Whitworth Quick Return
Product Code : JA-PLE-4189
The Whitworth Quick Return (SKU JA-PLE-4189) is a working model of the standard quick return mechanism, in which the cutting stroke of a tool is slower than its return stroke, as on shaping and slotting machines. The links are mounted on an A3 board for class demonstration. This Whitworth quick return mechanism model is one of a series of sixteen board-mounted mechanisms used in theory of machines, workshop technology and engineering drawing teaching.
Specifications
The crank carries a pin C that can be set at a chosen radius to drive the slotted link and so vary the stroke, the tool is attached to the guided slider A, and the fixed distance OP gives a fixed ratio of cutting to return stroke.
| Product | Whitworth Quick Return |
| SKU | JA-PLE-4189 |
| Mechanism | Whitworth quick return, standard mechanism for a quick return motion |
| Crank pin | Pin C, settable at a chosen radius to vary the stroke |
| Output | Tool attached to the guided slider A |
| Stroke ratio | Fixed ratio of cutting to return stroke, set by the fixed distance OP |
| Board | A3 size, white melamine |
| Moving parts | Amber-coloured Perspex, pivoted with hollow rivets |
| Documentation | Supplied with an instruction manual |
Applications of the Whitworth quick return mechanism model
Students turn the crank at a steady rate and watch the tool slider move slowly on the cutting stroke and quickly on the return, which explains how shaping and slotting machines save idle time.
- Demonstrating quick return motion and the ratio of cutting to return stroke
- Showing how the crank-pin radius changes the length of stroke
- Plotting slider displacement against crank angle
- Comparing the Whitworth mechanism with the crank and slotted lever
- Theory of machines and workshop technology classes in polytechnics, TVET institutes and engineering colleges
Scope of supply and ordering
The listing covers the Whitworth quick return mechanism on its A3 melamine board with an instruction manual. The stand, board clips and collet pencil are listed as a separate item. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation according to the number of models and the delivery destination. JaincoLab supplies single models, full mechanism sets for technical institutes and export orders to buyers in Africa, the Middle East and South and South-East Asia.
Frequently asked questions
Why is the cutting to return stroke ratio fixed?
Because the distance OP in the mechanism is fixed, the ratio of cutting stroke to return stroke does not change.
Can the length of stroke be changed?
Yes. The crank pin C can be set at a chosen radius, which varies the stroke of the slotted link and tool slider.
Related products
- Crank and Slotted Lever
- Crank and Connecting Rod
- Slotted Link (Scotch Yoke)
- Toggle with Single and Double Action
All sixteen mechanisms are listed in Physics Lab Equipments from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the Whitworth Quick Return model, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Tender and project enquiries can be sent through the tenders page.
