US 1621487 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Passed Mu. 2z, 1927.
UNITED STATES PATENT OFFICE.-
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Application med November 12, 1825. Serial No. 68,525.
My invention relates to improvements in containers, such as so-called tin cans, provided with detachable covers having flanges, the containers and the cover flanges having coopera-tive'thread means or screw threads,
vwhereby the covers may be screwed tightly upon the containers. In such class of containers there is liability that the covers may vbecome loosened during transportation and handling, that is to say, the covers may become more or less unscrewed due to jars and vother such incidents, whereby air may enter the containers or thevcontents may sift o ut.
The object of my invention is to provide cooperative' means between the contalner and the flange ofthe cover so related that when the cover is screwed tightlI upon the container they will be locke together against accidental or spontaneous loosening or unscrewing of the cover.
My invention com rises novel details of improvement that wi l be more fully herelnafter set forth and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part hereof, where- Fig. 1 is a side elevatonof a receptacle embodying my invention;
Fig. 2 is a similar view showing the cover detached from the rece tacle;
Fig. A3 is an enlarged detai cross section on line 3, 3, in Fig. 1;
Fig. 4; is a lcross section on line 4, 4, 1n Fig. 2; and y Fig. 5 is a detail section' online 5, 5, in Fi 2.
similar numerals of reference indicate corresponding parts in the several views. 0
The container body 1, as illustrated, 4is generally of ordinary construction and 1s represented in the form of a conventional so-called tin can shown rovided with an inwardly extending rolle edge 2 at the open end and with an outwardl extending bead `3 at a distance from sai end, a suitable bottom 4 being attached to the container in anydesired way. The cover ofthe' container is indicated at 5 shown having a. substantially iiat top provided with an annularly disposed inwardly inclined projection or indenture at 6 adapted to cooperate with the edge 2 of the container body to make aV tight fit therewith, the cover beingprovided withaflangeorskirt'edqptedwiit 4around the container at the open end.
Thread means are rovided between the container body and t e flange 7 for detachably securing the cover on the former. In the example illustrated the body 1 is provided adjacent to its open end with angullarlydisposed spaced threads 8, which may be made by pressing the material of the body outwardly, which threads-each extend for asuitable distance around the body and the end portionsof adjacent threads overlap, or extend one beyond the other, providing spaces- 9 therebetween, the m'idortions of the threads being exposed free rom oneY another. The flan e 7 of the cover is provided with spaced t reads 10 which are shorter than the threads 8 and have substantiall the same eneral angular position as thet reads 8 wen the body and cover are assembled. The threadslO may be made by pressing the metal of ilange 7 inwardly. It will be assumed that the foregoing parts are made'of suitable sheet metal, such as so called tin late, whereby the open end of the container od is more or less flexible and the flange 7 o the cover is'more or less flexible. The thread means may be of any suit propriete direction, as in the manner of y uniting screw threaded parts. The parts above described are substantiall similar to the container set forth in Unite States Letters Patent N o. `1,443,6$2,-granted January Upon the container body near its open end and upon the 'flange 7 provide locking means that will operate, when the cover has been screwed tightly upon the body, to retain the cover from accidental or s ntaneous unscrewing or loosening from t e body. In the example illustrated projections 11 are provided upon vthe body adjacentjto the threads 8, and extending at one side thereof. thereby being located between the open end of the body and the bead 3, and stops or projections 12 are provided on the flange 7 to cooperate with corresponding projections I11 when the cover isl screwed u on the body to lock the parts together. T e stops 12 are shown located in the angular direction or plane 'of the thread means 10 of the angl', e
said, stops located nearer extend under the corresponding thread 8.
The relative locations of the threads, projections and stops on the body and the cover ange are such that when the cover has been screwed tightly upon the body astop 12 will have passed over a4 projection 11 and have f snapped behind the saine to lockthe cover in lace onthe body, the flexibility of the flange g permitting vsufficient expansion thereof to enable projection -12 to ride upon a' projection11 and snap behind the same, although the flexible openend of the'body may bend .inwardly for the purpose. It is not possible in the commercial production of tin cans for all of themto have equal dimensions from the threads 8 to the extreme outer edges of the bodies', nor from the beads 3 to such edges, nor to have the cover flanges 7 all ofthe saine depth' from the tops of the covf ers to the extreme lower edges of the flanges that would engage the beads 3. Hence I provide one 'ormore series of adjacent projections 11, having spaces 11 therebetween to receive a corresponding, complemental stop or projection 12 on flange 7, so that the stop may pass one .or more fof the projections 11 -oi? a series to enter a corresponding space 11a, or to enter the spaceat 11, to accommodate yextreme inequalities in the dimensions specified between various 'bodies and covers, when the'thread means have functioned in the screwing of the cover on the body.
