US1075125A - Jar-cap. - Google Patents

Description

E. D. SGHMITT.

JAR GAP.

APPLIGATION FILEI) MAY 10, 1912.

L75,1 $51 Patented 001. 7, 1913.

3 SHEETSSHEET l1 E. D. SCHMITT.

JAR GAP.

APPLICATION FILED MAY 10, 1912.

00 1 9 1 1 D- 0 0 d e t n e t a P 3 SHEETSSHEET 2.

B. D. SCHMITT.

JAR CAP.

APPLICATION FILE-D MAY 10, 1912.

1,75,1 5 Patented 0011.7, 1913.

3 SHEETS-SHEET 3.

"lJNllTElD %TAT ?E% FATENT @FFEQE EDWARD D. SGHMIT'E. 0F BALTHEOBE. MARYLAND, ASIGNOR T0 BUBE FOOD IPBOCESS COMIEANY. 0F BAL'ZIIM' RE. MARYLAND,

A CORPORATION 01'! MARYLAND.

area-oer.

Specification of Letters Patent.

ll atentedfict. t, 12913.

( Applicationfiled may 19, 191-2. Serial No. 696,528.

To all whom it may concern: I

Be it known that l, Enwenn D; SCHMITT, a citizen of the United States, nesiding at Baltimore city, State of Maryland, have invented certain new and useful improvements in Jar-Gaps, of which the following is a specification,

This inventionrelates in jar caps.

The object of the invention is to provide a cap adapted for use in sealing or capping jars in which food products'or other con? tents are cooked, after being hermetically sealed. This necessitates the use of a hard metal cap possessing such rigidity as will enable the flange of the cap to be tightly crimped or bent into locking engagement with the locking shoulder on the exterinn of the ar.

T- e principal object of the present invention is to rovide a construction wherein the cap or closure may be tightly locked to the jar, so as to hermetically seal the same. and to provide with such construction, a means whereby the seal lock may be broken, so that the cap may thereafter be readily removed by hand.

The invention consists in the main, in making the closure in two parts, one a closing member, and the other a securing member or rim, which looks the closingm in place and in providingthe securing. naemor rim with an opening lever which no operates with a peculiar construction of rim whereby the lever may be readily manipulated to break the seal so that the rim may to improvements thereafter be removed to reach the contents of the vessel.

The many advantages will become apparent in following doscri tion.

Referring to t e drawings,-Figure 1 is a perspective view showing the cap. applied. Fig. 2 is a similar View, looking at the cap from a difierent direction. .Fi g. 3-. is a perspective view showing the opening lever in about the position it would assume at the beginning of the twisting operation. Fig. 4 is a perspective view showing the scanning rim torn almost through. Fig. 5 is a View showingthe opening lover twisted entirely out of the'secur'ing rim, and the rim in position to be sprung ed the jar. Fig. 6 is a vertical sectional view of the cap, applied of" the invention the. course of the to the upper portion of a jar, and Fig. 7 is fit one side of the channel portion and in position. on

a group view showing the various parts of the cap, the closingv member being slightly broken away to more clearly show its shape in cross section.

Referring to the drawings, the numeral 1 designates the jar, provided interiorly and adjacent to the lip, with an inclined annular surface 2, a rounding head 3 and an exterior locking shoulder .4.

The numeral 5 designates the cap, which comprises a securing rim 6, a closing memher 7' and a gasket 8 of rubber or other compressible material. The cap is made preferably of tin of heavy weight, and the securing rim is provided with a depending flange -9, adapted to be crimped at intervals into looking contact with the locking shoulder 4:, as indicated at 10. The closing member is formed with a solid top 11, and its edge is bent upwardly, laterally, and down ward, to form an annular channel 12 for the reception of the gasket 8. The inner wall 13 of the channel inclines slightly inwardly from the upper edge of the channel portion, asv shown more clearly in Figs. 6 and 7, so that when this member is in position on the jar it will rest snugly against the inclined surface 2 thereof, as shown. in

The enter wall 14: of the channel is of such length as to properly confine the gasket 8 and the length oifi the wall of course maybe varie as the exigencies of the case may require, to accommodate gaskets of different thicknesses.

The securing rim 6 is fonmed with an annulaa? channel 15, which, in cross section, conforms-generally to the upper part of the channel portion of the closin member, so that when the rim is forced own over the closing member, the inner wall 116 of the channel portion of the rim will bear tightly against the Wall 13 of the closing member.

of the I provide an integral opening lever 17, which extends toward the center of the closing member when the parts are assembled the ar. The inner wall of the. channel portion 1 f the rim adjacent to the base of the lever may be notched out, providing notches 18, which extend almost to the top of the wall, as shown clearly in Figs. 2, 3 and 7. These notches terminate in points 19 and extend u ward ly toward each other, for a purpose. which Wlll become apparent in the description of the operation of removing the cap. The upper surface of the rim is provided with two cutout portions 20 the notches preferably having straight parallel sides and terminating in points 21. These notches are inside the points of termination of the notches 18,

Q 1' and the outer wall of the channel portion of the securing rim is further provided with two substantially vertical notches 22, which is an integral structure, well adapted for permanently holding the closing member in place, and in no way interfering with the necessary crimping of the flange of the securing rim, while at the same tlme, a structure is provided wherein, by the manipulation of the lever 17, a considerable portion of the securing rim may be torn away, thus leaving the rim in such condition that it can be readily sprung apart and the whole seal removed.

