Images

Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
  • F24B15/00—Implements for use in connection with stoves or ranges
  • F24B15/007—Ash-sifters
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
  • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
  • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
  • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
  • B07B1/30—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro within their own plane in or approximately in or transverse to the direction of conveyance

Definitions

• This invention relates to certain improvements in sitters, and more particularly to a reciprocating screen for sifting sand, coal,V ashes, and other material.
• the object of the invention is to provide a simple, inexpensive, and efficient device of this character by means of which sand and other line'particles may be separated from the gravel or coarser material.y
• a further object of the invention is to provide a reciprocating sieve the screen of'which may be readilyremoved to facilitate the cleaning of the same or to permit the insertionof screens of different mesh suitable to the char- ⁇ acter of the work to be performed.
• a still further object is to pivotally connect' the screen-box to the reciprocating carriage, so that when the screening operation is cornpleted the box may be tilted and discharge the remaining gravel or other coarse material preparatory tointroducing a new charge.
• Figure l is a longitudinal sectional View of a sifterconstructed in accordance with my invention.
• Fig. 2 is a side elevation, partly in section, showing the arrangement of the sand-box.
• Fig. 3 is a transverse section of the same, and
• Fig. 4 is a detail perspective View of the Screen-box and screen detached.
• the bottom of the frame is provided with oneor more openings 5, having chutes or deiector-plates 6 secured to the side walls thereof and through which the sifted sand or other material is conveyed to suitable receptacles adapted to receive the same.
• Journaled in suitable bearings in the side pieces 2 and preferably at a point adjacent the end of the frame is a crank-shaft 7, having a balance-wheel S secured to one end thereof and having a pinion 9 at its opposite end, said pinion meshing with a master-gear 10, keyed to shaft 11, also journaled in the side pieces 2 of the frame.
• the mastergear is provided with a suitable crank-handle 10', which may be used when the sieve is to be operated by hand; but this may be removed and the machine operated by a powerbelt applied to a belt-wheel 11 on the main shaft 1l.
• the shaft 7 is provided with a crank 12, to which is pivotally connected one end of a pitrnan 13, the opposite end thereof being pivotally connected' to a reciprocating carriage 14, mounted in guides 15, secured in any suitable manner to the side pieces of the frame.
• the carriage is in the form of an open rectangular frame and forms a support for a screen-box 16, connected at one end to the carriage by a hinge or pivot 17 and providedV at its opposite end with a means for interlocking with the carriage, a hook 18 and a keeper being shown in the present instance.
• the screen-box is adapted to receive interchangeable sieves, which may be removed for repairs when damaged or for the substitution of screens of different mesh in accordance with the character of the work to be performed.
• Each screen 19V has a preterably rec'tangularfsupporting-frame 20, sliding in suitable guides 21, arranged within the box 16, the rear end of the screen iitting Within a groove 22 in the rear end wall of the box, the front end of the screen-frame being rabb'eted, as shown, so as to lie flush with the frontof the box, a button 23 being employed for locking the screen within the box.
• a drawer or receptacle 24 Slidably mounted within the frame 1 and arranged beneath the screen is a drawer or receptacle 24, adapted to receive the sifted IOO sand or other material when it is inconvenient to convey the same through the openings 5 to separate receptacles.
• the drawer 24 In operation when it is desired to sieve large quantities of sand or other material the drawer 24 is withdrawn from over the openings 5, or, if desired, it may be entirely removed. The sand is then introduced in the screen-box and by applying power to the belt-wheel 11 or by turning the handle 10 the carriage carrying the sieveis reciprocated, the sifted material passing through the openings 5 and the gravel or coarsematerial remaining in the screen-box, which may afterward be tilted and discharged of its contents, as clearly shown in dotted lines in Fig. 2 of the drawings.
• the drawer When it is merely desired to sieve small quantities, the drawer is slid forwardly to a position directly beneath the sieve and covering the openings in the bottom of the frame, the sifted material being deposited in the drawer when the machine is operated instead of passing through said openings.
• the screen may be readily removed to facilitate the cleaning of the same or to permit the insertion of screens of different mesh by releasing the button 23, said screen being slidably and removably secured within the box, as before stated.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Combined Means For Separation Of Solids (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=2808695

Family Applications (1)

Country Status (1)

Cited By (2)

• 1903
  • 1903-03-24 US US14937603A patent/US740194A/en not_active Expired - Lifetime

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