|Publication number||US3562808 A|
|Publication date||Feb 9, 1971|
|Filing date||Oct 8, 1968|
|Priority date||Oct 8, 1968|
|Publication number||US 3562808 A, US 3562808A, US-A-3562808, US3562808 A, US3562808A|
|Inventors||Whitley William J Jr|
|Original Assignee||Julien P Benjamin Equipment Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (9), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
9, 1971 w. J. WHITLEY, JR
PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed 001;. a, v 1968 5 Sheets-Sheet-l WILLIAM J. WH/TLEY, JR.
ATTORNEY Peg-9,1971 w. J. WHITLEY, JR 3,562,808
' PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed Oct. 1968 5 Sheets-Sheet :5
5 FIG. 4
w/u. [AM J. WI-l/TLEY, an.
ATTORNEY INVENTOR 1971; w. J. WHITLEY, JR 3,562,803
PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS Filed Oct. 8, 1968 5 Sheets-Sheet 4 WILLIAM J. WH/TLEY, JR.
Nigel/mi ATTORNEY INVENTOR United States Patent Ollice 3,562,808 Patented Feb. 9, 1971 3,562,808 PUMP AND WHEELED DISPENSER FOR VISCOUS FLUIDS William J. Whitley, Jr.', Sanford, Fla, assignor to Julian P. Benjamin Equipment Company, Jacksonville, Fla., a corporation of Florida Filed Oct. 8, 1968, Ser. No. 765,775 Int. Cl. A01c /00 U.S. Cl. 222-177 3 Claims ABSTRACT OF THE DISCLOSURE An apparatus for roof construction and repair work comprises a manually propelled wheeled vehicle that includes a container for viscous adhesive material and a submerged squeegee type pump which has a flexible vane type rotor that is driven by the wheels in an arrangement which permits the Wheels to be individually adjusted to adapt to the spacing between grooves in roof decking materials. The pump has a plurality of discharge ports and a conduit system which includes flexible lengths that receive the adhesive from ports is provided in the apparatus. The discharge ends of the conduits are held by holders which are transversely adjustable on a support bracket which in turn is also transversely adjustable to the line of travel for the vehicle. Featured in the pump structure is a movable control component that includes a valve member and a vane depressing element which is arranged to permit relief of the pressure at the discharge side of the pump when the valve is moved to the closed position.
The invention relates to a rotary flexible vane type pump and to an apparatus for use in roof deck construction and repair work for dispensing fluid adhesive materials on the roof deck.
In the construction and repair of roofs for industrial and commercial buildings, it is common to use corrugated sections in forming the roof deck. These sections form the principal supports for the rest of the roofing materials which are laid down on top of the deck. 'It is the usual practice to apply an adhesive material along the lands of the corrugated sections to provide a bond along the lands between the deck and the overlying roofing material. The overlying material in many instances may be sheet-type insulation material that spans the distance between the spaced lands and thus overlies the grooves therebetween so that random application of the adhesive is wasteful of adhesive. Consequently any practical dispenser should be adapted to dispense the material in accord with a pattern that can be adjusted as need arises.
Those skilled in the art will appreciate the fact that roof decks of many commercial buildings cover several acres of ground and consequently there is a need for using wheeled dispensers which can carry sizable quantities of fluid adhesive material and can adequately dispense the material in the area of the roof deck to which adherence is desired. One of the problems that has confronted manufacturers of roofing apparatus is the fact that between manufacturers the specifications for the spacing between the lands and valleys or grooves of the roof deck sections varies so that equipment which is suitable for use on a deck made up of one type of corrugated deck section is inadequate for use on a deck made up from deck sections manufactured by a different manufacturer.
