US776880A - Lever-balance. - Google Patents

Description

No. 776,880 PATENTED DEC. G, 1904.

` G. W. ALLEN.

LEVER BALANCE.

APPLICATION FILED AUG.15.190-1.

N0 MBEL.

MTA/5555.-

Patented Decernbeil 6, 1904.

PATENT OFFICE.

CHARLES W. ALLEN, OF PHILADELPHIA, PENNSYLVANIA.

LEVER-BALANCE.

SPECIFICATION forming part of Letters Patent No. 776,880, dated December 6, 1904.

Application filed August l5, 1904. Serial No. 220,789. (No model.)

To au whom it may concern.-

Be it known that I, CHARLES W. ALLEN, a subject of His Britannie Majesty, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Lever-Balance, of which the following is a specification.

My invention relates to improvements in lever-balances; and the object of my improvement is to provide a new and useful adaptation of the well-known principle of the Roman steelyard that will primarily constitute an eiiicient and convenient weighing-machine and incidentally furnish a suitable medium for advertising purposes. I accomplish this by providing a plane surface for the beam instead of the ordinary bar, by coniining the movable counterpoise in a horizontal slot instead of by a protuberance at the extremity of the long arm, by having a spring-clip provided with an eye or hook at the extremity of each limb at the end of the short arm to hold the matter to be weighed in place of the usual hook or pan, and by providing an index, which constitutes part of the hanger, to correspond with a fixed mark on the surface of the beam to indicate when the same is in equilibrium in lieu of the separate means ordinarily employed to that end.

Having reference to the accompanying drawings, Figure 1 is a front view of the beam of my lever-balance; Fig. 2, a similar View of the spring-clip; Fig. 3, a similar view of the counterpoise; Fig. 4, a similar view of the hanger; and Fig. 5, a similar view illustrating the balance with all the parts assembled and in use, the dotted line showing the position the beam would assume when in equilibrlum.

The beam tof mylever-balance, Eig. l, may be made of metal, Celluloid, or other suitable rigid material, and it has a plane surface. It is provided with the horizontal slot a', having at suitable intervals along its lower margin the nicks, as shown, above the figures l, 2, 8, and 4, which correspond therewith, adapted to receive and to detain the link f'", whereby the traveling counterpoise f is supported and joined to the beam a. It is also provided with the perforations 60 and am for the purposes hereinafter described and likewise with the broad ar-row-mark am".

The beam a is suspended by the hanger Fig. 4, which is provided at its lower extremity with the index the point of which will be in correspondence with the point of the broad arrow om" when the balance is in equilibrium. Itis furnished at its upper extremity with the ring 5', of diameter suitable to receive a supporting-finger. There is aperforation 6", corresponding with the perforation am, through both of which the rivet c is passed and then upset. the rivet o thereafter performing' not only the function of uniting the beam a and the hanger but constituting the axis or fulcrum upon which the balance is operated.

The spring-clip d, Eig. 2, which depends from the short arm of the beam a, may be formed of spring-wire and is adapted to hold firmly, at right angles to the beam o, the letter e or other matter to be weighed that is forced between its limbs, which are provided at their extremities with the eyes or hooks d" and d. It is joined to and suspended from the beam t by the link (ZW, which passes through the perforation am.

The counterpoisef, Fig. 3, is a mass of appropriate weight movably supported by the link fm, which passing through the perforation f and the slot a unites the counterpoise f with the beam a.

In use, Fig. 5, the letter e, an end view of which is shown, is forced between the limbs of the spring-clip CZ. The balance is then suspended by a iinger passed through the ring 5. Lastly, the link f" of the movable counterpoisef is shifted along the lower margin of the slot o until it lodges in whichever of the numbered nicks will indicate a greater weight than the matter being weighed.

In cases where it be found that matter to be weighed cannot conveniently be held between the limbs of the spring-clip d it may be placed in a pan or bag attached to the eyes or hooks d and c The plane surface of the body of the balance furnishes useful space whereon the ofcial post-oflice rates and also any advertising matter may be stamped or printed.

IOO

that indicated by a ligure relating to the pm'- tieular nick in which the eounterpoise then rests, Substantially as Set forth.

ln testimony whereoil I h ave signed my naine to this speoiiieetion in the presence of two subscribing witnesses.

CHARLES W. ALLEN.

l/Vitnesses: i

A. E. GRAHAM, W. PERCIVAL JOHNSON.

Images