US311745A

US311745A - halloce

Info

Publication number: US311745A
Authority: US
Publication date: 1885-02-03
Anticipated expiration: 1902-02-03

Description

2 Sheets-Sheet l.

(No Model.)

D. HALLOGK.

WEIGHING SCALE.

No. 311,745. Patented Feb. 8.1885.

N. PiTERs. Pimm-unwA-mplwr. wammgmn. D. C.

(No Model.) 2 Sheets-Sheet 2. D. HALLOGK.

WEIGHING SCALE.

110.811,745. y Patented Feb.3,1885.

UNITED STATES PATENT OEEICE.

DAVID HALLOCK, OF NEV YORK, N. Y.

WEIGHING-SCALE.

SPECIFICATION forming part of Letters Patent No. 311,745, dated February 3, 18525.

A pplicatiou tiled July 14,1883.

T0 all whom t may concern:

Be it known that I, DAVID HaLLoeii, of the city and county oi' New York, in the State of New York, have invented a new and useful Improvement in Scales, ot' which the following is a specification.

My invention relates to a scale in which several weights are held on a fixed support, from which they are raised automatically and successively by the upward movement of the jack produced by placing the commodity to be weighed on the scale; and it consists in various novel combinations ot parts and details of construction hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure l is a side elevation ot' a scale embodying my invention, the weight-case, weights, and appurtenances'being shown in section. Fig. 2 is a' plan ot' the scale, including a horizontal section of the weight-ease and a hood which eoversthe weights. Fig. 3 is a vertical section and a partial section of the weights in a plane transverse to the length of the scalebeam. Fig. 4.- is an elevation ot' the weightsupport en'iployed.

parts of the jacks.

Similar letters of reference designate correconsisting of an open frame provided with the knife-edge pivots a, which rest in bearings a' in the top ot' a post or standard, B, projecting upward from the base B'. rlhe bearings c are covered by caps a?, which preclude the pivots from being removed entirely from the bearings until the caps are taken oli.

over the pivots a, are projections c, and above the projections and on the under side ot cap a2 are concave recesses c, (see Figs. l

and 6,) adapted to receive such projections l when the beam is wedged up, so as to raise the pivots a oft' their bearings.

At the two ends ot` the beam A are k niteedge pivots b c, upon which the jacks C D are respectively supported, the jacks being constructed with bearin gs b c, which are above Fig. 5 is an elevation of. the end ot` the scale, and Fig. 6 is a detail sectional view of the beam, its bearings, and l.

(No model.)

below the beam the jacks C D are respectively provided with cross-pieces or stretchers C D, and on the under side of the beam are recesses b2 0*.

In packing scales for transportation it is usual to wedge or block up the jacks, so as to remove the pivots a b c from contact with their bearings; but this does not commonly prevent the bea-m from moving lengthwise, and so bringing the said pivots in contact with the sides ot' said bearings.

In my scale, when the jacks are wedged or blocked up to prepare the scale for transportation. the cross-bars or stretehers C D/ are brought up into the concave recesses# ci, as shown in Fig. G, and the jacks are thus locked against a movement lengthwise ot' the beam, and the projections a are brought up into the concave recesses at, and the beam is thus locked against longitudinal movement. Therefore the pivots are kept ont of contact with the sides of their bearings, as well as the portions on which they normally bear, and hence are preserved from injury.

Upon the jack U is supported the scale-pan E or the platform for articles to be weighed, and the jack D acts upon the weight at the opposite end of the beam.

To the lower portion of thejack D is loosely pivoted a swinging` check or guide, O, whereby thejack is maintained in a vertical position as it is raised and lowered, and the weights are prevented Vfrom rubbing against the support, which would produce friction.

The weight-case is formed in two sect-ions, F Il", one ot' which, F, is attached permanently to the base B, while the other, F', is detachably secured in place, and may be removed, i when desired, to altord access to the interior On the top of the beam A, and directly f ot' the weight-scale.

G designates the indicator, which has knifeedge pivots d resting in a bearing, c, projecting from the portion F ot' the weight-case. The indicator extends through a slot in the 1 top ot' the wei glitt-case, and ranges over a dial, G, to indicate the number ot' pounds weight of the article in the pan. rlhe indicator G is formed with a curved arm, G2, extending from a point just above the pivot d around under the bearing e, and having a pin-and-slot couand rest upon the pivots b c. Immediately nection, c, or other loose connection with the IOO jack D. This construction is very advantageous, because the curved arm G2 will bear upon the bottom of the bearing e, and so prevent the indicator from being raised sufficiently to detach the pivots d from the bearings e. This construction prevents the indicator from being accidentally dismounted during transportation or rough usage.

