and the passing of a shuttle furnished with its bobbin, in the manner set forth, between the needle and the thread which it carries, under a combination and arrangement of parts substantially the same with that described.

"I also claim the lifting of the thread that passes through the needle eye by means of the lifting rod, for the purpose of forming a loop of loose thread that is to be subsequently drawn in by the passage of the shuttle, as herein fully described; said lifting rod being furnished with a lifting pin, and governed in its motions by the guide pieces and other devices, arranged and operating substantially as described.

"I claim the holding of the thread that is given out by the shuttle so as to prevent its unwinding from the shuttle bobbin after the shuttle has passed through the loop, said thread being held by means of the lever or clipping piece, as herein made known, or in any other manner that is substantially the same in its operation and result.

"I claim the manner of arranging and combining the small lever with the sliding box, in combination with the spring piece, for the purpose of tightening the stitch as the needle is retracted, as described.

"I claim the holding of the cloth to be sewn by the use of a basterplate, furnished with points for that purpose, and with holes, enabling it to operate as a rack in the manner set forth, thereby carrying the cloth forward, and dispensing altogether with the necessity of basting the parts together."

22. For a Machine for Excavating and Embanking Ditches; Samuel Thrailkill, LaFayette, Indiana, September 10.

The patentee says,-" My first improvement consists in connecting the mould board, or winding trough which carries up the earth and delivers it on the side of the ditch to form the embankment, with the share, by means of a hinged joint, so that this part of the machine can be elevated or depressed to adapt it to the forming of any depth of ditch. My second improvement consists in adapting to the forward part of the board which carries the forward end of the side cutters that form the side of the ditch, two rollers or wheels, the axles of which are hung in vibrating frames, each connected by a stirrup with a screw that is tapped, through an arber that turns in standards, so that by the turning of the screws the rollers can be elevated or depressed at pleasure, to increase or decrease the depth of the ditch. And my third improvement consists in making the cutting edges of the two inclined side cutters with offsets or teeth to increase their capacity for cutting."

Claim. "I claim, in combination with the adjustable mould board, adjusting the depth of the forward part of the machine, substantially as described."

23. For an Improved Spark Arrester; Augustus Hamann, Washington, District of Columbia, September 10.

Claim. Having thus fully described my improved apparatus, what I claim therein as new, and desire to secure by letters patent, is the combination of the pipes c and E, the box i, and pipe n, constructed substantially in the manner and for the purpose herein fully set forth, so as to cause a sufficient draught, and at the same time to arrest the sparks."

24. For an Improved manner of Manufacturing Artificial Burr Stones; Ezekiel Cutter and Stephen Blanchard, Cincinnati, Ohio, September 10.

Claim.—“ Having thus fully set forth the nature of our new manufacture of artificial burr millstones, and shown the manner in which we effect the same, what we claim therein as new, and desire to secure by letters patent, is the preparing of such artificial,burr stones, by incorporating with clay, or such earth as is fitted for making the harder kinds of pottery, a large portion of fragmentary vegetables, or such other suitable matter as will cause the said clays, when burnt, to be filled with pores of the kind by which it is adapted to take the place of the natural burr stone; the whole procedure and operation being substantially the same with that herein fully made known."

25. For an Improved mode of Curing Meat in Vacuum; Augustus C. Allen, Houston, Texas, September 10.

Claim. "What I claim as my invention, and desire to secure by letters patent, is the mode by which I obtain a vacuum in meat vat A, for curing meat, by exhausting the brine from meat vat A, into brine vat B, and by means of the combination of stop-cock Panu pipe K, connecting vat A with vat B, and stop-cock L, in pipe N, I, substantially as above described."

26. For an Improved mode of forming a Grinding Surface in Mills; Jesse Fitzgerald, New York, September 12.

Claim. "Now what I claim as my invention, and wish to secure by letters patent. is the use of French burr stones, or of a similar material, not in blocks, but in small pieces, heretofore considered useless, and setting these pieces in an external frame, of the shape of a cone or cylinder, so as to form a grinding surface that will cost far less than a similar surface formed in any other way hitherto employed."

27. For an Improvement in Printing Presses; William W. Marston, New York, September 12.

Claim. "I do not claim the invention of printing by machiner

those necessary parts common to printing machines, taken in connexion with the parts substituted by me for others necessary to make one machine; but what I do claim as my invention, and desire to secure by letters patent, is the use of a vibrating cylinder or cylindrical segment having two sets of grippers, constructed as described; also, the application of revolving cylindric brushes in the manner described; and, finally, the use of adjustable weights in connexion with the vibrating cylinder or segment; the whole being constructed, combined, and operating substantially in the manner set forth."

28. For an Improved Balance for Weighing; Joshua Gibbs, Newark, Ohio, September 12.

The patentee says, "The nature of my improvement consists in the manner in which I have attached the scale beam to the platform balance, so that it can be turned in any horizontal position to weigh with."

Claim. "What I claim as my invention, and desire to secure by letters patent, is combining the scale beam with the platform balance, in the manner described, so as to be turned into any horizontal position, the whole being constructed as herein set forth."

29. For a Machine for Scouring and Dusting Mill Feed after Bolling; Edward Bradfield, Rochester, New York, September 15.

Claim. "What I claim as my invention, and desire to secure by letters patent, is constructing the inside cylinder with a combination of cards and hair brushes; also, in combination with the above, the flat screen, the double separator, the spring beater, and the manner in which the outside cylinder revolves on the cylindrical journals, without coming in contact with the shaft; all as herein set forth, for the purpose herein described."

