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Publication numberUS1689403 A
Publication typeGrant
Publication dateOct 30, 1928
Filing dateFeb 4, 1927
Priority dateFeb 4, 1927
Publication numberUS 1689403 A, US 1689403A, US-A-1689403, US1689403 A, US1689403A
InventorsCarl Olson Robert
Original AssigneeCarl Olson Robert
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1689403 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Oct. 30, 1928. v 1,689,403

R. c. oLsoN BUNG Filed Feb. 4, 1927 Patented Oct. 30, 1928.




Application filed February 4, 1927. Serial No. 165,944.

This invention relatcs to a bung for barrels and the like, one of the object-s being to provide a device of this Character having a lock combined therewith whereby, after the bung has been properly sea-ted within the hole in the barrel, the lock can be actuated so as to securely fasten the bung in position, thereby preventing removal of the contents of the barrel.

Another object is to improve upon the construction of the lock so that the same will be compact, durable and elficient and easy to assemble.

A further object isto provide a bung the locked portion of which cannot be removed or tampered with as long as the bung is secured in place. l

7ith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangeinent of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may. be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings, the preferred forms of the invention have been shown.

In said drawings,

Figure 1 is a section through a portion of a barrel and the bung therein, a part of the lock being shown in elevation and a part in section7 the section being taken on the line 1-1, Figura 4, the act-uating disk being in elevation.

Figure 2 is a front elevation of the bung.

Figure 3 is a section on line 8-8 but showing the bolt retracted.

Figure 4 is a similar view showing the bolt projected as in Figure 1.

Figure 5 is a transverse section through a portion of the bung.

F igure 6 is a section through a slightly modified structure.

Figure 7 is a sectional view on the line *ll-7, Figure 6.

Referring to the figures by characters of reference A designates a portion of a barrel provided with a. bung hole B. The bung constitut-ing the present invention includes a` circular head 1 of any desired thickness. from one face of which is extended a tubular portion 2 concentrio with the head and adapted to fit snugly within the bung hole B and to ef;- tend throughout the depth thereof.

. Projecting into the head 1 and its extension 2 is the casing 3 of a tuinbler lock, this casing being provided with oppositely extending ears 4 projecting close to opposed portions of the inner' surface of the extension 2. In each of these 'cars is mounted a set screw 5. Slots 6 are provided in diametrically opposed portions of the extension 2 and insertable into each of the slots is a segmental retaining plate 7, the casing 3 being extended between the two plates as shown. The outer ed0`es of the segmcntal plates are flush with the out-er surface of the extension 2 and these plates are held against displacement by pressure of the screws 5 theroagainst, the set .sorews also serving to hold the casing 3 of the lock'properly positioxed within the bung so that it will beretained firmly and cannot be withdrawn therefrom.

The lock includes7 as a part of its methanism, a disk 8 niounted for rotation at the back of the casing 3, this disk being adapted to be operated when a proper key is inserted in the lock and turned. The mecha isin for setting up this action has not been shown in detail because it constitutes an ordinary lock mechanism and is, in itself, no part of 'the present invention; f

A r-etaining plate 9 is mounted onthe back or inner end of the extension 2, this plate being circular and of the same diameteras said extension 2. The plate is held detachably to 'the extension by screws 10 extending therethrough into the marginal portion of the entension as shown. A broad groove 11 is formed diametrically within that face of the plate 9 oontacting with the extension and rnounted to slide within said groove are parallel bolts 12 having a sliding contact with each other and with the walls of the groove. The bolts are so proportional that, when completely retracted within the groove 11, their outer ends will be flush with theperiphery of the plate 9. One of the bolts 12 has an elongated r-ecess 13 in one side edge into which projects a lug l/ extending from the other bolt. rl`hus the relative sliding movement of the bolts is limited, as will be obvious.

Each bolt has a transverse groove 15, the two grooves being so located that when the bolts are completely retracted, the grooves will aline as shown in Figure 8. `Likewise when the bolts are thus positioned the lug 14 2 i a 1,889,4.os

cooperates with one wall of the recess 13 to prevent further retraction of the bolts. See Figure 8.

Pins 16 are extended from the disk 8 and project into the respective grooves 15. In use the bolts 12 are retracted to the positons shown in Figure 3 after which the bung is inserted into the hole B so that the head 1 will rest against the outer surface of the barrel. Vllien the bung is properly located the inner surface of its extension 2 will be substantially flnsh with the inner surface of the adjacent portion of the barrel A. Thereafter the disk 8 is rotated by actuating the key K. Conseqnently the pins 16 will thrust against the walls of the respective grooves 15, forcing the bolts 12 in opposite directions until limited by contact of the lug,` 14: with one of the end walls of the recess 13 as shown in Figure 4. This projecting; of the bolts will obviously bring' the outer ends thereof beyond the periphery of the plate 9 and extension 2 and back of portions of the wall of the barrel. Thus the bung will be fastened secnrely in the barrel, as shown in Figure 1 and by then removing the key it becomes impossible for any one to remove the bung without first inserting' the proper key.

In Fignre 6 there has been shown a slightly modified structure wherein the extension 17 of the bung is mounted for rotation within a sleeve 18 exteriorly screw threaded and engaging an interiorly screw threaded collar 19 extending into a barrel at the bring' hole and forming' an integral part of the barrel. Sleeve 18 has notches 20 in its inner end, the said end projecting` into the barrel beyond the collar. The lock casing has been indicated generally at 21 and is secured in the extension 17 as heretofore explained or in any other manner desired. A plate 22 is secnred to lthe inner end of this extension 17 and carries a diametrieally disposed bolt 25 having a lug;` 26 at one end. A transverse groove 27 is formed in the bolt for engagement by a pin 28 extending' from the rotata-bl-e disk 29 of the lock. l/Vhen the bolt 25 is retracted the 111g 26 is seated within one of the annular series of notches 20 in the sleeve 18. Consequently said sleeve can be screwed readily into the collar 19 until the bung is firmly seated at which time the bolt will be located inwardly from the collar 19. Hereafter, by actuating the key K the pin 28 can be caused to shift bolt 25 so as to move the lug 26 out of the notch 20 in which it is seated. Consequently the connection between the extension 17 and the sleeve 18 is broken and the said extension can be rotated within the sleeve without perinitting withdrawal of the bung. In other words the bung` will be retained by engagement of the log 26 with the inner end of the collar 19. Should it be desired to remove the bnng it is first necessary to retraet the bolt so as to bring the log 26 away from its position back of the collar 19 and into engagelnent with one of the notches 20. Thus the bnng extension 19 is locked to the sleeve 18 and by then rotating the head of the bung the extension, with the threaded sleeve thereon, can be iniscrewed.

llhat is claimed is:

The combination with a bung having a tnbnlar extension, a bolt slidable radially on one end of the extension and means for retaining' the bolt and guiding it, of a lock casing within the bung, opposed segmental retaining' plates insertible in the extension at opposite sides of the lock casing, means carried by the casing for binding upon said plates to secure the plates in the extension and to fasten the lock in the bung, and key operated means carried by the lock casing for shifting the bolt radially relative to the extension.

In testimony that I claim` the foregoing as my own, I have hereto affixed my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4358941 *Oct 20, 1980Nov 16, 1982Zimmer John CSecurity method and apparatus
US5724840 *Mar 21, 1996Mar 10, 1998Kaba High Security Locks CorporationCam lock
U.S. Classification217/108, 70/165, 220/210, 70/168, 70/371
International ClassificationB65D39/08, B65D39/00
Cooperative ClassificationB65D39/082
European ClassificationB65D39/08A