Abstract: In an ultrasound cutting device comprising an ultrasound transducer connected to a generator and provided with a sound conductor which is connected to a cutting blade and extends along a line which deviates from a straight line, the generator includes means for running the ultrasound waves in a controlled manner through a predetermined frequency range.

Abstract: The self-contained force magnifying tool disclosed herein includes a tool portion, a striker, at least a portion of which is disposed within the tool portion, and a spring, a least a portion of which is disposed within the tool portion. The spring attaches to both the tool portion and the striker. When the striker is pulled by a user, the spring stores mechanical energy. When the user releases the striker, the striker impacts on the tool portion transferring the mechanical energy stored in the spring into a driving force. The force is magnified by a tool disposed on the tool portion of the self-contained force magnifying hand tool and applied to a workpiece.

Abstract: A throwing knife. The throwing knife comprises a body having a first end and a second end. A handle is affixed to the first end of the body, and a blade is affixed to the second end of the body. A weighted member includes a perimeter defining a central channel and is configured to slide between the handle and the body. The weight may include a ring slidably disposed along the body, or a ball inserted into a hollow channel within the body adjacent an optional packing material, or may include both types of weights. The body is narrower than both the handle and the blade, such that a ring weight disposed about the body is configured to slide between a forward edge of the handle when held by a user, and a second position wherein the weight contacts a rear edge of the blade when thrown.

Abstract: A multi-impact hand tool comprises a sleeve, a tool head, a movable rod, a spring and an impact block. With only one impact operation, the multi-impact hand tool can provide a multi-impact effect, thus improving the working efficiency. In addition, the impact force can be directly transferred to the tool head for performing the chiseling operation, thus improving the working efficiency.

Abstract: A multi-impact hand tool comprises a sleeve, a tool head, a movable rod, a spring and an impact block. With only one impact operation, the multi-impact hand tool can provide a multi-impact effect, thus improving the working efficiency. In addition, the impact force can be directly transferred to the tool head for performing the chiseling operation, thus improving the working efficiency.

Abstract: The cutting assembly functions to sever the urethane bed bonding a windshield to a vehicle. The assembly comprises a reciprocating air gun connected with a cutting blade by a shaft. The blade has a straight front cutting edge about 4 inches in width. The blade is reciprocated in and out of the bed to sever it.

Abstract: A chisel device for providing a chisel and slide hammer combination. The chisel device includes an elongated body having a first end and a second end, An annular flange is integrally coupled to and extends around the elongated body. The flange is positioned generally between the first and second ends of the elongated body. The second end comprises a female coupler. A tubular member has an aperture extending therethrough. The elongated body extends through the aperture such that the tubular member is slidably positioned between the flange and the first end of the elongated body such that the tubular member defines a slide hammer. At least one head has a bit portion and a male coupler portion located opposite of each other. The male coupler is adapted for releasably securing to the female coupler.

Abstract: The invention is a tool to be struck, or a striking tool, (collectively referred to as an “impact tool”), or alternatively, a cap, that will not suffer metal spall and the attendant dangers of spalling and flying or cutting metal slivers. The preferred mode is on a chisel (wood or cold) or repeated impact tool. The chisel would have a striking end cut square to the shaft. The striking end would be opposite the working end. Other tools such as impact wrenches, jackhammers, wedges, spikes, hammers, mallets or other tools being struck or striking forcibly benefit from the invention by use of a disk insert of polymeric material to alter ergonomic and noise characteristic.

Abstract: A firefighter's wrecking tool or pike pole includes a first elongated tubular pole section connected to a penetrating tip assembly at one end and to a second pole section at its opposite end. The second pole section supports a manually activated reciprocable piston hammer slidably mounted on the second pole section and engageable with spaced apart anvils secured to the tool for receiving repeated impact blows to facilitate use of the tool. The piston hammer may be locked in a position for carrying and manipulating the tool by a thumbscrew or by a sleeve type locking member.

Abstract: A handle device of an impact hand tool is proposed. The handle device is designed for an axial force to be applied thereto. An impact force can be used to assist the hand tool. The handle device includes a handle and an impact device. The front end of the handle has a rectangular hole. The impact device includes a confining cover, an elastic element, and a tool handle. The confining cover is a rectangular sleeve and the central top thereof contains a receiving groove. The front wall of the receiving groove has an inserting hole which penetrates to the front surface of the confining cover. An elastic element is installed in the receiving groove. The front end of the tool handle is a working portion and the rear section thereof has a handle post. The handle post can be inserted into an inserting hole of the confining cover and extend to the receiving groove. Therefore, a handle device of an impact hand tool is formed.

