US447354A - richards - Google Patents

Description

(No Model.) 11 Sheets-Sheet 1. P. H. RICHARDS. REGULATOR GRAIN WEIGHER.

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4 11 SheetsSheet 2. P. H. RICHARDS.

REGULATOR GRAIN WEIGHER.

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(No Model.) 11 Sheets-Sheet 3.

F. H. RICHARDS.

REGULATOR GRAIN WEIGHER.

No. 447,354. Patented Mair. 8,1891.

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11 Sheets--Sheet 4 (No Model.)

I. H. RICHARDS.

REGULATOR GRAIN WEIGHER.

No. 447,354. Patented Mar. 3,1891.

11 Sheets-Sheet 5.

(No Model.)

I. H. RICHARDS. REGULATOR GRAIN WBIGHER.

No. 447,354. Patented Mar. 3,1891,

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(No Model.)

P. H. RICHARDS. REGULATOR GRAIN WEIGHER.

No. 447,354. Patented Mar. 3, 1-891.

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(No Model.) 11 Sheets-Sheet 7.

P. H. RICHARDS. REGULATOR GRAIN WEIGHER.

No. 447,354. Patented Mar. 3,1891.

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(No Model.) 11 Sheets-Sheet 8.

P. H. RICHARDS. REGULATOR GRAIN WEIGHBR.

No. 447,354. Patented Mar. 3,1891.

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F. H. RICHARDS. REGULATOR GRAIN WBIGHER.

No. 447,354. Patented Mar. 3,1891.

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11 Sheets Sheet 10. F. H. RICHARDS.

Patented Mar. 3,1891.

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REGULATOR GRAIN WEIGHER.

11 Sheets-Sheet 11.

(No Model.)v

F. H. RICHARDS.

REGULATOR GRAIN WEIGHER.

No. 447,354. Patented Mar. 3,1891.

UNITED STATES PATENT OEEIcE.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE PRATT d: IVHITNEY COMPANY, OF SAME PLACE.

REGULATOR GRAIN-WEIGHER.

SPECIFICATION forming part of Letters Patent No. 447,354, dated March 3, 1891. Application filed Se te ber 10, 1890. Serial No- 364=,574. (No model.)

To all whom, it may concern.-

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Regulator Grain- Neighers, of which the following is a specification.

This invention relates to regulator grainweighers, and has for its principal object to provide improved bucket mechanism and regulator mechanism, whereby the grain is properly handled and the operation of the machine reliably controlled.

My present improvements are more especially designed for use in grain-weighers of relatively large size.

In the drawings accompanying and forming a part of this specification, Figure 1 is a right-hand side elevation of a grain-weigher embodying my present improvements. 2 is a front elevation of the machine shown in Fig. 1. Fig. 3 is a plan view of the supply-chute and the details carried thereon. Fig. at is a plan view of the bucket-latch, showing certain details operating in connection therewith, and showing a portion of the grain-bucket and of the frame-work in section. Fig. 5 is a plan view of the bucketstop, a portion of the bucket carrying said stop being shown in section. Fig. (3 is a vertical section as seen from the right hand in Fig. 2, and illustrates one step in the opera tion of the machine. Figs. '7, 8, 0, 10, 11, 12, and 13 are sectional views similar to Fig. 6, showing successive steps of the operation of the machine, including the action of the regulator apparatus.

Similar characters designate like parts in all the figures.

In the class of grain-weighers to which my present improvements belongit has been customary to make the regulator-hopperP (when this type or class of regulator was used) of a size holding more than one complete load of grain, as shown, for instance, in the Letters Patent No. 412,724., granted December 10, 1890, to C. H. Cooley and F. H. Richards, wherein said hopper is shown having said relatively large capacity. By means of my present improvements, however, it is made Fig.

practicable to use a regulator or regulatorhopper, as herein shown, of much less capacity than one compartment of the grain-bucket. This object is attained by means of certain features of my present improvements, hereinafter set forth, whereby the premature discharge of the grain-bucket is under certain conditions prevented.

