Abstract: A distance measuring tool is provided for measuring the length of a drill pipe maintained under tension within a well. The tool includes a unitary instrumentation and instrument drive module which is sealed within an instrument housing and which may be removed and replaced as a single unit when malfunction occurs. The moving parts of the module are sealed in lubricating fluid, and a pressure equalization system is provided to equalize the pressure of the lubricating fluid relative to the external drilling mud pressure. The instrumentation and instrument drive module includes a mechanical distance counter and a drive mechanism which drives the counter only when the tool is descending into a drill pipe. The instrumentation within the tool is protected against impact by a shock absorbing nose assembly which includes both mechanical spring and hydraulic shock absorbing units.

Abstract: A gauge for measuring the chord length across an airfoil at a plurality of locations along the span is disclosed. Concepts ensuring accurate measurement notwithstanding deviations of the airfoil contour from design conditions are discussed. Floating gauge plates 46 locate the local position of the airfoil leading edge. A notch 58 in each plate marks the minimum acceptable chord length.

Abstract: An aperture setting device for use in a drawing die, a chuck and so forth, in which at least three or more substantially triangular movable pieces are sequentially arranged in the form of a ring, an aperture is formed by one end portion of an inner side of each movable piece and the movable piece is movable along a side opposite its vertical angle on the side of the aperture, together with the other movable pieces. The movable pieces are disposed in a frame. By the movement of the movable pieces, the aperture can be varied in size without being changed in configuration.

Abstract: A device to locate the position of a communication satellite with respect to a specific site on the earth's surface including a transparent screen having markings to indicate the positions of one or more satellites for that site with respect to a horizontal platform and a north orientation, a table including an arcuate means to mount the screen, a wide-angle viewer fixed to the table with its axis perpendicular to the tangent of the arcuate means at its south position, a compass fixed to the table oriented with north-south parallel to the axis of the wide-angle viewer and a level to indicate when the tabletop is horizontal.

Abstract: An adjustable carriage for mounting a measurement bar to a selected vehicle frame or body having locations corresponding to measurement points utilizes a carriage block sleeved about and slidably embracing the bar and has a clamp to secure the block at a selected location. An adjustable arm is mounted on the carriage block and has a socket affixing connectors which mount the bar from the vehicle. The arm is shiftable angularly to enable connection to the body at the proper points even though the points may be coarsely misaligned or deformed through damage.

Abstract: A mounting assembly for securing a thermal insulating blanket to an end of a heated cylinder in a papermaking machine. The assembly includes a clamp positionable on heads of bolts used to secure peripheral portions of the cylinder end to a cylindrical main body. Each clamp includes a spring-wire fastener element positioned around a bolt head and a hold-down clamp for preventing removal of the fastener element from the bolt head. An insulating blanket has an outer skirt portion provided with grommets engageable with engagement portions of the fastener elements. The inner skirt portion of the insulating blanket is secured to a journal of the cylinder by a hose-type clamping device or other suitable device having an elongate member that is wrapped around the skirt portion, with overlapping ends of the elongate member being secured to each other to securely clamp the inner skirt portion of the blanket to the journal.

Abstract: Tornado flow separator for the thermal treatment of fine-grain or granular material with at least one gaseous medium, including a cylindrical reaction chamber having a surface, two ends and at least first, second and third treatment zones of substantially equal length through which the material passes after given dwelling time, tangential feeding means for the gaseous media being disposed in the surface of the reaction chamber in the treatment zones for setting the dwelling time of the material in the third treatment zone to be at least twice as long as the dwelling time in each of the first and second treatment zones, at least one inclined tangential material feed disposed in vicinity of one of the ends of the reaction chamber, at least one outlet for treatment material disposed in vicinity of the others of the ends of the reaction chamber, and an exhaust pipe for at least one of excess and spent gaseous media being axially extended into the reaction chamber from along side the material outlet and having a f

Abstract: A sole for an athletic shoe, such as a cleated soccer or football shoe, comprises a thin, unitary member formed of flexible material. The member has a contour or configuration which renders the flexible material substantially rigid at the arch and heel portions of the sole. This provides substantial support to the arch of the foot. Cleats may extend from the toe and heel portions of the lower surface of the sole member.

