1. Wrap N’ Roll Automatic Silverware Roller Team There is No Spoon Patrick Goldrick Joel McKoy George Niou Ryan Patterson Lori Reinert

2. Agenda Review of Problem Statement Proposed Solution Subsystems Engineering Analysis Prototype Review and Demonstration Conclusion

3. Problem Statement Problem statement: Restaurants spend a great deal of time and money to have workers complete the tedious process of manually rolling silverware into a napkin  No product available to automate process Proposed solution: Develop a device that automatically groups one napkin, fork, and knife without use of an employee.

4. Proposed Solution: “Wrap N’ Roll” Folding Arm Subsystem Napkin Box Subsystem Roller & Track Subsystem Napkin Grabber Subsystem Utensil Container Subsystem

5. Napkin Platform Subsystem Key features  Elevated corner supported by spring  Friction on back surface  Integrated turn-around switch

6. Roller & Track Subsystem Key features  5’ steel track  Sushi roller  Controlled by brushless DC motor  Stainless steel rods to support sushi roller when extended

7. Roller & Track (cont’d)

8. Napkin Grabber Subsystem Key features  Pivoting arms  Rubber grippers  Spring-activated locking mechanism Mounted to sushi roller platform  No additional track or activation device needed

9. Napkin Grabber (cont’d) Napkin grabber reset by acrylic piece at opposite end

10. Utensil Container Subsystem Key features  Hinged in front to add utensils  Can tilt forward when loading  Ejection mechanism: Prototype  Contoured to fit shape of silverware  Knives must have relatively flat handle

11. Utensil Container Subsystem (cont’d)

12. Utensil Release

13. Napkin Folder Subsystem Key features  Metal bars pivot on an angle  Triggered by trolley

14. Napkin Folder Subsystem (cont’d)

15. Engineering Analysis T = 1.68 N-m = 14.9 lb-in  T = F (66.2 N) * r (0.0254 m)  15 rad/s = 143.3 RPM   v (0.38 m/s) / r (.0254 m) P = 25.2 W  P = T (1.68 N-m) *  (15 rad/s) Selected motor: Brushless DC Motor

16. Prototype Video Live demonstration

17. Conclusions Design capable of rolling one fork and one knife into a napkin Main subsystems include  Napkin platform  Trolley and track  Napkin grabber  Utensil containers  Napkin folders Main difference between prototype and design was type of material