Abstract: A weighing and packing device for successively producing packages of product each of which is conformable with a predetermined weight condition. The device comprises a pair of combination weighing and packing machines mounted on a common frame as a single unit. Each machine includes a combination weigher and an associated packer which are mechanically interlocked so that the batches of product successively delivered from the combination weigher are packed by the packer in tubular bags fabricated successively from a sheet material. The combination weighers of both machines have their own control units electronically interlocked so that both machines can operate in mutually synchronized or nonsynchronized fashion with or without time lag.

Abstract: A combination weighing system for weighing batches of articles and selecting a combination of batches satisfying a condition predetermined for both total weight and number of articles. In the system, the measured weight of each batch is divided by a reference unit weight of the articles and converted into the number of articles which is then rounded into an integral number. This integral number is multiplied by the reference unit weight and restored to the weight of articles. Then, both weights or numbers appearing before and after the rounding operation are mutually weighted and averaged and the resultant weighted averages are subjected to a conventional combination selecting operation.

Abstract: A product feeding device suitable for use with a combination weighing machine having a plurality of weighing hopper. The device comprises a central vibrating dispersion table for dispersing product fed to the center of the table outwardly toward the periphery of the table, and a plurality of retaining hoppers corresponding to the weighing hoppers disposed at the periphery of the table for receiving product directly from the table. Each retaining hopper is equipped with a suitable mechanism for discharging products therefrom.

Abstract: A method of weighing out for packing quantities of product each having a weight satisfying a predetermined weight condition by a combination weighing machine including a plurality of weighing hoppers for weighing the product respectively and a plurality of auxiliary hoppers located under the weighing hoppers respectively for receiving the weighed product discharges therefrom. The weights of product are initially stored in weighing hopper memories corresponding to the respective weighing hoppers and then transferred to auxiliary hopper memories corresponding respectively to the auxiliary hoppers at the same time as the weighed product are discharged into the auxiliary hoppers and the emptied weighing hoppers are automatically reloaded with fresh product to be weighed when a stable state is reached.

Abstract: A method of weighing out for packing quantities of product each having a weight satisfying a predetermined weight condition by a combination weighing machine including a plurality of weighing hoppers for weighing the product respectively and a plurality of auxiliary hoppers located under the weighing hoppers respectively for receiving the weighed product discharged therefrom. The weights of product are initially stored in weighing hopper memories corresponding to the respective weighing hoppers and then transferred to auxiliary hopper memories corresponding respectively to the auxiliary hoppers at the same time as the weighed product are discharged into the auxiliary hoppers and the emptied weighing hoppers are automatically reloaded with fresh product to be weighed when a stable state is reached.

Abstract: A combination weighing method using a combination weighing machine comprising a plurality of weighing hoppers for weighing product and a plurality of auxiliary hoppers located under respective weighing hoppers for receiving weighed product discharged therefrom. The weights of product are initially stored in weighing hopper memories corresponding to the respective weighing hoppers and then transferred to auxiliary hopper memories weighed product is discharged into the auxiliary hoppers and the emptied weighing hoppers are automatically reloaded with fresh product to be weighed. At least the weight values stored in the auxiliary hopper memories are combined for selecting from the resultant combinations a combination whose sum weight satisfies a predetermined weight condition. The contents of the auxiliary hoppers corresponding to the selected combination are discharged into a collection chute for packing and the emptied auxiliary hoppers are reloaded from the corresponding weighing hoppers.

Abstract: A combination weighing machine, comprising a plurality of weighing units each having a weighing hopper, and a plurality of auxiliary hoppers for receiving and holding the contents of corresponding weighing hoppers. Each auxiliary hopper is provided with a memory for storing weight information of its content, and a combination providing a total weight satisfying a predetermined weight condition is selected from the weight information supplied from all the effective weighing units and memories.

Abstract: A combination weighing machine, which is used typically for packing a plurality of articles in each bag or the like so as to render the total weight of each bag to satisfy a predetermined weight condition, including a plurality of weighing units for weighing the articles each at the same time, arithmetic means for selecting some of these units the total weight of which satisfies the predetermined weight condition, and means for unloading the selected weighing units for delivery of the articles for packing and then loading them with new articles; each adjoining pair of weighing units being provided with a common auxiliary hopper for receiving weighed articles from either unit of the pair and keeping them for participating in the combination selecting operation together with those articles on the weighing units, thereby improving weighing accuracy without increasing the number of expensive weighing units.

Abstract: A combination weighing machine, which is used typically for packing a plurality of articles in each bag or the like so as to render the total weight of each bag to satisfy a predetermined weight condition, including a plurality of weighing units for weighing the articles each at the same time, arithmetic means for selecting some of these units the total weight of which satisfies the predetermined weight condition, means for unloading the selected weighing units for delivery of the articles for packing and then loading them with new articles, and, especially, means for adding a small quantity of articles to this system and resuming combination selecting operation when no desired combination has been obtained with the original weighing units.

Abstract: A dispersion feeder for distributively feeding product to a plurality of weighing units arranged circularly about a common axis, comprising a plurality of conveyer troughs arranged radially about the axis for communicating by their outer ends respectively with the weighing units, and a plurality of vibrating units attached respectively to the conveyer troughs for subjecting each conveyer trough to independent vibration. Each conveyer trough is provided with a projection inclined upwardly and radially inwardly toward the common axis. These projections are arranged radially about the axis without mutual contact to form a conical or domed substantially continuous central dispersion surface, and each projection and its corresponding conveyor trough is adapted to be subjected to independent vibration to feed product supplied directly onto the dispersion surface to the corresponding conveyer trough.

Abstract: A device for feeding product from a single source to a plurality of weighing units of a combination weighing machine, which are arranged in circular array, comprising a centrally disposed generally circular dispersion feeder for radially dispersing the product fed to its center portion and a plurality of radially disposed vibration conveyer troughs communicating with the respective weighing units for receiving the product from the periphery of the dispersion feeder and conveying them to the corresponding weighing units.

Abstract: An automatic continuous weighing machine of the belt conveyer type which can weigh a number of articles successively fed thereto, the improvement of which is that plural pairs of endless chains and corresponding weighing units are included, each of the weighing units being operatively coupled to each pair of chains, so that the articles to be weighed are successively put on the different pairs of chains and weighed by the corresponding weighing units without interference with the measurement of the adjoining articles, thereby enabling reduction of the feeding interval of the articles and a corresponding increase of weighing speed and efficiency.

Abstract: A conveyer system having a pair of spaced roller chains driven by chain wheels and having carriages disposed between the chains and pivotally coupled thereto by means of shafts. The carriages while normally maintaining horizontal positions, each include a pair of horizontally disposed rollers and a pair of vertically disposed rollers for cooperation with fixed guides for maintaining the carriages horizontal whether travelling through horizontal, vertical or inclined paths. The system also includes guide means coupled to the carriage shafts for engaging wheels having recesses therein to hold the carriages horizontal while the chains travel about the supporting chain wheels.