US1791574A - Delinting device for drying machines - Google Patents

Description

Feb. 10, 1931. R. c. PAULY DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14. 1925 4 Sheets-Sheet 1 Z 50 1%vg1% TOR A TTORNEY J Feb. 10, l931. R. c. PAULY 1,791,574

DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 "4 Sheets-Sheet 2 IN VEN TOR BY M Feb. 10, 1931. c, PAULY 1 ,791,574

. DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 4 Sheets-Sheet 3 I i i l l Mir-11m i l5;/ t L [NIZ'AOR My I BY Maw: I

' k if ATTO \NEYJ Feb. 10, 1931. R. c. PAULY 1,791,574

DELINTING DEVICE FOR DRYING MACHINES Filed Sept. 14, 1925 4 Sheets-Sheet 4 79 5/ i Q TWQ 50 v AT ORNEYJ Patented Feb. 10, 1931 E TA T .8

ROBERT .C. PAULY, OF CINCINNATI, OHIO, ASSIGNOR TO THE AMERICAN LAUNDRY EQACHINERY COMPANY, OF. CINCINNATI, OHIO, A CORPORATION OF OHIO IDELINTING DEVICE FOR DBYlNG IYIACHIITES Application filed September 14, 1935. Serial No. 56,336.

This invention relates to improvements in delinting devices for drying machines used in connection with laundry, etc.

One object of the present invention is to provide such a device in which the delinting means is entirely enclosed within the casing and in which means is provided for re- -moving the lint from the lint-collecting screen and depositing the lint in a container from which the lint may be removed from time to time as may be necessary.

More specifically, it is the object of the present invention to provide a traveling wiper or wipers which are adapted to engage the lint-collecting screen so as to deposit the lint into a container for removal.

Still more specifically, it is my object to provide such a wiper or wipers which are adapted to co-operate with other means so as to cause the lint to become packed in the container and at the same time to prevent the lint from being carried past the container and throu h the machine.

It is another object to provide a number of such wipers upon an endless traveling chain so as to have at least one of them always in wiping engagement with the screen, and also to provide means for adjusting the individual wlpers so as to always effect proper wiping engagement with the screen.

A further object of this invention consists in providing means for automatically producing a signal to indicate when the lint collector or container has been filled and to provide also means for automatically stopping the operation of the fan of the drying machine as well as the movement of the wipers in case the signal just referred to should go unheated and the lint should be permitted to collect still further in the container.

Another object consists in providing means for preventing formation of pockets within which the lint might collect and in this way fail to be removed. A still further object consists in providing means for preventing collection of lint upon the sprocket wheels of the chain which carries the wipers.

Other objects will appear from. the following description and claims when considered together withthe accompanying drawings.

Fig. l is afront view of my improved device with parts broken away; Fig. 2 1s a detail view showing one of the wipers and also one of :the'plates to prevent collection of the lint withina pocket or corner of the machine; Fig. 3 is a detail View showing the manner of mounting the wipers upon the sprocket chain; Fig. 4 is a detail view illustrating the wipers for preventing collection of lint upon the sprocket wheels; Fig. 5 1s a vertical cross sectional view of the entire device showing the relative arran ement of the several Jarts h 7 Fig. 6 shows the wiper felt in perspective withthe slot for permitting adjustment; Fig. 7 is a detail view of a deflector plate arranged at the door of the casing so as to prevent escape of lint therefrom Figs. 8 and 9 are detail views taken at 90 to each other and showing theoperating mechanism for the sprocket chain which carries the wipers; Figs. 10 and 11 aredetail views taken at 90 to each other and illustrating the means for automatically signalling the operator and stopping the 0perationof the entire device; and Fig. 12 is an electric diagram of the automatic signalling and stopping arrangement.

The drying machine here illustrated includes a casing 1 provided with the door 2 hinged across the front thereof so as to permitaccess to the machine interior. Arranged within a suitable chamber within the casing 1 is a tumbler in the form of a screened cylinder which is adapted to be rotated by an electric motor 3 (shown in Fig. 12) in the well known manner and in which are con tained the materials to be dried.

The casing is subdivided by suitable partitions, as indicated in Fig. 5, forming a heating chamber-5 within which the heating coils shown a-re'located, a fan housing 66 enclosing the rotary fan 6 which is arranged to deliver air into .the heating chamber 5, an air inlet chamber 60 and an exhaust chamber 8. The air inlet chamber 60 communicates with the fan chamber through the usual endwise opening (not shown), and said fan chamber also communicates by way of a relatively small opening with the exhaust chamber 8. By this construction, which will be recognized as old in the art a recirculation circuit is established by operation of the fan, air p nn; from the fan housing 671, through ing chamber 5, up around the tuinbn ing, dowmvardly through the openin 3a above the tumbler. through the tumbler, downwardly through the outlet opening 31) in the tumbler housing, downwardly through the screen 7 into the air inlet chamber and thence again endwise into tl e fan housing 67). A relatively small portion of the recirculated air will be continuously exhausted by way of the exhaust chamber 8 and approximately a corresponding amount of fresh air will be continuously drawn into the chamber 60 through the opening Go, all as will be readily understood by one familiar with the art.

