US2549529A

US2549529A - Magnetic chip collector for grinders

Info

Publication number: US2549529A
Application number: US785105A
Authority: US
Inventors: Alfred V Sandlin
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-11-10
Filing date: 1947-11-10
Publication date: 1951-04-17
Anticipated expiration: 1968-04-17

Description

April 17, 1951 :VL; SANDLIN MAGNETIC, can COLLECTOR FOR c mn s rued na'v. 10, 1947 Alfred V. Sand/in I INVENTOR.

Patented Apr. 17, 951

UNITED STATE s' PATENT FF-me; 1

MAGNE TIC CHIP COLLECTOR FOR I Alfred v. sahali'n,oor u ohri tigre l Application November 10, 1947, Serial-N0. 785,105

2 Claims. (01; 51-270) 1 This invention relates to new and useful improvements and structural refinements in electric grinders, and the principal object of the invention is to provide an attachment for such grinders in the form of what may be referred to as a magnetic chip collector, whereby particles 'of iron and steel which usually fly from the attached to grinders of various types and sizes.

An additional object of the invention is to provide a magnetic chip collector for grinders which will readily lend itself to economical manufacture, and which is otherwise well adapted for the purpose for which it is intended.

With the above more important objects in view, and such other objects as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:

Figure 1 is a front elevational view of a grinder showing the invention in situ thereon.

Figure 2 is a top plan view of the subject shown in Figure 1, the same being partially broken away to reveal the invention, and

Figure 3 is a cross-sectional view, taken substantially in the plane of the line 3-3 of Fi ure 1.

Like characters of reference are used to'designate like parts in the specification and throughout the several views. r

Referring now to the accompanying drawings in detail, the general reference character [0 designates a grinder of conventional design, which embodies in its construction a suitable electric motor ll mounted upon a base l2, the armature [3 of the motor carrying a grinding wheel [4, as will be clearly apparent.

The wheel I4 is partially enclosed by means of a safety guard l5 which, in many instances, is associated with the motor ll through the medium of the connecting sleeve l6, and the essence of novelty in the invention resides in the provision of a magnetic chip collector designated 1 2 generally by the reference character 11, which will be presently described.

The chip collector l1 embodies in its construction an arcuate member or. trough l8 having a V-shaped cross-sectional configuration as shown in Figure 2, the member 18 being provided at one end with a bracket l9 whereby it is secured 'to one end of an arcuate electro-magnetic coil 20.

The entire collector I1 is disposed within the guard I5 to which it is secured by means of 'a suitable bolt or screw 21, matters being so arranged that the arcuate member I8 is disposed adjacent the periphery of the wheel It, as is best illustrated in Figure 3.

The electro-magnetic coil 20 is connected in I parallel by means of a twin conductor 22 to a switch 23 which controls the operation of the motor ll, so that the electro-magnetic coil is energized simultaneously with the motor I I when the grinder is to be used.

As will be clearly apparent, the switch 23 is conveniently mounted within the base l2.

When the invention is placed in use, supply of current is simultaneously delivered to the motor H and to the coil 20, resulting in the rotation of the wheel l4 and in simultaneous magnetization of the member 18. -Accordingly, when a steel or iron object is being ground on the wheel l4, particles of iron or steel'will be attracted by the member l8 and thereby prevented from flying beyond the guard I5 and possibly injuring the operator. After the supply of current to the motor H and to the coil 20 is discontinued, the coil as well as the member 3 will become demagnetized, and any particleswhich have gathered on the member l8 will simply drop downwardly to the floor through an outlet duct 24. This outlet duct may simply assume the form of a pipe or tube secured to the lower portion of the guard I5, as indicated in Figure 3.

Needless to say, when the motor I! is used in association with tool grinding wheels, two of the collectors l1 and two outlet ducts 24 should be used, as exemplified in the accompanying drawings.

It is believed that the advantages and use of ried by said magnet and having magnetizable chip collecting surfaces disposed in V'-shaped' formation adjacent the periphery of said wheel;

whereby metallic chips projected by said grind- 15 Number ing wheel into said guard may be attracted by said magnet and collectedi'n said. trough;

4 2. The device as defined in claim 1 wherein said guard includes a downwardly extending chip outlet duct, said magnet being demagnetizable and being disposed above said duct to gravitationally discharge chips through said duct upon demagnetization of said magnet,

ALFRED V. SANDLIN.

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

UNITED STATES PATENTS Name Date 1,007.2'72 Crease Oct. 31, 1911 2,423,287- Beisel July 1, 1947