US879366A - Feed device or feed-hopper. - Google Patents

Description

PATENTED FEB. 18, 1908.

H. D. CONWAY. FEED DEVICE OR FEED HOPPER.

APPLICATION FILED MAY 14, 1906.

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UNITED STATES PATENT OFFICE.

HENRY D. CONWAY, OF JACKSON; MICHIGAN.

FEED DEVICE OR FEED-HOPPER.

trated and described in my U. S. Letters Patent No. 793,059, issued to me on the 27th day of June, 1905, although it is desirable for use in numerous other relations.

The objects of this invention are: first, to rovide an improved feed hopper adapted or feeding crushed stone and other coarse materials, which is not likely to be clogged thereby; second, to provide an improved feed hopper adapted to deliver the material very evenly; and third, to provide an improved construction of feed or conveyer screw.

Further objects, and objects relating to deby the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

' A structure embod ing the features of my invention is clearly i ustrated in the accompanying drawing forming a part. of this specification, in which Figure 1 is a longitudinal central section of my improved feed device, taken on a line corresponding to line 11 of Fig. 2, the shaft and screw or conveyer being shown in full lines; Fig. 2 is a transverse section on a line corresponding to line 2-2 of Fig. '-1; Fig. 3 is a transverse section on a line correspond.-

ing to line 3-3 of Fig. 1; Fig. 4 is an enlarged section of the conveyer or screw, taken on a line corresponding to line 4-4 of Fig. 1, and

Fig. 5 is a detail lan showing the arrange- Specification of Letters Patent. Application filed Kay 14. 1906- Saris-1N0. 316.765

mama Feb. 18, 1908.

similar letters of reference refer to similar parts throughout the several views.

Referring to the drawing: A represents the frame upon which the hopper is supported. The bottom. of the hopper A is curved in cross-section, as clearly appears in Figs. 2

and 3, its curvature corresponding to that of the spiral conveyer or feed screw.

' The conveyer or feed screw shaft B is provided with suitable journals at each end, the I body of the shaft being rectangular in crosssection.

.The blade of the conveyer or feed screw made u of sections 0 having hubs C which are co ormedto fit the rectangular portions of the shaft. The hubs C are divided lon itudinally and are secured upon the shaft y keys 0 which are driven into transverse slots 0 formed in the ends of the hubs. These slots 0 are deflected inwardly towards each other at the peripheries of the hubs, so that when the keys are driven into the same their ends are bent, thereby preventing their slipping longitudinally from the slots. This secures the screw sections firmly in position upon the shaft and, at the same time, allows their ready removal, should occasion require, it only being necessary to drive the keys out to free the same. The use of bolts or screws is thus avoided and at the same time the fastening is very secure.

A break or opening 0 is formed at the de livery end of the feed screw preferably by omitting one of the blade sections C. The object of this will be pointed out later.

At the delivery end of the hopper is a guard or shield D which extends inwardly over'the screw to a point above the break or o ening C therein. The guard. D is adjusta ly secured by means of the bolts, (1 arranged through suitable vertical slots d therein. The guard is curved to conform to the feed screw or conveyer, and its inner end is flared upwardly at D to more readily allow the matical slots e so that it may be adjusted relative to the screw, and is arranged so that the feed screw when in operation, revolves toward the same, asis indicated by the arrowinFig. 2.

It is found in practice, that coarse materials, particularly crushed stone, are likely 'to' become wedged between the feed screw screw prevents any of the material becoming wedged between the guard D and the screw. The guard D supports the material in the hopper so that it is only fed therefrom by means of the feed screw, thus insuring an even positive feed.

