US2558318A - Apparatus for trimming appendages for pottery ware - Google Patents

Apparatus for trimming appendages for pottery ware Download PDF

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Publication number
US2558318A
US2558318A US23797A US2379748A US2558318A US 2558318 A US2558318 A US 2558318A US 23797 A US23797 A US 23797A US 2379748 A US2379748 A US 2379748A US 2558318 A US2558318 A US 2558318A
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Prior art keywords
appendages
appendage
trimming
carriers
arm
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US23797A
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Norman I Sebell
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Onondaga Pottery Co
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Onondaga Pottery Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/18Apparatus or processes for treating or working the shaped or preshaped articles for removing burr
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183Product mover including gripper means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/566Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669Work clamp

Definitions

  • This invention has to do with a method for trimming appendages, such'as handles, lugs, etc.,
  • Appendages for articles of pottery ware are usually formed by being cast in a two-part mould formed with a plurality of concavities for simultaneously casting a number of handles, or other appendages, at a time. These concavities, in the mould are connected by a common runner or sprue, the arrangement being such that the liquid clay or material flows into each concavity at the side of the appendage to be attached to the article of ware.
  • This invention has as an object a method by whic happendages for pottery ware can be trimmed to shape and size without chipping, breaking, or otherwise damaging the appendage.
  • This invention has .as a further object an apparatus operable to automatically trim the appendages with great accuracy and uniformity, and to deposit the trimmed appendages successively upon an accumulating table, or the like, where they are made available to the operator that applies the trimmed appendages to the articles of were known in the trade as ahandler.
  • the invention has as a further object apparatus of the type referred to embodying a structure operable to effect the trimming operation with efficiency and particularly, without chipping or otherwise damaging the appendage.
  • Figure 1 is a top plan view of an apparatus embodying my invention.
  • Figure 2 is a side elevational view.
  • Figure 3 is a view taken on line 3-4, Figure 2.
  • Figure 4 is a view taken on line 4-4, Figure 1.
  • Figure 5 is an isometric view of one of the appendage carrying fixtures and contiguous portion of the conveyor.
  • Figure 6 is a view, corresponding to line 6l, Figure 4, with parts broken away and parts in section.
  • Figure 7 is an enlarged fragmentary elevational view of the conveyor indexing mechanism shown in the upper center portion of Figure 3.
  • Figure 8 is a view taken on line 8-8, Figure 4.
  • Figure 9 is a sectional view of the driving clutch structure.
  • Figure 10 is a side elevational view of the appendage retaining mechanism positioned at the upper end of its movement.
  • the apparatus is built in a suitable framework consisting of a rear pair ofvertical members 20, and a forward pair 2
  • a suitable framework consisting of a rear pair ofvertical members 20, and a forward pair 2
  • upper rails 23 extend forwardly and have affixed. to their forward ends a shelf 26 supported by braces 21 carried by the legs 25.
  • the shelf 26 is formed with an arcuate recess to receive a turn table support 28 on which the trimmed appendages are placed.
  • the turn table 28 is mounted on a shaft 29 extending upwardly from a housing 30 containing a gear reduction and which is suitably mounted on the lower rails 24, Figure 2.
  • the appendages 32 are intermittently advanced to a trimming station by a conveyor mechanism including an endless series of appendage or carrying members, or fixtures.
  • a pair of bearing block-s 33 are secured to the under side of the top plate 22 in proximity to the rear edge thereof, and a similar pair 84 are mounted 3 on the plate adjacent the forward edge thereof.
  • a shaft 35 is Journalled in the bearing blocks 33 and carries a sprocket 35.
  • a shaft 31 is journalled in the forward bearings 34 and carries a' sprocket 3'8.
  • a chain 39 is trained over these sprockets and has secured to it at uniform spaced intervals blocks 40.
  • the rear portion of the top plate 22" is recessed as at 4
  • Guide rails 43 are secured in spaced apart relation to the top of the plate 22 and form a track along which the blocks 40 are moved by the upper run of the chain 39.
  • the blocks 40 are formed with depending flanges 45 which cooperate with the rails 43 to accurately guide the blocks during their movement on the rails.
  • the blocks 40 form the base portion of the appendage carrying members.
  • the blocks 40 are formed on their upper surfaces with a recess extending to the inner side edges of the blocks, and plates 46 are positioned in these recesses and are adjustable both-lengthwise and transversely of the conveyor chain.
  • Each plate 46 is formed with a recess in the 30 top surface thereof adjacent .the inner edge of the plate. This recess is of such shape and form as to receive the plastic clay appendage.
  • these recesses 50 are of general ear formation to receive cup handles with the inner edge portion of the handle projecting inwardly beyond the inner edge of the plates 46. It will be understood that the plates 46 are properly recessed to receive the appendage to be trimmed.
  • the appendages are placed in the plates 46 at station A, Figure 1.
  • the carriers are intermittently advanced to. station B where the appendages are trimmed.
  • the carriers are then advanced forwardly and downwardly around the forward sprocket 38, and the trimmed appendages are deposited on the turn table 28, as indicated in Figure l, the edges v52 having been trimmed to proper shape and contour at the trimming sta tion B.
  • the appendages 32 are trimmed by a pair of cutters which are normally maintained in spaced apart relation and which are moved together as each appendage is presented at the station B.
  • These cutters consist of blades 54, 55, mounted on like ends of arms '55, 51, respectively. These arms are journalled at their opposite ends on a. pivot pin 60 carried in a bracket 6
  • the blades are detachably secured to thefree ends of the arms by being clamped thereto as by clamp bars 63 and screws i4 threading into the arms.
  • the outer end edges of the arms 56, 51 are curved or formed to give the blades 54, 55, the desired shape to trim the appendages to the'proper contour lengthwise or axially of the appendages.
