US1382051A - Lining for jar-caps and method of sealing jars - Google Patents

Description

E. BEAVERS AND W. A. WEBBEH.

LINING FOR JAR CAPS AND METHOD oF sEALlNG JARS.

Patented June 21, 1921.

APPLICATION FILED JUNE 30,1919.

@Moving WILLIAM A. WEBBER, citizens of the United .A

f UNITE-D .STATES P.A-*rENjrv OFFICE.

ELMEn. BEAvEns, or WALTEAM, AND WJLLLIAMA.` wEisBER, or warnnrown;

MASSACIITIIJ'SETTS,l ASSIGNOBS T0 SANI-TITE CAP COMPANY, MASSACHUSETTS, A CORPORATION 0F or izos'ci'on',4 MASSACHUSETTS. f

LI'NING FOR T AR-CALPS AND METHOD 0]?*Sll'iALIIsl'Gt JARS.

To aZZ- whom t mag/cantera.' i

Be it known that we, ELMER BEAvERs and States of America, Waltham, the latter the county of Middlesex land State of Mas-` sachusetts, have invented new and useful Improvements in Linings for Jar-Caps and Methods-of Sealing Jars, of which the following is a specification. i l

The object of the invention is to provide an inexpensive and eiicient lining for the caps of fruit jars and similar receptacles which shall be replaceable or renewable after each use of the jar or container, which shall the former residing at l ei'ectually prevent contact between the contents of the jar and the metal of the cap, which shall eilectually prevent the escape of liquid or other contents ofthe jar, and which shall constitute a hermetic sealing agent for the joint between the cap and the jar s0 'as to prevent the entrance of air.

In the present practice it is common to use jar caps or covers having permanent linings of non-corrosive material such as porcelain or the like depending upon a rubber illustrated are of jar to exclude air after the jar .has` been closed, but not only is there anelement of uncertainty, with regard to the eiiiciency vof the air seal provided by the rubber gasket, but owing to the fact that the porcelain or other lining of the cap does not seat upon and form a moisture proof joint with the 'neckofthe jar, the said liningto become more or less loose from the metal of the cap, the liquid contentsv of the jar `finding their way to the metal and owing to the acid content thereof in the event of fruit or vegetables constituting thel contents of the jan-there is at once induced a reaction resulting in a more or less injurious compound or poison Vwhich affects the contents of the jar and the least injurious efect of this contact and contamination is tto cause the deterioration or de- It is the object of this invention to rovide a lining forpreventing contact un er any f' circumstances ofthe contents liquid or otherwise of the jar with the metal'or other 1naspecification of Letters rama. Patented Applicationled June 80, 1919. Serial No. 307,835.

at Watertown, both 'in' portion, as well be resorted to within the scope of the claims Aseating gasket l2 for and there is a tendency for' June 21, 1921;

terial constituting the cover and at the same 'time to provide a I may be substituted for that afforded by the rubber gasket, so as to'positively exclude air from the interior of the jar after it has been closed, so as to prevent the deterioration of the contents by reason of oxidation and with this object in View the invention c onsists in a construction and combination of parts hereinafter specifically described, it being understood that changes in form as details of materials, may

without departingfrom the principles involved. f

In the drawing.: v Figure 1 is a sectional'view ofa jarand cover having cover lining and sealing means embodying the invention applied in the operative position thereto.

Fig. 2 1s a .slmilar view showing-y the cover and the related parts or elementsof the sealing and lining means separated from, the jar in the relation which they occupy when muse. The jar l0 and screw cap or cover ll as the conventional forms now 1n common use in preserving fruits and vegetables by either the steam,

with the usual rubber the contact of the lower edge of the lflange orring 13 of the cover as in the ordinary practice, although the use of such gasket is unnecessary under ordinary circumstances when the jars are provided with the vcover lining and s ealing means constituting the subject matter o-thls invention.

