US60071A - William c - Google Patents

Description

W. C. SHERMAN.

Thin-Coupling;

Patented Nov. 27. 1866.

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' SPECIFICATION.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, WILLIAM C. SHERMAN, of Boston, in the county of Sufi'o'lk, and State of Massachusetts,

have invented an Improvement in Shaft Attachments, the same being a new and useful invention and I do hereby declare that the following is a full and exact description of the construction andamodd of use of the same, reference being had to the accompanying drawings, and to the letters and figures marked thereon.

' Figure I is a vertical section of one shaft of a pair of shafts.

Figure II, vertical section of the shaft, the outer end being depressed; Figure III represents the axle-tree, or the drawbar to which the shafts are attached. A The object of my invention is to provide a ready and convenient mode of 'attaching and detaching the shafts of carriages, and at the same time insure perfect safety, the parts being so constructed that the shafts a cannot be removed from the draw-bar while they are horizontal and in the position they occupy when supported at the sides of the horse. ;'My invention is especially applicable to vehicles that are used with'a pole for two horses, which requires to be taken out and-two shafts put in when 'a single horse is to be'used. Each of the t 1 1 two shafts is usually attached to a carriage by means of a bolt having a head at one end and a screw-nut at the other; this nut often works loose and falls ofl'; the bolt then comes out and one of the-shafts falls, thus causing serious accidents.

In my improvement the iron bolt, D, has a fixed head or projection at both ends, and is a fixturein the draw-bar, B A. The whole draught or strain comes upon this bolt, and the rear end of :theshaft is in contact with it at the curvedpart, E, which is either a part of the shaft, S Q P, or it-may be a separate piece of iron properly secured to the shaft. Onits front edge there is a recess,,near ly circular, to receive thebolt, D, and opposite to the recess is the free end, G, of the spring, I H G. The fixed .en d, I, of this springis secured to the under side of the shaft by the screw 0 and the free end is allowed to open or is held closed by the screw-bolt and nut, L N. t

The draw-bar is usually made with two side pieces, which enclose the flattened end, E, of the shaft; the 1 ends of draw-bolt D are supported in these side pieces, and the shaft can; move freely on the bolt D as a centre. In the rear of the curved part, E, there is a small cavity or recess in the .draw-bar tol -receive a smallpiece of India rubber, C; the small shoulder, J, formed on the shaft is just above it, and it bears against thepart E and prevents jarring and noise;

When the shafts are to be put in or taken out they are depressed, as in Fig. II, the nut, N, is started back from the spring, the-mouth, Y, is thrust against the bolt, D, which enters its seat in the part E the nut, N, is i then turned back against the spring and lieeps the mouth, Y, closed. It will be noticed that-when the shafts are horizontal the shoulder, J, compresses the India rubber, G, and makes a close :fi't of all the parts.

What I claim as my invention, anddesire to secure by Letters Patent,: is

The hook E taking a solid bearing on the lower part of the draw-bar, in combination with spring Gyshouldttt l J, and rubber pad G, all constructed, arranged, and operating substantially as described. p

WILLIAM G. SHERMAN. [sun-.1

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