US792982A - Automatic weighing-machine. - Google Patents

Description

No. 792,982. PATENTED JUNE 20,' 1905.

I J. HABBERLE. AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED 0015,1904.

2 SHEETS-SHEET 1.

wt 56 s in? 7512 '7" we ozannf fiaarzg PATENTED JUNE 20, 1905.

J. HAEBERLE.

AUTOMATIC WEIGHING MACHINE.

APPLICATION FILED 0015,1904.

2 SHEETS-SHEET 2.

UNITED STATES Patented June 20, 1905.

JOHANN HAEBERLE, OF GRODZISK, RUSSIA.

AUTOMATIC WEIGHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 792,982, dated June 20, 1905. Application filed October 5, 1904. Serial No. 227,489.

To 11/ 7071/07)? it may concern:

Be it known that I, .IouANN HAEBERLE, merchant, a subject of the Emperor of Russia, residing at (irodzisk, in the Empire of Russia, have invented new and useful Improvements in Automatic \Veighing-\Iachines, of which the following is a specification.

My invention relates to an automatic weighing-machine more particularly adapted for flour, cement. and other pulverulent or granulated material.

The main features distinguishing this machine t'rom prior apparatus of a similar class are that it is able to weigh finely-powdered substances, such as flour, with the greatest exactitude and that the weighing is executed with the utmost rapidity. For this purpose the inlet-door is so arranged that it remains fully open throughout the entire charging operation, while on the desired weight being reached its wings are released by a slide, so that the door rapidly closes, the said slide following the descending weighing-pan and on a delinite position being attained striking against a stop. Immediately the door closes the discharge-flap of the weighing-pan opens, the pan very rapidly empties, and then rises again, the .lischarge-flap being simultaneously closed and the inlet-door being again opened. The door consists of two curved wings which pass through slots in the walls of the charging-pipe. ()n opening the door the edges of the slots strike oil any flour which may adhere to the wings. The cross-section of the charging-pipe does not diminish toward the bottom, so that the flour cannot adhere to the wall. In conjunction with the door stop devices are provided to maintain the door-wings in open position. One. or more arms of the stop devices extend into the path of a stop provided on the slide, which stop engages the arms in a delinite position of the pan and ettects release of the wings.

In the accompanying drawings, Figure 1 is a side elevation and part section of the weighing-machine, and Fig. 2 is a horizontal section of the chargingpi1 )e with inlet mechanism. Fig. 3 is a detail view.

The charging-pipe .2, which is of the same cross-section throughout, is secured to the frame of the apparatus and is provided with two pins 71 7/, which serve to guide a slotted slide a. The latter is furnished at the bottom with a stop m, which in its descent rests on a projection 22. on the pan 0. Pivoted to the slide a at c c are two rods (Z, which are slotted to receive the pins a projecting from two symmetrically-located yolzes f pivoted at to the charging-pipe These two yokes 7" carry the cylindrically-bent halves or wings constituting the trap-door /L, which wings enter slots in the walls of the pipe .2, so closing the latter. Above the pins other pins l are provided on the pipe-walls, and on them turn the catches 2', which in the highest position of the door-wings /1 --that is to say, of the yoltes f-seize the pins (1, thus retaining the wings /t in the open position. The catches vi extend beyond the pins Z and these projecting arms are slotted and are connected by apin Z. At the top of the slide (I. is a pin 1, which on the downward motion of the slide it bears against the pin 7.? until a certain position is reached, whereby the catches 2' are brought out of their 'fullline position, Fig. l, and thus released fromthe pins (2. The pan 0 is suspended at one end of the beam n, at the other extremity of which the weight w is hung. The bottom of the pan is closed by a counterweighted flap 7), which is still further secured by a latch r.

The latter is pivoted at r and its upper limb is controlled by a spring 2%.

Referring to Fig. 3, it will be seen that the semicircular part of the notch in arm viis prolonged by straight faces, which stand at an angle against a horizontal plane when the catches are in the lowermost position. (Shown in full lines in Fig. 1.) The arms f in leaving the position shown in Fig. 1 would have to rotate about the pivot-pins g, which rotation, however, is prevented by the straight faces in the notches of the catches, and thus the door-wings 71/ are retained in open position. In order to show this operation the clearer, in Fig. 3 the straight face on the notch of the catches is somewhat exaggerated.

