USRE6888E - Improvement in platform-scales - Google Patents

Description

' or contents while at rcstor in .UNITED STATES WILLIAM W. REYNOLDS, OF BRANDON,` VERMONT, AssiGNOR TO THE `BRANDON MANUFACTURING COMPANY.

IMPROVEMENT IN PLATFORM-SCALES.

Specification forming part of Letters Patent No. 132,321, dated-October 15, 1872; reissue No. (LGSS, dated February 1, 1876; application filed December 1, 1875.

To all whom it may concern:

Be it known that I, WILLIAM W. REY- NOLDS,.of Brandon, in the county of- Rutland and State of Vermont, have invented new and useful Improvements in- Platform-Scales and do hereby declare the same to be described inv My invention consists 1n certain the following specification and represented in are for weighing railway-carsand their freight motionon the platforms of said scales, such invention being to overcome the diculty heretofore often experien ced of obtaining correct weight by reason -of torsion of the levers below the platform.

1 Ot'the said drawings, Figure 1 is a side elevation' of a platform-scale ywith my said invention. Fig. l2 is a top view ofthe system of levers'and their connections.. Figs. 3, 4,5, 6, and 7 represent details to be hereinafter explained. Fig. 8 isa longitudinal section.

In the said drawings, A A denote twoA shafts arranged parallel to each otherand transversely underneath the platform P, each ofthe said shafts being provided at each of its ends with short knife-edged arms m, andalso another and larger arm, B, at its middle. This latter arm extendsup from the shaft at right angles thereto, and in a plane 'at a right angle with the two end arms of the shaft. There is pivoted to each a'rm B a vibratory knife-edge supporter, G, provided with a knife-edge, a, and a pivot-hole, p. This supporter() is shown in perspective' view in Figi 6, yit being to engage with a solid bearing-block',D, (also shown in perspective view in Fig. 5,) applied to a' rod or connection, b. The' said block D, grooved on its sides and endshorconstructed as shown in Fig. 5, admits of another rod or connection, b, being joined with the first rod b by means of a pin, q, which, going .through the two rods, serves to connecttheln and aid in holding the block in place. vThe t'wo vibratory knife-edge supporters C C are applied to the arms B B, having their lbearing-blocks D D connected together `and with the angular lever E by rods A b b, one ofwhich is pivoted to theshorter arm of the said angular lever, such lever E being improve-- ments in platform-scales, especiallyl in such as arranged with the levers A B m in manner as shown, and pivoted 'to a stationary support, Q. The lever E, by means of a hanger and knife-ed ge bearings, is connected with the shorter arm of a lever, G, whose longer arm is joined4 with ythe weigh-beam H by a rod,V t,

4pi'voted to the two.

In practice, the platform, one-half of which is shown as supported on; bearings u u, resting on the knife-edges of the shorter arms of the levers A B in, is also to have other similar supports, and another set of levers, A B" lm-E, which are to be arranged under itsoppositehalf'and connected with the lever G.

sides of the rack, and outside of the rack such stop has projected from one of its pivots an arm, d, carrying anoverbalance ball or weight,

K, which serves to hold the stop when in eitherl `of its extremel positions.

. The ball di, instead of being directly over" the weigh-beam and within the rack, as here tofore, b y which itis rendered inconvenient to v operate it, is now entirely Outside of the rack,

where itcan be manipulated and access obtained'to itV to better advantage, comparatively speaking.

In the opposite'sides of the rack are angular openings to admit the pivots ofthe stop J, each ot' which pivots is held in position in the slot by means of a bent wire or staple, e, inserted in holes inthe sides of the slot, the'same being as shown in Fig. 7. ThisI havingl been-done, the slot -is to be filled with soft'ggnetal.

Having thus described my invention', whatI claim as new, and desire to secure by Letters.

1. The knife-edge supporter C, provided with lthe knife-edge a, and pivotedA to the arm B of the platform-bearing levers, such application being for use as set forth.

2. The combination of the bent lever E, one or more shafts, A, and the end arms'm m and intermediate' arm B, extended from each of said shafts, as set forth, such lever E and the PATENT v OFFICE.

said arm or arms E having connections, and 4. The overbalance-ball l; and its arm d,

all being applied to a scaleplatform, P, snbarranged outside of the beam-rack l, in comstantially as represented. A Y bnatou with the stop J, arranged within such 3. The combination of the levers G E` one rack and connected with such arm, all being` or more shafts, A, and end and intermediate as shown and described.

arms m ml B, extended from each of such shafts,

:is represented', tlivsaid levers, shaftor shafts WM. W. REYNOLDS; A, and the arm or arms B thereof having con Witnesses: netions, and being arranged with a platform, A G. W. PARMENTER,

f 1P, all substantially as explained. H. C. COPELAND.-

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