  • the distance the blades are positioned from the pivot pin 50 determines the transverse arcuate contour of the contour of the piece of ware relative to its vertical axis. This, of course, is usually not on a uniform radius unless the piece of ware happens to be of spherical formation. For example, on
  • the appendage might not be trimmed on a uniform curvature, but might include two or more curvatures. This situation is taken care or by proper formation of the cutting blades 54, 55, which can be conveniently done by properly l0 contouring the ends of the arms 56, 51, to which the thin steel blades are attached, as described.
  • the blades enter opposite side edges of the ap pendage and meet in biting or nipping engagement at approximately the center of the appendage, whereby both of the outer edges are of sharp and proper formation.
  • a bracket 65 is hinged at one end to the top plate 22, as at 55.
  • a weight 81 is secured to the bracket adjacent the free end thereof, and a yieldable pad 68 of felt, or like material, is secured to the under side of the weight.
  • the arrangement is such that when the cutters are in open position, as shown in Figure 3, the pad 68 is elevated above the path traveled bythe appendages. However, when the cutters are moved toward the appendage, the weighted pad engages the appendage, exerting a slight pressure to hold the same in the recess during the trimming operation, see Figure 4.
  • the machine includes motion transmitting mechanism for intermittently advancing the car- 50 riers 40 and operating the trimming cutters in timed relation.
  • a shaft I0 is journalled in bearing brackets II also depending from the under side of the top plate 22. This shaft has secured to it a disk 15, the periphery of which is formed with a cam lobe 16.
  • a crank pin I8 is mounted for rotation'in the disk and is formed with a head I9 in which a tubular member 80 is clamped, as by screw 8
  • the end of the tube is provided with a shoulder 83, for further assurance that the tube will not move in the head member 18 during that portion of the cycle of operation wherein force is transmitted from the shaft 10 to the member 8
  • the opposite end of the member 80 is provided with a plug 84 apertured to slidably receive a rod 85, the inner end of which is formed with an enlarged head portion 86.
  • a helical compression spring 81 encircles the rod and is interposed between the plug 84 and the head 86, thereby urging the rod inwardly.
  • the outer end of the ranged to successively engage notches 9
  • sprocket wheels 88, 88 are intermittently rotated in the same direction and the appendage carriers 40 are intermittently advanced irom right to left, Figures 2 and 6,. whereby the appendages are advanced from the loading station A to the trimming station B, Figure l, and the trimmed appendages deposited upon the accumulating table 28.
  • the apparatus includes means operable to accurately position the appendages at the trimming station B, whereby all of the appendages will be accurately and uniformly trimmed.
  • the fixture plates 48 are adjustable in the individual carrying blocks 40 both lengthwise and transversely of the conveyor chain.
  • a stop member is moved into the path of movement of the carriers 80.
  • This member is fixed in the frame relative to the trimming cutters, and the apparatus further includes provision for yieldingly maintaining the carrier against the stop member during the trimming operation. In this manner, each carrier is accurately positioned lengthwise of the conveyor chain during the trimming operation.
  • This stop member consists of an arm 88 pivoted at one end to a bracket 89 depending from the top plate 22.
  • the opposite end of the arm is formed with an upwardly extending portion I00 having a face IOI against which the carriers abut.
  • the arm 98 is urged downwardly by a compression spring I02 interposed between the arm and the top plate 22, see Figure 6, and the arm is provided with a roller I08 riding upon the periphery of the This arrangementaecurafeiy positions the appendage from the pivot'pin 80 of the cutter carrying arms 88, 81.
  • This arrangement avoids the necessity of initially constructing the machine with precision and effects accurately positioning of the appendage carriers regardless of wear of the parts incident to the operation of the machine.
  • the shaft 10 is also provided with a cam II8 which is eflective to move the cutting blades to open position, as shown in Figure 3.
  • An actuating arm H8 is pivotally mounted intermediate its ends to a bracket II1 depending from the under side of the top plate 22, see Figure 8.
  • An adjustable link H8 is pivotaliy connected to one end of the arm and extends upwardly through an aperture in the top plate, and is connected to the lower cutter arm 81 by a pin II8.
  • An adjustable linkage I20 is connected to the arm II8 on the opposite side of its pivot III,
  • this linkage also extends through the top plate and is connected to the upper cutter arm 88, as by cap screw I22.
  • the rear end portion of the arm II8, to which the linkage I20 is connected, is urged downwardly by a helical compression spring I28 interposed between the arm crank disk 15.
  • the forward end of the top plate 22 is recessed to a depth indicated at 42, this recess permitting the carriers to travel downwardly about the forward sprocket 88, and also providing for the upward movement of the portion I00 of the stop arm 88.
  • a block I08 is secured to the top plate 22, as by screws I08. This block is formed with spaced apertures to receive guide pins carried by a shoe I I0. The block is recessed intermediate the guide pins to receive a compression spring III urging the shoe inwardly toward the conveyor. A screw II2 serves as a stop for this inward movement of the shoe.
  • the leading end of the shoe is chamfered, and is engaged by the outer side edge of each of the carrier blocks 40 as it is advanced in juxtaposition to the cutting knives, and the block is moved inwardly toward the knives with the outer dependand the top plate 22, see Figure 8.
  • This portion of the arm is also provided with a cam roller I25ridin'g upon. the periphery of the cam III, see Figures 4 and 8.
  • the cam I I5 is formed with alow portion which permits the spring I28 to r plained.
  • the carriers 40 are advanced downwardly about the forward conveyor sprocket 88 in a two-step movement. In the initial step or portion of this movement, the carriers are moved from horizontal position to vertical position, as shown in Figure 2. During the subsequent portion of their advancement, the carriers are moved from the vertical position to the inverted position in proximity to the accumulating table 28.
  • means is provided to retain the trimmed appendage in the carriers until the carriers have reached the inverted position with the appendage in close proximity to the accumulating table.
  • the ratchet arm 88 is being moved forwardly.
  • An arm I88 is journalled on the shaft 81 and is provided with a stud I81 movable in. the slot] veyor, the arm I36 is being rotated upwardly in a clockwise direction, Figure 6.