In addition to the problems that arise from a lack of standard industrial specifications for the roof deck sections, there is also the problem of dispensing adhesive materials which although fluid nevertheless in many cases are so highly viscous as to, for practical purposes, preclude the possibility of using gravity flow as a means for dispensing the fluids from the container onto a roof deck in a uniform pattern. Attempts have been made to use positive displacement pumps for dispensing the highly viscous fluids from the adhesive containers and to drive the pumps by a drive connection with the wheels of the dispenser, but such attempts have been generally unsuccessful. In some instances the apparatus has failed to uniformly dispense the adhesive material and in other instances the drive connections with the wheels are such as to limit the use of the device to the roof structure of but one manufacturer. In yet other instances, the structures utilized are so complicated as to preclude the possibility of their being economically manufactured and in most cases it is almost impossible to effectively clean the equipment without the disassembly of many parts.
One object of the invention is to provide a pump of the flexible vane type which has general utility but which is especially useful for pumping highly viscous fluid materials in an environment where the occasion arises for the need to close off the discharge of the fluid by a suitable valve and yet permit continued rotation of the rotor.
One particular object of the invention is to provide a pump of the flexible vane type which may be used for dispensing viscous materials from wheeled vehicles and nevertheless be drivingly connected to the wheels of the vehicle.
Yet another object of the invention is to provide an adhesive dispenser for use in roof repair and construction work and which can be readily adapted for use in dispensing adhesive material onto corrugated roof deckings that vary from one job site to the next.
Yet another object of the invention is to provide improvements in a wheeled dispenser of the kind contemplated herein and which permit a pump rotor to be drivingly connected to the ground contact wheels and also permit the wheels to be adjusted in their spacing when the need arises to adapt the device for use with diiferently dimensioned corrugated decking.
Yet another object of the invention is to provide an apparatus for dispensing fluid adhesive materials onto corrugated roof decking and which requires a minimum amount of adjustment during use of the apparatus in order to dispense the material in the desired areas of the roof deck.
One aspect of the invention is directed to a flexible vane type pump which is equipped with a vane depressing element that can be moved to a nondepressing position with respect to the vanes so as to relieve any back pressure which would otherwise occur when the outlet of the pump is closed to the passage of the fluid therethrough.
.Yet another aspect of the invention is directed to a pump of the flexible vane type and wherein a valve member is provided for opening and closing the outlet of the pump, and a vane depressing element is connected in movement with the valve member and moved to a nondepressing position with respect to the vanes as the valve member is moved to closed position.
Yet another aspect of the invention is directed to a dispenser for fluid type adhesive materials that may be used in roof construction and repair work and wherein the drive wheels are drivingly connected to the rotor of the pump through separate axles which are axially movable with respect to the rotor so as to facilitate adjustment of the location of the wheel relative to the rotor and without disconnecting the drive connection between the axle and the rotor.
Yet another aspect of the invention is directed to providing a dispenser for adhesive materials which may be used in roofing repair and construction work and wherein the fluid discharge from the dispenser is dispensed on the roof deck through a plurality of conduits, there being provided a plurality of holders for the respective discharge ends of the conduits and which are adjustably mounted on a bracket so that the spacing between the holders, and thus the discharge ends of the conduits, can be varied on the bracket and also a bracket which itself is mounted in a manner such as to permit adjustment of the bracket transversely to the direction of travel of the vehicle.
The novel features which are believed to be characteristic of this invention are set forth with particularity in the appended claims. The invention, itself, however, both as to its organization and method of operation, together with further objects and advantages thereof, may best be understood by reference to the following description taken in connection with the accompanying drawings, in which:
FIG. 1 is a perspective view of a manually propelled push type vehicle for dispensing highly viscous adhesive material in the construction and repair of roofs for industrial and commercial types of buildings;
FIG. 2 is a perspective view of a fragment of the vehicle shown in FIG. 1 with certain parts being broken away to expose the detail of other parts and with certain parts in different positions;
FIG. 3 is a left side elevational view of the vehicle shown in FIG. 1 with certain parts broken away and others removed;
FIG. 4 is an elevational view taken generally transversely of the line of travel of the vehicle and along the lines 4-4 of FIG. 3, and with certain parts being removed and others broken away;
FIG. 5 is a sectional plan view which is generally taken along the lines 55 of FIG. 4 with certain parts being broken away and others removed;
FIG. 6 is an enlarged elevational section view of a fragment of the vehicle shown in FIG. 1 and is taken generally along the lines 6-6 of FIG. 4;
FIG. 7 is a view similar to that shown in FIG. 6 but with certain components in a different position;
FIG. 8 is an enlarged perspective view of one element of a holder for certain conduits seen in FIG. 1; and
FIG. 9 is an enlarged perspective view of certain elements shown in FIG. 2.
