US552784A

US552784A - Machine for cutting off i-beams

Info

Publication number: US552784A
Authority: US
Publication date: 1896-01-07
Anticipated expiration: 1913-01-07

Description

(No Model.)

' G. H. SHELDON.

MACHINE. FOR CUTTING OFF I-BEAMS.

No. 552,784.. I Patented Janf 7,1896.

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.UNITED STATES PATENT ()FFICE,

GEORGE II. SHELDON, 'OF Cl-IELMSFORD, MASSACHUSETTS.

MACHINE FOR CUTTING OFF I-BEAMS.

SPECIFICATION forming part of Letters Patent No. 552,784, dated January 7, 1896.

Application filed May 20, 1895. Serial No. 549,871. (No model.)

To aZZ whom zit may concern.-

Be it known that I, GEORGE I'I. SHELDON, a citizen of the United States, and a resident of North Chelmsford, in the county of MiddleseX and State of Massachusetts, have invented new and useful Improvements in Machines for Cutting Off I-Beams, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to an improved machine for cutting off metal I-beams, and it is carried out as follows, reference being had to the accompanying drawings, wherein-- Figure 1 represents a front elevation of the improved machine, showing the upper mov-.

able shear raised. Fig. 2 represents a side elevation of Fig. 1. Fig. Srepresents a front elevation of the improved machine, showing the upper shear in its lowest position. Fig. 4. represents a vertical section 011 the line 4: 4, shown in Fig. 3; and Fig. 5 represents a vertical section on the line 5 5, shown in Fig.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

In the drawings, Arepresents the lower stationary bed of a metal-shearing machine to which is attached in a suitable manner the stationary lower shear B.

0 represents the vertically-movable head of a shearing-machine to which is attached in a suitable manner the vertically-movable shear D, as shown.

The I-beam that is to be cut off by the shearing-machine has a web E and vertical end.

flanges E E, as is common in metal beams of this kind. The lower stationary shear B is provided with recesses b b, adapted to receive the lower portions of the end flanges E E of the I-beam, as shown, and said lower shear B has a middle flat portion 1), upon which the under side of the web E of the I-beam is supported during the shearing operation. In a like manner the upper movable shear D is provided with recesses (1 cl, adapted to fit, or nearly so, the upper portions of the end flanges E E of the I-beam shown, and has likewise a middle flat portion 61, adapted to fit against the upper side of the web E of the I-beam when brought in contact with it during the descent of said upper shear. The throw of the movable shear D is such as to cause its lower edge d to pass by the upper edge 6 of the stationary shear B a short distance, as shown in section in Fig. 4:, and thus cause the web E of the I-beam to be entirelycut through at or about the same time as the end flanges E E of said I-beam are partially cut through by the movement of the upper shear relative to the lower stationary one.

In the operation of cutting off I-beams by my improved machine and method the upper shear D is raised, after which the beam is laid on the lower shear B with its web E resting on the flat portion 1) and the lower portions of the end flanges E E resting in the recesses 17 b in the said lower shear B, as fully shown in Figs. 1 and 2. The upper shear D is then made to descend sufficiently to cause its lower edge (1 to pass entirely by the upper edge I) of the stationary shear B, by which the web E of the I-beam is cut entirely through, while at the same time the end flanges E E of the I-beam are only partially cut through, as shown at e e in Fig. 5, leaving a middle portion (shown by the irregular line 6 in Fig. 5) unsheared; but owing to the nature of the metal of which the I-beam is made, the action of the shears by partially cutting through said end flanges, the middle uncut portion thereof will be caused to be torn or broken ofi, thus severing the ends of the I-beam withoutcompleting the shearing process. By this arrangement and method I'beams of any size may be cut off in a shearing-machine with a minimum of vertical movement of the head to which the movable shear is attached.

It is immaterial in a machine of this kind whether or not one or both of the shears are movable or whether or not the line of out is in a vertical or other direction.

WVhat I wish to secure by Letters Patent and claim is A cutting off machine for I-beams, consisting of shears 13, D, arranged in different ver* tical planes and having coincident recesses b, (1, adapted for the reception of the end flanges of the I-beams, each co-incident pair of said recesses having a combined depth less than the length of the end flanges of the I-beam to be cut, the recesses d, d, being of less depth two subscribing Witnesses, on this 16th day than the recesses Z), 1), whereby at a full stroke of May, A. D. 1895.

of the shears the Web is completely severed but the flanges are only partially cut, sub- GEORGE II. SHELDON.

\Vitnesses:

5 stantially as described.

In testimony whereof I have signed my ALBAN ANDREN, name to this specification, in the presence of LAURITZ N. MILLER.