The machine shown in the drawings consists of a suitable frame-work carrying the supply-chute thereon, the scale-beam and its counterpoise, valve mechanism for cutting off the supply of grain, the grain-bucket mech anism, and the regulator mechanism. Some of these features of the machine are taken from and are described in prior Letters Patent, as follows:

The frame-work for carrying the operative parts of this machine usually, and as shown in the drawings, comprises two suitable side frames or uprights, as 2 and at, which may be held together by the top plate 5 (carrying the supply-chute H) and by the bottom plate or bar 3, (herein shown formed integral with the side frames,) or the side frames may be separate and held together by suitable tie rods or braces, as shown in the prior Letters Patent No. 403,988, granted to C. H. Cooley May 28, 1889.

The scale-beam B consists of a central shaft 50, two bucketsupporting arms 19 and 21, provided at their outer ends with the usual knife- edges 15 and 17, on which to suspend the hangers, a weight-supporting arm 28, oppositely disposed on said shaft relatively to said arms 19 and 21, and having a suitable knife-edge 27 on which to suspend the main weight, and bearings which are adapted to rest on the beam-supporting knife-edges 2i and 20, that are carried by the frame-work. This feature of my present machine is also described and is claimed in the Letters Patent No. 440,740, granted November 18, 1890, to C. H. Cooley and F. H. Richards.

For counterbalancing the bucket mechanism and its load of grain we employ the improved weight shown in the Letters Patent No. $2,860, granted December 16, 1890, to C. H. Cooley and F. H. Richards, in which the main weight W of a mass balancing the unloaded bucket mechanism is suspended from the arm 28 of the scale-beam by the rod 32.

A circular cover 104 is fixed to the top of the main weight, and on this cover rest the sevequal in weight the load of grain. The cylindrical cover 105 is fitted to slide up and down on the suspension-rod, and is preferably formed conical at top, as shown, for the purpose of shedding grain-dust, &c., falling thereon.

The stop shown herein for limiting the vertical movements of the counter-weight is of the type shown and described in the Letters Patent No. 442,720, granted to F. H. Richards December 16, 1890, to which reference may be had for a more particular description thereof.

In the drawings are shown the bracket 108, the rod 32, and the sleeve 121, fixed to said rod by the key 119, said sleeve having the upper stop-collar 122 and the lower stop-collar 123 formed thereon, as shown in said Letters Patent No. 442,720.

The valve mechanism forreducing and for cutting off the flow of grain to the bucket is actuated from and by the scale-beam. The reducing-valve is carried by the arms 62 and 64, which are supported on the pivots 61, said valve being furnished with a suitable stop to limit its closing movement. Said valve closes under the outlet 65 of the chute H somewhat more than half the width thereof, and is actuated by the valve-lever 69 from the valve-actuating arm 71 of the beam B. The construction and mode of operation of this reducing-valve in its preferred form are fully set forth in the aforesaid Letters Patent No. 442,724, to which reference may be had. Other Well-known kinds or forms of grain-weigher valves may, however, be substituted for said preferred form thereof.

The cut-off valve is carried by the arms 72 and 74, pivoted at 73 to the supply-chute H. The arm 72 is continued above the pivot 73 and carries the cam 68 and some suitable.

weight, as 90. The shiftable actuator 55, which in this case is a small roller carried by the arm 54,is carried at anormally-fixed point on and relative to the beam-arm 19, as shown in Fig. 1. This feature of a shiftable actuator is described and claimed in Letters Patent No. 442,712, granted tome December 16, 1890, and the construction thereof herein shown is further described and claimed in Letters Patent, No. 442,719, granted to me December 16, 1890. The cam, 68 being above the pivot 73 of the cut-off valve and the valvearm being of a short radius, the cam follows the beam in its downward movement, and thus has a more direct and effective action thereon. This arrangement and combination of the several parts permits the use of a valve having a large angular movement relatively to the beam movement, thereby obtaining a long stroke for the weight 90, that is on the arm of the cut-off valve.

For a more particular description of the operation of the cam-arm on the beam subsequent to the poising, whereby the weight of said arm is thrown upon the beam for a special purpose, reference is made to the Letters Patent No. 442,722, granted to O. H. Cooley December 16, 1890. In said Letters Patent No. 442,722 a combination is described wherein the force thus thrown upon the beam subsequent to the poising is used, as it is in my present improvements, for disengaging bucketcatches 41 for discharging the grain-bucket.

As in said Letters Patent No. 442,722, so also in my present improvements, said cam-arm may be separate from the cut-0E valve; but

it is deemed preferable that said arm should be fixed on the valve, since by this means the weight of the valve is utilized for overweighting the beam and the cam is utilized for operating the valve.