Reference is now made to the drawings and wherein a manually propellable vehicle for use in dispensing viscous fluid adhesive materials in the construction and repair of roofs for industrial and commercial buildings is designated at 10. The wheeled dispenser or vehicle 10 includes an open container 11 which is supported on a wheel assembly 13 that is seen in ground contact with a section 12 of a roof deck in FIGS. 1 and 3. The vehicle is adapted to be pushed by a worker during use-and in this respect it has a handle 14 which is offset from the rear wall 15 of the container and rigidly connected to the container by a pair of inclined structural members 16 that are spaced apart and welded to the opposite side walls 17 and 18 of container 11, as generally shown in the drawings. The handle 14 is provided with bent ends that serve as hand grips, as seen in FIG. 1, and generally extends transversely to the normal line 19 of travel when the dispenser is in use.
The top end of the container is reinforced by angles 20 which are welded to the container walls and which surround the opening 21 into the container well 22. These angles 20 provide a seat for the container cover plate 23. Cover 23 is hinged for pivotal movement between open and closed positions by a pair of hinges 24 that are located at the front side of the container. As seen in FIG. 3, the lower section of the front wall 25 of the container is generally inclined downwardly toward the rear of the vehicle. The bottom wall of the container is formed by a rectangular plate 26 which, of .course, joins with the 0p posite side walls 17 and 18 and with the front and rear walls 25 and 15 to form a fluid type arrangement at the bottom 27 of the well 22. Here at the bottom of the container, a pair of forwardly projecting structural side 4 members 28 are welded to wall 26. These members 28 are interconnected at the front of the vehicle by a transverse member 29. Member 29 serves as a ground contacting shoe for supporting the container against pivotal movement about the axis of the wheel assembly when the vehicle is not in use.
The container 11 has a rotary pump 30 of the squeegee type and which is supported at the bottom 27 of well 22 on the bottom Wall 26. Pump 30 includes a casing 31 which comprises an elongated member 32 which may be an extruded aluminum section, as in the illustrated embodiment, and which is arranged transversely to the general line of travel 19 at the bottom of the Well. In addition to member 32 the casing includes a pair of end members 33 that are welded upright at the opposite ends 34 of the extruded member 32. Member 32 has an arcuate section 35 which provides an arcuate surface 36 that is wiped by the flexible vanes of the pump rotor as will be subsequently seen. This surface 36 in part defines the rotor chamber 37 in the pump casing 31. To the rear of the arcuate section 35 in the arrangement illustrated in the embodiment, member 32 has an upwardly opening longitudinally extending groove or slot 38 which provides a chamber 39 in the casing for the valve member to be subsequently described. This chamber is defined by spaced sections 40 and 41 of member 32 and the fluid outlet 42 of the pump is formed in the rear wall section 40 by providing a plurality of spaced discharge ports 43 in the illustrated embodiment. These ports 43 communicate with the valve chamber 39 at the interior 44 of the casing 31, and each port has an aligned opening 45 in the front wall section 41 so that via the valve chamber 39 each port communicates with the rotor chamber 37. The pump casing 31 rests on the bottom wall 26, as seen in FIGS. 6 and 7, and the rear wall 15 of the container 11 has a plurality of spaced openings 46. These openings 46 are aligned at the exterior of easing section 40 with the respective ports 43, and each port 43 is internally threaded to receive an exterionly threaded nipple 47 which projects through the rear wall opening associated with the port. Here the pump casing is secured against movement in the well location of the chamber by means of nuts 48 which are threaded on the nipples 47 at the exterior of the container as seen in the accompanying drawings.
