US276752A - Refrigerator - Google Patents

Description

(No Model.) y J. A. BALDWIN.

` REPRIGBRATOR.

No. 276,7 52.v Y' vPatented May 1, A18:83. i

\ WITNESSBS; f A INVENTOR; 9 l `1` mC/Sm@ f I 'ATTORNEYS UN ATES i PATENT erica.

Jonson BALDWIN or sHELBURNE, VERMONT.

R e Furets RATO R.

To all whom it may concern: l

Be it known that-I, JUDsoN A. BALDWIN: a citizen of the United States, residing at Shelburne, in the'countylof Chittenden and State@ of Vermont, have invented certain new and useful Improvementsin Refrigerators; and I1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inv the art to which it appertains tomake and use the same, reference being had to the accom panyingdrawiugs,and to letters or figures of reference marked thereomwhich form a part of this speci tication.

My invention relates to an improvement in refrigerators; and it consists in the combination of a pivoted cut-off, which is located inthe opening` made in the top of one side ot' theice box, with a connecting-rod which isattached' thereto, and which isprovided with one or more projections, suitable springs'for pressing downward upon the operating-levers, and suitable crank-levers which are operated at their lower ends by the doors of the provision-room,` and whiclicatch at their upper ends overthe operating-rod for the purpose of raising the rod and opening the cut-oli', as will be more fully described hereinafter. y

The object of my invention is to automaticallyT open and close the cut-oft that is placed between the ice-chamber and the provisionroom, so that when the door of the provisionroom is `opened a springactuated lever will instantly cause the cutoff to close, so as to prevent warm air from entering the ice-chamber, and to open the cut-oft' as soon as the door is closed, so as torestore the circulation of air.

In the accompanyingdrawings,in which similar letters ot' reference indicate like parts, Figure l is a perspective of a refrigerator embodying my invention. Fig. 2 is avertical crosssection of the same.

A represents arefrigerator provided with the ice-chamber B in one corner. Through the upper innerv side otl this ice-chamber is made a suitable opening, C, through'which the warm air which has risen to the top of the provisionchamber passes into the ice-chamber. This chamber has an inclined bottom, as shown by dotted lines in Fig. 1, so as to carry off the `water from the melting ice, and leading from this bottom, at one side, is a suitable air due or passage, through which the cold air from the icep `Application filedJ'ariuary15,18E3. (Model.)

I chamber passes down into the provision-chamber in the usual manner. In the upper open- `ing, C, is placed the pivote'd cut-ott D, which isso hung that it eft'ectually closes the opening, except when itis forced open by means of the action of the rod E, whenthe door of the provision-chamber is closed.` The upper end of this rod is fastened to a short connecting rod or link, which is hookedinto an eye in the lower edge of theecut-offD, and the lower end ofthe rod passes through the upper end ot' all of the crank-levers F, which are pivoted inside ofthe provision-chamber. Ifthere is only one door, this rod will pass through only a single crank-lever; but if there are two or more doors the rod will pass through two or more cranklevers, as is here shown. Opposite each door or pair of doors the cranklever F will he pivoted in such a position that when the door is closed it will strike against the lower end of the lever and tilt its upper end upward. Where there are two ormore doors, placedone above the other, the operating-rod will have a suitable projection secured rigidly to it opposite the upper lever, so that when this crank-lever is left free to move its upper end will strike upon the top of the projection, so as to force the operatingrod downward and throughthe rod to close the cut-off. The lower end of the operating-rod is bent orV turned after it passes through the lower one of the crank-levers, so that when the upper end of this crank'lever is forced downward by its spring it will carry the Operating-rod with it. Secured to this operating-rod opposite the upper one of the cranklevers is a suitable projection, upon the top ot' which the upper end ot' the top crank-lever will be made to catch. Secured inside of the provision-chamber at any suitable point is a suitable spring, G, for each operating-lever, and which is made to catch in or against the levers which operate the rod. The free ends of these springs are made to operate the cranklevers, so as to exert a constant downward pressure upon them and keep the levers pressed downward when they are left. free to move. Vhenever one of the doors of the provisiom chamber is opened the spring instantly forces the crank-lever downward, and when the door is closed it strikes against the lower end ofthe crank-lever and forces its upper end upward for thepurpose of movin gthe operating-rcd up- 'ICO ' ward at the same time, and thus operate the cutoft'. These projections are fastened to the operating-rod below each crank-lever, except the bottom one, Where the end of the rod is bent. All of the crank-levers elevate the rod E by frictional contact, so that when any one of the levers is moved the rod will be made to elevate jections on the rod opposite the door, so as tov force it downward, when the rod will move through the other operating-levers, and thus operate the cut-off.

Instead of the springs here shown, weights may be used for the same purpose. Each weight will then have a hole made through it and be passed over the rod E, and the ends of the crank-levers F will then be `made to catch under the weights and raise them upward. l

What I claim, and desire to secure by Letters Patent, is

In a refrigerator, the combination of the doors of the provision-chamber, the ice-chamber B, a cut-off, D, a connecting-rod, E, attached thereto, and which passes down through the upper end of each of the crank-levers F, a projection on the rod below the upper end of each lever, and springs Gr, which havetheir free ends attached directly to the crank-levers F, so as to keep their upper ends forced constantly downward when they are left free to move, substantially as shown and described.

In testimony whereofI do affix my signature 4o in presence of two witnesses.

JUDSON A. BALDWIN.

'Vitnesses:

E. R. POWELL, CHARLES E. ALLEN.

Images