Abstract: A linear drive device has a linear motor which consists of a piston, an output rod and a control rod. The two rods extend through the two end plates of the motor housing. The working or output rod is designed for the transmission of power to some structure. The control rod cooperates a sensor for positioning. The sensor and also a valve arrangement is integrated in the housing end plate associated with the control rod. The valve arrangement controls flow through pressure fluid duct provided in the housing end plate at the control end for actuating the linear motor.

Abstract: A hydraulic booster for a vehicle and more particularly an improved hydraulic booster with improved brake-relieving action, among other improvements.

Abstract: A hydraulic control system in which the flow of hydraulic fluid to and from cylinders on either side of a piston is controlled by normally closed check valves that are opened whenever a control valve is not in its neutral state. Float check valves respectively in series with the check valves and the check valves are opened when the control valve is in a neutral state by pressure from one of the cylinders so as to permit the load to move freely in response to external forces applied to it. A normally closed check valve is provided in which load sense pressures drive it open and pressure from a cylinder is balanced out. A cross check valve is such that the ratio of the areas for driving it open to the area for keeping it shut are at least 35:1.

Abstract: The invention is an assembly of a plurality of relatively movable jointed mbers such as robotic arm segments and a mechanical muscle connected between two of the segments. The muscle has a longitudinally inflexible, radially expandable sleeve containing a pressurizable bladder of elastic material. The bladder enlarges diametrically when pressurized and bulges the wall of the sleeve outward. The sleeve thereupon contracts axially to compensate for taken up by the sleeve's outward bulge. A terminus at either end of the sleeve connects the sleeve to different segments of a jointed arm, so that the sleeve's axial contraction effects movement of one segment relative to the other.

Abstract: An apparatus and method for mounting a guided cylinder includes a wall (C) extending between the bore (A) for accommodating the guide rods in the housing and a mounting surface (B). A mounting bore is carried across the wall having an enlarged section for receiving a head (D) of a fastening in a reduced section (E) for receiving in a fastening member.

Abstract: Apparatus for brewing coffee, tea and other beverages which consists of a lower and upper chamber which move relative to one another. The upper chamber allows the mixing of the coffee and water. The lower chamber has a filter element at the top which allows the coffee liquid to move from the upper chamber to the lower chamber while leaving the residue on the filter element. A piston in the lower chamber forces air through the water and coffee to agitate it and then sucks the coffee liquid through the filter element into the lower chamber. The coffee liquid then exits the lower chamber through an opening in the lower chamber and goes into a cup. The upper chamber then raises and separates from the lower chamber and a wiper blade which is connected to the upper chamber cleans the filter element and pushes the coffee grounds into a residue container.

Abstract: An automatic noodle cooker which continuously and automatically supplies hot water while cooking long thin ingredients such as spaghetti. The noodle cooker comprises a hot-water boiler which is divided into several water storage spaces, for example four, and which allows the supplied water to flow from space to space, and where each storage space is equipped with its own heater. The water supplied to the first storage space is heated by the heater and then moves to the next storage space. The hot water is finally supplied from the last storage space through a hot-water supply pipe to a processing section where the ingredients are processed. If new water is supplied to the first storage space equal to the amount of water which was supplied from the last storage space, the temperature of the hot water in the last storage space does not drop very much due to the fact that there are several storage spaces.

Abstract: This invention relates to a bread baking device, and is intended to attain the objective of providing a bread baking device having no exclusive cooling fan as an extra special part, and enabling low-cost production, by integrally shaping a cooling fan in one piece with a driving pulley mounted on the driving shaft of a driving motor, and by efficiently cooling the generated heat in said driving motor and the frictional heat generated in a belt by circulating air flow in accordance with the revolution of said driving motor.

Abstract: A shower cooker apparatus includes a lower vessel and an upper shower fan for a heated fluid cooking medium such as water. The bottom portion of the bagel or other dough product is bathed in the vessel, while the top portion is showered, for simultaneous cooking of the top and bottom portions. The dough products are carried on a conveyor which is submerged in the cooking vessel.

Abstract: A baking device having surface texturing. The baking surface of a cookie sheet, cake pan, pizza pan or jelly roll pan is embossed with generally rounded protrusions and smaller generally crater-like depressions. These surface features provide the baking surface with a non-stick effect. In addition, the protrusions and depressions provide the baking surface with a scratch and stain resistance resulting from the tendency for the surface features to reduce the visibility of scratches and stains which occur in the upper surface of the bakeware.

