71results about How to "Easy to collect and transport" patented technology

The invention provides a scrap iron collecting and conveying device. The scrap iron collecting and conveying device comprises an annular-shaped conveying belt; a plurality of magnets which are uniformly distributed are arranged on the conveying belt; the magnets are fixedly connected with the conveying belt; a protective cover which is made of magnetic impermeability materials is arranged outside the conveying belt; the shape of the protective cover is matched with that of the conveying belt; the upper surface of the protective cover is smooth; accordingly, when scrap iron falls on the protective cover, the scrap iron on the protective cover moves forward along the conveying direction of the conveying belt under the suction function of the magnets, so that the scrap iron, particularly the fine particle-shaped scrap iron is collected and conveyed outward along the conveying direction of the conveying belt. The scrap iron collecting and conveying device has the advantages of being convenient and rapid to collect the scrap iron and convey outward, enabling the environment in the machining site to be clean and tidy, effectively avoiding being influenced by the scrap iron, avoiding breakdown and accordingly guaranteeing long time normal operation.

The invention discloses a culturing method for orchid. Through hardening tissue culture vessel seedlings in a seedling-hardening substrate, and middle and big seedlings are obtained through one or more years of culturing and then planted into a culture medium to be cultured, so that adult seedlings of the orchid are obtained. The culturing method and the substrate have the advantages of good water retention, fertilizer maintenance and moisture preservation; cleanness is achieved in the using process, harmful bacteria are not prone to being generated, good growth of the seedlings is guaranteed, and the growth of the orchid is facilitated; the substrate is made of agricultural waste, is ecological and environmentally friendly and saves the cost. The substrate increases the survival rate of hardened tissue culture seedlings of the orchid, the transplanting survival rate reaches 95% or above, growth speed is high, and the seedlings start to take root and come into leaves about 30 days after transplanting. The growth of the middle and big seedlings is promoted, the uniformity of the seedlings is improved, blooming is advanced, potting quality is excellent, and the production cost is lowered. The culturing method has the advantages that the production period is short, the production cost is low, air permeability and water permeability are good, and collecting and transporting are facilitated; the agricultural waste is effectively utilized for reducing deforestation, and therefore the environment is protected.

The invention discloses a waterless and environment-friendly manure collection toilet storing urine and shit separately. A bottom box is arranged; containers for storing urine and shit are arranged in the box; a box door is arranged on one side of the box, defecating and urinating openings and covers are arranged on an upper plate of the bottom box; a urine collection funnel is arranged below the urinating opening; an exhaust pipe and an exhaust fan are arranged at the upper part of a side plate of the bottom box; an upper surrounding plate and a switch door are arranged above the bottom box; steps are arranged beside the bottom box below the switch door; a ventilation fan is arranged at the upper part of the upper surrounding plate; peripheries of box plates and the door of the bottom box are sealed, and peripheries of the covers of the defecating and urinating openings are also sealed; sealing covers controlled by switches are arranged at upper ports of the containers for storing urine and shit, and the covers of the defecating and urinating openings are sealing covers controlled by switches; a front pedal indicating platform, a rear pedal indicating platform and a pedal switch are arranged on the upper plate of the bottom box; and plastic bags are arranged in the containers for storing urine and shit, and a seat support and a disinfecting deodorant sprayer are also arranged on the upper plate of the bottom box. The waterless and environment-friendly manure collection toilet is suitable for construction sites, country areas, water-deficient areas and even water-deficient cities, the structure is simple and complete, the use is convenient, the cost is low, and functions of saving water, protecting environment and collecting manure are particularly prominent.

The invention relates to a device for recovery treatment of organic wastes based on the internet of things. The device comprises a main body, a feeding pipe, a discharging opening and a moving wheel,a stirring mechanism and a drying mechanism; the stirring mechanism comprises a first motor, a stirring barrel, a second motor, an air cylinder and multiple stirring blades; and the drying mechanism comprises a cutting assembly and a drying assembly. According to the device for recovery treatment of the organic wastes based on the internet of things, through the stirring mechanism, the organic wastes such as vegetable leaves can be uniformly crushed, so that the effect of preliminary dewatering is achieved; through the drying mechanism, the wastes are further crushed and dried, through dryingof the wastes, and moisture wastes can be prevented from breeding bacteria and generating peculiar smells; and the dried vegetable leaves can be used as animal feed, organic fertilizers and biogas tobe used for generating electricity; and therefore the utilization rate of the wastes is improved, the economic value is created, and the practicability of the recovery treatment device of the organicwastes is improved.

