US1692356A - Measuring box - Google Patents

Description

Nov. 20, 1928..

F; J. STRAUB MEASURING BOX Filed F sh. 1, 1927 6 .InlliI-fll Patented Nov. 20, 1928.

UNITED STATES 1,692,356 PATENT OFFICE.

FRANCIS J. swarms, or NEW KENSINGTON, PENNSYLVANIA.

' MEASURING BOX.

Application filed. February 1, 1927. Serial No. 165,238

My invention consists of an improvement in measuring boxes for concrete mixing machines and similar apparatus. 7

It has in View to provide ameasuring box of such kind for materials which are handled in lump or powdered form, as, for instance,

the raw material for making aggregate for concrete construction in'article or bulk form.

In the particular use of the invention involved, it is particularly designed for measuring theraw aggregate, or cement, or both, for delivery to a mixer, in the manufacture of building blocks and the like. It may be used, however, in connection with various kindsof material, the primary object being to provide a simple, rapidly'operative means for periodically delivering a measured amount from a source of supply to a utilizing machine.

In the drawings: I

Fig. 1 is a. view partly'in elevation and partly in section, showing the mixing box in relation to a hopper and mixer, the section being on the line II of Fig. 2;

Fig. 2 is a cross section on the line II-II of Fig. 1;

Fig. 3 is a v1 showing the adjustable" wall shifted inwardly; I I

Fig. 4 is an enlarged sectional detail view 7 on the line IV -IV'of Fig. 2. 3

Referring to the drawings, A is the delivery end of a hopper adaptedto discharge raw material into the movable measuringbox for charging measured amounts into the shell of a. mixer '13 or the like. Extending laterally from the side of the mixer is an inclined shelf 2, connected I therewith and properly supv I ew similar to-Fig. 2, showing the measuring box tilted for delivery and also ported, forming a receivingplatform or bottom for the measured materiahfrom which it is shifted into the mixer upon tilting of the on the angles 6, to adapt it to a substantially close relation to'the inclinedshelf 2.

g The lower edges oftheend walls 3 substantially conform to the. inclination of shelf 2, being slightly rounded, as at 8, for clearance in swinging-inwardly.

Rear wall-5 is fixedly connected by rivets or bolts with endmost angle members 9, which are piovtally connected at 10 by bolts with the lower inner edge portions of the end plate, for mward or outward swinging. End plates 3 are provided with slots 11, for adjustable connection by bolts 12, extending through-angles 9, so that the rear wall 5 may thus be adjusted throughoutthe length of slots 11 at each end and then fixedly secured, for varying the amount of cubical contents of the measuring box. is shown in Fig. 3. i The rear walls 5 are provided with cover plates 13 of angle form, securedto the opposite ends of the wall 5, as inFig. 4, andv close the slots 11 against escape of material I therethrough in anv position of thewall.

A cut off plate 1 4 is adjustably connected by its terminal angles 15 and slots 16 there-, through and bolts 17, so that the plate 14: may be set inwardly or outwardly alimited degree, to adjust it to proper cut-off relation-- ship with the delivery end of hopper A, as it is swung to-a delivery p0sition,;to terminate thefiow from the hopper, as in 3.

The measuring box as a whole is pivotally mounted by its middle cross shaft 18, extend} ing throughthe end walls and'hubs 19 there, of into supporting bearings 20, depending from framing timbers 21 of a building or the Such adjusted position v like. The measuring box is. provided with one or more operating handles 22 secured to one or both of the end plates,-,by which the measuring box may be tilted. Y

The construction and operation of the-invention'willbereadilyunderstoodandappre ciated by all those familiar with the making and use of concrete aggregateor similar materlals.

When in registering position, as in Fig. 2,.

the raw material will flow by gravity from the hopper, and will fill the box from the bottom shelf 2 upwardly to its top, sloping approximately'from each lower edge of the hopper terminal at an angle of about 45,

as in usual mineral distribution. When thus filled, the measuring box 1s shifted with its open bot-tom i wardly over across the shelf 2 of mixer B, while the top, at the same time, is shifted in the reverse position, bringing the cut-off plate 14 underneath the hopper opening and effectually closing off further supply.

The contents will immediately fall by gravity into the mixer, whereupon the box will be shifted back to receiving position, the operation being repeated periodically as often as desired.

The adjustable wall 5 may be accurately set to vary the desired contents of the box, so that'at each operation a definitely known amount is delivered. The upper end of the measuring box being open, as'sho'wn, gives ample opportunity for observation by the operator to see when it is full, and the material will not overflow because of the natural teri'nination of the flow upon being filled.

lts construction is simple and compact, and requires comparatively little height above the mixer when used to measure aggregate or cement and-deliver the measured material thereto.

It is comparatively simple and cheap in construction and easy to operate, having no small partsto become damaged or worn.

The adjust-ability to difiere'nt capacities and its low cost of manufacture are further advantages, while it is self-cleaning and not apt to contain anyradhering material when emptied.

The bottom shelf 2 being attached in forming a part of the mixer B,receives a. certain amount of transmitted vibration from the mixer itself, assisting the material in settling and packing. thus ensuring uniform. con sistency and definite equally measured amounts.

The invention may be changed or varied in different detail construction, or in size and capacity to adapt it to varying conditions of use, but all such changes are within the province of the skilled mechanic, and are contemplated as within'the scope ofthe following claims.

hat I claim is:

1. The combination with an upper open bottom hopper and a lower receiving casing having a laterally extending material sup porting shelf, of an interposed pivot-ally mounted measuring box having an adjustable side wall, a cut off gate for the hopper and-a continuously open bottom, and means for shifting the measuring box on its pivotal mountingto move contained material from direct supporting engagement with the shelf to the casing.

2. A measuring box for the purpose described consisting of endplates, intervening side plates, means for adjusting one of said side plates, an upper adjustable cut ofi gate extending between the end plates for controlling supply to the box, a pivoting shaft for tilting movement of the box thereon extending beyond the end plates at each end, and a shifting lever for he box.

3. In a measuring box of the class vdescribed, the combination with end plates, a side plate connecting the end plates. an opposite side plate pivotally mounted between the end plates and having adjustable connection with the end plates, an upper cut off gate extending between the end plates for controlling supply to the box, a supporting sh aft extending endwise through the box for tilting movement thereon, and an operating lever secured to the measuring box.

4. The combination-with an upper open bottom hopper and a lower receiving casing having a laterally extending supporting shelf, of an interposed pivotally mounted measuring box open at top and bottom having atits top an independently adjustable cut-off gate movable with and mounted partly across the upper portion of the box between its sides and means for shifting measuring box and its cut-off gate on the pivotal mounting to move contained material from supporting relation witlrthe shelf to the casing while moving the cut-off gate beneath the hopper bottom.

5. The combination with an upper open bottom hopper and a lower receiving casing having a laterally extending material supporting shelf,- of an interposed pivotally mounted measuring box open at top and bot tom consisting of end plates, a fixedly connected side wall, an opposite inwardly and outwardly adjustable side wall, a cut-off gate for the hopper, and means for shifting the measuring box on its pivotal mounting to move contained material fronidirect supporting engagen'lent with the shelf to the casing;

In testimony whereof I hereunto affix my signature.

FRANCIS J. STRAUB.

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