RAMELLA & C.
Textile machines
made in Italy since 1947
made in Italy since 1947
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The carding machine is the heart of the spinning mill.
After the scoured fiber has been opened with the picker, the carder disentangles the unorganized tufts and aligns the individual fibers into a parallel arrangement.
The carder achieves this by passing the fibers between differentially moving rollers covered with card clothing.
As the fiber moves through the machine, the carding process ejects short fibers and begins blending different fiber types or colors.
The most sought-after PDF under Govorov's name is Problems in Mathematics , written alongside P. Dybov, N. Miroshin, and S. Spiridonova.First published in Russian and later translated into English by Mir Publishers, this book became a global staple for competitive exam preparation.
When users search for Govorov's mathematical texts, they are usually looking for the seminal book co-authored with P.T. Dybov, N.V. Miroshin, and S.F. Smirnova. In English-speaking regions, this text is widely known as (often published by Mir Publishers). Structure of the Book
The search for a "V. Govorov mathematics pdf" is a testament to the enduring value of this exceptional problem book. More than just a collection of exercises, it represents a structured, rigorous approach to learning mathematics. For the most reliable digital access, borrowing the book from the is the best option. However, to fully realize its benefits and support the authors' work, investing in a physical paperback edition from a publisher like Arihant is highly recommended. With a strategic and disciplined approach, "Problems in Mathematics with Hints and Solutions" can be your most trusted companion for building a powerful and lasting foundation in mathematics.
: The oral examination problems are excellent for testing your conceptual understanding. Try to explain your solutions to these problems out loud as if you were in an exam setting.
Nikolay V. Govorov (1928–1981) was a distinguished Soviet mathematician. He was born on December 5, 1928, and earned his Doctor of Physical and Mathematical Sciences degree in 1967. After a long career teaching at the Novocherkassk Polytechnic Institute, he became the Head of the Department of Mathematical Analysis at Kuban' State University, a position he held until his untimely death in 1981. His original research in complex analysis earned him a doctorate and continues to be highly cited.
Unlike traditional question banks that only provide final numerical answers, Govorov provides strategic hints or full breakdowns to teach you how to approach dead ends.
Downloading the PDF is only the first step. To avoid "digital hoarding," follow this 4-step methodology:
The book is celebrated for its rigor and depth. It covers subjects that form the foundation of high school and early university mathematics. The problems are curated from 120 different higher education institutions, making it an excellent resource for competitive entrance examinations. Core Focus Areas The book is structured into four primary parts:
There are three primary reasons students search for a PDF version of Govorov’s work:
If you are searching for digital copies of Govorov's books, consider the following avenues:
For the self-learner, the engineering aspirant, or the mathematics undergraduate who wants to develop genuine problem-solving intuition, Govorov’s work is a treasure. Unlike modern "test prep" books that teach you to recognize patterns, Govorov forces you to invent strategies.
. Originally published by Mir Publishers in the USSR, it is now widely used for competitive exam preparation like the IIT-JEE Overview of the Guide
The PDF version is readily available online through academic archives and document-sharing platforms. Where to Find Problems in Mathematics (PDF)
This is the most reliable and legal source for out-of-print Mir Publishers books. Many volunteers have scanned high-quality copies of "Problems in Mathematics" here.
The Ramella carder has a long conveyor for feeding the fiber into the inlet, after which the fiber is carded by the large main drum and 5 worker rollers.
At the exit the doffer roller and high-speed fly comb create a fiber web, which can be rolled to produce a batt or pulled through a twister to produce sliver.
The carder is mounted on a solid steel support structure and is completely enclosed by an external safety cage.
The carder can be equipped with an automatic feeder and/or a can coiler.
We produce carding machines with 2 different working widths:
• 80 cm (32") suitable for small production facilities and laboratories
• 100 cm (40") the standard ideal for typical small mills with medium production
The productivity of the carder depends on the type of fiber worked and the temperature and humidity conditions in the mill, but, for example, sheep wool run through the 100 cm (40")
carder can generally be processed at a rate of about 6 kg (13 lb) per hour.
For maximum flexibility the user can produce either sliver or batts from the carded fiber.
In the first case, it is possible to obtain a continuous ribbon (sliver) that can be further processed by drafting and spinning in order to make yarn.
In the second case, the web can be rolled onto a cylinder to create a batt of desired thickness.
Both output devices are included with the standard version of the machine.
With the Ramella carder, several output choices are available.
• Machine mounted twister and batt roller. This is the most economical choice for those who will produce either sliver or batts without switching often between the two.
• Trolley mounted twister, batt roller and rug yarn maker. The wheeled trolley cart allows easy switching between the sliver twister and the batt roller without the need to reconfigure the machine or lift the heavy roller.
This choice is ideal for those who will regularly produce sliver, batts and rug yarn.