The present invention relates to a cutting device, in particular to a section cutter used for the art of CMC pulp plate materials and rubber plank stuff. The section cutter is provided with a pair of drive rolls and a driven roll meshed on the upper edge and the lower edge for cutting the plank stuff into strips; the discharge sides of the drive roll and the driven roll are provided with a spiral cutting roll; a stable blade is arranged horizontally between the drive roll and the spiral cutting roll; the spiral cutting roll is provided with a movable blade matched with the stable blade for cutting the strip materials into square slice materials. The cutting device provided by the present invention has the advantages of simple operation technique, higher automation degree, no indoor dust, energy saving, environment protection, regular shape of the finished product after cracking, convenient collection and transportation, less device investment and high working efficiency.

The invention discloses a rotary log-periodic antenna capable of being unfolded and folded automatically. The antenna comprises a bottom turntable system; an antenna support is arranged on the turntable system; the antenna support comprises an unfolding and folding mechanism; a spiral elevator, a guide rail and a sliding block are arranged in the unfolding and folding mechanism, a pull wire rod isinstalled at the top of the unfolding and folding mechanism, roots of four shear fork type supporting trusses formed by assembling square pipes and pin shafts are installed on four side faces of theunfolding and folding mechanism respectively, the middle portions are connected with the unfolding and folding mechanism through pin shafts, and every two supporting trusses are opposite to form a cross shape. The rotary log-periodic antenna capable of being unfolded and folded automatically disclosed by the invention is simple in design method principle, feasible in technology and convenient to apply. Compared with an original antenna mode of manual disassembly and assembly, the antenna is rapid to unfold and fold, few in operation personnel, small in size after being folded and easy to storeand transport.

The invention relates to the technical field of waste collection and transportation and discloses a waste bin information-based waste collection and transportation method. The method comprises the steps of obtaining usage information of waste bins; according to a preset route, weighing the waste bins placed in a target region through weighing systems of waste collection and transportation vehicles to obtain weight information of wastes contained in the waste bins; recording the weight information and the usage information of the waste bins in an information recording end, uploading the information to a server, and sending driving information and route information of the waste collection and transportation vehicles to the server; and displaying and analyzing the weight information and the usage information of the waste bins and the driving information and the route information of the waste collection and transportation vehicles. According to the waste collection and transportation method, the usage information and the weight information of the waste bins are combined, and the operation of manually combining and recording the usage information and the weight information of the waste bins is replaced, so that the method is intelligent and accurate; and the collection and transportation costs can be reduced and the collection and transportation vehicle quantity in a job can be reduced.

This invention is a new design for an animal waste collection and disposal device, as set forth in this specification. The claimed tool is, most often, used by pet owners to remove feces in accordance with local ordinances, and for the health and safety of all. This device allows the animal owner to remove excrement without concern for their handling of said material, and in a way that contains said material throughout their disposal process. Said device is manufacturer in a way that all parts of the main tube body are molded in a one or two mold process, and inasmuch reduce the cost of the device along with an increase to customer satisfaction Their satisfaction is driven by the devices ease of storage, weight, and ability to be kept clean. This device a truly the state of the art in the removal of pet and animal waste.

The invention relates to a fecal nucleic acid preserving fluid as well as a preparation method and application thereof. The fecal nucleic acid preserving solution comprises a Tris-HCl buffer solutionwith the concentration being 0.01 to 1M, ethylenediaminetetraacetic acid (EDTA) with the concentration being 0.01 to 1M, sodium chloride with the concentration being 0.01 to 0.5 M, sodium citrate withthe concentration being 0.01 to 0.5 M and absolute ethyl alcohol with the volume concentration being 10 to 30 percent, wherein the pH value of the preservation solution is 7.0 to 10.0. The fecal nucleic acid preserving fluid provided by the invention can effectively maintain the stability of nucleic acid in feces, and is convenient for a user to sample at any time and transport at normal temperature. And downstream detection of intestinal flora is not influenced.