Extending across the entire width of the machine casing and located just inside of the front of the casing, there is provided an inclined deflector plate 10 having its lower edge portion bent to an angular form and suitably secured in such position. The upper edge portion of this deflector plate is provided with the felt strip 11 which engages the innersurface of the door 9 so as to thereby prevent escape of lint out past the door and at the same time to serve to deflect the lint into the zone of the screen 7 so as to be all caught thereby in the manner intended.

As a means of operating the fan and wipers, there is provided the electric motor 5 with the belt 13 which by means of suitable pulleys drives the shaft 14 extending across the front part of the machine casing at the bottom part thereof. The fan 6 is mounted upon the shaft 14 so as to be d iven thereby, while the other end of this shaft extends out beyond the main part of the machine casing so as to drive other mechanism which is enclosed within an auxiliary casing and which includes shaft 17 This shaft 17 carries the worm 18 meshing with the gear 19. Mount ed upon the shaft of the gear 19 there is provided the sprocket 20 which by means of the sprocket chain 21 drives the gear 22 and the sprocket 23 which is mounted upon the shaft of the gear 22. Mounted within the casing and at the opposite or left hand side thereof there is provided the idler sprocket 24 which is companion to the sprocket 23 and about which there extends the sprocket chain 25 so as to be driven by the mechanism just now described. This sprocket chain 25 extends just above the screen 7 and carries the felt wipers I 26 which are so constructed and arranged as to have effective wiping engagement across the entire upper side of the screen 7 during operation of the mechanism just referred to. Any desirable or suitable number of such wipers may be employed, but according to the present illustration there is provided just a sufficient number of such wipers to always have one of them in engagement with the screen. The lint upon being removed by the wipers is deposited into the container 27 which is slidably mounted just beyond the end. of the screen 7, as shown in Fig. 9.

There is provided also across the top of the container 27 a member having an upwardly inclined lip portion 28 which is adapted to be engaged by the wipers 26 so as to ensure the lint being discharged or deposited into the container and not carried past the container, and scattered through the machine. The effect of such engagement between the wiper and the lip 28 is to also cause more or less packing of the lint within the container.

The s iroeket wheels are slidably mounted by s of the blot-as and slots illustrated in F1 2, as to be slidably adjustable in the ii porting brack 29 which are suitably mounted on the inner wall of the easg. By means of set screws 30 which e2:- tend through the bra ekets 29 and engage the idablc blocks upon which the sprocket wheels are mounted, there can be effected any necessary adjustment of the sprocket wheels as to maintain the proper degree of tardiness in the spree ct chain. Rockably in ed upon the aux ry casing 15 is the bracket arm which carries the idler sprocket 555 to serve as a take-up for the slackness f the sprocket chain lilounted also upon bar 29 of the bracket 29 are the ow felt strips which are so arranged on: e the opposite sides of the sprocket and in this way prevent accumulalint between the teeth thereof. These 31 felts may be mounted in any suitable ner, for instance by means of angular strips 32 and the plates 33 upon the opposite sid s thereof. lhe felts 26 are mounted upon the sprocket chain by means of inwardly extending bracket arms which are cured to the links of the same, as illustrated in 3, and Ul Cll are adapted to support at their inner ones the angular strips 35 between which the wiper felts are clamped by means of screw bolts 36. The felts a re slotted, as illustrated at 3"? so as to permit adju tment of the same to take up wear, this being readily accomplished by means of the screw bolts 36. The resilient metal s ieets 38, which are secured upon the one side of the felts by means of the same screw bolts 36., will bend and thus during operation of the device will ensure uniform and effective engagement of the felts with the surface of the screen. The sheets in this case are of sufficient resilience to maintain the felt vipers normal to the chain when they are idle.

The shaf 39 extends across and is mounted within the container 2". at a point near the bottom thereof and to one side so as to have rockahle movement therein. This shaft has lxed thereupon the bottom plate or shelf 40 of the electric light 52 which is adapted to o v operated as a signal when the weight oi th which is adapted to he swung downwardly when the load in the container reachesa certain predetermined point. T 1e adpistable springs ll are arranged between the downwardly extending projections on t e ear-- or" shaft 39 and the wall of the ccinai llv force the nv M ough one openiug e in the wall of the container is the arm or rried by the plate other U v i I Z- llilu. anangcdso as LO have i end engaging under the arm whicn of which are provided the electric contacts 49 and 50 respectively. The inner or ad jacent ones of me two corresponding pairs of contacts-49 and 5O are connected by means of electric conductor 51.