That feature of the valve mechanism which comprises the resistance-arm, herein designated by 79, is described and claimed in the Letters Patent No. 443,569, granted to O. H. Cooley December 30, 1890, to which reference may be had for a further description thereof. In that application said arm is designated by the numeral 77.

The grain-bucket G is of the well-known double-chambered class, similar to the bucket described in the aforesaid Letters Patent No. 442,724, excepting that in the present instance the bucket-pivots 12 are located close to the lower end of the bucket, so that the angular movement of the bucket as it oscillates from side to side on said pivots is reduced to a minimum. Said bucketGis journaled by its said pivots 12 in the lower ends of the hangers 16 and 18, respectively, which are suspended by V-shaped hearings on the pivots or knife- edges 15 and 17, that are suitably fixed to the principal arm- s 19 and 21 of the scale-beam B. The oscillation of the grainbucket withinthe hangers is limited by suit- ,able bucket-stops fixed on the bucket, which stops, as herein shown, are designated by 92 and 93, respectively, being projecting lugs formed on a plate 94, (see Figs. 1 and 5 01115 which is suitably afiixed by rivets or otherwise to the end wall 95 of the grain-bucket G. Said bucket-stops are provided for each of the hangers, as indicated in Fig. 2. It will be understood that the particular construction and mode of fastening said stops is immaterial to the principal features of my present improvements.

For detaining the bucket in its forward and backward positions, respectively, I have shown in this application the bucket-latch or detent-latch and catches, described and claimed in Letters Patent No. 442,715, granted to me December 16, 1890, to which reference may be had for amore particular description thereof. Said detent apparatus comprises a bucket latch or lever 42, which is pivoted at 43 to the hanger, and whose projecting end 45 engages with a bucket-latch stop carried on the frame-work in a normally-fixed position, which shiftable stop constitutes one feature of my present improvements. The dctcnt-catch 41 is fitted into the arm 42 and fixed therein by a screw. Said catch a1 engages with the detent catch or stop 10, which is suitably secured to the side of the grainbucket. The rearward end 45 of the lever 42 is preferably of a segmental form, being substantially concentric to the bucket-supportingknife-edges when the beam is at the poising-point, and for the reason set forth in the aforesaid Letters Patent No. 442,715.

At its lower end the grain-bucket is formed with two discliarge'spouts 3t and St; for the forward and rearward bucket-chambers, respectively. The inner walls of said spouts are usually provided with adjustably-fixed sheet-metal guards 59 for regulating the slight clearance required between said inner wall and the bucket-closers. In my present improvements the bucketeloser is in the nature of a valve arranged to have a swinging movement under and out from under the bucket discharge-spout. Said bucket-closers are designated by and 76, respectively, and are provided with arms 79 and 80, Fig. 1, which are pivotally supported on studs 77 and 78 fixed in the grain-bucket. For operating said closers the upper ends of said closer- arms 79 and 80 are provided with studs 81 and 82, respectively, to which the links 83 and 85 are fitted, the upper ends of said links being connected to the studs 86 and 87, which are properly located therefor in the hangers. In practice one end of each closer is connected to one hanger and the other end of each closer to the other hanger, whereby the closerplates 75 and 7 6 form, essentially, rock-shafts connected to both hangers, so that the swinging movement of the hangers relatively to the bucket is controlled and made substantially uniform. By this means sufticient control of the bucket is had without any rigid connection between the hangers for maintaining their parallelism, and at the same time all of the connections and pivots may be freely titted so that the bucket may swing without material frictional resistance. The bucketclosers and their connections with the hangers being substantially similar and oppositely disposed, as indicated in Fig. l, the operation of the closers will, it is thought, be perfectly understood by comparison of Figs. 1, (5, and 7. The proportions of said parts and their organization are such that the closer 76 is open, as in Figs. 1 and 6, when the closer 75 is closed, as shown in said figures. On the bucket swinging from its rearward position, as in Fig. 0, to its forward position, as in Fig. 7, the closer 75 is opened and the closer 76 is shut, and vice versa. The pivots 77 and 78 of said closers, respectively, are placed substantially over the outer edge of the bucketspouts, so that the weight of the grain on said closers tends somewhat to open the closers, and said pivots are placed at such a height above the lower ends of said spouts, and substantially as shown in Fig. 1, that the angular movement of the closers carries them substantially beyond the bucket-spout when the closer is open, at the same time bringing the closer-plate to such an inclination, substantially as shown, that the grain will run freely oit therefrom. The closer-spouts are set ata distance below the lower line of the bucketspout greater in practice than the thickness of the kernels of grain to be weighed by the machine, so that said grain cannot wedge in and clog the machine. To prevent leakage of grain on the inner side of said bucketspouts the aforesaid guard-plates 59 are employed. At the ends and outer side of the spout the closer is provided with end walls 47 and an outer wall TS, (see Fig. 1,) said end walls forming, in effect, the bases of the closer- arms 79 and 80.

