US1809796A

US1809796A - Sand-handling truck

Info

Publication number: US1809796A
Application number: US80447A
Authority: US
Inventors: Elmer O Beardsley; Walter F Piper
Original assignee: Beardsley & Piper Co
Current assignee: Beardsley & Piper Co
Priority date: 1924-12-08
Filing date: 1926-01-11
Publication date: 1931-06-09
Anticipated expiration: 1948-06-09
Also published as: FR597006A; GB242528A

Description

June 9, 1931. E. o. BEARDSLEY ET AL SAND HANDLING- TRUCK 5 Sheets-Sheet 1 Original Filed Dec. 8, 1924 June 9, 1931. E. o. BEARDSLEY ET AL ,7

SAND HANDLING TRUCK Original Filed flee. 8, 1924' 5 Sheets-Sheet 2 June 9, 1931- E. 'o. BEARDSLEY ET AL SAND HANDLING TRUCK Original Filed Dec. 8, 1924 5 Sheets-Sheet 3 June 9,, 1931. E. o. BEARDSLEY ET AL 7 1,809,796

SAND HANDLING TRUCK 5 Sheets-Sheet 4 Original Filed Dec. 8, 1924 J1me 1931. E. o. BEARDSLEY ET AL 1,809,795

SAND HANDLING TRUCK 5 Sheeis-Sheet 5 Original Filed Dec. 8, 1924 m mm WWIIIIIII/I/I/IIIIIII/I/A 2067? 0715' M0. v2rr- P? f 7,, W

The invention relates to trucks for hanm ted Jun'e 9,- 1931" 1 UNITED STATES m cs ELMER O. AND WALTER I. PIPER, OI ABSIGROBS'EO THE BEABDBLEY G: ILLINOIS Original application filed December 8, 1984, Serial No. 764,487. Divided and this 11, 1926. Serial No. 80,447.

dling sand in foundries. Y The primary object of the invention isto provide a truckwhichris equipped with new and improved sand hoisting apparatus.

Other objectsof the invention will be apparent from a consideration of the following detailed description.

This application is a division of the application filed by us, December 8, 1924 and.

serially numbered 754,487.

The invention consists in'the several novel features hereinafter set forth and more particularl defined by the claims at the conclusion ereof.

In the drawings which accompany and form a part of this 'specificationor disclosure andin which like numerals of referencedenote corresponding parts throughout the several views: Fig.1 is a side elevational view exhibiting a truck which embodies the invention and has mounted thereon'a moulding machine into which sand may bedelivered from a reservoir on the truck. Fig. 2 is a plan. Fig. 2 is a detail sectional view of a portion of the endless conveyor which forms the bottom of the reservoir. Fig. 3 is a longitudinal section. Fig. 4 is an enlarged section taken on the line 4-4 of Fi 3. Fig.

5 is an end view of the parts w ich are shown in Fig. 4. Fig. 6 is an enlargedsection taken on the line 6-6 of Fig. 1. Fig. 7 is a section taken on the line 7-7 of Fig 6. Fig. 8 is an enlarged section taken on the line 88 of Fig. 1. Fig. 9 is a section taken onthe line 99 of Fig. 8. 1

The truck which forms the subject matter of the invention is primarily for use in con nection with a foundry and is adapted to run upon a narrow track which is formed by rails 15 that are laid on the foundry floor. This truck is provided with a pair of front traction wheels 16 and a pair of rear wheels 17 which are adapted to run on the rails. The framework of the truck comprises a cast metal housing 18, through which the axle 19 for the traction-wheels 16 extends; a pair of sills 20 whichare formed of channel beams and are secured to the housing at 21so that they ex tend rearwardly therefrom; an end frameor SAND-HANDLING zrnucz,

bracket 22 which is'fixedto the sills 20 and carries studs 23 for the carrying wheels 17;

and a tubular reach 24, which has itsfront end fixed ina socket 25 ona plate 26 which:

