US1335223A

US1335223A - Guard for grinding-wheels and similar rotating bodies

Info

Publication number: US1335223A
Application number: US268368A
Authority: US
Inventors: Dellgren Karl
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-12-26
Filing date: 1918-12-26
Publication date: 1920-03-30
Anticipated expiration: 1937-03-30

Description

K. DELLGREN.

GUARD FOR GRINDING WHEELS AND SIMILAR ROTATING BO DIE S.

APPLICATION FILED DEC.26, 1918- I I 1,335,223. Pdtentd Mar. 30,1920,

'KARL DELLGREN, OF VASTERVIK, SWEDEN.

GUARDFOR GRINDING-WHEELS AND'SIMILAR ROTATING BODIES.

Specification of Letters Patent. Patented M31330, 1920.

Application fiIe'd'D ecember 26, 1918. Serial No. 268,368.

To all whom it mayconoem:

Be it known that I, KARL DELLGREN, a citizen of the Kingdom of Sweden, residing at Vastervik, Sweden, have invented new and useful Improvements in Guards for Grinding-VVheelS and Similar Rotating Bodies, of which the following is a specification.

This invention relates to guards for grinding wheels and similar rotating bodies.

The principal object of the invention is to provide a guard of this kind adapted to prevent damages caused by the flying off of the rotating body.

Another object is guard possessing a certain degree of elasticity and adapted to be adjusted in conformity with the diameter of the. rotating body according as its diameter decreases, owing to the wear of the body.

The invention consists, chiefly, in the combination of an adjustable frame, transverse bolts in said frame, two adjustable arcuate plates overlapping each other and bearing against said bolts, and one or more elastic members, as for instance wires, attached to said frame and surrounding said plates, so as to press them against the transverse bolts of the frame.

A preferred embodiment of the invention is illustrated in the accompanying drawing in which- Figure 1 is a sideview of a guard constructed in conformity with the invention. Fig. 2 shows a front view of the same guard.

Referring to the drawing, the dotted line 1 denotes a rotating body for instance a grinding wheel. Placed at a distance apart from said body and extending along its periphery is a strap made for instance of sheet iron or the like. In the embodiment shown in the drawing the strap consists of two

parts

2 and 3 overlapping each other at the ends 4. Bearing against the outer side of the

strap

2, 3 are one or more elastic members, as for instance wires, spiral springs or the like, extending in peripheral direction. In the embodiment shown said elastic members consist of two wires'5 and 6 placed side by side. The guard constructed in the manner described is supported by a frame arranged. as follows:

Disposed at each side of the rotating body 1 and at the center thereof is a plate 7 and 8 respectively, each of said plates being prothe provision of such a vided with an aperture 9 enabling the frame to be slid onto the shaft of the rotating body. Secured to each plate 7 and 8 are a 7 number of arms, two of which 10 and 11 at each plate are connected with the corresponding plate, the other ends of said

arms

10 and 11 being spaced apart so as to render the periphery of the grinding wheel accessible through the interspace between the

arms

10 and 11. Passed through the lastnamed ends of the

arms

10 and 11 are bolts 1.2 and 13, to which, on the one hand, the

wires

5 and 6 and, on the other hand, the free ends of the

strap

2, 3 are secured. Thus the

bolts

12 and 13 together with the

arms

10 and 11 support the ends of the

wires

5 and 6 and the free ends of the

strap

2, 3. Extending from each plate 7, 8 are two

arms

14 and 15 secured to the corresponding plate and through the outer ends of which are passed

bolts

16 and 17 respectively supporting other points of the

strap

2, 3. Furthermore, the ends of a stirrup 18 placed outside the

strap

2, 3 are attached to the plates 7 and 8. As will appear from the drawing, the wires 5 and '6 are wrapped about the portion 19 of the stirrup situated outside the strap, the wires being prevented from sliding on the

strap

2, 3 by means of a plate 20 bearing against the wires and retained against the same by screw 21 screwed into the portion 19.

To the plate 7 or to both plates 7 and 8 a rod or arm 22 may be fixed by means of which the guard may be attached to the frame supporting the rotating body.

In all the

arms

10, 11, 14 and 15 and in the stirrup 18 apertures 23 are provided. By placing the screws 24: connecting the arms and the stirrup with the plates 7 and 8 in different apertures 23, the guard may be adjusted, as desired, to the decrease of the diameter of the rotating body owing to the use of the same.

The principal advantage attained by a guard constructed as described above consists in this that the guard, on account of the elasticity of the

members

5 and 6, is capable of catching the fragments in case of the rotating body flying off, without necessitating the

strap

2, 3 to be made of a material. possessing a particularly high degree of resistibility.

Having now particularly described and ascertained the nature of my said invention and in What manner'the same is to be performed, I declare that What I claim is 1. A guard for grinding disks and the like, comprising a frame, arcuate adjustable plates mounted on the frame concentric to the disk, and reinforcing Wires extending around the plates and connected at their ends to the frame thereby binding the plates onto the frame. 32. In a guard for grinding disks and the like, a frame consisting of side plates havingapertures to receive the shaft of the disk,

a stirrup connecting the plates on opposite posite sides of the disk, arcuate plates passing between the disk andstirrup, and Wires connected to the stirrup extending over the arcuate plates for binding the latter onto the connecting bolts.

name.

In testimony whereof I have signed my KARL 'DELLGREN. i