The pump rotor 49 is, of course, housed in the rotor chamber 37 and the arrangemnt is such that the rotor axis 58' is fixed with respect to the pump casing by the wheel axle arrangement in the wheel assembly. The rotor is drivingly connected to the wheel assembly 13 and one feature of the invention resides in a drive arrangement that enables the ground contact wheels 50 to be laterally adjusted with respect to the opposite sides 51 of the container without disrupting the drive connection. To facilitate such adjustment, the rotor includes an elongated open-ended hollow cylindrical core member 52 and which is provided with a key 53 that extends between the opposite ends 54 of the member 52 in the hollow 55. Each wheel 50 is associated with a separate axle 56 and is fixed to the axle at its outer end 57 so that the axle is drivingly connected to the wheel and rotated about its longitudinal axis 58 when the dispenser is in use. Each axle as seen in FIG. 4 is journaled in an adjacent bearing 59 that is bolted to the adjacent side wall by bolts 60 which engage a seal 61 retaining metal strap 62 at the interior side of the side wall. Appropriate holes are provided in the end wall members of the casing and also in the adjacent side walls and straps to accommodate the locations of the axles. Each axle also has a longitudinally extending keyway 63 which accommodates the key 53 of core member 52. The inner end of the axle 56 is received in the hollow 55 of the core member in the wheel assembly 13, and of course, is drivingly connected to the rotor and axially slidable with respect to the rotor by virtue of the key type drive connection. The inner race 65 of each bearing 59 is equipped with a set screw 66 that engages and thus secures the axle against longitudinal movement with respect to the rotor, and the set screw of each bearing may, of course be manipulated to disengage and release the axle and thus enable the wheel location to be laterally adjusted with respect to the adjacent side of the container. The location of each wheel can be adjusted independently of the other wheel in the assembly as is indicated by the broken line position 67 for the left wheel shown in FIG. 1. In the preferred embodiment illustrated, both wheels are keyed to the rotor to avoid a drag on just one wheel. If desired, however, appropriate modifications can be made to key only one axle to the rotor and in which case the other axle would be freely rotatable in the hollow of the core.
In addition to the core member 52, the rotor has a plurality of radially projecting flexible vanes that are made from suitable resilient material such as rubber so as to enable accomplishment of the wiping actions that are characteristic of rotary flexible vane type pumps. The vanes 68 are circumferentially spaced apart at the perimeter 69 of the rotor and are arranged to wipe the arcuate surface 36 of the casing when the rotor is being driven in the direction indicated by arrow 70. Surface 36 defines the fluid delivery side 71 of the rotor chamber and as the rotor rotates, the fluid admitted to the open casing is trapped in the spaces 72 between the vanes 68 as the vanes encounter and thereafter wipe the surface 36 and advance the fluid along the fluid delivery side 71 of the chamber toward the outlet. As is well known to those familiar with flexible vane type pumps, the pumping action is secured by depressing the vanes at the discharge side 73 of the rotor chamber by providing a suitable surface which is contacted by the vanes and causes the vanes, as they rotate, to be deflected into the intervening spaces 72. This expresses the fluid in the intervening spaces and creates a pressure head at the discharge side of the rotor chamber.
One feature of the invention resides in providing a means for regulating the discharge or passage of fluid through the outlet of the pump and for simultaneously relieving the pressure at the discharge side of the chamber when the outlet is closed by actuation of the valve so that pressure at the discharge side of the chamber does not become a major factor in resisting the manual propulsion of the dispensing vehicle when the discharge ports are closed.