Abstract: A ski boot including a shell base with a sole on its bottom, and a calf, the calf being adapted to accommodate the leg of a skier and being pivotably mounted to the shell base along a first pivot axis. The shoe further includes at least one vertical extension extending from the shell base, the calf being pivotably secured along a second pivot axis on the extension.

Abstract: Adjustable-length, golf spike receptacles and anchoring strip combinations for use in soles of various sizes and widths comprise (1) an elongated strip of thin, flexible material and (2) a pair of golf spike receptacles which are attached, one at each end to the elongated strip. The golf spike receptacles comprise (a) an internally threaded sleeve or cylinder for receiving the threads of a golf spike and (b) a base plate to which the sleeve is attached at about a right angle to its axis. The base plates of the golf spike receptacles are attached to the ends of the elongated strips by attaching means in a manner such that at least one plate and preferably both plates are rotatable about the attaching means. In a further embodiment one or both the attaching means are slidably movable in elongated channels provided adjacent to the ends of the anchoring strip.

Abstract: Arrangement of equipment such as excavator buckets (1) mounted on excavating machines and similar machines, where the equipment is mounted on an attachment (7) provided for fastening to the machine arm by means of a shaft (8) in such a way that the equipment (1) can be rotated in relation to the attachment. The attachment (7) has a spigot (9) which is located eccentrically in relation to the shaft (8). The equipment (1) has a spigot (11) which is located some distance from the said rotating shaft. A first link (18) is swivel-mounted at the spigot (9) on the attachment and a second link (19) is swivel-mounted at the spigot on the equipment. At the ends which are not mounted on the said spigots the links are swivel-mounted to each other.

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 on 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 compact snow removal apparatus for continuously removing snow from a generally horizontal surface. The snow is then compacted to substantially remove all air and reduce it to ice or an ice-like substance. The apparatus employs several steps to achieve the compaction. By addition of accessories the ice pieces may be tossed to the side, stored in a container within the apparatus or conveyed to the box of a truck to which the snow removal device is attached or adjacent.

Abstract: An apparatus for ironing laundry which comprises a heated, rotatable cylinder for pre-drying laundry to be ironed which is situated in an enclosed area to conserve heat. Laundry is directed around this pre-drying cylinder by a complementary pair of guiding conveyor belts and is then transferred to at least one cylinder and corresponding mangle trough for ironing. Laundry is directed through the mangle troughs and cylinders by means of an additional guiding belt.

Abstract: A portable, easy to use photographic viewer for use particularly by medical and dental professionals when required. The viewer is light weight and includes a light source, a photographic imaging screen, clip to retain the photographic slides or negatives in position and a support for maintaining the viewer in any desirable position.

Abstract: A display panel for a vending machine including the capability of adding promotions, advertising, and special equipment such as electronic and video games to the existing vending machine. A utility module for containing one of these devices is located on the display panel of the vending machine and is so positioned so that it optimizes a combination of criteria including space, circuitry location, a prominent spot for display purposes and a location enabling easy retrofit of the utility module into a vending machine unit.

Abstract: A cylindrical display for bus scheduling and the like including a number of semi-cylindrical plastic sections and suitable retaining means for securing the various sections into a unified whole.

Abstract: The invention concerns a lock means comprising a lock bolt (1) and a lock frame (3). The lock bolt comprises a crank (2), a closing shoulder (4) for securing to be held by a mating shoulder (27) on the lock frame, and a striking pin (5) with spring (6), and cocking body (7). The object is to provide a new lock means of which the design makes possible its easy and inexpensive manufacturing and accurate fitting into the lock frame. A further object is to provide a crank lock and lock frame which is reliable in service, accurate and inexpensive.The lock means in characterized in that the lock comprises a guide tube (11) which constitutes the outer cover for the lock bolt (1). The guide tube is rotatable with reference to the lock bolt (1). The shape of the inner surface (12) of the lock frame (3) conforms in its cross section to the guide tube, and the tube cannot be evaded with reference of the lock frame. The guide tube is profitable at least plastic-coated, preferably made mainly of plastic in its entirety.

