apparatus itself, we apprehend, will be more costly than a small brick furnace built for the purpose, without being more convenient.

21. For the application of Water Lime Cement to the Construction of Roads; Joseph Roby, Jr., Albany, New York, August 27.

The whole system contained in this specification is that so well known of forming roads by the employment of hydraulic lime with beds of gravel, or broken stones of a suitable quality; the directions given do not contain any thing with which engineers are not familiar, and the patentee tells us, in conclusion, that "he would add to his specification and claim, the right to construct roads, streets, &c., by the use of water lime or cement, in any other manner than above described," a right which will be very readily conceeded to him, provided it be not an exclusive one; to this both the ancients and the moderus may well demur. Our shelves would furnish a volume of evidence of the antiquity of such roads; we have opened the "Dictionnaire Technologique" only at the article "Cement," and give the following note: "I have very recently had occasion to examine a piece of natural hydraulic lime, from which a hydraulic mortar of great excellence is prepared, and which is principally employed in the construction of cement pavements of very great solidity."

22. For a Churn; Caleb Angerine, City of New York, August 17. Mr. Angerine obtained a patent for a churn some time ago, and although he has a new patent he has not a new churn, as this last is a fac simile of such as were previously on the shelves of the patent office. Two churns of the ordinary kind are placed upon a platform, the two dashers are attached to a vibrating beam, to which motion is communicated by a crank, aided by a fly wheel. The patentee claims "the application of the walking beam, fly wheel, pendulous lever, operating crank and pitman, in giving motion to one or more churns at once.

23. For a Harpoon; Dexter N. Chamberlain, Boston, Massachusetts, August 17.

The patentee says, "What I claim as my invention is the introduction of prussic or hydrocyanic acid into a harpoon, for the purpose of destroying whales or other fish, or animals usually taken by that instrument, and furthermore I claim the construction of a harpoon as I have herein above described."

We do not dispute the fact of the patentee being the inventor of the use of prussic acid for the purpose designated, but if he was, he has been unfortunately dilatory in applying for a patent, as two or three years have elapsed since we were in correspondence with other individuals upon the same subject, and the taking of a patent was then declined because it was found that the idea was not new. The public papers have noticed it, long since, and it can scarcely, therefore, be called new, at the present day.

24. For a Wire Door Spring; John Codman, Boston, Massachusetts, August 17.

The spring is called the vertical tortine, wire door spring," and a patent was obtained for it on the 10th of December, 1832. The regulating box and wheel described in the former patent have been improved, and this forms the subject of the present application; a semicircular groove is to be made in the

box and wheel, the object of which we cannot take time and space to describe.

25. For the Application of the Waste Heat from Forges, Furnaces, &c.; Tunis Leroy, Newport, Herkimer county, New York, August 17.

A steam boiler is to be so placed as to receive a due portion of the waste heat of forges, furnaces, &c., by which means a power is to be obtained which is applicable to various useful purposes. The doing this is the thing claimed. Owing to the great increase in the number of patents, we do not so frequently as formerly, turn to day and date to show when, and how often, patentees have been anticipated in their inventions. Our own patent office, and the establishments in foreign countries, might both be appealed to in proof that the foregoing possesses no claim whatever to novelty.

26. For an improvement in Power, and other, Looms; Amasa Stone, of Rhode Island, but now residing in England, August 17.

In the specification of this patent particular reference is made to one for merly obtained by Mr. Stone, and dated the 13th of April, 1829, and upon which the present plan is to be considered as an improvement. After explaining the construction of his apparatus, by reference to drawings, the patentee says that, "having now described my improvement in power looms, and other looms for weaving silk, linen, cotton, woollen, and other cloths, called a taking up motion, together with the arrangement of parts by which the same may be carried into effect, I do hereby declare that I consider my claim of improvement or invention to consist in and extend to the connection of the reel with the cloth beam (in those looms where my former improvement already referred to is applied) and in the communication of motion from one to the other, and in the regulation of the motion of the cloth beam by the motion of the reed, by whatever combination of machinery, apparatus, or gearing, the same may be effected."

The object in view, and the general means of attaining it, appear to be similar to those of Mr. Burr, in the patent numbered 31, for the last month, (July.)

