Search Manuscripts/Mixed Material
-
Manuscript/Mixed MaterialImage 1 of Bulletin by Alexander Graham Bell, July 22, 1901 1901, July 22 Monday At Beinn Bhreagh. A FEW THOUGHTS UPON KITES. Umbrella ribs are now made of tin instead of whalebone. Tin ribs of this sort would form an admirable framework...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 2 of Bulletin by Alexander Graham Bell, July 22, 1901 2 elastic framework for a kite. I do not know anything better, but we require to learn how to work it. It lacks, however, rigidity. If we use a piece sufficiently thick...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 3 of Bulletin by Alexander Graham Bell, July 22, 1901 3 Pine wood (100 × 3 × 3 sq. cross section) 427 grms Brass Pipe (100 long, about 2.5 cm. diameter) 466 grms Aluminum pipe (100 long, about 1.5 cm. diameter) 145...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 4 of Bulletin by Alexander Graham Bell, July 22, 1901 4 SCALE TERMS MILES PER HOUR METERS PER SECOND LBS. PER SQ. FT. KILOS. PER SQ. M. 0 Calm 0 0 0 0 1 Very Light Brz 2 1 0.03 0.15 2...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 5 of Bulletin by Alexander Graham Bell, July 22, 1901 5 1901, Nov. 29 Friday At 1331 Conn. Ave. (Copied from Home Notes, 1901, Nov. 2, pp. 22,24,26,28). 1 METER CELLED COMPOUND KITE OF UNIT CELL 25cm. Length of KITE No. of...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 6 of Bulletin by Alexander Graham Bell, July 22, 1901 6 3 METER CELLED KITE (composed of 25 cm. cells). LENGTH of KITE No. of layers of cells No. of unit cells WEIGHT in KGMS. SURFACE in sq.m. Wt. available for strengthening...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 7 of Bulletin by Alexander Graham Bell, July 22, 1901 7 HEXAGONAL KITE LENGTH of KITE No. of layers of cells No. of Unit cells. WEIGHT in kgms. SURFACE in sq. m. Wt. available for strengthening f'm w'k. LOAD at 400 gms....
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 8 of Bulletin by Alexander Graham Bell, July 22, 1901 8 1902, Feb. 17 Monday At 1331 Conn. Ave. The following table will save much unnecessary labor in calculating flying weights and absolute weights of given aeroplanes:— The following diagram shows graphically...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 9 of Bulletin by Alexander Graham Bell, July 22, 1901 9 A light kite should not weigh more than 400 gms. per sq. Metre of surface. A compound kite should consist of light cells with a skeleton of strong material. The whole...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 10 of Bulletin by Alexander Graham Bell, July 22, 1901 10 In utilizing the table, on p. 561 it will be well to remember that we can calculate the cubical contents of the material employed by dividing its weight in grams by...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 11 of Bulletin by Alexander Graham Bell, July 22, 1901 11 On Feb. 2, 1902, I weighed some specimens of silk — materials for dresses. See Home Notes pp. 10 and 11. A A piece of red silk 315 cm. long and...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 12 of Bulletin by Alexander Graham Bell, July 22, 1901 12 1902, Feb. 19 Wednesday At 1331 Conn. Ave. Mr. Zable obtained for me yesterday specimens of different materials to examine;— Two rods of bone and following kinds of wood: Ash, bass-wood,...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 13 of Bulletin by Alexander Graham Bell, July 22, 1901 13 On the following page I give a graphical diagram showing the relative stiffness of the different kinds of wood. The lines indicate by their length the weights supported by the slips...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 14 of Bulletin by Alexander Graham Bell, July 22, 1901 14 The cedar slip weighed 3.5 gms., the hickory slip 5 gms. The hickory strip supported 5 times the weight supported by the cedar strip, and weighed itself less than one and...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 15 of Bulletin by Alexander Graham Bell, July 22, 1901 15 240 not 250 gms. White Pine 250 not 260 “ Walnut 260 not 270 “ 270 not 280 “ Cabinet Oak, Quartered Oak 280 not 290 “ 290 not 300 “...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 16 of Bulletin by Alexander Graham Bell, July 22, 1901 16 (probably the cube) it is obvious that it would be advisable in the manufacture of a kite to use the thickest sticks consistant with proper flying weight. I have decided to...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 17 of Bulletin by Alexander Graham Bell, July 22, 1901 17 table. The weights were increased successively by 50 gms. at a time. The sticks would not support 50 gms. more than shown below without touching the table. The experiment was tried...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 18 of Bulletin by Alexander Graham Bell, July 22, 1901 18 Spruce (100 × 1 × 1) weighs 43 gms. and supports 500gms. Maple (100 × 1 × 1) weighs 73 gms. and supports 487.5 gms. Here the lighter wood supports the...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 19 of Bulletin by Alexander Graham Bell, July 22, 1901 19 The above diagram illustrates graphically the table on p. 594 in which the specimens of wood are arranged in the order of the ratio of weight to load. The figures refer...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 20 of Bulletin by Alexander Graham Bell, July 22, 1901 20 While it is true that a framework made of light wood of the same weight as a heavy wood would be of greater thickness (and {Begin deleted text}hone{End deleted text} hence...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 21 of Bulletin by Alexander Graham Bell, July 22, 1901 21 But the two fragments remained practically straight after the stick was broken. The fragments of the maple stick also seemed straight. The hickory did not break completely through, and the two...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 22 of Bulletin by Alexander Graham Bell, July 22, 1901 22 In my Home Notes, pp. 87, and 88, I calculate the weight of a double frame of birch for a triangular frame of 200 cm. made of 25 cm. cells. Total...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22
-
Manuscript/Mixed MaterialImage 23 of Bulletin by Alexander Graham Bell, July 22, 1901 23 make a more careful calculation of the weight of such a frame and it may be possible that we could make it of birch and have it come within our limits...
- Contributor: Bell, Alexander Graham
- Date: 1901-07-22