US1906866A - Soapstoning device - Google Patents

Description

May 2, 3933. c. 5:. MCQORMECK 15,96,866

SOAPSTONING DEVICE 4 Sheets-Sheet 1 Filed May 15, l95l .Qflamwmi .WCaxWakINVED/TOR.

AILTORNEY May 2, 1933. c. E. M CORWGK SOAPSTONING DEVICE 4 Sheets-Sheet 2 Filed May 15, 1951 May 2, 1933. c. E. MCCORMICK SOAPSTONING DEVICE Filed May 15, 193i 4 Sheets-Sheet 5 Qwxn-w1%. WCM INVENTOR.

ATTORNEY all Patented May 2, 1933 rarer CLARENCE E. MCCORMICK, F POLAND, OHIO, ASSIGNOR TO THE REPUBLIC RUBBER 4 COMPANY, OF YOUNGSTOWN, OHIO SOAPSTONING DEVICE Application filed May 15, 1931.

This invention relates generally to apparatuses for dusting adhesive surfaces with non-adhesive material and has particular relation to an apparatus of above designated character for coating the interior surface of a rubber tube as it is formed in a tube machine.

A principal embodiment of the invention comprises an apparatus having an inflatable bag as a part of a pulsating unit providing .a periodic blast of air for the purpose of carrying small quantities of powdered soapstone, or other suitable non-adhesive material, from a chamber formed in a lower portion of a container which also contains an inflatable bag and is operatively associated with the pulsating unit.

A further object of the invention is to provide means for controlling the amount of non-adhesive material injected into the blast of air.

A further object of the device is to provide means of regulating the frequency of pulsations made by the pulsating unit.

A still further object is to provide means for the prevention of clogging of the non-adhesive material in the chamber in which the same is carried, as the same is carried out into a blast current leading to an inner surface of a rubber tube which is being formed in a tube machine.

With the foregoing and other objects in view which will appear as the description pro ceeds, the invention resides in the combination and arrangement of parts and in the de tails of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of the device.

Figure 2 is a vertical section taken substantially on line 22 of Figure 1, showing parts broken away.

Figure 3 is a detail view of Figure 2.

Figure 4 is a top plan view of the device with parts broken away.

valve seat 7 in Figure 6.

Serial No. 537,555.

Figure 5 is a cross section taken on line 55 of Figure 2.

Figure 6 is a cross section taken on line 66 of Figure 4. 1

By referring tothe drawings it will be seen that in practice the device is portable and is attached to an air line 1. This air line 1 is provided with a valve 2 for the purpose of regulating the flow of air in the air line 1. This valve 2 is connected to a coupling 3 which leads to a compression chamber 4 within a valve unit 5. This valve unit 5 carries a valve 6 which is shown seat-ed upon :1 There are two openings from this compression chamber 4 which is directly above the valve 6. One opening leads to a tube 8 which has its other end connected to an air coupling 9 which is secured to a removable cover 10 of a container 11. The second opening is connected to a tube 12 which has its lower end connected to a coupling 13 which is connected to a valve 14 which is secured to an air coupling 15 which is connected to an inflatable bag 16 within a chamber 17. It will be seen that the chamber 1'? is supported by means of an arm 18 which is a continuation of one of support legs 19 of the device which are se cured to the container 11.

By referring to Figure 6 it will be seen that the valve 6 is seated, thereby causing the air coming through the air line 1 to flow through the tube 8 which is connected indirectly to an inflatable bag 20 which is positioned in the upper portion of the chamber 11. The air also will flow through the tube- 12 into the inflatable bag 16 which is located at the bottom of the chamber 17. It will be seen that the inflatable bags 16 and 20 are now being inflated.