In the example illustrated the distance between the edges a and I;A -of an adjacent thread 10 and stop or projection -12 is slightly greater than the distance between/the outer edges al and e of three associate pro- A jections 11,' (Fig. 2), to prevent a thread 10 of the cover flange from abutting against a -projectioii 11 on the body before the cover is locked thereon by the cooperation of an adjacent stop 12 with the last projection 11 v of a series of three. lIt also will be observed thatthe projections 11 and the stops 12 are independent of the thread means in such a way that the latter may coo erate in screw'- ing the cover oli the body without regard to -the locking means 11 and 12, and the latter cooperate independently of the thread means,
When the cover .isto'besecuredupon the body 1 the parts maybe located substantially and rest in the first space 11' in case4 the cover lits tightly at the open end of the body with its inward projection or indenture 6.'
engaging the open-end of the body. In case the cover is not entirely tight upon the vbody the cover will be further rotated i-n the direction of said arrow so that the aforesaid stop ,12 will ride over the next projection 11 of the series and enter the adjacent space 11a. If the cover is not then securely tightened at 'of said thread to'ride over said projection the end of the body the cover will be further rotated so that said stop 12 will ride over the last rojection 11 and enter the space 11b. In either event, when the cover is screwed securely on the end of the body a stop 12 -will have p beyond one of theprojections 11 and serve to lock thecover on the body and. prevent reverse rotation of the cover spontaneously or accidentally, as fromjars` occurring in trans rtation or handling,
whereby to retain a tig t closure between the cover and the body to prevent the entrance of air and dust into the body or the sifting of contents therefrom. When the cover is unscrewed fromr the body the stop 12 will ride on a lprojection or projections 11 to release-the ocking effect.
1t will, be understood that the cover ilange may be provided with one stop 12 spaced from' a companion thread 10 and the body may be provided with one or more projections 11 to cooperate with said stop 12. -I iid it preferable to provide a stop 12 for each thread 10'and several projections 11 for each thread 8 to assure locking of the covers on the bodies and provide against accidental or spontaneous unscrewng or loosening of the covers from the bodies.
Having now described iny invention what I claim is 1. A container comprising a body having an open end, a cover having a flange to fit around said end, thread means upon't e body and flange to detachably retain the cover on the body, and locking meanfon the body and cover flange distinct from the threadv iin posed sto onthe other part to ride upon and beyond t e projections to cooperate in locking the cover on the body when the'thread means have functioned in the screwing of the cover on the body, the thread means and,
body when the thread means have functioned' in the screwing of the cover on the body.
4. A container comprising a body having an open end, a cover having a flange to fit around. said end, spaced threads upon the body near its open end, outwardlydisposed projections located upon the bodyv at one side of the threads between the ends of the latter, threads upon the cover flange to co- 30 o the thread means with said projections to 'lock the cover on the body when the threads have functioned in screwing the cover on the body.
5. A container as set -forth in claim 4.. in which the projections upon the body are located in planes parallel to andspaced from the adjacent body threads and the stops upon the cover flange are spaced from the adjacent flange threads and located in the angular planes thereof.
.6. A container colnprisino' a body having a flexible open end, a coverliaving a flexible flange to ft around said end, threads upon the od-y near the open end, spaced projections at one side of the threads, and stops upon the flange to cooperate with said projections for locking the cover on the body', the fiexibility of the body end and the flange permitting the stops to ride upon and beyond the projections, said stops being located in ositi'on to pass under the body threads wit out cooperating with the latterfto engage said projections. the thread means cooperating to attach the cover upon the body without cooperating withv the projections and sto s.
g 7E.) A container as set forth inclaim 6, in which the stops are spaced from the adjacent flange threads and are located nearer the inner edge of thel cover flange than the last named threads.
CHARLES J. AULBACH.