46. For an Improved Plan for Locking Drays, Carts, &c., called the "Self-operating Lock;" Elijah Chapman, Akron, Ohio, September 26.

Claim." What I claim to be my invention is the combination of the bars, rods, and springs, and the levers, for the purpose of making pressure on opposite sides of the wheels, whenever the brake is operated."

47. For an Improvement in the Construction of Rotary Steam Engines; James Miller, Philadelphia, Pennsylvania, September 26. Claim." What I claim as my invention, and desire to secure by letters patent, is the combination with the revolving disk, in rotary steam engines, of a valve having the form herein described, or any modification thereof analogous in design and effect, by which the pressure of the steam upon the valve is directed wholly or mainly towards its centre or axis of motion, and upon its axle, and (for the purpose of avoiding friction) only so much on the sliding part as may be desirable or necessary to keep the valve closed on the sliding surface against the revolver.

"I also claim the combination and arrangement of three cams within two valves, constructed as herein set forth, and escapes for the steam at recesses behind the valves, as herein described.”

48. For an Improved Kiln Drying Apparatus; Sebre Howard, Adrian, Michigan, September 26.

Claim. Having thus fully described the construction and operation of my rotary cylindrical grain dryer, what I claim therein as new, and desire to secure by letters patent, is the uniting the cylindrical casings with each other, and combining them with the furnace in such a manner as to form a circular heating or drying chamber within the inner casing, an annular space or drying chamber connected with the same, between the outer casing and central casing, and an annular flue space between the central casing and inner casing, substantially as herein set forth.

"I also claim the giving the grain or other substance acted upon a constantly progressive rotary movement from the front to the rear end of the circular drying chamber, conducting it into the annular space or drying chamber, and returning the same by a reversed movement to its front end, discharging the kiln dried grain at the spout, by the action of the projecting spiral thread, connecting pipes and spiral thread, combined and operating substantially in the manner and for the purpose herein set forth."

49. For an Improved Machine for Carding Wool, Cotton, and other Fibrous Substances; Charles Bishop, Newtown, Connecticut, Sep

tember 26.

The patentee says,-"The object of my invention is to make the

action of the card teeth on the fibres continuous, and so to arrange them that a greater portion of the teeth shall be in active service than can be effected by the present method; and this I effect by placing the card teeth on a series of endless belts, which pass around rollers with the surfaces of the belts thus covered with teeth, running in contact along the straight surfaces between the rollers around which they pass, which prevents the card teeth from converging or diverging as when placed on curved surfaces."

Claim." What I claim as my invention, and desire to secure by letters patent, is the method herein described of carding fibrous substances by the action of the straight surface of a belt of cards, stretched and carried around rollers, when this is combined with one or more similar belts of cards, substantially as herein described.

"And I also claim, in combination with such belts of cards, the tables employed for keeping their acting surfaces in the proper line of action, substantially as described."

List of American Patents which issued in the month of May, 1842, with Exemplifications, by CHARLES M. KELLER, late Chief Examiner of Patents in the U. S. Patent Office.

(Continued from Vol. XIV, page 188.)

40. For an Improvement in Solar Lamps; B. H. Horn, Boston, Massachusetts, May 26.

Claim.—“ Having thus described my improvements, I shall only claim, as my invention, arranging or forming a trough on the exterior of the fountain, substantially in the manner and for the purpose specified.

"Also, the employment, or arrangement, of an auxiliary, or secondary, lamp, (for the purpose of melting, or liquifying, the concrete substance in the main lamp,) just beneath the fountain of said main lamp, and so that the flame of the former may extend up into the interior tube of the burner of the latter, the construction and operation of the same being substantially as set forth.

"I also claim extinguishing the flame of the auxiliary lamp, and preventing the evaporation of the liquid in the fountain of the same, by means of a sliding lever valve, arranged and operating substantially as described."

41. For an Improved Hot Air and Cooking Furnace; Otis Packard, Roxbury, Massachusetts, May 26.

The claim is omitted, as it could not be understood without the drawings.

42. For an Improved Machine for Sawing Boats' Oars from Plank, or Timber; John Benson and Ezekiel Page, Boston, Massachusetts, and Richard T. Tough, West Leyden, New York, May 26. The patentees say," Heretofore it has been customary to divide

a plank from which oars are to be made into pieces of a width equal to that of the blade of the oar, which blade is generally in width double that of the widest part of the rest of the oar. Our method is to separate the plank into strips, in such manner that we obtain nearly double the number of oars from it than by any of the modes heretofore practised."

Claim." Having thus fully described our improvements, we shall claim the above described method of dividing a plank into parts, or pieces, from which oars may be manufactured; also, the manner of effecting the lateral movement of the carriage of the sawing machinery, by supporting said carriage on the inclined and declined rails, the whole being substantially as set forth."

43. For Improvements in Lamps; Archibald H. Baird, New York, May 26.

The patentee says,-"The nature of my invention and improvement is in certain new and useful combinations of metallic yokeshaped conductors with the ordinary burners, for conducting the heat to the parts of the lamp in contact with the lard, or the vessels in which they are placed."

Claim." What I claim as my invention, and which I desire to secure by letters patent, is making the button a heater, by means of the copper yoke in combination with the inner tube and perforated outer tube in Argand lamps, for burning lard, as described."

44. For an Improved Mode of Constructing Bee Hives; Elijah Grumman, Norwalk, Connecticut, May 26.

Claim. "What I claim as my invention, and not previously known in the above described hive, is the combination of several boxes of the form above specified, supported as above described, with the ash-box, or trap, above described, for the purposes which are referred to in the specification."

