US2584457A

US2584457A - Lap pin and calender rack

Info

Publication number: US2584457A
Application number: US709038A
Authority: US
Inventors: Hunter Fred
Original assignee: Prec Gear & Machine Co
Current assignee: Prec Gear & Machine Co; Precision Gear & Machine Co
Priority date: 1946-11-09
Filing date: 1946-11-09
Publication date: 1952-02-05
Anticipated expiration: 1969-02-05

Description

1952 F. HUNTER LAP PIN AND CALENDER RACK 2 SHEETS-SHEET 1 Filed Nov. 9, 1946 FRED HUNTER jwumvboa'i Feb. 5, 1952- F, HUNTER 2,584,457

LAP PIN AND CALENDER RACK.

Filed Nov. 9, 1946 2 SHEETS-SHEET 2 FRED HUNTER Sid/UM Patented Feb. 5, 1952 LAP PIN AND CALENDEB, RACK Fred Hunter, Lancaster, S. 0., assignor to Precision Gear & Machine Company, Charlotte, N. 0., a corporation of North Carolina.

Application November 9, 1946, Serial No. 709,038

1 This invention relates to an improved lap pin having anti-friction properties and calender racks associated therewith to prevent the ends of the lap pin from rotating in the calender racks.

' Heretofore, a lap pin has usually been composed of a straight rod, onto which the lap of fibers is wound in a picker, and the 1ike,'and the ends of this lap pin have been pressed downwardly by means of calender racks, sometimes referred to" in thetrade as loggerheads. The conventional calender racks have rollers therein and the ends of the lap pin rotated in the hooked portions of the calender racks. This has resulted in wearing of the ends of the lap pin and producing defective lap rolls.

It is an object of this invention to provide a lap pin onto which a lap of fibers is wound with the lap pin comprising an elongated sleeve onto which the lap of fibers is wound and said sleeve being penetrated by a rod whose ends project substantially beyond the ends of the sleeve, with ball bearings disposed between the sleeve and the rod, whereby the rod will remain stationary and the sleeve will rotate along with the lap roll. This will result in the ends of the rod not rotating but being held stationary and in order to insure that the rod will not rotate, the calender racks, instead of having roller bearings therein for engaging the lap pin, have friction surfaces, such as a pad of leather, fabric and the like, to frictionally engage the ends of the rod to retard rotative movement thereof so that the sleeve will do the rotating and the rod will remain stationary.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which Figure l is an elevation of my improved lap view taken Referring more specifically to the drawings,

the numeral l indicates a sleeve. Penetrating Figure 2 is a longitudinal sectional view taken I cl ims. (Cl. 19 -162) the sleeve, and projecting from both ends thereof, is a shaft II which has a bore I2 extending from one end thereof to near the handle end I3, saidbore l2 stopping at the point l4. Mounted on the rod H areraceways I6 and I! and mounted in the insideiand at the end portions of the sleeve III are raceways l8 and i9, and between these raceways are disposed balls 20, and which balls 20 are sealed by annular fiat rings 2!, whereby the sleeve Hi will rotate "by means of the ball bearing relative to the rod ll since the sleeve has an inside diameter substantially greater than the rod II. The bore l2 in the rod II is conventional in the old-style of lap pin and is for the purpose of inserting a smaller pin in the bore l2 before the roll of fibers is dofied from the lap pin so that the roll of fibers will be doffed onto the smaller pin which 'will be used for handling purposes, while the lap pin proper will be reinserted in the picker for the formation of a new lap roll.

In Figures 5, 6 and 7 portions of a picker are shown, in which the

frame members

25 and 26 have mounted therein suitable calender rolls 2'! and 28 on which the lap roll 29 is adapted to be formed. In a picker of this type there are

calender racks

30 and 3! whose lower ends have a rack thereon, each of which is engaged by a pinion, not shown, which are controlled by the picker for moving the calender racks upwardly in proportion to the diameter of the roll as it is being formed. These old-style calender racks had a hooked portion 33 at the top thereof in which rollers were mounted for contacting the ends of the lap pin and the lap pin rotated in the calender racks.

In the present form of the invention there is secured in the hooked 'portion of each of these calender racks a fiat piece of friction material 35, such as leather, which contacts the end of the shaft I I, and this tends to prevent rotation of the shaft H to thus permit the sleeve H] to rotate relative to the shaft I I while the shaft H remains stationary.

It is thus seen that I have provided an improved lap pin in which the lap receiving portion rotates but which portion is rotatably mounted on a shaft which is engaged by friction material disposed in the calender racks to prevent rotation of the shaft but permitting rotation of the sleeve mounted on the shaft and said sleeve having sealed ball bearings so as to provide for easy running and long life.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only, and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. In a picker having calender rolls and a pair of calender racks for engagement with a lap pin onto which a lap of fiber is Wound for pressing the lap of fibers against the calender rolls, said lap pin comprising a shaft having its ends, extending beneath the calender racks, each of the calender racks having friction material therein for engaging the shaft and exerting downward pressure on the same, said. shaft being surrounded by a sleeve member having a greater inside diameter than the outside diameter of the shaft, a ball bearing disposed between each end 4 inner surface of the sleeve member and the exterior of the elongated member.

, 3. A lap pin for pickers comprising a shaft, 3.

sleeve member surrounding an intermediate porof the sleeve and the shaft whereby the sleeve anti-friction bearings disposed between the tion of the shaft and adapted to receive a lap of fibers, the inside diameter of the sleeve being substantially greater than the outside diameter of the shaft, anti-friction bearings disposed between the shaft and theends of the sleeve member, said shaft having a longitudinally extending bore extending from one end thereof for a distance greater than the length of the sleeve but stopping short of the other end of the shaft for reception of a smaller pin.

FRED HUNTER.

REFERENCES CITED The following references are of record in the file of'this patent:

- UNITED STATES PATENTS