Abridgments of the specifications relating to preservation of food / printed by order of the Commissioners of Patents.

Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Abridgments of the specifications relating to preservation of food / printed by order of the Commissioners of Patents. Source: Wellcome Collection.

    32/62 page 24
    Fifth, Avoiding any cover to the fire, by causing “ the draft “ which heats the hot plate to pass from a point of the fire lower “ down than the ordinary level of the coals.” Sixth, Constructing “ fall-down oven doors,” with “ a pendant “ handle to the door, having a short lever through” the door, so that “ this handle, when at right angles with the door, forms an “ efficient leg for supporting the door in a horizontal position when “ open.” Seventh, Feeding boilers by a tap having a ball “open at the “ bottom and connected with a steam pipe from the boiler by “ means of an elastic tube attached to the bottom of the ball a slight pressure of steam generated in the boiler displaces the water, and causes the ball “ to rise and open the feed tap.” Eighth, Getting the parts of a range square by using “ a set screw” “ instead of the ordinary chipping bit.” Ninth, Constructing “ apartments with perforated bottoms, '“ having air-tight chambers underneath such perforated bottoms,” for preserving corn or other food, so ‘Ghat currents of air can “ be conveniently forced through such materials.” Tenth, Burning “ clay slabs by means of hot air, and heating “ the air which feeds the fire of one kiln by causing it to pass “ through the hot bricks or slabs in another.” Eleventh, Improving roasting jacks by “ making the bottom “ cap to drop through the tube, and fixing it in that position by “ means of a side screw.” Twelfth, Manufacturing jack chains by “ first coiling a rod or “ wire of iron of the required size on a spit, the one edge or side “ of which is wider than the cross section of the required link;” cutting “the several coils asunder at the part which corresponds with the wide edge of the spit;” heating them and welding them by means of a die or stamp. This process is claimed for the manufacture of other chains. [Printed, 3d. See Mechanics’ Magazine, vol. 51, p. 328; and Patent Journal, vol. 8, p. 6.] A.D. 1849, November 17-—N° 12,850. BRINDLEY, William.—The first part of this invention relates to the producing of ornamental designs in papier-mache; and second, the preserving of vegetable substances. “ Leaves and “ flowers and stalks of plants ” are to “ be placed between oil “ paper and then stoved ” at a heat between 250° and 300° Fahren-
    digitised image 1
    digitised image 2
    digitised image 3