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4269580 |
Compression molding press with hydraulic controls
Predominately hydraulic controls with an optional electrical feedback loop for a compression molding press is provided for a press having the main force provided by four hydraulic cylinders one at...
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4260349 |
Reciprocating pellet press
A machine for pressing loose powder into pellets using a series of reciprocating motions has an interchangeable punch and die as its only accurately machines parts. The machine reciprocates...
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4253814 |
Packerhead and core control system
A concrete pipe making machine having a packerhead vibrating core and a control for automatically controlling the movement of the packerhead and core relative to each other as the packerhead and...
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4252514 |
Apparatus for stereo relief modeling
A stereo relief modelling apparatus based on photogrammetric method and apparatus comprising a flexible platen, used with standard stereo plotting instrumentation such as double-projection...
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4240778 |
System for providing for parallelism in fluid powered press or the like
A fluid powered compression molding press or the like in which members such as platen members are movable relatively toward one another to develop high pressures therebetween, such as for instance...
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4239474 |
Apparatus for molding a plastic pipe
A lower mold half is horizontally placed. The top surface of the lower mold half is provided with a first groove of any desired shape, one end of which is closed with the other end having a notch...
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4238177 |
Molding machine with vibration isolation
A concrete block molding machine has the pallet support table mounted on the main frame of the machine through pneumatic tires which provide vibration isolation between the pallet support table and...
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4233009 |
Apparatus for separation of waste material from a moulded article
A method of and apparatus for separating off waste material from a moulded article in the production of hollow articles of thermoplastics material by a blowing process in a multi-part mould...
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4230442 |
Mold-clamping mechanism for injection-molding machine
A thrust member on column secured to a movable platen of an injection-molding machine, surrounded by a mounting frame with laterally withdrawable shutters which enter behind the thrust member in...
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4224561 |
Method and apparatus for regulating the speed of a conveyor
An improved regulator is provided for varying the rotational speed of a screw conveyor arranged to supply material to a variable-volume chamber having a piston slidably mounted in a cylinder. The...
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4193167 |
Apparatus for molding meat patties
An improved molding apparatus is provided for forming patties from an agglomerable edible material, particularly meat in frozen flake cut form. The apparatus includes a rotating turret with a...
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4187065 |
Blow molding machine
Means for controlling the action of a blow molding machine of the type having a continuously extruding parison. The control means includes a photocell signal circuit responsive to extrusion of each...
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4185952 |
Moulding machines
An injection molding machine has a fixed and a tool portion, a shroud mounted for sliding movement around and in sealing relation to one of said portions towards and into sealing engagement with...
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4184827 |
Apparatus for monitoring and controlling the operation of a dual platen press
Apparatus for monitoring and controlling the operation of a dual platen press used in the manufacture of nuclear fuel pellets is disclosed. The apparatus includes means for indicating the...
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4177725 |
Method of and apparatus for rectifying distortion in an endless pressing band
In apparatus having an endless pressing band, formed of a layer of rubber with a steel-wire fabric connected thereto, passing around a heating drum, two associated guide rollers and a hitch roller,...
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4178144 |
Molding conveyor drive
In a molding apparatus employing opposed endless belt conveyors to mold a non-rigid material into a rigid material, the problem of one conveyor being driven at a slightly greater speed than the...
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4159293 |
Method and apparatus for controlling parison dimensions
A parison length controller for molding parisons having a predetermined length and a uniform wall thickness distribution over the whole length. A parison lower edge detector is provided for...
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4150080 |
Method for separation of waste material from a moulded article
A method of and apparatus for separating off waste material from a moulded article in the production of hollow articles of thermoplastics material by a blowing process in a multi-part mould...
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4131596 |
Sensing system and method for plastic injection molding
An apparatus and method for providing a signal that measures the extent of the separation of injection mold dies during the injection of plastic material into the mold cavity and uses this signal...
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4088432 |
Mold lockup mechanism
An injection molding machine has two stationary platens interconnected by tie bars and an immediate third platen which is movable on the tie bars. Separable mold portions are mounted respectively...
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4063859 |
Apparatus for producing shaped concrete products
Fluid concrete is provided to apparatus which shapes the concrete into a desired form and may stack the finished products for removal by an operator. A concrete receiving portion of the apparatus...
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4038004 |
Measurement apparatus for determining the degree of filling of a casting mold
A measurement apparatus for use with a molding machine comprising an electrical measurement value transmitter responsive to distance variations for determining the degree of filling of a casting...
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4035118 |
Self-centering matrices for retreading molds
This disclosure relates to a retreading mold which includes a pair of relatively movable platens, means for supporting the platens during relative movement therebetween, means for imparting...
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4017235 |
Apparatus for avoiding an excess of pressure in a continuous press
A safety device for avoiding excess pressure in a continuous press of the type having two rotatively driven endless conveyor belts forming opposed, substantially linear spans defining a press zone...
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4017236 |
Mold-clamping mechanism for injection-molding machine
A clamping mechanism, effective to press a movable platen against a fixed platen in a terminal phase of a mold-closing stroke of an injection-molding machine, comprises a series of coaxial annular...
