Cooper (a.s.signors to themselves and Fiancis Warner), New Haven, Conn.

We claim the arrangement of the cylinder, A, and outer cylinder, C, so as to form a water s.p.a.ce, D, and combined with covers, E and G, so as to form a chamber, F, above the water s.p.a.ce, D and ice cylinder, A, so that the cover, E, forms the bottom of and the cover, G, the top of the said chamber, in the manner and for the purpose herein set forth.

71,900.--CONSTRUCTION OF STAMPED SHEET METAL KETTLES.--Frederic G.

Niedringhaus and William F. Niedringhaus, St. Louis, Mo.

We claim the spout of a kettle when formed by pressure from the bottom and top plate of the kettle, when constructed substantially as shown and specified.

71,901.--BREAST STRAP SLIDE.--O.B. North (a.s.signor to O.B. North & Co.), New Haven, Conn.

I claim, 1st, The arrangement of the hinged tongue, E, upon the plate, A, so as to cover the ring, substantially in the manner herein set forth.

2d, Constructing the hook or projection, D, upon the inside of the plate, by forming an opening, d, through the plate, substantially as and for the purpose herein set forth.

71,902.--SNOW PLOW.--Abel Nutting, Quincy, Ma.s.s

I claim the rotary plow, arranged to operate substantially as set forth.

Also, in combination with such a plow, inclines, or shares, fixed, with respect to the frame by which they are supported, substantially as described.

71,903.--STEAM GENERATOR.--Isaac R. Oakford, Philadelphia. Pa.

I claim a steam generator, composed of a series of cylindrical boilers, of round ends, provided with openings for steam and water, and arranged in a vertical and inclined position, in the manner and for the purpose above set forth and described.

71,904.--CASTER FOR FURNITURE.--P.B. O'Brien and Wm. E. Sparks, New Haven, Conn., a.s.signors to P.B. O'Brien.

We claim the arrangement of the spring, a, in the spindle, B, and combined with the socket, C, so as to operate in the manner substantially as described.

71,905.--RAILWAY FROG.--Staats N. Park, Bloomsbury, N.J.

I claim, 1st, So constructing the frogs of railways that the frog plate and the rail or track sections, guard rails, and frog point are separate from each other, and so that the rail sections and guard rails and frog point can be inserted in or attached to and detached from the frog plate, for the uses and purposes set forth.

2d, So constructing the frogs of railways or the frog plate, that the track rails of any railway can be extended upon and combined with such frog plate to form the track or rail section of the frog, substantially as and for the purposes set forth.

71,906.--HARVESTER.--Henry W. Pell, Rome, N.Y.

I claim. 1st, The carriage, C, supported at both ends on wheels or rollers, cc, running on a guide way, S, substantially as and for the purposes specified.

2d, The rib or groove joint between the friction rollers and guideway, to sustain the lateral pressure, as set forth.

3d, The clevis pin or whiffletree bolt, B, attached to the center of the carriage, C.

4th, The independent attachment of the draught clevis to the whiffletree bolt to permit the independent oscillation of the whiffletree without affecting the clevis.

71,907.--MEDICAL COMPOUND.--M. Perl, New Orleans, La.

I claim the medical compound herein described, when made by the process and composed of the ingredients herein specified, in the proportions stated, for the purpose set forth.

71,908.--MACHINERY FOR SHAVING AND SLOTTING SCREWS.--Elijah S. Pierce, Hartford, Conn.

I claim, 1st, The combination of the cam, M, the sliding frame, Y, the spindle, A, the pulley, P, the clamp, C, the spring, S, and the rest, R, or their equivalents, with a shaving tool, and one or more nicking saws, substantially as herein specified.

2d, The combination of the sliding frame, Y, the spindle, A, and the clamping device, C, with a shaving tool and one or more saws, substantially as described, for the purpose of shaving, nicking, and turning screw blanks or other similar articles, while held in the same jaws.

71,909.--DOUBLE SCREW.--Elijah S. Pierce, Hartford, Ct.

I claim the double screw herein described and shown, as a new article of manufacture.

71,910.--APPARATUS FOR PRESERVING MEATS, FISH, POULTRY, AND OTHER PERISHABLE ARTICLES.--Charles F. Pike, Piovidence, R.I.

I claim, 1st, Constructing a tubular ice box, with holes or openings in the tubes or pipes, at or near the bottom, to let the air out into the chamber, F, and slots or openings into the ice receptacle, reservoir, or depository, near the top, and so get the combined and double purpose of radiation, conduction, and internal circulation of the air in the chamber, F, substantially as and for the purposes set forth and described in the drawing and specification hereunto annexed, without confining myself to any particular form, size, or shape of the pipes or tubes, whether they be vertical or horizontal, round, square, oval, oblong, or in any other form, neither do I confine myself to any particular form of ice receptacle, reservoir, or depository.

2d, The perforating or making slots, holes, or openings in the tubes or pipes, near the bottom, for the purposes set forth and described, howsoever the same may be made, whether used in connection with the ice receptacle, reservoir, or depository, as described, or without the openings in the ice receptacle, reservoir, or depository, for the purpose of the rotating of the air.

3d, The ice receptacle, reservoir, or depository, with its openings to let the air into and on to the ice in this ice receptacle, reservoir, or depository, for the purpose of taking off the moisture in the preserving room, at or near its top, whether the tubes connected to the bottom of this ice receptacle, reservoir, or depository, are perforated or not, or whether the ice receptacle reservoir, or depository, is removed altogether, and the tops or collars of the tubes or pipes are perforated.

4th, The ice box, receptacle, reservoir, or depository, A, as described, pipes or tubes, B C D L, pan, E H, room, F, substantially as described and set forth, with their appendages.

71,911.--MULTIPLYING REFLECTORS FOR PHOTOGRAPHIC CAMERA.--D.W.S. Rawson, Peru, Ill.

I claim, 1st, The reflector box, A, the doors and shade wings, B B, the bars, C C, the non-reflecting division, D D, surrounding and between the several mirrors, the base board, F, and the slide board, G, and the double pivot, H, when used for the purposes herein described.

2d, The use of the lever for the purpose of adjusting the reflectors.

3d, The moving of the reflectors with the slide, G. to produce more than one set of impressions on the same plate, or an equivalent movement.

71,912.--CAR SPRING.--Wm. F. Ray, Fort Wayne, Ind.

I claim a series of reflexed springs, so constructed that the bows slide into each other, the whole being adjustable so as to regulate the amount of elasticity, as described.

71,913.--LAMP BURNER.--Henry Read, Providence, R I.

I claim the skeleton bottom, B, in combination with the perforated cylinder, C, and cone, D, when constructed and arranged substantially as described and for the purpose specified.