US2754964A - Inspection apparatus - Google Patents
Inspection apparatus Download PDFInfo
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- US2754964A US2754964A US300263A US30026352A US2754964A US 2754964 A US2754964 A US 2754964A US 300263 A US300263 A US 300263A US 30026352 A US30026352 A US 30026352A US 2754964 A US2754964 A US 2754964A
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- sector
- inspection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/248—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
- B65G47/252—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them about an axis substantially perpendicular to the conveying direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/933—Accumulation receiving separated items
Description
July 17, 1956 Filed July 22, 1952 H. E. MULLER INSPECTION APPARATUS 4 Sheets-Sheet l JL J HIS A INVENTOR.
Harm an E Muller TOR/V5 Y S July 17, 1956 H. E. MULLER 2,754,964
INVENTOR. Herman E Muller BY 77/ $L HIS ORNE Y5 July 17, 1956 H. E. MULLER INSPECTION APPARATUS 4 Sheets-Sheet 3 Filed July 22, 1952 IN VEN TOR. Herman E Muller BY g J HIS TORNE Y S July 17, 1956 H. E. MULLER INSPECTION APPARATUS 4 Sheets-Sheet 4 Filed July 22, 1952 MOW INVENTOR.
Herman E. Muller H/5 A ORNEYS United States Patent INSPECTION APPARATUS Herman E. Muller, Pittsburgh, Pa., assignor to York Engineering & Construcfion Company, Pittsburgh, Pa., a corporation of Pennsylvania Application July 22, 1952, Serial No. 300,263
6 Claims. (Cl. 209-123) This invention relates to inspection apparatus, particularly apparatus for inspecting long, heavy objects, such as billets, bars, slabs, and the like. The apparatus is intended to receive such articles, automatically provide for examination of all sides, and then sort each object according to any clasification desired.
During the processing of metal billets or slabs it is necessary to inspect all sides for possible defects before approving the slabs for other uses. Prior to the present invention, it was necessary for two operators to grasp the ends of a heavy slab with long wrenches and turn it over on a table to expose each side while another operator inspected the slab. Such a procedure is arduous and time-consuming.
The present invention provides a rapid means of inspection requiring only one operator and resulting in a greatly increased rate of production. In one form, the invention provides an inspection table onto which slabs or billets are advanced one at a time transversely to the table. Lifts mounted on the table engage the billets and turn them over to expose each side and advance the billets along the inspection table.
The present invention also provides novel sorting and receiving apparatus associated with the table. In one form, this apparatus comprises a container having a plurality of compartments which is movable with respect to the discharge end of the inspection table. Automatic controls place a desired compartment in a receiving position adjacent the table.
The accompanying drawings illustrate a presently pres ferred embodiment of the invention in which:
Figure l is a side elevation showing a general arrangement of parts;
Figure 2 is a plan view of an inspection table and eccentric for pivoting the side lifts;
Figure 3 is a section of Figure 2 on the line III-III;
Figure 4 is a section of Figure 2 on the line lV-IV with the auxiliary delivery chute and receiving container also shown for completeness; and
Figures 5 and 6 are side elevations similar to Figure 4 at different stages of the operation of the inspection table.
The embodiment illustrated consists chiefly of three general parts: a feeder for advancing billets, an inspection table for examining the slabs or billets, and a container for receiving the examined billets in different compartments in accordance with their classification.
Referring to these parts in the order stated, and with reference principally to Figures 1 through 4, the feeder may be any standard delivery apparatus such as a conveyor or chain feed, or the billets may be simply laid one by one on the inspection table by a crane or even by hand. However, the preferred practice is to use a feeder of the ejector type such as described in my copending application filed July 22, 1952, Serial No. 300,262. If desired, the operation of the ejector may be synchronized with the operation of the inspecting table as hereafter described.
The feeder of the preferred embodiment comprises, as
shown most clearly by Figure 4, a driven chain 10 which passes over a sprocket 11 journaled for rotation in a support wall 12 and consists of linked flights 13. Angle bars 15 help support the chain 10 and direct its path of travel. Some of the flights 13 have lugs 16 which push slabs 17 over a hump 18 of the wall 12 onto a rack 14 having a stop 19. In Figure 4, I have shown the apparatus as handling slabs. Here a slab 17 depresses an arm 29 of a limit switch 21 opening an electrical circuit for the drive for the chain 10.