In this respect a movable control component 74 is provided in the pump casing and the component has a vane depressing element 75 that provides a surface 86 which is circumferentially spaced from surface 36 and also wiped by the rotor vanes when fluid is being pumped and yet another element 76 that forms the valve member 77 of the valve means 78 provided for regulating the discharge of fluid through the pump outlet 42. This control component 74 is vertically movable between extreme positions that are designated at 79 and 80 in FIGS. 6 and 7 respectively by the manipulation of a leverage mechanism 81 which is connected to an assembly 82 which includes the control component and which can be removed from the well of the container tofacilitate the cleaning of the interior of the container when the need arises. The movable component 74 is a generally elongated structure which has opposite ends 83 which are contiguous to the end members 33 of casing 31. The valve member of the component extends between the end members 33 in the valve chamber 39 and is provided with a plurality of spaced openings 84 which are aligned with the respective discharge ports 43 and the respective openings 45 in section 41 when the component is in position 79, as seen in FIG. 6. The vane depressing element 35 also extends between and is contiguous to the opposite end members 33, and when the component is in position 79 the element 35 is in a vane depressing position, designated at 85. In this position the vanes wipe the vane confronting surface 86 of the depressing element 75, as seen in FIG. 6, and the vanes are deflected into the spaces 72 so that the fluid is forced out into the discharge area and thus maintains a pressure head thereat. When the component 74 is in position 79, it will thus be seen that the valve 78 is in an open position which permits the fluid to discharge and pass out through the discharge ports 43 and element 75 is in a position which causes deflection of the vanes into the intervening spaces 72 so that the fluid is forced out into the discharge area 87 within the casing.
The valve member 77 is adapted to slide in the valve chamber and when the component is moved to position as seen in FIG. 7, the discharge ports are closed by the member and the vane depressing element assumes a nondepressing position 88 with respect to the vanes. With the element 35 in this position 88, the fluid trapped between the vanes is merely recycled into the inlet area 89 of the casing so that a buildup of back pressure in the discharge area 87 is avoided. As seen in FIG. 7, a small opening 41a is provided at the bottom of the valve chamber 39 and which communicates with the well to permit fluid to pass in and out of the space in the chamber 39 beneath the valve member as the valve is actuated.
The leverage mechanism 81 for moving the fluid control component 84 includes a pair of hand manipulatable levers 90 that are fixed at the opposite ends of a transversely arranged rod 91 that is journaled for pivotal movement at its opposite ends in the handle supporting side members 16. The container has a transversely extending rod 92 which is located adjacent the back wall 15 and which is journaled at its opposite ends in the opposite side walls 17 and 18, as seen in FIG. 2. The rod 92 has a pair of lugs 93 which are aligned in parallel in the well and located adjacent the opposite side walls '17 and 18 respectively. Adjacent the left side of the container, the end of rod 92 is equipped with a crank 94 which is linked to the adjacent lever 90 by a link 81 which is pivotally connected to the lever by a pivot pin 96 that is offset from the axis of rod 91.
The removable assembly 82 includes a pair of generally upright extending rods 97 which are fixed at their lower ends by appropriate pins 98 to the opposite ends 83 of the control component 74. Adjacent the component 74, the rods 97 are rigidly interconnected by an elongated structural member 99 that serves as a rest for the rear end of a screen component 138. The upper ends 100 of rods 97 are bent to project laterally and are received in aligned holes 101 in the adjacent lugs 93. This provides a pivotal connection between the assembly 82 and the lever mechanism 81. Each rod 97, as seen in FIG. 4, has a U- shaped member 102 which is fixed to the rod adjacent the upper end and whereat it serves as a handle to aid the worker in bending the rods inwardly to disconnect the assembly from the lug components of the leverage mechanism. In this respect, the rods 97 are equipped with inwardly projecting rods 103 adjacent the handle and which are received in the open ends of a transverse sleeve component 104 that engages suitable compression springs 105 that are carried on the rods 103. The springs serve to yieldably retain the rod ends 100 in the appropriate holes of the lugs 93. The assembly is disconnected from the leverage mechanism by drawing the handles 102 inwardly as to the positions indicated at 106 against the urgings of the compression springs 105 so as to withdraw the pivot forming ends from the lug holes 101. Once this has been done the whole assembly can be withdrawn through the container opening 21.
