Abstract: A fiberglass mat of a particular formulation is used to insulate exhaust system components such as mufflers, converters, and conduits.

Abstract: A versatile, low cost scaffold is constructed of commonly available materials and is adapted to be placed upon the bed of a tilt bed truck. When thereupon placed, the platform of the scaffold remains level as it is raised by tilting the bed of the truck. The scaffold comprises a lower portion which rests upon and is securely fastened to the bed of the truck. An upper portion, which includes the platform and safety rails of the scaffold is connected to the lower portion on one side by means of a hinge.

Abstract: A pole climbing apparatus for use in installation and repair of telephone lines and the like comprising an upper work platform and a lower climbing platform wherein the upper work platform includes an upper base plate for positioning substantially horizontally against a pole having a first upper pole engaging element formed on the inner portion thereof and a second upper pole engaging element coupled to the upper base plate by an upper interconnecting element comprising a pair of substantially parallel upper interconnecting members extending from the midportion of opposite sides of the upper base plate to opposite sides of the second upper pole engaging element and the lower climbing platform includes a lower base plate for positioning substantially horizontally against the pole below the upper work platform having a first lower pole engaging element formed on the inner portion of the lower base plate and a second lower pole engaging element coupled to the lower base plate by a lower interconnecting element c

Abstract: A scaffolding device comprising a pair of units each having spaced vertical suspension members, a top rail member and a bottom cross member joined together, the top rail members extending forwardly of the adjacent vertical suspension members and telescopically receiving adjustable L-shaped arms for embracing a windowsill. Bumpers extend from the vertical suspension members nearest the building wall and engage the latter for lateral stability purposes. A platform is pivotally connected to the cross member of one unit and lies across the cross member of the other unit. The units are interconnected by a collapsible gate and a chain, and the chain also connects to the platform for assisting in the raising of the platform during removal of the device from a window opening.

Abstract: A lubricating and cooling system for a spindle bearing assembly in which the spindle is rotatably mounted in bearings in a closed spindle housing comprises means for supplying lubricating oil to the bearings and cooling oil to the bearings and spindle, the lubricating admission passages and cooling oil admission passages being separate from one another and being supplied from separate lubricating oil and cooling circuits so that the lubricating and cooling are controlled individually and selectively.

Abstract: An oil change nozzle used particularly for guide rollers or the like on caterpillared vehicles. Two inflatable tubes mounted on the nozzle are inflated by the oil under pressure into a sealing contact with the inner wall of a hole in the shaft in such rollers. Old oil is pushed out by new oil with no possibility of mixing with new oil.This invention relates to an oil change nozzle or tool used for the change of lubricating oil particularly for the shafts of guide rollers on vehicles with a caterpillar such as bulldozers.A conventional manner for changing oil in such rollers was to first tilt them to drain old oil and return them back to their normal position and fill them with new oil. This required much time and labor.An object of this invention is to provide an oil change nozzle convenient to use and compact in size.

Abstract: A self-lubricating gear-type spindle coupling for use with rotating equipment such as rolling mills, where lubrication is critical. The self-lubricating coupling includes reservoirs connected by first valve means to plenums formed by the retraction of the spring guides in the guide channels when the roll shaft is engaged at roll insertion. A partial vacuum is created in the plenums causing the first valve means to open and the plenums to fill with lubricant from a lubricant reservoir contained in the spindle shaft. When the roll shaft is removed and the compressive force is released from the spring assemblies, the guides move forward in the channels opening second valves which permit the lubricant to pass through the spring housings and onto the sleeves and hubs of the coupling to lubricate the gear teeth.

Abstract: An elongate checkout counter having a flat counter top, front and rear sides, a left or upstream end and a right or downstream end is provided that is particularly adapted for use in combination with a counter related UPI System scanner, a cash register and a produce scale. The left or upstream end is disposed to facilitate positioning a shopping cart in convenient left-hand reach of a checker stationed at the front side of the counter. A flat scanner panel is positioned in the top adajcent the upstream end, in convenient left-hand reach of the checker. A cash register with a forwardly disposed manually operable keyboard is positioned on the counter top adjacent said upstream end and rear side rearward of the scanner panel. A produce scale with a tray is positioned on the counter top downstream of the cash register and the scanner panel to project forwardly beyond the forward limits of the cash register and an elongate conveyor in the counter top with an upstream end between the tray and said front side.