55 its rear end fixed in a depending lug 28 1 I is bolted at 27 to the rear of housing 18, and

on bracket 22 by a clamping member 29. The

housing 18 forms an enclosure for the proi pelling mechanism' for the truck and the sand feeding mechanism.

application iled January PIPER oomrm, or calme -rumors, a-conroaa'rrorror v I ed longitudinally and is downwar y convergent, is adapted to retain a load of sand. The

' sides of reservoir 30 are fixed to the sills- 20 of the truck by means of angle bars 31 which are riveted to the reservoir, and

bolted to the top flanges of the sills. The to of this reservoir is open, so that it can be fil ed from an over-head sand delivery system this reservoir is formed by means of an end-1 or in any other suitableway. The bottom of less conveyor 33 which is adapted to feed the sand forwardly through a discharge opening 34 adjacent the bottom and in the front wall of the reservoir. This conveyor consistsof 1 an endless series of slats 35 which are adapted i i to overlap one another to form a closure; a pair of endless link belts 36, to which lugs 37,

fixedto the slats 35, are ivoted; sprocketwheels 38 for said belts, xed to aJshaft 39,

which is journalled in bearings 40 fixed to the conveyor taut.

The discharge opening 34 .is normally closed by a curved gate 45 which is vertically -movable to serveas a valve, whereby the height of the discharge opening may be va-' ried to regulate the quantity of sand dis charged from the reservoir. supported by a pair of arms 46 which are pivoted to the reservoir sides at 47 so the gate can swing upwardlyor downwardly. .These arms are preferably hung sothat ordinary pieces of scrap, which are larger than the opening, will force their way through Said gate is the opening by lifting the gate sothat theyv will not obstructthe discharge opening and 1 so Areservoir 30, which is preferabl elongatthus interfere with the regulated delivery of the sand. Mechanism is provided to raise and lower gate and consists of a crank 48 journalled in a bracket 49 and carrying a worm 50 to operate a gear 51 fixed to rotate with a drum 52 and a flexible element, such as a cable 53, wound around the drum and attached at its lower end to the gate. Drum 52 is carried by the shaft 54 which is supported in brackets 55 and 56 attached to the front of the reservoir 30. Cable 53, being flexible, permits the gate 45 to be forcibly lifted by scrap on the conveyor 33 and also permits the gate to fall by gravity to its desired position after the scrap has passed through the discharge opening. The conveyor 33 is operated to feed the sand step-by-step through the discharge opening by means of a ratchet wheel 57 fixed to one end of the shaft 39, and a pawl 58 on a rocker arm 59 which is pivoted on shaft 39 and is oscillated by a link 60. The latter is pivoted to said arm and to a wrist-pin 61 on the outer end of a shaft 61 which is driven by gearing-hereinafter described. This construction exemplifies a reservoir which is adapted to contain a load of sand and which is provided with an endless conveyor bottom for discharging the sand in regulated quantity from one end thereof.

The conveyor belt 33 discharges the sand into a screening or riddling device 62 which is disposed under the front end of said belt. This device consists of a box 63, containing a screen 64; and an inclined bottom 65. The box has an opening at one end adapted to discharge the screened sand into a pocket 66 formed in the housing 18. The riddling device is of the vibratory type, being sustained at its front endby a pair of vertically extending resilient strips 67 which have their upper ends attached to the box 63 and their lower endsto the bracket 26, and a pair of resilent strips 68 at the rear of box 63. Strips 68 have their upper ends attached to an angle iron 69 which is riveted to the box 63 and their lower ends secured at 70 to a bracket 71 which is recessed to fit around a portion of the tubular reach 24 and is clamped thereto by a U-bolt 72. The screening device is vibrated rapidly by wrist-pins 73 on the ends of a. shaft 7 4and resilient rods 7 3*.

