US901519A - Screening-machine. - Google Patents

Description

G. 1.-& P. 13.3mm. SCREENING MAOHINB.

APPLICATION FILED APR. 2, 1908.

901,519, Patented 001;. 20, 1908.

seer AVAILABLE new ermine rsriin'r errrre.

REORGE ii". BURKE AND PETER D. BURKE, OF ROSWELL, SOUTH DAKOTA.

"methionine Specification of Letter:

Toull whom it may concern."

Be it known that we, Greener. P. BURKE and PETER. D. BURKE, citizens of the United States, residing at Roswell, in. the county of Miner, State of South Dakota, have invented a new and useful Facreening Machine, of which the following is a specification.

This invention relates to a machine designed primarily for screening send, hut it is applicable for separating the fine particles from the cosrse oi other materials.

One object of the invention is to provide a simple, strong and convenient machine for the purpose stated, the ports of which. can be quickly separated or knocked-down and, the supporting frame folded flat to enable the f to es being readily transported from place to place with great case, a. saving of time and cconom" of space.

Another ohjcct of the screening cylinder, the foreminous covering of which may he quickly removed and, if worn out, replaced by anew one, or by one of larger or smaller mesh if so desired with very little loss of time.

A further object of the invention resides in the use of a force feed attachment applied to the cylinder shalt within the hopper and at the mouth of the cylinder to assure the proper feeding of material thereto.

l/Vith these and other objects in 'VlGW the invention consists of the novel construction; combination and arrangement of arts hercinafter described and claimed, re erence being had to the accompanying drawing, in. which Figure his a view in side elevation partly in section of the improved. screening ma chine; Fig. 2 it view in elevation of the tail end of the machine; Fig. 3 a longitudinal section. of the rovoluble screen; Fig. 4 a perspective View of a detail of construction.

Similar reference numerals ere used for the some parts in all the figures.

.ltcforring to the drawing, the numeral! indicates the folding frame supporting the screening mechanism which, in this instance, comprises the vertical legs 2 iti. the head of the machine, the similarly disposed legs 3 at tho tail/end. thereof and cross braves i oxtcndin diagonally between the legs 2 and J) on (will side of the machine. :uo connected lo one another by bolts 5') and h, the latter bolls, joining, the upper ends of the cross Imus-s "l to tho upper curls of the legs 3 and 2': and mo removed when the mo.-

the invention relates to.

These parts chine is to he disassembled, the bolts 5 serving as pivotal points on which the elements of the frame are folded.

The legs 2 and 3 converge slightly towards the top, as represented in Fig. 2, thelegs 3 being" preferably formed of a single piece of material bent to form an arched top 7 on which one of the bearings 8 for the longitw dinol screen shaft 9 is bolted. A cross piece extends between the legs 2 near their upper end to serve as a brace andss a su ort for the upper hem-lug 8 of shaft 9 whic caring is preferably cast integral with said brace. The hearing 8 on the arch 7 is lower than the one at the other end so that the shaft'will in.

cline downwardly towards the tail of the machine.

Mounted on the shaft 9 to revolve therewith is the screening cylinder 10 in communication st its head end. with the feeding mechanism 1.1 end at its tail end with a spout 12 to carry off the material too lar e to pass through the screening material. he screen 10 is constructed with a head and tail ring 13 and 14, respectively, each connected by curved. spokes 1.3 to o. hub 16 fast on the shaft 9. The concave sides of the spokes face the head of the cylinder to facilitate the entrance of material at one end and the exit of refuse at the op positc end. Surrounding the ring gs l3 and. 14 and extending between them the foraminous screen 17 which may hc woven wir i, perforated motel or other material sultable for the purpose, but here shown as woven Wire. The screening material 17 is securely hold in position by a removable frame 18 clampedv on the rings 13 and 14 over said material.

The frame fit is formed of two or more circular hands ll) connected together by a number of narrow parallel slats 20 screwed, rivcted or bolted to the bonds and. equally spaced. The hands arc made preferablyof spring metal and may be in two parts with projecting lugs 21 oppositely disposed on each part and perforated to receive clzunpmg bolts 22, as in Fig. 3, or of a single piece with fastening lugs on one side only, soc Fig.2. After the screening material has been upplied to the rings 13 and i4 and tightly stretched thereon the frame 18, if the bands are in one piece is sprung open and slipped cndwiso over the scrconil'ig cylinder 10 until the cod bands ill surround the rings '13 and 14, the bolts 32 are thou applied and the bonds clamped iirmly around said rings llll') tightly fasteningthe screenii'ig material in 3 place. If the two part frame 18 be used the I parts of the-frame are fitted over the cylin- -.drical screen 10 from opposite sides and clamped. Should the distance between the 1 rings Band 14 be too great for the screening material to retain its shape when the machine is' in operation, one orniore bands 19 may be placed between-the .end bands, and an e ual number of supporting rings 23 place Within the screen 10 for the bands to press against.