Abstract: A brake mechanism is mounted on a vehicle and includes a housing having a slot for receiving a rotatable disc to be braked. The upper portion of the housing includes a chamber for receiving pressurized fluid from a source. A spring actuated piston is slidably and sealingly disposed within the chamber. A removable spring assembly is positioned forwardly of the actuating piston and exerts a preselected spring force thereon. When the fluid pressure acting against the piston is less than the spring force applied to the piston, the piston moves axially in the chamber and a rod portion thereof contacts a lever that is pivotally mounted to the housing. The lever pivots on the housing to axially displace a brake applicator piston that is movably positioned in the housing adjacent to the rotatable disc. A plurality of braking pads are secured to the end portion of the applicator piston and additional braking pads are secured to the brake housing opposite the disc.

Abstract: A one-nut slack adjuster with a nut axially disposed having clutch surfaces and on non-self-locking engagement on a spindle coaxially positioned within a tube moving axially to apply brakes has a spring biased thrust bearing held forwardly on the nut in the brake application direction disposed to engage a fixed position control member and when the nut is moved axially forwardly a predetermined desired slack distance thereby to bias the nut backwardly. A second trust bearing on this nut is placed forward of the control member to engage it at a distance from rest less than the clutch separation distance.In a double acting embodiment a further trust bearing spring biased between the nut and tube in a position forward of the control member holds the nut in a forward direction in clutch engagement.A further feature is a barrel spring arrangement foreshortening the assembly by a sleeve converting two coaxially disposed spring sections in series.

Abstract: A vibration damper for a torque converter lock-up clutch wherein a wide angle of relative movement between the input and output members of the clutch is provided. The damper has radially spaced, staged resilient members disposed in parallel torque transmitting relation between stages in a manner to permit the primary stage only to transmit torque during a predetermined amount of relative angular movement and permit the secondary stage to pick up torque transmission for further predetermined relative angular movements.

Abstract: Hydraulic controls in a transmission for engaging a clutch for the F-R, or forward or reverse, direction before a clutch for first, second, or third speed. Flow of hydraulic fluid to each direction clutch and to each speed clutch is by way of a reducing valve which modulates fluid pressure in controlled way by throttling the flow. After the power unit for the clutch for the F-R clutches and the power unit for the clutch for first, second or third speed are filled with fluid by the reducing valve, pressure in the power units is then slowly raised by the valve linearly toward its maximum; for this purpose the hydraulic controls are supplied by a single source of hydraulic fluid and operate therefrom to provide a pair of modulated pressure outputs which are maintained with varying differences throughout their range of operation, and which operate the selected one of the F-R clutches and the selected one of the first second or third clutches.

Abstract: A drive arrangement for a mechanically driven press with the press including at least one drive shaft mounted in a press frame and at least one eccentric or crank arranged on the drive shaft with a clutch being operatively connected to the drive shaft for permitting a press stroke operation upon engagement of the clutch. At least two hydraulic brakes are provided for braking the press between press strokes and a two system hydraulic circuit is provided for controlling the operation of the clutch and the at least two brakes.

Abstract: A power transmission of the type having an interleaved, multiple friction plate clutch in which helical cam elements are used to provide clutch plate clamp up force and transmit driving torque between the parts. In one form of such a transmission where the input and output members are arranged in coaxial alignment, special axial thrust absorbing means are used for absorbing the axial thrust developed in one clutch assembly.

Abstract: The synchronizer for selectively coupling a pair of gears which are journalled on a shaft includes a coupling sleeve slidably splined on the shaft for selective engagement with the gears. A pair of synchronizer rings are provided for frictional engagement with the gears. The synchronizer rings which are formed from sheet steel stampings are provided with three axially directed combination guide pins and blocker pins which extend into three respective recesses in the guide sleeve. In one embodiment the rings are biased toward each other with the extensions on one ring overlapping the extensions on the other ring and in a second embodiment the extensions on each ring extend into opposite ends of a common member slidably mounted in the recesses in the coupling sleeve.

Abstract: A conveyor with laterally deflectable article transporting pallets is disclosed in which the pallets are mounted on a carriage-like structure having wheels which run in and are guided by heavy duty channels.