Disposed upon the jar being provided mouth. ofthe jar and adapted to r be seated thereon immediately. after the flllingiof the receptacle isa waxed or paraiiined paper disk 14 having a slightly seal which supplements ory sterilizing or cold packed methods,.the shoulder of the downturned peripheral flange or lip-15, and

seated upon this disk is a second -disk of wax or paraiiin or of a soft'onspong'y vehicle such as blotting paperor the like 'impregnated or Saturated withwax or parain underV such conditions as to readily liberate the latter upon the application-of a moderate degree of heat so that ifthe contents of the jar 'areA packed in a hot state the disks' being arranged as described having and cover screwed into place, the hat Of the cap.

and .will cause I hanging lip of the protecting `but it is the purpose the contents of the jar will soften the wax or paraffin in the upper or distributing disk the same to flofw down over the lip of the inner or protecting disk and into the space between the flange of the cover and the neck of the jar or between the threads by which said parts are connected so as to constitute a hermetic seal. The overdisk serves to prevent the wax or para from running into the jar and directsJ it to the outside of the neck where Vit vis disposed to constitute an effective seal. The heat also serves to soften the wax or paraffin with which the base or body of the protecting disk is formed, so that a jointure of the distributing and protecting disks is effected and the portion of the paraffin which flows outward over the peripheral lip of. the protecting disk'and into contact with the surface of the jar neck below the same, practically form's -in connection Kwith the amalgamated 'disks a complete sealing cap which to all intents and purposes is partxof the jar neck and retains such condition and function so long as the temperature to which the jar is exposed is below the melting point of the par- Obviously in the removal of the cap or cover from the jar/the seal is broken and the utility of the sealing means is destroyed, to use the indicated sealing means only once, so that a new and sterile set. of sealing elements may be employed in each subsequent use of the jar.

If the contents of thejar are prepared under the cold packed process or method it is necessary simply to dash hot water upon the cap after sealing the same on the jar to cause the distributing disk to soften sufficiently to form the seal as above described.

From the above description it will now be clear that the disk 16 impregnated with sufficient paraihn vtol flow into and close the joint between the skirt .of the cap 11 and the neck of the jar as well as to seal the joint between said disk 16 and the chine of the jar mouth, is the essential and important feature of our invention. The disk 14 vis not an essential element and may, if desired, be,

and sometimes is, dispensed with. It 'has been common heretofore tol insert a paraffined disk wlthin the cap of a fruit jar or iwith shellac, varnish or the like.

like container, but such disks `have only, heretofore, been provided with enough paraffin to render` them impervious to the liquid contents of the jar or otherl container. In

other words it has heretofore only been the practice to render the paper disk liquid proof by paraffiningwthe same or coating it So far as we know we are the first to provide a disk 16 of paper or other suitable fibrous material which isv impregnated or saturated with sucha quantity of paraffin that when the parafiin is melted by the heat from the contents of the jar, or from any other source, not only is the joint between the disk 16 and the chine of the neck of the jar perfectly closed and sealedbut the paraffin from the disk also flows down into the joint between the threaded skirt of the jar cap and the neck of the jar.

The invention having been described, what is claimed as new and useful is:

1. As a new article of manufacture a disk of sheet material adapted tol beused within the` cap or top of a fruit jar or the like, said disk being coated with a quantity of parafiin or the like sufficient to flow into and close the joint between the skirt of the jar cap and the neck of the jar when heat is applied thereto.

2. As a new articlebf manufacture a disk of fibrous material adapted to be used withinthe cap or ton of a fruit jar or the like, said disk being impregnated with a quantity of paraliin or the like suflicient to flow into and close the joint between the skirt of the jar cap and the neck of the jar when heat is applied thereto.

3. The method the like which consists in first filling the jar, then applying the cap of the jar to the latter with a paraffin coated disk of sheet material within said cap and thereafter utilizing heat to melt the paraffin carried by the disk and causing lthe paraffin to flow downwardly around the neck of the jar or the"like into the joint between said neck and the skirt of the cap. i

ln testimony whereof we afiix our signaj tures.

nanna BEAVER-s.

LLiAM A. Wannen.

of sealing fruit jars and

Images