The ejecting apparatus is directly beneath the slab retained by the stop 19 and consists of two pairs of spacedapart, substantially parallel plates of which only one plate of each pair can be seen in the views shown. As more fully described in my copending application above referred to, one pair including plate 22 pivots on the axle 23 journaled in the support wall, while the other pair including plate 24 is inserted between the first pair. 'All four plates pivot about the axle or pin 25. Both plates of the inner pair also pivot about an axle 26 joined to a ram 27. The ram is hinged to a crank arm 28 secured to a shaft 29 which has another arm 30. When the latter is rotated about this shaft as by a piston 31 of an air actuated cylinder, the ram receives an upward thrust causing the plates to move upwardly and lift the slab 17 over the stop 19. Thereafter, the slab slides down the wall 12 onto the inspection table. A pin 32 of the plate 24 registers with a slot 33 of the plate 22 to prevent the inner pair of plates from traveling too far about the axle 25.
The inspection table is in the form of at least two I beams 35, each tapered at its bottom to provide a wider base. The beams are spaced from each other so as to support a billet or slab adjacent its ends. For long billets more beams may be used. All have the same construction and therefore one only is shown in the drawings. A cross beam 36 resting at its ends on a block 37 partially supports the I beams 35 and accessory parts.
The surface 38 of the table has a plurality of transvers ely extending mounds designed to receive slabs laid parallel thereto. The first mound is in the form of a ridge 39 on the receiving end of the table against which the entering slabs strike. This ridge prevents the slabs from traveling too far down the table and centers them in a proper position to be engaged by a lift at the side of the table. The second transverse mound is in the form of a ridge 40 having a gradually sloping side in the direction toward the first ridge 39. The ridge 40 is designed to receive the slab turned over and advanced from ridge 39. The ridge 40 also centers the slab in its turned condition for proper engagement with another lift.
The lifts which simultaneously turn and advance the slabs down the inspection table comprise sectors 41, 42, and 43. The sectors are parallel to the sides of the table and pivot on the beam 35 at a point adjacent their apices and at points on the table sides below and just before the apices of the ridges 39 and 40 looking from the receiving end of the table. In this way, when the sectors are pivoted, they engage the slabs cleanly as they lie against the ridges.
The sectors are attached as described to both sides of the table, usually in a side-to-side staggered relation. The flat sides of the sectors which contact the slabs may be provided with liners 44 to prevent excess wear.
A bar i5 pivotally connects to sectors 41 and 43 on one side of the table 34, and a bar 46 similarly joins sector 42 on the other side. The bars in turn are hinged by pins 47 and 48 between the forked ends of connecting rods 49 and 5th. The latter are rigidly linked by a cross strip 51 which is fixed in a slot 52 of a pitman 53 free to turn about a shaft 54. A strap 55 bolted to the pitman holds it in place. The shaft 54 is part of an eccentric including crank arms 56 and 57. Arm 56 is fixed to the main drive shaft 58 which connects to a shaft 59 of a gear reduction box 60 through a coupling 61. The box may be conventionally driven through the shaft 62 by a motor 63. A suitable bearing in the bearing housing 64 sustains the shaft 58. In the same manner, crank 57 is fixed to a shaft 65 joined to another shaft 66 through a coupling 67. A hearing in the bearing housing 68 supports the shaft 65, while the platform 69 carries the entire eccentric construction and assists in supporting the inspection table 34. The shaft 66 may drive another eccentric operating sectors on a beam supporting the other end of the billets or slabs. Adjacent the discharge end of the beams 35 forming an inspection table is an operators platform 70 where one or more inspectors (depending on length of sections handled), examine the slabs as they turn over on their way to that end of the table. The platform has a cabinet 71 and control box 72 for regulating and control equipment such as push button controls for electrical circuits used to operate various parts of the machine. A delivery chute 73 is also attached to the discharge end of the table and comprises a pair of runners 74 and 75 bolted to lugs 76 and 77. Girders 78 connect the lower ends of the runners to similar lugs 79 at the bottom of the I beam 35 forming the inspection table.
