XIV.-Lumber, including Machines and Tools for Preparing and Manufacturing. 34

XV.-Stone and Clay Manufacture.......

XVI-Leather, including Tanning, Dressing, and Manufacture..

35

36

XVII.-Household Furniture, Machines and Implements for Domestic Purposes.. 36

XVIII.-Arts, Polite, Fine, and Ornamental...

XIX. Fire-arms and Implements of War..

XX.-Surgical and Medical Instruments...

XXI-Wearing Apparel, including Implements for Manufacturing

XXII.-Miscellaneous....

List of Designs that have expired in the years 1849, 1850, and 1851...

IV. ALPHABETICAL LIST OF EXPIRED PATENTS.

Alphabetical List of Persons whose Patents have expired during the year 1851, with their

Inventions or Discoveries.....

V. CLASSIFIED LIST OF PATENTS ISSUED.

37

37

38

38

38

39

40

Classified list of Patents for Inventions and Discoveries granted during the year 1851.... 47

I-Agriculture, including Implements and Operations....

II.-Metallurgy and Manufacture of Metals......

III.-Manufacture of Fibrous and Textile Substances...

IV. Chemical Processes, Manufactures, and Compounds....

V.—Calorifics, comprising Lamps, Fire-places, Stoves, &c..

VI.-Steam and Gas Engines....

VII.-Navigation and Maritime Implements....

VIII.-Mathematical, Philosophical, and Optical Instruments..

47

49

52

54

XIV.-Lumber, including Machines and Tools for Preparing and Manufacturing. 66

XV.-Stone and Clay Manufactures.....

68

XVI.-Leather, including Tanning, Dressing, and Manufacture.....

69

XVII.-Household Furniture, Machines and Implements for Domestic Purposes. 70

XXI.-Wearing Apparel, including Implements for Manufacturing..

VI. ALPHABETICAL LIST OF PATENTS ISSUED.

Page

Alphabetical list of Patentees for the year 1851, with the names of their Inventions or

Discoveries.

83

VII. INVENTIONS AND CLAIMS.

Inventions and Claims for which Patents were granted during the year

Inventions and Claims for which Patents were reissued during the year 1851.

Disclaimers entered during the year 1851.

VIII. EARLY AMERICAN INVENTIONS.

......

1851.... ...... 306

306

329

Papers and Abstracts relating to early American Inventions, from the archives of the

States....

333

IX. COMMUNICATIONS.

On Chinese Horology, with suggestions on the form of Clocks adapted to the Chinese

market. By D. J. Macgowan, M. D.

Borden's Meat Biscuit.

X. THE WORLD'S EXPOSITION.

The World's Exposition of 1851..

Report on the World's Exposition. By Edward Riddle....

I. Chemical and Pharmceutical Products.....

Specimens of Wood preserved by chemical process...

Vegetable and Animal Substances used in manufactures..

Manures......

II.-Mining and Minerals..

335

343

345

347

347

Mining, Quarrying, Metallurgical Operations, and Mineral Products... 383

Machines for direct use, including Carriages, Railway and Marine

Mechanism......

440

Manufacturing Machines and Tools....

459

Civil Engineering, Architecture, and Building Contrivances..........

Naval Architecture, Military Engineering, Ordnance, Armor, and

Accoutrements..

465

470

478

Conclusion...

XI. INFORMATION TO APPLICANTS FOR PATENTS.

Of the Forms prescribed by law, and the Rules adopted by the Office...

For what Patents may be granted....

Of the Duration of Patents and the Penalty for illegally Stamping Articles...

Of the Repayment of Money deposited by mistake...................

Of granting anew lost Patents, and such as were destroyed by the fire of 1836.

Of Assignments....

Of the Fees-how payable.....

Of Patent Agents......

Of Correspondence...

Patent Office Reports..

LETTER

ог

THE COMMISSIONER OF PATENTS,

IN RELATION

To Arts and Manufactures for the year 1851.

MARCH 16, 1852.-Read.

AUGUST 30, 1852.-Ordered to be printed, and that 17,000 additional copies be printed, 2,000 of which for the Commissioner of Patents.

UNITED STATES PATENT OFFICE,

March 13, 1852.

SIR: I have the honor of transmitting to you, with the view of its being laid before Congress, that portion of the Report of this Office for the year 1851 which relates to Arts and Manufactures. Its presentation has been delayed for the completion of a Report on the World's Exposition, by Mr. Riddle, commissioner from the United States, which it was desirable to include.

The second or Agricultural section of the Report will shortly be submitted.

Very respectfully, your obedient servant,
THOMAS EWBANK.

Hon. Wм. R. KING,

Vice President of the United States,

and President of the Senate.