US602341A

US602341A - Hisee

Info

Publication number: US602341A
Authority: US
Publication date: 1898-04-12
Anticipated expiration: 1915-04-12

Description

(No Model.) 4 Sheets-Sheet 1. G. 'H. LOUTZENHISER.

OSGILLATING SIEVE 0R BOLTING MACHINE. No. 602,341. Patented Apr. 12,1898.

[ L s a E s 1 L I 1 I l \i Ja ld i s w mm W -H Z M 4 Sheets-Sheet 2.

0. H. LOUTZE NHISER. OSUILLATING SIEVE OR BOLTING, MACHINE. No. 602,341.

(No Model.)

(No Model.) 4 SheetsSheet 34 G. H. LOUTZENHISER. OSGILLATING SIBVE OR BOLTING MACHINE.

No. 602,341. Patented Apr. 12,1898.

(No Model.) Y 4 Sheets-Sheet 4.

. 0.1-1. LOUTZENHISER. Y OSGILLATING SIEVB 0R BOLTING MACHINE. No. 602.341. Patented Apr. 12,1898.

26 26 A; wag? FIG/.8.

NITED STATES CHARLES H. LOUTZENHISER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WALTER GRISCOM AND THOMAS MOFEELY, OF SAME PLACE.

OSCILLATING SIEVE on BOLTING-MACHINE.

SPECIFICATION forming part of Letters Patent N0.'602,341, dated April 12, 1898. Application filed March 13, 1897. Serial No. 628,190. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. LOUTZEN- HISER, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Oscillating Sieves or Bolting-Machines, of which the following is a specification.

My invention consists of certain improvements in oscillating or gyrating bolting-machines, the objects of my invention being to simplify the driving mechanism of the machine; to so mount and drive the sieve boxes or casings as to provide an effective counterbalance; to cut off any desired part of either sievethat is to say, to separate the discharge from one part from thatfrom another part of the sieve; to provide for variation in the angle of the sieves, and to permit of the introduction of material to a lower sieve of the series without passing the same through the upper sieves or the discharge of material from an upper sieve or sieves without passing through the lower sieve or sieves. These objects I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which Figure 1 is a plan view of an oscillating or gyratin g sieve or bolting-machine constructed in accordance with my invention. Fig. 2 is a view looking at the inner side of one of the sieve-boxes. Fig. 8 is a view, partly in side elevation and partly in section, on the line 1 y, Fig. 1. Fig. 4 is an end view of the machine. Fig. 5 is a section on the line w w, Fig. 3. Fig. 6 is an enlarged view of part of the machine. Fig. 7 is a view illustrating a modification. Fig. 8 is an enlarged detail View.

The various posts or bars of the fixed framework of the machine are represented at 1, and to upright posts at each end of the 7 machine are secured brackets 2, carrying the bearings for the longitudinal driving-shaft 3, which has a pulley 4: for receiving a belt 5, running to any available adjacent driving-pulley.

At each end of the shaft 3 is abeVel-wheel 6, which meshes with a bevel-pinion 7 on an upright shaft 9, mounted in bearings upon cross-bars 10, carried by the end posts lot the fixed framework. Each of these shafts 9 has oppositely-set crank-pins, which are adapted to boxes on

brackets

11 and 12, the brackets 11 carrying a longitudinal bar 13, secured to a sieve-box 14, while the brackets 12 carry a longitudinal bar 15, secured to another sieve-box 16, parallel with and along side of the box 14:, it being understood that the correspondingly-set crank-pins of each shaft are secured to the same box, so that as the shafts 9 are rotated a gyrating movement will be imparted to each of the sieve-boxes, the movement of one box being the exact opposite of thatof the other box, so that the boxes serve to counterbalance each other and thereby lessen or prevent vibration.

- It will be observed on reference to Figs. 4 and 5 that the correspondingly-set cranks are respectively an upper crank of the pair at one end of the machine and a lower crank of the pair at the opposite end of the machine. Hence the bars 13 and 15 are inclined in respect to the horizontal, as shown in Fig. 2, thereby servingto stiifen and brace each of the boxes against lateral twisting or tilting strain in a much more effective manner than they could if they extended horizontally from one end of the box to the other.

Each box is supported upon three struts 17, which are adapted at their opposite ends, re-

spectively, to sockets 19 on the under sidesof the boxes and to sockets 20 on the basebars of the fixed frame, the three struts occupying the angles of a triangle, as shown by dotted lines in Fig. 1, the central strut being under the inner portion of each box and the outer struts being under the outer portion of the same. By this means the support is evenly distributed throughout each box with the employment of a less number of supporting devices than are usually required. A limited number of struts can thus be employed, because the boxes are supported in a measure at each of the inner corners by the brackets with which the driving devices engage.

The use of the longitudinal bars 13 and 15 is of advantage, as said bars can be applied to the brackets and the running of the machine adjusted and regulated before the sieveboxes are applied.