The chute 73 feeds into a container generally shown at 80 having a plurality of compartments 81 formed by a bottom support frame 82 and vertical transverse sides. Sides 83 are stationary, but the sides 84 disposed therebetween may be moved to various recesses 85. This allows the container to accommodate billets and slabs of different widths. Wheels 86 on axles 87 support the frame 82 over rails 88 secured to a base 89.
Forward and backward movement of the container 80 is accomplished by a reversible motor 90 driving a gear reduction box 91 having a drive shaft 92 supporting a sprocket. A link chain 93 passes around this sprocket and an idler sprocket which are disposed at the ends of the rails 88. The free ends of the chain join lugs 94 at the extremities of the container 80. Stops 95 at both ends of the rails keep the container on track, while a trough 96 between the rails provides room for the bottom length of the chain. The tension in the chain is adjusted by varying the position of the idler sprocket. A block 97 has side slots provided with rails along which bearing flanges 98 can move. An axle 99, which turns in the bearing, supports the idler sprocket. Arms 100 free to turn about the axle 99 are placed on either side of the idler sprocket and are further hinged to a corresponding side of a U member 101. The latter is fixed to a threaded stud 102 passing through a threaded opening in the back of the block 97. Lock nuts 103 hold the stud in any desired axial position.
In an over-all operation of the embodiment, beginning with the inspection table clear, the operator presses a push button starting the feeder circuit. The chain 10 advances a slab to the stop 19 where the slab depresses the arm 20 opening the limit switch 21. In this position the switch stops the chain and by conventional electric circuits starts the table motor 63 turning the shaft 65 in the direction of the arrows 104 of Figures 5 and 6. After one revolution of the shaft, a crank arm strikes another limit switch stopping the motor 63. During this revolution, however, the sectors 41, 42, and 43 move to a receiving position as shown in Figure 5, and the delivery apparatus lifts a slab over the stop 19. For this action an operator can actuate the piston 31 as described in my mentioned copending application or the delivery apparatus may be operated by an eccentric on a shaft turned by the same motor 63. The slab slides off the support wall 12 and against the ridge 39 to the position X in Figure 5. Of the two faces a and b and the two sides 0 and d of the billet, face a is easily inspected at this stage.
The operator now presses the same push button repeating the operation just described. When the sector 43 is pivoted this time, it pushes the slab from the X position over the ridge 39 onto the curved back of sector 42 which is also pivoted in unison with sector 43. As the sector 42 descends, the bottom edge of the slab catches against the other side of the ridge 39 forcing the slab to slide over the curved back of sector 42. The sector 43 rotates more than 90 (i. e, the fiat side of the sector which engages the slab moves past the vertical) to insure that the slab falls against the curved back of sector 42. After this sector is below the surface of the table, the slab falls forwardly to position Y and exposes face b and side 0 for inspection.
The operator next presses the same push button starting the feeder circuit, and the entire operation as just described is repeated. This time when sector 42 is pivoted, it lifts the slab over the ridge 40 onto the curved back of sector 41. As before when this sector descends, the slab catches against the down-table side of ridge 40 and slides along the back of sector 41. When this sector is below the table, the slab drops to position Z where side (I is inspected.
The operator now decides into what compartment of the container 80 the billet in position Z should go and by conventional electric controls operates the described machinery to register the selected compartment with the chute. Dotted lines 105 in Figures 1 and 4 show some of the positions the sides 83 and 84 may take when the container moves.
Although the positioning of the container, the feeding apparatus, and the inspection apparatus may all be independently controlled, it is also possible by the use of standard electric controls to have at least some of these operations initiated by the ending of a preceding one. Also, it is possible to join the eccentric drive shaft 66 and the link chain drive shaft 92 to other shafts aligned therewith through synchronizing jaw clutches. This construction permits an inspection unit to be operated independently when relatively short billets are processed, or two or more inspection tables may be joined by the clutches into one single larger inspection unit when long billets are processed.
