US2301058A

US2301058A - Licker grinder

Info

Publication number: US2301058A
Application number: US347114A
Authority: US
Inventors: John F Lehman
Original assignee: FELTON WIMBERLY JR
Current assignee: FELTON WIMBERLY JR
Priority date: 1940-07-23
Filing date: 1940-07-23
Publication date: 1942-11-03
Anticipated expiration: 1959-11-03

Description

J. F. LEHMAN LICKER GRINDER Nov; 3, 1942.

Filed July 23, 1940 2 Sheets-Sheet 2 n A TORNEYS Patented Nov. 3, 1942 LICKER GRINDER John F. Lehman, Birmingham, Ala., assignor to FeltonWimberly, Jr., Birmingham, Ala.

Application July 23, 1940, Serial No. 347,114

3 Claims.

This inventionrelates to a licker grinder and has for an `object the provision of an apparatus capable of accuratelyand speedily grinding the teeth of a licker without the necessityof removv ing the wire therefrom.

A further object of my invention is tol provide a licker grinder including means to guide and hold the grinding wheels to proper position to contact the teeth while'the licker is being turned beneath the grinder.

Astill further object of my invention is to pro- Vide a licker grinderembodying motor driven grinding wheels mounted in a suitable frame, and embodying guiding means supporting the frame and motor on the licker and adapted to hold the grinding wheels `to proper grinding run until the teeth were so dull it was no longer `capable of doing effective work, when it was removed and equipped with new wire. By the use of my invention theteeth of the wire when dulled may be ground and thelicker maintained in good condition indefinitely.

Briefly; myinvention comprises a motor having a grindingwheel mounted on its shaft on each end,` the grinding wheels being of a width to` extend downwardly between adjacent rows of teeth ,i on `the .licker and beveled to the` proper pitch to grind the licker `teeth on each side of .the .grinding wheel. The` motor is pivotally mounted in aframe adapted to be supported on the licker cylinder whereby the depth of grinding wheels withl respect to the licker surface may be adjusted. It is also adjustable with its grinding wheels laterally of the frame. The frame is supported byzadjustable guide wheels which `iol- `lowthe spiral wire yon the licker and guide and hold the grinding wheels to their work.

`These and other features of my invention are "i illustrated inthe accompanying drawings forminga part of thisapplication, in which y Fig. 1 is a plan view of my improved grinder; Fig. 2 is asectional View taken along the line n-nofrig. 1, and showing the grinder in operation;

. I Fig. 3 is a detail sectional viewl taken on line III--III of Fig. 2, showing one of the adjusting means for the guide rollers; and

'-isa plan'rview partly diagrammatic,`

showing the apparatusin ,operation grinding the licker teeth.

Referring to the `dra'vvings for a betterunderstanding of my invention, I show a rectangular frame comprising side members It) and I,I 1 held together by a plurality of through bolts I2. Mounted between the frame members I0 and II is a motor I3 having a grinding wheel I4 mounted on each end of its shaft. The motor is supported in the frame by means of a bracket I6 secured to the motor by means of tap screws I1, and which is connected at its opposite end, preferably by welding, to a sleeve I 8.mounted on a bolt I9 extending fromside to side of the frame. An adjusting bolt.2I ,ispivotally .connected to the bracket I6 `at `22, and is provided with an adjusting nut 23 manually operable to raise and lower the motor I3 in its frameby a pivotal movement about the bolt I9. As will be seen in Fig. 2, the pivot pin` 22 is capable of limited lateral sliding movement on the bolt 2|. A spring 24 on the bolt 2| holds the motor steady in the frame in its adjusted position. The` nut 23 is split, as shown at 26, anda set screw 21 serves to compress the splitv portions and prevent loosening of the nut from its set position. Openings 20 in the end frame members I0 and Ilpermit the pivotal movement ofthe motor described.

Thesleeve I8 with bracket I6 and motorl3 is adjustable laterally in the frame by means of an adjusting nut 28 slidingly connected to the sleeve I8 at 29, and which is lockedin adjusted position by means of a lock nut 3l. As the motor is thus laterally adjusted the pivot pin 22 slides through the opening in the adjusting `bolt 2|, as already explained.

Extending across the frame near the'bottom is an axle 32 heldin'position by nuts 33,.and which has mounted ,thereon a plurality of guide Wheels 34. These guide` wheels areso spaced as to bear against `thesides of the wire 35 ofav licker as the licker is I'being .rotated with `the apparatus resting onv the upper surface, gland lare effective to hold the grinding wheels I4 to their proper position to grind the licker teeth, as-seen in Fig. 2. On the opposite side of the frameis another axle 36 held in place by nuts 31 and having mounted thereon: supporting wheels `38 which bear against the surface of the cylinder and assist in holding the frame up off the Wire as the licker is being rotated.