The batt roller is available in 2 sizes: circumference 100 cm (40") and circumference 200 cm (80").
With the basic version of the Ramella carder you can create sliver and batt from raw fibers but we can also offer optional machines to make the process easier and more automated.
• The automatic feeder weighs the fibers and creates a uniform layer on the carder conveyer, which minimizes the manual work necessary to load the carder.
• The can coiler winds the sliver into a compact, continuous coil, which facilitates transport of the fiber from one machine to the next and allows uninterrupted feeding of the sliver into the drafter or spinner.
We have designed a unique real-twist system that strengthens the output sliver and prevents sliver breakage, especially when carding low cohesion fibers such as alpaca.
This system consists of a rotating funnel with varied speed control, allowing the user to precisely define the amount of twist added to the sliver, which then enters a set of rollers that assist in delivering the sliver to the coiler can.
Three different funnel sizes come standard with the machine, allowing maximum control of the sliver thickness.
The Ramella carder easily handles typical fiber staple lengths from 4 cm (1.5") to 15 cm (6"), with some mills also processing 20-25 cm (8-10") suri fiber.
With standard card clothing, fine fibers with a thickness as little as 2 to 3 microns can be carded.
If required, we can also furnish a carder with a finer wire designed specifically for processing extra-fine fibers, as low as 0.7 micron.
Small production mills use our carding machine to process fibers like sheep wool, alpaca (both huacaya and suri), angora, cotton, yak, bamboo and hemp.
Industrial laboratories test synthetic fibers such as polyester, polyethylene, nylon, and aramid.
The carder is driven by 4 independent motors that are electronically controlled by inverters.
However, the exit speed is electronically coupled to the inlet speed, allowing the user to increase or decrease the carding productivity during a run without changing the weight of the sliver.
The electronic controllers are contained in a panel with filtered ventilation to protect the sensitive electronic parts.
The control dials are easily accessed on the outside of the panel and every parameter can be easily adjusted on a large touchscreen.
Button panels located on both sides of the carder allow simple starting and stopping of the machine at both the entry and the exit.
For maximum safety, our carding machine is fully enclosed by an external frame made of anodized aluminum, which is lightweight, yet sturdy, and resists corrosion.
The protective doors are hinged so they can be quickly and easily opened for cleaning and maintenance.
Three automatic safety devices prohibit the doors from being opened while the machine is running.
The safety structure protects the worker while allowing a wide view and the complete control of the machine during the process.
The carding machine is equipped with a high-speed fly comb that removes the fibers from the doffer roller.
The structure of the fly comb is balanced so as to reduce vibrations and minimize wear of the bearings.
The lever control allows easy adjustment and quick maintenance of the blade.
The fly comb is mounted on oscillating bearings with seals that can be easily lubricated, with 4 screws to allow accurate positioning with respect to the distance from the doffer cylinder.
The fly comb blade connectors are covered with a smooth tin plate that eliminates rough surfaces where fiber could catch, ensuring the formation of an even fiber web at the exit.
• An extremely solid and stable structure, made to last.
• The components are machined for maximum precision and quality.
• The cylinders are driven independently by 4 motors with electronic speed control.
• The rigid card clothing is durable and allows quick cleaning after each carding run.
• All cylinders are mounted on sealed ball bearings without bushings.
• A modern design specifically created to meet the needs of small production mills and laboratories.
In carding machines two factors are critical, the solidity of the structure and the precision of the mechanical parts.
The Ramella carder is characterized by a 4 cm (1.6") thick, fully machined steel frame connected by solid steel crossbeams. This structure is approximately 10 times stronger than one formed from welded tubes.
Furthermore, all of the rotating parts are precisely machined and are equipped with micro adjustment, which permits exact roller positioning at micron distances, but more importantly, once the positioning is set, it does not move, resulting in both a consistent, high quality product and longer machine life.
Built to last, all surfaces are painted or chemically treated to resist corrosion.
Every single detail of the Ramella carding machine has been designed using modern 3D CAD.
All of the components have been designed to obtain a high-performance machine with an excellent quality/price ratio.
Even the electric panel has been designed in order to make the use of the carder simple and intuitive.
We use CNC lathes, milling machines and modern laser cutters in the production of the carder components that we make in-house.
The steel used is of premium quality and all of the commercial components come from suppliers with well-known brands.
In addition to the features mentioned above many other details give value to our carding machine:
• The use of sealed bearings instead of bushings ensures a long machine life and continued quality output for many decades.
• The supports of the worker and stripper rollers have an upper cover that can be easily removed for quicker maintenance.
• The use of rigid card clothing allows the machine to quickly self-clean after each run.
• A solid input unit with 3 rollers plus a licker-in roller enhances fiber tuft opening, resulting in effective carding with just one pass.
• Spare parts are readily available on the market.
