11. Mormon Helping Hands operates under the direction of local bishops. 12. In 1885 Baumann purchased a hand operated biscuit machine for ?5 from another baker, Plowright. 13. A central jack is powered by hand operated hydraulics. 14. In larger bridges, engines control the span's movement, though the Maroochy bridge is hand operated . 15. In small boats the pump is often hand operated . 16. In 1925, a hand operated windshield wiper was added. 17. The "'blood pump "'was patented in 1855 by Porter and Bradley and was hand operated . 18. Hand operated points and semaphore signals, operated by Trafford Park junction signal box, remained until closure.19. At 12 he spent some of his savings to buy a small hand operated printing press. 20. In cooler wetter areas pulling is the preferred method and hand operated broom pullers are available.