An electric motor 90 is mounted in a pocket 91 in housing 18. It is suitably coupled to drive a coaxial shaft 92, which 1s journalled in a bearing 93 in the housing. A pinion 94 on one end of shaft 92 meshes with a gear 95 which is keyed to the shaft 74. The m0- tor 90 and the gearing that is associated therewith drive the shaft 74 to operate the wrist ins 73 which vibrate the riddle orscreenmg device. A shield 96 covers the outer end of electric motor 90. Pinion 94 and gear 95 are located in a chamber 97 on the outside of one of the side walls of the housing 18 and the outer side of this chamber is formed by a removable plate 98. This chamber is adapted to contain a lubricant to keep the gearing properly lubricated. The housing 18 is formed, as at 99, to enclose the inner side of the motor 90, so that it will not be exposed to sand in the pocket 66. This construction exemplifies a screening device which is located to receive sand from the bottom of the reservoir and for delivering the sifted sand into a pocket.

An elevator is mounted on the truck for lifting the sand from the pocket and delivering it to a hopper 85 from which it may be discharged to any desired place or projected into the conveying mechanism of a moulding machine which may be mounted on the truck and of the same construction as shown and described in our application filed December 1, 1924, and serially numbered 753,095, and our application (Serial No. 754,487) of which this is a division. This elevator comprises a sprocket wheel 75, which is secured to the shaft 61; a chain 76 equipped with sand buckets 77; an overhead sprocket 7 8 on a shaft 79, which is mounted in levers 80 which are fulcrumed at 81 on the upper end of a column 82, which is bolted, as at 83, to the top of housing 18. This column is hollow and the descending reach of the chain and buckets pass therethrough. Sprocket 75 is disposed in the pocket 66, so that the buckets, as they pass around said sprocket, will dip into the sand from the screening device 63 and elevate it. At each side of the pocket 66, angularly extending blades 84 are fixed to shaft 61 to agitate the sand and prevent it from becoming packed in the pocket, so that it will move freely into the buckets 77. As the buckets 77 pass around sprocket 78, they discharge the sand forwardly over the top of the column 82 and into the hopper 85. The elevator chain 76 is kept taut by springs 86 which are connected to levers 80 and to cables 87. One end of each cable 87 is wound around the shaft of a ratchet wheel 88 which is mounted on one side of the column 82 and is held bya pawl 89, so that the shaft may be turned to'wind up the cable 87 to vary the tension of the spring 86. This construction exemplifies one in which the sand elevator receives sand from a pocket in the truck and to which it is delivered from the reservoir carried by the truck.

Shaft 61, which operates the wrist pin 61 to operate the conveyor bottom 33 to feed sand to the screening device and carries the driving sprockets 75 for the elevator chain 76, is driven from shaft 74 by a pinion 100 which is keyed to said shaft and a gear-wheel 101 which is fixed to one end of shaft 61.'

Pinion 100 and gear 101 are disposed in a chamber 102 which is formed on one side of the housing 18 and has its outer side closed by a removable plate 103. This chamber is 'adapted to retain oi-l keep the gearingtherein efiiciently lubricated; The motor 90 and gearin driven therebyexemplify mechv anism by w ich the elevator, theendless-conveyor and the screening device may be driven from a motor mounted. on the truck."

8 The mechanism for driving the traction ,*wheels to propel the truck comprisesan 9160- v :tri'c motor. 114 which is mounted in .a'chamt her 115 formed in housing 18; .arshaft 116 mounted in a bearing 117 in the housing and coaxial with the motor 114; a .pinion 118 fixed to said shaft; a gear 119, meshing with pinion 118 and mounted on a shaft 120; a pinion 121 rigid with gear 119; agear-wheel 122 fixed to a shaft 123 which is mounted in a bearing-124 carried by a horizontal wall 125 l of the housing 18; a wrist-pin 126 on one end of shaft 123 carrying a pawl 127 and aratchet 128 loosely mounted on the tractionwheel axle 19. A clutch-collar 129 is slidable on and splined to the traction-wheel axle 19 and provided with clutch-teeth adapted to establish a driving connection between ratchet-wheel 128 and the axle, 19; This pawl and ratchet are used to propel the truck slowly from place to place or when a mouldin machine is used in connection with the true from one flask to another.

