MENTS IN OR RELATING TO JARS AND LIDS APPLICABLE FOR USE IN CONTAINING OR PRESERVING MEAT FRUIT, OR THE LIKE, AND ΤΟ APPARATUS FOR MANUFACTURE OF THE SAME
Year: 1885

page_text: COMPLETE SPECIFICATION.
I, GEORGE GARDNER, of 12 North Hill Street, Liverpool, in the county of
Lancaster, Builder do hereby declare the nature of my said invention for IMPROVE-
MENTS IN OR RELATING TO JARS AND LIDS APPLICABLE FOR USE IN CONTAINING
OR PRESERVING MEAT FRUIT, OR THE LIKE, AND ΤΟ APPARATUS FOR
MANUFACTURE OF THE SAME, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:―
THE
This complete specification is filed on a fresh application and for the date of
actual filing thereof, it is however left after my provisional specification No 10836
of 1884, and is filed within the nine months following the date of that application
so as to prevent the latter being deemed abandoned.
This invention is best described by aid of the accompanying drawings which set
forth
Sheet 1 Figure 1 the hand press used by me in forming the jars. Figures 2
and 3 vertical sections of two moulds for lid, the lid in each case being depicted in
massive block. Figure 4 plan of bottom plate U₁ and Figures 5 and 6 similar
sections of two moulds to form jars fitting said lids, the jars being shown in
massive block. Like letters relate to like parts in all the figures.
.
Referring first to sheet 1, A is a hand lever which by means of link A¹, lever A²
and connecting rod A³ draws down the press spindle C (shown at half stroke in the
drawing) when required. B frame work, C press spindle carried in bearings D D',
so as to be capable of freely sliding perpendicularly therein. E adjustable collar
on press spindle and F spring for raising the press spindle automatically when not
held down by handle A. G core on press spindle hereafter more particularly
described in reference to sheet 2. H mould. I treadle or hand lever supported on
pivot i and used for pressing the jar out of the mould by means of rod J. as more
fully set forth in describing sheet 2 of the drawings.
Referring now to sheet 2-
The four examples on this sheet vary only in details necessary to mould a lid
with an internal screw, Figure 2, a jar screwed to match, Figure 5, and a lid with
external screw and iar to match Figures 3 and 6. In those in th

page_text: to the end of which the core G is attached preferably by means of screw K or in
such a manner as to be easily removable in order that cores differing in contour
may be applied to the same machine or be easily removable for repair. H is the
mould into which the clay to form the article is placed. N is a part of the mould
screwed to the main portion of the mould at O (or in the case of Figure 6, screwed 5
on the spindle screw L being cut thereon for the purpose). This part is supplied
with a screw thread P, which forms the threads of the screw in the clay, the screw
at O is made with the same pitch so that in unscrewing O, P is unscrewed out of
the thread formed in the clay as bereafter described. In Figure 2 this part is
shown in two pieces N and N³, but this is merely for convenience of manufacture, 1
and after these are once screwed together they are firmly locked by lock stud Q.
In Figure 6 where N is screwed to the spindle by screw L, instead of to the
mould a further piece R is required to cover the space left for the jar and prevent
the clay oozing out. Screw Ĺ is shown in all four examples, as both it and K form
part of spindle C,.and the same press is applicable and used indifferently for all
four moulds. In cases however where only moulds and cores such as shown in
Figures 2 or 5 are used, in which it is not required to turn the core round on the
spindle to screw it out of the clay, the screw L can be dispensed with and only
screw K used. The mould H is secured to the table or frame of the press by
lugs M. SS are vent holes to allow the clay to escape when the mould is quite
full. T is a vent peg screwed or otherwise secured into the mould, and withdrawn
after the plunger & has been pressed firmly down, and preparatory to withdrawing
the plunger. U U₁ movable bottom plate. V strengthening piece, or projection on
bottom plate U U¹ W handles or flies of nuts or screwed pieces N or R to turn
them by.
The mode of operation is as follows:
The mould H being placed in position well oiled internally and secured to the
table, the cap N, or in Figure 6 the cap R also oiled or greased is screwed into
place as shown, the mould is then supplied with the requisite amount of nearly dry
clay. The spindle with the plunger G previously oiled or greased and attached
thereto is then firmly pressed down till its flange X rests on N or R as the case
may be. Any surplus clay escapes through holes S. The vent peg T is then
withdrawn, thus admitting air below the plunger which now rises by reason of the
pressure on the spindle of spring F, Figure 1, assisted if necessary by hand. In
the case of Figure 6 however the plunger does not rise being held by piece N, this
latter is therefore turned round till, rising on the screw thread L, it is at the same
time raised out of the thread formed in the clay. The pieces N in Figures 2, 3,
and 5 and piece R in Figure 6 are now unscrewed and taken off, when a push on
treadle or handle I, Figure 1 raises the bottom plate U or U₁ and with it the
formed article out of the mould. The articles are dried and kilned and are then
ready for market. The heads for ease and convenience of screwing or application are
preferably made in star form similar to the contour of the bottom plate U shown
in Figure 4. A ring or washer of rubber or other suitable material fitting between
the flange of the jar and that of the lid is supplied which when the two are screwed
tight forms an air tight joint that can be at once broken and made again. In this
way a jar is provided that can be opened, a portion of the contents used, and it
can be resealed. In preserving meat in the first instance the hot material is placed
in the jar tightly compressed and the lid screwed on tight, but with a vent hole
left open, the jar is then placed in boiling brine, till a temperature is reached
sufficient to kill all putrefactive germs. It is then taken out and when the force
of the escaping steam lessens sufficiently, the vent is tightly closed and the jar put
to cool. If desirable the vent hole is sealed with an air tight wooden vent peg, or
otlier seal, even a ball of rubber or wooden vent peg in a conical hole will do.
The great advantages of my jar are cheapness, and that not being made of meta
it cannot poison the meat. Moreover it can be used to hold the meat whil
portions of the same are consumed from time to time. The jars can be returned
by the consumer and used again.
I

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1st. The manufacture and use, substantially as and for the purposes described,
of earthenware or pressed composition jars and lids, in which a thread is pressed
or moulded on the two parts and the two screwed together with a rubber band, or
its equivalent between.
2nd. The method or process of forming a screw threaded jar or lid of plastic
ware, which consists in forming the mould with a loose screwed piece to form the
thread, which piece has a second and similarly pitched thread, or its equivalent, by
which it is secured to some other part of the mechanism and by unscrewing which
after pressing has been accomplished the mould thread. in the plastic material is
unscrewed from out of the plastic material without any transverse, or other
unnecessary or distorting strain, being brought to bear on the plastic thread.
3rd. The moulding apparatus for moulding jars, lids or the like, substantially as
described and set forth in Figures 2, 3, 5 and 6.
"