the shuttle which carries the filling thread so that it shall revolve hori. zontally in a circular shuttle race, said shuttle being constructed with a curved front and pointed nose, which shall travel in a circular guiding groove sunk below the bottom of said race, so that the shuttle shall inwardly pass through the loop formed in the needle thread; all as hereinabove set forth.

We also claim the pad or washer under the spring arms which carry the shuttle for keeping the filling thread straight, as herein before explained. Furthermore, we claim the combination of the wide spring, c1, c1, and the bent lever spring, f1, f1, operating as hereinabove described, or any contrivance substantially equivalent thereto, for relaxing the needle thread when the loop is to be formed, and holding it rigidly when each stitch is to be tightened, as hereinabove set forth.

We also claim the converging nipper springs through which the needle, &c., passes to keep the thread up, and prevent the needle from splitting or breaking it, as hereinabove set forth.

We also claim the combination and arrangement of the spring arms, q', q', q', q', with the cam ledge, s1, s1, or any other means essentially the same, for the purpose of disconnecting, alternately, said arms from the shuttle, for the purpose of allowing the shuttle to pass through the loop, as herein described and represented.

SHERBURN C. BLODGET,
JOHN A. LEROW.

No. 189.—Improvement in Tanning Leather by Tannin and Acids.

What I claim and desire to secure by letters patent, is

First. The process of removing hair and wool from hides and skins, and of "liming" them, so called, preparatory to tanning, by the use of a composition of lime, wood ashes, or potash, and of salt, called composition No. 1, in the manner above described. I also claim the use of a composition of lime and wood ashes, or potash, without the salt; but I do not claim either of these materials separately by itself.

Second. The process of tanning hides and skins by the use of any kind of tannin, in combination either with the muriatic acid of commerce or with muriatic acid generated by a mixture of sulphuric acid and salt, in water, with the tannin, in the manner substantially as above described.

W. W. REID.

No. 190.—Improved arrangement of Steam Boiler, and Furnace thereof

What I claim as my improvement in steam boilers, and desire to secure by letters patent, is the combination of a fire chamber and a water casing, the upper horizontal sections of both of which are greater than their lower, with a descending flue, the fire chamber and water casing being so arranged, with respect to each other, that the larger sections of the one adjoin the larger sections of the other, substantially in the manner and for the purposes herein set forth.

I likewise claim the injection of a jet or jets of air at the flues or passages which connect the combustion chamber with the descending flue, for the purpose of igniting the gases and retarding their progressive motion towards the bottom of the gas chamber.

HORACE BOARDMAN.

No. 191.-Improvement in Carriages.

What I claim as my invention, and desire to secure by letters patent, is the arrangement of two bars, or reaches, placed in connexion with the straight reach, as above described, and in combination with the spring rod and cross bar, substantially in the manner described.

JOHN JONES.

No. 192.-Improvement in Cutting Stone.

What I claim as my invention, and desire to secure by letters patent, is the method, substantially as above described, of dressing, facing, or reducing stone, and other like materials, by means of a rolling edge or edges, acting against the face or surface of the material to be worked, substantially as herein described.

CHARLES WILSON.

No. 193.-Improvement in Fire Arms.

What I claim as my invention is

First. The combination of the two independently adjustable braces, extending one on each side of the breeeh chamber containing the charge that is being fired, to regulate and accurately determine the joint between the breech and barrel, substantially as described.

Secondly. I claim the breech opening and closing on an axis which is parallel to the main barrel, and secured and regulated by the parts, substantially as described.

WM. W. HUBBELL.

No. 194.-Improvement in Evaporators and Condensers.

What I claim as my invention, and desire to secure by letters patent, is the partition (n) within the tank, for the purpose of dividing the water of the evaporator from that of the condenser, in the manner and for the purposes substantially as herein set forth.

EDWARD LYNCH.

No. 195.-Composition for covering Hams.

I do not intend to claim as my invention the covering of meats, or other articles, with paper and cloth, or other flexible material, previous to coating them with my preserving composition; but what I do claim as my invention, and desire to secure by letters patent, is the formation of a preserving composition for coating meats, cheeses, fruits, vegetables, &c., by the union of rosin, shellac, (or seed lack,) and linseed oil, (or other oil of a similar nature,) substantially in the manner and in nearly the proportions as herein set forth.

HORACE BILLINGS.

No. 196.-Improvement in Washing Machines for cleaning Rags.

What I claim as my invention, and desire to secure by letters patent, is an adjustable rotating water elevator and strainer, arranged substan

tially as herein set forth, in such manner that it can be raised or lowered in the vat of the washing or beating engine, to vary the quantity of water discharged therefrom, or can be raised entirely froin the vat, to stop the discharge of water, or for other purposes, as herein set forth.

I also claim a rotating prismatic screen, or strainer, for straining the water from the paper stock in the vat of a washing or beating engine, in combination with devices for discharging the strained water, the prismatic screen being not only more efficient than a cylindrical screen, but also admitting of more ready repair.

JAMES PHELPS.

No. 197.—Improvement in Machinery for doubling, twisting, and reeling Thread.

What I claim as my invention, and desire to secure by letters patent, is the above described combination of doubling, twisting, and reeling mechanism, or elements, constructed, applied, and operating together, substantially as herein described, whereby I am able to double, twist, and reel each thread by the same machine, substantially in the manner as herein before specified.

FRANK CHENEY.

No. 198.-Improvement in the Machinery for manufacturing Felt Cloths without spinning and weaving.