The invention provides a multifunctional clinical lab sample saving and cleaning combination device. The device comprises a working shell, a water storage tank, a water pump, a first conveying tube, aconnecting pipe, a first spray head, a liquid storage tank, a booster pump, a second conveying tube, a second spray head, a glass door, a movable handle, supporting columns, a storage box, supportingfeet, a PLC, a driving switch, a movable cleaning frame structure, a separable storage drawing box structure, a detachable sewage collection and treatment barrel structure, an adjustable supporting fixed frame structure, a baffle and an ultraviolet sterilizing lamp, wherein the water storage tank is welded to the upper left portion of the working shell, the water pump is installed at the lower right side of the front portion of the water storage tank through bolts, and the rear end of the water pump is connected with the water storage tank through a flange. The device has the advantages thatthrough the arrangement of the movable cleaning frame structure, when a movable column is moved from left to right, the position of a connecting frame can be adjusted accordingly, and therefore a brush cylinder clamps utensils of different sizes to perform cleaning work.

The invention discloses a cooling system of a cold plate type server and a control method. The cooling system comprises a compressor refrigeration cycle, a fluorine pump refrigeration cycle and an emergency refrigeration cycle, wherein the compressor refrigeration cycle, the fluorine pump refrigeration cycle and the emergency refrigeration cycle are communicated with one another, and one refrigeration mode in the three refrigeration cycle modes is selected and used according to the external temperature. According to the invention, the cold storage spray cooling and intermediate cooling technology is adopted, so that the heat dissipation effect of the cold plate type server is greatly improved, and the purposes of saving energy and reducing consumption are achieved; the compressor refrigeration cycle and the fluorine pump refrigeration cycle are independently used at different temperatures, so that the maximum heat dissipation purpose can be achieved with the minimum energy consumption, and the purposes of saving energy and reducing consumption are achieved; and by arranging the emergency refrigeration cycle, when the compressor breaks down, heat dissipation can be continuously conducted on the cold plate type server, so that normal operation of the server is guaranteed, and the reliability of the device is greatly improved.

A dual-disc mah-jong machine able to automatically deal the mah-jong pieces is composed of a table top with barrier edge, machine core, and base. Said machine core has mechanical drive unit, recognizing system, etc.

The invention discloses a kitchen garbage treatment device which comprises a box body, a material inlet, a helical material scraper, a mesh, a material conveying rake, an electric heating chamber, a temperature sensor, a vibration disk, a peculiar smell treatment device and an electric appliance control box, wherein the material inlet is formed in the outer side of the box body; the helical material scraper is arranged at the upper part of the tail end of the material inlet; a filtering net is arranged at the lower part of the tail end of the material inlet; the material conveying rake is arranged above the filtering net; the electric heating chamber is arranged in the box body; the temperature sensor is arranged on the inner wall of the electric heating chamber; the vibration disk is arranged at the middle position in the electric heating chamber; the peculiar smell treatment device is arranged at the upper part of the box body; the electric appliance control box is connected with the electric heating chamber, the vibration disk, a scraper and an exhaust fan respectively. Due to the mode, according to the kitchen garbage treatment device, the garbage moisture content is reduced by a temperature-changing dewatering technology, and garbage collection, transportation and storage are facilitated; the kitchen garbage treatment device has the advantages of quick treatment, high adaptability and high automation degree.

The invention discloses a folding bed frame, which comprises a unit bed frame group on the left and right side respectively, the two unit bed frame groups are pivotally connected to the connecting seat in the middle, the unit bed frame group respectively includes two upper and lower frame groups, and two cross bars of the frame group Pivoted to the connection seat, at least one support rod is pivotally connected between the upper and lower cross bars of the upper and lower frame sets. In the present invention, since the four sets of cross bars of the two-unit bed frame group are all pivotally connected to the connecting seat, and the support rod is pivotally connected between the two upper and lower cross bars, when the bed frame is folded, each cross bar of the two-unit bed frame group is connected by the middle The connecting seat of the bed is folded under the axial bed surface, the two lower frame groups are close together, and the two unit bed frame groups are folded symmetrically, that is, the folding of the entire folding bed frame is completed. By folding the bed frame in this way, the rods of the bed frame can be compactly pressed together to realize the overall folding of the bed frame, which is convenient for storage and transportation.

