US78416A - Improvement in thills and poles foe carriages - Google Patents

Description

J. "M BICKNELL.

Carriage Pole and Thll.

Patented June 2. 1868.

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JAMin-s W. BicKNvnLL, or New Yoan, N. Y]

Letters Patent No. 78,416, dated Jima 2, 1868.

IMPROVEMENT IN TEILLS AND POLES FOR GARRIAGIS.,

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'IO- ALL WIIOM IT MAY GONCERN:

Be it known that I, JAMES W. BICKNELL, of the city, county, and State of New York, have invented a new and useful Improvement in Thills and Poles for Vehicles; and I do hereby'declare that the following is a full, clear, and exact description of the shame, reference boing had to the accompanying drawing, which forms part of this specification. A

The nature of my invention consists in constructing thills or shafts and poles for road\..ay-vehicles of tubular metal, whereby I gain great strength, durability, and lightness.

In the accompanying drawing- Figure l is a plan view of the thills or shafts of an ordinary wagon, in which figure parts are shown in section, and'portionsbroken away, to more readily show the construction thereof. l

Figure 2 is a transverse vertical section, taken on the plane of the line x es, iig. l, looking in the direction of the red arrows marked thereon.

To properly construct the thills or shafts and poles of vehicles, much expense is incurred. They must, in

all cases, be as light or small as the ease will admit of, in order to give the proper strength. lAlmost invariah y, itis necessary to secure along the sides or top, or 1ooth, of the same a strip of metal. This increases greatly the' expense of their manufacture, and'dcstroys, in a great measure, the symmetry of the shafts or thills. If this be not done, there is constant danger of their breaking, and the subsequent expense of repairing. vTo provide something durable, strong, and light,lis, therefore, the object of my invention.

A designates the two chills or shafts of a four-wheeled vehicle. 'Ihc said thills or shafts are made of tubular metal. 'lo these are given the usual or any desired curves or shape.V There are so many ways of attaching theA \tl1ills, as well as a pole, te a vehicle, that I have thought it only necessary to illustrate ene simple 'way of doing this, similar to the `manner in which cart-'chills are connected to their axles. The rear end-of each tubular thill or shaft is provided with an external screw-thread, which works in a female screw cut in a clip whiclr'surrounds the axle at the proper points; hut, usually, it will be necessary to provide the end of each thill with an eye, linked in a staple secured to the axle. This would allowthe thills to be raised'up and down in the usual way. Poles for vehicles made of tubular metal may he secured in any of the usual ways.

IS designates a cross-brace, for strengthening the shafts. It is also of tubular metal, and has a screw-'thread cut upon each end, which screws in'to a clip, I?, surrounding the shafts.

My tubular metallic thills or shafts and poles can he made of light metal for light carriages, and still he stronger and lighter than if made of wood.

I do not limit myself to making the entire thill, shaft, or pole, of metal, for it may he desirable to use wood for a part of the same, and tubular metal for the other part; and I will here remark that a vehicle with such shafts I have had in actual use, and the universal judgment of those who have seen it has heen that the tubular metal shaft is far superior, in'many respects, to an entirely wooden shaft, or one strengthened by strips of metal.

' What I claim as my invention, and desire to secure by Letters Patent, is

Thills,-or shafts, or poles, of vehicles, made, in whole or in part, of tubular metal, substantially as herein specified.

J. W.' BICKNELL.

Witnesses:

M. M. LIVINGSTON, JOHN 1l. Coorrn.

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