Abstract: A guard for a weed trimmer includes an elongated telescoping arm attachable to a trimmer shaft. The arm is biased in an extended position. Pivotally attached to a distal end of the arm is a protector plate for providing a protective barrier between a trimmer head and another object such as a tree trunk, plant or fence. The distance between the plate and trimming head can be selectively varied by pressing the plate against the object.

Abstract: A tool for inserting beneath a plant to sever roots, such as tap roots, that are located beneath a tree or shrub at a location relatively far from the circumference of a root ball, the tool comprising a cutting blade of generally triangular shape having a leading edge which is a relatively narrow cutting edge, and having sides angled inward from the cutting edge. The cutting blade is mounted on a long, slightly arcuate, slender shaft which is sufficiently long to reach under a tree shrub to sever roots and define a root ball in preparation for transplanting the tree or shrub.

Abstract: An impact actuated bakery grid device 10 for producing uniform portions of baked goods wherein the grid device 10 includes a force generating unit 13 operatively associated with a handle member 30 which is connected at widely spaced locations on a grid member 20 for forcibly ejecting the portions of baked goods from within the confines of a plurality of compartments 24 within the grid member 20.

Abstract: An electromagnetic percussion device, which includes a housing and an instrument which is connected to, and which extends beyond, the housing. The device further includes a piston body reciprocatable within the housing and adapted to impact the instrument. The piston body includes an intermediate region of a first diameter and an enlarged posterior head of a second diameter, with the second diameter being larger than the first diameter. The device also includes a driving member reciprocatable within the housing. The driving member includes a coupling element for slidably accommodating the head of the piston body, thereby coupling the driving member and the piston body together. A permanent magnet is connected to the driving member. Finally, an electromagnet coil is connected to the housing, the coil being operationally coupled to the permanent magnet so as to cause the reciprocation of the driving member.

Abstract: A reciprocating cutting tool includes a shank for mounting in a pneumatic hammer, a blade holder assembly connected to the shank and a blade clamped in the blade holder assembly. The blade holder assembly includes a base member and a retainer member which are clamped together. A blade receiver is formed between the base and retainer members. The base member includes a recess and the retainer member includes a shoulder which is received in the base member recess for abutment by a fixed end of the blade.

Abstract: This invention relates to a pelvic splitter device and method of use thereof used primarily by hunters to split the pelvis of a large game animal during the gutting and cleaning of the animal. The pelvic splitter device comprises a shaft having a hook member and a knife edge at one end thereof and further comprises an impact and handle means having two longitudinal half bodies having mirrored sides with grooves, longitudinal recesses, and recessed portions therein to receive the shaft. The impact and handle means slides upon the shaft and functions, in addition to storing the shaft when not in use, as a slide hammer to impact the rearward end of the shaft to urge the hook member and knife edge through and split the pelvis of the game animal such as a deer.

Abstract: A "trim-easy" wall paper trimmer (10) which is light weight, hand-held and comprising of four rechargeable d.c. battery cells (15) contained in a battery chamber (12) and supplying power to a 4.8 volt electric motor (24) which drives a reciprocating action for two spring-loaded cutting rode (29, 30) of some 8000 strokes each minute. The "trim-easy" wall paper trimmer (10) cuts through wall paper coverings in situ and with ease. No scissors or knives are required to shape round switches, sockets, covings or any other wall appurtences. The "trim-easy" trimmer (10) is press-button operated by a conveniently placed finger switch (14) and includes a 2.1 mm standard power charging socket with a LED signal lamp (19) to indicate correct charging procedures. The "trim-easy" trimmer (10) is conveniently and easily held in one hand to direct the cutting rods (29, 30) at a correct angle to ensure paper can be cut cleanly, without tearing and in a fraction of the time it takes to do so by knife or scissors. The 4.

