FORMS UNDER THE PATENT LAWS. 1. CAVEAT. 2. APPLICATION FOR PATENT, BY INVENTOR.. 3. APPLICATION FOR PATENT, BY EXECUTOR OR ADMINISTRATOR. 4. APPLICATION FOR PATENT FOR A DESIGN. 5. APPLICATION FOR REISSUE, BY PATENTEE. 6. APPLICATION FOR REISSUE, BY ASSIGNEE OR EXECUTOR. 7. APPLICATION FOR EXTENSION, BY PATENTEE. 8. DISCLAIMER. 9. APPEAL TO EXAMINERS IN CHIEF. 10. APPEAL TO COMMISSIONER OF PATENTS. 11. APPEAL TO JUSTICES SUPREME COURT DISTRICT COLUMBIA. 12. DEPOSITIONS. 13. ASSIGNMENT OF INVENTION BEFORE PATENT: PATENT TO ISSUE TO ASSIGNEE. 14. ASSIGNMENT OF INVENTION BEFORE PATENT: PATENT TO ISSUE TO INVENTOR AND ANOTHER. 15. ASSIGNMENT OF ENTIRE OR PARTIAL INTEREST IN A PATENT. 16. ASSIGNMENT OF UNDIVIDED INTEREST IN PATENT. 17. EXCLUSIVE LICENSE TO MAKE AND USE AN INVENTION. 18. LICENSE TO USE AN INVENTION ON PAYMENT OF ROYALTY. 1. CAVEAT. Petition. TO THE COMMISSIONER OF PATENTS: The petition of John Fitch, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, RESPECTFULLY REPRESENTS: That he has invented a new and improved mode of preventing steam boilers from bursting, and that he is now engaged in making experiments for the purpose of perfecting the same, pre CAVEAT. ? paratory to his applying for letters patent therefor. He therefore prays that the subjoined description of his invention may be filed as a caveat in the confidential archives of the Patent Office, agreeably to the provisions of the act of Congress in that case made and provided; he having paid ten dollars into the treasury of the United States, and otherwise complied with the requirements of the said act. PHILADELPHIA, March 1, 1856. Description of Invention. TO ALL WHOM IT MAY CONCERN: JOHN FITCH. Be it known that I, John Fitch, of Philadelphia, in the county of Philadelphia, and State of Pennsylvania, have invented a new and improved mode of preventing steam boilers from bursting, and that the following is a general description thereof. My invention consists in making in the upper part of a steam boiler an aperture similar to that made for the safety-valve; and in filling or closing such aperture with a plug or disk of some alloy, which will fuse at any given degree of heat, and permit the steam to escape, should the safety-valve fail to perform its functions. The steam boiler is constructed in any of the known forms, and may have applied to it gauge-cocks, a safety-valve, and other usual appendages. To obviate any danger that may arise from the adhesion of the safety-valve or from any other cause, I make in the top of the boiler an opening similar to that made for the safety-valve, and I fill such opening with a plug or disk of fusible alloy, secured in any sufficient manner. Such fusible plug may be made so as to melt at a given temperature, which will be that to which it is desired to limit the pressure of the steam. When the temperature of the steam in the boiler rises to such limit, the alloy will melt and allow the steam to escape, thus preventing all danger of explosion. Witnesses ROBERT FULTON, OLIVER EVANS. JOHN FITCH., The description in a caveat need not be as particular as is requisite in a specification; but should be sufficiently precise to enable the Patent Office to judge as to any probable interference when a subsequent application is filed. APPLICATION FOR PATENT, BY INVENTOR. Oath. CITY AND COUNTY OF PHILADELPHIA, } 88. On this first day of March, 1856, before me, the subscriber, a justice of the peace, personally appeared the within-named John Fitch, and made solemn oath [or affirmation] that he verily believes himself to be the original and first inventor of the mode herein described for preventing steam boilers from bursting, and that he does not know or believe the same was ever before known or used; and that he is a citizen of the United States [or in the case of an alien, and that he is a native of (naming the country), that he has resided in the United States for the year last past, and has made oath of his intention to become a citizen thereof]. 5 CENT INT. REV. BENJAMIN FRANKLIN, Justice of the Peace. 