US 1079465 A
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A. L. BAUSMAN. GRINDING MACHINE. APPLICATION F'ILED JULY 21,1910.
1979 11 5 Patented N0v.25, 1913.
3 SHEETS-SHEET 1.
A MW; W 1% I V A TZORNEY.
A. L. BAUSMAN. GRINDING MAGHINE. APPLIOATION FILED JULY 21,1910.
Patented Nov. 25, 1913.
3 SKEETS-BHEET Z.
BY R A TTORNEY.
WITNESSES'E Q W I #a/ WAM ALL. BAUSMAN. GRINDING MACHINE. APPLIUATION FILED JULY 21, 1910.
1,079,465. Patented Nov. 25, 1913.
a SHEETS-SHEET a.
[Z l k) W Z ATTORNEY.
A LON ZO LINTON ZB-AUSMAN, OF GHI COPEE, MASSACHUSETTS.
To all whom it may concern:
Be it known that I, ALONZO Lm'ron BAUS- MAN, a citizen of the United Statesof America, residing at Chicopee, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in- Grinding-Machines, of which the following is a specification.
This invention relates to improvements in grinding mills and is articularly adapted ng cocoa beans. The object of the invention is in vidin means for rapidly and thoroughly grinding or disintegrating the cocoa bean so that the particles will be of uniform size and yet at the same time prevent the cocoa but-v ter from being separated from the solid matter of the bean.
The invention consists broadly in providing a disk or bur element, the opposite sides of which are roughened and so mounted as to rotate betweenbppositely disposed fixed disks or burs and with means for feeding the bean simultaneously to the opposite sides of the grinding 'disk, as described and claimed.
A further obj-ectof the invention consists in providing a gate element which will e'rmit the beans to be forced or pushed into the grinding space between the disks and at the same time prevent the pressure, due to the grinding operation,
from forcing the beans back into the receptacle or hopper.
A further object of the invention is to provide means for accurately spacing the fixed grinding disks or burs from the rotatable bur, which consists preferably of a spacing adjustment and spacing sleeves.
In the drawings forming part of this a plication,Figure 1 is a vertical, longitud inal, sectional view on the line11-1 of Fig. 2 showing the manner in which the fixed rinding disks are adjusted towards and from the rotatable disk; also indicating the gate construction which permits the beans to be forced intothe grinding space and at the same time prevent their escape from this space. Fig. 2' is a plan view of the machine showing the means by which the main shaft.
is rotated, also the hoppers for receiving the material to be ground, and a top view of one of the micrometer adjustments. Fig.
3 is a transverse sectionahviewon the. line 3-3, Fig. 1, showing the worm construction, the hopper, and'the shaft in cross section. Fig, 4 is a sectional plan view onthe line of Fig. 1 showing the grooves through Specification of Letters Patent. Application filed July 21, 1910. Serial No. 573,124.
pro-- beans forward but prevents Patented Nov. 25, 1913.
face and the drive-shaft in cross section.
6 is a detail sectional view on the line 6-6, Fig. 5 showing the relation of one of til el fixed and the movable grinding plate or is z.
Referring to the drawings, a designates the base portion of the machine that is provided at its opposite ends with'shaft-supporting standards 6 and c, the shaft being indicated at d. The driving-pulley is indicated at e which operates the shaft f on which the meshes wit a large gear k that is secured to the shaft d. On the opposite end of this shaft is keyed the grinding disk or bur i by means 'of the key m. outer end of the shaft 03 by means of the threads m 'is a cylindrical element m, which 1s provided with spiral shaped grooves 1a..
This cylindrical element rotates in the opening of the head pieces of the machine. Located transversely to the axis of the shaft d is a short shaft 0 and on this shaft is secured a worm gear which engages the s iral groove or threa s n of the cylindrical e ement m. The wheel, or worm-gear p serves the purpose not only of-feeding the their return from therinding spaces between the fixed and rotata 1e grinding members.
inion g is secured. This pinion Secured to the 9 and 1' designate grinding plates that are provided with roughened surfaces and are located onopposite sides of the rotatable disk or plate 21. These lates are secured to the castin or cooling "c ambers e and t by means of t e bolts u.
'vdesignates the cored out portion of the chambers s and t into which cooling water is permitted to pass by means of the pipes to and w, as shown in ig. 5. The members 8 and t have openings 8 and t (see Fig. 4-) which are provided with. grooves s and t and in which is located the cylindrical rotatable members m and m respectively.