In operation, the lever is gripped, say by the thumb and fore-finger, lifted and pushed towardthe periphery of the cap and when the back of the lever, near the base, engages the point a, as a fulcrum (better shown in Fig. 3), a tearing twist will result, which will twist the metal at the point 12 until it tears into the notches 20. Further movement of the lever will bring it to a position wherein thepoint a will act as a fulcrum for the'next operation which will be a twisting tear that will carry thelever and the integral portion of the rim, into the notches '22, after having ruptured the'rim at the point 03 and the final downward twist will break the lever and its integral part of the rim entirely out, leaving the cap in the condition as shown in Fig. 5. In this condition, obviously, the ruptured ends of the rim need only be forced apart sufliciently to disengage the crimped portion of the flange 9, from the locking shoulder of the jar, when the jar cap may be removed.

.The tearing out of the rim leaves the seal in a condition where it may be readily removed by a slight further manual operation. The construction is one wherein the whole cap may be replaced, less of course the torn away ortion, but this is found sufficientto ma e a very tight temporary seal which may be highly advantageous for use when only a part of the contents of the bottle or jar has been used, and it is desired to preserve or keep fresh the remaining or' unused portion.

In re-applying the cap for the temporary seal, it will be at once seen that when the parts are put in the position shown in Fig. 5, a downward pressure upon the whole cap will force it back into place upon the jar, due to the wedging tendency of the engagement between the inner surface of the inner wall of the securing rim with the surface of the inner wall of the closing member, thereby producing a temporary seal, the tightness of which will be in proportion to the pressure a V plied.

I have ound in practice that it is a very different matter, if not entirely impossible to tear tin of heavy weight, with a straight tear, and I have therefore contrived the various notches and cut out portions in the securing rim, so that suflicient leverage is obtained to twist the solid portions of the rim apart between the notches, producing, as above su gested, a twisting tear, the effect of whic will be readily understood and appreciated by those skilled in the art. I refer to stiffen and strengthen the opening ever by providing a rib 24:, which is pressed or indented from the under side to the upper side of the lever.

Having thus described my invention, what I claim is:

1. A jar cap having a closing member formed with a gasket holding channel.

adapted to receive the lip of'the jar, a securin the c annel portion of the closlng member,

said securing rim being provided with an opening lever integral with the lower edge of the inner wall of the channel of the securing rim, by which a part of the securing rim may be twisted off to unlockthe seal.

run formed with a channel to receive 2. A jar cap having a closing member formed with a gasket holding channel to re- .ceive the lip of the jar and a securingrim formed with a gasket holding channel, the

inner wall of which is inclined inwardly, and adapted to receive the lip of the jar, and a securing rim formed with a channel, the outer wall of which is extended to-form a locking flange and the inner wall inclined to fit the inner inclined wall of the closing member, and an opening leverintegral with the lower edge of the inner wall of the securing rim, by which part of the securing rim may be twisted off to unlock the seal.

4;. A jar. cap havin a closing member formed with a gasket olding channel, the inner wall of which is inclined inwardly and adapted to receive the lip of the jar,

enol securing rim torme with 2:, channel, the enter well oi" which is extended to term a locking flange e116; the inner well inclined to fit the inner well oi the closing member, said rim being provided with notches between which the metal of the rim is adapted to he tern. and an opening lever integral with the lower edge of the inner well cf the securing rim, whereby the rim between the notches may be twiste apart for unlocking purpcse 5, A closure fer fiers or bottles comprising s closing member having: an inner him well, a securing rim fitting over the en.- nulsr well. of ssi-cl closing member, and an opening lever integral with the lower of the ennuler well of the securing rim, end extending across the upper face of the closing member, wherewith e part of the securing" rim may be twisted off to unlock the sea-L 6 A closure for jars or bottles compris ing a closing member having an inner annuler wall, asecuring rim fitting over the en nular well of said closing member and provided with notches and. an opening lever integral with the lcwer edge of the inner wall of the securing" rim enrolv extending across the upper face of the closing member whereby the metal oi the rim between the notches may be twisted apart for unlocking purposes.

7. it. closure fer jars or bottles comprising a closing member having an inner ennuler well e securing rim. fitting over the nuler w l of said. closing member, seiai rim being viaied with notches, encl estifienegi opening lever integral with the lower edge of the inner ennulsr well of the securing member end extemling across the upper face of the closing men'ihe-r whereby the metal of the securing rim between the notches may be tWiStQQi apart for unlocking purposes.

7 8. In. e jar closure, the combination with a bottle er jar, her ing en exterior locking surfsee. e esp comprising at closing member having an inner annular well e securing rim over the inner annular well of the closing member and having its outer locking engagement or er well ezrtencled to form. with locking surface oi the bottle and its inner wall in engagement with the inner wall. of the closing member said securing member being provided with. notches between which the metal of the securing-rim is adepte; to be twisted; apart, said rim being provided with an opening lever integral with the lower edge of the inner wall of the securin rim whereby the metal between the DOtfilGS may be twisted apart for unlocking; purposes In testimony whereof. I afdx my signature in presence 0 two witnesses.

J'Airns L. Gnewronn, TITIAN W. Jonnson.

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