The weights in all cases for use with this scale are arranged in a vertical tier and about a common center, and they are adapted to be raised or lifted successively by thejack D.

As here represented, the weights consist of ilat plates H H H2 H3, which are of equal or unequal weights. They may. for example, when resting on the j ack, each balance a pound weight in the pan.

I designates the support for the weights, which is formed upon a bracket secured to the port-ion F of the weight-case- The ends and sides of this support converge upward, as best shown in Figs. l and 4, and the ends are ot' stepped construction, as shown in Figs. 3 and 4, having bearing-surlhcesfffzfz.

The weights, of which any number may be used,are provided or furnished with apertures or slots g ggl g, which conform in shape to the support,the aperture g in the lowest plate, H, being ot' a size to pass downward over the support until it reaches the step or bearingf, the next plate, II', havi ng its aperture f/ ofsuch size that it will pass downward over the support I until it rests on the step or bearing j", and so on, the weights being supported above and out of contact with one another in a ver tical tier and about a common center.

In the back of the aperture in each weight is a recess or notch, h, and on the back ofthe support is a vertical rib, h, which is received in the notches, but is sutticientlysmaller than the notches to prevent the weights from binding on this rib as they rise and fall. This rib and the notches form a guard for preventing the shifting of the weights laterally to such an extent that they will,when moving downward, stop upon anystep or bearing above the proper one. In lieu of this guard, a guard or guide ot' any other construction may be used.

As shown in Figs. 3 and 4. the surfaces t" at the ends ofthe support I between the steps or bearingsfffzf3 are inclined,while the edges of the apertures gtr/g2g are or may be straight. It will also be seen from Fig. l that the sides of the support I are inclined; consequently as the weights are lifted they are carried away from the inclines, and the spaces on all sides between the supports and weights increase, and there is no liability of the weights rubbing on the support, and t-hus impairing the accuracy of the scale. The support I, as here constructed, affords clearance to the weights on all sides, and in falling back the weights are guided in every direction.

J designates a hood which covers the weights and prevents dirt or dust from accumulating on them, and so impairing to a certain extent the accuracy of the scale, and also to prevent weight to cant or tilt.

particles from lodging between or on the weights or on the bearings, so as to interfere with the correct movement and action of the weights and scale. The hood J is imperforate, and is supported in a fixed position immediately over the weights. It will therefore be very effective in protecting the weights. As here shown, the hood rests upon and is se cured to the top of the support I, and extends down behind the weights, as shown in Fig. l. The back of this hood is shown as beveled atj, so that if the weights strike against itin going up they will not bind, but will fall away. The part J not only serves as a hood, but the weights are of such thickness and the part J is secured at such a distance above the step j of the support I that the hood will prevent any one ofthe weights from passing and catching upon the step ofthe support correspond` ing to the next weight, even it' the scale be turned upside down, as it might be in transportation. For example, the hood Jwill prevent the weight H2 from passing' beyond or above the stepf3 and lodging thereon. The hood J therefore forms agnard to prevent derangement ofthe weights on the support. As is best shown in Fig. 3, thcjaek l) straddles or extends beyond the base Vof the support I at each end, and acts upon the lowcrmost weight, H, near its ends, and hence the weight falls equally on opposite sides of the longitudinal center of the beam, and the two or more points otl contactof thejack and weight being so far apart, giving a broad base, there is little or no liability or tendency for the beam or when weight is placed in the pan, thejack D rises and first picks up the lowermost weight, H, next the weight H picks up weight H', and so on until all the weights have been raised, cach weight raising and supporting the weight next above it. The upwardly-projecting ends ofthe jack D are plain i'latsnrfaces and bear on plain surfaces on the lowerniost weight, and hence any side or lateral movement of thejack may take place without crowding the weights against the su p I port, as thejack will be free to so move without imparting such side movement to the weights. This is important, as in carelessly placing goods in the scale-pan the beam and jack are liable to be shifted laterally more or less.

