US461385A

US461385A - Grain metee

Info

Publication number: US461385A
Authority: US
Publication date: 1891-10-13
Anticipated expiration: 1908-10-13

Description

3 Sheets-Sheet 2. H. E. HAWK.

l(No Model.)

GRAIN METER.

l Patented Oct. 13, 1891..

3 Sheets-Sheet 3.

(No Model.) v

H. E. HAWK. GRAIN METER.

No. 461,385. Patented Oct. 13, 1891. l H1 HHH', 11

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UNITED e STATES PATENT OEEICE.

HALE EnHAlVK, OF BUOYRUS, OHIO, ASSIGNOR OF ONE-HALF TO MEMIN J. MONNETTE, OF SAME PLACE.

GRAIN-METER.

SPECIFICATION forming part of Letters Patent No. 461,385, dated October 13, 1891. Application tiled January 14,'1891. Serial No. 377,702. (No model.)

.To all whom, t may concern: mechanism forming no part of my present in- Be it known that I, HALE E. HAWK, a citivention requires no specic mention.

zen of the United States, residing at Bucyrus, A rectangular sleeve 9 is fit-ted over the free in the county of Crawford and State of Ohio, end of the scale-beam, and is made adjusthave invented a new and useful Grain-Scale, 'able thereupon by means of a set-screw 10.

of which the following is a specification. The lower end of the sleeve is bifurcated to This invention has relation to grain-scales, l form a saddle, and in said bifurcations there and has special reference to an improvement are mounted bolts 1l, which project beyond upon the construction shown, described, and the opposite sides of the saddle and are there 1o claimed in the pending application tiled Ocprovided with anti-friction disks or rollers 12. 6o

' tober 1, 1890, and bearing Serial No. 366,744. 13 designates an L-shaped catch, the upper The objects of the present improvement are end of which is provided with an elongated to reduce to a minimum friction of the parts slot 14, through which is passed a set-screw controlling the valve, to increase the positiveinto the side of the sleeve 9.

15 ness of the operation of the valve, and, fur- 17 designates a vertically-slotted bracket 65 ther1nore,to avoid influencing the scale-beam secured by a set-screw 1S to an inverted- L- by the operation of the valve and its mechshaped lug located upon the under side of the anism and yet control said mechanism bv the front cross-bar of the frame-work. o the operation of the beam. lower end of said bracket, which is provided 2o Otherobjects and advantages of the invenwith a rearwardly-disposed perforated bear- 7o tion will appear in the following description, ing-lug 19, there is pivoted, as at 20, an upand the novel features thereof will be particuwardlyand rearwardlydisposed beveledlatchlarly pointed out in the claims. bar 21, provided near its middle with a Referring to the drawings, Figure 1 is a shoulder 22 and near its upper end or at front elevation of a grain-scale constructed in about the point of beginning of its bevel with 75 accordance with my invention. Fig. 2 is a a friction disk or roller 23, the periphery of side elevation. Fig. 3 is atop plan View. Fig. which projects beyond the face of the latch.

4 is a transverse section looking toward the Bearings 24: are located in the opposite side4 hopper and taken in front of the valve-operframes 1 immediately in front of and a slight 3o ating rock-shaft. Fig. 5 is a detail in perdistance below the valve or cut-off, as before 8o spective of the bell-crank-valve operating stated, pivotedto the opposite sides of the stirrup or bail and adjacent parts. Fig. G is chute, and in said bearings there is journaled a detail in perspective of the catch for the loosely a rock-shaft 25, provided near its opsame.. Fig. 7 is a detail in perspective of the posite ends or opposite the ends of the cut-oft' yoke and its trip, with a pair of adjustable rock-arms 26, the 85 Like numerals and letters of reference infree ends of which have pivoted thereto, as dicatelike parts in all the figures of the drawat 27, a pair of connecting` rods or straps 2S, ing-S, eccentrically pivoted, as at 29, to the oppo- In this instance I employ the opposite side site end walls of the valve or cut-off.

4o frames 1, the depending stationary chute 2, A pair of L-shaped ears 30 are secured to 9o the eccentrically-pivoted cut-off or valve 3, the front cross-bar of the frame-work, one ear having the semi-cylindrical bottom, the scalebeing located at each side of the scale-beam beam 4, terminating at its rear end in the and a slight distance therefrom, and in each yoke or bail 5, in which is hung the movable of said ears there is pivoted or fulcrumed, as

hopper 6, said beam being fulcrumed, as at at 31, a bell-crank lever 32, the front branches 95 7, upon the opposite side frames. I also emor members of which are connected bya lockploy the same mechanism for closing and ing-bar 33, nutted, as shown at 24, at each opening the valves or cut-offs in the lower side of each of the levers. The opposite or end of the movable hopper, and also in the rearbranches of the bell-cranksare connected 5o delivery-hopper S below the same, and said pivotally by bolts 34 to the sections 35 of a roo pair of connecting-rods 36. 'lhe sections mentioned are longitudinally slotted, as at 37, and through the same and the remaining members or sections of the connecting-rods are passed set-bolts 3S, so that the connecting-rods 3G may be lengthened or shortened, as may be desired. The rear ends ofthe connecting-rods are pivoted, as at 40, to the free ends of a pair of rock-arms 4l, adjustably mounted upon the rock-shaft heretofore 1nentioned. The rock-arms last mentioned are preferably considerably shorter than the rockarms previously described and connected with the cut-eff or valve, so that any oscillating movement upon the part of the short rock-arms Will be transmitted in an increased degree to the longer rock-arms, and consequently the cut-off or valve is givena greater sweep.