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4014634 |
Powder molding press
A powder molding press, for compression-molding a raw powder between a pair of metal molds coupled to a pair of metal mold securing devices. At a preset spacing, the movement of the metal mold...
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4012186 |
Panel forming device
Disclosed is a device for making panels, such as wall panels, particularly of the type having metallic skins with a foam insulation therebetween. A movable carriage supports temperature controlled...
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3994648 |
Endless conveyor spacing control for continuous molding
Preferably for use in the production of continuous lengths of rigid foam, a molding machine employs opposed endless conveyor belts having adjacent linear runs forming therebetween a molding zone....
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3990827 |
Apparatus for making corrugated plastic pipe with integral coupler collars
Apparatus for continuously making corrugated plastic pipes having enlarged coupler collars on one end thereof by continuously extruding a tube of plastic material into a molding zone especially...
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3989432 |
Means for slumping cement blocks
During stripping of a cement block from a mold in a cement block forming machine by shoes of a stripper head, the head is driven by gravity and its distance from a pallet receiver structure,...
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3988092 |
Apparatus for making retractile cords
A plurality of groups of mandrels are arranged for movement successively through a plurality of workstations with each group being worked on at a station while other groups are being worked on...
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3970418 |
Apparatus improvements for controlling parison length
In apparatus for controlling the length of parison portions available for blow molding which includes a carrier supporting a plurality of blow molds, a drive train for the carrier to consecutively...
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3969061 |
Concrete press with mold clamping means
A concrete press has an upper movable platen and a lower fixed platen. Hydraulic cylinders are interposed between the upper platen and frames of the press which extend horizontally over this...
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3966378 |
Apparatus for making oriented hollow plastic articles
Method and apparatus for the preparation of oriented hollow objects of moldable organic plastic material by providing a parison on a first blow core, expanding said parison into an intermediate...
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3963404 |
Method and apparatus for multiple blow molding with rotary turntable
A method and apparatus are provided for multiple simultaneous blow molding operations for forming hollow objects such as containers, the method and apparatus employing at least two...
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3954369 |
Apparatus for making a liquid container from thermoplastic synthetic material
A closed liquid container of thermoplastic synthetic-resin material is fod by blowing and comprises at least one construction element disposed within the container and secured to the wall thereof...
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3951578 |
Apparatus for automatically adjusting center-height of a mold and the like used for manufacturing concrete pipes
This invention relates to an apparatus for automatically adjusting the center-height of a mold and the like which are used for manufacturing concrete pipes characterized in comprising a supporting...
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3943214 |
Method improvements for controlling parison length
Method for controlling the length of parison portions available for blow molding which includes use of a carrier supporting a plurality of blow molds, a drive train for the carrier to consecutively...
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3942431 |
Press having travelling die set
A press comprising a base, a lower bolster mounted on the press, an upper bolster mounted on the press for movement with respect to the lower bolster, power means for moving the upper bolster...
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3940465 |
Method for regulating the hardening time of a plastic mass in the mold of an injection molding machine
A method of regulating the hardening or setting time of a plastic mass in a mold of an injection molding machine, wherein during a relative movement between two mold halves in the presence of the...
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3923439 |
System for controlling the eccentricity of an extruded article
A cable core is advanced longitudinally through an extruder head where a protective tubular plastic jacket is formed therearound. A sensing device coupled to a test set monitors jacket eccentricity...
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3909169 |
Injection moulding apparatus
Injection moulding apparatus has a mould defined by two or more opposed mould members, means for moving said mould members towards each other, two injection units and a valve to connect one unit or...
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3901635 |
Control system for briquetters
The present disclosure pertains to an apparatus and control system for machines employed for briquetting chemicals, minerals, mining and metallurgical materials. The system includes a piston...
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3894824 |
Hydraulic control for plastic injection molding machine
An hydraulic control system for a reciprocating screw-type plastic injection molding machine providing for flow rate and pressure control of hydraulic fluid used in opening and closing the mold...
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3885899 |
Apparatus for expanding a laminating interlayer
An apparatus for expanding a laminating interlayer is taught. The apparatus includes structure for feeding a heated web of laminating interlayer material to a conical member. A stretching of the...
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3881852 |
MEANS FOR MAINTAINING SPACING IN A CONTINUOUS PRESS
An improved apparatus for maintaining constant spacing in a continuous press of the type which has two rotatively driven endless conveyor belts forming opposed, substantially linear spans defining...
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3880565 |
Twin clamp unit for blow molding machine
A twin clamp unit for a blow molding machine which has hydraulic cylinder means for alternately opening and closing first and second pairs of platens on which mold sections are mounted. The...
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3880561 |
Brassiere mold-forming machine
In preferred embodiments of the invention, there is provided a brassiere forming machine for molding brassiere garments from fabrics of textile or plastic sheet material placed transversely across...
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3865913 |
Multistation process for manufacturing hollow bodies
In a multi-station process for injection moulding preforms on a mandrel at one station, the mandrel carrying the preforms to a blow moulding station where they are blow moulded to the final shape,...
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3859015 |
SHAPING DETECTOR FOR TIRE MOLD
At least one fluidic proximity sensor is movable selectively to an outer position outwardly of a tire mold cavity and to a predetermined inner position within the cavity and is actuated in response...
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