27. For Gates for Canal Locks; David Wilkinson, Cohoes, Albany county, New York, August 17.

There is a good general drawing of the apparatus patented, but the description and claim lend little or no aid in making known the views of the patentee. The latter is as follows:

"The invention claimed consists in the before described mode of adjusting the friction roller, for the quadrant, or circular rail ways; the rider to guide the chain on the capstan; the open head with palls of the capstan, and the self-adjusting valve gate.'

28. For Winding Silk from the Cocoons, without Reeling; Gamaliel Gay, Poughkeepsie, Dutchess county, New York, August 17.

The particular construction of this machine is shown in a drawing which accompanies, and is referred to in, the specification. The claim is to "the winding of silk from the cocoons directly on to the spools, without the intermediate process of reeling; and also to that arrangement of the winding machinery by which the same is, or may be, effected, acting substantially as set forth."

29. For a Mowing Machine; John P. Chandler, Wilton, Kennebec county, Maine, August 17.

The frame work of this machine runs upon four wheels, three of which turn freely on their axles in the usual way, but one of the hind wheels is employed to give motion to the mowing apparatus, by means of a wheel and band. The scythes, four in number, are attached to the periphery of a wheel which revolves horizontally below the body of the carriage. In this specification there is nothing in the form of a claim; the general principle is not new, nor does the arrangement of the parts of the machine offer any thing to bespeak a more favourable opinion of its operation than of that of several others of the kind which have had a brief existence, and then passed into oblivion.

30. For a Spiral Band Wheel; Samuel S. Walley, Charlestown township, Chester county, Pennsylvania, August 17.

The title of this patent led us to suppose that a band twisted spirally was to be employed upon a wheel; but as in books, so in patents, the title and the contents have sometimes but little connexion with each other. The patentee has conceived a notion that he can obtain a great increase of power by passing a band over polygonal or angular wheels; and we have a notion that if he ever attempts to use a band in the manner described by him, his example will not have a single follower. A description of the affair is out of the question; we must omit that and pass to the claim, which is to "the above described combination and structure of machinery applied so as to produce an increased power or effect from the increased adhesion of the band by its coiling one or more times upon an angular conical cylinder, or wheel, adapted for the purpose as aforesaid; and, by the employment of a square hole with rollers, as a means of transmitting the band, and communicating circular motion from a perpendicular to a horizontal wheel, and vice versa, without the intervention of intermediate wheels as aforesaid."

If the reader does not understand the whole from the foregoing, it would be of little use to present the entire specification and drawing, as these would involve him in inextricable darkness.

31. For a Machine for Breaking Anthracite Coal; Jonathan S. Hubbell, city of New York, August 17.

This is a machine to effect that which we are very apprehensive must continue to be done by hand. The coal is put into a kind of trough, the bottom of which is formed of iron bars, or grating; and hammers, or beaters, are made to rise by a revolving shaft, and to strike upon it. It is proposed to place an inclined screen below the trough to divide the coal, and we believe that this will be a very useful appendage, as we have no doubt that a large portion of it will be well pulverized, and that the remainder will be very unequally broken.

32. For Grinding and Chopping Grain; Pierson Cope, Washington township, Fayette county, Pennsylvania, August 17.

This is merely a mill with a conical nut and box, the axis of which is placed horizontally, the feeding being effected through an opening in the shell at the small end. The claim is to the plan of the castings; the plan of the furrows that they may grind fast with little power, and discharge freely through the opposite end, and the plan of tempering screws with the iron

slides, and putting it together for convenience;" each of which plans has about an equal claim to novelty.

33. For a Pocket Pistol; Victor M. Wallace, West Topham, Orange county, Virginia, August 17.

The object of this invention is "to give the greatest length possible to the barrel of the pistol, for the purpose of discharging the ball with increased velocity and greater precision in its direction, as well as to a greater distance." To effect this object the back end of the barrel is cylindrical, and is passed into the stock, reaching to its end, the part grasped by the hand descending nearly at right angles from the upper portion. The percussion cap passes on to a nipple at the centre behind the barrel, the trigger operating upon it through the intermedium of a main spring and other appendages, contained within the handle of the stock.

The claim "is not to the discharge from the centre of the breech-pin, but simply to the manner of construction described, namely, the rounded back part of the barrel, with the manner in which I insert the breech pin, for the purpose of drawing the shoulders of both towards each other; also the disposition of the lock, as contained in the lower part of the grasp of the stock, also the interior of the trigger, and its adjustment as described."