Abstract: A shape memory alloy (SMA) actuator predeformed in compression actuates a cable cutter mechanism. A cable or other item to be cut is placed between an anvil and a movable blade affixed to the SMA element. The SMA element is heated by an electrical resistance heater to cause it to return to its undeformed elongated state, thereby moving the blade against the anvil to compress and sever the cable or other item. Ones of the shape memory alloy actuator have a plurality of parallelly arranged SMA elements, every other one of which is predeformed in compression and intermediate ones of which are predeformed in tension. The elements are coupled end-to-end so that, when they are heated to cause them to return to their undeformed states, their respective elongations and shrinkages combine at the output to produce an actuation that is the cumulation in the same direction of the changes of all the elements. The plurality of elements may be in a side-by-side or concentric arrangement.

Abstract: A powered tool removes moldings or other mounted item without imparting damage to the surface being worked upon. The tool has a blade affixed to a handle. The handle and blade are interdigitated so as to form a flat surface along the bottom of the tool. This smooth, flat surface allows the tool to be deployed upon the surface and the blade then slid underneath the molding, such that, by a pneumatic force or other power supplied thereto, the tool easily lifts the molding away from the surface. The handle of the tool has a gripping portion and blade-engaging portion, such that the tool can be comfortably gripped to effect the removal of the molding. The damage to the surface is eliminated when using the present tool, in part, by the formation of the blade of plastic.

Abstract: An assembly for servicing a cruciform control blade includes a carriage having first and second crossarms each containing a generally U-shaped slot for receiving the top of the control blade. The first crossarm includes a clamping actuator to rigidly clamp the carriage to the blade top. The second crossarm includes a tool positionable adjacent to a roller aperture in a selected one of the four panels of the control blade. The tool is positioned on the second crossarm at a predetermined depth, and at a predetermined lateral span from the first crossarm so that upon mounting of the carriage on the blade top and actuation of the clamping actuator, the tool is vertically and laterally aligned with a center of the panel roller aperture. In one embodiment, the tool is effective to sever the roller from the panel aperture without damaging the panel, and in another embodiment the tool is effective for installing a replacement spacer pad in the aperture.

Abstract: A brush attachment for a power tool, such as an electric drill, capable of rotating a suitable shaft including an attachment body containing a longitudinally extending chamber and an elongate shaft rotatably mounted in this body and projecting from a rear end thereof. A cam and cam follower mechanism in the chamber convert rotary motion of the shaft into a reciprocating linear motion. There is a shaft mechanism mounted in the body for sliding reciprocating movement only relative to the body and connected to the cam follower. This shaft mechanism projects from a front end of the body. A brush is attached to a front end of the shaft mechanism and reciprocates with this mechanism in the longitudinal direction thereof. The brush attachment can be mounted on the power tool so the attachment body remains stationary relative to the tool when the shaft is rotating.

Abstract: A portable hand-cutting tool having a pair of perpendicularly arranged handles which is used for separating the trailing edge of bonded elevator or rudder skin panels following removal from an aircraft for repair. The tool features an electrically heated knife blade in combination with pneumatic controls for linearly vibrating the knife to achieve the cutting. The blade is fabricated from spring steel, has a leading edge sharpened with a full width taper, and is directly heated by way of electrical currents passing through the blade electrodes connected to the blade.

Abstract: An edging tool includes a sleeve unit in which a weight bar is slidably received and on which a blade is mounted. The weight bar is drawn back to a cocked position by hand, and when released, impacts an impact block mounted on the sleeve unit and which is in contact with the blade so impact from the weight bar drives the blade downwardly. The blade unit has a cutting edge which is positioned adjacent to an area to be edged. The movement of the weight bar with respect to the sleeve unit is controlled by various elements on the edging tool.

Abstract: A mold extractor and method of manufacture thereof is provided. The extractor or tool is used to remove the annular wall, bottom wall, and lid of a plastic mold container from a concrete test sample taken at a construction site for later testing in a test laboratory. The extractor includes a hammer member, a guide member and a chisel member. The hammer is reciprocally displaced by an operator for applying a downward force on the container annular wall at the wall edge. The hammer has a peripheral wall having an elongate hole with an axis through which the guide portion extends. The hammer has enlarged end portions, for gripping by the operator and for applying the impact force. The guide member is an elongated round bar portion which has a handle at the top end thereof. The chisel member has a head portion, a square bar portion, a claw portion, and a chisel end portion. The claw portion is used for lifting the container lid by applying an upward force on the extractor.