At the end which receives the stock to be bolted or separated each of the sieve-boxes is stepped, as shown in Figs. 2 and 3, so that the stock which is delivered to the lower sieve or set of sieves in the box does not have to pass through the upper sieve or set of sieves, and in like manner each box is stepped at the discharge end, so that while sieves of the same length are used in both the upper and lower sets said sieves are offset or overlapped. Hence the feed to the lower sieve or sieves and the discharge from the upper sieve or sieves are not obstructed by intervening sieves.

In the presentinstance I have shown a sieve system comprising three sieves, two sieves'2l and 22 in the upper portion of each box and one sieve 23 in the lower portion, the

upper sieves

21 and 22 receiving their supply of stock from a spout or spouts 21 at the topof the machine and the lower sieve receiving its supply from a spout 23 on the step 24 at the end of the machine. Each sieve has beneath it a pan 25, which directs the material passing through the sieve onto the upper end of the sieve below, and with each sieve is combined an adjustable cut-off, which, as shown in Fig. 3, consists of an apron 26, located between the sieve and the pan and passing around a roller 27 just inside of the discharge end of the sieve, the free ends of each apron having transverse bars 28, which are connected by cords 29 to a drum 30, passing transversely through the box and having on the outside of the same a handle 31 or equivalent means whereby it may be turned. The transverse bar at the end of the lower run of each apron is guided in grooves or ways 28, formed in the opposite sides of the sieve-casing, and said lower run of the apron follows the general angle of the pan beneath the sieve, so that any material falling onto the upper side of said lower run of the apron is directed onto said pan. By this means the upper run of the cut-off apron may be caused to extend more or less inward from the discharge end of the sieve beneath which it is located, and hence the area of said sieve which discharges into the pan beneath may be increased or diminished in accordance with the character of the stock which is being acted upon, the material which passes through the sieve and falls upon the upper run of the apron being delivered by the latter through a spout adjoining the tailings-spout for said sieve. If the roller 27 is a spring-roller upon which the apron is wound, the lower run of the apron and the lower cord 29 will be unnecessary.

In Fig. 7 I have shown a modified form of cut-off, consisting of an apron secured at each end and passing over a transverse bar 40, guided in ways 41 in the sides of the sieveeasin g and movable back and forth by means of a winding-drum 42 and cord 43 and pulley 44, the top of this bar being some distance above the ends of the apron, so that the latter slopes in opposite directions from the bar. By moving the bar to and fro, therefore, the apex of the angle of the apron can be changed and a variable separation of the discharge from the sieve can be effected, as before.

The lower end bar 32 of each screen is supported upon a shoe 33, which rests upon an eccentric 34, carried by a spindle 34, which passes through the sieve-box at the tailings end of the same and has a handle 35, whereby the spindle and its eccentric may be turned so as to raise or lower the lower end of either sieve, and thereby vary the angle of the same to suit the character of the stock which is being acted upon, the spindle being squared or otherwise formed so that the handle can slide thereon, whereby a thumb-nut 36 upon the outer end of the eccentric-spindle can press the handle against the end of the casing and thus secure the eccentric in position after each adjustment. The stepping of the casing at the discharge end of the same besides providing for a free discharge from the upper sieve or sieves also permits ready access to the adjusting devices for the lower sieve or sieves.

It will be observed that there is a practically rigid connection between each end of each box and the crank-pin which operates it. Hence there is no opportunity for derangement due to loose connections or to wear or loose fit of movable connecting parts, the boxes and their brackets practically forming rigid connections between the opposite crankpins, so that smoothness and uniformity of movement are assured.

Having thus described my invention, I claim and desire to secure by Letters Patent- 1. The combination in an oscillating sieve or bolting-machine, of a pair of sieve-boxes located side by side, upright shafts at the ends of the boxes, each having oppositely-set crank-pins, and brackets projecting from the opposite ends of the sieve-boxes and engaging said crank-pins, an upper crank of one shaft and a lower correspondingly-set crank of the other shaft being connected to each box, substantially as specified.

2. The combination of a bolting-sieve with an adjustable cut-off consisting of an apron located beneath the sieve and passing around a bearing adjacent to the discharge end of the same, the opposite ends of said apron being connected by cords to a winding-drum in advance of the apron, whereby on turning said drum the apron may be positively moved in either direction, substantially as specified.

3. The combination of a bolting-sieve with an adjustable cut-oft consisting of an apron located beneath said sieve and passing around a bearing adjacent to the discharge end of the same, a winding-drum located in advance of the apron, cords wound upon said drum and connected to the opposite ends of the apron, and inclined guides for the end of the lower run of the apron, whereby said lower run is directed at an angle the reverse of that of the upper run, substantially as specified.

4. The combination of the sieve-frame of a bolting-machine, with an eccentric serving as a support for the lower end of said frame, an

eccentric-spindle passing through the sievecasing and having outside the same a sliding handle whereby it may be turned, and a nut mounted on said spindle beyond the handle, substantially as specified.

5. The combination in an oscillating sieve or bolting-machine, of a pair of upright crankshafts, brackets having boxes receiving the cranks of said shafts, a longitudinal bar car-