irons stamped with “AA” Trademark (1923-1935)



Type 8 1927-1930

Bed now stamped “MADE IN USA” in addition to the one patent date

Knob receiver boss now cupped for fitting knob



Type 9 1931-1932

Beds no longer have a patent date; stamped “MADE IN U.S.A.” only

Some lever caps nickel-plated with orange paint behind STANLEY logo



Type 10 1933-1941

Beds of No.603, 604 & 605-1/4 planes have raised handle receivers

Some frogs have orange paint on sides like Bailey planes

Lever caps now have kidney-shaped bolt holes

Irons stamped with BB tm starting in 1936



Type 11 1942

Castings are heavier and thicker during war production years

Finishes left rough; lever caps not plated or polished



Type 12 1943

Frog adjustment nut either hard rubber or small diameter steel

Knob and handle are hardwood (maple) with dark varnish stain

All brass parts eliminated during war-time production










Courtesy Bryant Rice,
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