US1971776A

US1971776A - Liquid scale

Info

Publication number: US1971776A
Application number: US693723A
Authority: US
Inventors: William P Feeney
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-10-16
Filing date: 1933-10-16
Publication date: 1934-08-28
Anticipated expiration: 1951-08-28

Description

W. P, FEENEY LIQUID SCALE Aug. 2s, 1934.

Filed oct. 1e, 1933 INVENTQR Patented Aug.'28, 1934 ENT" .oF-rice LIQUID SCALE William P. Feeney, Mosnee, Wis.

Application .October 16,

4 Claims.

This invention relates in general to improvements in regulators and more particularly to stock regulators for paper making machines and the like. In my Patents Nos; 1,134,831, 1,143,523,

'B 1,331,057 and 1,763,691,.I have shown `certain types and improvements in stock regulators for paper making machines. `This invention relates to certain improvements on these inventions and other improvements not disclosed in any. of the 510 above patents. y Y

Previously there have been encountered certain difficulties 'in the' operation Vof stock regulators such as the permittingof stratiiica'tion of pulp whereby settling takes place allowing a variation in density of the stock fed to the paper making machine. 'Also there has been a certain lag in the reaction of the controlmechanism to'changes in'volumelor characteristics of the feed stock.

One of the 'primary objects of my invention is to overcome thesedisadvantages and particularly to provide a more sensitive'control deviceor the regulating of theflow of stock.

`With the foregoing and other objects in View thein'vention' consists in the combination of parts and in the details of construction hereinafter set forth in the following description and appended claims, certain embodiments thereof being illustrated in the accompanying drawing in which:

Figure 1 is a view in side elevation partly in '1.30' section of the device;

Figure 2 is a view in section taken along line 2-2 of Figure 1;

Figure 3 is a view in section taken along line 3 3 of Figure 1; and

Figure 4 is a view in section taken along line 4-4 of Figure 1.

Referring more particularly to the drawing my device consists in a stock regulator which may be a box of wood or metal and which is divided into F546 three sections, l, 2 and 3, by means of suitable partitions 2' and 3'. The material to be weighed or regulated may be pumped or otherwise conveyed in compartment 2 through inlet pipe 25. The partition 3 may terminate at its upper eX- '.45. tremity below the level of the box and there is provided a gate 4 for regulating the overow from compartment 2 into compartment 3 over the top of the partition. Arranged exteriorly of the box above compartment 3 are a pair of A"ll bearing members 5 and 6 to receive a shaft 7 which has secured thereto an adjustment plate 8. This shaft also has secured thereto an arm 9 which is adapted to receive a weight 10 slidably thereon, the Weight being provided with a tight- '155 ening nut 11 so that the weight may be secured 1933, Serial No. 693,723

on the arm at any desired point. The weight 10 is preferably set so that when the stock rises to Within two or three inches of the top of the compartment 2 the gate4 will be opened by pressure and the stock will now back to the source of supply from compartment 3. The 'pressure necessary to overcome the closing effect or" the weight and the arm 9 on the gate 4 is naturally con#- trolled by the position of the weight on the arm. When the overflow gate-once starts to open, the pressure necessary to continue this opening operation becomes less as the arm and the weight approach a vertical position so that when it reaches a vertical positionv no pressurey at all will be required to'keep`the gate open. In the reverse operation as the stock becomes too thin or light in Weight or there is less of it `delivered to come partment 2 and the gate starts to close, it will close with increasing pressure as the weight will be becoming further 0off center of the bearings. 751, Contrary to the usual practice the regulating de-` vice being .located entirely exteriorly of the box the bearings 5 and 6 are preferably of the ball or roller type'and may be lubricated with oil rather than grease so as to make them as sensitive as possible.

From compartment'l the stock passes through the outlet 26 into thepaper making machine.