The regulator apparatus comprises the regulator proper, adapted to be operated by m eansot' the accumulation of grain discharged from the grain-bucket, shiftable stops controlled by the regulator for disengaging the bucket-catches, and connections controlling a cutoff valve from the regulator. The regulator herein shown is the regulator-hopper P described and claimed in Letters Patent of the United States No. 434,702, granted to O. H. Cooley and F. II. Richards August 19, 1890. Said hopper is pivotally supported at 98 and is counter-poised by the weight 11, carried by an arm 10, fixed to said hopper, which is limited in its movements by suitable stops, as, for instance, pins fixed in the frame-work, as at 399 and T00, Fig. 1. In practice said arm 10 is situated atabout one-fourth of the length of the hopper P from one end of said hopper, being between the counter-weight W and the side column aof the frame-work. On the rearward side and at the ends of the regulator-hopper are short arms, as 398 and 498, to which are pivotally connected the connecting-rods foractuating the aforesaid stops and the valve-connections.

The bucket-latch stops t6 are carried on the forward ends of levers 395, which are pivoted to the frame-work at 396 and are connected at their rearward ends to the connecting-rods 397, whose lower ends are connected to said regulator-hopper arms, as will be understood by comparison of Figs. 1 and 4, in which this feature of the regulator apparatus is shown in side and plan views, respectively. The oscillating movement of the hopperP on its pivots 9S acts through said rods 397 to swing the lever 395 on its said pivot 396, and thus on the rising of the hopper to raise said stops t6 into their operative position, (shown in Figs. 1 and 6,) and on the fall of the hopper, as in Fig. 7, to lower said stops into their inoperative position. (Shown in Figs. 7, S, 9, l0, and 11.)

Referring again to the valve mechanism and to the cut-off valve 70 and the shiftable actuator for operating said valve from the scalebeam, it will be observed that in Figs.

1, 2, and 3 said actuator-arm 54 is connected by a connecting-rod 84, through the intermediate pivot 96, to the arm 97, that is carried 011 a stud 58, fixed in the arm 52 of the scalebeam. Said intermediate pivot 96 constitutes the middle pivot of a toggle comprising two links 84 and 97, which, as shown in Fig. 1, have their three pivots in substantial alignment, the pivot 96 standing, also, substantially in the axis of the scale-beam. For operating said links to shift the actuator from its operative to its inoperative position, said pivot is connected by a rod 13 to the arm 498 of the regulator-hopper P, as more fully set forth in my aforesaid Letters Patent No. 442,712.

When the regulator stands in its uppermost position, (shown in Fig. 1,) said connections hold the actuator in its operative position, (also shown in Fig. 1,) irrespective of the beam movement. On the descent of said regulator, as when the same is loaded with grain, the pivot 96 is raised, thereby shifting the actuator into its inoperative position and closing the regulator and cut-off valve 70, as in Figs. 7, 8, and 9.

