US547958A - John mcpherson - Google Patents

Description

(No Model.) y J. MGPHERSON. STORAGE REGEPTACLE.

No. 547,958. Patented Oct. 15, 1895.

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/ i Si @ya UNITED STATES PATENT OFFICE.

JOHN MCPHERSON, OF FINGAL, CANADA.

STORAGE-RECEPTACLE.

SPECIFICATION forming part of Letters Patent No. 547,958, dated October 15, 1895.

Application filed April 16, 1895. Serial No. 545,936. (No model.)

To @ZZ whom it may concern.-

Be it known that I, JOHN McPHERsoN, a citizen of Canada, residing at Fingal, in the county of Elgin and Province of Ontario, Oanada, have invented certain new and useful Improvements in Storage-Receptacles for the Storage of Perishable Goods; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in that class of vessels which are designed for storing and transporting perishable goods; and its novelty will be fully understood from the following description and claims when taken in conjunction with the annexed drawings, in whichp Figure lis a diametrical section of a vessel embodying my invention, the same being illustrated in connection witha pump for exhausting air therefrom. Fig. 2 is a top plan view, partly in section, of the same. Fig. 3 is a detail perspective View of the top of the vessel. Fig. 4 is a perspective viewof the cover removed. Fig. 5 is a section illustrating a modified construction of vessel and a modified device for exhausting air therefrom.

Referring to said drawings, and more particularly to Figs. l to 4 thereof, A indicates the inner chamber of my improved vessel.

B indicates the outer casing, whichis larger in size than the chamber A and is connected thereto by the circular wall a, so as to form the chamber C, surrounding the chamber A and the opening b.

D indicates inwardly-extending lugs, which are arranged at equidistant points on the wall a of the opening b, and E indicates the cover for closing the opening b. This cover E, as better shown in Figs. l and 4, comprises the top plate c, which is designed to rest on the lugs D, and is preferably provided on its under side with a packing-ring cl, the bottom plate e, which has its periphery notched, as indicated by f, to permit of its being passed below the lugsD and to form the projections g, which are preferably provided on their under sides with pieces of packing material h, and are designed to be turned beneath the lugs D, so as to secure the cover on the vessel, and the central bolt t', vwhich extends through the lower and upper plates e c, as shown. Said bolt/t has its upper end threaded,

as shown, and on said upper end is arranged a nutj, through the medium of which the projections g may be drawn upl against the lugs D and the plate c pressed down upon the same, so as to secure an air-tight joint.

F indicates a cock, which communicates with the chamber C, and G indicates an airpump of the ordinary construction, which is designed to be connected with the cock F, as shown in Fig. l. With this air-pump a vacuum or partial vacuum may be created in the chamber C, and when this has been done and the cock F is turned so as to exclude air from the chamber O said chamber will serve to insulate the chamber A from the outer air, and in consequence the contents of said chamber A will be kept at an equal temperature and decay of the same prevented.

The construction of vessel illustrated in Fig. 5 is similar in all respects to that illustrated in Figs. l to 4, except that the cock F is omitted and the cover E is provided with a tube m to permit of the air being exhausted from the ice-chamber K when the same is employed. The air-pump G (illustrated in said Fig. 5) is also similar Ato that shown in Fig. l, except that it is provided with a lateral passage n, communicating with its main central passage p, and a plunger q, arranged in said lateral passage, or any suitable means for forcing plugging material or plugs into the tubes m r to close the same. The lateral passage n of the pump G is designed to contain some suitable plugging material, which might be a plastic substance or fiber, and when the air has been exhausted from the icechamber K such material may be forced by the plunger q into the tube m, so as to hermetically seal the same. This operation is repeated when the air is exhausted from the chamber C, the plugging material in this case being forced into the tube r, communicating with said chamber. The lateral passage n and plunger q of the pump G form no part of my invention and any suitable means may be employed to close the tubes m r after the air is exhausted from the receptacle.

It will be seen from the foregoing that with its many advantages my improved vessel is very cheap, simple, and strong, and it will also IOI) be perceived that with the apparatus described air may be readily exhausted and eX- cluded from the ice-chamber when the same is employed and from the chamber C, so as to promote the preservation of the contents of the chamber A.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. In a storage or transportation vessel such as described, the combination of the vessel body having the circular opening b, and the horizontally-disposed lugs D, arranged at intervals on the vertical wall a, of said opening, and the cover E, comprising the circular top plate c, having packing on its under side and adapted to rest on the upper side of the lugs D, in the opening l), the lower plate e, having the peripheral notches and the projections g, provided with packing on their upper sides and adapted to engage the under side of the lugs D, of the body, a bolt takingthrough the center of the upper and lower plates and connecting the same, and a nut mounted on the upper` end of the bolt whereby the plates c, and e, may be pressed against the upper and lower sides of the lugs D, all substantially as specified.

2. The vessel described consisting 0f the body having the inner chamber A, the outer 3o casing B, provided with tube 7^ and the circular Wall a, connecting the inner chamber A, and casing B, and forming t'ne opening b, and having the horizontally disposed lugs D, arranged at intervals, the ice chamber K, arranged in the center of the chamber A, and the cover E, for closing the chamber A, and ice chamber K, comprising the circular top plate c, having packing on its under side and adapted to rest on the upper side of the lugs D, in the opening b, the lower plate e, having the peripheral notches and the projections g, pro vided with packing on their upper sides and adapted to engage the under side of the lugs D, of the body, a bolt taking through the center of the plates c, and e, and connecting the same, a nut mounted on the upper end of the bolt, and a tube extending through the upper and lower plates and communicating with the ice chamber K, all substantially as specified.

In testimony whereof I affix my signature in presence two witnesses.

JOHN MCPIIERSON. Witnesses:

M. W. SHARON, D. D. LONG.

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