Abstract: A continuously operating conching machine (1) according to the invention is divided into a plurality of compartments (10-12) divided by at least one partition wall (8), transfer of the material from one compartment (10-12) to the next being effected via at least one opening (e.g. 16) in the particular partition wall. However, with a conching machine continuously processing the chocolate paste, it is possible expediently to carry out a method according to the invention, in which additives are added only batchwise to the essentially continuously processed chocolate paste, in order to permit more accurate metering.

Abstract: A peeling machine for batchwise peeling of vegetable products comprises a container (6) for receiving the vegetable products and peeling means (14) in the container for removing the peel of the vegetable products during relative movement and engagement between the vegetable products and the peeling means. The bottom of the container is at least partially constituted by a number of rotatable peeling rollers (14) positioned in parallel with each other.

Abstract: An assembly device for binding bunched cables with a plastic fastener having a serrated tension band and a separate locking clasp including a housing for holding a wound roll of the tension band, an exit opening in one end of said housing through which the tension band can be fed, a first guide channel in the housing having an entrance end and an exit end and positioned for feeding the tension band from its roll to the exit opening and a second guide channel located in the housing above the first guide channel for feeding an endless chain of the locking clasps interconnected together by frangible webs to position the locking clasps one at a time in the exit opening so that the tension band can be passed out through the opening in the clasp.

Abstract: A sleeve is provided for a mechanical screw press for expressing liquid from liquid-containing grains and seeds. The sleeve of the present invention is formed with drainage apertures located between longitudinally extending runner portions and includes slots formed in the runner portions adjacent to the drainage apertures. With the use of such slots, uniform screen bars can be used throughout the sleeve and main cage of the screw press.

Abstract: A ram baler (20) having a compression ram (28) with plunger (29) and platen (31). A fixed knife assembly (50) with a first cutting edge (52) is attached to the ram baler (20) and a second cutting edge (42) is attached to the compression ram (28). Platen (31) includes a movable knife assembly (40) for attachment of the second cutting edge (42). The fixed knife assembly (50) includes a pair of adjusting assemblies (80) which allow adjustment of the vertical spacing between the first cutting edge (52) and the second cutting edge (42). This adjustment can be accomplished without disassembly of the components of the ram baler (20).

Abstract: A self-oscillating roller assembly (10, 10A, 10B, 10C, 10D) with an oscillating shaft (54) mounted on translational bearings (58, 60) to slide along a stationary shaft (48) and with a rotary shaft (55) mounted to the oscillating shaft (54) on rotational bearings (80, 82) to provide rotational movement. A key assembly (62, 63, 64, 66) restrains the relative longitudinal movement between the oscillating shaft (54) and the rotary shaft (55) while a pair of springs (68, 70) provides bias to return the rotary shaft (55) and oscillating shaft (54) to a preselected home position.

Abstract: An offset blanket for a grooveless blanket cylinder for applying a printed image onto web material or sheet material is composed of a carrier plate which has been cut to size and a rubber layer placed on the carrier plate. The beginning and the end of the carrier plate of the rubber layer are connected to each other so that the outer circumferential surface of the blanket is continuous and without gaps. The blanket surrounds the blanket cylinder in the operating position in the form of a sleeve in a frictionally engaging manner but releasably. A register device is provided on at least one end face of the blanket for securely positioning the blanket on the blanket cylinder.

Abstract: To permit ready exchange of the length of printed subject matter to be reproduced, particularly to make packaging cartons, the cut-off size of printing cylinders, as well as blanket cylinders of an offset machine is constructed, can be changed in this manner: The respective cylinders include a cylinder shaft (44, 45) on which a lightweight cylinder sleeve (3, 3a, 4, 4a) of different circumferential size can be placed.

Abstract: Techniques for imaging lithographic printing members responsive to the output of laser devices. Laser output passes through at least one discrete layer and ablates one or more underlying layers, resulting in an imagewise pattern of features on the printing member. The image features exhibit an affinity for ink or an ink-abhesive fluid that differs from that of unexposed areas.

