RECENT AMERICAN PATENTS.

Enos Richmond, of Troy, N. Y., has invented a steak tenderer, having

a plunger studded with chisel-pointed rods, and arranged in a case in

connection with an elevating spring. A blow upon the knob at the top

of the plunger forces the chisel-pointed rods through holes in the

casing into the meat, the casing resting on the surface of the steak.

Messrs. A. W. Southard and Volney R. Sears, of Falls City, Neb., have

patented an improved invalid bedstead, which is provided with

ingenious mechanism for placing the invalid in different positions.

An improved spring attachment for carriage tops, which is designed to

prevent the rear bow from being bent by the weight of the top when

turned back, has been patented by Mr. Robert E. McCormick, of

Doylestown, O.

Mr. Espy Gallipher, of Schellsburg, Pa., has devised an axle journal

having a groove lengthwise upon its upper side which extends back upon

the surface of the axle and communicates with an oil cup. A sliding

rod occupies a portion of the groove; when this rod is drawn out it

permits the oil to fill the groove; when it is pushed into the groove

in the axle, the oil is ejected and a further supply is cut off.

An improved pill machine, invented by Messrs. W. N. Fort and R. R.

Moore, of Lewisville, Ark., is adapted to the manufacture of pills in

large quantities. The machine has mechanism for grinding and mixing

ingredients, a grooved wheel and trough for forming the pills, and a

device for applying powder.

An improvement in millstone adjustments has been patented by Mr.

Stephen P. Walling, of South Edmeston, N. Y. This invention consists

in a screw applied to the end of the mill spindle on which the stone

is rigidly held, so that the running stone may be forced by the screw

away from the stationary stone and held against the action of a spring

at the opposite end of the spindle, the object being to prevent the

stones from becoming dulled by contact with each other.

An improved attachment for sewing machines for soaking or waxing the

thread as it passes the needle, has been patented by Mr. Pedro F.

Fernandez, of San Juan, Porto Rico. The invention consists in a frame

secured to the arm of a sewing machine by a thumb-screw, and provided

with a clamping device for holding wax or soap.

A novel combination of a toggle and springs and levers for operating a

drag saw has been patented by Mr. Harvey Hughes, of Wheat Ridge, Ohio.

The saw, while properly guided, is free to move up or down without

affecting the leverage.

An improvement in filters, which consists in re-enforcing the felt

disk with a backing of wire cloth to enable it to resist heavy water

pressure, has been patented by Mr. B. P. Chatfield, of Aiken, S. C.

A basket having light sheet metal sides attached to a wooden bottom by

crimping the edges over a rib on the periphery of the bottom, has been

patented by Mr. Samuel Friend, of Decatur, Ill. The handle and lid may

be easily removed to permit of packing and storage.

An improved cross bar for fastening doors, patented by Mr. Richard

Condon, of La Salle, Ill., has a spring acted portion which engages a

socket on the door casing, and is retained in that position by a

spring catch.

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Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 31 / 162 题