Abstract: The invention is an instrument comprising a unit having a frame defining the perimeter about an aperture, and a manually adjustable rack connected to the frame for supporting the unit with its aperture disposed between a source of x-rays and the body of a patient. Radio-opaque flexible panels depending from the frame are pivotable relative to the aperture to collimate and limit x-rays issuing from the source through the aperture to a particular area of the body of the patient. Translucent ports along lower edges of the panels serve to provide upon a photographic film below the patient a scale indication of the area of the body of the patient subjected to the x-rays.

Abstract: The invention provides a device which includes a bracket to be firmly embedded in a driveway; and includes a post which is adapted to be slidably seated in the bracket in a vertical position to serve as an obstruction to passage of a motor vehicle from the driveway. An Ell-rod provided in the post is manually operable to interlock the post against removal from the bracket, and is adapted to be locked in the interlocked condition by a padlock. The ell-rod is manually operable upon removal of the padlock to release its interlocked condition so as to allow removal of the post from the bracket to enable vehicle passage over the driveway.

Abstract: A manually held instrument having an elongated tube containing a compressed spring unit, into which tube a sinker of a connected fishline is adapted to be entered into abutment with the compressed spring unit. A stop restraining expansion of the compressed spring unit is adapted to be finger released by the fishman; and, when the stop is released from the compressed spring unit, the latter forcefully expands to cast the abutting sinker and connected fishline an appreciable distance from the instrument into the water. A push-rod slidable in an elongated support mounted to the body of the instrument may be removed by the fishman and entered into the elongated tube to return the spring unit to its compressed condition restrained by the stop.

Abstract: A table unit having a tabletop which is subject, upon being manually released from a locked condition, to being raised relative to a base portion of the unit to a selectable level under pressure of weights constantly urging it upwards, and is subject to being manually relocked against pressure of the weights upon reaching a selected level; and the tabletop is subject to being lowered from an elevated level upon manually releasing its locked condition and exerting a downward pressure upon it overbalancing the upward pressure of the weights.

Abstract: An elongated device which may be strapped centrally of the rear seat of an automobile against relative movement by means of the usual seat belts that are attached to the rear seat, and to the central area of which device two small children may be strapped by means of a pair of seat belts attached to the device.

Abstract: The invention provides wind flow dissipating units mountable in close relation to one another along the sidewalls of the roadway of a suspension bridge and providing pivotable plates hanging from the units in opposed parallel relation to the sidewalls, the plates being adapted to interfere with and dissipate the force of steady wind blowing toward the sidewalls so as to avoid undesirable resonance swaying of the bridge by the wind.

Abstract: A device having a pair of right-angle members slidable relative to each other to bring the jaws mounted to the foot of a leg of one of the members and the jaws of an opposed clamp mounted to the foot of a parallel leg of the other member into clamped engagement with diametrically opposed brake cooling slots and the adjacent surface of a wheel of a parked motor vehicle, and including a key operable lock mounted in part to each of the right-angle members which serves to secure the members in the clamped condition. In its diametrically applied condition to the wheel, the device obstructs application of a boot over the lug nuts of the wheel, and an elongated arm of one of the member extends beyond the periphery of the wheel so as to immobolize the wheel against rotation relative to the roadway.

Abstract: A return coin discharge unit mountable in the box cabinet of a coin operable telephone apparatus has an entry opening into which return coins from the apparatus will drop and it includes a ramp in a passage down which ramp the dropped coins will slide and issue through a horizontal slot at a front end of the unit. An open ended trough having a curved inner bottom surface located on the ramp below the entry opening serves to cause dropped coins moving over its curved surface to obtain horizontal positions for sliding down the ramp. And, a flap gate pivoted in the passage and inclined forwardly with its bottom edge resting upon the ramp functions to allow one coin at a time to pass beneath it to the exit slot. Explosives and blocking material are prevented by the narrow horizontal slot against entry into the unit; and the gate curbs the extent to which damaging wires may be inserted through the slot into the unit.

Abstract: The invention is a rack having a pair of opposed upright columns between which rolls of wallpaper may be held upon dowel rods for unrolling. Below the dowel rods a unit is mounted between the columns. The unit includes a cutter guide member which is raisable relative to an underlying support, whereby paper may be drawn from a roll beneath the cutter guide member and over the support. The cutter guide member serves as a guide along which a knife may be drawn to cut from the roll a section of paper resting upon the support with a straightedge. And the principal components of the rack are held together by four bolts, whereby the rack may be readily knocked-down to its components upon removal of the bolts. The knocked-down components are light in weight, and may be piled together into a compact flat pack for manual portage and subsequent reassembly.

Abstract: A device for protecting the user of a medical blood drawing instrument of the evacuated tube type from being pricked by the needle when removing it from the instrument. An end portion of the needle is threadly engaged in the instrument; a splined portion of the needle is disposed externally of the instrument; and the splined portion is normally engaged by a sheath protectively covering the needle before use is made of the needle. After removal of the sheath, use is made of the needle in a venipuncturing action. When the used needle is to be separated from the instrument, the needle with its splined portion is inserted into a passage of an upper member of the device. A cam mounted in the upper member is subject to being actuated by the user to engage the splined portion and hold the needle fast, so that the instrument may be turned relative to and unthreaded from the needle.

Abstract: An instrument for protecting the user of a medical syringe from being pricked by its needle when unsheathing or resheathing the needle. The instrument has an upper member releasably mounted atop a disposable container. A vertical passage through the upper member empties through a hole into the container. The passage has a coned entry mouth enabling the user to guide the sheathed needle end of a syringe into the passage.