The contacts L9 are included in the circuit load in thelint container'reaches a certain predetermined point. This is effected by depression of the plate 40 so as to etlect closing or" the circuit through the contacts by means of the mechanism just now described. In case howeversuch signals should not he heeded by the operator, who permits the device to continue operation'and the lint to still collect in th container, then turtl er lowering movement of the plate l0 will cause the further roclrin movement of thearm 45 so as to close the circuit acrosstne contacts SO -by means of the contact arm 50, automatically cutting out and stopping both or" the motors will he more thoroughly understood by reference to the' ele'ctrical d1- agram in Fig. -12.

Referring to Fig.12, it will he seen that upon momentary depression oi the switcl button 53, there will he completed a circuit from the main line L through the wire 54, switch 53, wire 55, switch 56, wire 5?,switch 58, coil 59 and out through wiretJO to the other side-ofthe main lineL2. 'Upon' energization of the coil 59,-theci-rcuit-isclosed through contacts 61 and 62. Then the-circuit through the motor 63 i completed from the main line L through the wire 6%, switch 62, wire 65, driving motor 3% wire the other side of mainline L At the same time a maintaining circuit is closed from one side of the main line L"through the wire 64-, contact'62, contact 61. wire 6?, switch wire 5?, switch 58, coil 59, and out through wire 60 to the other side of the main lineLFZ. Thus without holding the switch closed any longer than momentarily, the circuit throw driving motor 3a is established and main- 'tained closed so long as maybe desired by the operator or until the motor circuit is automatically opened bymeans ofthearrangeuncritahove referred'to. The circuit may of course he opened at'any time by the operator hyineans oi manualswitch 56.

Likewise the fan motor 5o may be started by depressing momentarily the switch-'69 so 13 to close the circuit from the main line L through'wire 70, closed switch 69, wire 71, closed switch 72, wire 73, closed switch 74, wire 75, coil 76, and out through the wire 7 7 to the'other side of the main line L2. Energization of coil 76 will effect the closing of switches 7 8 and 7 9 with'the result thatthe circuit through motor 5a is closed from the one side of the main line L through the wire 80, closed switch 7 9, wire 81, motor 56; and through the wire 82 to the other side of the main line L2. Likewise the maintaining circuit is closed from the one side of the main line L, through wire- 70, closed switch 69, wire 71, wire 83, closed switch 78, coil 76, and through wire 77 to the other side of the mainline L2. The operation of motor 5a may also lie-interrupted at any time by manually opening switch 69.

During operation of the lint removing device in case the bottom plate 40 should be actuated by the weight o'fthe lint, the circuit through contacts 49a willthen'he con pleted and there will he established the circuit from the'one sideof the'main'line L,

throughwire 84, closed contact-s 49a, wire 85, and through the lamp 52to the other side of the main line L2. Then in case this'signal is not heeded by the operator who fails to empty the container, the accumulation of further'weight of lint upon the plate 4:0 will cause actuation of the arm 48 so as to'completethe'circuit across the contacts'oO Then thereis established the circuit from one side oft-he main line L through wire '84, one of contacts 49, electric conductor 51, closed contacts 50a, wire 86, coil 87, and out through the wire 88 to the other side or the main line The 'energization of coil 87 causes switches 58 and 74 to both be operated'automatically, with the result'tha't the maintaining circuits through coils 59and 76 are both broken, andconseque'ntly the circuits through hoth motors 3 and 5 are'also br'okenfa's will be readily understood. Thus the machine is automatically stopped in its operation to await removal an'd emptying ofthe lint container. l Vith the empty container restored to position in'the machine, the plate 40 will occupy horizontal position, as illustrated in Fig. 11.

Thus I have'provided a lint collecting and dlscharging device which, except for the contamer, and drlvlng mechanism is entlrely enclosed Xvithin the machine casing and in which the lint is effectively'and continuously removed from the screen during'the operation of the machine. This lint is deposited in an etticient manner in a removable container and means are provided for automati-cally i (m ruu rsignalling the operator when a certain amount of but has been so depos1ted. Furthermore,

the machine will automatically be stopped in case attention is not given to the emptying of the container at such time. Furthermore, I have provided an improved wiping device for removing the lint from the screen with means for adjusting the several parts and thereby increasing the efficiency. By keepm the screen clean, there 18 maintained an efficient circulation of air with the result that the drying of the materials is carried on most effectively, throughout the entire operation of the machine. This uniformity of treatment makes possible the obtaining of best re :sults.