Abstract: This invention relates to a new prosthetic ligament and a set of surgical instruments for use in the surgical replacement of a ligament and in particular for inserting a prosthetic ligament into the body.The ligament in accordance with the invention comprises an elongate foraminous flexible strip, having at one end a pouch portion capable of receiving a bone plug and including an opening through which the bone plug may be inserted into the end portion, the pouch portion also including a closure or the like to prevent escape of the bone plug in a direction away from the center of the ligament.The set of surgical instruments includes a new bone plug extractor which is adapted to sever the base of the bone plug from a host bone to allow complete separation of the bone plug.

Abstract: A self-actuated woodworking tool [T] for one-handed reciprocating operation has a chambered haft [1] and a tool shank [4] carried captively axially within the haft in slidable, reciprocal relationship. A shank portion [5] extending forwardly from the haft has a cutting edge [6]. A haft ferrule [11] precisely orients the shank and so also the cutting edge angularly with respect to the haft. The haft cross-section permits the user to know by tactile feedback the angular orientation of the haft and thus also the cutting edge. A guide [10] carried by the shank within the chamber cooperates with the ferrule and provides low-friction sliding interengagement between the tool shank and walls of the chamber without radial displacement from the axis. The chamber [3] provides an internal contact surface [16] for hammer-like blows thereon against a shank butt [17] for driving the cutting edge against the workpiece.

Abstract: A compact, easy-to-use sheet metal tool which is capable of receiving hammer blows and having a cutting element capable of penetrating the sheet metal to create a slot and to cut an extended slot in the sheet, the tool is further provided with a flat guide portion to facilitate proper orientation of the tool and to guide the tool along the surface of the sheet.

Abstract: A tool for cutting the ends from spent cans of paint, solvents, or coatings so that the can wall can be easily flattened to facilitate disposal. The tool includes a handle having a hand grip on one end and a cutting head on the other end. The cutting head presents a special circular cutting blade having two sharp points and a tapered configuration between the points and a pair of valleys. A weighted sleeve which slides on the handle applies a driving force to the cutting head, causing the sharp points to pierce the can end followed by slicing action from the remainder of the cutting edge to cleanly sever the end of the can.

Abstract: An explosive actuated hand tool for cutting clean holes in sheet material, wherein the explosive force causes a piston to pull a punch toward a die, the material being located between the punch and die. Convenience and safety features include means for arming the firing mechanism by rotation of a locking ring which secures a cartridge in its chamber and means to prevent movement of a firing pin unless a lever has been moved from an OFF position to the ON position.

Abstract: A punch mechanism for remote removal of guide balls from nuclear reactor control rods, includes attachment means for attaching the punch mechanism to means for reversibly lowering the punch mechanism over the top of one of the control rods. The mechanism includes a die and cylinder means operatively connected to the die for axially moving the die in a back-and-forth direction, a die block cooperating with the die, and guide means for self-aligning the punch mechanism so that the die and the die block are automatically aligned with one of the guide balls therebetween when the punch mechanism is lowered over the top of the control rod. When the punch mechanism is lowered into aligned position, activation of the cylinder means will cause the die to advance into the die block, thereby removing the guide ball from the control rod. The punch mechanism is then remotely raised above the control rod, rotated 90 degrees, and lowered to repeat the ball removal procedure.

Abstract: A safety chisel especially adapted to shear bolts having a nut permanently attached thereto, while retaining the sheared bolt and nut assembly within a safety container portion of the chisel.

Abstract: A device is provided which can be used to remove washers from bolts in an efficient, fast and safe manner. The device is comprised of a removable blade assembly disposed in a handle device. The blade assembly has an opening permitting the insertion of the bolt such that when the bolt is fully inserted into the blade assembly, the washer is in contact with a plurality of substantially radially disposed blades. The device itself is provided with a handle, in one embodiment knurled, so that it may be held in a persons hand. After the bolt is inserted into the device, the bolt head is tapped using a striking device, such as a hammer. The force of the impact causes the blades to be driven into the washer, splitting the washer into several arc-shaped pieces and separating them from the bolt. The resulting pieces fall away from the bolt when the bolt is removed from the device, or at least then may be very easily removed from the bolt.

Abstract: Percussion device for triggering the primer of a blasting charge of an actuation device. It comprises a striker (4) moveably housed and retained in a support (1), as well as a helical traction spring (7) of which one end (8) is secured to the striker. The other end (9) of the spring (7) is provided with a hook member (10) allowing to maintain the spring in a tensioned state and to suddenly release the spring to cause the percussion by spring contraction. The invention is particularly applicable to devices to sever cables, for example on boats, in case of dismasting.