The levers are pivotally movable between spaced stops 90a and when the levers 90 are in the positions designated at 107 in FIG. 2, component 74 is in the position designated at 80 in FIG. 7. By manipulating the levers 90 in the direction of arrow 108, rod 92 is caused to pivotally rotate in the direction of arrow 109 by virtue of the connecting link and crank arrangement. This movement of rod 92 forces the lugs 93 to pivot downwardly to thus carry the control component into the fully seated position in the valve chamber indicated at 79 in FIG. 6. On the other hand, by drawing the lever 90 from the position shown at 110 in FIG. 1 to the position 107 shown in FIG. 2, the component is drawn upwardly to the position depicted at 80 in FIG. 7. The crank pin 94a of crank 94 engages the link 95 in a longitudinally extending slot 94b at the adjacent end of the link and link 95 carries a sleeve 111 which can'slide longitudinally on the link between the crank pin 94a and the end of an adjustable screw element 112 when the latter is adjustably withdrawn in its link mounting. This permits the crank pin to slide in the slot 94b and hence the screw element 112 may be manipulated to shorten the effective length of the link for movement of the valve member into an open position. When the link is thus shortened, the valve member will fail to fully seat itself in the valve chamber and the openings 84 will be somewhat out of alignment with the ports. Consequently, the flow of fluid material through the openings 84 will be throttled when the levers 90 are in their open positions 110.
The fluid discharge from pump 30 is conveyed exteriorly of the container by a conduit system which is connected with the pump outlet by means of the nipples 47. The conduit system 114 comprises a plurality of individual conduits 115 and each conduit 115 includes an elongated flexible tube length 116 or member which is equipped at the discharge end 117 of the conduit with a discharge nozzle 118. At its opposite end 119, the conduit is arranged to receive the fluid discharge from the port associated therewith. In this respect the associated nipple 47 is received in the end opening of the tube 116 and the tube is secured on the nozzle by a suitable retaining member 120.
The various conduits 115 are supported at their discharge ends by a bracket and holder arrangement designated at 121. The bracket 122 is pivotally mounted on the rear wall of the container 11 by means of a transverse rod 123 which is secured at its opposite ends to a pair of lugs 124 that are welded to the back wall of the container. The bracket 122 includes a tubular structural member 125 through which the rod 123 extends and is longitudinally slidable on the rod 123, as well as, pivotally movable with respect to the longitudinal axis of the rod 123. In addition to the tube member 123, the bracket 122 has a pair of arms 126 which are spaced apart and fixed at the opposite ends of tube member 125. These arms are bent as seen in FIG. 1 and are rigidly interconnected at their outer ends by another rod 127 that extends transversely of the general line of travel of the vehicle. Bracket 122 is supported against pivotal movement by a chain length 128 which is suspended from a hook, not shown, mounted on the handle supporting structural member 16 at the left side of the vehicle and which is also secured to the left arm 126 of the bracket. The links may be disengaged from the hook member so as to pivotally raise or lower the bracket when the need for such pivotal adjustment arises. Bracket 122, as previously indicated, is longitudinally slidable on rod 123 so as to enable transverse adjustment of the position of the bracket with respect to the line of travel of the vehicle. The tube member 125 has a hand manipulatable set screw type element 129 which engages the rod 123 to releasably secure the bracket against longitudinal movement on the support rod 123. By releasing the screw element 129, the bracket can be moved transversely of the line of travel and thereafter secured against such movement at its adjusted position by manipulating the screw element 129 to engage the rod 123.
The various conduits 115 are supported on the bracket at thier discharge ends 117 by means of individual holders that are designated at 130. Each holder comprises a metal block 131 which has a bore 132 in which the bracket rod 127 is received in the assembled device. The end of the block is equipped with a set screw type hand manipulatable screw element 133 which is threaded in an end bore 134 that communicates with bore 132 in the block. Element 133 is hand manipulatable to releasably secure the holder against longitudinal and pivotal movement on the rod 127 and can be manipulated to facilitate movement of the holder transversely to the line of travel of the vehicle in adjusting the position of the holder on the bracket. Each block 131 also has another bore 135 in which the nozzle element 118 of the associated conduits 115 is received. Here at the discharge end of the conduit, the conduit is secured to the holder by means of another set screw element 136 which is threaded in an end bore 137 to releasably engage the nozzle and prevent withdrawal of the nozzle from the holder.
