US89790A

US89790A - Improvement in wood-bending machine

Info

Publication number: US89790A
Authority: US
Publication date: 1869-05-04
Anticipated expiration: 1886-05-04

Description

new sara @anni definire.

IMPROVEMENT IN WOOD-BENDING- MACHINE.

The Schedule referred to inthese Letters Patent and making pari: 'of the seme.

To all Iwhom 'it may concern:

Be it known that I, N ATHANIEL PURDY, of the city and county of Milwaukee, and State of Wisconsin, have invented a new and useful Improvement in Vood-Ben ding Machines; and I do hereby declare' that the following is a full, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference heilig had to the accompanying drawing, forming part of this specification, in Which- Figure 1 is a view of'. the machine with a piece of wood in it ready for bending.

Figure 2, a -view ofthe machine with a piece of Wood bent.

Similar' letters of reference in each of the figures indicate corresponding parts. y

The object of my invention is to produce a machine for bending wood in an expeditious manner.`

' A vis the bed-piece.

.B, a iixed standard.

C, Abacking-piece to the bending-band, p

D, c levis, with pin passing through its ends, back of the support C, so that the elevis can slip on the support.Y

E, rope.

F, crank and shaft. o

The shaft is made without any shoulder on it, so that, as the rope E is Wound around it, it can move endways, and thus prevent the rope from riding.

G, pulley. l v H, form over which to bend wood.

I, a thin strip of iron placed between the bending- 'band and the wood.

Q, a block oir-the end of bending-band K, for endpressure.

A peratfion.

The machine, as shown, fig. 1, with the bending band K, with its back support O placed in a perpendicular position, the support C should be thrown back, so as to rest on standard B.v The thin strip of iron I is placed against the bending-band K, its lower end in the loop O. A piece of steamed wood, L, is placed as shown, fig. 1,*the strap N placed so .as to enclose the wood to be bent and the strip I. The clevis D, per- .inanently attached to the rope E, is slipped over snpport C, and secured, by a pin passing through it, back of the support. 'Ihen turn crank F, which winds the rope round the crankshaft, drawing the Wood forward over the form Htil,l it .assumes the position fig; 2. The crank-sliaft being o f a size its whole length, it works endways as the rope Vis wound round it, which prevents the rope fromriding. As the support C and bending-band are drawn tbrward, bringing the wood over the form, the clevis D slips along over support C, toward its end, changing the leverage. When the wood is bent over the form, strap N is brought down so that its ends come over the form, so that a pin can be put through under the projection in the form, which will hold strip I and the. Wood to the form, when the bending-power is removed. Then raise form H and band K, and their attachments, and, as they are raised to an upright position, the wood, owing to its curve, becomes shorter than band K, and thel end-pressure is removed.l Then the Wood, form, and strip I can be removed, and another 'form can be placed in the m chine, and the operation repeated.

What I claim as my invention, and desire to secure by Letters Patent, is-- A Woodbending machine, consisting of the stationary baok-set B, the lever or support G, with its shoulder Q, sliding clevis I), rope E, shoulderless windlass F, pulley G, frame H, and iexible band K, substantially as set forth.

NATHANIEL PURDY. Witnesses:

PnnoY B. SMITH, FRANCIS BENINGHAUSEN.