Jones and Noequal cold storage doors : fireproof and non-fireproof ... (1913)
Jones Cold Door Co. · Jones Cold Door Co. · leaf 22
he spring, making a wedge action which drawsthe door in tight, preventing absolutely any rebound. The harderthe door is slammed the tighter the fastener will hold it shut.The tendency of the wedge action is always to draw the doortighter and tighter, compressing the gasket, no matter how muchit has… … The cut shows the roller of the spring-projected slide-bolt about toengage the outer bevel of the keeper, which will force the bolt back, com-pressing the spring until the roller passes the nose, when it will be thrustforward, causing the roller to engage the beveled throat of the keeper,making a…
Refrigeration · Special function doors · Cold storage doors
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