Abstract: The invention concerns an automatic safety device for handguns and especially for self-loading pistols, in which a longitudinally movable firing pin is secured positively by a spring-loaded safety member which, on the one hand, is carried in a recess in the weapon and, on the other, engages in a transverse recess in the firing pin. For the release of a shot, the safety member is forced out of the firing pin area by the trigger before the release of a hammer. In order to achieve an enhanced security against unintended release, e.g. through shock or fall of the weapon, as well as a more economical production, the safety member is in the form of a rocker which engages in the firing pin with an arm and is preferably accommodated in a slot in a bolt, in some cases rotatable, arranged at right angles to the weapon.

Abstract: A method of using standard commercial shotshells in a non-standard chamber is disclosed. The non-standard chamber is at least 1/2 mm larger in diameter than the shell of a continuous axial length of at least 3 mm immediately forward of the rim breeching bevel. By conventional standards this would appear to be unsafe yet the method has been determined to be quite safe and allows commercial shotshells to be used in a chamber designed for combat shotshells which will not fit into standard commercial shotgun chambers of similar gauge size.

Abstract: A locking, quick-detachable-type firearm sling swivel having a gate which is shiftable, under the influence of a spring-biased plunger, between open and closed positions to enable mounting, demounting and securing of the swivel on a mounting base. Provided for locking the plunger positively and selectively against manipulation to effect opening of the gate is a position-changeable locking element mounted on the plunger for adjustment into and out of effective reactive engagement with the swivel's body. The locking element is captured on the plunger to prevent its inadvertent removal.

Abstract: A lineguide includes two longitudinally slotted sleeves 18 which fit on a fishing rod. These sleeves have apertures 16 and 22 extending transversely through them. The aperture 16 is circular and the aperture 22 is a slot extending parallel to the longitudinal axis of the sleeve 18. A line housing 20 has two leg mountings 24 each having two transversely spaced limbs to straddle the apertures 16 and 22. The leg mountings 24 are pivotally mounted in their respective apertures by pivot pins 26. When the rod flexes one pivot pin 26 moves along its slot 22 taking up the change in spacing between the sleeves 18 and thereby reducing any stiffness in the rod 8 between the sleeves 18.

Abstract: A housing is disclosed for an insect killing assembly of the type having an elongated light source protruding downwardly from a mounting shelf. The light source is surrounded by an electrically conductive grid supported by legs depending from the lower surface of said shelf. The light source and the grid are energized by an A.C. source via circuit components including a voltage augmenting transformer carried on the top surface of the shelf. The housing includes an open-ended enclosure surrounding the insect killing assembly. The enclosure is defined by a pair of separable half-sections which are each provided with an array of holes through which insects may pass as they are attracted by the light source onto the energized grid. A removable base closes the lower end of the enclosure. A one-piece water impervious cover is detachably mounted to the upper end of the enclosure. The cover cooperates with the half sections and the mounting shelf to isolate the circuit components from external moisture.

Abstract: A set of polygonal panels with novel interlocking flaps for the construction of various structures, such as buildings desk sets and the like. The panels are shown as rectangular and triangular, for illustration purposes, but may be of other polygonal shapes. Each panel has flaps along its sides, each flap having a wide central slot and two narrow adjoining side slots. When flaps of adjacent panels are placed in superimposed matching relationship, a pair of locking elements having radial grooves are introduced singly into the center slots and are separately moved into the side slots to firmly lock the adjacent panels by two locking elements, one in each of the side slots.

Abstract: A toy having two portions mountable to one another in two relative configurations, is disclosed. In a first configuration the toy effectively simulates a person, toy character, figure, animal or the like in a substantially upright standing configuration. The toy has a pair of wheels mounted to a lower portion thereof. In a second configuration which is attained by pivoting the two portions relative to one another about an axis substantially normal to the general longitudinal axis of the toy, an additional wheel is exposed for contact with a support surface, and the toy simulates a toy vehicle capable of locomotion on the support surface. In the second configuration the toy also simulates a person, toy figure, character or the like disposed in a prone configuration on the support surface.

Abstract: A new apparatus for the application of liquid chemicals to plants is disclosed. Plants are treated by selectively contacting a wick saturated with chemical solution. As the chemical is deposited on plants, the solution in the wick is replenished by gravitational flow and capillary action from a reservoir at the upper end of the diagonally-positioned wick. Excess chemical not applied to plants is dripped from the lower end of the wick into a collection reservoir from where it can be recovered and recycled for reuse. Adequate mounting and support is provided for all the salient parts to allow for positioning and portability.