The legs 2 project above 8 and are bolted to a hopper 24 into which the material to be screened is thrown. Pro; Lecting rearwardly from the bottom of the opper isa tubular outlet 25 extending a. short distance into the screen 10 and consen trio with the shaft 9 which passes therethrough and through the lower end of the hopper. The head of the screen is closed by a board or plate 26 except for a central opening to admit the tubular hopper outlet 25. By means of the closure 26 the material 'to be screened is prevented from working out of the head end of the screen.

The quantity of sand or other material admitted to the screen 10 is regulated by a slid ing gate 27 movable in guides on the rear Wall of the hopper 24 above the entrance to the tubular outlet 25. liaising and lowering the gate changes the size of the outlet and hence the quantity of material passing to the screen.

Removably secured on the shaft 9 "within the hopper is a force feed attachment 27 comthe shaft bearing hopper at'rachal can now be folde on the pivot bolts 5 into a much smaller and more convenient compass by turning the upper ends of the front and rear pair of legs in wardly towards each other as will be understood. The machine is thus reduced to three conveniently handled pieces, the frame, the shaft and its small wagon or cart and conveyed with case from one locality to another, or if shipped in this condition. less space is occupied and the machine is handled with greater and more quickly than if it were up.

It is to be noted that the rings which support the screening material and the hands by which said screen is held on the rings may be circular, elliptical, pentagonal or of other shape best suited to the purpose desired; and

that where rings'and bands are used in the specification and claims such Words are to be taken in the broadest sense.

Having described our invention what we claim as new and desire to secure by Letters Patent is 1. The combination in screening in achine of a shaft, a cylindrical screen mounted thereon, and a flexibly jointed main frame provided with bearings for said shaft, said frame being longitudinally extensible to permit the removal therefrom of the cylinder and shaft.

2. The combination in a screening machine of a shaft, a cylindrical screen mounted thereon, a longitudinally extensible knockdown frame having bearings for said shaft, the extension of the frame permitting the re- )rising a hub with rearwardly projecting lingers 29 thereon. These fingers are preferably set at an angle to the axis of the shaft 'to force the contents of the ho me! into the screen. The force feed attachment. when not necessary may be removed from the shaft.

The outlet s )out 12 at the tail. bf the screen 10 is removably supported on the frame 1 i-nr any convenient manner as by hooks 30 engaging notches or eyes on one of the cross braces 4 and legs 3. The machine may be operated by a hand crank 31 on the shaft 0, or by power through the pulley 32 on the same shaft.

When the scrceninp machine is to be transported, certain parts thereof are for convenience separated from one another or knocked-down in the following manner. The outlet spout 12 is removed and the bolts moval of the shaft and cylinder and detachable means normally holding said frame in shaft-holding position.

3. The combination in a screening machine of a longitudinally extensible frame formed ofa plurality of pivotally connected sections, detachable means for locking the parts "of the frame rigidly together, bearings on said-frame, a shaft mounted in said bourings, a revolublc screen on said shaft and a feed hopper connected to the frame and having an opening for the passage of the shaft.

, 4. The combination in a screening machine of a shaft, a revoluble screen mounted there on, a flexibly jointed main. frame provided with bearings for said shaft, a hopper supported by the frame and opening into said screen, said hopper having an opening for the passage of the shaft, and crossbraces pivot- 6 disconnected from the upper ends of the cross braces 4 so that theinain frame 1 may be extended longitudinally until the bearin,g 8 on the legs 3 is free of the shaft 9. The crank 31 and the pulley 32 having been removed from the shaft 9 the latter, with the scrcdh 10 and force feed attachment therein is withdrawn from the bearing 8 at the head ally connected. at their lower ends to saidv main frame and detachably connected at their upper ends to said frame, whereby on loosening the detachable connections said main frame may be elongated to permit of .the removal of shaftand sc 5. The combination in as ling machine of a shaft, :1 rcvoluble screen mounted thereof the machine. The main frame 1 with the on, a flexibly jointed main frame comprising attachments and the tail. spout. These parts can be loaded on a a pair of legs at one end provided with a and screen and then folded in an approxibearing for saidshaft anda hopper fixed to mately fiat form.

said legs, a pairof legs at theppposite end of In testimony that we claim the foregoing said frame supportin a second s cross-braces pivotal connected together matures in the presence of two'witnesses.

and to the lower en sof said legs and 'detachably connected for securing the upper I ends of said cross-braces to the 11 per ends of i I said le s whereby on the removal of said de- Witnesses tachab e connections the main framema be a N. E. BRATRUD, elongated to permit the rernoval of the aft C. A. BAKER.

aft bearing, as our own,we have hereto affixedour sig- 15

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