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Madeline M. Turner: The Inventor Who Made Juicing Easier

Turner lived in Oakland during the early twentieth century, a period when opportunities for both women and African Americans in engineering, manufacturing, and invention were extremely limited. Nevertheless, she designed a sophisticated mechanical fruit press that could process citrus fruits much more efficiently than squeezing them by hand.

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A copy of Madeline M. Turner’s juicer patent.

More than a century before juice bars, smoothie shops, and freshly pressed beverages became commonplace, an African American woman in Oakland, California, developed an ingenious machine for extracting juice from fruit.

Her name was Madeline M. Turner, and although little is known about her personal life, her remarkable invention earned her an important place in the history of American innovation.

Turner lived in Oakland during the early twentieth century, a period when opportunities for both women and African Americans in engineering, manufacturing, and invention were extremely limited. Nevertheless, she designed a sophisticated mechanical fruit press that could process citrus fruits much more efficiently than hand squeezing.

On July 26, 1915, Turner filed an application with the United States Patent Office for what she described as improvements to machines designed to extract juice from fruits such as oranges and lemons. On April 25, 1916, she received U.S. Patent No. 1,180,959 for her “Fruit-Press.”

Turner’s machine was much more complicated than a simple handheld juicer. Fruit entered the machine through an opening at the top and was fed individually into a pressing chamber. Inside, a cutting mechanism divided the fruit. Two plungers then moved toward one another, using specially shaped concave and convex pressing surfaces to squeeze the fruit and extract its juice.

A copy of Madeline M. Turner’s juicer patent.
A copy of Madeline M. Turner’s juicer patent.

One particularly clever feature was the way the two plungers moved at different speeds and traveled different distances. Their coordinated movement allowed the machine to feed, cut, compress, and eventually release the fruit’s remains. She designed the apparatus to accomplish several steps mechanically rather than requiring a person to perform each operation by hand.

In her patent application, she also emphasized practicality. She explained that the machine was effective for its intended purpose and designed so that its parts could be kept clean—an especially important consideration for equipment used to prepare food and beverages.

Turner’s invention appeared during an era when the American food industry was rapidly becoming more mechanized. Machines were increasingly being developed to process, package, and distribute foods in larger quantities. Her fruit press demonstrated how mechanical engineering could make juice extraction faster and more efficient.

Unfortunately, historical records reveal little about what happened to Turner after her patent was issued. Her birth and death dates, education, family life, and later career have not been reliably documented. Even so, the surviving patent provides powerful evidence of her mechanical creativity and technical ability.

Today, Turner is remembered as one of the African American inventors whose innovations helped transform everyday life. Modern commercial juicing equipment is far more advanced than her 1916 machine, but the basic challenge Madeline tackled—automatically feeding, cutting, pressing, and extracting juice from fruit—remains central to food-processing technology.

Turner’s story reminds us that important inventors are sometimes nearly lost to history. However, thank goodness her patent will ensure that her creativity and contribution to American innovation will not be forgotten.

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Activism

Youth-Led Black August Event Brings Past to Present at East Oakland Boxing Association

The mission of Youth Alive! Is to “break the cycle of violence, heal trauma, and uplift a thriving community of leaders, to save lives in Oakland and beyond” by serving “as mentors, youth leaders, counselors, case managers, intervention specialists and violence interrupters,” working “to help violently wounded people heal themselves and their community.”

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Dawna Williams, EOBA executive director speaks to attendees at the Black August Eperience on Aug. 21. Photo courtesy of Carolyn Flynn of EOBA.
Dawna Williams, EOBA executive director speaks to attendees at the Black August Eperience on Aug. 21. Photo courtesy of Carolyn Flynn of EOBA.

Youth-Led Black August Event Brings Past to Present at East Oakland Boxing Association

The East Oakland Boxing Association (EOBA) and Youth Alive! came together on Aug. 21 to share with their community all that Black August means to them.

Held on EOBA’s patio at 816 98th Ave. in Deep East Oakland, the two organizations hosted their second annual Black August Experience, featuring a food tasting, financial literacy and mindfulness workshops, and voter registration with the League of Women Voters Oakland (LWV).

Black August is known as a time to uphold the legacy of prisoners who protested their conditions by fasting, fighting, and educating themselves on the economic and political circumstances that contributed to their incarceration.

According to its website, “EOBA is a multi-service youth and community development hub that goes far beyond the ring. While rooted in the discipline of boxing, for nearly 40 years EOBA has also integrated robust programs in workforce development, food justice, afterschool enrichment, financial literacy, mentorship, and wellness.”.

The mission of Youth Alive! Is to “break the cycle of violence, heal trauma, and uplift a thriving community of leaders, to save lives in Oakland and beyond” by servingas mentors, youth leaders, counselors, case managers, intervention specialists and violence interrupters,” working “to help violently wounded people heal themselves and their community.”

Through Coro California, another leadership organization serving young people across the state for 80 years, they gained a broader understanding of Black August.

EOBA Executive Director Dawna Williams spoke about how much she learned about Black August from the youth who created it. “I let them educate me,” she said. Instead of talking about prison reform and mass incarceration, Williams and youth interns found that Black August meant so much more. “We would have done a disservice if we had just focused on who the people were and what their situation was…We tried to take their message from back in the day and make it relevant to the young people today. What do they need to know?”