Within the well of the container, a screen component 138 is provided to retain solid foreign objects which through inadvertence may enter the well area and otherwise interfere with the operation of the pump. The screen component includes a rectangular frame 139 which is equipped with a suitable handle 140' and a suitable mesh screen 141 to close the opening 142 of the frame. The rear end of the screen rests on the transverse member 99 of assembly 82 and is provided with suitable notches 143 to accommodate the location of the upright rods 97 of the assembly 82. The front end of the screen rests on the front wall of the container as best seen in FIGS.
As depicted in FIGS. 1 and 3, the vehicle is shown as supported on a corrugated roof section designated at 12. By providing an arrangement where the ground contact wheels can be adjusted relative to the adjacent sides, the overall spacing between the ground contact wheels can be adjusted so that the wheels can follow the grooves 145 in the corrugated section or if desired on the lands 146 of the section. In practice, different manufacturers frequently have different specifications for the spacing between the lands and grooves in the corrugated sections manufactured by them, and by providing an arrangement where the wheels can be individually moved to adjust the spacing between the wheels it is evident that the dispenser may be readily adapted to the spacing between the grooves and lands of the sections utilized at the job site regardless of the manufacturers specifications.
The bracket and holder arrangement also has certain advantages at the job site in that the specifications for laying down adhesive material at most job sites are such that the adhesive material is laid down on top of the lands 146. Consequently, once the wheels are adjusted to accommodate the spacing between the grooves and lands, the bracket can be secured to the transverse rod member 123 by adjusting screw element 129. Thereafter the holders 130 may be adjustably spaced apart on rod 127 so that the discharge from each nozzle falls on top of the adjacent lands 146 therebelow. The practice of laying down adhesive material in roof construction and repair work is such that the wheel dispenser 10 is pushed across the roof deck in parallel with the lands and at the end of the roof deck is turned around for the return trip across the deck. Consequently, once the holders are adjusted to the land spacing, all the worker merely has to do is adjust the bracket on rod 123 to thereafter line up the discharge nozzles with the lands to be covered during each traverse of the deck. Thus by providing a bracket which is adjustable transversely to the line of travel of the wheel dispenser, the need for adjustment of the discharge holders during each pass across the roof deck is avoided.
While only certain preferred embodiments of this invention have been shown and described by way of illustration, many modifications will occur to those skilled in the art and it is, therefore, desired that it be understood that it is intended herein to cover all such modifications as fall within the true spirit and scope of this invention.
What is claimed as new and what it is desired to secure by Letters Patent of the United States is:
1. A wheeled vehicle for dispensing fluid adhesive material comprising a container for the material having a well and a side wall, a fluid pump at the bottom of the well which has a rotor chamber, a rotor in the chamber and a plurality of fluid discharge ports, and a plurality of conduits arranged to receive fluid from the respective discharge ports, each of said conduits having a discharge end and including an elongated flexible member; said vehicle further comprising a container supporting wheel assembly having a ground contact wheel that is drivingly connected to the rotor and laterally adjustable and movable with respect to the side wall, a handle secured to the container for use in pushing the vehicle on a line of travel, a bracket supported by the wheel assembly, and a plurality of holders secured to and supporting the respective conduits at their discharge ends; said holders being mounted on said bracket and being individually adjustably movable transversely of the line of travel on the bracket; said pump having valve means including a valve chamber, and a valve member which is slidably movable in the valve chamber between an open position and a closed position; said discharge ports being arranged to communicate with said valve chamher, and said valve member having a plurality of openings which communicate with the respective ports and with the rotor chamber when the valve is in said open position; and a leverage mechanism connected to the valve member and including means mounted on the handle and manipulatable to move said valve member between said open position and said closed position.