30. For an Improvement in the Manner of Constructing a Coffer Dam; Sam'l S. Walley, Charlestown, Pennsylvania, September 12. Claim." Having thus fully described the manner in which I construct and employ my portable coffer dam, what I claim therein as new, and desire to secure by letters patent, is the manner in which I have arranged and combined the respective parts thereof, so as to adapt it to the purpose intended as herein made known; that is to say, I claim in combination the providing of the inner box or coffer with doors at its lower part, which, when closed, will convert it into a buoyant vessel, said coffer being provided with elastic padding on its lower edge, and troughs or boxes capable of receiving such load of stone, or other materials as will sink, and press the coffer down upon the bottom of the stream or other water, as herein fully made known, and the expedient of letting in the water to fill the said boxes to increase the pressure, and the pumping out of said water to render it more buoyant."

31. For an Improved Self-cleaning Blacksmith's Forge or Furnace; James R. Hobbs, Huntsville, Alabama, September 15.

The patentee says,—" The nature of my invention consists in constructing a blacksmith's furnace in such a manner that the fire chamber will keep itself perfectly clear of ashes and cinders, and in so arranging the grating and furnace that the atmosphere shall circulate through and around them in such a manner as to regulate their temperature, and prevent their being injured or destroyed by intense beat."

Claim.—“ What I claim as my invention, and desire to secure by letters patent, is the introduction of a blacksmith's furnace in such a manner as to allow the cinders and ashes to freely escape, and prevent their clogging the fire chambers, by placing grate bars at its base, opening into an open air chamber, (leading out at the side of the forge,) and the admitting the blast through the sides of the fire chamber above the top of the grate bars, substantially as herein set forth."

32. For an Improvement in Steelyards; Thaddeus Fairbanks, St. Johnsbury, Vermont, September 15.

Claim. My improvement, and therefore that which I claim, consists in the auxiliary scale and weight, as combined and operating with the main weight, substantially in the manner and for the purpose as above specified."

33. For an Improved Corn Plough and Cultivator; Isaac Edwards, Orange county, Indiana, September 19.

Claim. "What I claim as my invention, and desire to secure by letters patent, is the manner of combining the hooks, and eyes, and clevis, as described, by which the sides of the plough may be elevated and raised out of the ground, so as to conform to the inequalities and irregularities in the corn rows, without disturbing the other parts of the machine, and without the necessity of raising the entire plough."

34. For an Improvement in the Bee Hive; William Whitcomb, Grafton, Vermont, September 19.

The patentee says," The peculiar nature of my improvement consists in the manner in which I have arranged the cases of the drawers of the hive in the same; the said arrangement, very simple as it may appear, enabling me to obtain very great advantages in the management and operations of the bees."

Claim. I do not claim the employment (in a hive) of drawers and boxes, and cases to receive them, as I am well aware that such are old and common devices; but that which I do claim, is my improved manner of arranging each box, and its case in the main chamber of the hive, as described; that is to say, the so disposing them therein, that two diagonal flues, passing through their corners, shall be re

spectively parallel to the bottom and sides of the hive, substantially as specified."

35. For an Improved Projectile, for Killing Whales or other Fish; Oliver Allen, Norwich, Connecticut, September 19.

Claim. Having thus described my invention, I shall claim the lance head, the cylindrical barrel, or bomb, and the priming tube, in combination with one another, and arranged and operating together substantially as set forth."

36. For an Improved Reciprocating Steam Engine; Daniel Barnum, New York, September 19.

The inventor says he has "invented and made certain new and useful improvements in the mechanical arrangement, construction, application, and combination of the parts of steam engines that are intended to work by the action of steam, admitted into one cylinder at a given pressure, and in the progress of the stroke, or half-revolution, the communication with the boiler is cut off, and the steam is allowed to pass into a second cylinder and work expansively, which has been done before by others, but not in the manner invented by me, the first difference between my hereinafter described invention, and nearly all that have preceded it, being that I use two parallel and equal-sized cylinders, set along side of each other. The second difference is, that with these two cylinders, I use only one induction steam pipe from the boiler, and one eduction pipe from the cylinders to the atmosphere, or a condenser. The third difference is, that the steam is admitted by a proper induction valve, to about the half length of the first cylinder; the induction valve is then closed, and an expansion valve simultaneously opened from the first to the second cylinder. Thus the operation of the steam, commencing at the same end of both cylinders, forms the fourth difference between my plans and those of others, and the expansion valve is sustained open, so that the steam. shall act expansively during the remainder travel of the first piston, and shall also propel the pistons both in the same direction, during a large portion of the travel, or stroke, of each, without reacting from one piston upon the other, which constitutes a fifth difference between this invention and others which have preceded it. The exhaust valves operate to exhaust both cylinders to the air, or to a condenser, at the same time, from the same end of each cylinder to the same said pipe, and this constitutes a sixth difference between this and other plans preceding it; a large portion of these ends being attained by placing the piston rods in connexion with two cranks on one main or driving shaft; which two cranks are to be placed either at right angles, or at some acute or lessening angle, less than ninety degrees apart, which is believed to be the seventh clear and distinct difference between these arrangements and any that have preceded them. It is well known that double engines have been made to act with either equal or unequal cylinders, upon cranks set at opposite points in the same