Abstract: A plate for covering a drill hole in a skull cap and for fixing a cranial bone cover comprises a plurality of vanes (16a-16e) extending radially with respect to a center (12) and slots (20a-20e) between the vanes. For receiving bone screws holes (18a-18e) are provided in the respective region of the outer periphery of the vanes.

Abstract: An apparatus for maintaining a patient's visual fixation and centration while marking the patient's cornea comprises a housing, a light source axially aligned and integral to the housing to maintain the patient's visual fixation and centration while the cornea is marked with the light source acting as a point source of light and enabling the patient to see a shadow image of the patient's pupil, and means for marking the cornea which are integral to the housing and positioned such that the light source and means for marking are axially aligned. A method for maintaining a patient's visual fixation and centration while marking the cornea employs the apparatus in such a manner that the patient looks directly at the center of the image emanating from the illuminated light source, which is a shadow image of the patient's pupil, and the means for marking are then employed to place a mark on the patient's cornea.

Abstract: An improved mausoleum includes a support frame made of fiberglass structural members and a plurality of sealed fiberglass caskets which are proof against deterioration. The mausoleum according to the invention eliminates the need for venting and drainage, greatly simplifies construction of the mausoleum, and reduces funeral expenses. In preferred embodiments, each of the fiberglass caskets has a pair of central lateral flanges, and the support structure includes a plurality of pairs of parallel rails made of fiberglass spaced apart so that the caskets can be inserted between the rails and supported thereon by the central lateral flanges of each casket.

Abstract: A foot bath including a bath body for containing hot water, in which a foot is to be inserted, the bath body having a cover having an opening therein. A ceramic layer and a heater are provided in the cover so that the heater heats the ceramic layer to produce far infrared rays to irradiate the foot and hot water in the bath body. A structure is provided beneath the bath body for providing vibration to the foot. A pump is connected to the vibration structure so as to be driven thereby and an air transferring pipe is connected between the pump and the bottom of the bath body to transfer air therethrough while the air is heated by the far infrared radiation. A nozzle is provided in the bath body to mix the heated air and hot water and to eject the mixture of heated air and hot water at the surface of the hot water in a jet water stream.

Abstract: The disclosure embraces an exercising device such as a weight lifting device referred to as a barbell and an exercising device of a so-called dumbell type. The exercising device comprises a pair of housings mounted on a bar, each housing adapted to contain annularly-shaped weights in concentric nested relation with the innermost weights mounted on the bar and the housings secured to the bar. Each housing is provided with a cover supported on the bar and secured to the bar by releasable means. The annular nested weights in each housing are prevented against relative movements, the arrangement of weights in a housing being subject to any combination of a weight or weights with the retained weight or weights in a housing but restrained against movement in a housing and thereby render each housing and weight assembly of variable weight as desired by a user of the exerciser or weight lifting device.

Abstract: This invention relates generally to improved means for securing a working member within a rotary tool and is described hereinbelow with particular reference to a percussively actuatable striking bar secured by the novel securing means hereof within a percussive rock drilling apparatus.

Abstract: A pile driver in which a weight is reciprocated in a frame along a vertical path. The weight is suddenly retarded just before the weight reaches its lowermost position and the resulting high force is transmitted to the pile without an impact occurring. In one embodiment, the weight is connected to the frame by two pivotal links and these links are used to retard the weight. In another embodiment, the weight is driven upwardly and retarded by a cam mounted on a drive shaft.

Abstract: A stand device used in combination with a container such as a drum having substantially cylindrical configuration wherein at least two support legs are movable into and out of supporting relation. Each of the supporting legs comprises a configuration substantially corresponding to the exterior surface of the container such that in its non-supporting position, the legs are disposed in substantially flush engagement with the exterior surface due to an indentation formed in the exterior surface corresponding to the dimension and thickness of the leg means.

Abstract: A pneumatic percussion rock drilling hammer has a tubular housing for connection to a drill rod through which compressed air is introduced, the shank of a drill bit with an anvil at the top being slidable in the bottom of the housing, a piston being reciprocally slidable in the housing. Enlargements of the internal diameter of the housing define top, central and bottom pressure chambers. Air from the drill rod passes through a feed tube to an upper axial passage in the piston, and on the down-stroke of the piston a lower axial passage therein engages a sliding seal tube leading to an air passage through the bit. Pressure ports in the piston direct air from the piston's upper axial passage to the top pressure chamber when the piston is raised, and to the bottom pressure chamber when the piston is lowered, and exhaust ports in the piston conduct air between its lower axial passage and the central pressure chamber and from the central chamber to the top pressure chamber when the piston is lowered.

Abstract: A mounting assembly for removably mounting a device, such as a trailer light, upon a cleat-like fixture. The light or device being mounted is attached to a base which has an aperture formed therein and configured to correspond to and accept at least one prong of the supporting cleat. An elastic retainer, such as shock cord, is stretchably fitted over the other prong of the cleat. Further, in the event the cleat has a hollow center, a modification of the base of the device isl configured to fit over the cleat and has a pin which passes through the hollow portion to affix the device to the cleat.

