Our Achievements & Innovations

Hewitt Robins International has a wealth of history, design and innovtions over the years.

 

Conceived in 1891 Thomas Robins, founder of Hewitt Robins began devising the first innovative belt conveyors.

Site of the First Belt Conveyor

1891
 

First vibrating screen designed by Thomas Robins, founder of Hewitt Robins International.

1912
 

"Circle-throw", uniform motion screen.

1926
 

High-speed mechanical screen, oil lubricated, with variable stroke. 

1931
 

In 1935 Hewitt Robins supplied the largest shakeout in the world! This Hewitt Robins 12m x 8m Heavy Duty Foundry Shakeout deck consisted of 6 individual shakeout frames handling a combined deck load of 60 ton.

Hewitt Robins - Our History 1935

1935
 

Elliptical stroke, horizontal screen.

Horizontal Screen

1936
 

"Slip-fit-on-the-shaft" unitized bearing flange assembly

1940
 

Start-Stop bounce restrictor, floating and friction type. 

1942
 

Parallel wire dewatering screen.

1943
 

Heavy-duty, two-bearing screens and scalpers

1945
 

High-strength torqued boiling system

1952
 

Electrical strain gauge, stress-coat and photoelastic stress measurement in design analysis

1953
 

Eight-bearing, four-shaft vibrator 

Special-Duty (1400 F) Hot Sinter Screen 

Screen cloth tension wedge.

1957
 

Vari-grid grizzly 7' and 8' wide, and 20' long two-bearing screens

1958
 

Parallel rod deck with zipper-type attachment
Analytical analysis of "off-motion" phenomenon

1960
 

Back in the 1960's Hewitt Robins designed and produced Mobile Washing & Screening Plants called 'Washmore'. These plants came in three sizes to handle either 60 cu.m/h, 100 cu.m/h or 150 cu.m/h. The plants consisted of twin axel frame, revolving scrubber, a three-deck washing screen, and screw conveyor.

Hewitt Robins - Washmore 1960

1960
 

X-brace cross-members for a more rigid vibrating frame. 

1961
 

Self-supporting perforated and solid deck panels for shakeouts and screens.

1962
 

In 1967 Hewitt Robins supplied 16 Screens to a major steel plant in Sweden. This picture shows four 2E13 2.5m x 8m Double Deck Low Angle Screens which are still in operation today.

Hewitt Robins - Double Deck Screens 1967

1967
 

Super-duty (200 F) hot sinter briquette screen

Hot Sinter Screen

1968
 

Twelve-bearing, six-shaft vibrator capable of vibrating 50-ton unit with 1/2 stroke at 700 RPM to provide 6000 TPH scalping capacity.

1969
 

Quick wedge clamp system for attaching cloth support bars to crossmembers. 
Tubular cross member bars (adds strength in all directions)

1971
 

Double VIBREX (Two synchronised vibrators for increased stroke and bearing life)

Double VIBREX

1974
 

Vibrating no-bake foundry sand reclaimer

1976
 

Triple deck 10ft by 24ft developed for high volume screen applications. Many configurations now available.

1982
 

Back in 1985, this advert was placed in a leading mining publication.

Hewitt Robins - 1985 Advert

1985
 

In 1988 Hewitt Robins supplied four Low Angle Screens for a dredger in the Netherlands. These machines were handling a combined feed of 700tph of dredged material, which was washed on the first two Horizontal wash screens. The sand was dewatered on the final two dewatering screens at a combined feed rate of 500tph to allow it to be dry enough to be conveyed to shore.

Hewitt Robins - 1988

1988
 

Development of High Energy Screen with G-Force up to 6.5G for problematic,  difficult to screen materials

1989
 

Hewitt Robins factory in Glasgow, busy getting 12 horizontal screens ready to export for the Dam project in Pakistan.

Hewitt Robins - Glasgow Factory in 1989

1989
 

2 Bearing Vibrator Pod called the Quad- Unit designed for easy maintenance and increased bearing life.

Quad V Vibrating Pod

1992
 

Designed and developed widescreens up to 3.6m in width and 10m in length incorporating the Quad-V Vibrator Unit

1995
 

In 1995, this Hewitt Robins 2E13 2.5m wide x 7.5m long Extra Heavy Duty Double Deck Grizzly Scalper was going through the workshop in Glasgow. This monster was handling 3000tph of -1.5m lumps of limestone and was scalping out at 200mm on top deck using grizzly bars and 40mm on the bottom deck using a punched plate.

Hewitt Robins - Heavy Duty Double Deck Screen 1995

1995
 

Following the takeover of W.S. Tyler, the British management team acquired the remaining shares in the company to become sole owners of Hewitt Robins International Ltd.

1999
 

Hewitt Robins develop a modular plant design incorporating screens, feeders and crushers for complete plant set up. 

Modular Plant Design

2002
 

Wheel mounted mobile crushing and screening plants commissioned and installed worldwide

2006
 

Back in 2010, Hewitt Robins supplied a replacement 2.5m wide x 6.0m long Double Deck Iron Ore Screen for a Steel plant in Venezuela. This Hewitt Robins screen was handling 1200tph of Iron Ore and the original Hewitt Robins screen was in operation since 1972.

Hewitt Robins - Double Deck Iron Ore Screen

2010
 

Hewitt Robins was acquired by Tata to implement Hewitt Robins design into the Indian market and use their the huge experience and knowledge.

Hewitt Robins International Head Office

2010
 

Self-Synchronised 2QV vibrator unit to produce linear motion screening without timing belts or gears.

2013
 

The design of the biggest, heaviest duty shakeout in the world handling a total deck load of 160ton.

Heaviest Duty Shakeout in the World

2015