Abstract: A material handling apparatus for transporting parts having a bowl provided with an upright curved wall surrounding a rotatable floor. The curved wall is formed with a track that supports an endless belt capable of bending in an edgewise direction for movement along a helical path from an entrance point located at the level of the floor to an exit point located above the entrance point. As the belt moves along the track, it gradually inclines towards the center of the bowl with a portion of the belt being sufficiently inclined to cause parts to move into engagement with a rail located at the inboard edge of the track and formed so that parts not properly oriented will drop by gravity to the rotating floor.

Abstract: An automatically controlled bunker system includes a plurality of sensor means for sensing various operational conditions within the bunker system and for deriving signals indicative of the sensed operational conditions. The derived signals are fed to control means which control operation of the bunker system in accordance with the sensed operational conditions.

Abstract: The present disclosure is directed to a non-pivotal modular conveyor belt and modular links therefor wherein a belt is made up of modules interfitted and joined by a non-pivotal connection passing laterally through adjacent interfit modules at their ends and wherein the module has a flexible member joining a pair of link ends. When assembled with the non-pivotal connection through the interlocked link ends with the adjacent flexible members in abutting relationship the point of abutment of the flexible members may be fused so that there is no open joint into which foreign matter may enter requiring cleaning.

Abstract: A one-piece paperboard blank for erecting into a carton for holding and displaying a stacked array of generally flat rectangular boxes includes generally right triangular-shaped sides, a back, a base, and a partially open top portion into which the rectangular boxes are received. The carton includes an inclined support panel disposed wholly within the carton and extending from the top of the back panel to a point intermediate the bottom panel. Cushion flaps are provided inside of the carton contiguous with the opposite sides thereof, whereby the stack of rectangular boxes are disposed at an inclined angle within the carton, and are resiliently gripped by the opposed cushion flaps. The forwardmost portion of the top of the carton is closed by a panel containing indicia.

Abstract: Pharmaceutical capsules with telescopically engaged body and cap portions, also known as hard shell capsules, having enteric properties. The capsule body and cap portions are formed by dip-molding using a homogeneous film-forming mixture comprising (1) hydroxypropyl methylcellulose and an ammonium salt of cellulose acetate phthalate polymer, or (2) gelatin and an ammonium salt of a copolymer of methacrylic acid and methacrylic acid alkyl ester; optionally with the inclusion of plasticizer and/or coloring agent. The capsules are soluble in or disintegrated by the alkaline intestinal secretions but are substantially insoluble or resistant to solution in the acid secretions of the stomach.

Abstract: A rupturable package containing ingredients for the preparation of or addition to, a drink or food. The package has two flat sheet-like walls directly interconnected by binding zones and define between them a plurality of compartments separated by such binding zones. At least some of the compartments contain different ingredients, and one of them is of elongated shape for receiving tableware, such as a stirrer, therein, and has one longitudinal edge adjoining co-extensive edges of at least two other compartments.

Abstract: A storage tray assembly comprising at least two separate trays of rectangular form together with at least two pairs of sidewall members which are of similar form and of L-shaped configuration, said sidewall members being arranged so that their lower portions can engage the upper part of one tray and their upper portions can engage the lower part of another tray so as to connect said trays together in a vertically spaced relationship, each tray having in its upper surface slot means which extend along each of two opposite lateral sides of the tray and at least partially along one of the other sides so as to be adapted to receive the lower portions of two of said L-shaped sidewall members, and having in its lower surface further slot means which extend along each of said two opposite lateral sides and at least partially along each of the other two sides so as to be adapted to receive the upper portions of two further L-shaped sidewall members so that a tray can be disposed relative to the pair of sidewall membe

Abstract: A dispenser carton having a slidable closure formed by an extension panel hingedly connected to a side wall of the carton. This side wall is of a two-ply construction wherein the slidable closure panel is connected to the outermost ply. The innermost ply also has an extension panel which seats on an opposite extension panel of an opposite side wall to form a base support for the slidable panel. A top closure wall flap connected to the front and rear walls of the carton, respectively, is folded over the side extrusion panels and secured together to close the carton. The innermost extension panel of the two-ply side wall includes an opening therethrough, which is placed in registration with openings formed in the top closure wall flaps when the slidable closure panel is moved laterally with respect to the top wall flaps and innermost extension panel, enabling the contents of the carton to be dispensed therethrough.

