USRE12335E - A corpo - Google Patents

Description

RBISSUEDAPR. 4, 1905.

U..L. BOND. AUTOMATIC WEIGHING SCALE. APPLIUATION TILED JUNE 9. 1904.

wmea fave/Z1220 7 @idr&95 50/109 UNITED STATES Reissued April 4, 1905.

PATENT OFFICE.

CHARLES L. BOND, OF LOS ANGELES, CALIFORNIA, ASSIG NOR TO- BOND SCALE COMPANY, OF LOS ANGELES COUNTY, CALIFORNIA, A CORPO- RATION.

AUTOMATIC WEIGHING-SCALE.

SPECIFICATION forming part of Reissued Letters Patent No. 12,335, dated April 4, 1905. Original No. 711,984, dated October 28, 1902. Application for reissue filed June 9, 1904, Serial Noi. 211,800.

To (LZZ whmn it may concern.-

Be it known that 1', Cinemas L. Bonn, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Automatic VVeighing- Scales, of which the following is a specification.

My invention relates to scales forweighing predetermined quantities of any substance; and the object thereof is to provide a scale which will weigh any given quantity and will automatically cutoff the supply of such material when the givenquantity has left the supply-hopper. I accomplish this object by the devices described herein, and illustrated in the accompanying drawings, forming a part hereof, in which Figure l is a perspective view of my scale and the connected mechanism, a part of the supply-hopper being broken away. Fig. 2 is a perspective view, partly broken away, of the cut-off mechanism.

In the drawings, A represents any merchandise-scale of ordinary mechanism except that the beam is provided with a projecting depression-rod B in the free or outer end thereof. This scale is affixed to a base-plate C of nonconducting material, on which is affixed the contact-spring D, the free end of which passes through aperture E in contact-standard F. The top portion of this spring is preferably parallel with the base-plate and is bent back, so that a portion of the lower portion is parallel with the upper portion. In one portion of that part of the spring in which the parts are parallel a tl1u111b-screw Gr passes therethrough in a threaded hole. The end of this screw is adapted to be screwed against the other part to give an upward pressure on the depression-rod equal to the Weight of the material between the scale and the supply-hopper when the suppl;- of material is cut off therefrom, as hereinafterexplained. The con.

tact-standard is affixed to'the base-plate and is electrically connected by wire I with one pole of electromagnets J of theautomatic cutoff device. The other pole ofthe electromagnets is electrically connected by wire K with one pole of battery L. The other pole of the battery is electrically connected by wire M with the contact-spring. The electromagnets are mounted in a case N, to which is pivotally attached latch O, the free end of which is adapted to rest on the armature P of the electromagnet s when they are not energized. In the top of the latch is a notch O for the reception and retention therein when the end of the latch is resting on the armature of arm R of the cut-off shaft R, which is operated by spring S, one end of which is afiixed thereto and the other end to the case N. Shaft R is rotati vely mounted. in the case N and extends through the bottom thereof and has affixed thereto the cut-off blade T,1which is adapted when the arm of the cut-off shaft is released from the latch to enter slot U in delivery-tube U- andclosethe opening therethrough. The deli very-tube preferably passes through the case N and has affixed thereto or connected therewitlrsupply-hopper V, which. holds the material to beweighed". Case N is held a suitable distance above the scales by supporting-rods V, ,aflixed thereto and to the base-plate, so that the delivery-tube is located above the hopper of the scale.

If desired, a platform may be used on the scale instead of the hopper, and the material to be Weighed may be delivered directly into a bag placed on the platform for its reception.

Suppose that a grocer desires to put up pound packages of coffee. He places the counterpoise weight of the scale beam at the pound-notch, as with the ordinary scale, which causes the unweighted end of the contact-bar to be depressed, so that it will not touch the contact-standard He then [ills the supplyhopper V with coffee, which runs through the delivery-tube and into the hopper of the scale. As soon as a pound of coffee rests on the scalehopper the free end of the beam rises and the weighted end of the contact-bar brings the other end thereof into touch with the contact- .standard, which closes the circuit and enerrotation of the shaft to passcut-off blade T contact-standard equal to one ounce. There-' after the delivery-tube will be automatically closed whenever sixteen ounces of coffee are in the scale-hopper and between it and the cutoff blade. Any other quantity or substance can be weighed in like manner.

