Abstract:
The invention is directed to an apparatus for gripping and holding a plurality of relatively small flat chips, such as electron microscope grids, by the edges thereof. An elevated support member is provided, the support member having a top surface which defines a table and having an aperture therein. A support flange extends inwardly from the aperture a predetermined distance below the table surface. A gripping assembly is removably mountable in the aperture in the support member. The gripping assembly includes a first gripping member having a periphery corresponding to the contour of the aperture and having a thickness at its periphery which corresponds to the predetermined distance. A second gripping member opposes the first gripping member. At least a portion of the periphery of the second gripping member has a contour that corresponds to the periphery of the first gripping member. A resilient spacing means is disposed between the first and second gripping members and is operative to normally bias the peripheries of the gripping members slightly apart. Means are provided for temporarily squeezing the gripping members together. In operation, the gripping assembly is mounted in the support member and seated on the flange. Chips placed on the table surface can be manually moved to positions where their edges are between the spaced peripheries of the gripping members, whereupon activation of the squeezing means causes gripping and holding of the chip edges by the gripping assembly.
Abstract:
A frame has upper and lower portions with a passage through each one. The passages are axially aligned and spaced apart by a recess in the frame extending laterally out to the outside of the frame. A screw projecting from the ends of the upper passage can be turned by its upper end to lower and raise it. The lower passage will receive and hold the threaded end of a spark plug with its spark electrodes disposed in the frame recess directly beneath the screw, so that when a spark gap gauge is inserted between the electrodes the screw can be turned down to bend the upper electrode down as far as permitted by the gauge to thereby provide the required spark gap between the electrodes.
Abstract:
A device for a chucking apparatus, particularly machine vises having a force or pressure multiplying mechanism therein. A drive spindle is rotatable by a handcrank and acts onto a primary pressure member. A hollow spindle nut is provided on the side facing the outer end of the drive spindle and defines a coupling part. A coupling sleeve is axially movable and is secured in the sleeve and cooperates with the coupling part. The coupling sleeve has an opening therein for receiving a crank pin and has two additional axially longitudinally extending slots for receiving a carrier bolt therein. The coupling sleeve and the coupling nut are initially separated and, prior to the start of a chucking operation, the distance therebetween can be adjusted from a zero value to a maximum value.
Abstract:
A vise has a slide carrying a movable jaw. Rotatably mounted in this slide is a hollow spindle which screws in the vise body and has an extension in which is screwed a driving spindle. A push rod is slidable in the hollow spindle for transmitting force from a toggle mechanism to the slide. During rotation of the driving spindle in the clamping direction a clutch between the driving and hollow spindles is first engaged so that the slide is advanced by the screwing action of the hollow spindle. Subsequently, a tapered bolt advanced by the driving spindle exerts a wedging action on the toggle mechanism which is thereby extended and applies clamping force to the movable jaw via the push rod and the slide.
Abstract:
A shop tool of vise-like character which may or may not be secured to a supporting surface during use of the tool comprises a pair of jaws. The jaws are provided with various cutting edges and apertures and slots for reception of nails or wire for performing various work operations thereon.
Abstract:
A WORKBENCH OF SAW-HORSE HEIGHT HAS ITS TOP FORMED BY A PAIR OF LONGITUDINALLY EXTENDING TOP MEMBERS WHICH FORM A WORKING SURFACE AND WHICH ARE CARRIED BY TRANSVERSE SUPPORTS. ONE OF THE TOP MEMBERS IS FIXED WITH RESPECT TO THE SUPPORTS BUT THE OTHER IS HORIZONTALLY MOVABLE TOWARDS AND AWAY FROM THE FIXED TOP MEMBER TO FORM A VISE BETWEEN THE OPPOSED VERTICAL FACES OF THE TOP MEMBERS. ADJACENT EACH END THE TOP MEMBERS ARE INTERCONNECTED BY SCREW THREADED RODS WHICH ARE RESTRAINED AGAINST AXIAL MOVEMENT AT THEIR ENDS ADJACENT THE FIXED TOP MEMBERS BUT WHICH ARE RECEIVED IN NUTS CONNECTED TO THE MOVABLE TOP MEMBER. THE CONNECTION OF THE BUT TO THE MOVABLE TOP MEMBER ALLOWS INDEPENDENT OPERATION OF THE SCREW THREADED RODS TO PERMIT THE GAP BETWEEN THE VERTICAL FACES TO BE GREATER AT ONE END THAN AT THE OTHER.