Abstract: A machine for filling capsules with chemicals and for capping such capsules is very complicated and should be very efficient. In order to reduce the burden on such a machine and to simplify its structure, this invention provides a separate device positioned ahead of such a machine for selecting and removing from the capsules being supplied to such a machine such unsatisfactory capsules as capsules deformed into an oval form and the like. In addition, this device prevents the occurance of conditions causing the machine to be stopped because of the accumulation of capsules in the passages therethrough and thereby allows the machine to run smoothly and effectively.

Abstract: A substrate grader accepts or rejects a substrate depending upon the degree of warp and then sorts the accepted substrates according to a dimension thereof. The grader comprises a first plate which is U-shaped and inclined at an acute angle with respect to the horizontal, the two arms of the first plate extending above the base thereof. A first elongated member (or lower guide) that is attached to the front of the base has a straight side which is adjacent to and spaced a short distance away from the opening in the first plate. A second elongated member, that is attached to the back of the free ends of the arms, supports a second plate (or upper guide) thereon which extends between the arms, which has a top surface in a plane containing the top surfaces of the arms and base, and which has a stepped edge in the opening.

Abstract: A device for mounting on a generally horizontal support surface, suitable for use in a retail outlet for holding packaged goods on display such as bagged food items, for example potato chips. The device has first and second angle members, each having an opening through a first leg, at least one of the openings being an elongated slot. The first angle member also has an opening, which may be an elongated slot, through its second leg. The two angle members are fastened together by a bolt passing through the openings in the first legs of the two angle members. A second bolt attaches an upright support strip to the angle member whose second leg has an opening. The support strip has an attachment opening, permitting its attachment to the mounting device, and at any of several heights when there is a plurality of such openings. The support strip has a support opening, and preferably a plurality of such openings.

Abstract: A device for controlling the flow distribution through a regeneration vessel of a mixture of a carbonaceous adsorbent material and an inert material in an adsorbent material regeneration process in which a lower, conical section is supported by a hopper portion of the vessel, and an upper, conical section extends within the vessel. A plurality of angularly spaced flow passages extend longitudinally through the device, from the upper surface of the upper section to an interior chamber of the device disposed within the hopper, which is in fluid communication with the discharge of the vessel. The longitudinal axis of each passage is inclined at an angle of between 55.degree.-90.degree. relative to a base plane of the device, with 70.degree. being a preferred value.

Abstract: A material handling device is disclosed for use in a material holding, or storage, receptacle. The device includes a vertically positioned discharge duct having spaced apertures therein with the bottom of the duct connected to a discharge access passage whereby granular, free flowing material, such as grain, within the receptacle, is withdrawn through the apertures and discharge duct in a manner such that the withdrawn material is from the top of the stored mass. The apertures are either staggered or opposed with respect to one another along the discharge duct. Material loading is through the top of the receptacle with the loading duct, or channel, being formed in a manner so as to prevent damage by impact to the material being introduced.

Abstract: The present invention is concerned with a novel furnace top charging apparatus, especially of the bell-less type, having a rotating distribution chute, wherein there is provided a portal truck serving as a stand on a floor under chuting bunkers, which normally supports collecting chutes, and moves them when requested. The collecting chutes have a mouth for mounting a vertical chute at an upper portion between pivots of two swingable sealing valves. These members enable efficient preservation, checking inspection or repair of the collecting chutes, the vertical chute and the rotating chute.

Abstract: A vehicle wheelchair lift for loading and unloading an occupant confined to a wheelchair. The lift having a wheelchair platform which is folded vertically inside the vehicle and adjacent a vehicle door. When the lift is in use, the vehicle door is opened and the platform is lowered to a horizontal position outside the door opening. The wheelchair occupant is then wheeled onto the lift by a wheelchair attendant and the platform is lowered to the ground surface.

Abstract: A stacking and interleafing device for rolls of pressure sensitive adhesive tape has an inclined table adapted to hold a row of the rolls carried in a spaced relationship on a mandrel. The table supports a plurality of upright, parallel plates that separate the adjacent rolls. The plates maintain the rolls in a spaced apart relationship as the mandrel is drawn clear of the rolls and as they advance down the incline. An escapement mechanism mounted over the table successively transfers one row of stripped rolls from a storage portion of the table to a feeder portion of the table subtended by a movable drop-off mechanism. Translation of the drop-off mechanism gravity feeds the rolls, one at a time, and without contact between the rolls, to a conveyor system. A reciprocating shuttle plate receives the rolls from the conveyor system and successively carries each roll to a mandrel mounted on a rotatable stack forming arm. As the shuttle returns to receive another roll, the preceding roll drops onto the mandrel.