Abstract: A shock tube initiator comprises a plastics tubing having an unobstructed axial bore, said tubing having throughout its length an inner surface, and unconsolidated reactive materials provided upon said surface as a loosely adherent dusting of shock-dislodgeable particles at a core loading sufficiently low to avoid rupture of the tubing in use, wherein said reactive materials comprise fuel particles selected from the group consisting of metals, quasi-metals and non-metallic fuels, and, as oxidant, at least about 20% (by weight) of ammonium perchlorate, preferably up to about 99% (by weight) ammonium perchlorate.

Abstract: A vehicle occupant safety restraint gas generator is provided in which the ignition system for the propellant comprises a pyrotechnic layer (22), e.g. a reactive film, preferably comprising a substrate of oxidizing polymeric film such as polytetrafluoro-ethylene (PTFE) having at least a portion of its surface covered with a layer of oxidizable material, for example magnesium, which may be vapour-deposited on the surface. The propellant is preferably a propellant train (12, 14, 16, 18) which comprises a plurality of adjacent propellant grains such as toroidal discs which surround the pyrotechnic layer or are completeley encased thereby. The gas generator is simpler and more economical to manufacture, and has improved safety during use.

Abstract: Carrier system for a mobile device positionable in various directions in space, such as a directive light source, including a trolley which can move along a guide ramp. The ramp includes two helical rails turning about a given longitudinal axis, and the trolley includes a pair of axles with parallel axes holding the ramp therebetween. Each axle is provided with a central body engaging with an associated face of the ramp by wheels capable of running the ramp and guiding the axles when the wheels move along the ramp, with which the wheels are held in contact by an elastic connecting member pulling them towards each other. The light source is fixed to the central body of one axle, and the central body is coupled in rotation with the wheels of the axle.

Abstract: In a traveling inspection robot system, two carriages are each provided with one pair of guide rollers for guiding the travel in the vertical direction and two pairs of side rollers for guiding the travel in the horizontal direction. The two pairs of side rollers are arranged such that one pair locates on each of the front and rear sides of the pair of guide rollers as viewed in the direction of advance. The two carriages are interconnected by a coupling plate through parallel steering shafts, and a sprocket and a motor for driving the sprocket are provided as travel driving device on one carriage for giving a traction force to a transversely central portion of the upper inner surface of the monorail. An antenna and a current collector are provided on the other carriage. A control circuit unit and a span and tilt mechanism are attached to the coupling plate with a sensor unit mounted to the span and tilt mechanism.

Abstract: A method of securing a liner or inlay in an opening of a case surrounding a shaped explosive charge on all sides except for the opening, the opening facing the direction of the intended effect of the charge. The liner or inlay defines the shape of the charge in the direction of the intended effect of the charge. The method comprises immovably securing the liner or inlay in a direction parallel to the direction of the intended effect of the charge, and simultaneously resiliently securing the liner or inlay in a direction orthogonal to the direction of the intended effect of the charge, whereby a clearance is exists between an outer edge of the inlay or liner and an inner wall of the case.

Abstract: A device is provided which safely simulates the loud noise and bright flash of light of an explosion. This device consists of an ordnance case which encloses a battery, an electronic control module, a charging circuit board, a bridge head, and a shock tube dusted with aluminum and an explosive. The electronic control module provides a time delay between initial activation of the device and the time when the device is ready to create a shock wave. Further, this electronic control module provides a central control for the electronics in the simulator. The charging circuit board uses the battery to charge a capacitor. Passing the voltage stored in the capacitor through the wires of the bridge head causes the explosive and the aluminum in the shock tube to react. This reaction produces a loud noise and bright white flash of light which simulates an explosion.

Abstract: A bogie or truck for high-speed rail vehicles or railway cars includes an H-shaped bogie or truck frame, primary springs cushioning the bogie frame, and a lateral bolster being movable relative to the bogie frame, receiving a coach or car body and being cushioned relative to the bogie or truck frame by air springs. The object is to provide a bogie with a low number of contact points with the coach body, which allows a configuration for rotational retardation, which has a minimum structural width and low weight, which permits small air spring bellows, which allows the installation of additional air reservoirs for the air springs below the lateral bolster and which has additional assemblies disposed at locations which keep the bearing components free from bending or torsional stresses. According to the invention, each air spring is supported directly on the side wall of the bogie frame.