42 designates the bearings for the brakeshaft 43, upon which is mounted the brake disk or drum 44, the periphery of which is surrounded by the brake-strap 45, having its terminals connected one to a fixed bracket 4G and the other to a brake-lever 47, pivoted, as at 48, to said bracket and carrying a Weight 49. There is also mounted upon said shaft a ratchet-wheel 50, which is fixed to the shaft, and at one side of the same and loosely upon the shaft a bellcrank lever 5l. To one branch of the bell-crank there is pivoted, as at 52, a gravity-pawl 53, the working end of which automatically engages with the teeth of the ratchet. The opposite member of the bellcrank lever is provided with a bearing-bolt 54, upon which is loosely pivoted the lower end of the connecting-rod 55, the upper end of which is bifurcated to form a yoke 5G, which embraces and is loosely connected to the scale-beam 4 immediately in front of its bail, and there is also pivoted upon the bolt of the bell-crank a curved push-bar 5S, Which extends to and slightly beyond the front of the frame-work and immediately under the transverse locking-bar of the valve-operating bail and below its end is loosely connected by a bolt 59 to a connecting-strap GO, which aty its upper end is connected, as at l, to a depending lug G2, secured to the under side of the front bar of the framework.

The operation of my invention is as Afollows: Taking the parts in the position they are seen when the weight of the grain has eounterbalaneed the weight upon the scalebeam and the machine is in the act of discharging, after such discharge has been entirely completed the scalebeam falls and the hopper is elevated. The falling of the sealebeam causes a rocking of the valve-operating bail or stirrup by reason of the said beam coming in contact with the locking-bar of said stirrup, so that said stirrup is depressed at its front end until the beam rests upon the front cross-bar. As the bail or stirrup is tilted its locking-bar comes in contact with the front beveled face of the latch and rides over the same and the anti-friction disk, and

is maintained by the yoke of the beam some distance below the shoulder of the latch. The tilting of the stirrup serves to draw upon the connecting-rods and rock or oscillate the short rock-arms and the rock-shaft, which motion is imparted to the longer rockarms, and from them by the connecting-rods to the cut-off, which is thus oscillated so as to be withdrawn from under the chute and permit the grain to flow from said chute into the movable hopper. Then the hopper has received a suliieient quantity of grain to but slightly raise the scale-beam, the weight of the latter is removed from the lockingbar et the bail or stirrup, and the weight of the valve or cutoff drawing upon its connecting-rods serves to oscillate the rockshaft and elevate through the connectingrods described the bail or ,stirrup until the locking-bar of the latter comes against. and is engaged by the shoulder of the latch. `When the parts are in this position, the cuteff has been nearly closed and grain from the same passes into the movable hopper only by overflowing the edge of the cut-oft'. As the hopper becomes sufficiently weighted to ceunterbalance the weighted scale-beam, said scale-beam is elevated and its L-shaped trip comes in contact with the antifriction roller or disk located upon and extending from the beveled face of the latch, so that said latch is pressed to the rear, and the weight of the grain in the cutoff serves to immediately and positively close the same against any further escape ot' the grain therefrom to the hopper. After the grain has been discharged from the movable hopper and the beam descends it will be seen that said beam, through the medium of the connecting-rod loosely embracing the same, rocks the bell-crank of the brakeshaft, and as its gravity-pawl has previously engaged a tooth when said beam is raised the bell-crank, brake-shaft, and ratchet are partially rotated in unison, as is also the brakedisk, any too sudden rotation bein g prevented by the brake-strap. As the beam is elevated by the weight of the grain and the saine rises it also elevates or pushes forward its pushbar, which is thrown into the position lately occupied by the locking-bar and still occupied by the locking-bar if there be obstructions to the closing of the valve or cut-eff, such as straw and other foreign mattei', which occasionally get into the stuif being weighed. In such instances the sudden pushing of the push-bar to the front brings the front end of the same into contact with the locking-bar of the bail or stirrup, and thus forces the same up, and consequently the valve is closed.

From the above description it will be seen that, although the opening and closing of the valve is accomplished by the movements of the scale-beam, yet the latter' is not iniiuenced by the valve-controlling mechanism or the Weight of stuft contained in the valve or cut-off. It will also be seen that there are IOO IXO

4but four points of the scale-beam at which any friction vot the parts can take placenamely, at its fulcrum-points and the points of pivot of the movable hopper to the rear end of the scale-beam. Thus the friction of parts is reduced to a minimum and nothing but the 4weight of the grain itself can influence and raise the scale-beam. In this manner an eXact measurement can be obtained. It will be observed that the several parts are all adjustable, so that a proper working may be obtained. The connecting-straps between the valve-operating rock-shaft and the stirrup may be adjusted to regulate the flow of grain.

