1450
UNITED STATES.
202 Morrell, Stewart, & Co., Cincinnati , Ohio —
Manufacturers.
Sheet-iron made from iron ore the produce of Oliio.
203 & Past Liverpool, Ohio —Manufacturers.
Water vase, manufactured from fine brick clay.
204 Schumann, C. A., Cincinnati , Ohio —Producer.Specimens of Catawba wine.
205 Wisdom, Russel, & Whitman, Cleveland Ohio .Specimens of curled hair.
206 Western Fire Company, Cincinnati , Ohio —
Proprietors.
Hose carriage.
208 Holbrook & Stanley, Cincinnati , Ohio —
Manufacturers.
Winter strained lard oil, made from lard procured fromthe hog by the action of steam.
[Tliis lard oil is exhibited in the state in which it wasexpressed from the lard, without having been bleached.It is used for oiling machinery and wool, for burning,and for all other purposes where pure sperm oil is used.It will remain limpid at 33° Fahr., but at 28° it becomeswhite and thick. After standing in a glass vessel for alength of time, it loses its burning qualities, and will notrise in the wick to supply combustion. By age it finesitself.]
209 IIug-G-et, J., jun., Columbus , Ohio .
Joiner’s panel or grooving plough.
211 Brett, S. G., Gilmanton, Neio Hampshire —Manufacturer.
Shoe-pegs, manufactured by machinery.
213 Ross, Charles, Rochester , New York —Inventor.Improved portable mills.
[This mill, which is adapted to the grinding* of grain,paints, salt, &c., consists of a solid cone of burr-stone,revolving on a horizontal shaft, within a stationary con-cave of the same stone, composed of segments firmly se-cured in an iron shell. The two surfaces are accuratelyadjusted, and their distance regulated in the usual mannerby an adjusting screw.—S.]
214 Ambler & Avery, Neio York „
Artificial incorruptible mineral teeth.
215 Disturnell, J., New York —Publisher.
Maps of the United States and of the State of New
216 Brown, Solyman, New York .
Articles for dentistry.
217 Godwin, Thomas, New York —Inventor.Specimens of mechanical inventions.
218 Hilek, Selah, Neio York.
Stair-rods, copper rivets, &c.
222 Brooks, William T., Neiv York— Proprietor.
Jackson’s annunciator. Tliis invention is intended foruse in hotels, club-houses, mansions, steam-sliips, &c.,instead of the complication of bells as at present requiredfor the purpose of signalizing the servants from the differ-ent rooms. It is ornamental, and occupies but a smallspace. Each signal on the dial is distinct and separate,and remains exposed until the object for which it wasmade is answered. It can be readily attached to thepresent arrangement for bells, and is now extensively, andalmost generally, in use in the United States of America .It does away with the array of bolls now in use, sub-stituting in their place a compact piece of furniture, thatcan be fixed to the wall, or placed upon a stand or table.Its chief excellence consists, however, in its continuing toindicate the number of the room whence the call wasmade, until the servant has answered it. This of itselfis sufficient to give the bell-telegrapli an advantage overevery other system of the kind ever adopted.
223 Harrison, C. C., New York .
Specimens of daguerreotypes, exhibited for sharpness ofoutline, distinctness, and delicacy of shading. The cameraobscuras with wliicli they were taken accompany them.These instruments are exhibited both for their construc-tion, and for the perfect manufacture of their achro-matic glasses.
[The accuracy of manipulation in working an achro-matic lens is readily tested by the resulting daguerreotypeobtained from its employment. A slight departure fromthe true curve will render the picture ill-defined and im-perfect. In order to test the developing and definingpowers of a daguerreotype lens, which is most frequentlya double achromatic of various diameters, such objects asthe human head, or the fur of an annual, or an extremelyminutely printed page, are daguerreotyped, and the resultpretty accurately indicates the capabilities of the instru-ment.—R. E.]
224 Thompson, Wm. M., Neio York —Inventor.
Pictorial bookbinders’ stamps.
The method employed in the engraving of these stampsgives an effect of light and shade which is said to bealmost equal to copperplate engraving. 20,000 copies ondry cloth cases have been taken from some of these speci-mens before the production of the present impressions.
224a G-rieeith, J. W., Neio York.
Model of an ocean steamer.
Treatise on Marine and Naval Architecture.
225 PooleY, S. J., Neio York —Manufacturer.
Two miniature dinner sets : one set mounted with pearlshell handles, gold, &c.; the other set, with pearl shellhandles.