US2241151A

US2241151A - Waste puller and method

Info

Publication number: US2241151A
Authority: US
Inventors: Rudolph W Miller
Original assignee: Individual
Current assignee: Individual
Priority date: 1940-09-13
Filing date: 1940-09-13
Publication date: 1941-05-06
Anticipated expiration: 1958-05-06

Description

May6,194. R. w. MILLER .2,241,151

. V WASTE FULLER AND METHOD Filedsept. 13, 1940 Patented May 6, 1941 UNITED STATES PATENT QFFICE.

WASTE FULLER AND METHCD Rudolph W. Miller, Winona, Minn.

Application September 13, 194), Serial No. 356,701

(Ci. iii- 82) 2 Claims.

The invention relates to waste pullers and to a method of pulling waste whereby waste may be prepared for use, having a minimum of dust and of excessively short fibers.

It is a further object of the invention to provide a simple addition to a known form of waste puller to carry out the method of the invention although the physical embodiment shown for purposes of illustration may be widely varied to carry out the process of the invention,

Further objects will appear from the following description when read in connection with the accompanying drawing showing an illustrative embodiment of the apparatus of the invention and wherein The figure is a side elevation partly broken away and diagrammatic in character of a waste puller equipped with the apparatus of the invention.

Waste as received from the mills where it is produced, comprises masses of tangled threads. Many of these threads are several feet in length and the mass contains much dust and other undesirable material.

To prepare this material for use, as in the journal boxes of railway cars, as an oil absorbent, the masses of threads have to be reduced to a usable form. To this end the crude waste is subjected to the action of a machine of the character shown, which is well known.

Waste placed on the feed table lil and spread out as evenly as possible is picked up by teeth on the main cylinder ll, from which it is pulled by teeth on cylinder l2, from there to cylinder I3 and back to the main cylinder, which process is repeated by other cylinders l2 and i3 in a well known manner.

The type of machine used for purposes of illustration is shown in patent to Proctor, 139,609,

dated June 3, 1873.

Each time the threads are pulled from one cylinder to another many threads are broken and the act of snapping the threads acts much after the nature of an explosion which releases many short fibers. These short fibers, in usual practice remain in the material. The presence of these short bers may not be greatly objectionable when the waste is used for some purposes but is quite objectionable in the lubrication of railway journals. bers become frozen to the journal at times when the car is stationary in severe weather, and when again started the adhering portion is carried around under the brass and is the cause of hot boxes.

In the use named the short Much of the dust in waste can be removed I by beating but not so with these short bers which will merely be felted with the long iibers by such treatment. It is diflicult to remove such fibers after they have become embedded in the mass. In accordance with the present invention they are removed while freely suspended in the air whereby they are not allowed to become embedded.

To this end there is shown a suction device comprising a centrifugal blower I4 having its intake connected by a hood l5 to the casing I6 of the machine. Conveniently a cover, usually present at the point indicated, may be removed and the hood I5 substituted.

The use of the suction device may cause sufcient draft of air to catch the short bers on the fly as it were and remove them. Their removal may be made more certain and thorough by provision of a positively introduced blast or blasts of air delivered at the points of rupture of threads.

To this end there is shown a blower I6 delivering to conduits l1 which introduce the wanted blasts at I8 closely adjacent the points of rupture of the threads. By this means the short bers are removed as released, and so separated from the moving threads as to not become entrapped therein. Such removal effectually introduces the said short fibers into the moving draft air created by the suction means.

Incidentally, of course dust released by the rapid movement and changes of direction of the threads, is eiectually removed.

Minor changes may be made in the physical embodiment of the apparatus and in the steps of the process of the invention without departing from the spirit thereof.

I claim:

1. A waste treating apparatus comprising, in combination: waste pulling apparatus acting to break threads comprised in the waste with release of short fibers; a housing enclosing said apparatus; means to direct air blasts to the 1ocation of thread snapping in the housing and means to withdraw air from the housing acting to produce air movement to remove short fibers released by the snapping of the threads aided by said air blasts.

2. The process of preparing waste for industrial use which comprises: breaking the threads comprised in the Waste with release of short bers in an enclosed area; directing air blasts to the locations of thread breaking to prevent settlement of said released fibers; continuing the removal of the air-borne fibers by air currents induced by withdrawal of air from the locations of thread-breaking and withdrawing the air-borne fibers from the enclosed area.

RUDOLPH W. MILLER.