Cindy's Gold Plated WrenchBruce's Bahco Collections

Home   Family Connection   Collection Background  Photo Album   Patents   Wrench Evolution Contact Me 


Generation 1

Generation 2

Generation 3

Generation 4

Generation 5

Generation 6

Alligator Jaw Wrenches

Dual Wrenches

3rd Generation and Clyburn Models  Clyburn Model Wrench

On November 5, 1913, the board decided to prepare a wrench for export to England.


Rolf Nyström provided the following information regarding the designation CLYBURN.

Clyburn relates to a wrench produced in England during the 1870-1880 period. This wrench was designed so that the runner, or moveable jaw,  ran outside of the shaft head. The adjustment of the runner was performed with a set screw. This wrench had been successfully marketed in England. When it was put up for A.B. B.A. Hjorth & export wrenches to England, the introduction of the name CLYBURN facilitated marketing.

On 21 December 1914 H. Brynge received patent no. 40417  The text "BAHCO-CLYBURN" and patent no. 40417 were on the wrenches until 1924.

On October 17, 1914 models 70-78 were introduced. In the catalogue, sizes 76,77 and 78 are not available.  In all likelihood, they were never manufactured.

70-Series wrenches had a 15-degree angle between the head and handle, had left-handed threads and was fully hardened.

No. 70 gripping capacity 19 mm length 155 mm (6 ")   
No. 71 - "- 26 mm -" -    205 mm (8 ")
No. 72 - "- 30 mm -" -    255 mm (10 ")
No. 73 - "- 34 mm -" -    305 mm (12 ")
No. 74 - "- 43 mm -" -    380 mm (15 ")
No. 75 - "- 53 mm -" -    455 mm (18 ")

Along with 70-series, a wrench was produced with a 45 degree angle between head and handle, the 81-87 series. Grip capacity and length are identical to 70 series.For example, 72 = 82.

Wrenches 81-87 have never been seen with the "BAHCO-CLYBURN".label.

By the year 1950, sizes 86 and 87 were manufactured with a smooth-shank. Replacement of a welder meant that the head and shaft of 86 and 87 could be  forged separately, and then welded together..

In 1924 the head,became narrower on both 70 - and 80-series wrenches. In the late 1940s it was decided that the manufacture  of wrenches 81-85 would cease.

Wrench No. 69 was first produced 1926 The first model was No. 29 but changed  to 69 in June 1926. 
Grip capacity was 12.5 mm. Length was 110 mm (4 ").

In 1954, the handle of the 70-series wrenches changed.  The width of the shank edges was reduced while maintaining thickness
The label was changed to read AB BAHCO Instead of A.B. B.A. HJORTH & Co..

In 1969 production of the 70-series wrenches ended.


Special design
No. 30 Was designed as a bicycle wrench. Production began in 1923
Thinner head than the corresponding width of the 70-series.
Tire remover at the rear.
Grip capacity 19mm, length 155 mm (6 ")
The model number was changed in March 1926 to 10


No. 11 came into production in May 1926  

Has the same head shape and grip aperture as No. 31

The length is 205 mm (8 ")
Equipped with tire remover.

No. 11A was first produced in May 1928th
Was the same as No. 11 but holes in the handle  instead of the tire remover.

No. 13 came into production in February 1926 and ended in the late 1940s.
It was like No. 73 but with a tire remover at the end of the handle.

No. 10B was produced from late in 1930 until1951.
It was identical to the No. 10, but with a simpler design and thus cheaper.



Bicycle wrench
No. 15 was produced from 1928 until the late 1940s.
The jaw opening was at a right angle to the handle. The moveable jaw runs outside of the shaft. A adjusting screw works against the toothed edge of the shank.
Had a tire remover at the end of the handle. The handle and jaws were drop forged.
Grip capacity 30mm and length 150 mm


Based on the above description, the model 15 must have been of a style similar to the old Monkey Wrench or today’s American style pipe wrench.