American journal of pharmacy . nternalsides of A B and C D. Draw, next, the short lines S S across A B andC D, and the first crosspiece is finished. Take, now, a pair of com-passes and describe from line O P the largest possible circle betweenthe inner sides of A B and B D, and inside of angle i. This done,draw line X X at right angle with O P. TVo inches from this line,X, place again the point of the pattern as before, draw the angle ofcrosspiece 2, then lines S S, the circle of proper size, and so on as de-scribed, till all the crosspieces are located as shown in the sketch. Theexact size of
American journal of pharmacy . nternalsides of A B and C D. Draw, next, the short lines S S across A B andC D, and the first crosspiece is finished. Take, now, a pair of com-passes and describe from line O P the largest possible circle betweenthe inner sides of A B and B D, and inside of angle i. This done,draw line X X at right angle with O P. TVo inches from this line,X, place again the point of the pattern as before, draw the angle ofcrosspiece 2, then lines S S, the circle of proper size, and so on as de-scribed, till all the crosspieces are located as shown in the sketch. Theexact size of all the parts as well as their location being now given, it isthe carpenters work to execute the whole arrangement out of wood. The material is pine crosspieces are aboutthree-fourths of an inchthick and fastened on A Band C D by means ofscrews. There are, further,a number of staves to bemade as long as the distanceof B to D, and from i to 2inches broad, for the interposkion between the crosspieces, Fig. 3. %6 j^ 402 Exiractum Gossypii Radicis Fluid, {^^?d^;S^i^ The whole arrangement, when finished, is saturated with hot linseedoil and mounted either on four legs or fastened at a distance of about8 inches to the wall. To give an illustration, I will mention that the rack in my possession^is 13 feet long and has 12 openings for the reception of vessels^The inside width at one end is loj inches, at the other 4J can insert percolators from i pint to 10 gallons capacity. Thelatter ones (made of the heaviest kind of tinned iron) are frequentlycharged with 20 pounds of material and the appertaining menstruum,,and yet they do not show the least impression from their triangularsupports. The packing of the percolators is to be done before puttingthem into the rack. Finally, I recommend the adoption of the principle here representedalso for the well known iron filtering stands, thereby greatly increasingtheir usefulness without materially adding to their cost. Lar
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Keywords: ., bookcentury1800, bookdecade182, booksubjectpharmacy, bookyear1829
