US77649A - Charles parker and edmund parker - Google Patents

Description

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ASSIGNORS TO CHARLES PARKER, 0F SAME PLAGE.

Letters Patent-N0. 77,649, dans May 5, 18.68.

IMPROVEMENT IN corren-MILLS.

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TO WHOM IT MAY CONGERN:

Beit known that we, CHARLES PARKER and-Eenrum Pannen, of Meriden, New Haven county, State'of Connecticut, have invented certain new and useful Improvements in Coffee-Mills; and 4we doA hereby declare that the following is a full, clear, and exact description' of the saine, reference being made to. the annexed drawing, making a part of this specification, in which v A Figure I is a sectional view, and

Figure II is a perspective view of a portion of the interior oi the mill.

Figure III is a section on line :e :u of Fig. I, looking down.

' Similar letters indicate similar parts throughout the figures.

Our improvement is particularly applicableto what is known as the boxmill, and itconsists- Firstly, in a manner of so aiiixing the stationary concave bed to the tcp board of the box that it can be' readily removed, when necessary forpcleanilvlg, without taking out any screws ortaking oi the bottom ot'- the mill.

Secondly, in the manner of soaxing the hopper tothe top board that itmay be readily removed for cleaning the mill; and n Thirdly, in so grqoving the spindle of the runner and the interior of the side-pieces which support the bearings for the upper end ofthe spindle, as to form a cracker for the grains preparatory to being acted on by the runner. i

The construction is .as follows: The bed a is made to pass through the top of the box b in the usual manner; but instead ot having projections at bottom, by which it is 'attached by screws to the under side of b inthe usual manner, it has a simple rim, d, tc tit against that under side, and on opposite Vsides a lug, e, is cast, at a suiiicient distance above the rim te include between the lug and the rim al considerable portion of the woodof the top beard. 'lfhroughthe top, b, aperturesf are eut, to admit of the passing through of the lugs, and from f each of those apertures the upper surface of'b is cut dewnto suchinclination as will forni a wedge, as clearly shown in Fig. II, at bl, upon which the lugs will ride up when-the bed is turned around, so as to bring the rin'` t d into contact with the'under side oft, and thus hold the bed iirmly in place.A On the exterior oi' the side pieces g are also lugs, z', which, passingthrough apertures in the inner edge k of the bowl of the hopper, hold that down in the same manner asdescribed for holding a to b. The hopper does not, however; make ajeint with any part oi' a., but, by its iiange l, bears upon the surfaceot the top board 6, as'elearly shoi'vn inFig. I; The ,spindle m of the runner has longitudinal grooves or teeth, n, upon it, which, in. combination withjsimilar grooves er teeth-onthe interior of g, as seen'in Fig. III, act as a cracker, to break thegiains drawn in by the revolution ot'. the spindle, lso that those will readily enter between thegrinding-surfaces.

The bottom board of these box-mills has been heretofore necessarily putfon with screws, inasmuch as from time to 'time it is desirable that thegrinding parts should be taken apart to be cleaned. The bottom had then 'to be unser-owed, (four screws,) as also the bed (two screws) and the hopper(two screws,`) to separate the parts. By our improvement the hopper isvtaken oli` by turning itI partially' around. Then, by introducing the hand through the opening for tlie drawer, 'and turning the bed little, it is readily taken out. As thus the bottom maybe put on' with nails, it will be .seen that at lleast eight screws are saved in the construction, thereby reducing the first cost, aswell as greatly facilitating the cleaning, inasmuch as no tools are required for taking the mill apart.

It will be observed, in this invention',A that the runner is-suppoited'at its upper end by the side-pieces.-g, l

which extend up into the hopper, as-elcarly seen in Fig. I, the hopper resting below the lugs i; that the sidepieces leave an' open space directlyfrom the hopper into the runner; that the straight or vertical part of the runner has ribs or teeth formed thereon, while uponfthe inside of the side-pieces orsupports g, which are inclined to the straight teeth on the runner, are teeth cut across their face, so that the combined action of the vertical part of `the runner end the inside of the side-pieces y,octs es n breaker or cracker when the material is first introduced; and as these open spaces are so for up in the hopper, o large quantity of the material to be ground comes at once in contact with the cracker,` so that by this construction we ore able to grind' very much faster than can be done in mills of common construction.

1. We claim attaching-the stationary grinding-bea a on to the ytop board b by means of lugs c, in combina tion with the :rim d, or apart thereof, the lugsV entering above and therimbelow the top b, or vice versa, substantially ns set. forth. l

2. We also clnimforminga. cracker within the hopper, by extending the side-pieces or supports g up into the hopper, -and so as to form open spaces directly from and within the hopper to the runner, between the scid supports g, and lwhen the said supports are inclined to the runner as described, :md the under und inside'of the supports'g provided with teeth, so as to operate in the manner specified.

t In `witness whereof, we have hereunto subscribed our names. Y

CHAS. PARKER, EDMUND PARKER.

Witnesses .Tom W. MILES, J onNIARKEr.;

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