US264567A - Sheet-metal-bending machine - Google Patents

Description

1 (R0 Model.)

' G. ROAGH. SHEET METAL BENDING MAGHINB.

Patented Sept. '19, 1-882.

PATENT O FICE.

CHESTER ROACH, OF MINNEAPOLIS, MINNESOTA.

SH EET-METAL-BENDJNGI MACHINE.

SPECIFICATION forming part of Letters Patent No. 264,567, dated-September 19, 1882,

Application filed July 22, 1882. (No model.) I

To all whom it may concern:

Be it known that I, CHESTER ROACH, of Minneapolis, in the'county of Hennepin and State of Minnesota, hav.e invented .a new and Improved Sheet-Metal-Be11ding Machine; and I hereby declare the following to be a full, clear, and exact description thereof, reference being bad to the accompanying drawings, making part of this specification, in which-- Figure 1 isva front view of the machine. Fig. 2 is a side elevation. Fig. 3 is a cross-sectional view through the rollers with a sheet of metal inserted to be bent. Fig. 4 is a view of the same with the metal sheet bent. Fig. 5 is a top plan view ot' one end of the machine.

The object of my invention isfto provide a machine which will withfacility and certainty bend or fold sheet-ironor other sheet metals,

and my invention consists in a pair of'rollers, one bearing a holding-lip and the other a projecting tang or rib which are mounted in a frame and so geared that by means of segmental cogs and a crank the rollers revolve toward each other, and as the rib approaches the holding-lip the metal sheet is bent back over the lip by a kind of rubbing-pressure, allot which is hereinafter fully described, and specifically pointed out in the claims.

In order that those skilled in the art may makeand use my invention, I will proceed to describe the manner in which 1 have carried it out.

In the said drawings, AA represent a frame,

' in the upperqend of which are journaled two rollers, B G, with their axes in the same plane. The front roller,B,has inserted in its circumference in a longitudinal central line a projecting rib, b, andin the back roller, 0, within a recess, 0, is set a removable holding-lip, d, conforming in some degree to the outline of the roller, and beneath this lip is a space,f, to receive the edge of the sheet-metal plate to be folded. As the thickness of lip 01 determines the space within the bight of the bent edge of the metal sheet,lips of varying thickness may be inserted at will to obtain various-sized bights. On the ends of the journals of rollers B and G are segmental cogs g h, which, by means of a handle on the back roller, 0, operate both rollers simultaneously, their revolution being toward each other. One of the cogs, g, is fitted to the spindle-by means of a collar and set-screw, so it may be adjusted in relation to the rib on roller 13..

The operation is as follows: The rollers being in the position seen in Fig.3,the sheet of metal S is inserted edgewise within the space beneath lip d and resting on rib b. The operator then seizes handle 6, and bringing it toward him the rollers are revolved and rib b and lip "d approach each other until the end of rib b rests upon the ed geof lip d, carrying the sheet of metal over until the fold 0 is made, as seen in Fig. 4. The handle is then pushed back, the rollers retracted, and the folded sheet withdrawn from lip 61. The handle or crank consists of a square bar, N, which passes through a square hole in a hub, N, on the journal of roller O,it being secured to the hub at any desired point of its length by means of a setscrew, m, whereby the amountof leverage may be increased or diminished.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a sheet-mctal-folding machine, the longitudinally-ribbed roller B, in combination with the roller 0, provided with the longitudinal holding-lip 01, substantially as and for the purpose described.

2. In a sheet-metal-bending machine, the roller 0, provided with a segmental cog, h, in combination with roller B, carrying rib or tang b,and the adjustable segmental cog g,provided with collar and set-screw, all constructed, arranged, and operated as specified.

UHESTER ROAGH.

. Witnesses: FRED P. FOSTER E. W. RossMAN.

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