It will be observed that the under side of each weight is on the same plane as the step or bearingf orf, ttc., on which it rests, and hence the lifting-point ofthe weightis 011 the same plane with its support. It' thc liftingpoint is at a distance above or below the snpporting-point, there is liability, especially when the scale is worn, ofthe weights tilting and rubbing on the support, thereby creating friction, which impairs the accuracy et' the scale.

The several weights H H, ttc., are only capable of weighing iixed amounts automatically, and to provide for indicating weights intermediate between those indicated by the weights H H', \"c., I attach to the beam A a supple- IOO IIO

mental graduated beam or bar, S, upon which a weight, S, may be shifted horizontally to indicate the intermediate weights. l

Frein the above description it will be observed that in my scale the weights are held one above the other on a fixed support, from which they are raised automatically and successivel y by the upward movement of the jack produced by placing on the scale a commodity to be weighed. Such a scale is radically dit'- ferent from one in which the weights are arranged on a movable support, which must be lowered by a manual operation before weighing. to deposit oneor more ofthe weights upon the jack.

Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The combination, with a scale-beamand its jack, of a number of weights and a fixed support comprising steps for retaining them one over the other with their centers of gravity all on the same vertical line, and also coniprising inclinest' above the steps, substantially as and for the purpose described.

2. The combination, with a scale-beam and its jack, of a number of weights adapted to be lifted successively by an upward movement of said jack,and a fixed support for said weights, the points of supports ofthe weights and the points acted on in raising them being in approximately the same planes, and the weights or support being beveled or inclined on all sides to guide the weights in all directions as they fall back to their proper position, and to atlord an increasing space on all sides between the weights and support as the weights are lifted, substantially as described.

3. The combination, with a scale-beam and its jack, of a vertical tier of weights adapted to be lifted successively by an upward move ment ot' said jack, and a fixed support for the weights, the weights or support being beveled or inclined on all sides to guide the weights in all directions as they fall back to their proper positions on the fixed support. and to afford an increasing space on all sides between the weights and support as the weights are lifted by the jack, and the lowermost weight having a plain surface acted upon by plain surfaces onthe jack to allow the jack t move laterally without so moving the weight and crowding it against the support, substantially as described.

4. rllhe combination, with a scale-beam and ajack, of a vertical tier of weights capable of being raised successively by an upward movement of the jack. a fixed support for the weights. the said beam having a graduated bar, and a weight movable on said bar for indicating weights intermediate between those indicated by the weights of the series, substantially as described.

5. The combination, with a scale-beam and its jack, of a vertical tier of weights adapted to be lifted successively by the upward movement of the jack, and a fixed support comprising steps for the weights and inclines above the steps, whereby the weights in rising move away from the inclines, substantially as herein described.

6. The combination, with a scalebeam and 7o a vertical tier of weights adapted to be lifted successively, of a jack on the beam adapted to act upon the lowermost weight near .its ends, and to raise the weights successively by its upward movement, and a fixed support for the weights between the two bearing-points ofthejack, substantially as and for the purpose described.

7. The combination, with a scale-beam, of a iixed stepped support, a vertical tier of 8o weights, the several weights having apertures of dii-ferent sizes adapted to the several steps of the support, and a `jack adapted to act upon the lowerniost weight and to raise the weights successively by its upward movement, sub- 8 stantially as herein described.

S. The combination, with the scale-beam and its jack, of the stepped support I, provided with a rib, h', and weights H H. &c., having apertures of different sizes,and notches 9o h, substantially as described.

9. rThe combination, with the scale-beam, of a number of weights to be lifted successively, an indicator having knife-edge pivots and bearing, and a curved arm extending from the indicator around under said bearing and connected with said jack, substantially as described.

l0. The combination, with the scale-beam and its jack, of a number of weights to be sucroo eessively lifted by the jack, the support comprising steps for the weights, and on which they are placed from the top thereof, and a hood independent of and within the case ot' the scale, placed immediately above the support and serving to protect the weights and to hold them in their proper positions on the stepped support, substantially as herein described.

ll. The combination, with the scale-beam IIO having pivots c b c, and having recesses b'l ci in its under side and projections c3 on its upper side, ofthe caps ahaving concave recesses at, adapted to receive said projections, and the jacks having bearings for the pivots b c, and provided with portions adapted to engage with the recesses b2 ci of the beam for the purpose of providing for locking all the parts in such manner as to keep the pivots securely out of contact with their bearings when the scale is I2O packed, substantially as herein described.

DAVI D H A LLOCK.

Witnesses:

FREDK. Haynes, En. L. MORAN.