US1903526A - Apparatus for reducing paper stock - Google Patents

Description

April 11 1933.

H. J. ANDREWS APPARATUS FOR REDUCING PAPER STOCK Filed April 11, 1927 anoemboz Patented Apr. 11, 1933 UNITED STATES HENRY J. ANDREWS, OF, FORT WAYNE, INDIANA,

TO BLACK oLAwsoN ooiurANY, or HAMILTON, OHIO, Aconronnrron on OHIO,

.AIBPARATUS non REDUCING EATER s'rocx Application filed April 11,

series with means for conveying the reduced stock from one machineto the tub of the next adjacent machine. Fundamentally ieach machine consists ofa tub or container for receiving the paper stock together withthe necessary water or other liquids used in the process a of production'together with a receiver for the reduced stock which is delivered by centrifugal force to a perforated member through which the stock protrudes and is removed and deposited intothe receiver.

This invention contemplates means for conveying the reduced stockfrom the receiver of one machine to the tub of another machine where this stock is again subjected to the action of the tub beater and the reduced stock again collected in the receiver. As a. consequence of this arrangement stock may be placed in the first machine whereupon the reduced stock is collected and conveyed to the tub of the second machine whereupon the reduced stock is collected and conveyed to the tub of a third machine, etc., it being practical to provide as many tub beaters as found necessary, desirable or expedient. Thus the re duced stock delivered by each successive beater is correspondingly of a finer texture so that the grade of stock finally obtained may be governed by the number of machines connected in a series. p

This invention has also as an object the provision of a mechanical conveyor with each tub beater for the purpose of removing the reduced stock from the receiver irrespective of whether a plurality of tub beaters are used or not.

The several obj ects,advantages' and novel details of construction of this invention will be made more apparent as this description proceeds, especially when considered in con- I a pulley 1927; Serial No. 182,862;

AssrGNoR, BY MESNE ASSIGNMENTS,

nection with the accompanying drawing wherein v Figure 1 is a sectional elevational view of an apparatus constructed in accordance, with this invention, and

Figure 2 is an end elevation partly in section of the apparatus. -c a Referring now particularly to the drawing whereinlike reference characters indicate like parts it will be noted thatfl have illustrated three paper stock reducing, machinesor tub heaters 10, 11, and 12. While these machines may be of any desired type or. construction, the type herein illustratedand described is substantially similar to that type illustrated in United States-Patents No. 1,244,144 granted October 23,191'7to- C. W. Unkle and T, D". Griley and No. 1,547,848 granted July 28, 1925 to C; W. Unkle. Inasmuch as the details of construction-of the type 1 of 1machine herein illustrated are described fully in theaforementioned patents itis only,

necessary herein to mention that each ma-j' chine includes as a part-thereof a tub 13into which the stock t'o be reduced, together with, the necessary water and other liquids used in thepro'cess, are placed. Each machine also 'includesa hood 14' within which arotary beater (not'shown) isarranged which throws the stock by centrifugal force against a perforatedportion 15 of the hood. This pers foratedportion has associated therewith a stockremove'r which consists of a plurality of plates 16 adapted to be reciprocated between guides 17 bymeans ofarod 18; 'The rod- '18 is reciproc'ated by a pitman 19 carry-' ing a pin 20 working inthe slot ofa member '2Lcarried by the rod: 18. Pitman 19 is'operated by an arm 22 rotated by a wormwheel '23 driven-by a worm24" on a shaft driven by 25 may be-driven by a belt 26 which engages a pulley'27 on a shaft 28; This shaft pref; erably extends transversely through" the machine and' carrieszthe beater roll (not illustrated) A driving pulley 29 is mounted upon the other end ofthe shaft whereby the parts may be driven as will be obvious. Thereduced stock which protrudes through the aperturesin the;perforated,portion glfi 25. As seen from Figure 2-,.pulley V of the hood, is freed by the reciprocation of the plates 16 and is deposited in a gutter or receiver 30. The receiver is provided with an extension or conduit 31 extending therefrom which is provided with a branch conduit 82. The branch conduit 32 of each conbelt. It will be obvious, however, thatany desired means for driving the conveyor may be provided. It will likewise be obvious that anyother type of mechanical conveyor may be utilized as well as any other type of means which will eiiect the transfer of the reduced tub of the next. V I

' In the structure herein illustrated, it will be obvious-that the reduced stock deposited in the receiver 30 of the first machine 10 will stock from the receiver of one machine to the V be moved from the receiver through the conduit 31 and will then pass through branch conduit 32 to-the tub of machine 11. The stock will then be acted upon in the customary manner by this tubbeater whereupon a still greater reduction of the stock is obtained and this finely reduced stock delivered to the receiver 30 of this machine whereagain the conveyor transfers the same and deposits it to the tub of machine 12 where the process is repeated. It will be immediately obvious to those skilled in this art that any number of machines may be connected in series and that 'the'texture of the stock will becomeincreas ingly fine depending upon the number of machines through which the stock is passed. The stock may be collected at theend of the conveyor beyond the last machine.

Obviously the herein described apparatus may be used to advantage with single tubbeaters for positively and quickly re-' moving the reduced stock deposited in thereceiver. I

While one embodiment of the invention has been illustrated and described herein somewhat in detail it will befreadily appreciated by those skilled in this art that various changes may be resorted to involvingn'ot only the substitution of other types ofpaper pulp reduc ng machines but also any type of con-' veymg apparatus and to this endreservation' is made to makesuch changes in the specific construction illustrated as may come within the purviewof the accompanyingclaims. a What I claim as my invention is r 1. In an'appa ratus for reducing paper stock, 'a plurality of tub beaters having aligned'screen elements, the screen elements having a continuous chute commoirto all the conveying beaters, said chute having outlets for the pulp screened from one beater leading into an adjacent beater.

2. In an apparatus of the character described, a plurality of tub beaters having a series of screen elements, the scrieen elements having a continuouschute common to 1 all the beaters, said chute having outlets for the pulp screened from one beater leading and depth of impressions formed thereby inpulp conveyor in said chute.- v

3. In an apparatus for reducing paper stock, a pluralityot' tub beaters arranged adjacent: one another in a series, said tub beaters having a series of aligned hood screens arranged adjacent a continuous receiving passage having outlets for the pulp screened from one beater leading into an adjacent beater and a mechanically operated pulp conveyor in said passage. V

4. In a continuous system of pulp prep aration, a plurality of beater engines ar-,

ranged side by side in a seriesat a common level and each including a beater roll si-. multaneously discharging coarse and fine pulp material from. the periphery thereof, a substantially horizontal trough and a continuous mechanical conveyor therein, said CERTIFICATE 0F CORRECTION.

Patent Ne. 13 33526. April 11, 1933.

HENRY J. ANDREWS.

it is hereby eertified that error appears in the printed specification of the above numbered patent requiring eerrection as follows: Page 2, iine 75, claim 2, strike out the Words "and depth of impressions formed thereby in" and insert instead inte en ariiaeent heater, and a meehanieai"; and that the said Letters Patent shoniti he read with this correction therein that the same may conform to the reeerti at the case in the Patent Office.

Signed and seeied this 23rd day of May, A. D. 1933.

M. J. Moore.

(Seal) Acting Commissioner of Patents.

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