US681254A - Gyrator. - Google Patents

Description

No. 631,254. Patented Aug. 27, Ism.

Aw. P. NonTHwAY.

GVRATOH.

(Application filed Jan. 28, 1901.) (No Model.) 3 Sheets-Sheet I.

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ma Nanms Evans co.. Puma No. 68|,254. Patented Aug. 27, I90l.

W. P. NDRTHWAY.

GYBATOR.

(Applicatxon-led `Jan. 28, 1901.)

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(Application filed Jan. 28, 1901.)

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PATENT EETCE.

WVINSLOYV 1). NORTHVAY, OF` MINNEAPOLIS, MINNESOTA.

GYRATO R.

SPECIFICATION forming part of Letters :Patent No. 681,254, dated August 2'?, 1901.

` Application filed January 28,1901. serial 110.44.988. (Numana To all whom it may concern:

tors, of which the following-is a specification.

My invention relates to devices for imparting a whirling or gyratory motion to bodies i ro and to devices for guiding and restraining the movements of all portions of the body to circular courses of the same diameter; and its l" principal objects are to provide improved U rn'eans for gyrating and guiding chop-graders and like separating and grading machines and by supporting the gyrating body directly upon the devices that guide'i'ts movement to p dispense with the hangers and similar devices lao usually employed in gyrating machines. Stated brieflyand i generally, the machine comprises a main supporting-frame, a superposed box or body, together with mechanism engaging it` centrally to gyrate it, and intermediate guides and slides arranged and adapted to operate in pairs at right angles to p each other for controlling the gyratory movements of the extremities of the box or body.

` H p More specifically stated, the machine as a whole may be considered as made up of three principal partsviz.`, the gyrated body, the

" base or frame adapted to support the operative parts, and an intermediate sliding and p guiding frame composed either of a single l ss ,p Ways at the `four corners and resting on balls base-frame.

casting or of 'several parts secured together, provided with upper and lower grooved guideor rollers in guides on the four corners of the frame are at right angles to those on the baseframe which support it and are also provided `With balls or rollers on which "the gyrated imparts motion to that part in direction at a `right angle to the direction 4of movement of the bodyupon it,.because the sliding frame rests only on'the balls or rollers in the guides on the main frame, which are at right angles The guides at the four corners on the upper surface of the intermediate to those on the upper surface of the sliding frame on which the gyrated body. moves. This compound motion controls the gyratory mot-ion given to the box, so that every portion of the gyrated box will be restrained to circular motion of exactly the same extent and ydirection as that imparted to it at its center.

In the accompanying drawings, Figure 1 is a side elevation of a machine embodying my improvements. Fig. 2 is an end elevation of the same. Fig. 3 is a sectional elevation of the journal-box for the crank-pin which imparts motion to the chop-grader. Fig. 4: is a plan viewof the same, the cap-plate having been removed.- Fig. 5 is a plan view illus- `tratin g diagrammatically the gyratory movements of the machine. Fig. Gis a side elevation showing portions of the base-frame, the box, and the intermediate sliding and guiding frame separated from one another. Fig. 7 is a plan view of the sliding and guiding frame, and Fig. 8 is an end elevation of the same in position on the supporting-frame.4

In the drawings the main frame is shown as consisting of posts l and bars 2, connecting them. Bridge- trees 3 and 4 are provided4 for the support of a driving-shaft 5 and a vertical shaft 6, the shafts being operatively connected by beveled gears '7. The shaft 5 may be driven by a pulley 8 and belt 9, and the spindle 6 is stepped in a suitable box on the bridge-tree 3 and has an upper bearing in a journal-box 10, mounted on the bridge-tree /1. On the upper end of the spindle l6 is a pin or projection 11, extending upward parallel with, but located eccentrically to, the axis of the spindle for engaging the base 12 of the box orbody 13 to give it a gyratory motion. To provide a suitable bearing for the pin, a tubular box 14, having fianges 15, is secured Jin an opening in the base 12 by bolts 16, extendingthrough the base and lianges l5. In the box 1-1 are upper and lower rings 17 and an intermediate ring 18, forming races for balls 19, with which the crank-pin 11 contacts. These rings are loose, and the spaces 2O at their sides permit them to be easily engaged for the purpose ofremoval or adjustment. A cap 21 is used for covering the box to exclude dirt, and set-screws 22, inserted through the cap, serve to prevent upward movement of the rings when the pin. is re- IOO volved. The step-box and the journal-box l0 for the spindle 6 should also be provided with suitable ball-bearings.