2. APPLICATION FOR PATENT, BY INVENTOR. Petition. TO THE COMMISSIONER OF PATENTS: The petition of John Fitch, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, RESPECTFULLY REPRESENTS: That your petitioner has invented a new and improved mode of preventing steam boilers from bursting, which he verily believes has not been known or used prior to the invention thereof by your petitioner. He therefore prays that letters patent of the United States may be granted to him therefor, vesting in him and his legal representatives the exclusive right to the same, upon the terms and conditions expressed in the act of Congress in that case made and provided; he having paid fifteen dollars into the treasury, and complied with the other provisions of the said act. JOHN FITCH. PHILADELPHIA, January 1, 1857. APPLICATION FOR PATENT, BY INVENTOR. Specification. TO ALL WHOM IT MAY CONCERN: Be it known that I, John Fitch, of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented a new and improved mode of preventing steam boilers from bursting [or, a new and useful machine for (stating the use and title of the machine); or, a new and useful improvement on a, or on the, machine, &c.]; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification. The nature of my invention consists in providing the upper part of a steam boiler with an aperture in addition to that for the safety-valve; which aperture is to be closed by a plug or disk of alloy, which will fuse at any given degree of heat, and permit the steam to escape, should the safety-valve fail to perform its functions. To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation. I construct my steam boiler in any of the known forms, and apply thereto gauge-cocks, a safety-valve, and the other appendages of such boilers; but in order to obviate the danger arising from the adhesion of the safety-valve, and from other causes, I make a second opening in the top of the boiler, similar to that made for the safety-valve, as shown at A, in the accompanying drawing; and in this opening I insert a plug or disk of fusible alloy, securing it in its place by a metal ring and screws, or otherwise. This fusible metal I, in general, compose of a mixture of lead, tin, and bismuth, in such proportions as will insure its melting at a given temperature, which must be that to which it is intended to limit the steam; and will, of course, vary with the pressure the boiler is intended to sustain. I surround the opening containing the fusible alloy by a tube B, intended to conduct off any steam which may be discharged therefrom. When the temperature of the steam in such a boiler rises to its assigned limit, the fusible alloy will melt, and allow the steam to escape freely, thereby securing it from all danger of explosion. What I claim as my invention, and desire to secure by letters patent, is the application to steam-boilers of a fusible alloy which will melt at a-given temperature, and allow the steam to escape, as herein described, using for that purpose the aforesaid APPLICATION FOR PATENT, BY INVENTOR. metallic compound, or any other substantially the same, and which will produce the intended effect. Witnesses ROBERT FULTON, OLIVER EVANS. JOHN FITCH. Oath. } 88. CITY AND COUNTY OF PHILADELPHIA, On this first day of January, 1857, before me, the subscriber, a justice of the peace, personally appeared the within-named John Fitch, and made solemn oath [or affirmation] that he verily believes himself to be the original and first inventor of the mode herein described for preventing steam boilers from bursting, and that he does not know or believe the same was ever before known or used; and that he is a citizen of the United States [or citizen or subject of other country, as the case may be]. BENJAMIN FRANKLIN, Justice of the Peace. 5 CENT INT. REV. STAMP. If the application is made through a solicitor or other person, there will be required a Power of Attorney, which may be as follows Power of Attorney. KNOW ALL MEN BY THESE PRESENTS, That I, John Fitch, hereby constitute and appoint Robert Morris, of the city of Philadelphia, or his accredited agent, my Attorney, to prosecute, before the Patent Office of the United States, the accompanying application; to alter or modify the Specification and Claim therein as may be necessary, and as he may deem expedient; to receive any Letters Patent which may be granted therefor; and to do all things proper and necessary in the premises, with full power of substitution and revocation. Witness my hand, this first day of January, A. D. 1857. 50 CENT INT. REV. ВТАМР. JOHN FITCH. |