A machine tool comprising a turret for receiving tools, a drum magazine for storing further tools, and an automatic device for conveying the tools from the magazine into a working position on the turret, in which the drum magazine is arranged coaxially to the turret. The tools of the turret may define a pitch circle and the drum magazine may be constructed as part of the turret within the pitch circle or it may be arranged in rotary manner within the said pitch circle. In another construction, t...

A hand tool of the kind comprising a pointed edge or blade, and a cover protecting the latter in the non-operative position thereof but intended to be swung away to expose the point in the operative position of the tool. Means are arranged to lock the cover to prevent it from being inadvertently moved to the point-exposing position but to allow the cover to be swung away readily to expose the point by using one hand only, when the point is to be used.

A tool for insertion into a core including a pair of pivotally connected levers having forwardly-extending jaws for insertion into the core and rearwardly-extending actuating portions to which the opposite ends of a flexible-wall fluid actuator are fixed for applying force to the actuating arms and pivotally expanding the jaws.

A well tool for inclusion in a tubing string of a well adapted to perform multiple functions including controlling fluid flow through the tubing string and/or cutting coiled tubing or wire line used in the tubing string for performing well completion and workover functions. The tool includes a tubular body connectible in a tubing string and having a flow passage therethrough, a spherical seat surface around the flow passage developed on an eccentrically positioned center relative to the axis of ...

Fastener tools having a rotatable output member to which a fastener engageable component can be attached, a motor for rotating the output member, and a transducer for measuring the torques to which fasteners are tightened by the tool.

A machining assembly includes a single machining unit, a plurality of multiple heads, a cross transfer device for changing the heads by moving them transversely relative to the machining unit, and means for recirculating the heads from the discharge end section of the cross transfer to the feed end section, the end sections being tiltable about a horizontal axis from a vertical position to a horizontal position so that the heads may be used with their spindles horizontal but are moved along the ...

A cutting tool include a shank having a head, a groove which is formed on the outer face portion of the head only in the dextrally spiral form, and hard abrasive grains-attached section formed on the outer face portion of the head except for the groove. The total sum of the width of the groove in the section normal to the axis of the head of the shank is in a range of (1/50 to 2/5).times..pi.D, except for the endmost terminating portion of the head, wherein D is the diameter of the section norma...

A tool for use in tightening or removing a fastener that requires greater torque than the user can generate through application of hand force on the handle of the tool with the handle of the tool having sufficient length for a user to grasp in the user's hand as the user tightens or removes a fastener. The handle of the tool having a head with jaws for engaging a fastener to tighten or remove the fastener and a second end on the opposite end of the handle having a square opening to receive a dri...

A bipolar microsurgical instrument enabling a surgeon user thereof to effect successive operative steps incident to microsurgical procedures while retaining the surgeon's position at a microscopic viewing port defining a field of vision wherein the instrument is being used to effect the procedures. The instrument comprises an elongated body the distal ends of which comprise first and second oppositely extending surgical tools which define alternate poles of the instrument. The first and second m...

A casing centralizer is provided. Such a casing centralizer includes a tubular body substantially comprised of a plastics material and having an innermost surface, an outermost surface, and opposed ends. The tubular body is adapted to surround a well casing and to centralize the well casing within it wellbore. The innermost surface of the tubular body defines at least one recess that extends longitudinally and radially tapers along at least a portion of the innermost surface. An associated wellb...