Air is now entering from the air line 1 through the valve 2 into the compression chamber 4, and a portion of the air passes through the tube 8 leading to the inflatable bag 20. The inflating of the inflatable bag 20 seats a valve 21 upon a valve seat 22. The inflatable bag 20 forces downwardly a disc 23 which is positioned upon an upper end of a valve rod 24. This valve rod 24 is provided with a pin 25 which holds a retaining washer 26 from slipping upwardly upon the valve rod 24. Functioning between the valve seat 22 and underneath the retaining washer 26 there is provided a coil spring 27 which will unseat the valve 21 when the inflatable bag has reached a predetermined state of deflation. It will also be seen that a portion of the air now is simultaneously flowing through the tube 12 which indirectly connects to the inflatable bag 16. When this inflatable bag 16 reaches a predetermined state of inflation, a disc 28 is carried upwardly. Centrally attached to this disc 28 there is a stem portion 29 which carries an adjustable pin 30 provided with an adjustable spring seat 31. Between the adjustable spring seat 31 and a disc 32, which functions with a depended end 33 of the valve 6, there is positioned a coil spring 34. It will also be seen that there is provided a. secondary coil spring 35 which has its upper end seated against the disc 32 and its lower end seated against the disc 28. This secondary coil spring is larger-in diameter and functions outside or the coil spring 34. There is also provided a third coil spring 36 which functions between the disc 28 and a top piece 37 of the chamber 17 at a point 38. This coil spring 36 has its upper end functioning about a depended core portion 39 of the valve seat 7. As the inflatable bag 16 expands pressure is increased in the compression chamber 4 and a continued and increased upward thrust is maintained by the coil springs 34 and 35 until a point predetermined is reached where the pressure of the springs 34 and 35 overbalances that of the air in the compression chamber 4 and the downward thrust of the coil spring 36. At this time the valve 6 will be lifted from its seat 7 allowing the air confined in the inflatable bags 16 and 20 to rush out through the valve 6 into a chamber 40. A part of the air now goes out of the chamber 40 through an opening 41 of a tube 42 the lower end of which connects to a chamber housing 43 leading to a chamber 44. A supply of soap-stone is contained in the container 11 and intermittent movements of the valve assembly lowers charges of the soap-stone on a washer 45 from which the soap-stone will be blown on and out of an outlet tube 46 by correspondingly timed pufls of air from the tube 42. The balance of the air escapes through a vent in a side Wall of the chamber 40. It is obvious that when the inflated bags 16 and 20 are being deflated the valve 6 remains open and is held in this position by means of the coil spring 35. The valve 6 will again be closed when nearly all the air has been expelled from the inflatable bags 16 and 20. The air pulsations are produced by means of the seating and unseating of the valve 6 which is caused to act by the inflating and deflating of the inflatable bags 16 and 20 which are inflated and deflated simultaneously. As the air blast comes through the tube 42 into the chamber 44 the soap-stone which has entered the chamber 44 and rests upon the washer 45, is carried by the air blast down through the chamber 44 into the outlet tube 46 which is connected to any suitable tube machine. Tube machines are ordinarily constructed with a central opening providing for means for carrying non-adhesive materials into interiors of the rubber tube.

By referring to Figure 2 it will be seen that as the valve 21 is moved up and down on its valve seat 22 an agitation in the container 11 takes place due to the compression and extension of the coil spring 27 and a washer 47 which is positioned at a reduced portion 48 on the valve rod 24. It is important that the soap-stone be prevented from caking or otherwise obstructing easy passage through the valve 21.

By referring to Figure 3 it will be seen that the valve 21 is in an open position and the washer 45 has clicked up against a bottom of a valve seat 49 of the valve 21. It will also be seen that the washer 45 is against the bottom of the valve seat 49 and holds the soap-stone upon the same until lowered, as shown in Figure 2, when the air blast comes through the tube 42 carrying the soap-stone through the chamber 44 into the outlet tube 46. It is also obvious that this movement of the valve 21 is intermittent and timed with the action of seating and unseating of the valve 6. In order to provide for adjustment there is provided an adjustable handle 50 which carries a threaded stem 51 which in turn carries an adjusting nut 52. This adjusting nut 52 is provided with oppositely disposed prongs 53 for the purpose of preventing the nut from rotating.

In order to control the frequencies of the pulsations of the inflatable bags 16 and 20 there is provided a valve 2 which may be adjusted and a valve 14, which, when adjusted, regulates the rate of collapse of the inflatable bags 16 and 20.

What I claim is 1. In a device of the class described, a container for powdered material having an intermittently movable valve at its lower end, an inflatable bag and cooperating spring device for moving said valve, a pipe adapted to deliver successive blasts of air to the material discharged by the valve, an air supply line'having a branchv leading to said inflatable bag and a. branch leading to said pipe, a valve in the latter branch, and means for intermittently operating said valve including a chamber, an inflatable bag therein connected to move the valve, and a branch pipe connecting the last-named inflatable bag with the air supply line.

2. In a device of the class described, a container for powdered material having an intermittently movable valve at itslower end,

an inflatable bag and cooperating spring device for moving said valve, a pipe adapted to deliver successive blasts of air to the material discharged by the valve, an air supply line having a branch leading to said infiatable bag and a branch leading to said pipe, a valve in the latter branch, and means for regulating the frequency of the intermittent operations of said valve including a chamber, an inflatable bag therein connected to move the valve, and a branch pipe connecting the last-named inflatable bag with the air supply line.

3. In a device of the class described, a container for powdered material having an intermittently movable valve at its lower end, an inflatable bag and cooperating spring device for moving said valve, a pipe adapted to deliver successive blasts of air to the material discharged by the valve, means for varying the quantity of the powdered material delivered by each blast of air, an air supply line having a branch leading to said inflatable bag and a branch leading to said pipe, a valve in the latter branch, and means for regulating the frequency of the intermittent operations of said valve including a chamber, an inflatable bag therein connected to move the valve, and a branch pipe connecting the last-named inflatable bag with the air supply line.

In testimony whereof, I aifix my signature:

CLARENCE E. MCCORMICK.

Images