The Brehmer 39 ¾ book sewing machine is a classic example of industrial bookbinding engineering, representing an important stage in the evolution from hand-sewn binding to mechanized production systems. The original design was developed by the Brehmer brothers, whose machines became widely used in binderies across Europe from the late 19th century onward.
The particular machine described here was manufactured after the Second World War by the successor company VEB Leipziger Buchbindereimaschinenwerke, which continued and further developed the Brehmer tradition within the East German printing machinery industry.
This machine is used for thread sewing folded signatures into a durable book block. The folded sheets are fed into the machine, precisely positioned, and sewn together along the fold using thread. The result is a strong, flexible book structure with excellent opening characteristics, allowing the book to lie relatively flat during use. Compared to adhesive binding methods, thread-sewn book blocks offer significantly greater durability and long-term stability.
The Brehmer 39 ¾ operates through a coordinated mechanical system that controls feeding, alignment, needle movement, and thread tension in a continuous process. Although mechanized, it requires skilled setup and adjustment, particularly when working with different paper types, formats, and production requirements. It reflects a period of engineering where machines were designed to translate traditional handcraft into reliable industrial processes.
Machines of this type were widely used in commercial binderies, enabling efficient production of high-quality books, journals, and printed editions while preserving the structural principles of hand sewing.
Today, preserved and operational examples of the Brehmer 39 ¾ provide valuable insight into the history of book production. In active use, they continue to demonstrate the durability and flexibility of sewn bindings and the ingenuity of mid-20th-century bookbinding technology.
