US2278850A - Dynamite box - Google Patents

Description

April 2- J. v. HAMMOND I 2,278,850

DYNAMITE BOX Filed Feb. 26, 1940 I Patented Apr. 7 1942 UNITED STATES PATENT OFFICE nmm nox John v. Hammond, Spangler, Pa. Application February No. 32

2 Claims.

This invention relates to an improved dynamite box.

One object ofthe invention is to provide a dynamite'box fabricated completely of wood so that no electric current carrying material of any description will be embodied in its construction.

which are located in opposed relation. In forming the box, the bottom is shiftedinto position with the elements Ii and I in their respective s1o'ts'8 and 9. Transversely extending grooves 6a and 1a are formed in the bottom wall 5.

Near the corresponding upper end portions of the walls I and 2, but beneaththe rounded por- And a still further object of the invention is to provide a box of this character which will be of simple construction and which will be highly eflicient in use.

Other objects of the invention, not specifically mentioned in the foregoing, willbecome apparent during the course of the following description.

In the accompanying drawing forming a part of my application.

Fi ure 1 is a perspective view of my improved dynamite box.

Figure 2 is a. vertical sectional view on the line 2-2 of Figure 1, looking in the direction indicated by the arrows.

Figure 3 is a vertical sectional view-on the line 33 of Figure 2. I

Figure 4 is a top plan view of the device, the handle employed being partly broken away in order better to show the position of the tensioning means when the latch employed is in operative position for holding the front closure in closed position.

Referring now to the drawing, throughout the views of which like numerals of reference will be seen to designate like parts, the numerals I and 2 indicate the side walls of my improved dynamite box. These side walls, as well as all the other parts of the box, are formed of wood or.'

other non-metallic material. The'walls I and 2 are formed with straight corresponding lower end portions 3 and extended rounded upper end tions 4 thereof, is positioned the top wall III of my improved box. The top wall is of gneater thickness than the bottom wall 5 and is formed with connecting elements II and I2 which, like the elements 6 and I, are of dove-tail formation. The elements. II and I2 are slidable in slots I3 and I4 which are shaped to receive said elements and are located in opposed relation to the walls I and 2.

Formed in the top wall III, substantially medially of its width and extending the major portion of its depth, is a dove-tail shaped guide slot I5. The guide slot communicates with the forward edge of the wall III and slidably receives a guide .element I6 which is formed on the under side of a latch member I1, said latch member being of substantially rectangular shape in cross section and being of a length substantially the same as the depth of the complete dynamite box. As will be seen by referring to Figure 2, the guide element I6 terminates short of the forward end of the latch member I! a distance equal to the thickness of the front closure I8 presently to be described in more detail.

In order normally to urge the latch member I1 forwardly, I provide a rubber band I9. By referring to Figures 1 and 4 of the drawing, it will be seen that the band I9 is stretched so that portions thereof are fitted in slots 20 formed in the front edge of the top wall I0 near the ends thereof. The band I9 is stretched rearwardly in straddling relation to the latch member I1 and has a rear portion engaged in an inclined kerf or notch 2|. It will now be understood that the band I9 will normally urge the latch member I! forwardly so that the front end face of the element I6 will engage the upper inner margin of the front closure I8. In this position, the forward end of the latch member will oven-hang the upper edge of the front closure I8 for effectively holding said front closure in closed position.

The front closure I8 is formed with guides 22 and 23 which are slidable in vertically extending tracks 24 and 25 formed in the walls I and 2 near their corresponding forward edges. Formed in the front face of the closure I8 is a finger hold 26 which will permit convenient raising of the closure for exposing the interior of the box,

when the latch member I! is retracted, for freeing the forward end thereof from the upper edge of said front closure IS. A tongue l8a is formed on the lower end'of the front closure l8 and is engageable in the groove 6a, formed in the bottom all 5, when said front closure is in closed position.

My improved dynamite box is provided with a I rear wall 21 which is held in place at its upper end by means of wooden dowels or pins 28 which extend through the rear margin of the top wall.

Under no circumstances will nails or other metal fastening devices be employed. Any suitable number of the dowels or pins 28 may be used.

- The upper end of the rear wall is reinforced by engagement with a shoulder Illa on the lower rear edge of the top wall l0. As shown in Figure 2, the rear wall 21 is formed at its lower end with a tongue 21a which engages in the groove 1a in the bottom wall 5. As will be seen in Figure 4, the rear wall 21 is formed with guides 28a which are slidably engageable in grooves 28b which extend along the side walls for a distance equal to the height of 'the rear wall. It will now be seen that the rear wall will be eifectively held in place without the use of metallic fastenings of any kind.

In order to permit convenient handling of my improved dynamite box, I employ a handle 29 which extends between the side walls I and 2 at the curved upper ends 4 thereof.

Attention is directed to the fact that inasmuch as the guide'slot I5 is of a shape to closely conform to theshape of the guide element 16, upward displacement of the latch member from the wall III will be prevented.

Havingthus described the invention, what is I claimed is: I

1. In a dynamite box having a top wall and a front closure, said top wall having a guide slot of dove-tail shape, said top wall having slots located near the ends of its forward edge, a latch member carried by the top wall and having a guide element of dove-tail formation slidable in the guide slot, said guide elementterminating short of the'forward end of the guide slot, and aresilient band carried in the slots in the top wall and engageable with the latch member for normally urging the latch member forwardly so that the forward end of the guide element will confront the upper inner margin of the front closure and the forward end of the latch member. will overhang the upper edge'of said front closure for preventing upward displacement of the front closure, said dove-tail shaped. guide slot cooperating with the dove-tail shaped element for preventing upward displacement of the latch member from the top wall.

2. A dynamite box having a top wall formed with a slot, a front closure for the box, a latch member having a guide element slidable in the slot, said latch member having a notch and said top wall having spaced slots, and a resilient band extending between the top wall and the latch member and being engaged in the notch andthe slots and normally urging the latch member into a position with its forward end portion overhanging the front closure and latching said front closure in place.

JOHN v. HAMMOND.

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