Abstract: A strong white ceramic composition and method of making the same wherein said composition is characterized by an average coefficient of thermal expansion over the range of 25.degree. C. to 500.degree. C. ("Proposed American National Standards Institute/American Dental Association Specification No. 38.1 For Porcelain-Alloy Systems") of between 14 to 16.times.10.sup.-6 /.degree.C. and a transverse strength of about 18,000 psi or even greater. The ceramic composition comprises about 40 to 60% by weight crystalline magnesium oxide particles (e.g., 74 .mu.m ) dispersed in a modified silicate glass containing at least 3% by weight of dissolved ZrO.sub.2, TiO.sub.2 or mixtures thereof and is made by firing a powdered mixture of MgO.sub.2 and modified silicate glass at about 1150.degree. C. for sufficient time to produce a fine dispersion of forsterite (Mg.sub.2 SiO.sub.4) in the continuous glass matrix phase along with the crystalline magnesia particles.

Abstract: An electrically heated wok having a bowl of substantial thickness preferably formed from aluminium by gravity or sand casting and having an electrical heating element on the underside thereof, the bowl being supported on an annular skirt surrounding the heating element, the bowl being tiltable in relation to the skirt and being guided by a guide member associated with the skirt and with which portions of the bowl interact, a locking lever being provided for engagement with detents on the skirt so that the bowl can be fixed in a number of predetermined tilted positions in relation to the skirt.

Abstract: Apparatus for measuring the sensory condition of the skin. The apparatus includes means for repeatably projecting and retracting a pair of probes and for repeatably varying the separation between the probes so that the Von Frey and Weber two point discrimination tests may be performed objectively. The apparatus also includes means for measuring skin temperature and electrical resistance with a unitary wand and for measuring the pinch and grip forces which may be applied by the fingers and hand.

Abstract: An electric fry pan in which the pan is formed from cast iron to the underside of which a heat sink of aluminium is secured by mechanical means, the heat sink making close physical contact with a major portion of the underside of the pan. The electric heater element is associated with the heat sink and has connected to it an electrical connector by means of which the heater element may be connected to an electricity supply.

Abstract: A low cost self-contained, direct-mail advertising booklet, particularly adapted to be a self-mailer type of booklet. A plurality of continuous strips or sheets of paper-like material are superposed and attached together to form a series of booklets in a continuous web. Personalized information such as a name, address, etc. is applied to a portion of the web or to a card or sheet or the like which is attached to the web. The web is folded so that the personalized information is used as a mailing address for the booklet. Separation of the booklet from the web may occur before or after folding occurs. The portion of each booklet which carries the personalized information may be readily removed from other portions of the booklet and placed in the mail by the receiver of the booklet to indicate his acceptance of an offer or the like set forth in the booklet.

Abstract: A low cost self-contained, direct-mail advertising booklet, particularly adapted to be a self-mailer type of booklet. A plurality of continuous strips or sheets of paper-like material are superposed and attached together to form a series of booklets in a continuous web. Personalized information such as a name, address, etc. is applied to a portion of the web or to a card or sheet or the like which is attached to the web. The web is folded so that the personalized information is used as a mailing address for the booklet. Separation of the booklet from the web may occur before or after folding occurs. The portion of each booklet which carries the personalized information may be readily removed from other portions of the booklet and placed in the mail by the receiver of the booklet to indicate his acceptance of an offer or the like set forth in the booklet.

Abstract: An improved sprinkler for a fire protection sprinkler system in which the sprinkler opens to discharge water at one temperature and closes to stop the flow of water at a lower temperature. A pilot valve is actuated by a bimetal disc which also resiliently biases the pilot valve in a closed position. The bimetal disc has a snap action resulting in better control of the "on" and "off" temperatures of the sprinkler. A thermal delay for closing is obtained by the hysteresis which is designed into the bimetal disc.