Abstract: A weld support (50) for use with a center sill assembly (16) for supporting a cradle pad (12) used to support the end of a railway tank car body (B). The center sill assembly includes first and second spaced apart side plates (18, 20) spaced to either side of the car body, and a top plate (28). The weld support comprises first and second support members (52, 54) installed on opposite sides of the assembly. A pocket (56) is formed in the center sill assembly on each side thereof. A respective weld support member is attached to the top plate adjacent the respective pockets, for the weld support members to extend above the upper surface of the top plate. The weld support members each provide a substantial contact surface with the cradle pad. Each weld support member also helps pool welding material in the respective pockets to effect a strong weld between the cradle pad and center sill assembly.

Abstract: The present invention relates to a walking robot. The robot includes: an X-elongated member; a Y-elongated member; a moving body moving on the X- and Y-elongated members; an X-leg section provided to the X-elongated member, the X-leg section being capable of extending and shortening in the Z-direction; a Y-leg section being provided to the Y-elongated member, the Y-leg section being capable of extending and shortening in the Z-direction; an X-driving mechanism for moving the moving body in the X-direction; a Y-driving mechanism for moving the moving body in the Y-direction; a first Z-driving mechanism for extending and shortening the X-leg section; and a second Z-driving mechanism for extending and shortening the Y-leg section. With this structure, the robot is able to stride over obstructions by extending the X- and the Y-leg sections so as to avoid interference without changing course.

Abstract: A portable pallet assembly which is made up of two or more lightweight, moldable plastic modules of high structural integrity which are interconnected by novel interconnection mechanisms. The modules can be connected in a side-by-side relationship to form a rigid pallet assemblage having a substantial surface area. Alternatively, first and second modules can be connected in a side-by-side configuration to form a first assemblage to which a second assemblage made up of third and fourth interconnected modules can be connected to form a rigid, double layer pallet construction. Additionally, individual booster units can be connected to raise the assemblages sufficiently to permit the forks of a forklift truck to be received beneath the article supporting surface of the assemblage.

Abstract: A wooden upper deck is connected by two types of plastic spacer blocks to a wooden lower deck. The upper deck may be a conventional deck composed of stringers and slats or it may be a twin sheet thermoformed plastic deck. The lower deck is composed of stringers which underlie the plastic spacers and tie boards which abut the ends of the stringers. Connector spacer blocks serve both to join the upper deck to the lower deck and to connect the stringer boards to the tie boards. The stringers and tie boards are held in fixed relation by bolts which join the upper and lower decks passing through sockets in the spacer blocks. The stringers and the tie boards are bolted to the spacer blocks and are thus joined. The joint between the stringers and the tie boards may be strengthened by means of a metal link overlying the stringers and tie boards and linking the bolts together.

Abstract: A plastic pallet has a twin sheet thermoformed upper deck reinforced with a tubular metal substrate. Injection molded plastic octagonal posts have support member walls which are positioned beneath reinforced portions of the top deck. The posts also have a sleeve with a central bolt hole which is parallel to the support member walls. A twin sheet thermoformed lower deck is spaced from the upper deck by the posts and receives the posts in recessed pockets. Plastic bolts are inserted through the top deck, each post, and the bottom deck and are held in place by plastic T-nuts. The pallet is sealed against entry of liquid into the interior space of the pallet and may be stored on a flat surface or elevated on a rack.

Abstract: A hydrated granular fly ash composition is disclosed. The granular fly ash may be transported with minimal dust problems while maintaining its capacity to act as a solidifying agent at a remote destination. The process for producing the fly ash involves evenly dispersing a pre-determined amount of water into the fly ash so that it is transformed into a granular form substantially eliminating dust production. An apparatus for processing the fly ash includes a hopper for receiving the fly ash, a conveyor and a modified conditioner in which the fly ash is hydrated.

Abstract: Damper apparatus for air ports of a chemical recovery furnace is mounted on a removable windbox faceplate. Damper blades extend from cantilevered arms pivoted at the forward side of the faceplate, with the damper blades being otherwise unsupported, i.e., they are not confined to travel in tracks within the windbox. Rather, a spring or counterweight urges the damper blades against the air port opening whereby the whole mechanism is free for removal as a unit with the faceplate. Cooperatively operable air port cleaning apparatus is also mounted on the faceplate.

Abstract: An oven for cleaning parts by a pyrolytic burn-off process is fired by a primary burner which heats the oven chamber from the top downwardly and the combustion gases, along with pyrolized volatile constituents, are withdrawn from the lowermost portion of the chamber and into an afterburner for final decomposition and discharge into the atmosphere.