The thumb-screw in the contact-spring enables the operator to counterbalance the material falling into the hopper after the cut-off blades closes the delivery-tube. When the material is removed from the hopper of the scale, the-depre'ssion-bar again moves the contact-spring from touch with the contact-standard, which breaks the circuit. The cut-ofl' blade is then drawn out of the delivery-tube by hand, the projecting end being provided for that purpose. As the cut-off blade is aifixed to the spring-operated shaft R, its withdrawal from the delivery-tube will partly rotate shaft R. This partial rotation .will cause arm R to catch in notch O of the latch and raise it high enough for spring X to bring armature P under the end of the latch, which then holds the latch in position to hold arm R against movement until. the magnets are again energized and draw the armature from beneath the end of the latch, thereby permitting of the move-- ment of arm R, which permits the cut-off blade to close the delivery-tube, which occurs as soon as the requisite weight of coffee is in the hopper, thereby closing the circuit.

What I claim is 1. In a weighing-scale, an automatic delivery cut-off comprising a delivery-tube; a spring-actuated'cut-oif adapted to control the passage of material through said tube; a latch adapted to control said. spring-actuated cutoff; and means to control said latch comprising an armature electromagnets electrically connected to a batteryand to a contact maker and breaker, said contact maker andbreaker comprising a contact-spring electrically connected to said battery, said contact-spring having its free end passing through an aperture in the contact-standard and having in a 'portion of its length parts which lie in planes which are parallel; a thumb-screw passing in threaded contact through one portion of said' parallel portion and adapted to put a pressure on the end of said spring which passes through .the contact-standard, and a contact-standard having an aperture therethrough, said standard being electrically connected to said electromagnets. I

2. The combination ofa scale adapted to support and weigh a given quantity of any substance, with a delivery adapted to deliver such substance on the scale, said delivery having thereon a cut-off mechanism adapted to cut off the substance being weighed when any As soon as all the predetermined quantity of such substance is upon the scale; said cut-off mechanism comprising a spring-actuated cut-oif blade; a

, latch adapted to hold said cut-oil blade nor-- 1 mally open to permit the material to pass to i the scale; an armature adapted to retain the l latch in position to hold the cut-off blade open,

electromagnets electrically connected with a battery and with a circuit maker and breaker;

a circuit maker and breaker electrically connected to said battery; said circuit maker and breaker comprising a contact-spring and a contact-standard, adapted to stand normally out of contact; a depression-rod affixed to the scale-beam adapted to bear upon the contactspriug and hold it out of contact with the contact-standard until the predetermined quantity of the given substance is on the scale;

said contactspring having parallel portions with a thumb-screw passing in threaded contact through one of the parallel members and adapted to be screwed against the other portion and increase the tension thereof.

3. The combination of a weighing-scale and a delivery device for delivery of material thereto, a magnetically-controlled cut-off for said device,- an electric circuit controlling said cut-off and including contacts controlled, by the movement of the scale-beam when said beam is in a definite position, one of said con tacts being relatively fixed and the other relatively movable with respect to the scale-support, said movable contact engaging the scalebeam to exert pressure thereon and means for adjusting the pressure of said movable contact on the scale irrespective of theposition of the fixed contact.

4. The combination-of a weighing-scale and a delivery device for delivery of material thereto, a magnetically-controlled eu't-ofl for said device, an electric circuit controlling said cut-off and including contacts controlled by beam is in a definite position, one of said con- .tacts being fixed relative to the scale-beam support, and the other contact being a springcontact and movable resiliently toward the first contact, and adjusting meansfor varying the pressure of said spring-contact toward the fixed contact. Y:

5. In a weighing-scale, an automatic delivery cut-off comprising a deliverytube, a spring-actuated cut-ofl adapted to control the passage of material through said tube, a latch adapted to control said spring-actuated cutofi, and means to control said latch comprising an armature, an electromagnet operating said armature, a battery and circuit connected to said electromagnet, and circuit making and breaking contacts forsaid circuit, one of which contacts is spring-actuated toward the other contact, ascale with means engaging the spring-actuated contact to hold it from the other contact, and means for adjusting loo the movement of the scale-beam whensaid I the pressure of the spring-actuated contact toward the other contact.

6. The combination of a weighing-scale, means for delivery of material thereto, a cutofl devicefor said delivery means provided with means for moving it to closed position,

a latch holding said cut-off device in open position, a magnet controlling said latch, an electric contact device provided with springpressure means tending to,close the contact and having a part operated by the scale to open the contact, means for adjustment of the pressure-of the spring-pressure me'ans, and an electric circuit and battery ,connected to said magnet and contact device.

7. Thevcombination of a weighing-scale,

means fordelivery of material thereto, provided with a magnetically-controlled cut-off device, a spring-contact device operated by the scale and connected to control said cut-ofi device, and means for adjusting the springpressnre of the contact device.

In testimony whereof I have signed my name to this specification,1n the presence of two subscribing witnesses, at Los Angeles, county of Los Angeles, and State of California, thislst day of June, 1904.

JHARLES L. BOND.

. Witnesses:

ARTHUR P. KNIGHT, FREDERICK S. LYON.

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