Abstract: The present invention relates to a new and improved unloading apparatus for dry particulate matter in containers wherein the containers are positioned in an enclosed drum and rotated. Thereafter, a releasable spout mounted with the drum enables the dry particulate matter to be dumped or released from the drum without danger to workmen or dangerous spreading of the dust from the dry matter.

Abstract: An improvement is provided in packages in which a thermoplastic bottle has a separate support base integrally and securely attached thereto for supporting the bottle in an upright position. The bottle includes a convex bottom portion incapable of supporting the bottle in a stable upright position and a peripheral sidewall above the bottom portion. The support base includes a lower package support surface and a generally tubular sidewall extending upwardly from the support surface to telescopically enclose a portion of the bottle peripheral sidewall. The specifically disclosed improvement essentially resides in providing a pre-decorated tubular label of either a closed cellular thermoplastic or a clear thermoplastic film in heat shrunk snug substantially contaminant precluding, peripheral engagement with externally exposed surfaces of the bottle peripheral sidewall and the tubular sidewall of the base and covering the juncture of the base and the bottle.

Abstract: A vacuum bottle construction is disclosed in which the vacuum filler is formed from a pair of concentric thin wall metal cylinders. The cylinders are formed of a thin metallic material, such as mild steel, which is unable to withstand the pressure differential of atmospheric pressure on one side and a vacuum on the other side. To prevent collapse of the filler a rigid jacket is provided over the outer wall in intimate contact therewith to prevent collapse.

Abstract: A child-resistant, safety closure for a container having a dispensing end including a threaded neck portion onto which the closure is adapted to be threadably assembled. The closure is of the type having an annular sidewall section having a flexible distal end portion provided with at least one interlocking member adapted to interlockingly engage at least one complementary interlocking member on the dispensing end of the container in such manner that interlocking engagement is achieved when the closure is in a fully closed position on the container neck portion. Removal of the closure requires manual compression of the sidewall at locations straddling the interlocking members coupled with concurrent retrogressive turning movement of the closure. An additive safety feature embodies providing a secondary interlocking engagement when the closure is partially removed.

Abstract: In home canning equipment in which a two-piece closure is threaded onto a jar mouth to provide a sealed container, the band and lid of the closure are provided with respective sets of indicia which, when brought into a preselected pattern of registry by helical rotation of the band relative to the lid, uniformly provides such sealed containers with a degree of sealing gasket compression that is closer to ideal.

Abstract: There is provided a joint between a pressure vessel lid and a pressure vessel. The vessel is intended for very high pressures and of the type comprising a thinwalled container which is supported by an external rigid support structure, such that the container provides the vessel tightness and the structure provides the vessel strength. The lid is clamped onto a container rim by means of screws via blocks. An annular shoulder is fixed to the support structure above the container rim. There is an axial play between the blocks and the shoulder. This play is adapted to be eliminated for a relatively low container pressurization at which the yield limit of the container material is reached. The screws merely have to provide the clamping force required to ensure the vessel tightness until the blocks abut the shoulder, whereafter a further container pressurization provides the necessary lid clamping force.

Abstract: Two generally flat, spaced U-shaped portions of the lug generally parallel to a first reference plane and each having a bight portion connecting a pair of straight parallel spaced leg portions are joined at the free end portions of their leg portions by two generally flat, spaced straight lug portions parallel to each other and to a second reference plane perpendicular to the first. The lug is formed of a continuously wound resin-impregnated strand of glass filaments. Several such lifting lugs are secured to a tank by resin-impregnated glass filaments wound therearound.

Abstract: In a vertical cylindrical liquid storage tank having a circular floating roof, an improved sealing means including an elastomeric composite strip impermeable to vapor connected at its inner edge by an essentially vapor tight joint to the roof edge and extending as an annulus outwardly to the tank inner side wall, the elastomeric composite strip comprising a plurality of flexible resilient elongated stiffeners laterally positioned and embedded in elastomeric material, and the elongated stiffeners extending from the strip edge joined to the roof and terminating short of the strip edge at the tank wall.An elastomeric composite strip, impermeable to petroleum vapor, having a plurality of flexible resilient elongated stiffeners laterally positioned and embedded in elastomeric material, with the elongated stiffeners extending from one strip edge and terminating about at the other strip edge.