Abstract: A pellet fuel burning heating unit having a firebox with a burner therein connected to a combustion air duct, an exhaust pipe to remove combustion gases from the firebox, a blower to provide combustion air and a pressure regulator and air splitter to divide the air flow from the blower into the combustion air duct and into the exhaust pipe. The air flow into the combustion air duct creates a positive pressure in the burner and the air flow into the exhaust pipe creates a suction of the exhaust gases in the firebox.

Abstract: A grass planting apparatus which is adapted for connection to a tractor or other motor vehicle and which is well suited for no till operation in the planting of warm season and other Grasses is disclosed. In one embodiment, the apparatus includes a frame having mounted thereon a forward set of cutting coulters, a rear set of planting coulters and a set of furrowers positioned at the mid-portion of the frame. The planting coulters are employed in conjunction with a set of agitator feeders which may be in the form of elongated kicker tines. A feeder trough for the grasses to be planted has openings therein to receive the planting coulters and for passage of the grass materials through the bottom of the trough.

Abstract: A seeding system includes a frame mounted on ground wheels for moving across the ground together with a plurality of individually mounted seeding elements carried on parallelogram linkages from the frame. A seeding element includes a walking beam arrangement having a single front wheel and a pair of rear wheels straddling the seeding sweep positioned between the front and rear wheels. The rear wheels act as packer wheels for two rows of seeds. The walking beam system lifts a main support frame of the seeding element against the bias from a pressurized controlled hydraulic cylinder. The seeding sweep is mounted upon a trip shank. The seeds are supplied through a tube which splits at the sweep to deposit the seeds into the cavity within the sweep on either side of the center line of the sweep. A fertilizer banding knife projects downwardly and rearwardly from the lower end of the shank to a position rearwardly of the sweep.

Abstract: The friction coefficient between a track projection of an inner bobbin case holder and a track groove of an outer loop taker is reduced so that the outer loop taker can be rotated a small torque. One portion of the inner bobbin case holder opposite to a needle location is made of a synthetic resin or a synthetic resin containing metal powder carbon fiber, glass grains, ceramic powder or the like.

Abstract: A novel stable inflatable or inflated sail board is provided. The sailboard includes a plurality of discrete, gas-fillable or gas-filled, elongated chambers, each chamber having a top skin and a bottom skin, each chamber, when inflated being sufficiently rigid to maintain its shape without any additional support, and to provide a flat bottom surface for contact with water, the chambers being integrally united to provide an elongated float which is of greater length than width. The sailboard also includes a supporting and stiffening rigid frame comprising a plurality of frame sections which are interconnectable with each other in a longitudinal direction, the frame supporting the floatation member and providing additional stiffness and resistance to fore-and-aft bending and torsion.

Abstract: A keel assembly for a sailboat includes a base portion which is integrally formed with the underside of the hull of the sailboat, a keel portion which is adapted to be releasably received in assembled relation with the base portion, and a plurality of fastening element assemblies for securing the keel portion to the base portion. The fastening element assemblies include downwardly extending threaded rods which are permanently secured in sealed nonrotatable relation in the base portion. The threaded rods have flanges thereon which are received in nonrotatable relation in recesses in the underside of the base portion. The threaded rods are received and secured in downwardly extending fastening element passages in the keel portion which are accessible through transversely extending access passages in the keel portion.

Abstract: A positive-action device for bringing about the rotary movement of a hatch, as a result of the traversing stroke of a shaft moving axially within a fixed structure, particularly in submarine turrets, includes an actuating component integral with shaft and moving with the latter in a direction parallel to the longitudinal axis of the shaft, and an articulated kinematic mechanism the upper end of which is hinged to hatch with an interposed flexible safety device and the lower end of which is rotationally integral with a regulating component rotating around the axis of a fixed pivot, there being associated with the regulating component a mechanism of bistable type for reliably maintaining the settings corresponding to the open and closed positions of the hatch, and end-of-stroke devices.

Abstract: A portable manual boat hull cleaner is disclosed in which a plurality of cleaning loops are attached to a strap having handles at either end, said cleaning loops comprising support pads sandwiched between a strap and a detachable scrubbing pad by two anchor flaps. The cleaning loops are placed at regular intervals along the length of the strap. The entire cleaning device may be placed beneath the hull of a boat and moved back and forth in the manner of a shoe shine rag to remove marine growth from the submerged surface of a boat hull.

