US1611675A

US1611675A - Scalper and cut-off attachment for feed mills

Info

Publication number: US1611675A
Application number: US80453A
Authority: US
Inventors: Gilman J Prestemon
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-01-11
Filing date: 1926-01-11
Publication date: 1926-12-21
Anticipated expiration: 1943-12-21

Description

Dec. 21 1926. 1,611,675

G. J. PRESTEMON SCALPER AND CUT-OFF ATTACHMENT FOR FEED MILLS Filed Jan. 11 1926' fm enfor 6. JPres fame/2 Patented Dec. 21, 1926.

UNITED STATES PATENT OFFICE.

SCALPER AND CUT-OFF ATTACHMENT FOR FEED MILLS.

Application filed January 11, 1926.

My invention has for its object to provide a scalper and cut-oft attachment for feed mills, and to this end consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a side elevation of the invention mounted on the hopper of a feed mill, some parts being broken away and sectioned; and

Fig. 2 is a rear elevation of the same.

The attachment is adapted to be mounted on the hopper 8 of a feed mill. For the purpose of this case it is not thought necessary to illustrate the feed mill more than its hopper for the reason that the action thereof is well known and may be of any commercial form.

Referring now in detail to the invention, the numeral 8 indicates a vertically elongated casing that is square in cross section and open at its upper and lower ends. This casing 4 is mounted on the upper edge of the hopper 3 and forms a vertical extension thereof and may be secured in position in any suitable manner. A segmental cover member 5 closes the upper end of the casing 1 and has at one side a hopper 6, the bottom of which comprises a sliding plate 7 and a hinged bottom plate 8 in diverging relation. The lower horizontal edge of the sliding plate 7 is spaced from the hinged plate 8 to afford a feed opening 7, the

size of which may be varied, at will, by adjusting said sliding plate. The bottom plate 8 is hinged at its top, and its lower horizontal edge portion extends below the feed opening 7 and said plate is adjustably held by a hand screw 9. Grain is gravity-fed into the hopper 6 from an overhead storage tank, not shown, through a spout 10, the lower end of which extends through the top of the hop per 6.

Mounted to rotate in the upper end of the casing 1 and its cover member 5 is a cylindrical scalping screen 11, the axis of which extends parallel to the feed opening 7 Grain in the hopper 6 is delivered through Serial No. 80,453.

the feed opening 7 onto the upwardly moving side of the scalping screen 11 and all sticks, straws and similar foreign matter will be carried upward over said screen, and precipitated onto an inclined apron 12 mounted in theback of the casing 24 and extending outward therefrom.- A strip of leather 13 or other flexible material is secured to the upper edge of the apron 12 and rubs on the periphery of the rotating screen 11 to remove any foreign material that may adhere thereto.

The scalping screen 11 is driven by a belt 1d that runs over a large pulley 15 on the shaft of said screen and a relatively small pulley 16 on a shaft 17 journaled in bearings on one side of the casing 4 near the bottom thereof. On the front end of the shaft 17 is a large pulley 18 over which runs a driving belt, not shown. The pulley 16 is loose on the shaft 17 and to connect the same thereto, at will, for rotation therewith there is provided a clutch 19, one member of which is formed with said pulley and the other member of which is slidably mounted on iilhe shaft 17 and keyed for rotation therewit To automatically set and release the clutch 19 and to start and stop the rotation of the screen 11 there is formed in the front of the casing 4 below the scalping screen 11 a door opening in which is mounted a door 20 hinged at its lower edge to said casing for outward swinging movement. On the vertical edges of the door 20 are inwardly projecting segmental wings 21 that work close to the sides of the casing 1 at its door opening and form tight joints to prevent the es cape of grain through the casing 4 when the door 20 is open, as indicated by broken lines in Fig. 1.

Secured to the door 20 and projecting rearwardly therefrom on'one side of the casing 41 is a horizontal arm 22 on which aslidable weight 23 is mounted and held in different longitudinal adjustment-s by a set screw 24. The purpose of the weight 23 is to move the door 20 from an open to a closed position and yieldingly hold the same closed.

For operating the sliding member of the clutch 19 there is provided a vertically disposed shipper lever 25, the upper end of which is pivoted to the casing l. A link 26 connects the door to the shipper lever 25, and one end of said link is attached to a bar 27 secured to and extending transversely of the door 20, and the other end portion there of loosely extends through an eye bolt or similar member 28 SWlVGlEtl to the shipper lever just above the clutch 19. A pair of opposing nuts 29, having screw-threaded engagement with the link 26, engages opposite faces of the eye bolt 28 and connects said link to the shipper lever 25 in diiferent longitudinal adjustments.