This invention is a new design for an animal waste collection and disposal device, as set forth in this specification. The claimed tool is, most often, used by pet owners to remove feces in accordance with local ordinances, and for the health and safety of all. This device allows the pet owner to remove excrement without having to handle the waste material, and in a way that contains the waste material throughout the disposal process. This device is manufactured in a way that all parts of the main tube body are molded in a one or two mold process, and which reduce the cost of the device and increases customer satisfaction. Customer satisfaction is driven by the device's ease of storage, weight, and ability to be kept clean. This device a truly the state of the art in the removal of pet and animal waste.

The invention relates to an engineering field, more specifically a tire packaging machine, which meets the actual needs by changing the speed of wrapping tires; through the reciprocating rotation of three functional half-wheels, the tires are laid flat and forwarded to facilitate collection Transportation, changing the position of motor one in the motor base motor base, and then changing the speed of runner two, changing the speed of the opposite wheel, and then changing the speed of lifting and falling of the long arm, and also changing the speed of runner three , changing the rotation speed of belt 2, changing the rotation speed of runner 6, and then changing the rotation speed of runner 7, thus indirectly changing the speed of wrapping tires, and then changing the packaging speed to meet actual needs; when tires and functional brackets When the contact stops, the half gear meshes with the fifth gear and the sixth gear respectively, causing the connecting column 11 to reciprocate left and right, and then drives the three functional half wheels to reciprocate left and right, and then the tire can be laid flat and forwarded for easy collection and transportation .

A hydrofoil folding vessel relates to folding vessels. The hydrofoil folding vessel solves the problem that, due to the fact of being made of light materials, existing folding vessels are thin in structure and poor in rigidity and stability under heavy load. According to the hydrofoil folding vessel, vessel body folding grooves, gunwale folding grooves, corner folding grooves and carrying folding grooves are cut out in selected positions of a rectangular flat sheet; along the folding grooves, the sheet can be conveniently folded into a trapezoid vessel body; hydrofoils are mounted on the sideboards, the nose and the stern of the vessel body; the hydrofoils are made of a plurality of rectangular sheets, which are bent into an arc shape in a simple mode or bent into a triangular shape; both edges of every hydrofoil are connected with the corresponding sideboard and a vessel bottom plate to form secondary reinforcement and protection to the vessel bottom plate and the circumference of the vessel body and accordingly to enhance the rigidity of the vessel body and further to enhance safety. The hydrofoils enlarge the contact areas between the vessel body and water, so that the stability of the vessel body can be greatly improved. The hydrofoil folding vessel is applied to flood fighting and disaster relief, water recreations and water transportation.

The invention discloses a scissors fork type automatic unfolding and folding antenna and a design and construction method thereof. The antenna comprises an unfolding and folding mechanism, a supporting truss, a vibrator assembly and a line concentration assembly. The scissors fork type automatic unfolding and folding antenna disclosed by the invention eliminates the defects that the existing vehicle-mounted and shipborne antennas are time-consuming and labor-consuming to unfold and fold and require more personnel, does not need to be manually disassembled and assembled, is rapid to unfold andfold, requires fewer operators, is small in size after being folded, and is easy to store and transport. The antenna can be applied to the field of communication antennas, and is especially applied tooccasions with high requirements for antenna occupation, weight, unfolding and folding, and technicians, such as vehicles, ships, airplanes, and the like. The design and construction method disclosedby the invention is simple in principle, feasible in technology and convenient to apply, technicians in the field can easily master and implement the method, the problem of rapid unfolding and folding of the antenna can be effectively solved, and the antenna is convenient and rapid.

The invention belongs to the field of environmental sanitation equipment manufacture, and discloses a garbage self-loading and unloading automobile to solve the technical problems that more equipment and sanitation workers are required, the labor intensity is high, the garbage standing time is long, and the possibility of secondary pollution is high due to the fact that a garbage transfer station or a garbage temporary transfer point is used for collection and transportation of garbage at present, valuable soil is required to be occupied, and a repetitive routine exists. According to the garbage self-loading and unloading automobile, the compressible and self-unloading garbage transportation automobile equipped with a liftable swinging arm telescopic crane is matched with a touch-unloading type garbage can for use, and the existing equipment for collecting, loading, unloading and transporting the garbage is replaced.

