US1679775A - Cover - Google Patents

Description

Aug. 7, 1928. 1,679,775

A. LOCHOK COVER Filed July 26, 1926 2 S6 14 A E \6 15 3/ 7 1N VENTOR.

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ATTORNEYJ:

Patented Aug. 7, 1928.

ANDREW LOCHQK, OF LOS ANGELES, CALIFORNIA.

COVER. I

Application filed July 26,

This invention relates to covers,and particularly to a form of cover which is adaptable for tank purposes where the tank holds some volatile liquid such as oil, gasoline or the like, the purposes of the cover being to close an opening or a hatch-way, as it is sometimes termed, giving access to the interior of the tank. It is highly essential that the hatch-way with its cover be so constructed that whenthe cover-is closed over the hatch-way it is positively locked, and furthermore, vapor-proof.

An object of the present invention is to provide a hatch-way cover having the abovestated properties, and which inaddition may be operated without fear of any electrical discharge being generated, which might tend'to ignite the liquid within the tank, and furthermore, a cover which may be oper-' ated by the foot of an operator. v

Another object of the invention is the provision of a cover which is quick-acting and fire-proof. Other objects will suggest themselves as the detailed description proceeds, and which objects will include simplicity of construc-' tion, ease in use and general superiority.

\Vith the above and other objects in View, the invention consists in the novel and useful provision, formation, construction, association and relative arrangement of parts, members and features, all as shown in certain embodiments in the accompanying drawing, described generally and more particularly pointed out in the claims.

In the drawing:

Figure 1 is a side elevation of a tank embodying the improved cover;

Figure 2 is a side elevation of the said hatch-way and cover, and on an enlarged scale from the showing of Figure 1;

Figure 3 is a plan view of Figure 2;

Figure 4 is a fragmentary elevation of locking means for the cover and on an enlarged scale from the showing ofFigs. 1 to3 inclusive; and,

F igure 5 is an enlarged vertical sectional view showing the hatch-way and the said c over, and details thereof.

Corresponding parts in all the figures are designated bythe same reference characters.

Referring with particularity to the drawing, the improved device is'designated as an entirety by A, and in Fig. 1, I have shown said device as mounted upon or secured to a 1926. Serial No. 124,834.

provided with a rim flange or seat member 1 for the said cover when the same is closed I over the said hatch-way. Said hatch-way is likewise provided with internal screw .threads 2 whereby the same may be secured to an annular neck 3 associated with the tank and which neck has direct communication with the interior of the tank B. This hatchway is provided with two lugs 4 and 5 which are substantially diametrically spaced apart. Said lugs furthermore extend outwardly from the periphery of the annulus. The lug 1 is transversely notched as indicated at (3 to provide what may be termed a catch, and one wall bounding the said notch is inclined or beveled as indicated at 7 upwardly from the inner wall 8 bounding said notch. The opposite lug 5 is transversely bored at 9. The cover b is formed with a bearing or seat portion 10 adapted to cooperate with the seat 1 ,of the hatch-way when the cover is closed over the hatch-way, and said cover is likewise provided with two lugs 11 and 12 substantially diametrically spaced apart. The lug 11 is transversely bored at 13, and said lug is inclined upwardly relative to the plane of the base ofsaid cover. passed through the bores 13 and 9, and surrounding said bolt and between a nut 15 carried thereby and the surface 16 of the lug 5, is a coil spring 17. The coil spring normally tends to force the bolt downwardly so that the head 18 thereof bears against the top surface 19 of the lug 11, with the re- 7 salt that the normal tendency is to raise'the cover slightly or incline it relative to the seat A bolt 14 is 1of said hatch-way, as would be obvious. V

The lug 12 acts as a latch for cooperation with the lug 1 which acts as a catch and said latch 12 is formed with a bevel flange 20, the bevel face of which is adapted to cooperate with the bevel or inclined face 7 of the catch, as illustrated in Fig. 4. Furthermore, the said cover I) is provided with stiffeners as indicated at 21, which are in the form of flanges which transversely span the said cover.

The operation of the device is as follows:

The lug 12 which acts as a combined handie and latch may be kicked so that t ie latch portion thereof disengages the catch 1 of the hatch-way to move the cover from over said hatch-way. When this occurs the lug 11 will be urged to have its bottom ce 22 engage the top of the lug 5, substantially shown by dotted line at 23 in Fig. 2. Vi hen it is desired to close the cover over the hatch-way the foot may engage the member 12 and revolve it relative to the hatch-way to where the latch thereol will engage the catch. It will be evident that the bolt 14, due to the spring 17, will at all times attempt to move the cover into a tipped or raised. position over the hatch-way, and when the latch is engaging the catch the cover will be tightly engaging the seat of said hatch-way. Preferably the cover is formed of some material (lll'lfGlQIlil from the material of the hatch-way, the cover being preferably formed of bronze, and the hatchway of iron, with the result that no spark will be generated, due to movement of the cover upon the hatch-way. The method of locking the cover tends to provide a positive lock, and one which is quick-acting and absolutely fire-proof. it is far superior to screw locks or to that type of cover which is spring-pressed downwardly, as vapor pressure might tend to lift the latter form of cover; and furthermore, the present cover is easily operated by the foot, a factor of great importance.

While I have not illustrated any gasket revavvs members between the cover and the hatch way seat, I have not felt that it is necessary to use any gaskets, although I might use them in certain embodiments of the invent-ion. I have found in actual practice that the fitting is so close between the cover and the hatch-Way when the invention is formed.

in accordance with the drawing, that the device is vapor proof.

It is obvious that various changes and modifications may be made in practicing the invention, in departure from the specific showing of the drawing, Without departing from the true spirit of the invention.

Having thus disclosed my invention, I

claim and desire to secure by Letters Patent:

In a device of the character disclosed, a hatch-way formed with a seat, a cover therefor adapted to cooperate with said seat Said hatch-way being formed with a catch portion. and said cover beings; "formed with a latch arm adapted to cooperate with said catch, a lug formed at an angle to the plane ot the cover,iand a second in formed on said v ANDREW LOGHOK.

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