Abstract: The present invention is an improved boat hull construction, in particular for power catamarans. The individual hulls incorporate step breaks to define individual planing sections with different constant deadrise angles. Twist or warp is thereby eliminated in these sections, reducing drag and increasing efficiency. The step breaks also allow individual outboard chine flats which reduce in width from aft to fore. The catamaran tunnel features a decreasing section to compress air and provide a cushioned ride.

Abstract: A power boat hull has an inner running surface with a central running surface and an outer running surface that flanks the inner running surface. The outer running surface forms a channel with concave curvature which extends from the bow to the stern. An improved channel is shaped so that pressure builds in the channel during turning of the boat to lock the hull to water throughout the turn. A transom is provided with a deflector plate having a curved surface that is lifted out of the water during high speed running of the boat and operatively deflects water downward to force the bow of the boat into the water during low speed running of the boat. The transom dimensions are altered to accommodate varying length boats.

Abstract: Method and apparatus for rearing insects is disclosed. Information concerning the physical and dietary needs of the insect as well as behavioral characteristics are utilized to maximize the number of larvae reared per unit surface area of diet and per unit of rearing area while minimizing the amount of labor and materials required. An enclosed rearing unit is provided which can be located within an appropriate environment for rearing the insects. There are three sections within the rearing unit: 1) a diet space, 2) a larval space, and 3) a frass space. The diet space includes an appropriate diet medium for the insects. The larval space is located below the diet space and includes a series of vertical partitions perpendicular to and in contact with or nearly in contact with the diet medium such that the insect larvae are able to disperse themselves over the partitions.

Abstract: A method of bovine herd management based upon a dynamic mathematical model. The method gathers data on milk production on a periodic or routine basis for each cow in the herd. The data includes factors denoting both the quantity and the quality of the milk being produced. A database for each cow is established and continuously updated. A mathematical herd management model is used to establish the database, wherein the gathered data is then modified and used to interpret and determine the actual productivity of each cow in the herd for that test day. Using this data, a manager of the herd can then breed those cows having a capability superior to their associates in the herd. Likewise, the less productive members of the herd can be culled or eliminated from the herd. Another aspect of the invention includes the use of the database to quantitatively assess the effect of change, including changes made in formulas, in environmental conditions and in breeding practices.

Abstract: A transportable animal sustenance dispensing device is resistant to spillage, requires less filling, and is easily attachable to a variety of crates. The sustenance dispensing device comprises a reservoir for storing sustenance; a sustenance container which receives sustenance from said reservoir, said container being movable between a closed container position in which said container is resistant to sustenance spillage and an open container position in which said sustenance is accessible by said animal; and a spring biased valve for controlling flow of said sustenance from said reservoir into said sustenance container. An animal sustenance dispensing device of the present invention further comprises a connector for attaching the dispensing device to an animal containment device.

Abstract: A portable hair collecting furniture device for cats includes an open ended rigid housing having a C-shaped partially cylindrical top portion and a planar floor portion. A first material with a plurality of raised rubberized protuberances on its exterior surface is located upon the interior of the device with the protuberances oriented toward the interior of the device. A compressible second material having a plurality of compressible parallel ribs overlies the floor. A flexible carrier is used in conjunction with the device includes a carrier top portion joined to a carrier floor portion with two housing ends opposite one another and joined to the floor portion. One of the ends is releasably closed with a zipper and has a perforate panel. A pair of handles affixed to the top portion. A safety strap is centrally positioned on the exterior surface of the top portion of the carrier. A kit utilizing the cat carrier and the cat furniture device is also provided.

Abstract: A cross member for use as an avian or animal perch or as a support member for additional cage accessories. The cross member comprises an elongated beam member removably attachable to opposing sides of an open wire or bar cage via corresponding open slots at opposing ends of the beam member and which are slightly offset from parallel to one another.

Abstract: A pet perch for attachment to a window sill or other support surface comprises a generally rectangular frame defining a central opening, and a jacket for encasing the frame and covering the opening to provide a soft, hammock-like pet resting area. A pair of adjustable mounting brackets secures the frame to the window sill. The brackets engage channels formed in the undersides of the frame and two series of first holes extending along opposite sides of the frame. The series of first holes provide alternative fastening locations, so that the perch can be used with different depth window sills.