https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85749&pn=95 Making White Lead Patentee: Joseph Richards - Philadelphia PA Granted:1836-12-02

Abstract: The process which I have adopted is an improvement of that ordinarily followed in which the conversion of blue lead into carbonate is effected by the heat generated by the fermentation of manure cooperating with the vapor of vinegar, but instead of the heat produced by fermentation I introduce steam from a steam boiler, and the vapor of vinegar produced also by artificial heat. The structure in which the conversion is effected may vary in size but for the purpose of description I give the proportions of one which I have used, and which I have found to answer the intended purpose in a very perfect manner. I build a basement usually of brick, which is thirty three feet long, twelve feet wide, and four feet high. I form two furnaces for heating boilers on each end of this basement. The furnace, and boilers for water I place in the middle of each end the boilers being five feet long by two in diameter. The boiler for acid is considerably smaller, a common hundred gallon still answering the purpose well. Claim: The effecting of the corrosion of the lead, and the conversion thereof into white lead by the admission of steam from boiling water, and of the vapor of vinegar, or other fluid containing acetic acid into a corroding chamber, which corroding chamber is properly charged with lead, and is surrounded in the manner herein described by layers, and banks of sawdust, tan, or other like material into, and through which layers, and banks steam from water is forced so as to enter the corroding chamber.
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]]> https://www.datamp.org/patents/displayPatent.php?id=85747&pn=93 Rag Duster Patentees: Enoch Burt - Manchester, Hartford County CT , George Carriel - Manchester, Hartford County CT Granted:1836-11-28

Abstract: We take a common screen or duster, such as are in common use by paper makers, and having taken out of it the shaft, we cause it to revolve on gudgeons made fast to its heads by means of a flange, and bolts. We then place in the interior of the screen, and extending from end to end thereof, four agitators, these are small cylinders, about six inches in diameter in which are inserted pins in number, and length according to the degree to which the operator may choose to agitate the rags. Claim: The aforesaid arrangement, and combination of the common screen or duster with the cylindrical agitators armed with pins rapidly revolving in various directions with the sun, and planet motion, constituting an improved machine for cleaning rags of dust for paper making.
This is one of 85,039 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85746&pn=RE108 Machine for Heading Screws, &c. Patentee: Jeremiah H. Pierson - Ramapo, Rockland County NY Granted:1848-03-08
Assigned to Henry L. Pierson - Ramapo, Rockland County NY

Abstract: The nature of the said Jerimiah H. Pierson's invention consists in gripping that part of the wire which is to be formed into a screw blank or a rivet by means of jaws, and then sliding-these jaws along or by and in contact with the surface of a rest-plate (through a hole in which plate the wire is fed) to cut off the length required, the one edge of the gripping jaws and the hole in the plate constituting shears for cutting the wire, and by this motion carrying the end of the piece of wire cut oil sufficiently far to rest against the rest plate, which is a permanent part of the machine/preparatory to striking up the head. Claim: Cutting off the wire to be formed into a screw-blank or rivet by the sliding of the gripping-jaws after the wire has been gripped by them, when this is combined with the permanent rest-plate or head-block through which the wire is fed to the jaws, which acts as the permanent shear for cutting of the wire, and as the permanent rest or bed for the blank-or rivet when under the operation of the header.
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]]> https://www.datamp.org/patents/displayPatent.php?id=85745&pn=92 Making Wood Screws Patentee: Jeremiah H. Pierson - Ramapo, Rockland County NY Granted:1836-11-28

Abstract: I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings. Claim: The general combination and arrangement of the respective parts of the before described machine, in which the blanks to be nicked are held in a blank wheel, operated upon by friction rollers; and made to revolve through the intermedium of endless screws, and toothed wheels substantially in the manner described, while the nicking is effected by means of a revolving cutter. I do not intend to claim either of the individual parts in its separate character, but only as above described, the combined operation of these parts so as to produce the intended effects.
This is one of 85,039 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85743&pn=86 Making Bolt and Screw Heads Patentee: Jeremiah H. Pierson - Ramapo, Rockland County NY Granted:1836-11-26

Abstract: I have invented a new and useful machine for cutting wire into suitable lengths and for heading the wire or blank so cut for the purpose of manufacturing wood-screws and rivets. Claim: The mode of feeding in the wire, combining the action of the nippers, and their sliding plate, with the wedges for holding the wire, and their adjustments, also in conjunction therewith the manner of cutting off the wire, and raising, and depressing the cutting tongs, with a concurrent action of the heading die.
This is one of 85,039 patents currently in the database at datamp.org

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