US1433500A - Head motion for concentrating tables - Google Patents

Description

E. DEISTER. HEAD MOTION FOR CONCENTRATING TABLES.

APPLICATION FILED AUG. 13. 1918.

Patented 0011; 11922.

24, 2 SHEETS-SHEET ll/l/l/E/l/TOR WITH/E8858:

ATTORNEY E. DEISTER.

HEAD MOTION FOR CONCENTRATING TABLES. APPLICATION FILED AUG. 13. I9I8.

Patented 001k. 24,

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A TTOR/VE Y 13 is adiagrammatic view illustrating the enemas on. at, eaa

EMIL DEIS'IER, 0F FORT WASZ'NE, INDIANA, AEJSTGNOR T0 IDEIfiTEIt MACHINE QUEE- PANY, 013 FORT WAYNE, INDIANA, ll. CORPORATION OF INDIANA.

HEAD MOTION FOR, GG'NCENTRAIING TABLES.

a lication filed August 13, 1918. Seria no. 249,663.

To all whom it may concern: 1

Be it known that I, EMIL Urns'rnn, residing at Fort Wayne, in the county of rrllen and State of Indiana, acitizen of the United States, have invented or discovered certain new and useful Improvements in Head lilotions for Concentrating Tables, of which i1nprovement the following is a specification.

The invention described herein relates to certain improvements in head motion for concentrating tables and has for its object a construction in which motion is transmitted from a crank or eccentric through toggles'to the table or other. object to be vibrated, said toggle members being so arranged relative to the crank or eccentric that the thrust resulting from moving the toggle members into alinement and the push of the crank or eccentric will approximately coincide in direction. The invention is herein.- after more fully described and claimed.

In the accompanying drawings forming a part of this specification, Fig. 1 is a top plan view of. a head motion embodying the improvements claimed herein, the cover of the casing being removed; Fig. 2 is a sec-- tional elevation the plane of section being indicated by the line II'-TT, F 1; Figs.

3, 4c, and 5 are "views showing the moving parts or elements in forward mid stroke, and back positions respectively; Fig. 6 is a sectional elevation of the casing, the plane of section being indicated by the linci VI VI, Fig. 1; Fig. 7 is a sectional detail view, the plane of section being indicated by the line VII- 7H, Fig. 1; Figs. 8 and 9 are respectively transverse and longitudinal. sectional views of the roller; Fig. 10 is an end elevation of the rocker arm 5 Fig. 11 is a. plan View of the toggle arm and Fig. 12 is a sideelevation of the toggle, and Fig.

operation of th'ehead motion.

In the practice of the invention, the movable members or elements of the head motion are enclosed within a suitable caslng which is provided with a removable cover 2 in order that the parts may be protected from dust and dirt,and is also adapted to form a suitable receptaclefor' oil for lubrieating the bearing portions of the movable members. Around the upper edge of the casing 1 is formed a seat for the cover the supporting element of the seat being formed by aflange 3 and below the flange is formed a second or int ardlyprojecting flange 1 which is adapted to operate as a baflie to prevent the splashing of the oil upwards onto the seat of the cover. The employ ment of this secondary baffle rendersit unnecessary to provide a packed joint between the cover and the casing to prevent the. es cape of oil. The driving shaft 5 is mounted in suitable bearings 6 formed outside of the casing and having caps 7 adapted to be secured by suitable fmeans on top of the bearings. Below each of the bearings 6 is formed a pocket 8, which is in communication with the interior of the casing and forms a receptacle for oil which can be car ried up onto the shaft 5 by means of an endless chain 9, thereby insuring the constantlubrication of the bearings of the shafts. At a oint within the casing, the shaft 5 is provided with an eccentric 10 on which is loosely mounted a roller which may be of any suitable construction, but is preferably constructed as shown in Figs. 3., 8 and mit oil between the eccentric and the shell 12. This construction ensures. a suitable lubrication of the surfaces of the roller and the eccentric which are in contact. A toggle arm 15 has one end mounted upon a pin 16 which is jeccentrically mounted in bearings 17 on the casing. This eccentric mounting of the pin affords means whereby the position of the toggle arm with reference to the rollermay be adjusted as required to vary the movement of the table as hereinafter described. In order to facilitate the rotary adjustment of the pin-16, it is'provided with an angular extension 18 at one end and set screws 19 are provided for holding the pin in adjusted. positions. The toggle arm is provided, adjacent to its .free end, with a I the opposite direction is effected 'not shown, which may be connected to the Figsf 3, 4, and 5.