While the foregoing disclosure describes a presently preferred embodiment, it is understood that the invention may be practiced in other forms within the scope of the following claims.
I claim:
1. Inspection means for elongated members comprising in combination a table having an irregular surface contour shaped to receive the elongated members transversely thereof, a feeder for so depositing such members one at a time onto the table, sector members pivotally joined to the sides of the table in suifistautially a staggered relation, bars pivotally secured to the sector members on a given side of the table to pivot them in unison, and a reciprocating rod for imparting an axial motion to the bars whereby in an upward pivot, a flat edge of a sector member engages an elongated member to advance it against the arcuate edge of an adjacent sector member, and whereby in a downward pivot, said arcute edge guides the advanced elongated member into a new position on the table, a container for receiving the elongated members from the table consisting of a plurality of compartments, and locomotive means for registering a desired compartment in a receiving position.
2. Inspection means for slabs and like articles comprising in combination a table having an irregular surface contour in a longitudinal direction which is shaped to receive slabs transversely thereof as they progress from one end of the table to the other, a feeder for advancing slabs singly onto the receiving end of the table, sectors pivotally joined to the sides of the table in substantially a side-to-side staggered relation at a point on the sectors adjacent their apices, a bar positioned on each side of the table and pivotally secured to the sectors on that side, eccentric means to impart reciprocal movement to the bars simultaneously substantially in an axial direction whereby in an upward pivot of two adjacent sectors, a flat edge of one engages an article lying on the table and simultaneously turns and advances the article against the arcuate edge of the adjacent sector, and whereby in a downward pivot of the sectors, said arcuate edge slidingly engages said advanced article to complete the turning thereof and deposit the article in a new inspection position on the table, a container having a plurality of compartments positioned by a discharge end of the table and adaptable to move with respect thereto, and locomotive means for moving the container and registering a desired compartment in a receiving position.
3. Inspection means for slabs, billets, and like articles, comprising in combination a table having a plurality of transverse mounds to receive slabs laid parallelly thereto as the slabs progress from one end of the table to the other, a feeder for advancing slabs singly onto a receiving end of the table, sectors pivotally joined to sides of the table in substantially a side-to-side staggered relation at a point on the sectors adjacent their apices, a bar positioned on each side of the table and pivotally secured to the sectors on that side of the table at a point on the sectors substantially at the lower end of the arc, eccentric means to impart reciprocal movement to the bars simultaneously in an axial direction whereby in an upward pivot of two adjacent sectors, a flat edge of one sector engages an article lying on the table and simultaneously turns and advances it over a mound and against an arcuate edge of the other sector, and whereby in a downward pivot of the sectors, said arcute edge slidingly engages said advanced article to complete the turning thereof and deposit it in a new inspection position on the table, a container having a plurality of compartments positioned by a discharge end of the table and adaptable to move with respect thereto on guide rails, and locomotive means to move the container on the rails and register a desired compartment in a receiving position.
4. Apparatus for inspecting all sides of a slab, billet, or like article, comprising in combination a table having a surface provided with a transverse ridge on a receiving end and a second transverse ridge toward the discharge end; a feeder for placing slabs one at a time transversely to the table and against the ridge; sectors pivotally joined to the sides of the table in substantially a side-to-side staggered relation; said joining being elfected at a point on the sectors adjacent their apices, and on the sides of the table at least at points below and just before the apices of the ridges looking from a receiving end of the table; a bar positioned on each side of the table and pivotally secured to the sectors on that side of the table at a point on the sectors substantially at the lower end of the arc; an eccentric to impart reciprocal movement to the bars simultaneously in an axial direction whereby in an upward pivot of two consecutive sectors, a flat edge of the sector nearer the receiving end engages a slab lying on the table and simultaneously turns and advances the slab over a ridge and against the arcuate edge of the other sector, and whereby in a downward pivot of the sectors, 0
said arcuate edge urges the advanced slab against the downtable side of the ridge by slidingly engaging the slab thereby completing the turning thereof and depositing the slab in a new inspection position on the table; a delivery chute at the discharge end of the table; a container having a plurality of compartments adaptable to move with respect to the chute on guide rails; and locomotive means to move the container on the rails and register a desired compartment with the delivery chute.
