Whitworth Quick Return Apparatus
Product Code : EL-AMLE-10643
Whitworth Quick Return Apparatus (code EL-AMLE-10643) is a bench-top demonstration of the Whitworth, or quick-return, mechanism, a revolving crank slider that gives a slow forward stroke and a fast return. Its drive disk, carrying the crank and coupling, works a driving rod and cylinder, crank angles appear on a graduated disc and on a base plate scale, and the stroke on a millimetre steel ruler; all axles run in ball bearings.
Get a quote: use the Add To Cart enquiry button below, or send your quantity and delivery location through the contact page.
Specifications
| Parameter | Detail |
|---|---|
| Use | Generating non-uniform stroke movement with a Whitworth (quick-return) mechanism |
| Motion | Slow forward movement and fast backward movement |
| Mechanism parts | Drive disk with crank and coupling, driving rod and cylinder |
| Crank | Rotary element with graduated disc for reading the angle |
| Connecting rod | Rigid bar with millimetre scale for measuring linear motion |
| Transfer bars | Two rigid bars for transferring motion |
| Angle setting | Angle set with the crank disk; angle scale integrated into the base plate |
| Stroke measurement | Millimetre steel ruler attached to the cylinder |
| Bearings | Ball bearings on all axles |
| Frame | Anodised aluminium, with painted steel panels |
| Main metallic elements | Stainless steel |
| Handling | Base plate with two handles for carrying and stacking |
| Applications | Tools, packaging and transport machinery |
| Product code | EL-AMLE-10643 |
| Manufacturer | Engineering Lab Equipment, Ambala, Haryana, India |
What Is the Whitworth Quick Return Apparatus Used For?
A quick-return mechanism is used where a machine works on its forward stroke and should lose as little time as possible coming back, the shaping machine being the classic example; the crank turns at a steady speed, but the working stroke takes up a larger part of each revolution than the return. With the unit on the bench, the student turns the drive disk in equal angle steps, reads each crank angle and the matching stroke position on the ruler, and plots stroke against angle. The curve shows the slow forward and fast backward movement, and the ratio of the angles taken by each stroke gives the time ratio.
What to Specify When Ordering
- Quantity — the number of quick return units required.
Frequently Asked Questions
What is a Whitworth quick-return mechanism?
It is a revolving crank slider that produces a non-uniform stroke, with slow forward movement and fast backward movement, and is used in tools, packaging and transport machinery.
How are the angle and stroke measured?
The crank, a rotary element with a graduated disc, gives the angle, which is repeated on the base plate's own angle scale, while a millimetre steel ruler on the cylinder measures the stroke.
What materials is the unit made from?
The frame is anodised aluminium with painted steel panels, and the main metallic elements are stainless steel; all axles are fitted with ball bearings.
Which parts make up the mechanism?
It consists of the drive disk carrying crank and coupling, a driving rod and a cylinder, with a rigid connecting rod carrying a millimetre scale and two further rigid bars that transfer the motion.
Why is the return stroke faster?
The crank turns at constant speed, but the geometry of the mechanism means the forward stroke occupies a larger angle of crank rotation than the return, so the return is completed in less time.
OEM Manufacturer
Buyers of the Whitworth Quick Return Apparatus deal directly with its maker, Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd), whose works are at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests applied mechanics apparatus for statics, friction, machines and mechanisms, supplies engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and builds to institution-specific requirements on request. Tender details are on the Tenders/OEM page.
Related Applied Mechanics Equipment
- Slider Crank Mechanism — crank disk, connecting rod and lockable pivoting cylinder model with three crank radii.
- Crank and Connecting Rod Apparatus — crank disk, connecting rod and fixed cylinder unit with three crank radii and millimetre stroke ruler.
- Four Bar Chain Apparatus — four-bar linkage unit with adjustable pivot joints and input and output angle scales on a base plate.
See the full Applied Mechanics Lab Equipment range or all Mechanical Engineering Lab Equipment.
Request a Quote
For this and other applied mechanics lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. Quotations are given on request: send the number of quick return units required and your delivery location through the contact page, or add the Whitworth Quick Return Apparatus to the enquiry cart from this page.
Last updated: October 2026