In order to accurately adjust the cham- 'bers s and t from the rotatable dplate z,
whereby the grinding spaces 9 an a may bethe same, I provide bolt members 3 threaded at one end, as shown at 4'; and 10- cated betweenthe chambers s and t is a sleeve 5 that threads into anothersleeve 6.
-- These two threaded sleeves comprise a span- J'ing. element which, after being accurately adjusted, is placed" on the baits 3 and material into contact with the bur an clamped between the members 8 and t by means of the nuts 4.
The hoppers for receiving the cocoa beans which are to be ground are shown at 9 and 10 and are provided with a sliding gate 11 past which the beans flow to an opening 12 in the cooling chambers s and 15. These openings communicate with the grooves or channels it in the rotatable members m an m which are secured to the shaft d by means of the threads m and key m Packing rings 14 and 15 are located at opposite ends of the cylindrical elements m andm and bolts16 are provided for adjusting the packing rings 1 1 soas to provide a tight joint at the end of the part m and about the shaft d.
The operation of the grinding mill is as follows: Assuming the shaft d to be rotated and the hoppers 9 and 10 supplied vwith beans which fall downward through the opening 12 into the spiral shaped grooves n, of the cylindrical elements on and m, the rotation of these parts in'the openings 8 and t of the chambers s and it causes the worm gear 79 to be rotated by means of the grooves 01,, the effect of which is to feed the beans forward in opposite directions through the openings 8 at the center of the fixed members q and 9" which openings communicafe with the opposite grinding sides of the rotatable member 6. The worm-gears p serve the double effect of feeding the beans.
forward and at the same time preventing their escape by the outward pressure during the grinding operations. The spiral grooves 8 t in the members .9 and t communicate with. the outlets s so that when the cylindrical members m and m are rotated their spiral grooves n will cause the beans to be moved or pushed forward into the grinding spaces surrounding the disk '5 above the shaft d.
-Fig. 1 shows the material after being ground escaping into the receptacle 16 from the opposite sides of the disk 'i.
In order to vary the fineness of the ground product, the operator, by adjusting the sleeves 5 and 6, can accurately adjust the spaces 3 and z. The roughened sides of the disk 11 are indicated by 20 and 21 and that of the fixed disks at 22 and 23.
What I claim, is
1. In a grindin machine, the combination with a rotata le bur or plate member, a shaft for supporting said member, a sleeve prov ded with grooves thereon which communicate with a hopper for receiving the material to be ground, a worm-gear operable from the grooved sleeve for forcing the for preventing its return movement during the grinding operation.
the material to 2. In a grinding machine, the combination with the shaftthereof, a rotatable grinding disk, a pair of fixed grinding disks oppositely disposed to the first mentioned disk and having openings through their centers, and means including a grooved sleeve and worm-gear driven from the shaft for simultaneously forcing the material to be ground through the openings and into engagement with the said disks.
3. In a grinding machine, the combination with a rotatable shaft, a pair of grooved cylindrical members carried thereby and secured thereto, a worm-gear engaging said grooves, a rotatable grinding disk carried by the shaft for effecting the grinding, fixed grinding disks oppositely disposed to the grinding disk, said ears being designed to force ment with the rotatable grinding disk, and means for axially adjustinv the position of the said fixed disks whereby the spaces on the opposite sides of the grinding disk are adjusted.
4. A grinding machine of the class described comprising a pair of fixed grinding members, a rotatable grinding member located therebetween, means, including a toothed wheel and a rotatable feed member, for forcing the material to be ground into the grinding spaces on the opposite sides of the grinding members, and or preventing its escape.
5. A grinding machine comprising a pair of coacting members, a rotatable bur member therebetween, a shaft, the fixed members having spiral grooves leading to the rotatable' bur member, cylindrical members having spiral grooves secured to the shaft, a toothed feed wheel operable from the grooved cylindrical members for forcing be ground toward the rotatable bur member, and means for adjusting the fixed members toward and from the rotatable bur member, as described.
6. A grinding machine comprising in combination a rotatable shaft, a grinding member mountedthereon, two fixed grinding members between which the first mentioned grinding member rotates, said fixed members having holes through which the material to be ground is fed to the grindin members, sleeves mounted on said shaft an extending through said holes to feed the material, and members cooperating with said sleeves to prevent the material from being forced back when once fed to said grinding members.
ALONZO Lm'rou BAUSMAN.
K. I. OLEMONS, I-IARRr W; BOWEN.
the material into engage-