5. An inspection table for slabs, bars, billets and the like, comprising a surface for supporting the article to be inspected and across which the article is moved during the inspection, at least two sectors mounted adjacent said surface for rotation about points adjacent their respective apices, each of said sectors being rotated so that a flat side of the sector moves from below the articles on said surface to raise an article to be inspected and positioned above it on said surface and turns the article about it longitudinal axis, ridges in said surface extending generally parallel to the longitudinal axis of the article to be inspected as it moves across said surface, said ridges being positioned adjacent the pivot points of the sectors and adapted to engage the edges of said article and assist the sectors in turning said article about its longitudinal axis, and means for rotating the sectors simultaneously whereby during rotation the flat sides of adjacent sectors form substantially the same angle with said supporting surface.
6. An inspection table for slabs, bars, billets, and the like comprising a surface for supporting the article to be inspected and across which the article is moved during the inspection, at least two sectors mounted adjacent said surface for rotation about points adjacent their respective apices, each of said sectors being mounted with their curved surfaces facing towards the end of the table on which the articles ars first placed and being rotated so that a flat side of the sector moves from a position below an article on said surface to raise the article from said surface and turn the article about its longitudinal axis, said sectors being so positioned from each other along the surface that an article moved by one of the sectors engages the next sector in the line of movement of the article across the table, and means for rotating the sectors simultaneously and more than from a position below the article whereby the article raised and turned by a sector falls against the curved side of the next sector.
References Cited in the file of this patent UNITED STATES PATENTS 374,680 Keeney Dec. 13, 1887 1,650,053 Straight Nov. 22, 1927 2,069,290 Taylor Feb. 2, 1937 2,322,655 Morgan June 22, 1943 2,349,776 Uhich May 23, 1944 2,429,071 Pirie Oct. 14, 1947 2,489,404 Davis Nov. 29, 1949 2,506,087 Kadell May 2, 1950 2,609,095 Graham et al Sept. 2, 1952 FOREIGN PATENTS 967,744 France Nov. 10, 1950
Claims (1)
- 6. AN INSPECTION TABLE FOR SLABS, BARS, BILLETS, AND THE LIKE COMPRISING A SURFACE FOR SUPPORTING THE ARTICLE TO BE INSPECTED AND ACROSS WHICH THE ARTICLE IS MOVED DURING THE INSPECTION, AT LEAST TWO SECTORS MOUNTED ADJACENT SAID SURFACE FOR ROTATION ABOUT POINTS ADJACENT THEIR RESPECTIVE APICES, EACH OF SAID SECTORS BEING MOUNTED WITH THEIR CURVED SURFACES FACING TOWARDS THE END OF THE TABLE ON WHICH THE ARTICLES ARE FIRST PLACED AND BEING ROTATED SO THAT A FLAT SIDE OF THE SECTOR MOVES FROM A POSITION BELOW AN ARTICLE ON SAID SURFACE TO RAISE THE ARTICLE FROM SAID SURFACE AND TURN THE ARTICLE ABOUT ITS LONGITUDINAL AXIS, SAID SECTORS BEING SO POSITIONED FROM EACH OTHER ALONG THE SURFACE THAT AN ARTICLE MOVED BY ONE OF THE SECTORS ENGAGES THE NEXT SECTOR IN THE LINE OF MOVEMENT OF THE ARTICLE ACROSS THE TABLE, AND MEANS FOR ROTATING THE SECTORS SIMULTANEOUSLY AND MORE THAN 90* FROM A POSITION BELOW THE ARTICLE WHEREBY THE ARTICLE RAISED AND TURNED BY A SECTOR FALLS AGAINST THE CURVED SIDE OF THE NEXT SECTOR.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US300263A US2754964A (en) | 1952-07-22 | 1952-07-22 | Inspection apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US300263A US2754964A (en) | 1952-07-22 | 1952-07-22 | Inspection apparatus |
