US2895283A

US2895283A - Thread cheese-ejecting device for suspended centrifugal spinning cans

Info

Publication number: US2895283A
Application number: US561106A
Authority: US
Inventors: Gardella Costantino
Original assignee: Individual
Current assignee: Individual
Priority date: 1955-01-28
Filing date: 1956-01-24
Publication date: 1959-07-21
Anticipated expiration: 1976-07-21

Description

July 21, 1959 c. GARDELLA 2,895,283

THREAD CHEESE-EJECTING DEVICE FOR SUSPENDED CENTRIFUGAL SPINNING CANS Filed Jan. 24. 1956 2,895,283 Patented July 21, 1959 THREAD CHEESE-EIECTING DEVICE FOR SUS- PENDED CENTRIFUGAL SPINNING CANS Costantino Gardella, Genoa, Italy Application January 24, 1956, Serial No. 561,106

Claims priority, application Italy January 28, 1955 2 Claims. (Cl. 57--34) This invention relates to a thread cheese-ejecting device for suspended centrifugal spinning cans, particularly those for the spinning of long and hard bres; such as jute, hemp, sisal and the like.

In these spinning frames, particularly in those provided with high-speed spinning cans, the thread cheeses formed in the cans, when this revolves at high speeds to 2O thousand r.p.m.), due to the great centrifugal force, adhere very firmly to the can lwalls and thus it is not easy to take same out. Thus, in many centrifugal spinning frames, in order to take the thread out of the can, it must be recoiled, which is a 4great inconvenience and causes long interruptions in the spinning process.

According to the invention, the above-mentioned drawbacks are overcome by providing an ejecting device which consists of a at member, usually a disk, provided with stems projecting through perforations in the closed top of each of the suspended centrifugal spinning cans. Said stems are provided with springs which pull same upwardly and tend to keep the said disk against the underside of the said top of the spinning can, whereby means are provided for positively pushing said stems against the force of their springs so as to push the said disk downwardly thus ejecting the thread cheese.

By this means it is possible to eject at the same time the thread cheeses of a whole set of spinning cans of a spinning frame, thus simplifying the whole device and providing for the very rapid and simultaneous discharge of all thread cheeses. In order to render this ejection more easy, the cans are preferably frusto-conical or bell-shaped.

The invention will be better understood from the following speciiication with reference to the attached drawing, in which:

Fig. 1 shows part in view and part in section an ejecting device according to the invention tted to a centrifugal spinning can forming part of a spinning frame (shown only in part) and Fig. 2 shows a pneumatic control for the ejecting device according to Figure 1.

In the drawing, 1 is the supporting frame from which the bell-like centrifu-gal spinning cans 2 (of which only one is shown) are suspended. Each can 2 is mounted on ,roller bearings 3 and is preferably driven by a belt drive, the belts being passed on belt pulley 5 fitted on the can neck 102, through which a reciprocating thread guide 6, which may be of any suitable type, is slidably mounted.

Under the bottom 202 of the bell-shaped centrifugal spinning can 2 a iiat member, usually an ejector disk 8 (which will be called simply the ejector) is fitted to which a number of push stems 9 are fastened which pass through corresponding holes drilled in the closed can top 202 and are provided with heads 109 which cannot pass through the said can top holes. Between the said heads 109 and the -top surface of the can -top 202 on said push stems 9 coil springs 10 are threaded which tend to pull the said stems 9 upwardly so as to draw the ejector 3 against the lower face of the can bottom 202. Above the push stems of each or preferably of a set of cans a push bar 11 is fitted, which is pro-1 vided with an aperture 111 in correspondence of the spinning can neck and is provided with means for pushing same downwardly, so as to press down the push rods against the spring action, thus pushing downwardly the ejector S, lwhich thus ejects the thread cheese 7. In the embodiment as shown this ejection is rendered easy due to the spinning can 2 being substantially frustoconical or bell-shaped.

In the example as shown, the push bar 11 is controlled pneumatically by connecting same to the piston rod 112 of a double-acting piston 12 mounted in a vertical cylinder 13. The cylinder 13 is fastened for example under the frame 1 (Fig. l) and the chambers formed at both ends thereof by said piston l2 forming a slidable partition, can be put alternatively into communication -with a compressed air (or other gas) tank 17 through pipings 14, 15 by means of a three-way cock 16. Thus when air or other gas under pressure is sent into the lower cylinder chamber 113, the push bar 11 is lifted, whereas when air under pressure is sent into the upper cylinder chamber 213, the push bar 1l is driven downwardly and thus it depresses the push stems 9 and thus the ejector 8 connected thereto is driven away from the can top and ejects the cheese 7 out of the spinning can 2.

Of course, the invention may be embodied in many other equivalent ways, without departing from the basic principle thereof, as set out above. Thus, instead of a double-acting piston, also a simple-acting piston could be adopted, provided the push bar be provided with suiiciently strong springs for lifting same after each positive operation by the pressure fluid for expelling the cheeses out of the spinning cans. Also, the ejector, may be also in the form of a spider or of a grid. Furthermore, the control of the push bar could be effected hydraulically or by other conventional means permitting a distant control, without departing from the Spirit of the invention or the scope of the appended claims.

I claim:

l. A thread cheese-ejecting device for centrifugal spinning cans comprising a frame, a row of bell-like spinning cans suspended from said frame, each can having a closed top with a central opening and a crown of spaced holes, an annular disc-like ejector within the top of each spinning can, a plurality of stems iixed with each ejector and projecting upwardly through said holes respectively, a head on the upper end of each of said stems, a spring coiled around each stem and interposed between said stem head and the top of the spinning can to bias the ejector upwardly against the can top, a push member overlying all of the stems of all of the spinning cans of a row and slightly spaced therefrom when said stems are not in depressed position, and means for reciprocating such push member towards and away from said stems for depressing said stems to press the ejectors against the respective thread cheeses to effect the removal thereof from the respective cans.

2. A thread cheese-ejecting device for centrifugal spinning cans comprising a frame, a row of bell-like spinning cans suspended from said frame, each can having a closed top with a central opening and a crown of spaced holes, an annular disc-like ejector within the top `of each spinning can, a plurality of stems Xed with each ejector and projecting upwardly through said holes respectively, a head on the upper end of each of said stems, a spring coiled around each stem and interposed between said stern head and the top of the spinning can to bias the ejector upwardly against the can top, a push bar o-verlying all of the stems of all of the spinning cans of a row and slightly yspaced therefrom when said stems are 5 not in depressed position and pneumatic means for reciprocating such push bar towards or away from said stems for depressing vsaid stems to press the ejectors of all the cans of the row against the respective threads cheeses to effect the removal thereof from the respective 10 cans.

References Cited in the le of this patent UNITED STATES PATENTS Pape Ian. 16, `1945 Crewdson Ian. 16, 1945 Pape Ian. 16, 1945 FOREIGN PATENTS "Germany Dec. 3, 1942 Germany May 28, 1953