' For propelling the truck at high speed, as desired in moving the machine to and from its loading point or other places, a pinion v 130, fixed to rotate with gear 122 and shaft 123 drives a gear 131, which is loosely mounted on the traction-wheel axle and is provided with clutch teeth 132 adapted for en agement with corresponding teeth on thec utch collar 129, so that a. driving relation'may be established between the high speed gear 131 and axle 19. Motor 114 is of the reversible type, so that the machine maybe propelled cat high speed in either direction through the gear 131. A controller 134jat' the front of housing 18 is fixed to a shaft 135, which is pivoted in the housing and carries, at its inner end, a fork136 which is adapted to shift the clutch-collar 129 into engagement with either the ratchet 128 for slow forward propulsion or with the gear 131 for high speed propulsion, as well as to. shift it in a neutral position when the truck is to remain stationary. The outer end of shaft 116 is supported by a bearing bracket 117. Pinion 118 and gear 119 are mounted in a pocket -on the outside of a housing 18 which is enclosed by a removable cap 138. The remainder of the gearing for driving the traction wheels is arranged in a chamber 139 which is adapted to contain oil to keep all of the gearing well lubricated. The lower part of this chamber is formed by a shell 140 which is removably secured. to the housing 18. A

drain plug 141,is provided in the bottom of said shell. I v v The machine may be propelled by motor 114 and the high speed gearing 130, 131 to the point where th reservoir 30 will receive a load of sind. TVhen the reservoir has been filled, the machine can be'propelled throughthe same gearing and the reversal of motor. 114 to the place where the sand is tobe discharged or-when a moulding machine "is used, to the stretch where the empty flasks have been placed in readiness for filling.

Next, the operator will start the motor 90 which will operate the lower elevator shaft 61 through pinion 94, gear 95, shaft 7 4, pinion 100, and gear 101. 1 This will, operate the wrist-pin 61 to operate the conveyor bottom 33' of the reservoir 30 to feed sand into the screening device 63. Simultaneously, the

wrist-pins 73 will operate resilient rods or bars 73 which'have their rear ends connected to cross-bars 69 to vibrate the screenin device and sift the sand delivered into it y the conveyor 33. The

elevator

76, 77, will be simultaneously operated by sprockets 75 on shaft 61 and will discharge sand into the discharge hopper 85. If it is desired to have the truck move slowly during the discharging operation, lever 134 will be shifted to cause the truck to be propelled by pawl 127. When all of the sand in the reservoir 30 has been used, motor 90 will be stopped to stop the conveyor belt 33, the screening device and the elevator, and controller lever 134 will be shifted to put gear 131 into driving relation with the axle 19, so that the entire machine may be quickly propelled to the loading point and there re-loaded;

A characteristic of the machine is that it is comparatively narrow so it may be operated over a narrow space or runway 1n the foundry, which is important where the economizingof space is necessary. This results from making the reservoir comparatively narrow and longitudinally elongated and arranging the reservoir and elevator longitudinally of one another. The housing, forming part of the truck, is utilized to enclose all of the drivingmechanisms, so they can be kept well lubricated and protected from sand. The use of beams and a tubular reach in the truck is advantageous in constructing the truck so that it will properly may be modified within-the scope of the aprestricted to the detailsset forth, since these pended claims, without departing from the spirit and scope of the invention.

Having thus described the invention, what we claim as new and desire to secure by Letters Patent, is:

1. In foundry a paratus of the character described and com ination of a supporting structure, an elongated sand reservoir mounted on the structure and embodying a discharge opening in the bottom portion of one of the end walls thereof, an endless conveyor 'belt positioned to form the bottom of the reservoir and adapted, during drive, to discharge the sand through the aforesaid opening, a movably mounted gate associated with the opening and adapted to regulate the discharge of sand by the belt, adjustable gatesupporting means including a flexible suspension element operative to support the gate so that it is free to move Vertically, an elevator mounted on the structure and adapted to receive and elevate the sand discharged by the belt through the gate-controlled opening, and mechanism on the structure for driving conjointlv the belt and elevator.