Abstract: A method and means of securing a plant pot to its shelf. This method and means includes a bracket which is placed inside the pot and has a portion extending through the drainage hole of the pot. A threaded screw hook extending through the shelf is hooked to the bracket and held in place with a washer and nut.

Abstract: Derivatives of 2-imino-1,3-dithiolane, 1,3-dithiole, 1,3-dithiane, 1,3-dithietane and 1,3-oxathiole have been found to reduce herbicidal injury to crop plants due to thiocarbamate and acetanilide herbicides.

Abstract: A tree clamp, for use with a forklift truck for lifting and supporting the ball of a tree, includes a pair of essentially rigid plate members for disposition one each adjacent opposite sides of the ball. Each one of a pair of flexible connecting chains is attached at one side edge near the bottom of each plate member, and is extendable about the ball and connectable with the opposing side of the other plate member. The connecting chains are adjustable in length and cooperate with the plate members to encircle the ball. A pair of brackets is detachably mounted one on each of the forks of the lift truck, and has a hook suspended thereof. Each hook is adapted to engage with a length of chain connected with and extending along the top side edge of each plate member, whereby the plate members and the tree may be lifted and supported.

Abstract: The art of vertical horticulture is improved when plants growing outward from the sides of tall vertical columns are provided with a system that enhances root growth by causing some of the early formed branches to be converted to roots and then by having these newly formed roots grow in a nutrient aerosol environment which applies both liquid chemical nourishment as well as ample aeration to these roots, the required conversion of some branches into the plant's principal root system being accomplished by a vertical shield positioned around early formed branches both to prevent light from reaching the branches after a period of initial branch growth as well as to contain the moisture of the nutrient spray. Outer segments of the branches extend through perforations in the shield and thereby grow into the plant's system of branches and leaves.

Abstract: A door construction for a vehicle, in particular a railway carriage, comprising a one-leaved or two-leaved door which through the intermediary of one or more brackets, secured to a rotatable, vertical shaft, can be opened or closed by rotating said shaft, and a drive means for rotating said rotatable shaft, which drive means acts through the intermediary of a linkage on a first arm secured to said rotatable shaft, and by means of which the door can be locked in the closed position. In the closed position of the door, the linkage can be locked in a single point according to the overcenter closing principle.

Abstract: A panel structure for mounting on any of various enclosures susceptible to explosions or excessive internal pressures, is formed as a self-contained unit mountable in sealing relation to a pressure-relief opening of the enclosure. Disclosed is a one-piece back plate with an integral mounting flange isolating all other frame components from the area in which a sealing function takes place. A peripheral seal on the closure panel exerts pressure against the back plate in a normal position of the closure panel, in a direction parallel to the lines along which internal pressure is exerted against the closure panel, thus providing an efficient seal about the entire periphery of the relief opening, without the necessity of precisely dimensioning the sealing gasket and frame components at the locations where they are interfaced for sealing engagement. The gasket includes side-by-side primary and secondary sealing beads, one of which projects forwardly a distance less than the other.

Abstract: An arrangement for guiding and supporting a windowpane is disclosed which is particularly suited for embodiment in association with the windowpanes of a tractor cab. The arrangement includes a unitary guide member with integral biasing means adapted to receive the marginal edge portion of a windowpane. The unitary guide is adapted for operative engagement with a support channel or track for slidable movement of the windowpane and guide together within the track. Retention means are provided to prevent undesired disengagement of the unitary guide from the support track. The track and unitary guide are preferably extruded elements which are formed from resilient material to effect the desired biased engagement of the guide with the track, and to accommodate fabrication and assembly of the arrangement.

Abstract: A window guide and seal for a lowerable window in a motor vehicle of which the plane of the window is in alignment with the external surface of the bodywork and which is connected at its edges with edge strips forming inward rebounding rims which interact with guideways and sealing strips disposed in the frame opening, the window (4) is firmly connected only at its lateral vertical edges (5 and 6) with guideways (7 and 8) and at its upper inclined and horizontal edge (9) interacts with a sealing strip (10) fixed in the frame opening (3). The guideways (7 and 8) fixed at lateral vertical edges (5 and 6) here have an S shaped profile and encompass with their narrower section (14) the vertical edges (5 and 6) of the window (4) and slide with their wider section (15) on an edge protection guideway (25) or in a sealing and guiding track (18). The guideways (7 and 8) are here preferably clamped at the edges (5 and 6) of the window (4).