Abstract: A combined nut cutter and wrench tool including a body having an axis and a base from which a plurality of cutting blades extend with the cutting blades each having a first surface inclined relative to the axis and a second surface extending generally in the direction of the axis, the first and second surfaces converging to form cutting edges. A nut cutting tool including a body in the shape of a nut having an axis and an outer peripheral surface for reception in a socket of a socket wrench, a base on the body and a plurality of cutting blades extending outwardly from the base around the axis.

Abstract: A power operated percussion tool in which a shoulder (28) in the tool housing (10, 17) defines a rear rest position for working implement (12) attached to the tool, and in which an energy absorbing bias unit (23, 31) is arranged to resiliently load the working implement (12) toward the rest position. The bias unit (23, 31) comprises a spring (23) and a shock wave mitigating ring assembly (31) and acts between a rearwardly facing shoulder (22) in the housing (10, 17) and a forwardly facing shoulder (30) on the working implement (12). The ring assembly (31) includes two spring steel rings (32, 33) formed with mating conical contact surfaces for transforming axial load variations into radial deformation of the rings (32, 33).

Abstract: A cutting tool for separating beads of adhesive, with a U-shaped cross-section consisting of two flanks connected by a web. One flank is a sickle-shaped blade and the other is employed to attach the tool to an oscillating driveshaft. The center of curvature of the sickle shape extends toward the point at which the cutting tool is secured. The web between the tensioning shank and the blade may have ridges. These ridges extend to the sides of the tensioning shank and blade. The web is longitudinally curved between the tensioning shank and the blade, and has round edges.

Abstract: A front end loader has a loading bucket secured to a tractor and a transversely elongate cutter blade closely spaced forward of a lower front edge of the bucket. Improved apparatus for reciprocating the blade in forward and aft directions relative to the front edge of the bucket is disclosed. A force transmitting beam has a resonant frequency with at least one node and first and second anti-nodes at the resonant frequency. A source of vibrations at or near the resonant frequency is coupled to the beam near the first anti-node to vibrate the second anti-node about a neutral position. The beam is secured near one node so as to locate the neutral position of the second anti-node in spaced relationship from the cutting blade within striking distance thereof. The second anti-node thus applies unidirectional force impulses to the blade in a forward direction as the second anti-node vibrates to drive the blade intermittently forward.

Abstract: A pneumatic impact tool has a tubular housing with an impact head secured in and extending outwardly from one end of the housing and a valve secured within the housing but spaced from the impact head so that a piston chamber is formed within the housing. The valve has an inlet port adapted to be connected to a source of pressurized fluid and two outlet ports for the alternate release, respectively, of pressurized fluid. One outlet port opens directly into the piston chamber while the other is connected by a passage to the piston chamber immediately adjacent the impact head. At least one exhaust port is provided through the housing for exhausting pressurized fluid from the piston chamber when the piston reaches the end of its travel in each direction of its stroke. The housing is adapted to be connected to a source of pressurized fluid so that pressurized fluid enters the inlet port of the valve.

Abstract: A wedge head is provided having upper and lower surfaces and front and rear ends. The upper and lower surfaces are forwardly convergent toward a forward transverse apex edge of the head and an elongated handle is provided including base and free end portions. The handle base end portion is anchored relative to the head with the handle free end portion projecting rearwardly from the rear end of the head. A weight body is slidably mounted on the free handle end portion for guided reciprocation between front and rear limit positions on the handle and the wedge head includes front-to-rear extending opposite side surfaces which are rearwardly convergent. The side surfaces are also upwardly convergent and the forward transverse apex edge includes structure defining transversely spaced forwardly projecting teeth.

Abstract: A chopping hand tool, including a slidable hammer along a handle of the tool for striking against a hammer stop mounted on the handle, so to transmit the hammer striking force to a toothed edge of a blade affixed to one end of the handle, so that the toothed edge is used to chip materials against which it is applied.

Abstract: A vibration damped portable impact tool comprising a pneumatically powered reciprocating mechanism to which a chisel is connected. In the disclosed tool the chisel is rigidly connected to the piston of the reciprocating mechanism so as to move conjointly therewith. The drive mechanism is arranged in a previously known manner to absorb its own acceleration forces whereby the only vibration forces acting on the tool derive from the chisel in its contact with the work piece. By adapting the spring constant relating to bending of the chisel to the entire mass of the tool such that the resonance frequency of that system is lower than the impact frequency, the vibration forces arising at the working end of the chisel are not transmitted to the tool housing.

