US2351129A

US2351129A - Anchor stud for abrasive wheels

Info

Publication number: US2351129A
Application number: US471908A
Authority: US
Inventors: Jockel Rudolph
Original assignee: Titan Abrasives Co
Current assignee: Titan Abrasives Co
Priority date: 1943-01-09
Filing date: 1943-01-09
Publication date: 1944-06-13
Anticipated expiration: 1961-06-13

Description

R. JOCKEL- 2,351,129

ANCHOR STUD'FOR ABRASIVE WHEELS Filed Jan. 9. 19'43 Patented June 13, 1944 2,351,129 AN CHOR STUD FOR ABRASIVE WHEELS Rudolph Jockel, Chicago, 111., assignor to Titan a corporation of Illinois Abrasive Company,

Application January 9, 1943, Serial No. 471,908

6 Claims.

This invention relates to anchor studs for abrasive wheels and more especially to such a stud or fastening device adapted for attaching a molded abrasive wheel to a metal backing.

Among the features of my invention is the provision of means for fastening a stud to an abrasive wheel by strong and rugged attachment and yet permit very slight flexibility or bending of the stud without loosening the attachment.

Other features and advantages of the invention will appear more fully as I proceed with the specification.

In those forms of devices embodying the features of my invention, shown in the accompanying drawing, Figure 1 is a fragmentary view of the back of an abrasive wheel with a portion of the backin broken away; Figure 2 is a view taken as indicated b the line 2 of Figure 1; Figure 3 is a view similar to Figure 2 showing a modified form; Figure 4 is a view taken as indicated by the line 4 of Figure 3; Figure 5 is a view similar to Figure 3 showing another modifled form; and Figure 6 is a view taken as indicated by the line 6 of Figure 5.

As shown in the drawing, l0 ma indicate the metal backing for a molded abrasive wheel H, for example, a wheel molded 0f granulated carborundum or other abrasive bonded by suitable cement such as Bakelite or resin, usually hardened by baking.

In order to attach the wheel H to the steel back II] it is customary to provide the wheel with studs adapted to be inserted through holes in the back Hi. My invention relates particularly to the manner of fastening such studs in the wheel itself.

In that form of device shown in Figure 2, a metal disk l2 with a flaring flange lZa is embedded in the wheel H, with a nut I3 under the disk, that is, inside of the flange l2a. The outer surface of the disk I2 is preferably flush with the rear face Ila of the wheel. l4 indicates a bolt extending through a hole in the back H! and threaded into the nut l3, such bolt, therefore, serving as a stud to hold the wheel to the back. The bolt I4 is provided with the usual head Ma.

The sheet metal disk 12 is preferably thin enough so that it has a very slight flexibility. This will permit a certain amount of bendin or misalignment of the bolt l4 with a consequent certain amount of rocking of the nut l3 in the wheel H without permitting the same to become entirely loosened. It will be seen that even though the disk portion l2 of the member embedded in the wheel ll flexes or bends slightly, the flared flange l2a will always retain a firm anchorage in the wheel II and thus prevent removal of the head Hi from the wheel even though such nut becomes slightly loosened in the wheel material. The diameter of the flange lZa is enough larger than the diameter of the nut I3 so that any loosening or rocking of the nut I3 in the wheel II with consequent loosening of the wheel material about the nut l3 will not affect the wheel material which anchors the flange Hat.

The construction shown in Figure 3 is substantially the same as that shown in Figure 2 except that a stud H4 is employed instead of a bolt l4. In this case the head H3 on the stud H4 serves the same purpose as the nut [3 in the other device. In the device of Figure 2 the nut l3 serves as a head for the bolt or stud l4. Here the disk H2 with the flaring flange ll2a corresponds to the disk 12 with the flaring flange l2a.

The device shown in Figures 5 and 6 is substantially the same as that shown in Figure 2, the disk 2l2 with the flaring flange 2l2a corresponding to the disk l2 with the flaring flange I2a; but as here shown the flange l2a is corrugated as indicated by 2I2b (see Figure 6) in order to give a better anchorage in the wheel material.

While I have shown and described certain embodiments of my invention, it is to be understood that it is capable of many modifications. Changes, therefore, in the construction and arrangement may be made without departing from the spirit and scope of the invention as disclosed in the appended claims, in which it is my intention to claim all novelty inherent in my invention as broadly as permissible, in view of the prior art.

What I claim as new and desire to secure by Letters Patent is:

1. In combination with a cast abrasive wheel, a perforated sheet metal cup with its flared flange embedded in said wheel, and a stud projecting from said wheel through said perforation, said stud having a head within the cup embedded in the wheel.

2. In combination with a cast abrasive wheel, a perforated sheet metal cup with its flared flange embedded in said wheel, said cup lyin substantiall flush with the rear face of the wheel, and a stud projecting from said wheel through said perforation, said stud having a head within the cup embedded in the wheel.

3. In combination with a cast abrasive wheel,

a perforated flexible sheet metal cup with its flared flange embedded in said wheel, and a stud projecting from said wheel through said perforathrough said perforation, said stud having a head tion, said stud having a head within the cup emwithin the cup embedded in the wheel.

bedded in the wheel. 5. A device as claimed in claim 1, in which the 4. In combination with a cast abrasive wheel, flange of the cup is corrugated.

a perforated flexible sheet metal cup with its 5 6. A device as claimed in claim 2, in which the flared flange embedded in said wheel, said cup flange of the cup is corrugated.

lying substantially flush with the rear face of the wheel, and a stud projecting from said wheel RUDOLPH JOCKEL.