Abstract: In a grinding or milling machine an improved clamping arrangement for holding one end of a tool blank having a portion with at least four sides in cross-section. The other end of the tool blank is held against a stationary holding member. The clamping arrangement includes a housing which is coaxially mounted on a drive shaft. A pair of clamping members are reciprocally mounted in the housing and are biased outwardly by means of a pair of coil springs. Each clamping member has a skewed planar surface at its free end. The skewed planar surfaces biasingly engage opposite edges of the tool blank so as to compensate for any misalignment of the tool blank with respect to the holding member and clamping arrangement.

Abstract: A portable and operable wall system utlizing panels extending between a floor and ceiling with a channel-shaped member having seal means thereon along the top and/or bottom edge of the panel with at least one of the channel-shaped members being spring biased into engagement with the ceiling and/or floor to provide an effective, sound, light and air seal between the panels and the ceiling and floor.

Abstract: Apparatus for insulating window openings through walls and the like includes a thermal shutter, a rail for mounting the shutter adjacent to the window opening and a coupling for connecting the shutter to the rail. The thermal shutter includes an insulated panel adhered to frame members which surround the periphery of the panel. The frame members include a hard portion for providing the frame and a soft portion for providing a seal with that portion of the wall adjacent to the periphery of the opening. The coupling means is preferably integral with the attachment rail.According to a preferred embodiment, the coupling means includes a continuous hinge of reduced thickness. The thermal shutter can be permanently attached, hinged, bi-folded, or sliding with respect to the window and wall. A distribution method is to market the apparatus in "kit" form.

Abstract: A metal raceway structure for use in composite, concrete-metal construction including an elongated metal deck having alternating ribs and valleys. A sheet underlies the deck in order to define a plurality of cells. The metal deck has spaced first and second ribs of generally equal height and an interposed third rib of lesser height than the first and second ribs. The ribs may have a top wall and depending sidewalls. The first and second ribs have sidewall openings facing the third rib and the third rib has at least one top wall opening. This permits electrical wires passing through each of the three cells to emerge at a single location generally within the valley between the first and second ribs. A housing member is provided in overlying relationship with respect to the third rib and has openings permitting communication between the interior of the housing and the three cells.

Abstract: A silo is provided with a thickened section along one portion of its circumference and located therein is a passage extending from top to bottom of the silo. This passage opens into the silo by means of an unobstructed opening which also runs from top to bottom of the silo. This opening may be covered by a series of doors which may be automatically opened and closed in conjunction with the silo unloading operation.

Abstract: The protective enclosure is of the type composed of several panels of square or rectangular shape removably assembled to one another. Each panel is generally constituted by a sheet-metal plate whose edges are folded so as to form a stiffening frame bordering the inner surface of the panel and defining, on the side of said inner surface, a space adapted to receive a thermally and/or acoustically insulating material. Each said panel is equipped, on at least three of its edges, with means enabling it to form a rigid assembly with adjacent panels, and ensuring, simultaneously their tightening, their alignment and/or their squaring.

Abstract: A composite floor system includes a plurality of joists, each having a top and bottom chord and a web in the space between the chords. The top chord includes a pair of angle bars, each having a vertical leg of differing heights and a horizontal leg. The top of the web extends between the vertical legs of the chord to a point between or level with the top of the larger vertical leg of the angle bars. Decking is supported by the horizontal legs of the top chord of adjacent joists and a concrete slab poured on the decking and between the vertical legs of the top chord to provide bonding between the concrete slab, top chord and web.

Abstract: A motion bead filler strip for application to the spaced flanged edges of expanded steel lath used in plaster finished walls flexibly seals expansion joints in such walls. The filler strip is an elongated cross sectionally inverted V-shaped outwardly flanged member formed of a flexible synthetic resin, the flanges being inturned toward the V-shape and provided with longitudinally extending ribs on their outermost surfaces. The inturned portions of the flanges define continuous pockets registrable over inturned flanges on the longitudinal edges of conventional expanded steel lath.

