US1760888A

US1760888A - Lock cover for cans

Info

Publication number: US1760888A
Application number: US210737A
Authority: US
Inventors: Paul S Shield
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-08-05
Filing date: 1927-08-05
Publication date: 1930-06-03
Anticipated expiration: 1947-06-03

Description

June 3, 1930. P. s. SHIELD LOCK COVER FOR CANS 2 sheets-sheet 1 Filed Aug. 5, 1927 NEY `)une 3, 1930. P. s. SHIELD LOCK COVER Foa cANs 2 Sheets-Sheet 2 Filed Aug. 5, 1927 Patented June 3, 193() UNITED STATES y laaste PATENT @FFQ PAUL S. SHIELD, OF CINCINNATI, OHIO, ASSIGNOR T AUGUSTINE DAVIS, JR., OF CINCINNATI, OHIO LOCK COVER FOR OANS Application filed August 5, 19.537. Serial No. 210,737.

The invention is an improved lock cover for vessels, such as oil or milk cans. Patent 1,370,007 of March 31, 1921, to Augustine Davis, Jr., discloses a can having a mouth with a beaded rim, and a lock cover which can be applied to the vessel in any position and without turning or twisting, the cover having locking pieces which are turnable and also movable inwardly and outwardly in the cover to operate under the overhanging.

rim. Such a cover makes possible the use of a can neck of uniform external contour, without any lugs or other devices on the vessel save the beaded upper edge of the neck itself, for cooperation with the locking means. more conveniently operable and generally more satisfactory can is obtained.

rihe present invention is an improvement on and within the broad aspect of the said prior invention. In the particular construcf tion shown in the said Davis patent, two separate and separately operated levers were required for the locking pieces at diainetrically opposite points on the cover. One of the objects of the present invention is to provide a construction having a single handle common to both locking' pieces, soV aste set both pieces into locking position by a single move- 3o ment in one direction, and to release both pieces from the overhanging rim by a single movement in the opposite direction. For this purpose a slidable connection is arranged between the locking pieces Vand opposite ends of the operating lever or handle. Further'- niore, cam means are provided of such character as to automatically and positively move the locking pieces outwardly as well as in` wardly, when the lever is moved in one di.

4D rection or the other. This also di'ers from the construction of the Davis patent, wherein cani means reacting between the cover and the rocking pieces forced the locking pieces inward on turning in one direction, and permitted them to be pulled out by hand when turned in' the other direction, but did not automatically move them out by and'with suoh turning movement.

The invention exhibits a simple, effective,

compa'ctvand economical construction and or-V In this way a simple, more sanitary,

ganization, which can be best described hereinafter. c

In the accompanying drawings forming part hereof:

Fig. 1 isa plan view of the cover on a neck of can, the parts being shown in the locked position, and portions being broken away and in section, a sleeve and a bushing at the left of Vthe view being in section, while at the right the same parts are in elevation;

Fig. 2 is a vertical section through Fig. 1; Fig. 3 is a vie'w similar to Fig. 2, showing e u ocked condition;

Fig. i is a side elevation, showing the common lever in the unlocking position in full lines, and in the locking position in broken lines;

Fig. 5 is an enlarged fragmentary top view in horizontal section with portions in elevation;

6 is a cross-section on the line 6-6 of Fig. 5; and

Figs. 7, 8 and 9 are detail perspective views.

The neck 2 of the vessel has a curled over upper edge or bead 3 containing` a'wire i for strength. Such a bead constitutes an overhang extending circumferentially around the neck reinforcing the same and forming a simple and sanitary means for cooperation with the locking means of the cover 5.

The cover has a depending skirt 6 which iasses downward around the bead 3, and a groove 4 under its top holding a packing gasket 8 which is compressed against the top of tl e neck. As in the Davis patent aforesaid. the cover can be applied to the neck at any point, and without the necessity for turnor twisting.

rihe skirt 6 is pierced at diametrically opposite points with openings 9 of substantial siZe, and projecting outwardly from around these openings are thimbles or housings 10, having base flanges 11 which are welded or otherwise united to the skirt. Fixed in these thimbles are collars or bushings 12, preferably inserted with a drive fit, and'turnable in said bushings are sleeves 13. inside these sleeves are plunger stems 14 of locking pieces, which may be designated by the same referenceV character, these locking pieces having cam heads or eccentrics 15 to coact with the under side of the bead 3. The plungers are movable endwise in the sleeves.