In filling the pan 0 the wings it occupy the full-line position, Fig. 1, so that the material falls unimpeded through the pipe \Vhen the weight of the material is such that it com- IOC mences to overcome the weight w,the pan 0 will sink and the slide a will follow such downward motion without the wings it closing at first. As the pan continues to sink, however, the pin Z will finally strike the pin 1 6 whereby the inner arms of the catches 9} will be pressed downward, so that the catches will be released from the pins 6; The wings 72, will now enter the pipe 2 and will rapidly close it. This is done at the moment when the material has reached the desired weight. Owing to the pin l striking the pin the slide a is retained for a moment. ()n release of the catches z, however, the slide a can again descend farther, whereby the pan 0 receives a slight blow. The purpose of this shock is to insure certain release of the latch 0 On the desired weight being reached the arm 8 reaches the projection u. Under certain conditions, however, the weight of the pan 0 and of the contents is not sutficient to cause the descent to continue so far that by the arm 8 striking the projection a the springt is overcome. It is sometimes only when the slide a imparts the said further shock or in consequence of the increased load hereby resulting that the spring 26 will be pressed back under any conditions, so that the latch a" is released from the fiapp. The result of this release is that the flap p is depressed and the pan is rapidly discharged.

Immediately the discharge has taken place the flap 1) will close, the weight 20 will elevate the pan 0, the slide a will also rise, and finally the rpds (Z will engage the pins 0 and the door It will open. The shock which is thus occasioned will cause any particles of flour which may be adhering to the mechanism to be shaken off. In the highest position the catches again seize the pins 6 and retain the door-wings it in the open position. During the ascent of the pan 0 the arms 8 of the latch 4' will be again released from the projection a, so that under the action of the spring t the latch rwillagain engage the closed flap p. The pan 0 will now be again charged, and thus the weighing goes on uninterruptedly. A counting mechanism may be provided in conjunction with the balance for the purpose of registering the weight of the material.

In the particular construction of machine shown devices are also provided for avoiding shocks. The weight-tray rests on a buffer device 3 which on descent of the weight-tray takes up any shocks. A second beam :0 is also provided, supported at one end by the wall of the pan 0 and at the other end guided by the bow of the weight. By this means the upand-down motion of the weight-tray is rendered exceedingly quiet.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an automatic weighing-machine, in combination, a slotted charging-pipe, doorwings pivoted thereto and passing through the slots of the pipe, a vertically-reciprocating slide working against the wall of the pipe, rods linking the slide to the wings, catches carried by the pipe and retaining the wings in open position during the filling of the pan, and means for releasing the catches after the slide has descended a certain distance, substantially as described.

2. In an automatic weighing-machine, in combination, a slotted charging-pipe, doorwings pivoted thereto and passing through the slots of the pipe, a vertically-reciprocating slide working against the wall of the pipe, rods linking the slide to the wings, doublearmed catches pivoted to the pipe and connected at one end and retaining the wings in the open position during the filling of the pan, and a stop on the slide releasing the said catches on contacting with the same, substantially as described.

3. In an automatic Weighing-machine, in combination, a slotted charging-pipe, doorwings pivoted thereto and passing through the slots of the pipe, a vertically-reciproeating slide'working against the wall of the pipe, rods linking the slide to the wings, doublearmed catches pivoted to the pipe and connected at one end and retaining the wings in the open position during the filling of the pan, a stop on the slide releasing the said catches on contacting with the same, a pan located below the pipe, presenting a stop below the slide and having a flap-bottom, a spring-latch controlling said flap, and a member on the machine-framing releasing said latch on descent of the pan and closing of the pipe-door, substantially as described.

In witness whereof I have hereunto signed my name, this 19th day of July, 1904:, in the presence of two subscribing witnesses.

J OI-IANN HAEBERLE.

WVitn esses:

F. OEMUT, F. TAURIK.

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