Abstract: This disclosure relates to an insulating system which is particularly adapted for insulating the walls, floors, ceilings and like structure of buildings and includes a panel having a hollow chamber or interior under negative pressure (vacuum) and being of a variety of external peripheral sizes and shapes to fit within areas defined by wall and/or floor and/or ceiling studs, beams, or the like, a plurality of springs, chains or the like for supporting the panel in generally spaced relationship to an associated building wall, ceiling, floor or like structure, and a plurality of pin-like elements of relatively small cross-sectional configuration normally spaced from the exterior surface of the panel for contacting a limited exterior surface area of the panel only upon the springs, chains or the like becoming inoperative which would in the absence of the pin-like elements result in direct contact between the panel and the associated building wall, ceiling, floor or like structure and thus reduce the insulating ef

Abstract: A modular member for forming composite false-ceilings comprises two paired mating male and female cylindrical hollow lugs, each pair being provided with locking elements formed with holes for suspension elements, an annular ridge being furthermore provided as a rest for a cylindrical element included for aesthetic purposes or for a closing cap.

Abstract: A device for connecting bricks which have apertures to receive the device is provided. A support shaft of the device supports resilient transverse fins which form an interference fit with the aligned apertures of two adjacent bricks. Stop surfaces on the support shaft engage the respective bricks to ensure penetration of both bricks. Flared ends of the device facilitate insertion and centering of the device within the apertures and provide protection for the fins. During insertion, the transverse fins are deflected inward toward the support shaft and longitudinally toward the stop surfaces. After insertion, the fins are biased outward by their resiliency into engagement with the bricks to lock the adjacent bricks together.

Abstract: The suspended woodbeam ceiling is formed of a plurality of beams which lie spaced from each other and at right angles from each other to receive drop-in ceiling panels therebetween. Each beam comprises a beam center to which is secured a beam side on each side thereof. Each beam side has a lip which is engaged by the drop-in ceiling panel for the support of the panel. Crossbeams have locking clips formed thereon for engaging on and locking on the main beam. The beam contours and textures provide especially aesthetic appearance.

Abstract: A simplified anchor for firmly connecting wood or the like to concrete. The anchor includes a pair of connector elements. One element comprises a fluted concrete nail having the usual head and is made of hard metal. The other element comprises a headless pin of soft malleable metal having a notch spaced from but adjacent one end to form a top portion. The tip of the nail is initially overlappingly joined to the notched top portion of the pin by an encircling retaining band. A hole is drilled through the wood and into the concrete to be joined and to a depth equal to the bottom end of the pin below the notch. The pin is inserted into the hole and the nail is then driven into the hole alongside the pin. When the nail head engages the notched top portion of the pin, the pin breaks away at the notch. The nail is then driven further until its head is engaged with the wood surface and the upper pin tip. During driving, the nail cuts into and deforms the pin within the hole in a tightening action.

Abstract: A building construction comprising a concrete footing in situ having a plurality of metal members extending outwardly therefrom. At least one module for each wall and each ceiling of the construction is formed by bending an open wire mesh in a substantially U-shaped configuration and closing the open end thereof with a joist. At least one core is disposed within each module and the one is maintained in place with wire ties connected to the mesh and extending through the core and spacing blocks between the core and mesh. Each joist is connected to at least one projecting metal member and the modules are connected by interconnecting the joists thereof. A layer of concrete is formed around the mesh and completely surrounding the core and joists.

Abstract: A solar panel is shown for use as a double panel window structure. It has an outer frame formed by an H-shaped extrusion that has one of its outermost legs shortened, and a pair of generally parallel legs or flanges that are inwardly directed of the frame. The outer surface of these flanges are furnished with a dual pressure-sensitive adhesive tape having a width between 1/4 inch and 1 inch. A pane of transparent material is sealed around its periphery into engagement with the adhesive tape for forming a double pane solar panel. Several modifications are also shown for exerting a mechanical locking force on at least one of the panes.

Abstract: A heat control system used in apparatus for packaging articles in a tray by applying a film of thermoplastic material over the articles in the tray. The apparatus includes a plurality of electrically operated heating units successively moving along a prescribed path and adapted to captivate each tray and the film over the articles in the tray between adjacent heating units as the heating units move along a prescribed portion of the prescribed path to press the film against opposite sides of the tray and heat the film to a temperature to cause the film to bond to the tray.