US910048A - Cinder-sifter. - Google Patents

Description

. R. DURRANT & G. E. BALB.

' CIN-DER SIFTBR.

APPLICATION FILED OUT. 28, 1907. 910,048. Patented Jan. 19, 1909,

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UNITED STATES PATENT OFFICE.

OLIVER ROSCO DURRANT AND CHARLES EDWARD BALE, OF OSIIAWA, ONTARIO, CANADA.

CINDER-SIFTER.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed. October 28, 1907. Serial No. 399,601.

T o all whom fit may concern:

Be it known that we, OLIVER Rosco DUR- RANT and CHARLES EDWARD BALB, both of the town of Oshawa, in the county of Ontario, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Oinder-Sifters, of which the following is the specification.

Our invention relates to improvements in cinder sifters, and the object of our invention is to devise a simple and efficient machine of this class, which will be clean to operate and in which the separation will be rapid and complete.

A further object is to produce an ash sifter which is cheap and easily constructed, and yet is not liable to wear out quickly.

l/Ve attain these objects by means of the device illustrated in the accompanying drawings and which consists essentially of an outer wooden or other case open at the bottom and provided with a hinged lid. In the front, is an oblong opening extending from side to side and which is closed by a hinged flap. Extending from a point near this opening, and on the inside of the case is an inclined screen of wire or other suitable material supported in a wooden frame, and journaled in the sides of the case, near the top is another screen which is curved in a spiral form and supported in such form by end pieces. A crank is provided by means of which this latter screen may be rotated.

In the drawings, like characters of reference indicate the same or corresponding parts throughout the several views.

Figure l, is a general perspective view of our invention a portion of one side being broken away to show more clearly the manner of supporting the inclined screen. Fig. 2, is a cross sectional view in perspective showing the spiral screen. Fig. 3 is a detailed view showing the manner of supporting the flap I and for holding the saine in closer position.

A is the outer casino of wood provided with a semi-cylindrica cover B of sheet iron or other suitable material nailed at the edges to semi-circular seinents C connected together by cross strips D-D.

E are hinges attached to the cross strip D and which connect the cover to the case.

The sheet metal of the cover extends below the strip D at the front of the case thus forming a flap which prevents the escape of dust.

F is the opening in thc front of the case which is closed by the flap G.

I-I is a strip of canvas or other material which is nailed along one edge to the inner side of the case. The other edge is inserted between the flap G and a strip of metal I which is attached to the flap by means of rivets, which rivets also extend through the canvas I-l. The ends of the strip I are pressed so as to form portions J of circular section which portions extend through holes in the sides of the case so as to permit of the flap being swung. One of the said rounded portions J is longer than the other, and is bent at right angles to the body of the strip and extends forward as indicated in Fig. 1, so as to project beyond the front of the case.

' K is a latch pivoted to the end of the case and extending forwardly towards the front thereof. As shown the latch is made with a twist therein and when the flap G is closed is pressed between the portion J and the front of the case and the twist engaging with the said portion J serves to hold the flap securely closed, thus preventing the escape of dust.

L is the inclined wire screen attached to wooden side pieces M and prevented from sagging by cross rods N. The upper end of the screen rests against the back of the case, while the lower end is supported by wooden blocks, attached to the sides of the case, one of which is shown at O in Fig. 1. The screen L terminates at a distance from the front of the case sufficient to permit the flap G to just close the gap when it is thrown back, and it projects above the blocks O so that when the flap G is thrown back its surface comes flush with the surface of the screen.

P is the spirally curved screen and consists of two end pieces Q of spiral outlinel around the periphery of which is nailed or otherwise fastened the screening P which is prevented from sagging by rods placed at intervals and extending between the end pieces. This screen is rotatably mounted in the case A towards the top thereof so that it clears the inclined screen by a small dis- `to theright; on account of their'weight, the

contents keep more or less together and in the sameplace, and the motion of the screen causes them to be agitated, separating the ashes from the cinders. The ashes pass through the spiral screen and fall onto the Vinclined screen through which they pass, and

settle at the bottoni of the case. The motion of the crank handle is continued until the clinkers are all collected in the smaller curved portion of the spiral screen, the separation being complete, or nearly so. The opening F is then uncovered by raising the latch K and throwing the flap Gr back until it rests on the blocks O, its surface being then flush with the surface of the inclined screen. The motion of the crank is then continued, and When the opening in the spiral screen faces the ground the clinkers fall out of the said screen onto the inclined screen down which they travel passing through the opening F into a suitable receptacle placed beneath it. The fall from one screen to the other, and the subsequent travel down the latter eifectually frees the cinders from the ashes.

In the drawings We have shown the case of our ash-sifter Without a bottom so that the ashes fall to the ground, the ash sifter being placed at any desired spot. l/Ve may however provide a drawer at the bottom of the case for the reception of the ashes.

lhat We claim as our invention is:

In a device of the class described, the

4combination With the casing having an open- OLIVER BOSCO DURRANT. CHARLES EDWARD BALE.

Witnesses ROBERT GroWANs, E. 7. MONEILL.

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