The outer ends of the sleeves 13 are pinned to the opposite ends of a generally semicircular lever handle 16, which in the locked position extends around one halt the circumference of the skirt 6 below the top ofthe cover, as shown in F ig. 1 and in broken lines in Fig.

The inner portion of the sleeves 13, which, functionally.I may be regarded as parts or trunnions ot the operating lever, are longitudinally slotted at 17, each sleeve being preferably slotted in both sides. The bushings 12 have spiral, inclined or diagonal slots 18, constituting a species of cam, and these slots terminate in transverse portions 19 extending in planes approximately perpendicular to the axis of the plungers 14. 'Ihese slots are preferably formed in both sides of each bushing, extending in the same circumferential direction in each bushing, but the slots in one bushing being reversed with respect to the slots in the other bushing.

Each plunger 14 has a transverse pin 20, the ends oit which torni projections coopera ing with the

slots

17 and 18, 19. rIhe slots 1T with the projections of the pins 20 form sliding connections between the locking pieces 1li and the lever 16, whereby the locking pieces are turned by the lever and are tree to move in and out, or endwise, relatively thereto. The slots 1S may be regarded as cam means for forcing the locking pieces endwise when they are turned, and it will be seen that these slotted cams are double acting7 inasmuch as they positively displace the locking members endwise in both directions, not only inward but outward as well, as the result ot turning the lever handle in one direction or the other.

lli/when the lever is in the approximately vertical position shown in Fig. 4 the cover is unlocked, the locking cams or heads 15 being then approximately horizontal, that is'to say turned down away from the overhang 3, and being also drawn outward so as to clear said overhang` when the cover is lifted off the vessel. In order to lock the cover, the lever is swung down to the approximately horizontal position. rlhis causes the sleeves 13 to turn the locking pieces let through the slots 17 andthe projections of the pin 20; at the same time the stationary cam slots 18 force the locking pieces inward beneath the overhang. Vi'hen the projections reach the transverse portions 19 of the slots 18, the locking ca is 15 are beneath the overhang, and further turning movement forces these cams cr heads upward against the bottom of the bead or overhang, drawing the cover downward and squeezing the packing between the cover and the top of the necln The ends 21 oi" the transverse portions 19 of the slots 18 incassa are so arranged as to form stops limiting the locking turning movement to a position in which the locking cam-s or eccentrica 15 are carried slightly past dead center, J(hereby causingthem to remain locked in the locking position under the tension in the parts and particularly the elastic action of the gasket 8.

W hen the lever is turned in the unlocking direction, the locking cams 15 are first turned back and down out of thrust engagementl with the bead, and then, when the ends of the pin Q0 encounter the inclined portions 18 of the cam slots, the locking pieces are withdrawn outwardly within the openings 9 and the inner portions ot the thimbles 10, where they will not catch on the bead when the cover is lifted.

The preferred and practical embodiment or the invention has been described in detail, but it will be understood that the form, details and arrangements may be varied without departing from essentials;

I claim:

1. In a cover for a vessel having a circumferential overhang, a locking piece turnable and also movable endwise inwardly and outwardly in said cover to operate under said overhang at any point, and a lever, with a sliding connection between said lever and locking piece whereby the locking piece is turned by the lever but moves inwardly and outwardly relatively to the lever, and cam means on the cover cooperative with the locking piece to produce the endwise movement thereof.

2. In a cover for a vessel having a circumferential overhang, two locking pieces turnable and also movable endwise inwardly and outwardly in said cover to operate under said overhang at any point, and operating lever common to both said locking pieces, with sliding connections between the ends of said lever and said locking pieces whereby the locking pieces are turned by the lever but move inwardly and outwardly relatively to the lever, and cam means cooperative with said locking pieces to produce the endwise movement thereof.