The operation of the machine as regards the Valve mechanism, the bucket-catches, and the regulator-hopper considered by itself and in connection with the valve mechanism,will be fully understood from the aforesaid Letters Patent and prior applications. The operation of my present improvements and of said prior inventions in connection therewith are shown in the series of views comprising Fig. 1 and Figs. 6 to 13, inclusive. In Fig. 1 the scale-beam stands in its highest position, (reference being had, of course, to the bucket-supporting arms of said beam,) and the reducing and cut-off valves are both open, while the bucket stands in its rearward position, ready to receive grain in the forward compartment thereof, which is at the left handin said series of figures, and the regulator-hopper P is raised, throwing into their operative positions the stops 46 and the actuator 55. The machine being thus conditioned and the grain being supplied to the chute H, as indicated by the stippling in Fig. 6, the grain flows into the forward compartment, as shown in Fig. 6, until themajor part of the load is received and the reducing-valve is closed, as there shown, allowing the drip cl to flow into the bucket. This continues until the load is completed,when the beam descends and the cut-ofi valve 70 is closed, as in Fig. 7. The descending bucket in the meantime brings the levers 42 against the stops 46 (while the stops are in the position shown in Fig. 6) and disengages the bucket-catches, whereupon thebucket swings over, by reason of its load, into the position shown in Fig. 7, thereby opening the closer 75 76, as there shown. On this movement of the bucket the grain flows out, as indicated in Fig. 7, into the hopper P, thereby overloading said hopper and carrying the same into its lowermost position, as there shown.

and closing the closer If it shall happen that the grain is taken away rapidly, the accumulation in the hopper P will be insufficient to carry down said hopper, which will remain raised, as in Fig. i 6, and the operation of the machine will continue; but if the discharge-outlet of thehopper P is somewhat obstructed (as is supposed to be the case in Figs. 7, 8, 9, and 10) then the accumulation in said hopper P carries down the same and throws the stops 46 into their inoperative position and at the same time shifts the actuator 55 into its inoperative position, whereby the valve 7 O is continued closed and the stops 46 are continued down. If now the grain is slowly discharged from the hopper P, (as is supposed to be doing in Fig. 8,)

the load in the forward bucket-compartment is gradually lowered, (as indicated by comparison of Figs. 7 and 8,) so thatthe counterpoise W raises the bucket, opens the valve 60, and thus permits grain to flow (as indicated by the stream 6, Fig.8) into the rear compartment of the bucket, thus gradually increasing the total bucket-load (part of said load being in each compartment) until, as shown in Fig. 9,

the scale-beam is carried down by said combined partial loads and the reducing-valve thereby closed, the gradual discharge of grain from the hopper P continuing as before. Finally the load in the forward bucket-compartment will be entirely discharged, as in Fig. 10, thus again allowing the beam to partially rise and partially open the valve 60, whereby more grain is allowed to flow, as at e, into the rearward compartment until thiscompartment has received the major part of its load, as indicated in Fig. 11, and thus again close said reducing-valve 60, when the machine stands idle, as indicated in said Fig. 11. Said gradual discharge from the hopper P still continuing, the grain is first lowered in said hopper from the full load (shown in Fig. 10) to the partial load, (shown in Fig. 11,) and later to the substantially empty condition in Fig. 12, wherein the hopperPis shown as having been raised to its former position.

(Shown in Figs. land 6.) By said movement andby means of the rod 13 above described, the cut-01f valve is opened, and the dripcolumn d flows into the rearward bucketcompartment for completing the second bucket-load. When this second load is thus regularly completed, said hopper being now empty and the stops 46 in their operative position, the bucket is carried down, as in the first instance, until the levers 42 strike said stops46,and thus unlock the bucket, which is carried by its load from its forward position in Fig. 12 to'its rearward position in Fig. 13, thereby closing the empty forward compartment and opening the closer 76 of the rearward compartment,which discharges the rearward load and allows the scale-beam to rise, as in Fig. 1, ready for receiving a third bucket-load in the forward compartment, as in Fig. 6. Thus by means of my present improvements the complete cycle of loading and .iegnlating operations goes on without at any time the bucket being empty of graimeXcept, possibly, when the regulator-hopper is very rapidly discharged. In practice the scalebeam is not carried down, at the stage indicated in Fig. 9, quite as far as there indicated, since the gradual closure of the reducing-valve provided for by the reducing camarm (it), as described in the aforesaid Letters Patent No. 412,724, co-operates with the gradual discharge of the grain to increase the load in the rearward compartment gradually as the load in the forward compartment is reduced, thus partially opening the reducingyalve and avoiding a fulldescent of the scalebeam. In practice, however, it is deemed essential, as a matter of safety, that the stops 46 shall be thrown down by the descent of the hopper I suiiiciently to be inoperative for detaching the bucket-latches, even if the bucket should descend to thelowest point in its stroke.