What is claimed as the invention of the said Thomas Robinson Williams is the method, substantially as described, of forming the bat by the combined use of two endless aprons, which receive the sliver from the doffer or a carding engine or otherwise between them, and from the bat on one of the belts, whilst the other acts as a support, substantially as described.

J. BURROWS HYDE.

No. 199.-Improvement in the Machinery for manufacturing Felt Cloths without spinning and weaving.

What is claimed as the invention of the said Thomas Robinson Williams is the method, substantially as described, of hardening the bat by passing the same between two series or tiers of rollers, covered with cloth or otherwise, and arranged over each other, the one series being provided with a reciprocating end wise motion, for the purpose of felting the bat, and the other series with a progressive rotary motion, for the purpose of feeding the bat through, with or without the use of a trough containing hot water and soap suds, or other matter, substantially as described. J. BURROWS HYDE.

No. 200.-Improvement in Cut off, and working the Valves of Steam Engines.

What I claim as my invention, and desire to secure by letters patent, is

First. The method, substantially as described, of operating the slide valves of steam engines by connecting the valves that govern the ports

at opposite ends of the cylinder with separate arms of the rock shaft, or the mechanical equivalents thereof, so that, from the motion thereof, the valve that keeps its port or ports closed shall move over a less space, while its port or ports is closed, than the one that is opening or closing its ports, and vice versa; while at the same time the two arms by which they are operated have the same range of motion as described, whereby I am enabled to save much of the power heretofore required to work the slide valves of steam engines, and by which also I am enabled to give a greater range of motion to the valves at the periods of opening and closing the ports, to facilitate the induction and eduction of steam, as specified.

And, lastly. I claim the method of regulating the motion of steam engines by means of the regulator, by combining the said regulator with the catches that liberate the steam valves by means of movable cams or stops, substantially as described.

GEORGE H. CORLISS.

No. 201.-Improvement in Door Locks.

What I claim as my invention, and for which I desire to secure an exclusive right by letters patent, is making the cases in which the movements of locks and latches for doors are contained double-faced, or so finished that either side may be used for the outside, in order that the same lock or cased fastening may answer for a right or left-hand door, substantially as described.

I also claim the peculiar construction and double action (upon an inclined and horizontal track, or way) of the locking car, B, as hereinbefore described, and the combination of the locking car, B, and safety cars, G, G, with one another, and with the connecting or vibrating bar and bolt, A, as within described, so as to fasten the bolt, c, securely, and prevent its being picked.

CALVIN ADAMS.

No. 202.-Improvement in the Jacquard Machinery for weaving all kinds of Figured Cloth.

Having thus described my improvements in looms, and pointed out their application to looms for weaving carpets and other figured fabrics, what I claim therein as new, and desire to secure by letters patent, is—

First. In connexion with looms for weaving figured fabrics, depressing the suspension board, or its equivalent, while the corresponding pattern card, acting as a trap board, or its equivalent, is elevated, substantially as described.

Second. I claim working the card prism by mechanism connected with the loom, and whilst the boards, or their equivalents, for working the harness, are not opening and closing the shed, substantially as described. ALEXANDER CALDERHEAD.

No. 203.-Method of attaching Augers to their Handles.

What I claim as new in my invention, and desire to secure by letters patent, is the handle made in two parts, one of which, D, fits in a socket,

B, on the other, A, and carries a bolt, f, screwed at its end, the said bolt passing through a hole in the auger-shank, and screwing into a female screw, or nut, a, in the part A. for the purpose of clasping or firmly holding the auger shank between the ends of the parts, A and D, of the handle or stock, substantially in the manner herein described.

JOHN E. LARKIN.

No. 204.-Improvement in fastening of Scythes to the Snath.

What I claim as my invention, and desire to secure by letters patent, is

First. The mode of attaching and securing the blade of the scythe to the snath, substantially as herein specified, to wit: by clamping its shank between the edge, x, of an aperture, a, in the end of a metal cap secured to the snath and two bearings or points, g and f, on the opposite side of the shank, and on opposite sides of the first-named bearing point, one, f, of the two bearings consisting in a screw, or its equivalent, for the purpose of giving the necessary pressure to clamp it.

Second. The method, substantially as herein described, of setting the edge of the blade more up or down by means of the adjusting screw, g, in combination with the edge, x, of the aperture, a, which forms one of the three bearing points of the shank.

C. S. CLAPP.

No. 205.-Improvement in Steam and Vacuum Gauges.

What I claim as my invention, and desire to secure by letters patent, is

First. The combining with the reservoir of mercury at the lower end of the tube, an elevated chamber, forming part of the reservoir, substantially as herein described, so that the zero-point may be high enough to be visible above the reservoir, as herein described, and also that the air contained in the tube, being condensed by the pressure of the mercury in the elevated chamber, may furnish more desirable divisions on the scale when very high pressures are to be indicated.

Second. The producing a partial vacuum in the tube of the steam gauge at the time of filling it with mercury, for the purpose of bringing the zero point high enough to be visible above the reservoir, and also in order to prevent any partial vacuum produced in the boiler from draining all the mercury out of the tube.

Third. Surrounding the lower end of the glass tube with a metallic cylinder, provided with a cap or plug at its lower end, for protecting the glass tube, and allowing the mercury only to pass slowly either through a very small hole or between the threads of the screw, and the establishing a connexion between the reservoir and the boiler, substantially in the manner and for the purpose above specified.

Fourth. The method of preventing the air or moisture from passing between the mercury and the cylinder (d) into the tube, either by turning the cylinder or washing it with mercury, or by plunging it deeply into the mercury, as above described.