Abstract: A lid for a beverage container comprising a first portion having an opening therethrough and a second portion integrally connected to the first portion and capable of being folded underneath the first portion to be normally biased to a sealing engagement with the aperture when the lid is fastened onto the rim of the container. When the user depresses the second portion, liquid is allowed to pass from the container.

Abstract: A dispensing package for individual sheets pre-moistened with a volatile component. The package comprises a container impervious to the volatile component with a stack of the pre-moistened sheets therein in discrete, interleaved condition. One surface of the package has a restrictive dispensing orifice so sized as to just permit the passage therethrough of two of the pre-moistened sheets in tightly gathered form so that, as each sheet is pulled through the orifice, it will pull a sufficient amount of the next sheet of the stack through the orifice to be conveniently grasped by the consumer when desired and to serve as a plug for the orifice until it is extracted therefrom by the consumer. During the packaging process a sufficient portion of the topmost sheet of the stack is caused to extend beyond the opening to enable the consumer to grasp the topmost sheet and extract it without having to open the package container and pre-start the topmost sheet through the dispensing orifice.

Abstract: Discharge of a high-pressure gas-occluding liquid from a pressureproof container holding therein said liquid in a compressed state is effected by a method which comprises connecting said pressureproof container through the medium of a valve to a pressureproof receptacle, allowing the liquid to transfer into said pressureproof receptacle, diminishing the pressure within said pressureproof receptacle for thereby separating the occluded high-pressure gas from the liquid and subsequently releasing the liquid alone from the receptacle.

Abstract: A helical coil winding inserted in a flexible bag, such as a plastic bag, and connected to or associated with the dispensing spout or neck opening thereof. The helical coil will extend into the bag and will provide a form, about which the flexible wall of the bag will collapse and form, to provide a dispensing tube or passageway leading to the bag spout, as the contents of the bag are removed as a result of a pumping action, suction action or other condition resulting in differential pressure causing collapse of the bag.

Abstract: A tilt can or container for pouring flammable liquids having means for simultaneously venting the can when opening the pouring spout.

Abstract: A dispensing pump of the type having opposing pump housing members and a trigger for actuating a variable volume pump chamber, the trigger being mounted on one of the members for pivotal movement as a trigger trunnion bears against bracket seats on the one housing member. The pair of leg members on the other housing member bear against the trunnion for maintaining it seated against the brackets so as to facilitate pivotal movement of the trigger.

Abstract: A pump actuating system is associated with a container having a pump for dispensing the container contents. The system includes a housing mounted on the neck of the container and at the same time the housing serves to couple the pump with the outlet end of the container. The pump is of the reciprocal type having a reciprocating plunger which also serves to direct the container contents away from the pump. A conduit couples with the pump outlet and serves to direct the pumped container contents either coaxially with or transversely of the axis of the neck of the container in accordance with the selected dispensing pattern. An actuator is mounted by the housing and is coupled with the conduit for facilitating the actuation of the pump between a first pump position at which the container contents are drawn into the pump chamber and a second position at which the contents are expelled therefrom. The actuator is integrally molded so as to include a trigger, toggle and guides.

Abstract: A capillary tube applicator for dispensing anaerobic and cyanoacrylate adhesives is penetratingly inserted and retained in place by an interference fit within a cap attached internal to the neck of a container for the adhesive.

Abstract: A dispenser carton capable of being formed from a single-piece paperboard blank is disclosed. The blank is suitable for erection into a rigid, rectangular container having a measuring chamber therein which is provided with a "locked-in", slide-valve discharge opening at the dispensing end of the chamber which is reclosable.

Abstract: A fuel supplying apparatus comprises a conduit pipe adapted to conduct a liquid fuel from a storage tank to a high place above a fuel supplying service area, a fuel supplying hose connected at one end thereof to the conduit pipe at its end at the high position and provided at the other free end thereof with a fuel supplying nozzle, the free end of the hose being suspended from the high place, an arm mechanism having one arm end pivoted at the high place and another arm end adapted to move in a straight line, the total length of the arm mechanism being substantially constant irrespective of the displacement position thereof, and a guide mechanism for guiding the other arm end of the arm mechanism in a substantially horizontal movement, that is, in a movement substantially parallel to the service area. One part of the hose is disposed substantially along the arm mechanism at the high place. The other part of the hose is suspended from the other arm end of the arm mechanism.