US1432362A - Electromagnetic power anvil block for riveting - Google Patents

Description

P. G. SIGDND, DECD.

M. SIGOND, ADMINISIRATHIX.

ELECTROMAGNETIC POWER ANVIL BLOCK FUR RIVETING.

APPLICATION FILED JAN, 4, 1921.

Patented Get. 11?,

UNITED STATES FATENT @FFHQE.

PAUL Gl-USTAV'E SIGQND, @155 SAN FRANCISCU, CALIFORNIA; MARGUERITE SEND ADMINTSTRATBKX GI? SAID PAUL GUSTAVE SIGQND, DECEASED.

ELECTROMAGNETIC POWER ANVIL BLOCK TOR EIVETING.

Application filed January 4, 1921. Serial No. 435,039.

To all whom it may concern:

, Be it known that T, PAUL Gos'ravr. SreoNn, a citizen of the United States, resident of San Francisco, county of San Francisco, and State of California, have invented a new and useful Electromagnetic Power Anvil Block for Riveting, of which the following is a specification.

My invention relates in general to riveting devices and has reference more particularly to an improved anvil block for such devices.

As heretofore practiced rivets are usually held by various means while their opposite ends are headed, but these known devices for holding the rivets are exceedingly inconvenient to use especially working an undue hardship on the one holding the rivet head against the action of the riveting tool and owing to the inconvenience thus experienced, the present known methods fall short of providing a practical solution of the problems involved.

The primary object of my invention is to provide means which, while manipulated to a certain extent by an operator, possesses certain features which enables the same to be primarily self-operated at least to an extent that it will not require unusual difiiculty in using the same.

A further object of the invention is to produce a device which will enable the work to be carried out very much faster and at a greater saving of expense than has heretofore been possible with the means now employed.

The invention possesses other features which will be apparent as the description proceeds with reference to the acompanying drawing.

In said drawing I Fi ure 1 is a vertical section on the line 11 igure 2;

Figure 2 is a top plan view;

Figure 3 is a cross section on the'lme 3-3 Figure 1 and Figure 4 is a bottom plan view.

Referring now to the drawing in detail the invention in its preferred form includes an electro-magnetic anvil block and its use is more or less limited as a holding device for rivets while the opposite ends of the V rivets are being headed.

Ordinarily, in riveting steel plates and the 'ing rod (1-5).

like together, the operation is carried out by a riveter and his helper. One of these mechanics holds an anvil against the rivet head while the other heads over the opposite ends of the rivet with a riveting tool.

This operation usually works a hardship upon the helper and the incessant jar lIlCI- dent to holding the anvil results in physical strains which produce muscular and body ailments and in all is extremely tiresome work.

According to my invention all these inconveniences are done away with by providing an electro-magnetic hold-on device which embodies in its construction, a suitable "anvil block. So far as concerns, the present embodiment (5) and (6) represent the plates which are to be riveted together by a rivet (8) having a head The rivet is passed through openings in the plates with its opposite end adapted to be riveted over by a riveting tool such as (10). The anvil block (11) is shown as including a cylindrical solid piece of metal having a central depression as at (12) made to conform to the shape or the rivet head (9) and adapted to receive the same. The opposite end of the block is rovided with an internal threaded opening as at (13) to receive the threaded end (14) of the connect- The connecting rod is housed within the elongated jacket (16) with its opposite end protruding through the screw plu (17) and with a nut and washer device ('18 on the end to provide an abutment. The elongated jacket (16) is divided by the cross piece (19), the coil spring (20) housed in the upper half of the division and a second coil spring-(21) housed in the lower half. The jacket (16) forms an integral a.

part of the cover plate '(22 with the In (17) threaded therein. p g

Arranged in circular formation with their upper ends fixed to the cover plate (22) are a series of electro-magnets (23).

The lower ends of the magnets are mounted to a metal block (24) by the threaded plugs (25). Binding posts (26) are arranged for each one of the gnets, so that an electric current may be conducted to the same. The metal block (24) is circular in shape with its sidesdished out as shown so that its contact area or face (27 is relatively thin in cross section.

' head (9) A suitable handle (28) may be provided for manipulating the device. From the above it will be seen that when the contact face (27) with the block (24) is pressed against the plates to be riveted together and by conducting the current to the electromagnets, the device will be maintained against the plate by magnetic power.

The influence of the springs (20) and (21) will maintain the anvil block (11) over the of the rivet, so that the tool (10) may rivet over the opposite end of the rivet. The springs act as shock absorbers to prevent the device from becoming jar loose and in this connection it is to be noted that the tendency of the springs isto absorb the shock in two opposite directions.

From the above it will be readily seen that the device will take the place of the ordinary method of holding the rivet head and it will do away with the inconvenient methods now employed.

I wish it to be understood that there must not be any limit to the form of construction v neeaeea of the tool whether it is a mechanical or magnetic power device. 7

A suitable switch may be provided in the handle for operating the tool.

I claim:

In a device of the class described, a plurality of electro-magnets arranged in spaced relation around a substantially cylindrical mounting including a contact block adapted to hold the device against a metal surface by magnetic power, an anvil block surrounded by said magnets and adapted to bear against the head or": a rivet, said anvil block having a connecting rod extending into an elongated jacket, a cross piece intermediate the ends of said connecting rod, a pair of coil springs, one arranged above and below said cross piece with their opposite ends bearing against the top and bottom of said elongated jacket, said coil springs comprising a shock absorbing means operatively associated with the anvil block, substantially as and for the purpose described.

. PAUL GUSTAVE SIGUND.

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