US 1075834 A
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Description (OCR text may contain errors)
SAINT VRAIN LE SIEUR.
APPLICATION FILED Jun, 1911. RENEWED FEB.18, 1913.
LW5E3QU Patented 0013.14, 1913.
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SZ-VLe 6224/- 7K KDTORNE Y.
SAINT vnAIN Ln sInUn, or EAST ST. LOUIS, ILLINOIS, AssIeNon TO THE LE SIEUR vacuum CAN MANUFACTURING COMPANY, on EAST ST. LOUIS, ILLINOIS. A. com
PORATION or ILLINOIS.
T 0 all whom it may concern Be it known that 1, SAINT VRAIN Ln Sinus, citizen of the United States, residing at East St. Louis, in the county of St. Clair and State of Illinois, have invented certain new and useful Improvements in Milk-Cans, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.
My invention has relation to improvements in milk-cans; and it consists in the novel construction of can more fully set forth in the specification and pointed out in the claim.-
In the drawings, Figure 1 is a half vertical section and half elevation of a milk-can showing my invention applied thereto; Fig.
2 is an elevation of the outer cover detached; Fig. 3 1s a bottom plan with parts broken away; and Fig. f is a horizontal section on Referring to the drawings, 1 represents the outer section or member of the can, and
l the inner section, being thus ractically a can within a can, the two sections being separated by a space a from which the air may be exhausted. The upper ends of the necks n and n of the respective sections are held apart by a ring 2 of asbestos or other heat non-conducting material, which is (in any common and well known manner) impregnated with paraiiin wax and compressed and hardened to render the said ring impervious to air, after which said ring is cemented securely within said space, and thus seals the space a, at that point. Distributed along the bottom of the inner can or section 1 are spacing angle brackets 3 with their legs secured respectively to the bottom of the section 1' and to the side walls of the outer section 1, a strip or layer of asbestos or other heat nonconducting material 4 beinterposed between the wall of the sec- Specification of Letters Patent.
Patented Get. 14, 1913.
Renewed February 18,1913. S erial No. 749,279.
tion 1 and the bracket legs. The opening of the neck of the double can is closed by a metal lid ohaving an upper marginal flange Greeting on the upper edge of the double neck and extending over the ring 2. The lid 5 is preferably dished and is provided with a rib 7 disposed in the plane of the flange 6, said rib serving as a handle. The lid 5 is protected by an outer cover 8 provided with a depending flange or rim 9, said rim having formed therein at diametrically opposite points the angular recesses 10, the legs of which cooperate with studs 11 disposed on the outer surface of the neck a By passing the rim 9 of the cover over the neck a in such a way as tocause the studs 11 to enter the vertical legs of the recesses, and then givin the cover a partial rotation so as to cause t e studs to enter the horizontal legs of the recesses, the cover will be effectively locked. This locking means however, is not new nor is the same claimed herein specifically. The cover is provided with an asbestos or equivalentlayer 12 of heat-non-conducting material as shown.
The can in the present case has a raised bottom, the outer layer (or bottom of the outer canlbeing provided with an outwardlyopening check-valve V, preferably of the hinged Variety, the same being surrounded by a screw-threaded nipple 13 to which the hose (not shown) leading from any suitable suction pump or exhauster may be temporari'ly attached to exhaust the air from the space a between the two sections of the can. Once the air is exhausted, the nipple 13 is, in a common and well known manner, covered over with a seal of soft solder 14 to protect the valve from injury. The solder may be removed at any time should occasion arise to exhaust the air on account of leaks. The rarefied air or vacuum in the spacea hein a non-conductor of heat, and the asbestos layers 4 and 12 being likewise non-conductors, it follows that changes in temperature of the outside air can not affect the contents of the can, and thus the milk remains sweet and fresh until disposed of. The solder 14: when in position, does not project beyond the plane of the bottom edge of the can, and thus can not be broken off inthe handlin of the can. Though detemperatures. The purpose of the lid 5 is to prevent the milk or cream from saturating the asbestos lining of the outer cover.
I n lieu of the brackets 3, or in conjunction with the same, I may employ asbestos spacing plugs 15 between the side walls of the two can sections. In' the event that the spacers 3'are dispensed with, and the members 15 are used alone, care should be taken to provide a tight fit between them and the walls of the sections 1, 1, so that the inner section shall not drop to the bottom of the outer section. Obviously, the bottom of the outer section is seamed to the walls of said section, after the inner member 1 is in its proper position and otherwise secured to the outer section.
Having described my invention, what I clalm 1s:-
A milk-can comprising an outer section or member, an inner section spaced from the outer section, brackets projecting from the bott0mof the inner section and engaging the outer section, strips of heat-non conducting material interposed between the brackets and the inner surface of the outer can-section, a neck for each section, a sealing ring fixed. securely in the space between the ends of the neck portions, an outer cover for the necks provided with a layer of heat-nonconuucting material, and means for connectins; the space between the sections with. a suitable vacuum pump.
In testimony whereof I aflix my signature, in presence of two witnesses.
SAINT VltAIN LE SIEUR.
lVitnesses EMiL STAREK, J 0s. A. MICHEL.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.