Abstract: A power hoe includes a power source, two substantially planar hoe blades positioned in apposition to one another and power connecting structure to synchronizingly reciprocate the blades in sliding engagement relative to each other. The sliding engagement causes the blades to be self-cleaning. Orientation of the tapered end of each hoe blade perpendicular to the direction of reciprocation effects a ground penetrating action of the hoe blades.

Abstract: A device capable of use either by hand or with a powered reciprocating actuator for removing vehicle glass panels that have been adhesively bonded into a vehicle frame using an elastomeric sealing strip, said device comprising an elongated flexible blade having a gripping element and a sharpened edge at opposed longitudinal ends thereof, the sharpened edge being curved and coplanar with one face of the blade.

Abstract: A bulldozer having a transversely elongate cutter blade closely spaced from the bottom edge of the mold board is disclosed. The cutter blade is mounted for reciprocal motion in forward and aft directions relative to the mold board. Unidirectional force impulses are applied to the cutter blade in a forward direction to drive the blade intermittently forward without aft motion. Preferably, the unidirectional force impulses are applied by first and second matched force transmitting beams. Each beam has two divergent approximately straight legs that meet at a juncture to form an acute, approximately 90.degree. angle, a node at the juncture, an input anti-node at the end of one leg, and an output anti-node at the end of the other leg at the input frequency. A source of vibrations at or near the resonant frequency is coupled to the input anti-node and the output anti-node is disposed in spaced aft relationship from the cutter blade within striking distance thereof.

Abstract: The present invention relates to a variable stroke, impact device comprising a rotating cam impeller which includes an elongated first end portion adaptable for attachment to a rotary drive source and further includes a curved cam surface formed on a second end portion. The rotating cam surface interacts with a curved end portion of an impact tool to reciprocate a wedge-shaped portion of the tool into contact with a work surface. The length of the stroke and the reciprocating speed as well as the impact force are directly related to the force exerted by the operator in pressing the impact device against the work surface.

Abstract: A tool for use in removing the outer sheet metal skin of an automobile door. The tool includes an elongated body having a generally longitudinal axis. A shank is located at one end of the body for connection to a reciprocating apparatus such as an air hammer. A cutting portion is located at the opposite end of the elongated body. The cutting portion of the tool includes a somewhat flattened area extending from the end of the tool. A pair of fingers are located at the cutting end of the tool and project outwardly from the flattened area side of the body. The fingers extend generally at right angles to the longitudinal axis of the body and are spaced apart a sufficient distance to straddle the outer edge of an automobile door to guide the tool during cutting. A narrow cutting tooth is formed on the flattened area of the cutting portion of the tool and is positioned to engage the edge of the automobile door when the fingers are straddling the edge.

Abstract: An oscillating cut-out tool used for removing windshields from a vehicle. The tool designed to cut through urethane or similar types of material used in securing a vehicle windshield in a windshield frame.

Abstract: A shearing tool for use in dismantling steel structures such as multi-story buildings takes the form of a large heavy inverted U-shaped steel member of a size enabling it to be elevated and dropped on a horizontal floor beam for example adjacent a vertical column to shear the same therefrom.

Abstract: The disclosure relates to an improved manual impact apparatus for driving a stake of the type having a head at one end thereof, which apparatus is characterized by a slidable sleeve having oppositely disposed and facing impact stops therein to confine the stake head therebetween during driving or pulling, whereby the stake may be longitudinally propelled in response to impact between one of the impact stops and the stake head.

Abstract: A percussion tool having a shank and a pair of generally planar wing portions extending therefrom is provided with a pair of blades which extend from edges of the wing portion. Each wing portion and the corresponding blades are provided with a cutting edge which is L-shaped such that one cutting blade can readily underlie the edge of a windshield during removal. The shank portion is provided with a collar which defines a bit to connect the tool with a pneumatically operated tool holder. The tool includes a nose portion which may be used to break a small slot in the edge of the windshield to receive one wing and blade. The tool is then driven around the circumference of the windshield to sever the adhesive material bonding the windshield to the vehicle and thereby loosen the windshield for easy removal.