A one-meter-line chair is characterized by comprising connecting rods which are connected to a rotatable part capable of rotating relative to chair legs on the chair and extend from the rear side of a chair back, and a guardrail transversely arranged and connected with the connecting rods, wherein the rotatable part is the chair back, a chair seat or a handrail part. The guardrail and the connecting rods can rotate along with the chair; when the chair is rotated to the left side or the right side, a customer can go forward for business and the chair returns to an original state; when the customer sits on the chair for business, the guardrail positioned behind the chair back and extending to the left and right sides is capable of warning, reminding and limiting others to approach the chair and effectively keeping a one-meter-line safety distance. The one-meter-line chair has the beneficial effects that only the connecting rods and the guardrail need to be arranged on an original chair; the chair is not only the chair but also the one-meter-line chair; the connecting rods and the guardrail can be not only separated from the chair but also folded and stretched; the chair is convenient to store, transport and use, simple in structure, very low in cost and easy to popularize, and can be obtained by directly modifying the existing chair.

The invention discloses a solid waste breaking pressure machine. The solid waste breaking pressure machine comprises a machine body. A pressure applying transmission device is arranged in the machinebody. A breaking cavity and a sweeping cavity are formed in the machine body. A pressing block sliding groove which is symmetric in the front-back direction is formed in the front wall and the rear wall of the breaking cavity. A pressing block is arranged in the pressing block sliding groove in a sliding manner. Racks which are symmetric in the left-right direction are fixedly arranged at the leftend and the right end of the pressing block. A pressing plate is fixedly arranged on the lower end face of the pressing block. A pushing and sweeping device is arranged in the sweeping cavity. By means of the solid waste breaking pressure machine, the pressing block is used for extruding waste so that the waste can be broken, in addition, the pressure of the pressing plate is adjusted through a torsion spring and the lifting height of a stress plate, the pressing force of the hand on a pressing rod is saved, in addition, the broken waste is compressed, scattering of particles is prevented, and collecting and transporting are facilitated. The solid waste breaking pressure machine is small in size, suitable for home use or use of individual workshops, and operation is easy and convenient.

The invention discloses a manufacturing method of double-tank building safety net cleaning equipment. The equipment comprises a chassis, a cleaning box, a water-purifying box and a washing box and a ultrasonic generator; tension wheels are mounted on fixed beams in the chassis and the washing box; a vibrating column connected with the ultrasonic generator is mounted in the chassis; a rotating rod at the top end of the chassis is connected with the washing box through a lifting rope; the water- purifying box above the fixed beam in the washing box is connected with a washing pump at the top end; a baffle plate and an intake pipe are arranged in the washing box; and a drum is mounted on a frame near the washing box. The equipment is simple in operation, can quickly and effectively remove such objects as oil dirt, dust and paint on safety net materials with different lengths, is fast in device cleaning speed, is high in working efficiency, and is excellent in cleaning effect.

The invention relates to transportation equipment, in particular to rice hull transportation equipment for rice processing. According to the technical problem, the rice hull transportation equipment for rice processing is convenient for transportation and collection. The rice hull transportation equipment for rice processing comprises a base, a moving assembly, a collecting assembly and a pushing assembly, and the moving assembly is mounted on the base; the collecting assembly is mounted on the moving assembly; and the pushing assembly is mounted on the collecting assembly. The rice hull collecting device is provided with a discharging assembly, so that rice hulls in a collecting frame slide down through an inclined frame and an inclined plate, and the rice hulls can be collected more conveniently; a knocking assembly is arranged, and the inclined frame can be knocked through cooperation of a knocking telescopic rod and a convex block, so that the rice hulls are effectively prevented from being attached to the inclined frame and falling off, and the rice hulls are collected more cleanly; and the rice hull transportation equipment for rice processing is provided with a special-shaped hopper, so that processed rice hulls fall into the collecting frame through the special-shaped hopper, and the rice hulls can be collected and transported more conveniently.

The invention discloses a leaf vegetable harvester and belongs to the field of agriculture machinery. The harvester comprises a cutting device, a conveying device and a transmission device; the cutting device comprises a cutting knife and a first driving device used for driving the cutting knife to rotate, and the cutting knife is rotatably mounted on a rack; the conveying device comprises a pair of vertically and oppositely arranged front rollers, a horizontally arranged rear roller, a horizontally arranged second rear roller and a pair of conveyor belts, and the transmission device comprises a second driving device used for driving the first rear roller and the second rear roller to rotate. The leaf vegetable harvester is simple in structure, low in cost and convenient to operate, through the cutting device and the conveying device, harvested leaf vegetables can be collected and conveyed conveniently, and the leaf vegetable harvester completely achieves automation and saves time and labor in the harvesting process; the leaf vegetable harvester is small in size, convenient to use and easy to operate; the leaf vegetable harvester is simple in structure and low in cost, can harvest leaf vegetables of a same type and is high in applicability.