  • a blade I36 is pivotally mounted on the outer end of the arm I36 and is urged toward an adjustable stop screw I39 by a torsion spring I48.
  • the apparatus is operated by a motor I42 mounted on the housing of a gear reduction I43 which, in turn, is supported by brackets I44 and braces I45 extending rearwardly from the forward legs 2I.
  • the output shaft of this power unit is .provided with a pair of sprockets I46, I41.
  • -A driving chain I48 is trained over the sprocket I46 and a sprocket I49 journalled on the shaft,16.
  • a chain I50 is trained over the sprocket I41 and over a sprocket I5I on the gearreduction 38 to effect rotation of the turntable 28 at slow speed.
  • the bore of the sprocket I49, Figure 9, is formed onopposite sides with keyways I52.
  • the shaft 10 is slotted, as at I53, to receive a flat key I54, the ends of which project into the keyways I52.
  • a collar I is fixedly secured to the shaft 10 in proximity to the sprocket I49, the sprocket and the collar being arranged on the shaft intermediate the bearings H and by which the sprocket and collar are restrained against axial movement.
  • the outer end portionof the shaft 10 is bored to slidably receive a rod I58 slotted near its inner end to receive the key I54.
  • a compression spring I6I is arranged in the bottom of the bore and yieldingly urges the rod and key to the left, Figure 9, so that the ends of the key move into the keyways I52 of the sprocket.
  • the collar I 55 is formed with similar keyways I62. Normally, the ends of the key I54 are positioned in the keyways in the sprocket by action of the spring I6I.
  • the outer end of the rod I58 is formed with a square portion I63, or otherwise formed to take a crank.
  • the crank may be applied to the end of the rod I58 and the rod pushed inwardly, moving the key I54 out of the keyways I52 and into the keyways I62, 01 the collar I55, and the shaft 16 rotated manually by the crank.
  • the apparatus further includes means for positively dislodging the severed particle from the cutting blades 54, 55. This means consists of a leaf spring I secured to the under side of the upper cutter arm 56 adjacent the outer edge thereof, see Figure 4.
  • the spring I65 terminates in proximity to the cutter blade 54 and is arranged to engage the severed particle I66 prior to the meeting of the cutting blades 54, 55, whereby at that time the spring blade I65 is under some tension and accordingly propels the severed piece I66 downwardly, passing through an opening I61 formed in the lower blade arm 51, and an opening I68 formed in the top plate 22 below the cutters.
  • the apparatus is arranged in proximity to the delivery of appendage moulds. These moulds are opened, the appendages removed, and the flash or seam removed from the appendages by an operator known as a seamer. This operator places the appendages in the carrier plates 46. The trimmed appendages are deposited upon the accumulating surface 28 where a supply is. available to the handler who,
  • a stop member arranged in predetermined fixed relation to said trimming cutters and being cooperable with each carrier as the same is presented at said station to limit the advance movement of the carrier, and means operable to yieldingly hold said carriers against said stop members.
  • Apparatus for trimming appendages for pottery ware including a frame, a conveyor comprising an endless series of carriers, an appendage receiving block mounted in each carrier, said blocks being adjustable lengthwise and transversely of said conveyor, and means cooperable to secure said blocks in adjusted position, a trimming station arranged in juxtaposition to said station.
  • Apparatus for trimming appendages for pottery ware comprising a frame, an elongated track structure mounted on the frame, a conveyor operable to intermittently advance a series of an: pendage carrying members along said track, a trimming station arranged in juxtaposition to said track, 'a pair of trimming cutters mounted at said station and being movable into nipping engagement to trim appendages carried by said to actuate said stop member into engagement with each carrier as the same arrives at said station, means operable to yieldingiy urge said carrier against said stop member and motion transmitting mechanism for operating said conveyor, stop member, and cutters, in timed relation.
  • Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of appendage carrying members along said upper run to and past a trimming station, and down wardly to said lower run, and to effect inversion.
  • cutter means mounted at said station and operable to trim the appendage carried by each of said carriers asthe same are successively presented at said station, means cooperable to retain said appendages in said carriers during said downward movement and inversion thereof, and being operable as each carrier approaches said horizontal run to release said appendages.
  • Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of ap- 0 said station, and means yieldingly engagingth portion of the appendage severed by said cutters during the trimming operation and, upon completion of said operation, discharging said severed portion from the cutters.
  • Apparatus for trimming appendages for pottery ware comprising cutter means operable to trim an appendage, an appendage holding fixtureoperable to support an appendage, in juxtaposition to said trimming cutters, means operable to effect initial advancement of said flxture'from trimming position through an are about a horipendage carrying members along said upper run to and past a trimming station, and downwardly to said lower run, and to effect inversion of said carriers during such downward movement, cutter means mounted at said station and operable to trim the appendage carried by each of said carriers as the same are successively presented at said station, an accumulating conveyor for accumulating trimmed appendages arranged in proximity to the lower run of said conveyor, means operable to retain said appendages in said carriers during the downward movement and inversion thereof, and being operable as the carriers approach said horizontal run to effect deposit of the trimmed appendages on said accumulating conveyor.
  • Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of appendage carrying members along said upper run to and past a trimming station and downwardly to said lower run, and to effect inversion of said carriers during such downward movement, cutter means mounted at said station and operable to trim the appendage carried by each of said carriers as the same are successively presented at said station, an appendage accumulating conveyor arranged in juxtaposition to the lower run of said first mentioned conveyor, means carried by the frame and cooperable to retain appendages in said conveyor during the initial downward movement thereof, and a second means cooperable to retain said appendages in said carriers during-the remainder of said downward movement and being movable out of appendage retaining relation as each carrier is moved in proximity to said accumulating conveyor.
  • Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor operable to intermittently advance an endless series of appendage carrying members to and past a trimming station, a pair of normally spaced apart trimming cutters. mounted at said station and being simultaneously movable into trimming engagement with appendages carried by said carriers as the same are successively advanced to zontal axis, and thereafter complete such advaneement to effect inversion of said fixture, a fixed member cooperable to hold the appendage in said fixture during such initial advancement, and a movable member cooperable to retain said appendage inthe fixture during said subsequent advancement thereof.
