US73846A

US73846A - Charles f

Info

Publication number: US73846A
Authority: US
Publication date: 1868-01-28
Anticipated expiration: 1885-01-28

Description

CHARLES F.. SPENCER, OF ROCHESTER., NEW YORK.

Latas maar No. 73,846, ama .fanta-ry ze, 186s.

Ill/ IPROVEIVIE'I IN FRUIT-JARS.

@Ligt rlghnl nicht in in liga; iettetr gnent ma mating ma nf iig time TO ALL' WHOM IT MAY CONCERN:

Be it known that I, CHARLES F. SPENCER, of Rochester, in the county of Monroe, and State of New York',A Y have invented a certain new and useful Improvement in Fruit-Jars; and I do hereby declare that thefollowing is a full and exact description thereof, reference being had to the accompanying drawings, making part of this speeication. i'

Figure 1 is a sectional elevation ot my improved jar.

Figure 2, a perspective view of' the cover detached.

Like letters of reference indicate corresponding parts in both figures. y

My invention consists in thecombination of hinged loops of-the cover, with notched lugs or projections of the jar-neck, whereby the cover` may be fitted and held accurately on the packing-ring, whether cut thick or thin, and-whether the seat for said packing-ring is ground accurately or not. I

In the accompanying/drawings, A indicates the jar, and B the cover. Thejar has nothing` peculiar in its construction, except that on two opposite sides the neck has lugs or projections, g, blown outward, these lugs or projections being provided with series of notches, 6, oneabo'vc anther, as shown. The top of the jar is also ground oil square to receive the packing-ring c, oi rubber. The cover is made of a single piece of sheet metal, struck up, so as to form a projecting flange, dLwhieh rests upon the packing-ring c, and presses into it to seal the jar. On opposite sides, loopsff are hinged to the cover so as to turn up or down; and when the cover is in place on the jar, these loops catch and hold inthe notches b of lugs g.

The great advantages arising from this arrangement consist in the facility with which` the cover can be applied or removed, and the readiness with which it adapts itself'v to packing-rings of'dii'erent thicknesses,rand i any inclination of 'the seats on which the packingrings rest. Packing-rings ofthis kind are cut from rubber tubing, and are liable to'be of diiferent thicknesses. In ordinary jars much vdiiieulty is experienced from' this source, for the reason that the covers cannot he adapted to these diferences. In jars of this kind, also, where the top of the neck is ground oft' to form aseat for the packing-ring, it is found impossible to grind them all square; many 'of them are more or less inclined. Ordinary covers cannot be made to fit these inclined seats, and for. thisreason many jars are found useless. '.lhese two great dithculties are entirely obviated by my improvement. The notches Zw allow the loopsf to be fitted higher or lower to adapt to the thickness of the packingring, or to incline to one sido to fit any incline in the seat at the top oi' thejar for thepacking-ring.

In addition to these advantages the construction is very simple, and the arrangement is cheap, much more so than in those jars where tightening-clamps or screws are employed. 'The' loops, in addition tothe purpose oi' attaching to the jar to hold the cover down, serve, when turned up, as an attachment for a lever, L, for removing the cover from place against the atmospheric pressure.

What I claim as my invention, and desire to secure by Letters Patent,lis

The combination of the hinged loopsfoi' cover B `with the notched lugs g ci'A jar A, for the purpose of adapting to diiferent thicknesses of the packing-rings, and to diiierent inclinations of their seats, the whole arranged as described, and operating in the manner and for the purpose set forth.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

GHAS. F. SPENCER.

v Witnesses:

WM. W. Namensraum, R. F. Oseoon.