I have illustrated and described my improved feed hopper in detail inthe form preerred by me on account of its structural convenience andeconomy. I am aware, how-- ever, that it is capable of considerable variation in structural details without departing from my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination of a hopper, the bot tom of which is curved in cross-section, hav ing a delivery opening at one end; a spiral or screw conveyer having a break in the blade thereof, at its delivery end; a vertically ad- 'ustable livery en ofsaid hopper, extending inwardly to a point above the break in the said screw or conveyer blade said shield being conformed to said screw and having its inner end flared upwardly at D a shield arranged over the inner end of said screw and curved to conform thereto; and a vertically adjustable longitudinal guard or shield toward which said screw revolves, arranged between said end guards or shields and extending inwardly from the wall of said hopper curved to conform to said screw and arranged in close proximity thereto, for the purpose specified.

2. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end a spiral or screw conveyer having a break in the blade thereof, at its delivery end; a guard or shield arranged at the delivery end of said hopper,

extending inwardly to a point above the] break in said screw or conveyer blade said shield being conformed to said screw and screw and curved' to conform thereto; and a havin its inner end flared upwardly at D; a shie d arranged over the inner end of said ard or shield arranged at the de-- lon itudinal guard or shield toward which sai screwrevolves, arranged between said end guards or shields and extending inwardly from the wall of said hopper, curved to conform to said screw and arranged in close proximity thereto, for the purpose specified.

3. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a spiral or screw conveyer having .a break in the blade thereof, at its delivery end; a guard or shield arranged at the delivery end of said hopper, extending inwardly to a point above the reak in the said. screw or conveyer blade said shield being conformed to said screw and having its inner end flared upwardly at D; and a longitudinal. guard or shield toward which said screw revolves, extending inwar'dly from the wall of said hopper, curved to conform to said screw and arranged in close proximity thereto, for the purpose specified. I

4. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a spiral or screw conveyer having a break in the blade thereof, at its delivery end; a guard or shield arranged at thedelivery end of said hopper, extending inwardly to a point above the break in the said screw or conveyer blade; a shield arranged over the inner end of said screw and curved to conform thereto; and a lon itudinal guard or shield toward which sai screw revolves, arranged between said end guards or shields and extending inwardly from the wall of said ho per, curved to conform to said screw an arranged in close proximity thereto, for the purpose specified.

5. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a spiral or screw conveyer having ,a break in the blade thereof, at its delivery end; a guard or shield arranged at the delivery end of said hopper, extending inwardly to a point above the break in the said screw or conveyer blade; and a longitudinal guard or shield toward which said screw revolves, extending inwardly from the wall of said hopper curved to conform' to said screw and arranged in close proximity thereto, for the purpose specified.

6. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a spiral or screw conveyer having a break in the. blade thereof, at its delivery end; and a vertically adjustable guard or shield arranged at the delivery end of said hopper, extendm inwardly to a point above the break in sai screw and having its inner end flared upwardly at D; for the purpose specified.

7. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening form to said screw an at one end; a s iral or screw conveyer; a guard or shield arranged at the delivery end of said hopper, said shield being conformed to said screw and havin its inner end flared upwardly at D; a shie d arranged over the inner end of said screw and curved to conform thereto; and a longitudinal guard or shield toward which said screw revolves, arranged between said end guards or shields and extending inwardly from the Wall of said hopper, curved to conarranged in close proximity thereto, for the purpose specified.

8. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a spiral or screw conveyer; a guard or shield arranged at the delivery end of said hopper, said shield being conformed to said screw and havin its inner end flared upwardly at D; and a ongitudinal' uard or shield toward which said screw revdlves, extending inwardly from the wall of said hopper, curved to conform to said screw and arranged in close proximity thereto, for the purpose specified.

9. The combination of a hopper, the bottom of which is curved in cross-section, having a delivery opening at one end; a s iral or screw conveyer; a guard or shiel arranged over the inner end of said screw and curved to conform thereto; and a longitudinal guard or shield toward which said screw revolves, arranged between said end guards or shields and extending inwardly from the wall of said ho per, curved to conform to said screw an arranged in close proximity thereto, for the purpose specified.

In witness whereof, I have hereunto set my hand and seal in the presence of two wit- IIBSSBS.

HENRY D. CONWAY. [L; s}

Witnesses: V

HAZEL MUNRO, JEssIE C. BALL.

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