US833447A - Electric signal for weighing-scales. - Google Patents

Description

8. J. DERBES.

ELECTRIC SIGNAL FOR WEIGHING SCALES.

' APPLICATION FILED NOV. 28. 1905.

illly g I E Mt. I l 1 m W TNESSES: INVENTOR A TTOH/VE YS PATENTED OCT. 16, 1906.

UNITED STATES PATENT OFFI E. STEPHEN JOSEPH DERBES, OF NEw'oRLE ns, Louisiana ELECTRIC SIGNAL son WEIGHINIG-SCVALESL:

Specification of Letters Patent. Applicption and November 28,1905. stemming-9'21 f f rammed Oct. 16, 1906.

To all whom it concern:

Be it' known that I, STEPHEN JOSEPH DERBES, a citizen of the United States, and a resident of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and Improved Electric Signal for -W'eighing-'Scales, of which the following is a full, clear, and exact description. Z. This invention relates to signals; and 1t consists, substantially, in the details of construction and combinations of arts hereinafter more particularly describe and pointed out in the claims.

The invention has reference more especiall to electric alarm-signals for association wit some part of a weighing scale or machine to be operated by the scale-beam for indicating to a salesman or other attendant of a store or other establishment that goods being weighed on the scale are a roachin the weight at which a balance wi e established therebetween and the poise or poises on the scale-beam.

One of the principal objects of the inventionis to PIOVldG an electric alarm-signal for the purpose named which is simple in con- 'struction and com aratively inexpensive to ity for long and repeate manufacture, besi es being effective and reliable in operation and (possessing the capacservice.

" The above and additional objects are at- {tained by means substantially such as are illlililstlpated 1n the accompanying drawings, in

Figure 1 is a side view of the upper portion of a weighing-scale having my improvements applied thereto. Fig. 2 is an enlarged transverse sectional view on the line 2 2 of Fig. 1

.' and showing the battery, bell, and electric 'poise 10.

the bell to ring in' the manner plained,

The device, further comprises an electric battery and an electric circuit in which the alarm-bell is included, the said special means second above referred to being also included in the circuit and constituting practo be extically a switch for opening and closing the same. g 7

Reference being had to the drawings by the designating characters thereon, 1 represents theshelf or upper part of an ordinary weighingiscale, centrall of whichis a post 2 by whic the arm 3 o the scale-beam (is pivotally supported at 5 in the usual manner, said shelf being formed at one end thereof with a guard 6, in which works the curved end 7 of the scale-beam, to which is sus-- pended at 8 the balancing-poise 9 and on wh ch is carried the usual slidable indicating- My improved electric alarm-signal comprises a stri 11 of wood or other insulating material lai across the upper surface of the said shelf 1 of the weighing-scale, one end of the said strip being flush with one side of the shelf and the other end thereof projecting slightly beyond the other side of the shelfas indicated at 12, for instance. Applied to the strip 11 at the last-mentioned end thereof is an angle-plate 13, the horizontal mem ber 14 of which rests in contact with the upper side of the strip and is secured to the latter' in any suitable wa as by means of screws 15. The verticai member 16 of the said angle-plate 13 is secured to the'projecting end 12 of the strip 11, also by means of screws 17, the said member being provided with t holder 18 for a vertically-disposed electric contact member 19, having the upper end thereof bent into the form of a hook 120, said contact member being adjustably held in said holder by means of a set-screw 21, it being mentioned. that the holder is secured to the said vertical member 16 of the angle-plate 13 in any suitable way,as by means of a binding-screw 22, extending through the member 1.6 from the inner side thcrof, as shown in Fig; 2.

