The accommodation for discharging, lairing, slaughtering and storing at the foreign animals' wharfs, Birkenhead / by Francis Vacher.

  • Vacher, Francis, 1843-1914.
Date:
[1882]
Catalogue details

Licence: Public Domain Mark

Credit: The accommodation for discharging, lairing, slaughtering and storing at the foreign animals' wharfs, Birkenhead / by Francis Vacher. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    The charge at rooms is as follows : present made for the Put in one day and removed before mid- night of fol- lowing day. use of the chill For each suc- ceeding day or any pan thereof, s d. For Ox Calf Pig Sheep The refrigerator is figured in the cut. Its action is due to the familiar fact that when air is compressed and after- wards expanded, cold is produced. Air is received through the pipe a into the cylinders B, where it is compressed to 401bs. on the square inch, the temperature being thus raised to about 200“ Fahr. The compressed air is then carried into the refrigerator R, to the left, and here by the circula- tion of cold water in tubes the tempei’ature is quickly reduced. Thence the air is conveyed to the second re- frigerator r’, to the right, and its temperature further reduced, and finally it reaches the box x, when it is expanded. The machine is woi’ked by steam—w being the steam cylinder. The apparatus occupies wonderfully little space (a glance at the cut Avill show its compactness), and yet there is no difficulty in maintaining any requisite degree of cold in the hottest days in summer. It is important to note also that the air treated by the machine is perfectly dry. Any humidity it might contain when received would be frozen out in refrigerator r’. As Haslam’s machines have been fitted up in several large steamships carrying meat from America and Australia, their efficiency has been subjected to the best practical tests.