Electric specifications:
Installed power: 4.5 kW + 0.4 kW (Can coiler)
Power consumption: 3.4 kW
Single phase 230V 50/60Hz (customizable)
Size (length x width x height):
Carder 800 mm: 3110 mm x 1770 mm x 2200 mm (122'' x 70'' x 87'')
Carder 1000 mm: 3110 mm x 1970 mm x 2200 mm (122'' x 78'' x 87'')
Download CAD layout drawing - Carder version 800 mm - 32'' (PDF version)
Download CAD layout drawing - Carder version 1000 mm - 40'' (PDF version)
The most sought-after PDF under Govorov's name is Problems in Mathematics , written alongside P. Dybov, N. Miroshin, and S. Spiridonova.First published in Russian and later translated into English by Mir Publishers, this book became a global staple for competitive exam preparation.
When users search for Govorov's mathematical texts, they are usually looking for the seminal book co-authored with P.T. Dybov, N.V. Miroshin, and S.F. Smirnova. In English-speaking regions, this text is widely known as (often published by Mir Publishers). Structure of the Book
The search for a "V. Govorov mathematics pdf" is a testament to the enduring value of this exceptional problem book. More than just a collection of exercises, it represents a structured, rigorous approach to learning mathematics. For the most reliable digital access, borrowing the book from the is the best option. However, to fully realize its benefits and support the authors' work, investing in a physical paperback edition from a publisher like Arihant is highly recommended. With a strategic and disciplined approach, "Problems in Mathematics with Hints and Solutions" can be your most trusted companion for building a powerful and lasting foundation in mathematics.
: The oral examination problems are excellent for testing your conceptual understanding. Try to explain your solutions to these problems out loud as if you were in an exam setting.
Nikolay V. Govorov (1928–1981) was a distinguished Soviet mathematician. He was born on December 5, 1928, and earned his Doctor of Physical and Mathematical Sciences degree in 1967. After a long career teaching at the Novocherkassk Polytechnic Institute, he became the Head of the Department of Mathematical Analysis at Kuban' State University, a position he held until his untimely death in 1981. His original research in complex analysis earned him a doctorate and continues to be highly cited.
Unlike traditional question banks that only provide final numerical answers, Govorov provides strategic hints or full breakdowns to teach you how to approach dead ends.
Downloading the PDF is only the first step. To avoid "digital hoarding," follow this 4-step methodology:
The book is celebrated for its rigor and depth. It covers subjects that form the foundation of high school and early university mathematics. The problems are curated from 120 different higher education institutions, making it an excellent resource for competitive entrance examinations. Core Focus Areas The book is structured into four primary parts:
There are three primary reasons students search for a PDF version of Govorov’s work:
If you are searching for digital copies of Govorov's books, consider the following avenues:
For the self-learner, the engineering aspirant, or the mathematics undergraduate who wants to develop genuine problem-solving intuition, Govorov’s work is a treasure. Unlike modern "test prep" books that teach you to recognize patterns, Govorov forces you to invent strategies.
. Originally published by Mir Publishers in the USSR, it is now widely used for competitive exam preparation like the IIT-JEE Overview of the Guide
The PDF version is readily available online through academic archives and document-sharing platforms. Where to Find Problems in Mathematics (PDF)
This is the most reliable and legal source for out-of-print Mir Publishers books. Many volunteers have scanned high-quality copies of "Problems in Mathematics" here.
Every single detail of the Ramella carding machine has been designed using modern 3D CAD.
All of the components have been designed to obtain a high-performance machine with an excellent quality/price ratio.
Even the electric panel has been designed in order to make the use of the carder simple and intuitive.
We use CNC lathes, milling machines and modern laser cutters in the production of the carder components that we make in-house.
The steel used is of premium quality and all of the commercial components come from suppliers with well-known brands.
In addition to the features mentioned above many other details give value to our carding machine:
• The use of sealed bearings instead of bushings ensures a long machine life and continued quality output for many decades.
• The supports of the worker and stripper rollers have an upper cover that can be easily removed for quicker maintenance.
• The use of rigid card clothing allows the machine to quickly self-clean after each run.
• A solid input unit with 3 rollers plus a licker-in roller enhances fiber tuft opening, resulting in effective carding with just one pass.
• Spare parts are readily available on the market.
Electric specifications:
Installed power: 4.5 kW + 0.4 kW (Can coiler)
Power consumption: 3.4 kW
Single phase 230V 50/60Hz (customizable)
Size (length x width x height):
Carder 800 mm: 3110 mm x 1770 mm x 2200 mm (122'' x 70'' x 87'')
Carder 1000 mm: 3110 mm x 1970 mm x 2200 mm (122'' x 78'' x 87'')
Download CAD layout drawing - Carder version 800 mm - 32'' (PDF version)
Download CAD layout drawing - Carder version 1000 mm - 40'' (PDF version)
