US1999120A - Tobacco spreader for rod cigarette making machines - Google Patents

Description

A. WERNER April! f: 1935 TOBACCO SPREADER FOR ROD CIGARETTE MAKING MACHINES Filed Nov. 10, 1952 INVENTUR= Patented Apr, 23, 1935 UNi'i TOEACfiO SPREADER FQR R01) CIGARETTE WEARING MACHINES Albert tVerner, Dresden-A, Germany, assignor to Universelle Cigarettenrnasohinen-Fabril: .ll. 6'. Muller & 00., Dresden, Germany Application November 10, 1932, Serial No. 642,115 In Germany September 14, 1932 5 Claims. (Cl. Trill-39) In tobacco spreaders for rod cigarette making veyor belt or a paper strip is which in known machines, it has already been proposed to im manner is carried over a roller 70 The finished part to the tobacco descending through the derod is shown at m in Figure 1. The cavities livery hopper into the rod trough a movement formed in the lateral walls of the rod trough e 5 in the direction of feed of the rod, inter alia by and f are connected by supply pipes 12 and n 5 arranging compressed air nozzles on the Walls of respectively, to a compressed air conduit 0. In the delivery hopper, the said nozzles opening into addition, the inwardly directed walls of the parts the hopper and being set in the direction of feed 6 and are provided with bores 29 which, as shown of the rod. In the known type of such tobacco in Figures 2 and 4, pass through the walls hori- 10 Spreaders, the compressed air nozzles extend alzontally but obliquely in the direction of feed of 1 most over the full height of the hopper. Consethe rod. A throttle valve q, provided in the comquently, the tobacco is under the influence of pressed air supply conduit 0, is rotatable about the compressed air for a relatively large distance a spindle q and is connected by a pull rod r of fall, resulting in the production of eddies in the to the stopping device for the machine in a mandelivery hopper which occasionally prevents a ner not shown in the drawing so that, on stopuniform descent of the tobacco. ping the machine, the throttle valve is brought It is the object of the present invention to 010- into the closed position shown in the drawing,

viate this disadvantage. For this purpose, acwhile it is opened on starting the machine. Since cording to the invention, the compressed air nozthe front wall of the tobacco channel I is adapted zles for supplying a r are arranged only at the to turn about the hinge pins i the air conduit 20 lower end of the delivery hopper. The air is n of course must also be hinged. For this thus introduced into the chamber uniformly in reason, the conduit will preferably be made in all points, so that it is impossible for larger or the form of a movable pipe.

smaller air velocities or eddies to be set up any- The holes p do not extend over the entire length where. of the channel, but, as shown in Figure 1, the 2 In order to prevent air entering the tobacco part situated towards the outlet end is free from channel and acting upon the tobacco situated such bores. I In order to prevent the air from bethere while the machine is stopped, provision is ing obstructed at the outlet end of the tobacco made at the same time for the compressed air to channel and flowing upward and consequently Cil be shut off when the machine is stopped. deflecting the descending tobacco from its proper 3-.)

A constructional example of the invention is direction, the walls of the tobacco funnel at this shown in the accompanying drawing, wherein: end are not made vertical in the usual manner, Figure 1 is a front elevation of the tobacco but, on the contrary, a sloping part 3 adjoins spreader with the adjoining delivery channel. the vertical lateral wall. The said part slopes Figure 2 is a plan of Figure 1 partly in section. downward in the direction of the tobacco rod. 35

Figure 3 is a diagrammatic side elevation of of course, the manner of carrying out the inthe device, and vention may be different in its constructional de- Figure 4 is a section through the lower part of ,115. the delivery pp On a a er cal In other respects, the operation of the device h tobacco fleece is pp y a v y r is known. The tobacco first descends through 40 belt a which runs over a roller 79. The tobacco th hopper c in the usual manner, and as soon f ls ff h nv y belt a into h h pp c as it enters the tobacco channel it is deflected which opens into the rod t ou h. In the Constrllcinto the feed direction by the currents of comtional eXample W the a d t o is pressed air entering therein. The compressed a suitable gap and on which is mounted the hopir acts upon the tobacco only while the ma- 45 formed of two parts 6 and between which is left hine is running, and on the machine being per 0, as will be seen more particularly in Figure stopped, the compressed air is shut off.

4. The two parts e and f are constructed in the I c1 im;- form of hollow bodies and are closed outwardly by 1. A tobacco spreader for cigarette rod ove p a s 9 a respectively The p I chines, comprising a delivery hopper for the to- 50 s Secu ed y two hinges i to the machine frame, bacco having imperforate walls, a rod trough on so that it can be turned forwardly about the pins the l wer end of the hopper, and compressed air 11 of he ai hin f r rendering h n i r f means including a plurality of air nozzles solely the 1 1 6 c s The lower Closure in said trough to impart thereby a movement of h r of the rod r u h is on u y a 00 the tobacco in the trough in the direction of feed of the rod and to prevent eddy currents in the delivery hopper.

2. A tobacco spreader according to claim 1, said plurality of air nozzles being provided in the trough along a certain distance thereof, and the remaining length of the trough at the outlet end thereof being free of any nozzles.

3. A tobacco spreader according to claim 1, in which at least a part of an end wall of the delivery hopper, at the outlet end of the tobacco trough, slopes downwardly in the direction of the cigarette rod.

4. A tobacco spreader according to claim 1, said trough consisting of two walls in the form ALBERT WERNER.

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