3. In a cover for a vessel having a circumferential overhang, a locking piece comprising a plunger with a cam head turnable and also-movable endwise inwardly and outwardly in said cover to operate under said overhang at any point, a lever, a sleeve united with said lever surrounding and having sliding connection with saidv plunger, and cam means for producing the endwise movement of the plunger.

4. In a cover for a vessel having a circumferential overhang, a locking piece comprising a plunger with a cam head turnable and also movable inwardly and outwardly in said cover to operate under said overhang at any point, a lever, a slotted sleeve united with said lever and surrounding said plunger, with a projection on said plunger` cooperating with the slot in the sleeve, and a cam-slotted part on the cover also cooperating with said projection.

5. In a cover for a vessel having a circuinu ferential overhang, a locking piece compris.- ing a plunger with a cam head turnable and also movable inwardly and outwardly in said cover to operate under said overhang at any point, a lever, a slotted part united with said lever, a slotted part fixed in the cover, and a projection on said plunger cooperative with both slotted parts.

6. A. cover for a vessel having a circum- Jferential overhang, said cover having a pierced skirt, thimbles projecting from the pierced regions of said skirt, cam-slotted pieces fixed in said thimbles, slotted sleeves turnable in said housings, looking pieces having plungers turnable and movable endwise in said sleeves, with projections on the plungers operating in the slots, and a common lever having its ends fixed to said sleeves.

7. In a cover :tor a vessel having a circumferential overhang, a locking piece turnable and also movable inwardly and outward ly in said cover to operate under said overhang at any point, and means between said locking piece and cover for automatically and positively camming said locking piece outwardly as well as inwardly when the locln ing` piece is turned in its opposite directions.

8. In a cover for a vessel having a circumferential overhang, a plurality of locking pieces turnable and also movable inwardly and outwardly in said cover to operate under said overhang at any point, means between the cover and said locking pieces for producing the endwise movements thereoi:l automatically in both directions, and a common operating lever with connections at its ends with said locking pieces whereby said locking pieces are turned by the lever and move relatively thereto in lthe endwise directions.

9. In a cover for a vessel having a circum'iferent-ial overhang, a locking piece turnable and also movable endwise inwardly and outwardly in said cover to operate under said overhang, an operating lever, and cam means reacting between the cover and the locking piece or" such character as to produce positively and automatically the endwise movement of the locking piece when turned in both directions by said lever.

l0. In a cover for a vessel having a circumferential overhang, a locking piece turnable and also movable endwise inwardly and outwardly in said cover to operate under said overhang, an operating lever, and cam-slotted means between said cover and said locking piece for producing the endwise movement ot the latter in both directions.

11. In a cover for a vessel having a circumferential overhang, a lockingpiece turnable and also movable endwise inwardly and ,outwardly in said cover to operate under said overhang, an operating lever, and pin and slot means between said cover and said locking piece for producing the endwise movement of the latter in both directions, said means comprising a spiral cam element with a transverse portion at the inner end thereof.

l2. In a cover for a vessel having a circumferential overhang, a lockingl piece turnable and also movable endwise inwardly and outwardly in said cover to operate under said overhang, an operating lever, and pin and slot means between said cover and said locking piece for producing the endwise movement of the latter in both directions, said moans comprising a spiral cam element with a transverse portion at the inner end thereof, a stop at the end of said transverse portion limiting the turning movement of the locking piece at a position slightly past dead center.

13. In a cover for a vessel having a circumferential overhang, locking pieces turnable and also movable endwise inwardly andv outwardly on the cover to operate under said overhang at any point, a common operating lever. and means comprising hollow slctter. members in the cover around the stems of said locking pieces for determining the movement thereof. l

14. In a cover for a vessel having a circunaferential overhang, two locking pieces turnable and also movable inwardly and outwardly in said cover to cooperate with said overhang, a common operating lever for turning both of said locking pieces, said locking pieces being movable inwardly and outwardly relatively to said lever, and cam means cooperative with said locking pieces positively and automatically to produce outward as well as inward movement thereof as the result of turning the common operating lever in one direction or the other.

PAUL S. SHIELD.