A stop on the top of the door 20 is ar ranged to engage the casing 4 and limits the closing movement of said door, and stops 31 on the rear upper corners of the side Wings 21 are arranged to engage the-casing l and limit the opening or outward swinging movement of the door 20. In the back of the casing l below the scalping screen 11 is swinging door 82 that affords access to the interior of said casing.

The operating of the scalper and cut-oft attachment for feed mills may be briefly described as follows:

The pulley 18 may be driven from a movable part of the feed mill or from an independent source of pow-er. Grain delivered into the hopper G by the spout 10 is fed through the feed opening? and onto the pe riphery of the scalping screen 11 on its upwardly moving surface. The grain will pass through this scalping screen and be precipitated through the casing 4t into the hopper 3 to the feed mill. All foreign matter such as sticks, straws and the like Will be carried upward on the rotating scalping screen 11 and over the same and be deposited on the apron 12 Which carries the same away from the feed mill. In case any of this foreign matter should adhere to the periphery of the scalping screen 11 the same will be removed by the fle ble strip During the normal operation of the feed mill the door 20 will remain closed. in case the grain is delivered to the feed mill faster than it can be ground the same will pile up in the casing a, and the pressure thereof will open the door 20 against the action of the weight 23 and release the clutch 19 through the shipper lever 25 and connecting link 26 and thereby stop the rotation of the scalping screen 11 and prevent further flow of grain from the hopper 6 until suilicient grain piled up in the casing l has passed through the feed mill to reduce the bulk thereof and the pressure on the door 20. When the pressure of the grain on the door 20 has been released, the door Will again be closed by the Weight 23, and as the door is thus closed the link 26, acting on the shipper lever 25, will again set Learners the clutch and start the rotation of the scalpiig screen.

It will be noted that the hinged bottom plate 8 extends obliquely to one of the radial lines of the scalping screen 11 and by means of the hand screw 9 the lovver horizontal edge of said plate may be adjusted toward or from the periphery of said screen.

From the above description it is evident that the action of the above described attachment is entirely automatic to regulate the feeding of the grain to the feed mill and hence prevent the same from clogging.

What I claim is:

l. A cut-oh"; attachment for feed mills comprising a casing applicable to such a mill, a screen mountd in the casing, means for delivering grain to said screen, driving connections for operating said screen including a clutch, and automatic means arranged to be operated by pressure of the grain piled up in the casing below said screen for releasing the clutch and stopping the feeding action of said screen.

2. The structure defined in claim 1 in Which said automatic means is also adapted to set the clutch vvhen said pressure has been released by the removal of the grain.

3. A cut-off attachment for feed mills comprising a casing applicable to such a mill, a rotatable cylindrical screen mounted in the casing, a hopper having a feed opening arranged to deliver grain to said screen, means for delivering grain into the hopper, driving connections for operating said screen including a clutch, and automatic means arranged to be operated by pressure of grain piled up in the casing, below said screen, for releasing the clutch to stop the feeding action of said screen and for setting the clutch When said pressure has been released by the removal of the grain.

l. The structure defined in claim 3 in further combination with a stripper operative on said screen.

5. A cut off attachment for feed mills comprising a casing applicable to such a mill, a screen mounted in the casing, means for deliverin grain to said screen, driving connections ror operating said screen including a clutch, said casing having a door opening below said screen, an outwardly swinging door mounted in said door opening, yielding means for closing the door, and a connection operated by the opening of he door by pressure of grain piled up in the casing below said screen for releasing the clutch to stop the feeding action of said. Screen and for setting the clutch when said pressure has been released by the removal of the grain.

6. A cut-off attachment for feed mills comprising a casing applicable to such a mill, a screen mounted in the casing, means for delivering grain to said sore-en, driving connections for operating said screen including a clutch, said casing having a door opening below said screen, an outwardly swinging door mounted in said door opening, yield- 5 ing means for closing the door, a shipper lever for operating the clutch, and a link from the door to the shipper lever whereby the opening movement of the door by a pressure of grain piled up in the casing below said screen will release the clutch and stop 10 the feeding action of said screen and for setting the clutch when said pressure has been released by the removal of the grain. In testimony whereof I alfix my signature.

GILMAN J. PRESTEMON.