US87757A - nelson chapman - Google Patents

Description

will never cross,

base swan-neck in form,

NELseN CHAPMAN, or WASHINGTON, Dis'rnler or COLUMBIA.

Leners PaenzrNq. 87,757, daad' mmh 16,1869.

muevan CURTAIN-FIXTURE.

v m schedule mma wm um@ Lem patent ma making' pm ofnie am.

To all 'whom 'ritme/ al concern:

Be it known that I, H. N ELs'oNl CHAPMAN, of Washington city, in thel county of vVl'ashington, and District of Columbia, have invented certain new and useful Improvements in Curtain-Fixtures;

scription of the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, making part of this specification, in which- Figure 1 is a side view of thebraeket, with clampplate, cord, and pulley attached.

Figure 2 is a front view of the same. Figure 3 is aside view of the bracket, in which the same is constructed of an ordinary wire rod.

'Figure 4 isa front view of a shoulder at the 'headv of the screw, to prevent the bracket being inserted in too far into the window-easing. The nature of my invention consists in constructing the bracket, which retains and holds the cord thatelevates the window-fcurtain, of a simple circular rod, the same being made of iron, lbrass, or any other suitable metal, and can be either cast' of wrought. The base of the bracket may bea dat or triangular surface, as shown'in figs. 1 and 2, ora simple rod, as

shown i`n iig. 3. n

In either-ease, it is provided with a gimlet-pointed screw, by means of which it can readily be attached to the window-frame or easement at any desired point.

It will readily be seen, by reference to figs. 1 and 2,. that when the bracket is constructed in the form therein shown, i. e., with a base-plate, that it is susceptible of the highest degree of' ornamentation. l l

My entire bracket consists simplyof three features, the bracket-rod, clamp-plate, and pulley, or swivel. Its construction is of the simplest form possible. It is impossible lfor any feature to become disarranged so as to interfere with its successful either plain or in the mostl e 'aste and artistic style, and in either case at a most triing expense. It can readily be attached at any point desired, and still, owing to the circular rod, and arrangement of clamp-plate thereon,

its angle of bearing can be so adjusted that the cords but always work parallel to each other. This is a most important feature, as it prevents the cords from wearing and fiaying out, as is the case with the brackets now in use.

To enable others skilled in the art to make and use my invention, I will, no w proceed `to describe its construetien and operation. l

A .is the bracket, which maybe made of iron, brass, or 'any other suitable metal, and either cast, wrought, or .struek up.

It may be of any desired form, care alone being taken that its main stem a shall beeircular and of the same diameter throughout.

-It may 4be constructed or deep S -shaped, as shown and I do hereby. declare that the following is a full, clear, and eiract deoperation. It can be made of ordinary wire, having its in fig. 3, or its `main stem or .shaft may bemade in the form of a column, representing in design either of the Well-known forms or styles met within architecture, lexcept the gradual tapering as you approach the top, which must be avoided.

The column, if desired, may Asmall globe or other device, as shown in the drawing.

It may also be provided with a base-plate, B, on which can be represented any scene, figure, or symbol that may be desired. y

It will be seen that the bracket can b'e made not only beautiful in form, but also enriched with the most chaste and elaborate design, and at a most triiiing expense. y 4

' The bracket is provided with a gimlet-pointed-screw,

G, by means of which it can be readily attached to any Window or easement.

be surmounted by a On the bracket, and immediately at the head of the serew-thread, therei's a shoulder, c.

This shoulder maybe either circular, square, triangular, or heart-shaped in form.

It prevents the screw frombein g inserted too far into the frame or easement, and at the same time, after the bracket has been attached, it furnishes a bearing for the same,and prevents all tendency to yield, or give, in an upward direction, brought to bear on the bracket.

D is a clamp-plate, and is made of metal, and in any desired form.

It is provided with a circular opening,

' The diameter of this opening, greater than is the diameter of the stem a vof the bracket A, which allows of its being moved freely along the entire surface of the same.

This clamp-plate D is.a1so provided with a short pin or arm, e, on which is rmly secured, but so secured as to allow of its unobstructed revolution, by means of a Welded head or equivalent device, e', a grooved or furrowed pulley, E.

In the groove on this pulley works the curtain-cord F.

or eye, d. or eye d, is a little It will be observed that my clamp-plateeonsists of ,y

one piece, and 4of one piece only, of at metal.

All joints, pivots, hinges, and lugs, beingunnecessary toits operation, are dispensed with in its construetion.

The bracket A being secured, by means of the screw lO, to the window-frame or easement, the cord F is passed over the pulley E. The clamp-plate D is then brought on a lineat right angles tothe stem a, and moved down the same until the cord Fis taut. The pressure then being removed from the clamp-plate D, the pressure of the cord will draw the clamp-plate out of its rightvangle bearing, and the clamp-plate and pulley Will be rmly held simply by the friction-bearing of the eye of the 'plate on the stem at the desired point, and the greater the strain, the more secure the bearing.

It will be observed that, owing to the' circular formavvhen the strain of the cord is tion of the stem a, no matter what the angle of bearing may be in relation to the upper pulley on the curtain-rod, the clamp-plate can be so adjusted that the cords shall always work perfectly parallel, thus avoiding all crossing, and the consequent wearing and fraying of the same, which wearing and fraying is great, and soon wears out thecord, especially when used in elevating large and heavy curtains.

My improvement has been thoroughly tested, and experience has abundantlyproven its practical utility andcomplete success.

Having thus fully desclibed my invention,

vWhat'I claim therein as new, and desire to secure by Letters Patent of the United States, is

The bracket A, having a circular stein, a, clampplate, D, and pulley, E, when the same are so combined and arranged as to operate substantially as described, as and for the purpose specied.

In testimony whereof7 I have signed 'my name to this specioation, in the presence of two subscribing witnesses.

Witnesses;

EDWIN JAMES, H. G. HOLMEAD.

H. NELSON CHAPMAN.

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