US784726A - Cornice-making machine. - Google Patents

Description

No. 784,726. PATENTED MAR. 14, 1905.

J. W. YATES.

" CORNICEMAKING MACHINE.

APPLIUATION FILED JAN. s, 1905.

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UNITED STATES Patented March 14, 1905.

JOHN W. YATES, OF NEW YORK, N. Y.

CORNICE-MAKING MACHINE.

SPECIFICATIONfOrmng part of Letters Patent No. 784,726, dated March 14, 1905.

Application filed January 3, 1905. Serial No. 239,460.

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Be it known that I, JOHN l/V. YATES, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Cornice- Making Machine, of which the following is a specification.

This invention relates to cornice-making machines.

The object of the invention is to provide a novel form of gage for accurately holding the work positioned relatively to the die orknife in the formation of angles or bends in the construction of cornices, the device being so constructed and arranged as to render it adaptable to cornice-making machines in ordinary use Without requiring any change in their structural arrangement and in which there will be no obstruction or resistance presented to the metal when the angles or bends are being formed. Y

With the above and other objects in view, as will appear as the nature of the invention is better understood. the same consists, generally stated, in a gage of the class described comprising a standard adapted for adjustable connection with a knife-bar of a cornice-making machine, a gage-arm havingapivotal connection with the standard and provided with a seat to receive the edge of the sheet metal to be bent,and a spring coacting with the gagearm and operating normally to hold it in operative position relative to the knife or die and to return the gage-arm to its normal position after having been depressed or rocked by the downward movement of the metal, due to contact therewith of the plunger or female die.

The invention consists, further, in the various noveldetails of construction of a gage for cornice-making machines, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like characters of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed as to shape, proportion, and exact manner of assemblage without departing from the spirit thereof.

In the drawings, Figure l is a View in side elevation of the knife-bar of a cornice-making machine` exhibiting' the gage of the present invention combined therewith. Fig. 2 is a view in transverse section through the knifebar, on an enlarged scale, showing the manner in which the gage coacts with the knife or die in holding the sheet metal properly positioned relatively thereto. Fig. 3 is a detached detail view of the gage. Y

Referring to the drawings, A designates the knife bar or base of an ordinary cornice-making machine, andB a knife or die detachably connected therewith. The knife-bar and knife may be of the usual or any preferred construction, and in lieu of the knife there may be employed a die of any contour; but for the purposes of the present invention a so-called knife is employed which is used when sharp or angular bends are to be imparted to the metal O. As these latter parts may be of the usual or any preferred construction, further description thereof is deemed unnecessary. The web orintermediate portion of the knifebar is provided with a plurality of transverse orifices, in this instance three, in which are secured in any preferred manner seats 1, which project at each side beyond the web, and each has at one side an enlargement or head 2, carrying a set or `jam screw 3.

The present invention resides in the novel form of gage for accurately adjusting or positioning' the metal relatively to the knife or die. rlhis gage comprises an approximately L-shaped arm 4, the lower member 5 of which is adapted to engage a scat l and be held at any desired adjustment therein relatively to the knife-bar bythe set-screw 3. The vertical arm 6 of the gage is disposed at a slight outward-diverging angle relatively to the knife-bar and has its upper end bifurcated to receive the gage-arm 7, which is held in the bifurcation by a rivet or bolt 8. The

longer member 9 of the gage-arm is provided at its free end with a seat l0, in which the metal O is adapted to rest prior to being` bent by the die, and the shorter member 11 of the gage-arm is curved downwardly and occupies IOO a plane that is approximately parallel with the arm 6 of the gage-standard and is engaged by the upger end of a leaf-spring 12, the lower end of which is secured to the arm 6 of the gage-standard by a screw or rivet 13. Generally it will be preferred to employ a leaf-spring` for holding the gage-arm in the position shown in full lines in Figs. 2 and 3; but, as will be obvious, if preferred, a coiled spring may be employed for this purpose, and as this will be readily understood detailed illustration thereof is deemed unnecessary.

1n the use of the gage the gage-standards are adjusted to bring the vertical wall of the seat at the proper distance from the knife, and when this adjustment is secured the setscrews 3 are tightened. The metal C is then placed upon the knife and one edge is brought into engagement with the vertical walls of the seat, thereby securing` the desired adjustment, and as the die or plunger (not shown) descends the metal will be bent, and at the same time the gage-arms will be thrown to the position shown by dotted lines in Fig. Q, and as soon as the metal frees itself from the gage-arms the latter will, through the medium of the springs 11, automatically resume their normal positions, and thus be ready for coaction with another sheet of metal, and so on.

When the knife-bar is used for the formation of cornice-work that does not require the employment of the gages, these may be bodily removed from the knife-bar or may be turned at right angles to their normal position, and thus be out of the way of the operator.

It will be seen from the foregoing description that although the improvements of this invention are simple in character they will be thoroughly effective for the purposes designed and that owing to the manner in which the parts are constructed and arranged liability of damage or breakage is reduced to a minimum.

As herein shown the gage-standard is constructed of metal that is circularin cross-section; but it is to be understood that, if preferred, the metal may be polygonal and still be within the scope of the invention.

Having thus described the invention, what is claimed isu 1. A device of the class described comprising an approximately L-shaped standard, the upper end of which is .bifurcated, a gage pivoted in the bifurcation and provided at one end with a work-engaging seat and at its opposite end with a downward-curved projection, and a spring secured to the standard and engaging the projection.

2. In a cornice-making machine, the combination with a knife-bar and a seat secured thereto and carrying clamping means, of an approximately L-shaped gage one member of which engages the seat, and the other member of which projects upward beyond the knife-bar, a gage pivotally connected with the standard and having one end provided' with a work-engaging seat and at its other end with a downward-curved projection, and a spring secured to the standard and having one of its terminals in engagement with the projection.

In testimony that 1 claim the foregoing as my own 1 have hereto aiiixed my signature in the presence of two witnesses.

JOHN WV. YATES.

l/Vitnesses:

E. H. VAN Soi-MICK, P. M. Beur..

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