There is some sacrifice made by rounding the back part of the barrel, as the breech is thereby rendered smaller than the outer, or muzzle, end; perhaps, however, means may be found to remedy this defect.

34. For a Cooking Stove; Ezekial Gore, Jr., Guilford, Windham county, Vermont, August 17.

Here is a rectangular box which is divided into three compartments; the two end ones are ovens with doors, the middle contains the furnace, the upper end of which extends through the top of the box, where it is fed with fuel, and through which passes a tube leading into two boilers which stand on either end of the box, above the ovens. We do not think it worth while to give the claims as the thing is old in nearly every part; it is not long since a patent was granted for a stove nearly identical with this even in its mi

nutia.

35. For the Application of the rising and falling of the tide to the propelling of Machinery; Henry B. Fernald, Portsmouth, Cumberland county, Maine, August 17.

"A buoy of sufficient strength and dimensions, connected by a rope or chain passing from the buoy under a pully at the bottom of the water, with a wheel which moves the machinery. In the falling of the tide, or water, the weight of the buoy, filled with water by means of a stop cock, or otherwise, operates as a propelling power, being so connected by another rope or chain to another wheel, as to operate alternately with the wheel above-mentioned."

"What I specifically claim as my invention or discovery is the principle of applying the rising and falling of the tide, and other water, to the propelling machinery."

At p. 154, vol. 5, there is the specification of a patent granted on the 23d of December,1829, to Henry M. Webster for a "tide power," in which it is said that "the object which the subscriber proposes to effect is to bring inte value and use the rise and fall of the tide on the seaboard, and particularl

in the principal cities of the Union, to be employed in manufacturing and other purposes."

The two plans, it will be seen, are identical; in the first patent it is proposed to use "vessels or floats of great weight and buoyancy," "a condemned or other hulk of a ship of required size," being mentioned as suitable for the purpose. Some remarks of the editor will be found appended to the specification alluded to.

36. For a Lady's Saddle Tree; John M. Bouton, Newark, New Jersey, August 17.

All the information given in the specification is that there is to be "a safety guard or rail extending from the head of the cantle, made from steel, iron, wood, or any other material, and secured at the two ends to the saddle tree by loops, sockets, rivets, nails or screws. The safety guard runs from the head to the cantle in a circular form, and is especially useful in securing the seat of the rider, and making them sit firmer and more safe."

Although this specification appears to be the work of a gentleman of the law, its requirements have been either misunderstood or overlooked, as the foregoing, most certainly does not distinguish the invention from all other things before known or used, nor set it forth in those full clear and exact terms which will enable a competent workman to make the thing intended to be described.

37. For a mode of Fitting the boxes for gudgeons into the plummer blocks; and also the bearing of the slides for Locomotive and other Steam Engines, and for other purposes; Matthias W. Baldwin, city of Philadelphia, August 17. (See Specification.)

38. For Preparing of the Oil of Harze; Christopher Preswick, and John M. Fisher, city of New York.

"The object of our invention is to prepare an essential oil from the condensible matter, or overflow, which is obtained in the manufacture of carburetted hydrogen gas, from resin-wood, or bituminous coal, or a mixture of them, and the said oil may be applied to the following purposes; that is to say, in the preparation of paints, varnishes and laquers, also as a solvent caoutchouc (or gum elastic); also for furnishing light in lamps." The condensible matter is to be mixed with animal or vegetable charcoal, and then submitted to distillation, the volatile oil being condensed. The claim made is to the effecting this object, in the manner proposed.

The tar, or condensible matter collected in making carburetted hydrogen from pit-coal is regularly submitted to distillation in England, and the essential oil, a species of naphtha, obtained from it is employed in dissolving caoutchouc, and for other purposes; yet this, according to the terms of the foregoing patent, appears to be one of the objects which the patentees claim as their own invention.

32. For a Machine for Sowing Plaster, Lime and Ashes; Julius Notch, Great Bend, Susquehanna county, Pennsylvania, August 17. A long trough, or box, divided into separate compartments, resembling so many small hoppers placed in a line with each other, is to be mounted on wheels, and to be drawn forward in the manner of a cart. The sides of these troughlike hoppers are inclined towards each other as they approach the