The outlet from compartment 2 to compartment 1 is provided with a hand operated gate 12, the gate being connected at 13 to a worm 14 operated by means of a hand wheel 15. This gate Works from the bottom up in guide members 24 to adjust for the amount of stock required. There is also arranged another gate 16 pivoted at 17 to a partition 3 for releasing the stock in compartment 2 so that it may flow through to compartment 3 and the outlet 27 and back to the chest or source of supply. 'I'his gate is to be used when it is desired to stop the flow of stock without stopping the pump. Integral with gate 16 is an arm 1S, the weight of which tends to keep gate 16 closed. In order to keep the gate 16 closed there may be provided a suitable catch 19 for engaging the arm 18 to main- '100 tain the gate 16 closed.

In connection with the operation of the overflow gate 4 it has been found in actual practice with the conventional type of regulator that if it required one pound of pressure to open the gate 1,195 one inch, it would require more pressure to open it an inch and a half and still more to open it two inches. In the present device, however, the necessary pressure to continue the opening operation becomes less and less as the gate swings 1110 open. The compartment 2 is preferably on a slight angle towards compartment 3 so that starting at the bottom of gate 4 this will allow the gate to be maintained more in line with the arm 9. Furthermore, the tank is narrow and just as Wide as the pipe that furnishes the supply so that the stock in compartment 2 will travel at the same speed when it leaves this compartment as it was travelling when it entered. This will not allow water to settle out and leave the thick stock on top.

In order to effect a connection between the gate 4 and the shaft 7 I have shown an arm 20 secured at 21 to the gate and terminating at its other end in a collar 22 through which the shaft 'l passes. The collar is iixed to the shaft so as to rotate therewith when actuated by the weight l0. Instead of having the partition 3 terminate below the top of the other partition and end walls as previously suggested, I have actually shown in the drawing the partition 3 recessed at 23 and formed the gate 4 so as to be adapted to regulate the overflow through the recess.

As previously stated my device is sensitive to changes in density of the stock. Thus if the stock becomes thick the added weight tends to open the gate 4 and pass the stock into the overow compartment 3 and out the outlet 27 so that a certain amount of the heavy stock will be recycled. In this manner the amount of solids to the paper machine may be controlled.

By means of the improvements above described, stratiiication in the supply compartment 2 is eliminated and there is always circulation in this compartment. There is no variation in the density of the stock which passes out of compartment 1 into the paper making machine.

I claim:

1. A stock regulator comprising an inlet compartment, an outlet compartment, and an overflow compartment, a passageway from said inlet compartment to said overflow compartment, said passageway being regulated by a gate, said gate being controlled by means responsive to pressure within the inlet compartment with decreasing resistance to said pressure as the opening operation of said gate continues from a closed position to a substantially fully open one.

2. A stock regulator comprising an inlet cornpartment, an outlet compartment, and an overflow compartment, a passageway from said inlet compartment to said overow compartment, said passageway being regulated by a gate, said gate being controlled by means responsive to pressure within the inlet compartment with decreasing resistance to said pressure as the opening operation of said gate continues from a closed position to a substantially fully open one, said means comprising a weight-operated arm connected to said gate.

3. A stock regulator comprising an inlet compartment, an outlet compartment, and an overflow compartment, a passageway from said inlet compartment to said overflow compartment, said passageway being regulated by a gate, said gate being controlled by means responsive to pressure within the inlet compartment with decreasing resistance to said pressure as the opening operation of said gate continues from a closed position to a substantially fully open one, said gate being disposed in closed position, at an angle to the vertical and being provided with a weight-operated arm connected thereto forY determining the amount of pressure necessary to effect a flow through said passageway past said gate.

4. A stock regulator comprising an inlet compartment, an outlet compartment, and an overflow compartment, a passageway from said inlet compartment to said overflow compartment, said passageway being regulated by a gate, said gate being controlled by means responsive to pressure within the inlet compartment with decreasing resistance to said pressure as the opening operation of said gate continues from a closed position to a fully open one, said gate being disposed in closed position at an angle to the vertical and being provided with a weight-operated arm connected thereto and arranged so that the resistance set up by the said Weight to the opening of the gate will become lessened as long as the opening operation of said gate continues, said weight being' adjustably carried by said arm.

WILLIAM P. FEENEY.