. A manual of veterinary hygiene. Veterinary hygiene. CAEE AND MANAGEMENT OF ANIMALS 829 plenty of room, and three horses may be worked abreast by means of a mechanical contrivance known as equalizing whippletrees (Fig. 205). The mechanism is adjustable, so that the horses may be placed closer together or wider apart; and it may also be arranged so as to save a weak or young horse. Fif. -Adjustable Whippletrees to enable three horses to work abreast {Ransomes, Sims and Jefferies). An equalizing chain and pulley for a plough attachment is shown at Fig. 206. The chain passes around a pulley so t
. A manual of veterinary hygiene. Veterinary hygiene. CAEE AND MANAGEMENT OF ANIMALS 829 plenty of room, and three horses may be worked abreast by means of a mechanical contrivance known as equalizing whippletrees (Fig. 205). The mechanism is adjustable, so that the horses may be placed closer together or wider apart; and it may also be arranged so as to save a weak or young horse. Fif. -Adjustable Whippletrees to enable three horses to work abreast {Ransomes, Sims and Jefferies). An equalizing chain and pulley for a plough attachment is shown at Fig. 206. The chain passes around a pulley so that the animals pull against each other, and none can escape their share of the work. Experiment shows that, generally speaking, a wide tyre to a wheel renders traction lighter than a narrow tyre ; the only advantage of a narrow over a broad tyre is on a very dusty road. The height of a wheel has also an influence in traction ; high wheels diminish draught, while a small wheel not only ©S!«>C!tS>IDO!SS5^®©=®^®=<S^3=S^®«^SS>S^3»@=®^= 1'-^Pai/ of Horses S^ Pair of IIoi-€es Fig. 206.—Equalizing Chain and Pulley for four horses to insure each animal takes its share of the work (Ransomes, Sims and Jefferies). increases it, but is more destructive to roads. It is an advantage to have wheels which ' track,' viz., the fore wheels the same distance apart as the hind, as the fore wheels in heavy ground prepare the road for the hind, and so reduce the force of traction. The weight in a four-wheeled waggon should be equally distributed over the four wheels provided they are of the same size, but if the front wheels be smaller than the hind, then less weight should be placed upon them. Digitized by Microsoft®. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, Frederick 1857-1929. New York
Size: 2787px × 896px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyorkwrjenkins
