摘要:
A cradle and a method for adapting a circuit breaker for mounting in a switchgear cabinet having a bus bar system. The cradle includes a frame to which a racking apparatus and a locking apparatus are mounted. The racking apparatus is operable to move the cradle into and out of electrical connection with the bus bar system. The locking apparatus has a first operating state, wherein the locking apparatus prevents the circuit breaker from being disposed in the frame and allows the racking apparatus to operate, and a second operating state, wherein the locking apparatus allows the circuit breaker to be disposed in the frame and prevents the racking apparatus from operating.
摘要:
A cradle and a method for adapting a circuit breaker for mounting in a switchgear cabinet having a bus bar system. The cradle includes a frame to which a racking apparatus and a locking apparatus are mounted. The racking apparatus is operable to move the cradle into and out of electrical connection with the bus bar system. The locking apparatus has a first operating state, wherein the locking apparatus prevents the circuit breaker from being disposed in the frame and allows the racking apparatus to operate, and a second operating state, wherein the locking apparatus allows the circuit breaker to be disposed in the frame and prevents the racking apparatus from operating.
摘要:
A process for preserving green colored plant tissues and in particular coniferous needles, holly and low fiber leaves such as mosses, lichens and ferns in which selected leaves are immersed in a solution comprising (by volume) 35-45% water, 20-30% 2-propanol, 5-12% propionic acid, 5-10% sulphurous acid, 5-10% formalin, 2.5-5% formic acid, 1-5% ethylene glycol, and optionally minor amounts of compounds selected from the group consisting of cupric sulphate, cupric chloride, 20-20-20 fertilizer, citric acid, DBE, magnesium sulphate, acetic acid, cupric acetate, cupric nitrate, sodium phosphate, sodium sulfite, butylated hydroxytolulene and glycerol, for a sufficient time to exchange the naturally occurring water in the tissues with the "chemical water" of the solution and thereby permanently retain and biologically fix the green color of the leaves.
摘要:
A MOC operator structure for a vacuum circuit breaker includes a cam coupled to an operating shaft of the circuit breaker, a follower in engagement with the cam, a first lever coupled with the follower, free-floating spring structure associated with the first lever, a second lever, a linkage structure coupled with the second lever and constructed and arranged to be associated with a breaker-panel interface for moving auxiliary switches, and movable cable structure operatively coupled between the first and second levers. The first lever and spring structure are configured such that when the contacts are closed, movement of the cam via the operating shaft drives the first lever to a maximum position compressing the spring structure, prior to any movement of the cable structure, and wherein force of the spring structure moves the cable structure and thus the second lever, causing movement of the linkage structure.
摘要:
A process for preserving green colored plant tissues while retaining the natural green color thereof, in which the tissues are immersed in a solution comprising: water, at least one monohydric alcohol, at least one preservative component selected from the group comprising lower carboxylic acids, di and tri hydric alcohols, and sufficient buffering and mordant reagents to control the pH and osmolality of said solution, so as to permanently retain said green color in said tissues. In a preferred embodiment the treated tissue is subjected to a secondary treatment in a holding solution comprising glycerin and water.
摘要:
A solution and process for preserving Douglas Fir needles while preventing shedding thereof from the branch to which they are naturally attached, producing a natural looking product suitable for display purposes. The branches, with attached needles, are immersed in a solution comprising (in amounts per liter of solution):300-500 ml water200-300 ml ethyl alcohol0-75 ml ethylene glycol50-75 ml propionic acid0-20 ml glycerin100-150 ml formalin50-175 ml propylene glycol40-75 gms citric acid1-7 gms magnesium sulphate15-25 gms cupric sulphate5-10 gms sodium sulphite0-10 gms seaweed extract,for a period of up to about two weeks and subsequently air dried.
摘要:
An agricultural grain storage or feed tank including a body with a roof having an upper inlet opening is provided with a roof cap assembly which includes an elongated and vertically extending control rod which is vertically and pivotably movable with respect to the body of the tank whereby a cap connected to the control rod may be selectively moved remotely from the opening by raising the control rod and thereafter swinging the cap relative to the opening. The opening is reinforced by a reinforcing centering ring which is selectively mounted to the exterior of the roof of the tank and which includes a plurality of support rods on which the cap is normally seated so as to create an air passageway into the inlet opening. In the preferred embodiment, the body of the tank is corrugated and is supported by legs having corrugated sections which interfit with the body of the tank.
摘要:
A process for preserving green colored plant tissues while retaining the natural green color thereof, in which the tissues are immersed in a relatively inexpensive solution comprising up to about 90% water, at least one monohydric alcohol, at least one preservative component such as sulphurous acid, and sufficient buffering and mordant reagents such as citric acid and cupric salts such as cupric chloride and cupric sulphate, to control the pH and osmolality of the solution and so as to permanently retain the natural green color in the tissues.
摘要:
A method for preparing a naturally colored and flexible freeze dried animal specimen for study or display purposes, in which a lubricating agent is injected into the major joints and the specimen is wrapped in a moistened cheese cloth prior to freezing and drying. After freeze drying the specimen is soaked in an organic solvent to remove substantially all of the lipids from adipose tissue and bone marrow therein and then softened and manipulated to restore substantially natural movement thereto. A polymerizable silicone rubber may be rubbed into the dried and softened tissue to replace lost bulk and to seal the tissue against reabsorption of water, so that the dried specimen can be stored indefinitely in an open atmosphere.
摘要:
A MOC operator structure for a vacuum circuit breaker includes a cam coupled to an operating shaft of the circuit breaker, a follower in engagement with the cam, a first lever coupled with the follower, free-floating spring structure associated with the first lever, a second lever, a linkage structure coupled with the second lever and constructed and arranged to be associated with a breaker-panel interface for moving auxiliary switches, and movable cable structure operatively coupled between the first and second levers. The first lever and spring structure are configured such that when the contacts are closed, movement of the cam via the operating shaft drives the first lever to a maximum position compressing the spring structure, prior to any movement of the cable structure, and wherein force of the spring structure moves the cable structure and thus the second lever, causing movement of the linkage structure.