2. In foundry apparatus of the character described combination of a truck, an elongated sand reservoir mounted on the truck and embodying a discharge opening in the bottom portion of one of the end walls thereof, an endless conveyor belt positioned to form the bottom of the reservoir and adapted, during drive, to discharge the sand through the aforesaid opening, a movably mounted gate associated with the opening and adapted to regulate the discharge of the sand by the belt, adjustable gate-supporting means including a flexible suspension element operative to support the gate so that it is free to move vertically, an elevator mounted on the truck and adapted to receive and elevate the sand discharged by the belt through the gatecontrolled opening, and mechanism on the truck for driving conj ointly vator.

3. In foundry apparatus of the character described combination of a truck embodying at one end thereof a cast metal housing structure having integral means forming a central pocket, a reservoir mounted on the other end of the truck and adapted to contain a supply of sand, means to discharge the sand in regulated quantity from the reservoir into the pocket, an elevator mounted on the truck and arranged so that its lower end operates in the pocket, agitators in the pocket for directing the sand from the discharge-means towards the elevator, and mechanism disposed in the housing structure for conjointly driving the elevator and agitators.

4. In foundry apparatus of the character described the combination of a wheeled truck comprising a housing extending transversely across the truck, a reservoir for contalmng a load of sand mounted on the truck, an elethe belt and elevator comprising a supporting-standard on the housing and having its lower end working in the housing, means for discharging sand in regulated quantity from the reservoir to the elevator, a motor mounted in and enclosed by the housing, said housing having chambers in its sides, gearing for driving the elevator from the motor including gears in said chambers, and removable means closing the outside of said chambers.

5. In foundry apparatus of the character described the combination of a portable truck comprising a housing extending transversely across the truck, a reservoir for containin a load of sand mounted on the truck, means %or discharging sand in regulated quantity from the bottom of the reservoir, an endless elevator mounted on the truck andhaving its lower end disposed in said housing, a transverse drive-shaft for the lower end of the elevator mounted in said housing, an electric motor carried by the housing, gearing mounted in the housing for driving the transverse shaft, and a crank connection between one end of the drive-shaft and said discharge means for operating the latter.

6. In foundry apparatus of the character described the combination of a portable truck comprising a housing extending transversely across the truck, a reservoir for containing a load of sand mounted on the truck, means for discharging sand in regulated quantity from the bottom of the reservoir, an endless elevator mounted on the truck and having its lower end disposed in said housing, a transverse drive-shaft for the lower end of the elevator mounted in said housing, an electric motor carried by the housing, gearing including an intermediate transverse shaft mounted in the housing, for driving the'elevator drive-shaft, and a crank connection between one end of the drive-shaft and said discharge means for operating the latter.

7. The combination of a portable truck comprising a housing, a reservoir for containin a load of sand mounted on the truck, an en less conveyor for discharging sand in regulated quantity from the bottom of the reservoir, an endless elevator mounted on the truck and having its lower end disposed in said housing, a drive-shaft for the lower end of the elevator mounted in said housing, an electric motor carried by the housing, gearing in the, housing for driving the elevator driveshaft, a crank connection on one end of the drive-shaft, and a pawl and ratchet operated by said connection for operating the con veyor.

8. In foundry apparatus of the character described combination of a truck, an elongated said reservoir mounted on the truck and embodying a discharge opening in the bottom portion of one of the end walls thereof, an endless conveyor belt positioned to form the bottom of the reservoir and adapted,

during drive, to discharge the sand through "the aforesaid opening, a gate adapted to regulate the discharge of sand through the opening and provided with arms pivotally connected to the sides of the reservoir, adjustable gate-supporting means including a flexible suspension element operative to support the gate so that it is free to move vertically an elevator mounted on the truck and adapted to receive and elevate the sand discharged by the belt through the gate-controlled opening, and mechanism on the truck for driving conjointly the 'belt and elevator;

Signed at Chicago, Illinois, this 6th day of January, 1926.

* ELM'ER O. BEARDSLEY.

WALTER F. PIPER.