A molding machine including a plurality of carriages for carrying mold blocks in an axial direction. The carriages each include wheels on opposite sides which follow a guide track along an endless path including a molding section extending in the axial direction. Two wings are secured to the carriages for pivoting about an axis extending in the axial direction whereby in one pivotal position the mold blocks are together in a molding position and in another pivotal position the mold blocks are separated in a releasing position. Each of the wings is adapted to carry one of the mold blocks and has a flat axially extending surface and guide wheels. A wing guide track engages the wing guide wheels and is adapted to place the wings in the molding position when the carriage is in the molding section. A first set of track rollers along the molding section engages the flat axially extending surface of one of the wings of carriages in the molding section along a first rolling plane extending in the axial direction. A second set of track rollers along the molding section engages the flat axially extending surface of the other of the wings of carriages in the molding section along a second rolling plane extending in the axial direction.
A portable device for cutting stand grooves in the trunk of a cut tree, including a frame, a pair of wheels rotatably secured to one end of the frame, and a hitch fixed to the other end of the frame. A support at the frame one end includes a first trunk support with two support surfaces downwardly tapered together to an intersection to define a notch therebetween for supporting a cut end of a cut tree trunk and a cutting element for cutting stand grooves in a trunk of a supported tree. A horizontal track on the frame extends toward and away from the frame one end support. An upright support member is selectively movable along a track on the frame toward and away from the first trunk support, and secures a second trunk support above the frame for supporting another portion of a cut tree trunk spaced from the cut tree trunk cut end.
Heinrich Dickhut - Charleston TN John S. Berns - Cleveland TN
Assignee:
Cullom Machine Tool & Die, Inc. - Cleveland TN
International Classification:
B29C 4938
US Classification:
425233
Abstract:
A corrugated mold block for a vacuum machine for molding corrugated tubes is formed of a plurality of sub-blocks rigidly secured end to end. Each sub-block has an arcuate face which is corrugated with not more than one complete wavelength of circumferential grooves and lands, and two longitudinally spaced end surfaces. A vacuum channel is provided about one of the end surfaces of each sub-block, and openings in each sub-block connect the channel and the face. When the sub-blocks are secured together into a mold block (and when mold blocks abut during molding), the vacuum channels and openings together define vacuum passages for each of the corrugation grooves, which passages are all connected to a vacuum source for drawing a vacuum during molding.
Heinrich Dickhut - Charleston TN John S. Berns - Cleveland TN
Assignee:
Cullim Machine Tool & Die, Inc. - Cleveland TN
International Classification:
B29C 4934
US Classification:
425522
Abstract:
A corrugated mold block for a vacuum mold machine is provided with a face arcuate about a longitudinal axis and corrugated in the longitudinal direction with alternating grooves and lands, said face being formed of sheet metal. A housing is provided about the back of the face and adapted for carriage about an endless path, and reinforcing members are provided which are secured to the face and housing and extend therebetween to maintain the desired shape of the face. Openings extend through the grooves of the face to the back thereof and communicate with vacuum passageways formed by a plurality of arcuate channel members secured to the back of each of the face grooves and communicating with a vacuum port through the housing. The housing further defines a cooling passage therethrough in communication with input and output cooling ports through the housing. The reinforcing members are disposed substantially radial to the arc of the face and include finger portions extending into the lands thereof and openings therethrough which form a part of the cooling passage.
John S. Berns - Cleveland TN Heinrich Dickhut - Charleston TN
Assignee:
Cullom Machine Tool & Die, Inc. - Cleveland TN
International Classification:
B29C 4790 B29C 5330
US Classification:
4253261
Abstract:
A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port. Cooling water channels about sub-block end surfaces connect to water inlet and discharge ports for selectively circulating cooling water through the blocks, The mold block ports communicate with respective vacuum, water supply, and water discharge channels in a longitudinal supply tray along which the mold blocks travel through the molding section. A mold train drive engages a selected number of carriages at the beginning of the mold tunnel to continuously drive the carriages along the mold tunnel.
Vacuum Mold Blocks With Cooling For Corrugated Tubing
John S. Berns - Cleveland TN Heinrich Dickhut - Charleston TN
Assignee:
Cullom Machine Tool & Die, Inc. - Cleveland TN
International Classification:
B29C 3336 B29C 4938
US Classification:
425193
Abstract:
A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section. Each mold block is a plurality of sub-blocks secured end to end, with each sub-block having an arcuate face and corrugated with not more than one complete wavelength. Vacuum channels about sub-block end surfaces connect the block face to a vacuum port. Cooling water channels about sub-block end surfaces connect to water inlet and discharge ports for selectively circulating cooling water through the blocks. The mold block ports communicate with respective vacuum, water supply, and water discharge channels in a longitudinal supply tray along which the mold blocks travel through the molding section.
John S. Berns - Cleveland TN Heinrich Dickhut - Charleston TN
Assignee:
Cullom Machine Tool & Die, Inc. - Cleveland TN
International Classification:
B29C 4790 B29C 5330
US Classification:
425233
Abstract:
A machine for making plastic tubing including a plurality of separate carriages for carrying mold blocks about the continuous path. First and second wheel pairs on opposite sides of each carriage ride on first and second tracks respectively through a molding section of the path. An offset wheel is disposed between the wheels of each pair and rides on guide tracks associated with and facing oppositely to the first and second tracks respectively through the molding section.
A manually manipulatable flexible toy includes an elongated tube unitarily fabricated of semi-rigid material such as plastic. The tube forms bellows which, in turn, define a plurality of larger diameter rings and a plurality of smaller diameter rings joined in an alternating array lengthwise of the tube by frusto-conical walls. The tube or any portion thereof is extendable and retractable and manipulatable into various curvilinear configurations, with the tube maintaining its last chosen extended or retracted or curvilinear condition. A pair of the frusto-conical walls diverge radially inwardly from any given larger diameter ring to an adjacent pair of smaller diameter rings when the tube is in the extended condition. A pair of the frusto-conical walls extend radially inwardly offset to one side of any given larger diameter ring when the tube is in the retracted condition. The tube is of a length sufficient to be curved into a closed configuration such as a circle and the like.