  • Apparatus for trimming appendages of pottery ware comprising a pair of normally spaced apart cutters mounted for movement about a common axis into and out of nipping relation, a conveyor including an endless series of appendage carrying members, means operable to cause said conveyor to successively move said carriers in juxtaposition to said cutters and position the appendages supported by said carriers; in position to be engaged by said cutters, a stop member arranged in predetermined relation to said cutters and being movable into engagement with each carrier as the same is moved into juxtaposition to the cutters, means yieldingly urging said carriers against said stop member, and actuatingmeans operable while each carrier is so posi tioned in relation to said cutters to eifect nipping engagement of the cutters.
  • Apparatus for automatically trimming appendages for pottery ware comprising a frame, a track extending along the frame, a trimming station arranged in juxtaposition to said track, a conveyor including an endless series of appendage carrying members arranged for sliding movement along said track, said conveyor being operable to intermittently advance said appendage carryingmembers along said track and present said carriers successively at said station, a pairof cutters arranged at said station and movable about a common axis into and out of nipp engagement, a stop member arranged in juxtaposition to said station and being movable into engagement with each carrier as the same is presented at said station and being operable when moved into engagement with a carrier to stop advancement thereof with the appendage supported by the carrier in position to be engaged by said cutters when the same are moved into nipping engagement, means yieldingly urging said carriers against said stop member, means mounted at said station and operable to yieldingly urge said carriers a predetermined distance transversely of said track, and motion transmitting mechanism operable to effect intermittentmovement of
  • Apparatus for trimming appendages for pottery war-e comprising a pair of normally spaced apart cutters, an appendage holding fixture operable to support an appendage with the terminal portion thereof in juxtaposition to said cutters, said cutters being movable in opposite directions into engagement with the terminal portion of the appendage supported by said fixture in nipping relation within the thickness of lngly clamp the appendage to the fixture euring said nipping engagement.

Description

APPARATUS FOR TRIuumc APPENDAGES FOR POTTERY'WARE Filed April 28. 1948 N. I. SEBELL June 26, 1951 5 Sheets-Sheet 1 INVENTOR. Noam 1521mm. {W M 6 I ATTORNEYS N. l. SEBELL June 26, 1951 APPARATUS FOR TRINIING APPENDAGES FOR POTTERY WARE 5 Sheets-Sheet 2 Filed April 28. 1948 ,mmvroa Noam 1-52am BY w 65 ii nrra /ws 7s ltr... l |||||||L| June 26, 1951 s g 2,558,318
APPARATUS FOR 'I'RIMIliNG APPENDAGES FOR POTTERY WARE Filed April 28, 1948 5 Sheets-sheaf. s
ILIII/I IIIIIIIIII III/III II 11/171 3 I 23 mmvm. Noam I- 522mm.
ayw w ATTORN EYS m m m w.
2,558,318 APPARATUS FOR 'mnmmc APPENDAGES FOR POTTERY WARE 5 Sheets-Sheet 4 NORMAN I- SEEIELL M1 3 W nrrommvs N. l 'SEBELL June 26, 1951 Filed April 2a, 1948 June 26, 1951 m- L 2,558,318
APPARATUS FOR TRIMIING APPENDAGES FOR POTTERY HARE Filed April 28, 1948 5 Sheets-Sheet 5 INVENTOR. NORMAN I- 5 1:51am.
"Maw
A T TORNE Ys Patented June 26, 1951 APPARATUS FOR TRJMMIN G APPENDAGES FOR POTTERY WARE Norman I. Sebcll, Brockton, Mass., assignor to Onondaga Pottery Company, Syracuse, N. Y., a corporation of New York Application April 28, 1948, Serial No. 23,797
11 Claims.
This invention has to do with a method for trimming appendages, such'as handles, lugs, etc.,
preparatory to their application to articles of pottery ware, and apparatus by which the method can be carried out and the appendages automatically trimmed. Appendages for articles of pottery ware are usually formed by being cast in a two-part mould formed with a plurality of concavities for simultaneously casting a number of handles, or other appendages, at a time. These concavities, in the mould are connected by a common runner or sprue, the arrangement being such that the liquid clay or material flows into each concavity at the side of the appendage to be attached to the article of ware. Accordingly, the individual handles after casting are broken away from the sprue, the'fiash or seam of thin day at the parting line of the two halves of the moulds is removed and then the side of the appendage broken from the sprue is cut, or trimmed, to provide a surface complemental to the surface of the article of ware to which the ;Machines have been suggested for performing this trimming operation as disclosed in Patents 2,361,312 and 2,413,540. Such machines have been either too complicated and costly, or required an additional amount of handwork making such machines impractical for use in manufacture. i
This invention has as an object a method by whic happendages for pottery ware can be trimmed to shape and size without chipping, breaking, or otherwise damaging the appendage.
This invention has .as a further object an apparatus operable to automatically trim the appendages with great accuracy and uniformity, and to deposit the trimmed appendages successively upon an accumulating table, or the like, where they are made available to the operator that applies the trimmed appendages to the articles of were known in the trade as ahandler.
The invention has as a further object apparatus of the type referred to embodying a structure operable to effect the trimming operation with efficiency and particularly, without chipping or otherwise damaging the appendage.
The invention consists in the novel method and features and in the combinations and constructions hereinafter set forth and claimed.
In describing this invention, reference is made to the accompanying drawings in which like characters designate corresponding parts in all the views.
Figure 1 is a top plan view of an apparatus embodying my invention.
Figure 2 is a side elevational view.
Figure 3 is a view taken on line 3-4, Figure 2.
Figure 4 is a view taken on line 4-4, Figure 1.
Figure 5 is an isometric view of one of the appendage carrying fixtures and contiguous portion of the conveyor.