In order that the supporting wheels-38 may bear evenly on the surface of the'licker,`I,pro-

vide a means,` shown particularly in Fig.v 3,V to adjust the position of one end of the shaft 36 with respect to the frame I0. 3, the axle 36 extends through a slotted opening 39 inthe frame member Ill'and througha` hole in a plate 4I mounted on the side of the frame member. I0. The upper endof the vpla-te 4I nis,

As ,shown in Fig.

bent over to form a head 42 through which extends an adjusting screw 43. 'Ihe adjusting screw 43 extends downwardly through the head 42 and is screwed into the threaded head 44 of a bolt 46 rigidly secured to the frame member I0 by means of a nut 41. A spring 48 is interposed between the head 42 and the nut 44. The bolt 46 passes through a slotted opening 49 in the plate 4I, so that when the nut 41 is loosened and the screw 43 is turned, the plate 4I, with the adjacent end of the axle 36, moves up or down, depending on the direction of turning of the screw 43, and its height is thereby regulated with respect to the surface of the licker cylinder. When the proper adjustment has been secured, the nut 41 is tightened up, which tightens the plate 4I against the frame member I0 and holds the axle 36 rmly in place.

Referring to Figs. 2 and 4, whenever it is desired to grind the teeth of a licker, the licker is removed from its frame and placed in a cradle 5I with its shaft resting in suitable openings 52 and 53 in the cradle. The licker cylinder may then be rotated by means of a crank 54, or by any other suitable means. The grinder frame is then set down on the cylinder, as shown in Fig. 4. It is prevented from turning with respect to the cylinder by means of a guide bracket 56 secured to the side of the frame, as shown in Fig. 2, and having

rollers

51 and 58 mounted therein between which a rod 59 extends, and which has its ends inserted in suitable openings in the cradle 5|. Electric -current for operating the motor I3 may be supplied through a wire 6I', and the operation of the motor is controlled by switch 62.

As is well known, the wire 35 of a licker is comprised of several separate toothed spirals laid side by side in grooves formed in the licker shell, the distance between two rounds of any one spiral being one inch, and there being from lve to ten spirals, side by side, according to the class of work for which the card, in which the licker is incorporated, is intended. This results in the distance between the centers of two consecutive spirals being either one-fth, one-sixth,

one-seventh, one-eighth, one-ninth, or one-tenth inch apart, while the points of the teeth are usually one-fourth inch apart lengthwise of the wire. I'.

In designing my improved grinding machine, therefore, I space the grinding wheels I4 to t accurately between two parallel rows of wire, and the grinding wheels are of such thickness and are formed with beveled peripheries 63, so as to grind the teeth 60 successively on each side of the wheel as the licker is turned, as shown in Fig. 2 of the drawings. The guide wheels 34 must also be spaced on the axle 32 to bear against the wire 35 and to hold the grinding wheels I4 to their proper position for grinding. The grinding wheels may be properly positioned with respect to each other, if some slight adjustment is required, by means of shims on the motor shaft, as is well understood.

As the teeth are being ground, the licker is turned in one direction until the outermost grinding wheel in the direction of travel completes the grinding of the teeth to that end of the cylinder. As clearly shown in Figs. 2 and 4, the guide wheels 34 rest on the cylinder between the spirally wound rows of licker wire, so that upon rotation of the cylinder the grinder is caused to traverse the same. Then the direction of rotation of the licker is reversed and the machine is fed back in the opposite direction until the opposite grinding wheel completes its grinding of the teeth to the opposite end of the cylinder. Then the machine is moved and the guide wheels placed between the next adjacent parallel rows of wire and the operation just described is repeated, followed by a similar operation, until all the rows of the licker teeth have been ground.

From the foregoing it will be apparent that I have devised an improved licker grinder which is simple of construction and operation, and which is adapted to grind the teeth of a licker or other spirally arranged teeth with a maximum of efficiency and a minimumof time.

While I have shown my invention in but one form, it will be obvious to those skilled vin the art that it is not so limited, but is susceptible of various changes and modifications, without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

What I claim is:

1. A licker grinder comprising a motor, a frame supporting the motor, a pair of grinding wheels mounted on opposite ends of the motor shaft and spaced to t between parallel spiral rows of licker wire and adapted to grind the sides of adjacent rows of teeth, means to rotate the licker cylinder with respect to the grinder, rollers carried by the frame for supporting the grinder on the licker cylinder and cooperating with the spiral rows of -wire to guide and hold the grinding wheels to their work and cause the grinder to traverse the licker, means to adjust the position of the guide means vertically with respect to the frame, a guide bar extending along one side of and parallel to the licker cylinder, and a bracket carried by the motor frame engaging the guide bar and free to swing thereabout for holding the grinder against turning with the licker cylinder.

2. A licker grinder comprising a supporting frame, guide wheels carried by the frame and adapted to bear against the spirally wound licker wire, a motor pivotally mounted on one side of the frame, means to adjust the motor laterally and about its pivot in the frame, a pair of grinding wheels mounted on the opposite ends of the motor shaft and spaced to enter between the rows of teeth of the licker, and having bevelled faces to grind the adjacent sides of the licker teeth, means to rotate the licker as the grinding wheels are being driven by the motor, and means to hold the grinder frame against turning with the licker cylinder.

3. A licker grinder comprising a grinding Wheel adapted to grind the sides of adjacent spiral rows of licker teeth, a frame upon which the grinding wheel is mounted, rollers carried by the frame for supporting the grinder from the licker cylinder and laterally engaging the rows of licker wire to hold the grinding wheel to proper cutting position, means to drive the grinding wheel, means to rotate the licker to cause the grinder to traverse the same, a guide bar extending along one side of and parallel to the licker cylinder, and a, bracket carried by the motor frame engaging the guide bar and free to swing thereabout for holding the grinder against turning with the licker cylinder.

JOHN F. LEHMAN.