Likewise, I have provided means for preventing accumulation of lint within thecor ners or pockets of the machine casing and means also for preventing escape of lint out- :side of the casing. Thus besides providing passed into the heating chamber without the detrimental result which is produced in some of the present forms of such devices.

What I claim is:

1. In a structure of the character described,

the combination of a chamber having an outlet through which lint laden air is adapted to be passed, a lint storage reservoir having a mouth at its upper end, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for transferring lint from said collecting means toa point above the mouth of said stor age reservoir, whereby said lint will fall by gravity into said reservoir, and means above said reservoir mouth and adapted for cooperative engagement with said transfermeans for insuring the removal of lint therefrom.

2. In a structure of the character described, the combination of a chamber having an outlet through which lint laden air is adapted to be passed, a lint storage reservoir, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for delivering lint from said collecting means to said reservoir, means for indicating when a predetermined quantity of lint has been stored in said reservoir, and

means for automatically operating said inclicating means.

3. In a structure of the character described, the combination of a chamber having an outlet, means for producing a flow of lint laden air through said outlet, a lint storage reservoir, means arranged in the vicinity of said outlet for collecting lint from the air passing therethrough, means for delivering lint from said collecting means to said reservoir, and means for automatically stopping the operation of said air flow producing means when a predetermined quantity of lint has been stored in said reservoir.

l. In a structure of the character described, the combination of a chamber having an out let, means for producing a flow of lint laden air through said outlet, a lint storage reservoir, means arranged in the vicinity of said outlet for collecting lint from the air passing there-through, means for delivering lintfrom said collecting means to said reservoir, and means for automatically producing a signal when a predetermined quantity of lint has been stored in said reservoir and thereafter stopping operation of said air flow producing means when a further predetermined quantity of lint has been stored in said reservoir.

In a structure of the character described, a chamber provided with an outlet through which lint laden air is adapted to be passed, a rotatable member in said chamber, a lint storage reservoir, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for deliverin lint from said collecting means to said reservoir, and means for automatically stopping the rotation of the rotatable memher when a predetermined quantity of lint has been stored in said reservoir.

6. In a structure of the character described, a chamber provided with an outlet through wl ich lint laden air is adapted to be passed, a rotatable member in said chamber, a lint storage reservoir, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for (.elivering lint from said collecting means to said reservoir, and means for automatically producing a signal when a predetermined quantity of lint has been stored in said reservoir and thereafter stopping the rotation of said rotatable member when a further predetermined quantity of lint has been stored in said reservoir.

7. In a structure of the character described, a chamber provided with an outlet, a work receiving member arranged in said chamber, means for rotating said work receiving member, means adapted when actuated for producing flow of lint laden air through said outlet, means for actuating said air flow producin means, a lint storage reservoir, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for delivering lint from said collecting means to said. reservoir, and means for automatically producing a signal when a predetermined quantity of lint has been stored in said reservoir, and thereafter stopping the operation of said means for rotating the work receiving meml'ier and the means for actuating said air flow producing means when a further predetermined quantity of lint has been stored in said reservoir.

8. In a structure of the character described. the combination of a chamber having an out let through which lint laden air is adapted to be passed, a lint storage reservoir having a mouth at its upper end, means arranged in the vicinity of said chamber outlet for collecting lint from the air passing therethrough, means for transferring lint from said collecting means to a point above the mouth of said storage reservoir, whereby said transferred lint will fall by gravity into said reservoir, and a cleaning and packing member inclined upwardly and forwardly toward the lint collecting means so that it overhangs the mouth of said reservoir, said cleaning and packing member being adapted for co-0perative engagement with the lint transferring means when said means is above the mouth of said reservoir.

9. In a structure of the character described, lint transfer means, operating means therefor including a rotatable sprocket wheel and a chain traveling thereover and both normally exposed to lint, and means co-operating with said sprocket wheel for removing lint therefrom.

10. In a structure of the character described, the combination of a lint transfer membenoperating means therefor including a chain upon which said lint transfer member is mounted and a sprocket wheel over which said chain travels, and felt strips engaging opposite sides of said sprocket wheel for preventing the accumulation of lint thereon.

11. In a structure of the character described, a chamber having an outlet, a rotatable w0rk-receiving member in said chamber, means for producing a flow of lint laden air through said outlet, a lint storage reservoir, means arranged in the vicinity of said outlet for collecting lint from the air passing therethrough, means for delivering lint from said collecting means to said reservoir, and means for automatically stopping the operation of said air fiow producing means and for automatically stopping the rotation of the work-receiving member when a predetermined quantity of lint has been stored in said reservoir.

In testimony whereof I hereby affix my signature.

ROBERT C- PAULY.

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