Abstract: In one type of pneumatic percussion drilling tool, the pneumatic motor has an anvil-bit which is slidable in the forward end of the motor casing between a normal working position and an abnormal advanced position when the tool is hanging off bottom and the pneumatic fluid is caused to bypass the hammer-piston and blow continuously through the anvil-bit. In order to prevent tapping or chattering of the hammer-piston at such time, as a result of leakage of the pneumatic fluid into the forward working chamber, this chamber is vented by means of one or more passages formed in the surface of the anvil-bit member which are open while the tool is blowing and which are closed in the normal operating position of the anvil-bit member. Since the passages are only in the surface of the anvil-bit member, the structure eliminates the need for special configurations of parts to provide interconnecting recesses and passages as in certain of the prior art.

Abstract: A mirror for use in automobiles using a support frame of approximate C-shape and having a mirror support spring also supporting the support frame, the mirror support spring preventing the mirror from moving due to motion or vibrations of the automobile.

Abstract: A tiltable bracket which includes a first elongated member and a second elongated member. The members are pivotally interconnected and are restrained in a position with their respective longitudinal axes aligned. The members are pivotally interconnected to provide for relative pivoting therebetween a predetermined angular distance. A stop is provided to prevent further pivoting beyond the predetermined annular distance without restricting return of the members to the position with their longitudinal axes aligned.

Abstract: An impact drilling power tool has a housing, a spindle element mounted in the housing for rotation about an axis and for displacement in axial direction, and an impact element mounted in the housing for displacement axially toward and away from the spindle element. The impact element has an axially arranged extension coaxially received within a blind bore of the spindle element. The impact element has a plurality of cam surfaces provided on helical radial projections of the impact element, and rolling bodies of a cam follower element contact the respective cam surfaces and displace the impact element against the force of coaxial helical springs until encountering interruptions of the projections, upon which the springs rapidly displace the impact element toward the spindle element and an end face of the axial extension impacts the bottom of the blind bore. An output shaft of a driving motor drives a countershaft and via the same and meshing gears also the impact element and the spindle element.

Abstract: An hydraulic rock drill having an hydraulically reciprocable hammer piston arranged to pound an anvil carrying a drill string. A sleeve type shiftable valve periodically engaged by the piston to effect alternate application to and relief of pressurized hydraulic fluid from the piston cylinder to reciprocate the piston. A constant supply of pressurized hydraulic fluid to actuate the piston is provided by a surrounding reservoir. Hydraulic feed means responds to a predetermined displacement of the anvil relative to the housing to feed the housing relative to the work in accordance with the progress of the anvil. Hydraulic means serves to cushion rebounding actions of the anvil; and means is provided to apply cooling fluid to the sliding surfaces of the tool during its operation.

Abstract: A reef winning machine comprises a frame on which is mounted a saddle. The saddle carries a boom on which is mounted a drill. The saddle also carries a member on which is carried a mechanical rock splitter. The drill and rock splitter operate simultaneously, the latter acting in a hole that had previously been drilled by the rock drill. A jack moves the saddle along the frame in steps that are the same as the distance between the drill and rock splitter. An impact breaker may be used instead of a rock splitter.

Abstract: A portable torque and impulse transmitting machine comprises an elongated housing having a median plane of symmetry which extends in direction of the elongation of the housing, and a tool holder which is mounted on the housing for holding a material-penetrating tool. A drive motor is mounted in the housing and has a rotary output shaft which is mounted in the housing so as to lie in and substantially bisect the median plane. An impeller assembly is also mounted in the housing and includes an impeller mounted for reciprocting movement therein and operative for transmitting impulses to the tool. A first power train is mounted in the housing and arranged to effect reciprocatory movement of the impeller in response to rotation of the rotary shaft of the drive motor. The first power train comprises a crank gear having an axis of rotation which is substantially parallel to the rotary shaft and which is also offset from the median plane.

Abstract: A hydraulic drilling machine for cutting into rock formations and the like. The machine has a rotating drill rod with a bit at one end and a rotary hydraulic drive motor at the other end. The drill rod is supported on a carriage adapted for linear travel to advance the rotating bit into the rock formation. The carriage is extended and retracted by means of a hydraulic feed motor. The rotary hydraulic motor and the hydraulic feed motor are connected in series in the hydraulic operating system so that when rotation resistance increases accompanied by a greater pressure drop across the rotary hydraulic motor, there is a consequent decrease in the force exerted by the hydraulic feed motor in order to avoid jamming of the drill bit.

Abstract: A stand for holding a picture frame in a substantially vertically inclined viewing position including a base providing forwardly projecting side leg members upon which a corresponding flange of the picture frame is adapted to sit, with the stand providing locking tabs extending in spaced parallel relation to, but inwardly of, the side leg members for restraining engagement with the opposite side face of the picture frame flange so as to support the same thereon.

Abstract: A lock for preventing theft of a motorcycle. When the cycle is parked the brake is applied so that a detent holds the brake mechanism in locked position. The detent is actuatable by a key for releasing the brake.