' The shelf. is provided at the side thereof, adjacent tothe member 16 of the angle-plate 13, with a plate or disk 23, of insulating mate- A strip 11 and'is secured thereto by means ofv screws 26 and the vertical member 27 of which fits close to the adjacent side of the shelf 1, being secured to the end of thestrip 11 b' means of screws 28 or in any other suita le way. This vertical member 27 of the angle-plate 24 is also provided with a holder 29 for the vertical portion 30 of another electric contact member 30*, comprisingalso an integral horizontal sprin or elastic portion. 31, extending across t e shelf 1 at a suitable height above the angleplate referred to, with the free end portion thereof located within the bill of the hook 20 and normally held or maintained out of electric contact with said hook bythe Weight of the arm 3 of the scale-beam, which rests thereon, as indicated in ig. 2. The said vertical portion 30 of the second-mentioned contact member is adjustably held within its holder by means of a setscrew 32, this holder being secured to the member27 of the an le-plate 24 by means of v a screw 33. A suita le electric battery 34 is employed, the same being located in an desired position with reference to the shel 1 of the weighing-scale, and connecting with one pole thereof is one end of an electric conductor 35, theother end of which is secured to the holder 29 for the second above-mentioned contact member. Connectin with the other pole of said battery is one end of a short conductor 36, the other end :of which. is in elec trical connection at 37 which a binding-screw on an alarm-bell 38, While connectingwith another bindin -screw 39 on the alarm-bell is one end of anot er electric conductor 40, the other end of which is held inelectric contact with the holder 18 for the contact member 19 by means of the said mentioned bindingscrew 22. In this way a normally open elec tric circuit is derived; but as soon as the arm 3 of the scale-beam is caused to move upwardly the slightest extent the inherent resiliencyof the horizontal portion 31 of the contact member 30' immediately carries the free end of said portion into contact with the hook 20 of the contact memberllg, thereb closing the circuit and causing the alarm-be l iPO ring in an obvious manner.

1 From the foregoing itwill be seen that wh n the weighing-scale is not in use the weightipf the arm 3 will maintain the horiztintal pprtion 31 of the contact member 30 i. v

out of electrical contact with the hookv20 of the contact member 19,-and this relation will 6 5 be also maintained until the scale-beam is caused first to rise'b the scales to be weigh the operator or attendant weighing thegoods that the Wei ht of the goods is approachi'n that at whic a balance will be esta'blishe between the same and the poise or poises on the scale-beam. v

Having thus described my invention, I claim as new and desire to secure by Letters Patent L In a weighing-scale provided with a shelf, the combination with the scale-beam, of an insulating-strip appliedto the shelf, rods adjustably connected with the'strip, one

of said rods-terminating in a hook, and the other having a horizontal resilient portion extending beneath the scale-beam, and projecting Within the hook, and an' electric circuit including a signal having its terminals in the rods.

2. In a weighing-scale provided with a.-

shelf, the combination with the scale-beam, of an insulating-strip applied to the shelf, angle-plates having horizontal members secured .to the strip, and vertical members projecting downwardl' therefrom, one of said vertical members eing insulated from the shelf, an electric'circuit. including. an alarm having its terminals connected with 'the angle-plates, and means whereby the move ment of the scale-'beam.may act upon the terminals to close the circuit.

3. In a weighing-scale, provided with a shelf, the combination with thescale-bea'm, of a strip of insulatin materialapplied to the shelf and projecting% at one of its ends, angle-plates secured to vsaid strip at its ends, having vertical mem-u bers disposed on the sides of the shelf, astrip of insulating material between one of said vertical members and the shelf, an electnc battery, an electric circuit,including an alarm- .bell therein,-and having terminalssupported by the angle-plates, one of which comprises a hook, and the other avhorizontal resilient portion, normally held under tension' by Weight of the scale-beam thereon, the free findkof which portion ,projects, within said an alarm-bell therein, and having terminals the anglelates, one of which supported b hook, and t eother a horizontal comprises a eyond the side thereof I I .115 4. In a weighing-scale, provided with a shelf, the combination with the scale-beam,

the lacing of goods on ed, t us giving notice to resilient portion normally held tinder tension by weight oi the scale-beam thereon, the free end of which portion projects within said hook, the vertical member of onepf the angleplates being provided with fastening-screws therefor to said shelf, and the latter having an insulatinglate, against which the ends of said screws ear.

In testimony whereof I have signed my name to this specification in the presence of 10 two subscribing witnesses.

STEPHEN JOSEPH DERBES.

Witnesses:

J. H. FoRoELLE, Jr., J. B. LAPLACE.

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