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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4147618 | Method and apparatus for measuring product contents An improved apparatus for and method of measuring the mass of the contents of a product is described, in which the mass of the contents of the product is relatively small compared to the mass of the entire product. The products are sequentially conveyed t... | 04/03/1979 |
| 4143725 | Method and apparatus for separating bulk elongated products into quantities of predetermined weight A weighing apparatus for separating elongated products in bulk into quantities of a predetermined desired weight. The apparatus includes a weighing chute for receiving the elongated product, a weigher connected to the chute, and a sensor actuated by the w... | 03/13/1979 |
| 4139069 | Digital weighing method A checkweigher uses a strain gauge load cell to provide a digital count which in turn is utilized to provide for automatic rezeroing and simplified referencing. The "grey zone" is taken into account for 100% rejection. Give away weight and standard deviat... | 02/13/1979 |
| 4139068 | Method and apparatus for conversion of an uneven arm beam balance from metric weight to English weight measurement and vice versa Method and apparatus for conversion of an uneven arm beam balance from metric weight measurement to English weight measurement, and the reverse conversion are described. An illustrative example is a balance rated to measure in kilograms and having a main ... | 02/13/1979 |
| 4137976 | Method and apparatus for bale weight control The total weight of fibrous material delivered to a packaging device, such as staple textile fiber delivered to a baling press, is controlled so as to facilitate achieving more uniform package weight in accordance with a method and through the use of an a... | 02/06/1979 |
| 4130171 | Apparatus for batch-weighing a continuous flow of material This invention pertains to a method to batch-weigh a continuous flow of material. The material flows into a holding container which cyclically drops a load into a weighing container and then continues to receive the flow of material. Before the holding co... | 12/19/1978 |
| 4129189 | Weight control system The system controls the weights of individual charges of product or material accumulated by feeding material, preferably at a high "bulk" flow rate and then at a relatively low "dribble" flow rate, into one or more buckets or hoppers. As material is accum... | 12/12/1978 |
| 4121676 | Method of reducing hysteresis in a spring scale A method of improving the accuracy of scale readings featuring exciting the molecules of the supporting spring and clamping structure of the scale. The purpose of this excitation is to reduce the effects of hysteresis, creep and drift upon the measured lo... | 10/24/1978 |
| 4114707 | Weighing and transporting system A weighing system for articles in a production line. The system intermittently transports the weighed articles by means of pushing flights away from the weighing scale to a lateral position at which the article is either picked off of the article transpor... | 09/19/1978 |
| 4103750 | Method of and circuit for forming signals for damping control of an electrical measured-value indicator A method of producing signals for a damping control of an electric measurvalue indicator, especially an electromagnetic precision balance, having an active filter or impedance transformer located in a branch which filters out the a.c. voltage is disclose... | 08/01/1978 |
| 4102190 | Method and apparatus for determining the weight of slag on a bath of molten metal The weight of the slag floating on a steel bath is determined by multiplying the surface area of the slag by the pressure head at the slag-steel interface. The pressure head is determined by a method including passing a gas through a tubular member that i... | 07/25/1978 |
| 4094367 | System for single draft weighing of cars coupled in motion A system is provided for weighing railroad cars coupled in motion by providing a first scale and a second scale located forward of the first scale. The railroad cars are moved over the first and second scales, the rear trucks of the railroad cars are weig... | 06/13/1978 |
| 4063604 | Computing scale and method Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are ave... | 12/20/1977 |
| 4050530 | Method and apparatus for determining weight and mass A method and an apparatus is disclosed for measuring weighing and/or mass of an object. The object to be measured is subjected to an input frequency signal supplied to a piezoelectric crystal. Another piezoelectric crystal supporting the object is caused ... | 09/27/1977 |
| 4047584 | Bee-hive scale A portable bee-hive scale includes a housing, a power source, and a probe having a tongue extending from one end of the probe which is adapted to be removably inserted at predetermined locations in a bee-hive. The probe is designed to respond to the place... | 09/13/1977 |