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US2754964A true US2754964A (en) | 1956-07-17 |
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US300263A Expired - Lifetime US2754964A (en) | 1952-07-22 | 1952-07-22 | Inspection apparatus |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2990512A (en) * | 1958-12-30 | 1961-06-27 | Magnaflux Corp | Billet inspection apparatus |
US3200966A (en) * | 1962-12-11 | 1965-08-17 | Magnaflux Corp | Rapid transverse unloading mechanism |
US3379307A (en) * | 1966-10-19 | 1968-04-23 | Southwest Forest Ind Inc | Lumber sorting apparatus |
US3656617A (en) * | 1968-10-28 | 1972-04-18 | Metallurgie Hoboken | Device for manipulating copper bars |
US3759384A (en) * | 1971-09-01 | 1973-09-18 | B Holmberg | Apparatus for grading lumber |
US4936437A (en) * | 1989-01-09 | 1990-06-26 | Gearhart Clarence R | Board inverting apparatus |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US374680A (en) * | 1887-12-13 | Orange-grader | ||
US1650053A (en) * | 1924-09-25 | 1927-11-22 | Halver R Straight | Mechanism for handling building blocks and the like |
US2069290A (en) * | 1928-05-18 | 1937-02-02 | American Can Co | Sorting and counting device |
US2322655A (en) * | 1942-01-21 | 1943-06-22 | Morgan Construction Co | Billet sorting apparatus |
US2349776A (en) * | 1942-09-12 | 1944-05-23 | Arnold E Ulrich | Fruit sizing machine |
US2429071A (en) * | 1941-06-10 | 1947-10-14 | Pirie Freda | Loading apparatus |
US2489404A (en) * | 1947-05-24 | 1949-11-29 | Udylite Corp | Conveying apparatus |
US2506087A (en) * | 1945-03-31 | 1950-05-02 | Nat Steel Corp | Apparatus for inspecting and sorting sheets |
FR967744A (en) * | 1948-06-16 | 1950-11-10 | Sorting machine for tubers, fruits and the like | |
US2609095A (en) * | 1949-02-26 | 1952-09-02 | Anaconda Copper Mining Co | Apparatus for sorting heavy bars |
-
1952
- 1952-07-22 US US300263A patent/US2754964A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US374680A (en) * | 1887-12-13 | Orange-grader | ||
US1650053A (en) * | 1924-09-25 | 1927-11-22 | Halver R Straight | Mechanism for handling building blocks and the like |
US2069290A (en) * | 1928-05-18 | 1937-02-02 | American Can Co | Sorting and counting device |
US2429071A (en) * | 1941-06-10 | 1947-10-14 | Pirie Freda | Loading apparatus |
US2322655A (en) * | 1942-01-21 | 1943-06-22 | Morgan Construction Co | Billet sorting apparatus |
US2349776A (en) * | 1942-09-12 | 1944-05-23 | Arnold E Ulrich | Fruit sizing machine |
US2506087A (en) * | 1945-03-31 | 1950-05-02 | Nat Steel Corp | Apparatus for inspecting and sorting sheets |
US2489404A (en) * | 1947-05-24 | 1949-11-29 | Udylite Corp | Conveying apparatus |
FR967744A (en) * | 1948-06-16 | 1950-11-10 | Sorting machine for tubers, fruits and the like | |
US2609095A (en) * | 1949-02-26 | 1952-09-02 | Anaconda Copper Mining Co | Apparatus for sorting heavy bars |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2990512A (en) * | 1958-12-30 | 1961-06-27 | Magnaflux Corp | Billet inspection apparatus |
US3200966A (en) * | 1962-12-11 | 1965-08-17 | Magnaflux Corp | Rapid transverse unloading mechanism |
US3379307A (en) * | 1966-10-19 | 1968-04-23 | Southwest Forest Ind Inc | Lumber sorting apparatus |
US3656617A (en) * | 1968-10-28 | 1972-04-18 | Metallurgie Hoboken | Device for manipulating copper bars |
US3759384A (en) * | 1971-09-01 | 1973-09-18 | B Holmberg | Apparatus for grading lumber |
US4936437A (en) * | 1989-01-09 | 1990-06-26 | Gearhart Clarence R | Board inverting apparatus |
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