Spare parts, diagnostics, workshop equipment, workshop concepts

Bosch Submitted Patent Application for the First Electric Horn in 1914 100 Years of Vehicle Horns and Fanfare from Bosch

  • Customers past and present impressed by reliable, durable technology and quality
  • Their characteristic tone has made Bosch horns a global success
  • Wide range of horns and fanfare available for retrofitting
Add to my press materials
Save text
  • April 08, 2014
  • Spare parts, diagnostics, workshop equipment, workshop concepts
  • Press releases
  • Images: 2

press release

With their distinctive sound, Bosch horns and fanfare ensure vehicles remain safe on roads around the world. Bosch submitted its patent application for the first electric horn 100 years ago in Germany. Right from the very beginning, drivers were impressed by the reliable technology in the legendary Bosch horn. Bosch now offers a wide range of horns and fanfare for motorcycles, cars and commercial vehicles; these products are characterized by their functional reliability, long service life and attractive design.

Robert Bosch GmbH submitted its patent application for the electric horn on April 12, 1914. During development, the company wanted the product to have a long range and a pleasant sound. The horn needed to reliably emit a sound as soon as it was activated, and low power consumption and an attractive design were also important prerequisites. The new Bosch horn, which came onto the market in 1921, met all of these objectives. The horn was based on the principle of "stopped pipes" used in organ pipe building. These pipes are closed at the upper end, so they emit a lower sound than open pipes. In the Bosch horn, this principle resulted in a pleasant and very characteristic tone.

Horns Produce Sound in All Directions — Fanfare Bundle the Sound Together
The original design principle has remained unchanged in each of the successors to the Bosch horn that was patented 100 years ago. The sound is generated by an electrically activated membrane and is emitted in all directions. The product range has been extended to include fanfare. The funnel in a sounder is calibrated to a precise pitch and also uses a membrane to produce an exceptionally pleasant and soft sound that, unlike the sound produced by horns, is emitted in one direction. The unmistakable sound of Bosch horns and fanfare can now be heard on roads around the world.

Wide Range Available for New and Used Cars, as well as Retro and Classic Cars
Bosch horns are available in a wide variety of models and variants for original equipment, individual design and special requirements for commercial vehicles, cars, SUVs and pick-ups.

Suitable products are also available for classic car enthusiasts. Bosch Automotive Tradition, the classic division of Bosch, gave the famous Bosch horn a new and historic redesign in 2006, including slotted screws and chrome-plated horn covers. The original was used in many vehicle brands and models from the 1950s and 1960s.

Reader contact:
Robert Bosch GmbH
Automotive Aftermarket
Phone: +49 (0) 9001 942010

The Automotive Aftermarket division (AA) provides the aftermarket and repair shops worldwide with a complete range of diagnostic and repair shop equipment and a wide range of spare parts – from new and exchange parts to repair solutions – for passenger cars and commercial vehicles. Its product portfolio includes products made as Bosch original equipment, as well as aftermarket products and services developed and manufactured in-house. More than 18,000 associates in 150 countries, as well as a global logistics network, ensure that some 650,000 different spare parts reach customers quickly and on time. In its “Automotive Service Solutions” operations, AA supplies testing and repair-shop technology, diagnostic software, service training, and information services. In addition, the division is responsible for the “Bosch Service” repair-shop franchise, one of the world’s largest independent chains of repair-shops, with some 17,000 workshops. In addition, AA is responsible for more than 1,000 “AutoCrew” partners.

Additional information can be accessed at

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Further information is available online at and,

PI8537 - April 08, 2014

Your contact person for journalists

Heiderose Dreiner

+49 721 942-3145 Send Email

Share this information