The invention relates to the technical field of an agricultural machinery, and discloses a ploughing machinery for field interplanting of an orchard in the growing period. The ploughing machinery comprises a rectangular frame and a connection rack fixed on the rectangular frame; the front side of the rectangular frame is fixedly connected with a plurality of connection blocks uniformly distributed; through slots are formed on the front sides of the plurality of connection blocks; both opposite sides of the through slots are rotationally connected with deep ploughing curved cutters by a rotation shaft; the insides of both left and right opposite ends of the rectangular frame are slantingly and fixedly connected with mounting blocks; a screening mechanism is connected between two mounting blocks in common; the inside of the rectangular frame is transversely and fixedly connected with a rectangular rod; the rod wall of the rectangular rod is connected with a ridging mechanism; and the upper end of the rectangular frame is fixedly connected with a fertilization box. According to the ploughing machinery for field interplanting of the orchard in the growing period, deep ploughing can beefficiently carried out when crops are interplanted in the orchard; moreover, after deep ploughing, soil ridges can also be raised and irrigation channels can also be formed on the ground; and the ploughing machinery can also be freely assembled to rapidly screen and harvest crops from the soil.

The invention discloses a dish cleaning device with an automatic sorting function. The dish cleaning device with the automatic sorting function comprises a sorting device, a drying device, a garbage collecting device, a belt conveyor, a sweeping device, a cleaning pool, a cleaning device and a food tool cleaning device, wherein the food tool cleaning device comprises a first conveying device, a second conveying device, a vibrating screen, a third conveying device and a cleaning box. The dish cleaning device with the automatic sorting function is compact in structure, convenient to operate and simple in maintenance, cleaned dishes can be effectively sieved, meanwhile the food residue generated in the cleaning process can be collected, and a high-pressure water pump can generate high-speed jet, so that the dishes are effectively washed, and a screw feeding device can effectively convey food residue generated by filtering of an activated carbon filter net to a garbage collection box. A filter box can be used for filtering the sewage, the recycling and reuse of the sewage can be facilitated, and an electric roller facilitates the collecting and conveying of the dishes.

The invention relates to mask preparation, in particular to a mask containing traditional Chinese medicine components and a preparation process and a preparation system thereof. Essence used by the mask contains wormwood. The process comprises the following steps of S1, placing mask paper on a positioning table and a folding and conveying table to be cut by a cutting knife I and a cutting knife II; S2, adjusting the folding and conveying table to fold the cut mask paper primarily and packaging the mask paper in a packaging bag with essence while folding the mask paper secondarily by means of athin wall box; and S3, sealing the packaging bag by using a heating part I and a heating part II. The mask can be used for diminishing inflammation, inhibiting bacteria and removing mites for skin offaces and eyelids. The mask on the eyelids is reversed upward or is torn conveniently, so that intolerant skin of the eyelids is prevented from being allergic.

The invention discloses a stage folding proscenium. The stage folding proscenium comprises a stand, wherein the stand is provided with the proscenium corresponding to a performance area on the stage,a cornice screen is provided above the proscenium on the stand, the stand is provided with a lifting mechanism for driving the cornice screen, and the lifting mechanism drives the cornice screen to expand downward in the height direction of the proscenium to cover the proscenium or to fold up in the height direction of the proscenium to escape from the space below the proscenium. The invention provides the stage folding proscenium. By setting the cornice screen, not only the shape of the cornice screen can be formed on a false proscenium, but also dynamic changes can be formed by the lifting of the cornice screen, which is suitable for performances of different stage scenes. In addition, the cornice screen expands downward to completely cover the proscenium to be also used as a closed barrier for the proscenium, and at the same time, the cornice screen is completely flattened downwards to be also convenient for transportation and storage during non-stage performances. Therefore, the fake proscenium can be flexibly adjusted to meet the use of a variety of stage scenes. .