| 4041289 | Digital scale or weighing apparatus There is disclosed an electronic scale which may, for example, be used as a bathroom scale, medical room scale, or otherwise. The scale provides a digital display of the weight of an object placed or positioned on a weighing platform and can provide said ... | 08/09/1977 |
| 4036316 | Computing scale and method with taring capability Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are ave... | 07/19/1977 |
| 4036315 | Weighing system A weighing system for weighing a vehicle such as a torpedo car containing a body of molten metal where the center of gravity of the body of molten metal may shift in an uncontrollable manner within the vehicle and which vehicle has a first group of axles ... | 07/19/1977 |
| 4015675 | Method of measuring a railway-vehicle load The load of a railroad car is measured by placing the base of a measuring device upon the flange of a track along which the railroad car is displaceable. The lower leg of a U-shaped member is lifted to bring the upper leg of this member into engagement wi... | 04/05/1977 |
| 4010809 | Weighing method A method of weighing wherein an apparatus conveys irregular pieces of product to a grading device for separating the regular pieces into two fractions respectively containing relatively smaller-sized pieces and relatively larger-sized pieces. A second con... | 03/08/1977 |
| 4004646 | Weighing system A weighing table is physically connected to the core of a solenoid. The time required for the current flow to build up to a value sufficient to move the core and raise the weight on the table is measured and serves as a measure of such weight. The solenoi... | 01/25/1977 |
| 3999621 | Low profile platform weighing scale A weighing scale in which a plurality of load cells support a load-receiving structure and in which a statically determinate restraint system is employed to restrain horizontal movement of the assembly of the load cells and the load-receiving structure.... | 12/28/1976 |
| 3988933 | Fluid mass sensor for a zero gravity environment Apparatus and method for determining the mass of a fluid comprising: a housing having an inlet and outlet for receiving and dumping the fluid, a rotary impeller within the housing for imparting centrifugal motion to the fluid and a pressure sensitive tran... | 11/02/1976 |
| 3979943 | Belt weighing machines A method of installing or adjusting belt weighing machines to reduce errors in the weights recorded applies to machines having a conveyor belt (25) which is driven over a series of idler rollers (22, 24, 23) in which one or more idler rollers (24) are sup... | 09/14/1976 |
| 3977483 | Material handling apparatus and method An apparatus and method for the determination and the standardization of package weight in a package filling line. The apparatus and method incorporates a standard filling means to initially underfill packages, a means to thereafter weigh the packages, a ... | 08/31/1976 |
| 3974888 | Method of weighing and apparatus therefor A method of weighing and an apparatus therefor, wherein articles varying in unit weight are continuously weighed by a single weighing machine to classify them into three ranks, one for articles having error weights outside the allowable error limits, anot... | 08/17/1976 |
| 3972411 | Method of feedig green pellets onto grate of pretreatment furnace in the production of reduced pellets In the production of reduced pellets such as reduced iron pellets by the grate-kiln system for firing, a distributor and a belt conveyor provided with a weighing machine are arranged between a sieving machine that sieves produced green pellets to predeter... | 08/03/1976 |
| 3971451 | Method and apparatus for indicating a load placed on a load-carrying vehicle platform This invention relates to a platform which can be displaced relatively to the frame side members of a load-carrying vehicle and which in the unloaded state is situated at the theoretical center of gravity of the vehicle load. A load placed on the platform... | 07/27/1976 |
| 3966000 | Weighing apparatus Apparatus for weighing a continuous flow of powder material, including two separate weighing hoppers, a diverting valve for switching the flow from one hopper to the other and a closure valve for emptying each hopper. Each hopper is supported for small ve... | 06/29/1976 |
| 3951221 | Computing postal scale Highly accurate and versatile computing scale which is particularly suitable for postal use. The platform of the scale is mounted on and supported by a single load cell in a system requiring no levers, pivots or other moving parts. Weight readings are ave... | 04/20/1976 |
| 3939928 | Weighing method and apparatus A weighing method and apparatus is provided wherein an excessive amount or number of objects to be weighed over the predetermined or target weight is distributed among a plurality of weighing machines and weighed with combinations of actually measured val... | 02/24/1976 |
| 3938601 | Weighing method and apparatus Weighing apparatus conveys irregular pieces of product to a grading device for separating the regular pieces into two fractions respectively containing relatively smaller-sized pieces and relatively larger-sized pieces. A second conveyor conveys the large... | 02/17/1976 |