In Fig. 2 I have shown how a register may be attached to my grain-weigher. The construction of this register is of the simplest character, and as it forms no part of my invention no detailed illustration will be given. The units wheel or disk is provided with an operating-arm A, which sets the register R in motion. This arm is struck by the bracket piece B when the hopper 6 descends, so as to cause the units wheel or disk of the register to turn one degree.

The main object of the attachment of the im provexnents before noted to the scale-beam is to provide a cut-off in which the iiow can be diminished to a very small degree at the will or desire of the operator to suit the kind l of material, and all this with but a single valve.

The latch 21 takes the influence from the beam at its critical period and holds it till the beam with weights moves again before it tri s.

Ipdo not herein broadly claim the connections between the free end of the scale-beam and the cut-oft, the rod 58, and the mechanism for opening and closing the gate at the lower end of the receptacle, as such is embraced in the subject-matter of a pending application iiled by me October 1, 1890, and bearing Serial Nos. 366,744; and 351,177.

Having described my invention, what I l claim is- 1. In a grain-scale, the combination, with the frame-work, the fulcrumed scale-beam, the hopper loosely suspended therefrom, the chute, and the cut-off pivoted to the hopper, of the rock-shaft 25, journaled in the framework and provided with two opposite pairs ofv arms 2G, extending from the shaft, rods connecting the long arms with the sides of the cut-off, the pivoted bail or stirrup located in the path of and adapted to be depressed by the beam, and rods connecting the bail or stirrup with the short rock-arms, substantially asspecilied'.

3. In a grain-scale, the combination, with the frame-work, of the fulcrumed scale-beam, the loosely-suspended hopper, the chute, the cut-off, theI rock-shaft provided with the opposite pairs of rock-arms, rods connecting a pair of the arms with the endsof the cut-off, a pair of bell-cranks pivoted upon the framework at each side of the scale-beam, a bolt connecting the outer ends of the bell-cranks, and adjustable rods connecting the inner ends of the bell-cranks with the ends of the remaining pair of rock-arms, substantially as specified.

4. In a grain-scale, the combination, with the frame-work, the fulcrumed scale-beam, the chute, the valve pivoted to the side of the same, and the hopper loosely suspended from the scale-beam, of a bail or stirrup pivoted upon the frame-workand in the path of the scale-beam, a latch pivoted to the frame-work and having a shoulder located above the bail when the latter is depressed by the beam and adapted to engage said bail, a projection or roller located above the shoulder, a trip projecting from the side of the beam and adapted to strike the projection, and rods connecting the bail with the cut-olf, substantially as specified.

5. In a grain-scale, the combination, with the frame-Work, of the fulcrumed scale-beam, the cut-off, the chute to which the cut-off is pivoted, the loosely-suspended hopper, the opposite bell-cranks pivoted on opposite sides ot' the beam, rods con neeting the inner members of the bell-cranks to the cut-off, a bolt connecting the inner branches of the bell-cranks and located in the path of the scale-beam, a bracket slotted and adjustably connected to the front bar of the frame-work, a latch having an upper beveled face terminating in a cam-disk and below the same provided with a shoulder and pivoted at its lower end to the bracket, and a trip adjustably connected to the scale-beam and adapted to strike the camlug of the latch, substantially as specified.

(5. In a grain-scale, the combination, with the frame-work and a register rigidly secured thereto, said register having an operating-arm A, of the looselysuspended vertically-mov able hopper and the fulcrumed scale-beam from which said hopper is suspended, said hopper being provided with a bracket-piece B, which is normally above the plane of the operating-arm A, but when the hopper descends strikes said arm to set the register in motion.

7. In a grain-scale, the combination, with the fulcrumed scale-beam and the hopper loosely suspended therefrom, of

which discharges into the hopper, the cut-olf IOO IIO

the chute between the chute and the hopper, operating devices for the cut-off, located in the path of the scale-beam,` so as to be actuated thereby, said devices being ad justably connected with the cut-off to move the same from an open to a closed position, and a catch adj us'tahly mounted on the frame-Work and adapted to lock the operating devices for the cut-oftl during a certain period of the operation of Weighing', as set forth.

S. In a grain-scale, the combination, with the fulcrumed scale-beam and the hopper loosely suspended therefrom, of the chute which discharges into the hopper, the cut-off between the chute and the hopper, operating` devices for the cutoff, located in the path of the operating the scale-beam, so as to be actuated thereby, said devices being adj ustably connected with the cut-off to move the same from an open to a closed position, a catch adj ustably mounted on the frame-Work and adapted to lock devices for the cut-oit during a certain period of the operation of weighing, and a trip located on the scale-beam to release the catch, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

HALE E. HAWK.

Witnesses:

J. L. LEONARD, JAS. S. REAGER.