Figure 6 is a view, corresponding to line 6l, Figure 4, with parts broken away and parts in section.
Figure 7 is an enlarged fragmentary elevational view of the conveyor indexing mechanism shown in the upper center portion of Figure 3. Figure 8 is a view taken on line 8-8, Figure 4. Figure 9 is a sectional view of the driving clutch structure.
Figure 10 is a side elevational view of the appendage retaining mechanism positioned at the upper end of its movement.
The apparatus is built in a suitable framework consisting of a rear pair ofvertical members 20, and a forward pair 2| extending upwardly from the floor and having secured to their upper ends a top plate 22, a pair of upper rails 23, and a pair of lower rails 24 extend forwardly from the legs 2| and are secured to a pair of vertical supporting members 25. The
upper rails 23 extend forwardly and have affixed. to their forward ends a shelf 26 supported by braces 21 carried by the legs 25. The shelf 26 is formed with an arcuate recess to receive a turn table support 28 on which the trimmed appendages are placed. The turn table 28 is mounted on a shaft 29 extending upwardly from a housing 30 containing a gear reduction and which is suitably mounted on the lower rails 24, Figure 2.
The appendages 32 are intermittently advanced to a trimming station by a conveyor mechanism including an endless series of appendage or carrying members, or fixtures. A pair of bearing block-s 33 are secured to the under side of the top plate 22 in proximity to the rear edge thereof, and a similar pair 84 are mounted 3 on the plate adjacent the forward edge thereof. A shaft 35 is Journalled in the bearing blocks 33 and carries a sprocket 35. A shaft 31 is journalled in the forward bearings 34 and carries a' sprocket 3'8. A chain 39 is trained over these sprockets and has secured to it at uniform spaced intervals blocks 40. The rear portion of the top plate 22" is recessed as at 4| to permit the blocks 40 to move upwardly about the sprocket 36, and the forward portion of the topplate 22 is recessed from its forward edge inwardly to permit the fixture blocks 40 to move downwardly about the sprocket 38, the recess terminating at 42, see Figure 6. Guide rails 43 are secured in spaced apart relation to the top of the plate 22 and form a track along which the blocks 40 are moved by the upper run of the chain 39. The blocks 40 are formed with depending flanges 45 which cooperate with the rails 43 to accurately guide the blocks during their movement on the rails. The blocks 40 form the base portion of the appendage carrying members.
The blocks 40 are formed on their upper surfaces with a recess extending to the inner side edges of the blocks, and plates 46 are positioned in these recesses and are adjustable both-lengthwise and transversely of the conveyor chain. The
plates are secured in the recesses by clamp bars 41 and screws 48.
Each plate 46 is formed with a recess in the 30 top surface thereof adjacent .the inner edge of the plate. This recess is of such shape and form as to receive the plastic clay appendage. In the drawings, these recesses 50 are of general ear formation to receive cup handles with the inner edge portion of the handle projecting inwardly beyond the inner edge of the plates 46. It will be understood that the plates 46 are properly recessed to receive the appendage to be trimmed.
such as handles, lugs, decorating knobs, etc.
The appendages are placed in the plates 46 at station A, Figure 1. The carriers are intermittently advanced to. station B where the appendages are trimmed. The carriers are then advanced forwardly and downwardly around the forward sprocket 38, and the trimmed appendages are deposited on the turn table 28, as indicated in Figure l, the edges v52 having been trimmed to proper shape and contour at the trimming sta tion B.
The appendages 32 are trimmed by a pair of cutters which are normally maintained in spaced apart relation and which are moved together as each appendage is presented at the station B. These cutters consist of blades 54, 55, mounted on like ends of arms '55, 51, respectively. These arms are journalled at their opposite ends on a. pivot pin 60 carried in a bracket 6| mounted on the top plate 22. The blades are detachably secured to thefree ends of the arms by being clamped thereto as by clamp bars 63 and screws i4 threading into the arms. The outer end edges of the arms 56, 51, are curved or formed to give the blades 54, 55, the desired shape to trim the appendages to the'proper contour lengthwise or axially of the appendages. The distance the blades are positioned from the pivot pin 50 determines the transverse arcuate contour of the contour of the piece of ware relative to its vertical axis. This, of course, is usually not on a uniform radius unless the piece of ware happens to be of spherical formation. For example, on
a tea-cup, the appendage might not be trimmed on a uniform curvature, but might include two or more curvatures. This situation is taken care or by proper formation of the cutting blades 54, 55, which can be conveniently done by properly l0 contouring the ends of the arms 56, 51, to which the thin steel blades are attached, as described.
Heretofore, appendages have been trimmed by the use of a single blade. In my apparatus, I
employ the pair of blades 54, 55, and obtain certain advantages thereby. For example, with the single blade the edge of the appendage into which the blade enters is formed with a sharp and proper contour, but the side of the appendage from which the blade leaves is often chipped,
0 orfof ragged formation. With my arrangement,
the blades enter opposite side edges of the ap pendage and meet in biting or nipping engagement at approximately the center of the appendage, whereby both of the outer edges are of sharp and proper formation.
- The apparatus herein described-will function properly without any additional means of holding the appendages in the plates 46. However, entirely perfect trimming of all forms of appendages is accomplished by applying a slight pressure on the appendage during the trimming operation. a
In the structure disclosed, a bracket 65 is hinged at one end to the top plate 22, as at 55.
The free end of the bracket overlaps the upper blade arm 58, see Figures 3and 4. A weight 81 is secured to the bracket adjacent the free end thereof, and a yieldable pad 68 of felt, or like material, is secured to the under side of the weight. The arrangement is such that when the cutters are in open position, as shown in Figure 3, the pad 68 is elevated above the path traveled bythe appendages. However, when the cutters are moved toward the appendage, the weighted pad engages the appendage, exerting a slight pressure to hold the same in the recess during the trimming operation, see Figure 4.
