Johnson barn.

Brit.

/ˈdʒɒnsn bɑː/, U.S.

/ˈdʒɑns(ə)n ˌbɑr/

Origin: From a proper name, combined with an English element. Etymons: proper name Johnson , bar n.¹

Etymology: < the surname Johnson (although it is unclear after which person with this surname the lever was named) + bar n.¹

U.S. Now historical and rare.

In a vehicle: a control lever with several different positions and a sprung trigger which must be depressed in order to move the lever from one position to another; esp. (in early use) a lever of this kind used in a steam locomotive to control the timing with which steam is admitted to the pistons.In a steam locomotive the Johnson bar can be used to change the direction in which the wheels turn. For this reason it is also often called a reversing bar.

ΘΚΠ

society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > which allows change of speed or direction > parts of

reversing lever1822

reverse lever1839

change-speed1881

reverse1882

Johnson bar1884

gate1906

synchromesh1929

hot shift1971

preselector1979

1884 Firemen's Mag. May 296/2 Every fireman listens to see how far back the bold engineer works the Johnson bar.

1943 Railroad Mag. 34 58/1 He jerked two short ones from his chime, eased the Johnson bar down to the first corner and dropped his left hand on the throttle.

1971 M. Tak Truck Talk 93 Johnson bar, the emergency brake handle.

1997 L. Spencer Small Time Girl 362 Cy grabbed the Johnson Bar and squeezed for dear life. With his other hand he hauled on the steam whistle.

This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022).

单词	johnson bar
释义	Johnson barn. Brit. /ˈdʒɒnsn bɑː/, U.S. /ˈdʒɑns(ə)n ˌbɑr/ Origin: From a proper name, combined with an English element. Etymons: proper name Johnson , bar n.¹ Etymology: < the surname Johnson (although it is unclear after which person with this surname the lever was named) + bar n.¹ U.S. Now historical and rare. In a vehicle: a control lever with several different positions and a sprung trigger which must be depressed in order to move the lever from one position to another; esp. (in early use) a lever of this kind used in a steam locomotive to control the timing with which steam is admitted to the pistons.In a steam locomotive the Johnson bar can be used to change the direction in which the wheels turn. For this reason it is also often called a reversing bar. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > wheel > [noun] > cog or gear > which allows change of speed or direction > parts of reversing lever1822 reverse lever1839 change-speed1881 reverse1882 Johnson bar1884 gate1906 synchromesh1929 hot shift1971 preselector1979 1884 Firemen's Mag. May 296/2 Every fireman listens to see how far back the bold engineer works the Johnson bar. 1943 Railroad Mag. 34 58/1 He jerked two short ones from his chime, eased the Johnson bar down to the first corner and dropped his left hand on the throttle. 1971 M. Tak Truck Talk 93 Johnson bar, the emergency brake handle. 1997 L. Spencer Small Time Girl 362 Cy grabbed the Johnson Bar and squeezed for dear life. With his other hand he hauled on the steam whistle. This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022). < n.1884
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