US1176218A - Grinding-machine. - Google Patents

Description

M. HARRIS.

GRINDING MACHINE.

APPLICATION FILED MAY 6,'I9I5.

1,176,2*1 8. PaIenIed Mar. 21, 1916.

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MINOR HARRIS, or HARTINGTON, NEBRAsKfA.

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Specification of Letters Patent.

Patented Mar. 2i, i916.

applic-atten sied Mays, i915. serial No. aaaas.

` taiiis I tol make and use the' same.

Myinvention 'relates to new and luseful improvements in grinding machines and moreparti'cularly'to that class adapted to be used for grinding foodV for live-stock, fo'wis, `et`c.,"and`my object is to provide a grinding machine that may be very cheaply, as wellas strong and durably constructed.

A'fu'rther Objectis to so construct the d`e vicetthatzhorse power may be applied thereto to operate the same.

A further object is to provide'means for regulating` the crushing rollers for fine or coarse grinding. And a further `object is to provideV means for causing y theA crushing rollers to travel toward each other when the driving mechanism is rotated either to the right or left. .y

Other objects and advantages "will be hereinafter set forth and-dimore particularly pointed out in the accompanyingV specifica- 131011; M y.

In the accompanying drawings whicliare made a part of this application, Figure 1 is a vertical sectional view through the grinding machine. Fig. 2 is a horizontal sectional view as seen on line 2 2 of Fig. 1, with part of the device omitted. Fig. 3 is a sectional view through the upper portion of the device as seen on line 3-3 of Fig. 1. Fig. 4 is a top plan view of the power applying gear removed, and Fig. 5 is a plan view of the frame portion of the device.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the `several views, 1 indicates the supporting frame of the grinder, which is preferably in the for'm of a ring, to which are attached any suitable form of supporting legs 2,-the upper face of the supporting frame having ears 3 eX- tending upwardly therefrom and arranged in pairs, between which are rotatably mounted friction rollers 4 for the reception of the base 5 of the driving gear 6.

The1 driving gear 6 is constructed :in "circular formation and thebase member thereof eXtends-late'ially from the lower edgel ofthe driving gear soas to forni a face to bear upon and travel'over the rollersl when the driving'gear-isiotated, and in order to retain the gear in position over the rollers, straps 7, orV the like, are-attached to the outer edge of the supporting frame 1 and have their upper ends bent inwardly and extended overthe upper face of the` base 5, thus retaining the driving geariii positionover ,the'rollers l Supported from the frame 1 `byrnean's of brackets, orthe like 8, isa housing 9 which is preferably constructed oblong and has mounted therein a pair of crushingrollers 10 and llwhich extend longitudinally of the housingV and findbearings in .the end walls thereof, said rollers `having shafts 12 and 13 respectively extending from each end thereof lto receive pinions 14: and 15 respectively, the teeth-of which mesh with the teeth 16 of the driving gear 6 and which cause'said rollers'to revolve when the driving gear is operated. y l

Each crushing roller isiprovided with` but one pinion and in order to cause therollersV to'rotate toward each otlierwhenthe driving gear 6 is givena righthand drive, the pinion 14 is engaged with the shaft 12 at the-left hand end of the roller, while -the pinion 15 is attached to the shaft 13 at the right hand end of the roller 11, but should thel driving gear be given a left hand drive, the two gears should be shifted to opposite ends of their respective crushing rollers.

Extending upwardly from the housing 9 and supported by the end walls thereof is a hopper 17, which is preferably iared and has its lower end terminated immediately above the crushing rollers 10 and 11, the opening at the lower end of the hopper being of less width than the combined width of the two crushing rollers, thereby causing the grain, etc., contained within the hopper to pass between the rollers.

Extending longitudinally through the hopper 17 is an agitator 18 having lingers 19 thereon, and when rotated will agitate and feed the contents of the hopper into engagement with the rollers. One end of the agitator has a shaft 20 projecting therefrom, the outer end of which carries a gear 2l, which gear meshes with the gear 14e to cause the agitatorV to rotate when the mill is operated.

In order to regulate the amount of grain, etc., admitted to the rollers for crushing purposes, a slide 22 is introduced through one wall of the hopper, adjacent its lower end, and by moving the slide inwardly or outwardly, the amount of grain, etc., being fed to the rollers may be regulated.

The roller 1l has its shaft 13 extended through elongated slots 23 inthe end walls of theliousing and coperating with said shafts 13 are bearing blocks 24 which blocks coperate with adjusting screws 25 extending through threaded openings in the wings 26 at each end of the housing 9, the outer ends of the adjusting screws preferably having hand wheels 27 thereon for turning said screws to adjust the roller 1l toward or from the roller lO whereby the product will be ground to a finer or coarser degree.

The gear 6 is rotated in any preferred manner, but preferably by attaching a sweep 28to the verticalface of the gear, to which a draft animal is hitched, a lead pole 29 being also attached to the gear Gat a distance from the sweep to properly guide'the animal in its travel around the mill.

In view of the simplicity of this device, it

can be very cheaply constructed and at theV same time rendered strong and durable, and by providing the adjusting screws for one of the rollers, the food may be ground to a finer or coarser degree as the occasion may require.

It will likewise be seen that by mounting the driving gear upon the friction rollers 4, as shown, the mill may be easily operated in view Aof the lightV running qualities of the parts.

Having thus fully described my invention what I claim as new and desire to'secui'e by ALeiters Patent of the United States is adjusting screws, and an angular shaped aring hopper engaged within the end walls' of the housing adapted to convey food particles into said housing to be crushed by said" rollers.

2. A grinding mill comprising a pair of crushing rollers having shafts extending beyond each end thereof, a single driving pinion for each roller adapted for'attachnient to either end of the shafts, and a circular driving gear engaging both of said pinions for rotating'said crushing rollers, one pinion beingat the end of one shaft and the other pinion at theV opposite'end ofthe other shaft when the gear is rotated in one direction and on the opposed ends of saidV shafts when the gear is rotated in the oppo-V site direction wherebysaid rollers will be caused to rotate toward each other at al1 times.

In testimony whereof I have Vsigned *myy name to this specification in the two subscribing witnesses.

MINOR HARRIS.

presence of Witnesses:

V. C. HERTERT, Y SAMUEL A. SCHAGER.

Copies of this patent may he obtainedfor ve cents each, 'by addressing" thevv Commissioner of Patents,

" Washington, D. C. l

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