45. For an Improved Mode of Making Gloves, Hose, Coats, and other articles of Wearing Apparel, of which Wool, Hair, or Fur is the principal or only Material; Marmaduke Osborne, May

28.

Claim. "What I claim as my invention, and desire to secure by letters patent, is the making of gloves, coats, hose, or other articles of wearing apparel, of which wool, hair, or fur is the only material, by uniting, by any process of felting, the bats of which any such article is composed, in a flat, or projecting seam, and by cutting away the superfluous parts after such seam is formed by felting, as above described, and without the folding, or turning over, of the edges, or mar'gins, of the bats, which is used in the ordinary process of making bats."

46. For an Improvement in the Corn Cultivator; Asa Wood, David Wells & Issachar Bates, of Adams, New York, May 28.

The patentees say,-"The hind teeth are made of cast iron, in the form of an iron plough, with land-side, mould-board, and false point, to be used that they may turn the furrow inwards, (that is, towards each other,) or outwards, (that is, from each other,) by changing the teeth from side to side. The fore tooth is to be also made of cast iron, and differs from the hind tooth in these particulars-that, as the hind teeth each have a land-side, and mould-board, and false point, the fore tooth is made with a double mould-board and false point, that cuts and turns the furrow each way."

The claim is to the combination, in one frame, of these teeth, such as are above described.

47. For Improvements in Machinery for Ruling Letter Puper; Geo. L. Wright, Springfield, Massachusetts, May 28.

Claim. Having thus described my invention, I shall claim the two cylinders, A, and B,-arranged so that the lowest edge or part of the upper shall be situated at a distance from the upper edge of the lower cylinder equal to, or a little greater than, the length of the sheets to be ruled, said length being taken in the direction in which the sheets move, and said edges of said cylinders being in, or about in, a horizontal plane, and so that the cylinder B shall have a velocity double that of A-in combination with the system of rollers and cords, whereby the sheets are received from an endless feeding apron, upon which they are placed so as to lap over each other, and from thence, are caused to pass around the first cylinder, and be ruled thereon, upon one half of one of their sides, and from thence to pass around the second cylinder, and be ruled over the whole of their opposite sides, as before set forth; the whole being arranged and operating substantially in the manner described."

45. For an Improved Grain Cleaner; Daniel Flickinger and Sebastian Krim, Hanover, Pennsylvania, May 28.

Claim." What we claim as our invention, and which we desire to secure by letters patent, is separating garlic from wheat, by passing the grain and garlic between rollers covered with India rubber, or other elastic substance, that will mash the garlic and, at the same time, not injure the wheat, but increase the size of the garlic, and prevent it from passing through the meshes of the inclined screen through which the grain passes, in the manner described, or in any other mode substantially the same; and in combination therewith, the arrangement of the several inclined screens, conducting-boards, spouts, and tubes, as set forth.”

49. For Improvements in Cultivators; John Mason, Haddonfield, New Jersey, May 28.

This patent is granted for the addition of bands, as they are termed, hinged to the beam, between the handles, for lifting vines.

50. For an Improvement in Brushes, for Dressing Warps; Samuel Taylor, Lowell, Massachusetts, May 28.

The patentee says, "My invention consists in arranging the bristles between strips of wood, or in parallel grooves formed in the block, or by laying the said strips side by side, and interposing between their extremities, at each end of the brush, small pieces, whose sides are covered with glue, to cause their surfaces in contact with the strips to adhere thereto. The upper parts of each side of the strips, in opposition, are chamfered, or beveled off, so as to form an inverted trapezoidal groove, in which, and among the tops of the bristles, pitch, or cement is poured, by which the bristles are further secured in their respective positions. Each line, or layer, of bristles, when placed between the strips, should be saturated with a mixture of white lead, or other suitable paint, and linseed, or other proper oil, which causes the bristles to cohere, and prevents their displacement by the action of water, or the sizing material used in dressing the warp."

Claim." Having thus fully described my invention, I shall claim securing the bristles in position and preventing their displacement by the action of water, or other external cause, by saturating said bristles, when inserted in the block, with paint, or a mixture of white lead, or other suitable substance, and linseed, or other proper oil, in combination with the mode, above set forth, of confining their upper ends by cementing them in an inverted trapezoidal groove, the whole process being substantially as above described, so that when a brush for dressing warps has its bristles arranged and confined, as set forth, in long grooves, or in any manner similar thereto, said brush will apply paste, or sizing matter, more perfectly upon the threads of the warp, and be more durable than brushes as generally constructed, as heretofore explained."

51. For an Improved Slave-dressing Machine; Samuel Leamed, Ridgeway, New York, May 30; antedated November 30, 1841. Claim." I am aware that machines have been made for dressing staves by forcing them through between knives, by a follower, operated by a rack and pinion, and I do not, therefore, claim this as of my invention; but what I do claim as my invention, and desire to secure by letters patent, is the arrangement for throwing the rack out of gear, by having the receiving box, in which the slide works, hung at one end by a joint, or roll, and the other provided with a stirrup, or staple, in combination with the spring catch on the frame, and the cam-piece, or guard, on the slide in the manner described; and, in combination with the above, I also claim the foot and cross levers, for the purpose of throwing the rack into gear, as described."

52. For Improvements on his Loom for Weaving Counterpanes, and other Articles; Erastus B. Bigelow, Lancaster, Massachusetts, May 30; antedated May 1, 1842.

Claim. "What I claim therefore, as constituting my inventions,