The machine includes motion transmitting mechanism for intermittently advancing the car- 50 riers 40 and operating the trimming cutters in timed relation. A shaft I0 is journalled in bearing brackets II also depending from the under side of the top plate 22. This shaft has secured to it a disk 15, the periphery of which is formed with a cam lobe 16. A crank pin I8 is mounted for rotation'in the disk and is formed with a head I9 in which a tubular member 80 is clamped, as by screw 8|.
The end of the tube is provided with a shoulder 83, for further assurance that the tube will not move in the head member 18 during that portion of the cycle of operation wherein force is transmitted from the shaft 10 to the member 8|]. The opposite end of the member 80 is provided with a plug 84 apertured to slidably receive a rod 85, the inner end of which is formed with an enlarged head portion 86. A helical compression spring 81 encircles the rod and is interposed between the plug 84 and the head 86, thereby urging the rod inwardly. The outer end of the ranged to successively engage notches 9| formed on a ratchet wheel 02 which is secured to 'the shaft 81. Accordingly, upon rotation of the shaft ing flange 48 of the block engaging the oute face of the adjacent guide rail 48, see Figure 4.
in a counterclockwise direction, Figure 6, the
sprocket wheels 88, 88, are intermittently rotated in the same direction and the appendage carriers 40 are intermittently advanced irom right to left, Figures 2 and 6,. whereby the appendages are advanced from the loading station A to the trimming station B, Figure l, and the trimmed appendages deposited upon the accumulating table 28.
The apparatus includes means operable to accurately position the appendages at the trimming station B, whereby all of the appendages will be accurately and uniformly trimmed. As previously explained, the fixture plates 48 are adjustable in the individual carrying blocks 40 both lengthwise and transversely of the conveyor chain. As the blocks 40 advance to the trimming station, a stop member is moved into the path of movement of the carriers 80. This member is fixed in the frame relative to the trimming cutters, and the apparatus further includes provision for yieldingly maintaining the carrier against the stop member during the trimming operation. In this manner, each carrier is accurately positioned lengthwise of the conveyor chain during the trimming operation. This stop member consists of an arm 88 pivoted at one end to a bracket 89 depending from the top plate 22. The opposite end of the arm is formed with an upwardly extending portion I00 having a face IOI against which the carriers abut. The arm 98 is urged downwardly by a compression spring I02 interposed between the arm and the top plate 22, see Figure 6, and the arm is provided with a roller I08 riding upon the periphery of the This arrangementaecurafeiy positions the appendage from the pivot'pin 80 of the cutter carrying arms 88, 81. This arrangement avoids the necessity of initially constructing the machine with precision and effects accurately positioning of the appendage carriers regardless of wear of the parts incident to the operation of the machine.
' The shaft 10 is also provided with a cam II8 which is eflective to move the cutting blades to open position, as shown in Figure 3. An actuating arm H8 is pivotally mounted intermediate its ends to a bracket II1 depending from the under side of the top plate 22, see Figure 8. An adjustable link H8 is pivotaliy connected to one end of the arm and extends upwardly through an aperture in the top plate, and is connected to the lower cutter arm 81 by a pin II8.
An adjustable linkage I20 is connected to the arm II8 on the opposite side of its pivot III,
and this linkage also extends through the top plate and is connected to the upper cutter arm 88, as by cap screw I22. The rear end portion of the arm II8, to which the linkage I20 is connected, is urged downwardly by a helical compression spring I28 interposed between the arm crank disk 15. As previously stated, the forward end of the top plate 22 is recessed to a depth indicated at 42, this recess permitting the carriers to travel downwardly about the forward sprocket 88, and also providing for the upward movement of the portion I00 of the stop arm 88. When the lobe 18 of the cam 15 engages the roller I08, the arm 88 is moved upwardly, moving the upwardly extending end portion of the arm through the top plate 22 between the guide rails 43 and into the path of movement of the carrier blocks as each block is advanced in juxtaposition to the cutter blades 54, 55.
The arrangement of the cam lobe 18 relative to th crank pin 18 is such that the stop arm 98 is elevated into carrier stopping position prior to the end of the indexing movement of the Provision is also made to accurately locate the carriers 40 in a direction transversely of the conveyor chain. A block I08 is secured to the top plate 22, as by screws I08. This block is formed with spaced apertures to receive guide pins carried by a shoe I I0. The block is recessed intermediate the guide pins to receive a compression spring III urging the shoe inwardly toward the conveyor. A screw II2 serves as a stop for this inward movement of the shoe. The leading end of the shoe is chamfered, and is engaged by the outer side edge of each of the carrier blocks 40 as it is advanced in juxtaposition to the cutting knives, and the block is moved inwardly toward the knives with the outer dependand the top plate 22, see Figure 8. This portion of the arm is also provided with a cam roller I25ridin'g upon. the periphery of the cam III, see Figures 4 and 8. The cam I I5 is formed with alow portion which permits the spring I28 to r plained.
The carriers 40 are advanced downwardly about the forward conveyor sprocket 88 in a two-step movement. In the initial step or portion of this movement, the carriers are moved from horizontal position to vertical position, as shown in Figure 2. During the subsequent portion of their advancement, the carriers are moved from the vertical position to the inverted position in proximity to the accumulating table 28.
During these movements of the carriers. means is provided to retain the trimmed appendage in the carriers until the carriers have reached the inverted position with the appendage in close proximity to the accumulating table.
During the initial downward movement of the carriers about the sprocket 88, the appendages are retained in plates 46 by an arm I depending from a bracket I8I secured to the: forward edge of the top plate 22. This arm I80 isformed of thin spring material and yieldingly engages the appendage with a slight pressure suiilcient to retain the appendage in the recess 80 of the carrier, see Figure 2.
