Abstract: A magnetic compass comprises: a gimbal mounted direct read card supported on a bearing in the equatorial plane of the compass in a compass bowl; and a housing having a base to which the compass bowl and corrector magnets are mounted; the corrector magnets being positioned above the base beside the bowl for access without moving the compass; means for supporting the corrector magnets located on three axes, one axis parallel to the lubber line and the equatorial plane of the compass in a horizontal orientation of the housing, a second normal to the lubber line and parallel to the equatorial plane and a third normal to the equatorial plane in a horizontal orientation of the housing and parallel to the lubber line and the equatorial plane in a vertical orientation of the housing; said corrector magnets mounted on two of said axes, said second axis and the one of said first and third axes parallel to said lubber line in the horizontal or vertical orientation selected for mounting said compass; the compass card ass

Abstract: There are disclosed herein power tool boring bits having boring depth indicating markings on the shanks thereof. The markings are produced by colored oxiding of substantially the entire shank of the tool followed by selective abrasion of the shank to remove bands of substantially only the thin surface oxide in alternate array with bands of the colored oxide.

Abstract: There is disclosed a planetary gear winch comprising a selectively operable freewheel arrangement therefor. The freewheel arrangement of the invention provides the winch operator with the ability to disengage the winch drum from the planetary gear reduction drive train, under no-load conditions, thereby to allow freewheeling rotation of the winch drum and rapid unwinding of line therefrom.

Abstract: Disclosed herein is a rotary power coupling comprising rotatable spaced-apart driving and driven members and a torque-transmitting coupling plate interposed therebetween. The coupling of the invention is of particular use in those applications wherein it is of value to isolate power train components and/or assemblies from certain operational strains imposed upon the power user. In a planetary gear winch assembly the coupling of the invention is located in the power train between the output of the final planetary gear speed reduction stage and the winch drum.

Abstract: A novel amine-promoted, peroxide-cured polyester composition which can be utilized at low temperatures, e.g. 25.degree. to 50.degree. F., but which will not react at an excessively rapid rate should the amine be added to the curing agent before the curing agent is mixed with the polyester. The preferred system comprises, in addition to the polyester resin and peroxide curing agent, (a) an organoalkanolamine and (b) a hydrated inorganic filler on which the amine is distributed.

Abstract: There is disclosed vertical shaft impeller pump apparatus especially suitable for bilge or other applications where installation space is limited. The pump apparatus, including preferred embodiments thereof, is characterized by high pumping efficiency, long service life, compactness, and flexibility of assembly geometry whereby orientation of the top portion, the discharge means, and the base of the apparatus are variously alignable relative to one another.

Abstract: An insect electrocution device comprising a cage having a high voltage applied thereto and an insect attractant light disposed therein. The insect attractant light is disposed in an arrangement comprising a ring-like, outwardly-facing parabolic reflector and an insect attractant light source disposed substantially within the focus of the reflector. Plural arrangements are used to substantially fill the cage and provide the visual effect of a single band of light of uniform intensity emanating from the entire length thereof.