US2580140A - Drum type abrading device - Google Patents

Description

1951 w. H. VAN ZOMEREN DRUM TYPE ABRADING DEVICE Filed Aug. 8, 1949 IN VEN TOR.

ATTORNEY lllll Patented Dec. 25, 1951 .UNITED STATES PATENT OFFICE i i I I 2,580,140

DRUM TY PE ABRADING DEVICE William H. Van Zomeren, Kalamazoo, Mich.

Application August 8, 1949, Serial No. 109,155

2 Claims.

1 This invention relates to improvements in drum type abrading device.

The main objects of this invention are: First, to provide an improved sanding or abrad ing drum which permits very rapid manipulation for removing or applying the abrading band to the drum.

- Second, to provide a sanding or abrading drum of the segmental section type which may be very quickly and effectively secured to the shaft or spindle or released therefrom. 1

Third, to provide an abrasive strip and securing means thereforto the drum which greatly facilitates the effective application of the abrading stri to the drum.

Objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a side elevational view of a sanding or abrading drum embodying my invention.

Fig. 2 is a fragmentary view mainly in section on a line corresponding to line 2--2 of Fig. 1.

Fig. 3 is a side view of the drum removed from the shaft and partially opened illustrating one of the steps in securing the band thereto.

Fig. 4 is a fragmentary view mainly in section on a line corresponding to line 4-4 of Fig. 1 with the clutch elements in released position.

Fig. 5 is a fragmentary view mainly in section on a line corresponding to line 55 of Fig. 2.

Fig. 6 is a perspective view of a roll of the abrasive band of my invention.

In the embodiment of my invention illustrated, the spindle or shaft I is provided with an abutment 2 and has a threaded portion 3 adjacent the abutment. The complementary drum members, designated generally by the numeral 4-4, comprises rim elements 5 having integral web elements 6 and hub elements I and 8. These drum members are pivotally connected at 9 to be swung to and from each other as is indicated in Fig. 3. The rim elements are provided with bracing webs I 0.

The drum members have pin supports II at their swinging ends, these supports having bores l2 adapted to receive the pins l3 which are adjustably and removably secured in the bores by means of the set screws l4. The supports have bores l5 aligned with the bores l2 to receive the projecting ends of the pins, as is shown in Fig. 5. The faces I6 of these pin supports are flush with 2 the faces I! of the outturned radial rim flanges [8.

The resilient tire I9 is arranged around the rim elements with its ends in abutting relation to the flanges l8. To secure the drum upon the shaft in its closed position, I provide the internally conical clutch member 2|] disposed on the shaft or spindle I to coact with the abutment 2 and to clampingly embrace the conical hub elements I. A second clutch member 2| is provided having an internal'conical recess 22 adapted to clutchingly embrace the conical hub elements 8. The drum members 4 are provided with studs or pins 23 adapted to engage the holes 24 in the clutch member 2l' so that when the drum is rotated the member 2| is rotated. The clutch member 2|, being threaded upon the shaft, is moved longitudinally thereof by rotation of the drum so that the threaded clutch member may be quickly engaged and disengaged by the rotation of the drum. When the clutch members are in engagement, the drum is effectively secured to the shaft for rotation therewith.

The tire serves as a support for the abrasive band 25 which is of a width corresponding to the width of the tire and of such length that it may be arranged around the tire as shown in Fig. 3, and its ends engaged with the pins l2 when the members 4 are in partially open position, as shown in Fig. 3. When the drum members are clo ed and clamped upon the shaft, the band is suitably tensioned and secured by means of the pins and by being clamped between the flanges l1 and the pin support members. The faces of the support members and the flanges are flush.

To facilitate the forming of the bands of proper length and their application, the abrasive strip designated generally by the numeral 26, has

opposed notches 21 in the edges thereof and severing perforations 28 aligned with the notches. These notches 21 and perforations 28 are uniformly spaced longitudinally of the strip so that it may be conveniently severed into sections of the desired length. The band is further provided with transverse rows of perforations 29 suitably spaced to receive the pins l2. This greatly facilitates the application of the bands to the drum and saves time and material, as it avoids the necessity of workmen measuring off the desired amount or cutting and trying as is the general practice. If a section cut from the roll is too short, it is wasted.

I have illustrated and described my invention in a highly practical embodiment thereof. I have not attempted to illustrate or describe various W modifications or adaptations as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In an abrading device, the combination with a shaft provided with an abutment and with a threaded portion adjacent the abutment, of identical complementary drum members each comprising rim, hub and web elements, said drum members being pivotally connected at one side thereof and adapted, when brought together, to constitute a circular drum, said hub elements being axially slidable on said shaft and being outwardly tapered at both ends, an internally frusto conical clutch member axially movable on said shaft for supported engagement with said abutment and to coact with one end of both of said hub elements, and a second internally frustoconical clutch member meeting with the other end of both of said hub elements and having threaded engagement with the threaded portion of said shaft, each of said Web elem nts bein provided with an axially projecting stud, said second clutch member having holes therein adapted to receive said studs so that rotation of the drum in one direction on the shaft with the studs in engagement with the said second clutch member acts to move the clutch members together and clamp them upon the hub elements and secure the drum to the'shaft.

2. In an abrading device, the combination with a shaft provided with an abutment, of complementary drum members pivotally connected at one side thereof and adapted, when brought to gether, to constitute a circular drum and includ ing hub elements axially slidable on said shaft and tapered at both ends, a clutch member axially movable on said shaft for supported engagement with said abutment and adapted to clampingly engage one end of hub elements of both drum members, and a second clutch member coacting with the other ends of the drum member hub elements and having threaded engagement with the shaft, each of said drum members being provided with an axially projecting stud, said second clutch member having holes therein adapted to receive said studs so that rotation of the drum in one direction on the shaft with the studs in engagement with the said second clutch member acts to move the clutch members together and clamp them upon the hub elements and secure the drum to the shaft.

WILLIAM H. VAN ZOMEREN.

REFERENCES CITED UNITED STATES PATENTS Num er v Name Date Re. 8,555 Dunham Jan. 28, 1879 136,727 Howe' Mar. 11, 1873 178,994 Buzzell June 20, 1876 217,300 Starr July 8, 1879 610,761 Keary Sept. 13, 1898 613,079 Ross Oct. 25, 1898 733,577 Catt July 14, 1903 999,436 Dobyne Aug. 1, 1911 1,104,684 Levine July 21, 1912 2,107,411 Dunford Feb. 8, 1938 2,403,434 Gulden July9, 1946 FOREIGN PATENTS Number Country Date 394,137 Germany Apr. 12, 1924 400,754

Great Britain Nov. 2, 1933

Images