The whirling or gyratory movement given the box by the crank-pin at its center is restrained and controlled as to the sides and ends of the box to cause all portions of the boxto describe the same circular movement by means of a sliding frame composed of guides and slides arranged and operating between the gyrating box and the main supporting-frame. `This sliding frame is mounted on stationary guides 23, arranged upon and secured to the bars 2 of the machine-V frame. The guides 23 are preferably supported by adjusting-screws 24 and have pendent flanges 25, that overlap the sides of the cross-pieces 2 of the frame. The screws 24e enable the guides to be vertically adjusted for leveling the machine, and the flanges 25 prevent lateral displacement. The sliding frame intermediate the guides 23 and the gyrating box, which is operated by the box and slides on the guides 23, comprises bars 26, extending transversely, and bars 30, extending longitudinally of the machine-frame, the latter bars being secured on the former by bolts 31 or otherwise. The bars 26 and 30 thus constitute a frame, the lower bars 26 of which are arranged to slide on the guides 23 and the upper bars 30 of which support the box and provide guides in which it may reciprocate in directions at right angles to the direction of movement of the sliding frame on the guides 23.

In the end portions of the bars 26 and 30 and in the guides 23 are inserted ways or races 27 for balls or rollers 28. Guides 32 are secured by bolts or otherwise to the under surfaces of the box-corn ers, and these guides, as are also the guides 23, are provided with ways 27 for balls 28. The end portions of the bars 26 have downward flanges 29, overlappingthe sides of the guides 23, to prevent lateral displacement during the operation of the machine, and the slides 32 have similar iianges 29, overlapping the sides of the bars 30, for the same purpose.

A suitable counterbalauce-wheel 34 is secured on the spindle 6, as near as practicable to the bottom of the box 13.

In operation the rotation of the spindle 6 will cause the crank-pin Il to impart to the central portion of the box 13 a circular or gyratory motion, and its four corners will be restricted to si milar movements by the guides. This is illustrated by the diagram, Fig. 5, in which the box and crank-pin are arbitrarily shown in initial positions by full lines a, and their opposite extremes of movement are indicated by dotted lines b, c, and d. As the intermediate frame, composed of the bars 26 and 30, in operation slides on the guides 23 and as at the same time the guides 32 on thebox-bottom slide on the frame at right angles to its movements in the guides 23, it is obvious that the sides and ends of the box must at allutimes during the travel of the crank-pin maintain positions on lines parallel with the lines of their initial positions, and

`as, their distance from the pin is vinvariable it follows that the extent and direction "of the movements of the box as a whole must correspond with the throw of the crank-pin. This intermediate sliding and guiding frame and the means for operatively connecting it with the gyrator and base-frame may be varied considerably in structure without affecting their mode of operation, and therefore I do not limit my claim to the specific form and structure of the devices shown and described.

In illustrating the means for producing and controlling the gyratory motion I have not deemed it necessary to show in connection therewith anything more than a mere outlinev of a box or body 13, for while the improvements were designed primarily for operating the class of flour-mill machines termed chopgraders I do not wish to confine their use to that or any particular class of machines.

Having described my invention, what I claim is- 1. The combination with a supporting base or frame, and a superposed gyrating body, of an intermediate slide supporting the latter on the former, and guides therefor extending in directions at right angles to each other on the gyrator and base, substantially as set forth.

2. The combination with a supporting base or frame, and a superposed gyrating body', of centrally located means for gyrating the body, guides arranged at right angles to each other, and a slide operated therein by the gyrating body for controlling the movements of such body, substantially as set forth.l

3. The combination with a supporting base or frame, and a su perposed gyrating body,the former having guides on its upper surface and the latter having guides at its under surface at right angles to the guides on the base, of an intermediate slide engaging said guides, for the purpose set forth.

4. 'The combination with a gyrating body" having guides at its under surface, of a slide engaging said guides and supported on other' guides extending at right angles to the former guides, substantially as set forth.

5. The combination with a gyrating body having guides at its under surface, and underlying independent guides extending at right angles thereto, of an intermediate slide operated by the gyrating body and operatively engaging such guides, substantially as set forth.

6. The combination with a gyrating body having guides at its under surface, and 11nderlying independent guides extending at .right angles thereto, of an intermediate slide operated by the gyrating body and operatively engaging such guides, and ball or roller bearings for said slide in said guides, sub-4 stantially as set forth.

'7. The combination with a gyratory body n having guideways at its under surface, of a supporting frame, gnideways thereon arranged at `right angles to the said guideways, intermediate slides secured together at right `angles to one another, and ball-bearings between said slides and guideways, and a shaft and crank-pin for imparting gyratory motion to said body, substantially as set forth.

8. In a gyrator, a supporting base or frame,

a gyratory body and means for gyrating it, a.

slide intermediate the base and gyratory body and supporting the latter on the former, and

\ straight-line guides on said base and body e is engaged by said slide, the guides on the base extending at angles to those on said body,

n substantially as set forth.

WINSLOW P. NORTHW'AY..

In presence of P. H. GUNOKEL, A. L. WHELAN.

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