2. A wheeled vehicle for dispensing fluid adhesive material comprising a container for the material having a well and a side wall, a fluid pump at the bottom of the well which has a rotor chamber, a rotor in the chamber and a plurality of fluid discharge ports, and a plurality of conduits arranged to receive fluid from the respective discharge ports, each of said conduits having a discharge end and including an elongated flexible member; said vehicle further comprising a container supporting wheel assembly having a ground cont-act wheel that is drivingly connected to the rotor and laterally adjustable and movable with respect to the side wall, a handle secured to the container for use in pushing the vehicle on a line of travel, a bracket supported by the wheel assembly, and a plurality of holders secured to and supporting the respective conduits at their discharge ends; said holders being mounted on said bracket and being individually adjustably movable transversely of the line of travel on the bracket; said pump having a casing that includes a surface defining the fluid delivery side of the chamber, and valve means that include a valve chamber and a valve member that is slidably movable in the valve chamber between an open position and a closed position; said rotor including a plurality of radially projecting flexible vanes that are arranged to wipe said surface; said pump further having a vane depressing element that is fixed to and movable with the vane member between a vane depressing position and a nondepressing position with respect to the vanes; said discharge ports being arranged to communicate with said valve chamber, and said valve member having aplurality of openings which communicate with the respective discharge ports and with the rotor chamber when the vane depressing element is in its vane depressing position and the valve member is in its open position; and a leverage mechanism connected to the valve member and the vane depressing element and including means for simultaneously moving the vane depressing element and the valve member.
3. A wheeled vehicle for dispensing fluid adhesive material comprising a container having a side wall and a well, and a pump at the bottom of the well comprising 'a casing that has means defining a rotor chamber and a valve chamber, and means providing a plurality of fluid discharge ports which communicate with the valve chamber, and a rotor which is mounted for rotation in the rotor chamber about an 'axis and which has an elongated hollow core member and a plurality of radially projecting flexible vanes which are circumferentially spaced apart at the perimeter of the rotor, and a component which is movable between a first position and a second position and which has a vane depressing element that is arranged to depress the rotor vanes when the component is at the first position, and a valve member that has a plurality of openings which communicate with the respective ports and the rotor chamber when the component is at the first position; a wheel assembly having a ground contact wheel adjacent said side wall, and an axle which is secured to and movable with the ground contact wheel, which is drivingly engaged with the core member and which is axially movable in the hollow of said core member to enable lateral adjustment of the wheel location with respect to said side; releasable means securing the axle against such axial movement; a conduit system that includes a plurality of conduits connected with the respective discharge ports, each of said conduits having a flexible member and a discharge end; a handle fixed to the container for use in pushing the vehicle along a line of travel; a bracket which is supported on the container and thereon adjustably movable transversely of the line of travel and which has manipulatab-le means releasably securing the bracket against such transverse movement; and a plurality of holders which are mounted on the bracket and thereon individually adjustably movable transversely of the line of travel, each of said holders having manipulatable means releasably securing the holders against movement on the bracket and being connected to the discharge end of a respective one of said conduits.
References Cited UNITED STATES PATENTS 1,091,952 3/1914 North 239-157 2,394,781 2/1946 Ieffords 222177 2,819,826 1/1958 Kirschmann 222267X 2,852,166 9/1958 Gandrud 222177X 2,906,437 9/1959 Wallis 222177 2,933,046 4/1960 McCray 103-117 3,148,642 9/1964 Gould 222178UX ROBERT B. REEVES, Primary Examiner D. A. SCHERBEL, Assistant Examiner U.S. Cl. X.R. 222385, 406
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|US6260743 *||Jan 26, 2000||Jul 17, 2001||Gino A. Mazzenga||Grout dispensing apparatus|
|US6492018||Oct 2, 2000||Dec 10, 2002||Karl Guddal||Apparatus for applying an improved adhesive to sheet insulation having drainage channels|
|US6641685||Mar 26, 2002||Nov 4, 2003||Karl Guddal||Apparatus for applying an improved adhesive to sheet insulation having drainage channels|
|US7056556||Jan 23, 2004||Jun 6, 2006||Millennium Adhesive Products Incorporated||Adhesive applicator|
|US8235621 *||May 28, 2009||Aug 7, 2012||Vernon Robinson||Grout dispensing system and device|
|U.S. Classification||222/625, 222/611.1, 222/406, 222/385|
|International Classification||E04D15/07, E04D15/00|