US482545A

US482545A - Island

Info

Publication number: US482545A
Authority: US
Publication date: 1892-09-13
Anticipated expiration: 1909-09-13

Description

(No Model.) v

J. HARLESWORTH.

SIFTER. l

,Nox 482,545. Patented sept. 1s, 1892.

WITNESEIE INI/INTLE.'

UNITED STATES PATENT OFFICE.

JAMES CHARIiESlVORTH, OF PROVIDENCE, RHODE ISLAND.

SlFTER.

SPECIFICATION forming part of Letters Patent No. 482,545, dated September 13, 1892.

Application iilcd April 13, 1892.

T0 all whom t may concern.-

Be it known that I, JAMES CHARLESWORTH, of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Sifters; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification.

This invention has reference to improvements in sifters especially adapted for sifting ashes, but which may be used, with slight alterations, for sifting other materials.

The object of the invention, is to produce a sifter which may be rapidly reciprocated to thoroughly sift the material placed therein.

The further object of the invention is to produce a mechanical movement by which reeiprocation may be imparted to a mechanism with a higher degree of speed than has heretofore been accomplished.

The invention consists in certain peculiar features of construction and combination of parts, which will hereinafter be more fully described, and pointed out in the claim.

Figure 1 represents a top view of the im proved sifter, the covers of the case being removed. Fig. 2 represents a horizontal sectional view of the sitter to more clearly show its construction and to indicate its operation by means of the improved mechanical movement.

Similar numbers of reference designate corresponding parts throughout.

In the drawings, 5 indicates a case oblong in shape and formed of any suitable material. This ease is furnished with a hinged cover 6 to provide ready access to the interior, and the bottom of the case is cut away at its central portion to form an opening through which the sifted particles may drop. The edge of this opening is provided with a collar 7, generally of sheet metal, adapted to fit the top of a barrel. At the rear of the case 5 is secured the extension-case S for containing the mechanism by which reciprocation is imparted to the sieve.

Pivoted on each side of the case 5 on its interior surface is an arm i), the lower porn tions of these arms being connected together by a shaft 10, and mounted on this shaft are Serial hid/128,947. (No modeLl brackets 11, the upper portions of which are secured to the-lower edges of the side frames 12 12. VThe ends of these frames are connected by the cross-pieces 13 and 14, the piece 13 being braced by the braces 15 15. The front end of the case 5 is provided with the buffer-spring 1G.

Extending through a vertical slot in the back of the case 5 is an arm 17, which is bolted to the end 14 of the reciprocating frame and has a tongue 18 extending inward beyond this end. The sieve 19 may be of any convenient form to be heldin the reciprocating frame and is supported on the tongue 1S and on the braces 15 15.

Formed in partv with the arm 17 or secured thereto is a member 20, the central portion of which is eut away to i'orm an opening, having a plurality of cam-shoulders 21 21 with depressions between them, and the member 2O is supported by the arms 22 22, pivoted to the lower sides thereof and at their upper ends to the sides of the extension-case. The rear end of this case is provided with the spring-buffer 23.

Journaled in bearings secured to the sides of the extension-case is a shaft 24, which is adapted to be rotated by the crank 25, secured to the outer end thereof, and mounted on this shaft is a member 26, having a plurality of arms 27 27, each of which is provided with a bearing-roll 28, journaled in the outer end thereof, the number of these arms being odd wh enthe number of cam-shoulders 21 21 on the member 2O is even, and vice versa. In the drawings the rotatable number 26 is shown as having three of these arms and bearing-rolls, and the member 20 as having two cam-shoulders. It is, however, obvious that these numbers may be varied at will without departing from the spirit of my invention.

By the rotation of the member 26 the rolls 28 will ride over the cam-shoulders 21 and will cause the member 2O to move first in one direction and then in the opposite. The directions in which the arms 27 extend are such that as the bearing-roll on one arm is leaving one camshoulder the roll on the next arm is approaching the apex of the next cam-shoulder, thus producing a very steady and rapid reciprocation of the member 2() and of the movable mechanism connected therewith. It

IOS

is, of course, necessary that the cam-shoulders should be so located that it will not be possible for the bearing-rolls to be brought to bear on the apeXes.

Havingv thus described my invention, I claim as new and desire to secure by Letters Patent-- The combination, with the case 5, having an extension 8, an opening in the bottom of the oase surrounded by the collar '7, the arms 9 9, pivoted at their upper ends to the sides of the case and having their lower ends connected bythe shaft 10, thebraekets 11, mounted on said shaft, a frame composed of the sides 12 12, the ends 13 and 14:, and the braces 15 15, supported on said brackets, and a sieve 19, supported in said frame, of the member 20, pivotaliy supported in the extensioncase by the arms 22 22 and having the arm 17 extending into the oase 5 and secured to end 14 of the sieve-frame, cam-shoulders 2l 21, formed around an opening in the member 20, a shaft 24, journaled in bearings in the sides of the extension-case, rotatable by a crank, and a member 26, having arms 27 27, and bearing-rolls 28 28, journaied in the ends of said arms, mounted on said shaft, as described.

In witness whereof I have hereunto set my hand.

JAMES OHARLESWORTH. Witnesses:

M. F. BLIGH, H. J. MILLER.