' and, 26, or bearing concave seat along which the roller will roll back and forth on the rotation of the shaft 5. At a suitable point, one end of a toggle 21 is connected to the to gle arm. 15, the end of the toggle being preferably split for the reception of a fin forming the back of the arm 15. The connection of the toggle with the toggle arm is for red by a pin 23 passing through the prongs of the toggle and the fin. The opposite end of the toggle is adapted to bear and exert a thrust on the rocker arm 2 In order to facilitate the removal of either the toggle arm or the rocker arm without removing the shaft, it preferred that the 1 wer end of the toggle should be formed with an open seat 25 as shown in Figs. 2, 3, 4i, 5, and 12, such seat being adapted to bear upon a pin 26 passing through the prongs 27 at the end of the rocker arm as shown in Fig. [0. Such construction will permit of the removal of either the toggle or the rocker arm by a with drawal of the pin 16 or the pin 27 on which the rocker arm is mounted and without any disturbance of the shaft 5 and its roller. In order to guide the toggle into position on the pin 26, a rib 28 is formed on the casing or shell, the upper surface of this rib being inclined and of such a height that 'thetoggle in sliding down the same will be directed into position on the pin 26. The upper or post portion 29 of the rockerarm 24; is provided with suitable guides for a block having on one side a bearing 30 for the pin 31, the ends of said pin forming journals for beer ings on the ends of the yoke 32, adapted to be connected to the table or other object to be vibrated. It will be understood that, 2 s a general practice in the art, the move ment of the table in one direction is effected by the moving elements as hereinafter described, while the movement of the table in by a spring table or to the post or to any other moving part. i

In Figs. 3, 4, and 5, moving elements, towit: the shaft, eccentric, roller, toggle arm, toggle and rocker arm vith its post, are shown in forward, mid and rearward positions, respectively. These terms refer to the position of the post 29 forming part of the rocker, arm and the table connected thereto. In Fig. 8 the parts have been pulled to forward position by the spring and the return movements of the mechanism and the tablejare about to begin by the operation of the eccentric on the shaft 5 which rotates in the direction of the arrow 02 in hen the parts are in the positionjshown inFig's. 3, or, in" forward position, the axis ofthe shaft 5 and the axes of the pins 2 3 g points of the toggle 2 1, are'out of alinement, the axis of the pin #4! moving downward and to the right. liy reason of this movement, the rocker arm will be turned on its pin 27 not only by the action of the roller on the torn-lo arm but also bv reason of the straightening of the toggle ioint. In mid position as shown in Fig. at, the three points of the toggle are approximately in line and th further move ment of the rocker arm and post to rear position will be due to the actionv of the encentric on the toggle arm.

in the operation of a concentrating table. it (lQfillllJlG that its forward motion should be gradually accelerated, the rworsnl abrupt and the return movemci'at gradually retarded. These desirable (haractcristics are full-v carried out in the operation of the mechanism described herein.

is hereinhefore stated. the movement of the. rocker arm and post from forward posh tion, as shown in Fig. 3, tmrards the mid position, shown in Fig. 4-, is due not only to the action of the eccentric forcing down the toggle arm, but also to the movement of the center point or pin 25} of the toggle ioint into alinement with other points of the joint, and hence the movement of the rocker arm or post and table will be very rapid from forward nosition. From mid position as shown in ig. l. the movement of the rocker arm will be due principally to the action'otthe eccei'itric and to a small degree to the moven'lcnt of the enter point or pin 23 of the toggle to the right out of alinement with the other points of the toggle and hence such n'rovonient will be slower. From rear position the movement of the table and the parts of the nccluenism wil be due to the action of the spring but controlled by the eccentric and the movement of the center point or" the toggle joint ".vh'ich movements will be the reverse ol" those just des .ribcd. The prelin'iinzirv return movement will be due to the movement of the eccentric allowing the ti 0 arm to rise until mid position and thereafter an zu-- celerated movement will be peri'n ttod. duo not only to the upward movement of the eccentric but also to the movement of the center point or pin 2 of the toggle out of alinement with the other points of the joint.

It is characteristic of the inmroremont that the movement of the rocker arm is due not only to the straightening of the toggle joint but also to the action of the eccentric which action is in the same direction as regards the effect on the rocker arm as the straightening of the toggle.