Youth interns created and placed posters around the patio to help participants understand how traditional Black foodways, civic engagement, financial literacy, and the power of education are relevant to Black resistance today.

An EOBA member described Black August with Youth ALIVE! as “a whole vibe. “This year we added the Fun Zone for the kids, because you really cannot go wrong with a Fun Zone. I also loved seeing everyone chillin’ in the outdoor lounge, catching some Vitamin D and just enjoying a Friday evening together.”

The food tasting, a popular event from last year, featured traditional Black foods such as black-eyed peas, johnny cakes, and fried chicken. Led by Williams, the tasting included a talk about how these traditional foods were made and why they are forms of Black resilience.

The “‘Plate of History’ was a favorite of the online writers. “Fun, educational, and did I mention delicious? Our Taste of History cook, Angela Southall, served up some good eats while connecting food to history and culture.”

The writer also commended the “League of Women Voters Oakland for their civic leadership and for getting our young people informed, ready, and registered to vote.”

Overall, it was a “good Friday event in East Oakland,” the writer said.

Upcoming Black August events: Building Opportunities for Self-Sufficiency (BOSS), will host “Black August: The Arc of Liberation” at Oakland City Hall on Sat. Aug. 29, from 11 a.m. to 3 p.m.

The websites for East Oakland Boxing Association, Youth Alive! and CORO are sources for this report.

Jana Lang is an Oakland resident, teacher, gardener and poet participating in the Propel News Initiative.

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Black History

Arnold Perkins: At 85, a Life of Service, Faith and Giving Back

Perkins believes that health is not simply physical. It is emotional, mental, and spiritual. And for much of his life, he says, his faith and philosophy of service have kept him vibrant, happy and connected to the world around him.

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The Post’s Healthy Aging Series addresses key components for healthy aging: mind, body and spirit. This article addresses the importance of having a strong spiritual or religious foundation.

As America’s population grows older, conversations about healthy aging often focus on diet, exercise and medical care. But for Dr. Arnold Xavier Cornelius Perkins, who will celebrate his 85th birthday next month, another ingredient has been equally important: a spiritual foundation and a lifelong commitment to serving others.

Perkins believes that health is not simply physical. It is emotional, mental, and spiritual. And for much of his life, he says, his faith and philosophy of service have kept him vibrant, happy and connected to the world around him.

“I am my brothers’ and sisters’ keeper,” Perkins said. “I am a ‘we’ person,” and referenced the South African expression of ‘Ubuntu,’ which means ‘I am because we all are.”

Born in Miami, Florida, Perkins came to California in 1954 with his family to attend a Seventh-day Adventist General Conference. His family ultimately decided to remain in California, unwilling to return to the harsh racism of the segregated South.

He grew up in Berkeley, attending Golden Gate Academy, Willard School, and Berkeley High School before joining the Navy during the Vietnam War era. He later attended Merritt College when the Black Panther Party was emerging in Oakland, where he became involved as a volunteer for the Student Non-Violent Coordinating Committee (SNCC). He graduated from San Francisco State University and completed additional coursework at Cal State East Bay.

His professional career became a remarkable journey through public service. Perkins served as Alameda County’s homeless coordinator, became a program officer with the San Francisco Foundation, headed a drug and alcohol program, and ultimately served as director of the Alameda County Public Health Department for 12 years before retiring in 2006.

But retirement did not mean stepping away from service.

Perkins jokingly describes this stage of his life as being in “preferment,” doing what he pleases. What he pleases, however, is continuing to help people.

He has worked with young people, served on San Quentin Prison’s warden advisory council, previously served on the Oakland Police Department Selection Commission, and completed two terms as chair of the Alameda County Juvenile Justice Delinquency Prevention Commission. He chaired the University of San Francisco’s Helen Diller Stanley Comprehensive Cancer Center for 10 years and is now in his 11th year serving on the California Wellness Foundation board.

Perkins even views a hereditary heart defect through the lens of his spiritual philosophy.

“I have a hole in my heart, so I’m not physically perfect,” he said. “But I look at it as I have a hole because I pour my heart out to people.”

That perspective may be one of his greatest lessons about healthy living. Perkins believes that kindness, compassion and community have a direct impact on a person’s emotional and spiritual well-being.

“If I see an unsheltered relative, I’d give them that $20,” he said. “My responsibility is to take care.”

For Perkins, giving does not deplete a person; it gives life back. “My life’s mission is to give,” he said. “And what I get back is life.”

He knows firsthand that one person can change another person’s destiny. As a young man, Perkins stuttered and often fought in response to the teasing and humiliation he experienced. A teacher, Jeff Tedisco, defended him and changed the direction of his life.

“If it hadn’t been for him,” Perkins said, “I would have been in San Quentin.”

Instead, Perkins now goes to Indaba Court, a restorative justice program, to help young people who have made wrong choices understand that they are part of a larger community.

“When they harm one person, they harm the community,” he said.

His prescription for a vibrant life is simple: be understanding, be kind and remember that life is not all about you.

“When we fold our arms, we can’t receive anything,” Perkins said. “But when we stretch out our arms and serve one another, we build community.”

At nearly 85, Arnold Perkins continues to prove that a life rooted in faith, service and love may be one of the most powerful foundations for healthy aging.

Next Week: Brenda Dennis Harris “The Body Temple.”

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Oakland Post: Week of August 26 – September 1, 2026

The printed Weekly Edition of the Oakland Post: Week of August 26 – September 1, 2026

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