It will be understood that my invention is not limited to the use of a multiplicity of bucket or detent-latches in the bucket mechanism, or of the shift-able bucket-latch stops, since in some cases it is sui'ficient to use one detent-latch located at one end of the bucket and operating in connection with one of the bucket-supporting hangers, and to use for actuating said single latch only one shiftable bucket-latch stop carried by the frame-work and operatively connected to the regulator.

llaving thus described my invention, I claim- 1. In a grain-weigher, the combination, with a rising and falling grain-bucket suspended from the scale-beam of the grain-weigher and having a bucket-latch for discharging the load, of a regulator located and supported for operation by the discharged grain, and a shiftable bucket-latch stop carried by the frame-work and operatively connected to the regulator, whereby said stop is shifted into an inoperati\*e position on the working stroke of the regulator.

2. In a grain-weigher, the combination, with the scale-beam and with the oscillating grainbucket suspended thereon, said bucket being arranged to have a movement relative to the hangers for discharging the load of grain, of a bucket-latch for disengaging the bucket to discharge the load, the regulator located and supported for operation by the discharged grain, and a shiftable bucket-latch stop carried by the frame-work and operatively connected to the regulator, whereby said stop is shifted into an inoperative position upon the working stroke of the regulator.

3. In a grz'tin-weigher, the combination, with the scale-beam and with the hangers suspended therefrom, of the oscillating grainbucket pivotally supported in said hangers, stops limiting the oscillating movement of the bucket, a bucket-catch, substantially as described, for locking the bucket in its respective positions, the shift-able bucket-latch stop arranged for normally disengaging said catch on the descent of the bucket, and a regulator, substantially as described, operatively connected to shift said stop into its inoperative position on the working stroke of the regulator.

4. In a grain-weigher, the combination, with a grain-bucket and hangers, substantially as described, suspended from the scale-beam of the grain-weigher, and with the regulatorhopper below said grain-bucket, of the bucket-catches and the bucket-catch lever-l2, and the stop etG normally located for operating said bucket-catch lever and carried by a lever operatively connected to said hopper, whereby on the descent of said hopper said stop 4:6 is carried out of position for operating said bucket-catch lever.

5. In a grain-weigher, the combination, with the hangers suspended from the scale-beam, and with the oscillating bucket pivotally supported, substantially as described, in said hangers, of the closers and 76, pivoted to the bucket and connected with the hangers above the bucket-pivots, substantially as described, whereby on the rearward movement of the bucket the forward compartment is closed and the rearward compartment opened.

6. In a grain-weigher, the combination, with the hangers and with the oscillating bucket pivoted at the lower end thereof to said hangers, of the closer '75, carried on pivots 77 and connected by a rod 83 to the hanger at 86, the movement of the bucket relative to the hanger being limited by stops and catches, substantially as described, whereby the movement of the closer is limited.

7. In a grain-weigher, the combination, with a rising and falling grain-bucket suspended from the scale-beam of the grain-weigher and having a bucket-latch for discharging the load, and with a regulator located and supported for operation by the discharged grain, of a valve normally actuated by the scalebeam through a shiftable valve-actuator operatively connected with the regulator, where by said valve may be closed by the regulator independently of the scale-beam movement, and a bucket-latch stop shiftably supported and operatively connected with said regulator, whereby on the working stroke of the regulator the bucket-latch stop is thrown into its inoperative position and the cut-off valve is closed, thereby preventing the completion of a second bucket-load before the discharge of a first bucket-load and preventing the discharge of an incomplete bucket-load.

8. In a grain-weigher, the combination, with a bucket mechanism, substantially as described, suspended from the scale-beam of the grain-weigher and having a bucket-latch for discharging the load, and with a regulator located below the grain-bucket and supported for operation by the discharged grain, of the cut-elf valve, the shiftable actuator on the beam for actuating said valve from the scale-beam movement, actuator-shiftii'iglinks, substantially as described, operatively connected to the regulator, whereby said actnator uator-shifting links are operated for the clos- [0 may be shifted for closing the valve indeing of said valve, thereby preventing the compendently of the scale-beam movement, and pletion of a second bucket-load before the a shift-able bucket-latch stop operatively condischarge of the first bucket-load. 5 nected with said re 'ulator, whereby on the a 4 v working stroke of tli e regulator the bucket- FRANLID RICHARDS latch stop is thrown into its inoperative po- WVitnesses: sition for preventing the discharge of an in- W. M. BYORKMAN, complete bucket-load, and whereby the act- C. H. OOOLEY.

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