As previously explained, during the dwell of the conveyor. the ratchet arm 88 is being moved forwardly. This arm'hassecured to it on the pivot bolt 88 a second arm I84 extending forwardly and formed with an elongated slot I85. An arm I88 is journalled on the shaft 81 and is provided with a stud I81 movable in. the slot] veyor, the arm I36 is being rotated upwardly in a clockwise direction, Figure 6. A blade I36 is pivotally mounted on the outer end of the arm I36 and is urged toward an adjustable stop screw I39 by a torsion spring I48. When the arms 89, I34 have been moved forwardly their full stroke, the arm I36 assumes the position shown in Figure 10 with the blade I38 contacting the lower edge of the spring arm I36. At this time, the stud I31 is in the lower end of the slot I35 in the arm I34. Upon further rotation of the crank disk 15, the vertically positioned carrier is moved downwardly, and the arm I36 with the retaining blade I38 moves downwardly by gravity in unison with the movement of the carrier, the blade I38 yieldingly engaging the see Figure 2. Upon forward movement of the connecting rod and arms 89, I34, the blade I38 will be moved upwardly while the conveyor is dwelling. When the blade I38 is moved upwardly out of engagement with the appendage, the same is deposited by gravity-onto the table top. However, due to the close proximity of the appendage to the table top, the same is not damaged.
The apparatus is operated by a motor I42 mounted on the housing of a gear reduction I43 which, in turn, is supported by brackets I44 and braces I45 extending rearwardly from the forward legs 2I. The output shaft of this power unit is .provided with a pair of sprockets I46, I41. -A driving chain I48 is trained over the sprocket I46 and a sprocket I49 journalled on the shaft,16. A chain I50 is trained over the sprocket I41 and over a sprocket I5I on the gearreduction 38 to effect rotation of the turntable 28 at slow speed. The bore of the sprocket I49, Figure 9, is formed onopposite sides with keyways I52. The shaft 10 is slotted, as at I53, to receive a flat key I54, the ends of which project into the keyways I52. A collar I is fixedly secured to the shaft 10 in proximity to the sprocket I49, the sprocket and the collar being arranged on the shaft intermediate the bearings H and by which the sprocket and collar are restrained against axial movement.
The outer end portionof the shaft 10 is bored to slidably receive a rod I58 slotted near its inner end to receive the key I54. A compression spring I6I is arranged in the bottom of the bore and yieldingly urges the rod and key to the left, Figure 9, so that the ends of the key move into the keyways I52 of the sprocket. The collar I 55 is formed with similar keyways I62. Normally, the ends of the key I54 are positioned in the keyways in the sprocket by action of the spring I6I. The outer end of the rod I58 is formed with a square portion I63, or otherwise formed to take a crank. If it is desired to op- .erate the machine manually, as for example during the initial adjustment of the appendage carriers, or the plates 46, the crank may be applied to the end of the rod I58 and the rod pushed inwardly, moving the key I54 out of the keyways I52 and into the keyways I62, 01 the collar I55, and the shaft 16 rotated manually by the crank. The apparatus further includes means for positively dislodging the severed particle from the cutting blades 54, 55. This means consists of a leaf spring I secured to the under side of the upper cutter arm 56 adjacent the outer edge thereof, see Figure 4. The spring I65 terminates in proximity to the cutter blade 54 and is arranged to engage the severed particle I66 prior to the meeting of the cutting blades 54, 55, whereby at that time the spring blade I65 is under some tension and accordingly propels the severed piece I66 downwardly, passing through an opening I61 formed in the lower blade arm 51, and an opening I68 formed in the top plate 22 below the cutters.
. In operation, the apparatus is arranged in proximity to the delivery of appendage moulds. These moulds are opened, the appendages removed, and the flash or seam removed from the appendages by an operator known as a seamer. This operator places the appendages in the carrier plates 46. The trimmed appendages are deposited upon the accumulating surface 28 where a supply is. available to the handler who,
trimming engagement with appendages carried by said carrying members, a stop member arranged in predetermined fixed relation to said trimming cutters and being cooperable with each carrier as the same is presented at said station to limit the advance movement of the carrier, and means operable to yieldingly hold said carriers against said stop members.
2. Apparatus for trimming appendages for pottery ware including a frame, a conveyor comprising an endless series of carriers, an appendage receiving block mounted in each carrier, said blocks being adjustable lengthwise and transversely of said conveyor, and means cooperable to secure said blocks in adjusted position, a trimming station arranged in juxtaposition to said station.
3. Apparatus for trimming appendages for pottery ware comprising a frame, an elongated track structure mounted on the frame, a conveyor operable to intermittently advance a series of an: pendage carrying members along said track, a trimming station arranged in juxtaposition to said track, 'a pair of trimming cutters mounted at said station and being movable into nipping engagement to trim appendages carried by said to actuate said stop member into engagement with each carrier as the same arrives at said station, means operable to yieldingiy urge said carrier against said stop member and motion transmitting mechanism for operating said conveyor, stop member, and cutters, in timed relation.
4. Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of appendage carrying members along said upper run to and past a trimming station, and down wardly to said lower run, and to effect inversion.
of said carriers during such downward movement, cutter means mounted at said station and operable to trim the appendage carried by each of said carriers asthe same are successively presented at said station, means cooperable to retain said appendages in said carriers during said downward movement and inversion thereof, and being operable as each carrier approaches said horizontal run to release said appendages.
5. Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of ap- 0 said station, and means yieldingly engagingth portion of the appendage severed by said cutters during the trimming operation and, upon completion of said operation, discharging said severed portion from the cutters.
8. Apparatus for trimming appendages for pottery ware comprising cutter means operable to trim an appendage, an appendage holding fixtureoperable to support an appendage, in juxtaposition to said trimming cutters, means operable to effect initial advancement of said flxture'from trimming position through an are about a horipendage carrying members along said upper run to and past a trimming station, and downwardly to said lower run, and to effect inversion of said carriers during such downward movement, cutter means mounted at said station and operable to trim the appendage carried by each of said carriers as the same are successively presented at said station, an accumulating conveyor for accumulating trimmed appendages arranged in proximity to the lower run of said conveyor, means operable to retain said appendages in said carriers during the downward movement and inversion thereof, and being operable as the carriers approach said horizontal run to effect deposit of the trimmed appendages on said accumulating conveyor.
6. Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor having an upper and lower horizontal run and being operable to intermittently advance a series of appendage carrying members along said upper run to and past a trimming station and downwardly to said lower run, and to effect inversion of said carriers during such downward movement, cutter means mounted at said station and operable to trim the appendage carried by each of said carriers as the same are successively presented at said station, an appendage accumulating conveyor arranged in juxtaposition to the lower run of said first mentioned conveyor, means carried by the frame and cooperable to retain appendages in said conveyor during the initial downward movement thereof, and a second means cooperable to retain said appendages in said carriers during-the remainder of said downward movement and being movable out of appendage retaining relation as each carrier is moved in proximity to said accumulating conveyor.
'7. Apparatus for trimming appendages for pottery ware comprising a frame, a conveyor operable to intermittently advance an endless series of appendage carrying members to and past a trimming station, a pair of normally spaced apart trimming cutters. mounted at said station and being simultaneously movable into trimming engagement with appendages carried by said carriers as the same are successively advanced to zontal axis, and thereafter complete such advaneement to effect inversion of said fixture, a fixed member cooperable to hold the appendage in said fixture during such initial advancement, and a movable member cooperable to retain said appendage inthe fixture during said subsequent advancement thereof. 9. Apparatus for trimming appendages of pottery ware comprising a pair of normally spaced apart cutters mounted for movement about a common axis into and out of nipping relation, a conveyor including an endless series of appendage carrying members, means operable to cause said conveyor to successively move said carriers in juxtaposition to said cutters and position the appendages supported by said carriers; in position to be engaged by said cutters, a stop member arranged in predetermined relation to said cutters and being movable into engagement with each carrier as the same is moved into juxtaposition to the cutters, means yieldingly urging said carriers against said stop member, and actuatingmeans operable while each carrier is so posi tioned in relation to said cutters to eifect nipping engagement of the cutters.
10. Apparatus for automatically trimming appendages for pottery ware comprising a frame, a track extending along the frame, a trimming station arranged in juxtaposition to said track, a conveyor including an endless series of appendage carrying members arranged for sliding movement along said track, said conveyor being operable to intermittently advance said appendage carryingmembers along said track and present said carriers successively at said station, a pairof cutters arranged at said station and movable about a common axis into and out of nipp engagement, a stop member arranged in juxtaposition to said station and being movable into engagement with each carrier as the same is presented at said station and being operable when moved into engagement with a carrier to stop advancement thereof with the appendage supported by the carrier in position to be engaged by said cutters when the same are moved into nipping engagement, means yieldingly urging said carriers against said stop member, means mounted at said station and operable to yieldingly urge said carriers a predetermined distance transversely of said track, and motion transmitting mechanism operable to effect intermittentmovement of said conveyor, cutter means and stop member in timed relation.
11. Apparatus for trimming appendages for pottery war-e comprising a pair of normally spaced apart cutters, an appendage holding fixture operable to support an appendage with the terminal portion thereof in juxtaposition to said cutters, said cutters being movable in opposite directions into engagement with the terminal portion of the appendage supported by said fixture in nipping relation within the thickness of lngly clamp the appendage to the fixture euring said nipping engagement.
' NORMAN I. SEBELL.
Number Name Date '10 Prlchard Sept. 13, 1904 12 Name 4 Date Quiun' May 16, 1905 Roth Jan. 23, 1912 Desautels Mar. 7, 1933 Zalewskl et a1 Feb. 2, 1943 Miller Oct. 24, 1944 Bloore Dec. 31, 1946
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827681A (en) * 1953-09-16 1958-03-25 Strasser Hans Machines for trimming ceramic appendages
US2978778A (en) * 1956-09-20 1961-04-11 Strasser Hans Machines for trimming appendages or articles
US3039163A (en) * 1957-06-05 1962-06-19 Taylor Smith & Taylor Company Handle cutting machine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US769917A (en) * 1904-06-20 1904-09-13 Garrett O Driscoll Shearing-machine.
US790076A (en) * 1904-02-23 1905-05-16 Garrett O Driscoll Shearing device for glass-forming machines.
US1015588A (en) * 1910-11-07 1912-01-23 Johannes Roth Automatic tile-machine.
US1900434A (en) * 1929-04-15 1933-03-07 Fisk Rubber Co Cutter for extruding machines
US2309726A (en) * 1939-03-28 1943-02-02 Onondaga Pottery Company Trimming mechanism
US2361311A (en) * 1941-02-05 1944-10-24 William J Miller Method and apparatus for manufacturing pottery appendages
US2413540A (en) * 1943-12-01 1946-12-31 Swinnertons Ltd Apparatus for trimming handles and the like for pottery goods

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US790076A (en) * 1904-02-23 1905-05-16 Garrett O Driscoll Shearing device for glass-forming machines.
US769917A (en) * 1904-06-20 1904-09-13 Garrett O Driscoll Shearing-machine.
US1015588A (en) * 1910-11-07 1912-01-23 Johannes Roth Automatic tile-machine.
US1900434A (en) * 1929-04-15 1933-03-07 Fisk Rubber Co Cutter for extruding machines
US2309726A (en) * 1939-03-28 1943-02-02 Onondaga Pottery Company Trimming mechanism
US2361311A (en) * 1941-02-05 1944-10-24 William J Miller Method and apparatus for manufacturing pottery appendages
US2413540A (en) * 1943-12-01 1946-12-31 Swinnertons Ltd Apparatus for trimming handles and the like for pottery goods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827681A (en) * 1953-09-16 1958-03-25 Strasser Hans Machines for trimming ceramic appendages
US2978778A (en) * 1956-09-20 1961-04-11 Strasser Hans Machines for trimming appendages or articles
US3039163A (en) * 1957-06-05 1962-06-19 Taylor Smith & Taylor Company Handle cutting machine

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