US303407A - Means for cleaning sieves or bolting-cloths - Google Patents

Description

(No Model.)

0. s. WENGER. MEANS FOR CLEANING SIEVES 0R BOLTING GLOTHS. No. 303,407. Patented Aug. 12, 1884.

N PEYERS. Phmn-Lflhuguphun Washinglun. nv c.

Units CLAYTON S. WENGER, OF WEST EARL, PENN SYLVANIA] MEANS FOR CLEANING SIEVES OR BOLTlNG-CLOTHS.

SPECIFICATION forming part of Letters Patent No. 303,407, dated August 12, 1884.

Application filed November 30 1883. (No model.)

My invention relates to improvements in the means for cleaning sieves or boltingclothssuch as are used in flour-bolting machines, middlings-purifiers, and the like-in which light chains attached to a movable bar act in connection with the sieve; and the object of my invention is to thoroughly clean the sieve without jarring it or pounding against it. This object I accomplish in a very simple manner by the mechanism illustrated in the accompanying drawings, in which- Figure l is a top view of a sieve with my device attached, the mechanism actuating the same being removed above the line y g of Fig. 2. Fig. 2 is a section through the sieve on the line 00 x, and shows a front view of the manner in which power is applied to the reciprocating rod; and Fig. 3 is a longitudinal vertical section through c o of Fig. 1.

Similar letters refer to similar parts th roughout the several views.

The sieve-frame A is provided with longitudinal and transverse braces a, which serve to keep it in shape and the cloth D'tightly stretched. In the frame I have been using these braces are set in the upper part of the frame, and the transverse braces are raised above the sieve; but my device will apply equally well to a frame in which the braces are placed beneath the sieve.

At the head of the sieve I have placed a horizontal rod, 13, to which are attached followingchains 0, somewhat larger than a large-linked watch-chain, which lie loosely upon the cloth, the only place at which they are fastened being to the rod B, as mentioned. The rod B moves slowly'back and forth a sufficient distance each way to carry every chain from side to side of its compartment. This movement of the rod is so slow that each -movement of its head.

reciprocating it in the usual manner.

chain, by reason of its own weight, follows the WVhen the rod reaches the limit of its movement in either direction, it remains stationary for a short time before reversing its motion, allowing time for the chains to straighten themselves before beginning to return.

As I have said, my device can be used with a sieve in which the braces are put below the cloth by usingthe device arranged as herein described, or by lengthening the movement of the rod and employing only one chain. Instead of a ehain,'a long spiral spring may be used, or, in fact, anything else which will be sufficiently pliable to rest its whole length upon the cloth.

In order to give the required movement to the rod 13, I employ the following-described mechanism: A driving-shaft, S, is actuated by means of a band-wheel, E. This drivingshaft has attached to it a worm, w, which gives motion to the cog-wheel w. The cogwheel, by means of a crank-pin, 19, operates the crank F, which againactuates the lever L, connected with the horizontal rod B. The opening m, through which the crank is connected with the pin, is a horizontal slot, which prevents the pin from moving the crank back or forth for a few moments as it passes the center on either side of the axle of the cog-wheel. The lever L passes through a slot, 9, in the rod B sufficiently long to allow of the oscillating of the lever. The ends of the rod rest in and move through openings in the sides of the box N inclosing the sieve.

' The sieve has the inclination from the head to the foot, and-suitable means for shaking or The upper end of the following-chainslbeing attached to the horizontal rod B, the lower ends, by means of the motion of the sieveand their own gravity, follow the movement of the upper ends attached to the rod, but follow somewhat behind the heads, so that when the to this manner of moving the rod 13, as there are other Well-known means by which it can can be done; but

What I do claim as new, and desire to secure 5 by Letters Patent, is-

1. lhe combination, with a shaking sieve, of a reciprocating rod, and the followingchains attached thereto, substantially as herein specified.

2. The combination, with a shaking sieve, 10 of a reciprocating rod having an intermission between the movements back and forth, and the following-chains attached thereto, as herein specified.

CLAYTON S. WVENGER. Witnesses:

H. CARPENTER, WVM. R. GERHART.

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