The improvement described herein enibodies What is known as a toggle mechanism,

other ooints b moi in the knuckle or )in 7 a e l 23 in the arc of a circleha'ring the axis oi? the pin 16 as its center. It is a further characteristic oi. the improvement that the toggle member formed by the arm 15 and the eccentric is in fact an extensible member, the length of such member being increased and decreased on the rotation of the shaftby an amount double the eccentricity of the eccentric 10, will beclearly seen by reference to Fig. 13.

In the construction shown in Patent No. 1,088,682, granted March 3, 1914i, to W. F. Deister, motion is transmitted from the lever 5 to the bell crank lever by a Wiping or sliding movement of theblock 8 on the roller 9; in other, words, the bearing of the block on the roller is very narrow, being theoretically a line, and practical op eration has shown that flat spots are soon formed on the roller and the apex of the block is worn away. In the construction shown and described herein motion is transmitted from arm to the rocker arm 9A by a toggle member 21 provided at its ends with seats or hearings for the pins 23 and 26, said seats having widths substantially equal to halt the perimeter of the pins. Continuous use for many. months has shown there is no material Wearing away of the surfaces of the pins and toggle member,

I claim herein myinvention:

1. In a head motion for concentrating tables the combination of an open topped case, a shaft having an eccentricportion, on which is a loosely mounted roller, suitable bearingsytfor the shaft on the case, a toggle arm having one end pivotally supported within the shell and at one side oi. the shaft and having its othcrend curved to receive the roller on the eccentric, a rocker arm having a pivotal support on the opposite side of the shaft, said arms being so arranged that their free ends overlap below the eccentric portion of the shaft and a toggle having pivotal bearingson the overlapping arms.

2. A mechanism for reciprocating concentrating tables, etc., having in combination a pivotally mountedmember adapted to be connected to the table or other object, an eccentric, a toggle mechanism interposed be tween the eccentric and the pivoted mechanism, the several parts being so arranged relative to one another that the knuckles of the toggle mechanism may 2 move into and out of alinement with the axes of the eccentrio and the oint of bearingof the to nie on the pivoted member.

3. A head motion for impartinga reciprocatory movement to concentrating tables,

etc, having in combination an eccentric, two arms pivotally mounted on opposite SlClBSOf theeccentric, the tree ends of the arms overlapping on one side of the eccentric, a toggle interposed between and having pivotal bearings on the arms, said members being so arranged that the pivotal points of the toggle will be caused to move into and out or? alinement witheach other and the axis of the eccentric on the movement of one of the arms by the eccentric,

t. In ahead motion for concentrating tables the combination of an open topped case, a shaft having an eccentric portion on which. isa loosely mounted roller, suitable bearings for the shaft on the case,a toggle arm having one end pivotally supported Within the case and at one side of the shaftand having its other end curved to receive the roller on the eccentric, a rocker arm having a pivotal support on the opposite side of the shaft, said arms being so arranged that their free ends overlap below the eccentric portion of the shaft and a toggle having pivotal hearings on the overlap ping arms.

5. A head motion for inparting a reciprocatory movement to concentrating tables, etc, having in combination an eccentric, two arms pivotally mounted on opposite sides of the eccentric, the free ends of the arms overlapping and provided with pins projecting laterally :l'rom the arms, a toggle interposed between the pins on the respective arms, and having hearings on said pins approximately equal to half the peripheries of the pins, said members being so arranged that the points of bearing of the toggle on the respective pins will be caused to move into and out of. aline'ment with each other and the axis of the eccentric on the movement of one of the arms bythe eccentric."

6. A mechanism for reciprocating concentrating tables, etc., having in combination a pivotally mounted member adapted to be connected to the table or other object, an eccentric, a toggle mechanism interposed be tween the eccentric and the pivotal mechanism, the several parts being so arranged relative to one another that the knuckles oil the toggle mechanism may move into and out of alinemcnt with the axes of the eccentric and the point of bearing of the toggle on the pivotal member, an open topped case or shell for the reception of said mechanism, the sides of the case extending to such aheight that the bearingsot the several devices Will be below the upper edges of the case or shell lllli and 1- removable cover for the case or shell. hearings for said shaft, and :1 removable 10 7. A mechanism for ii'eciprocat-l'ng concover tor the case or $1101].

centrating tables, etc., having in coinbina- In testimony whereof I have hereunto .Wl tion a shaft, an eccentric mounted on the my hand. 5 shaft, arms piv'otally mounted on opposite EMU sides of the eccentric having their free ends 1 overlapping, a toggle having pivotal bean Vitnesses: ings 0n the respective arms, an open topped RALPH L. Fnixerii-zs,

case or shell enclosing said parts and having SYNA IIANSER.

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