Company Filing History:

6 out of 9

Wm. R. Stewart & Sons (hacklemakers) Limited

patents

The Minister of Agriculture Fisheries and Food in Her Britannic

patents

4. 1 out of 1

William R. Stewart & Sons Ltd.

patent

Years Active: 1979-1995

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5447238 - Separating mechanism (1995-09-05),

2. 5018538 - Cigarette making machine (1991-05-28),

3. 5005259 - Opening roller for open end spinning machines (1991-04-09),

4. 4869060 - Fiber opening devices (1989-09-26),

5. 4825511 - Securing segments to a base (1989-05-02),

6. 4593706 - Producing filler material, particularly for cigarette filters (1986-06-10),

7. 4530133 - Opening roller for open end spinning machines (1985-07-23),

8. 4528050 - Producing filler material, particularly for cigarette filters (1985-07-09),

9. 4510949 - Feeding particulate material, especially tobacco (1985-04-16),

10. 4270245 - Lag or stave assembly for Kirschner beaters (1981-06-02),

11. 4184619 - Cutting device (1980-01-22),

12. 4162559 - Carding apparatus (1979-07-31),

Title: The Innovative Mind of David B Stewart: A Patented Journey

Introduction

David B Stewart, an accomplished inventor hailing from Newtyle, GB, has made significant contributions to the field of cigarette manufacturing. With a remarkable portfolio of 12 patents, Stewart has established himself as a pivotal figure in innovating processes that enhance tobacco product production.

Latest Patents

Among his latest patents is a sophisticated separating mechanism designed for a cigarette-making machine. This apparatus includes a series of carded rollers that transfer a metered stream of tobacco while allowing shorter strands or particles of tobacco to drop out at designated points. The invention also features collecting and metering means for both tobacco shorts and longer particles, ultimately combining them to produce a consistent cigarette filler stream. This innovation showcases Stewart's commitment to improving efficiency and precision in cigarette production.

Career Highlights

David B Stewart has a diverse background within the tobacco manufacturing sector. He has been associated with notable companies, including Wm. R. Stewart & Sons Limited, known for their expertise in hacklemaking, and Molins Plc, a company that has played a significant role in cigarette machinery. His tenure at these organizations has undoubtedly contributed to his inventive prowess.

Collaborations

Throughout his career, Stewart has collaborated with esteemed colleagues, including William R. Stewart and John M. Dickinson. These professional relationships have likely fostered a creative environment conducive to innovation, enabling the development of pioneering technologies in cigarette manufacturing.

Conclusion

In summary, David B Stewart's inventive spirit and dedication to refining the processes in cigarette manufacturing have led to a significant number of patents and advancements in the industry. His continued work and collaboration with other talented individuals point to a promising future filled with potential innovations.

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