US578640A - Tin hurdle - Google Patents

Description

(No Model.)

A. J. M. HURDLE.

CHILD'S CARRIAGE. No. 578,640. Patented Mar; 9, 1897.

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. r d M E F l w o W WITNESSES,

UNITED STATES PATENT FFICE.

ARABELLA JULIA MARTIN HURDLE, OF SOUTHAMPTON, ENGLAND.

CHILDS CARRIAGE.

SPECIFICATION forming part of Letters Patent No. 578,640, dated March 9, 1897.

Application filed July 21, 1896. Serial No. 599,993- (No model.)

To all whom it may concern.

Be it known that I, ARABELLA JULIA MAR- TIN HURDLE, of 3 Portland Street, Southampton, England, have invented new and useful Improvements in Childrens Mail-Carts, of

which the following is a full, clear, and exact drawings, forming part of this specification,

wherein- Figure 1 is a side View of the preferred form of the joint, partly in section to show the internal construction, the parts being in the straight position and the joint locked rigid. Fig. 2 is a similar view, the joint being loose and the handle at an angle to the main frame. Fig. 3 is a plan view of the joint. Fig. 4 is a horizontal section of a form of joint which is tightened by the expansion of the innermemher.

A is the side-bar of the main frame, and B one of the shaft-handles of a childs so-called mail-cart, made separate from the side-bar A (instead of being a continuation thereof, as usual) and connected thereto by a joint formed of metal shoes 0 D, respectively attached to the abutting ends of the parts A B. The part 0 is provided with an inner cylindrical member or boss E, fixed therein so as to be incapable of turning by the squared ends 6 of its core being received in correspondin g holes in the cheek-plates of the shoe 0. The part D has affixed to it a steel strap F,which embraces and is adapted to be drawn tight about the boss E, preferably by means of a bent lever G, pivoted at g in the cheekplates of the shoe D and bearing, by its short arm 9, which acts in the manner of a cam, upon the projecting lip f at the free end of the strap F. The arrangement is such that when the short arm g acts with maximum effect the clip Will be clasped so tight about the boss E that the joint will be quite rigid, while when the lever G is turned down, as shown in Fig. 2, the strap F springs open sufficiently to loosen the joint.

The inner member or boss E is made, preferably, of an iron core of square section, about which a cylinder of india-rubber is vulcanized, the inner portion being vulcanized hard and the outer superficial portion (shown by the lighter shading) being soft and elastic, so as ,to enable the strap F to obtain a firm grip Without liability of slipping. The core is traversed by a center bolt H, which passes through holes in the cheeks of the shoe D and forms the joint-pivot when the strap is slackened. I prefer to make the boss E of two qualities of rubber, as described, but do not limit myself to that material, as the boss might be made of wood.

In Fig. at the boss is formed of a wedge-like segment J, attached at its base to the inside of one of the outer cheeks and fitting between two other segments J J, together making up a cylinder, the boss being encircled bya tubular sleeve E, of rubber, fitting within a cylindrical socket 0 upon, say, the bar A, and adapted to be tightened rigidly therein by the longitudinal motion of the wedge J under the pressure of a fly-nut K, screwing upon an axial bolt 70, whereby the wedge-like segment J is forced between the outer segments J, the wedge J being attached at its base to the one cheek d and the other cheek dbearing against the bases of the segments J, so that by the longitudinal motion of the wedge J the segmental boss and rubber are expanded, the outer cheeks CZ (l of the shoe attached to, say, the shaft B being capable of yielding sufficiently to allow of the slight motion required. The wedge J being attached to one of the cheeks d, the cylindrical boss, like thesocket C, is incapable of turning independently of the part to which it is attached, so that when the boss is contracted the one may turn freely in or on the other. The joint is rendered rigid by the expansion of the boss in the socket.

I claim 1. A joint for adjustably connecting the shaft-handle to a childs mail-cart, said joint being constructed of a cylindrical inner member or boss fixed immovably in position between the cheeks of the one part or shoe and an encircling spring-strap fixed to the other part or shoe, in combination With a bent lever pivoted between the cheeks of the said shoe and adapted to act on a lip at the free end of the spring-strap, in such manner as to draw it tight about the boss and so render the joint rigid as described.

2. A joint for adjustably connecting the shaft-handle to a childs mail cart, comprisin g a shoe provided With cheek-pieces having angular openings therein, an apertured cylinder having angular ends fitting in the openings of the cheek-pieces, a second shoe having cheek-pieces, a bolt passing through the cheek-pieces of the second shoe and the cylinder, a strap having one end secured to the said second shoe and passing around the cy1-- inder, and a pivoted lever engaging the free end of the said strap, substantially as described.

3. A joint for adjustably connecting the shaft-handle to a childs mail-cart, consisting of a shoe adapted to be secured to the frame and provided with cheek-pieces having angular openings therein, an apertured cylinder having angular ends fitting in the openings of the cheek-pieces, a second shoe adapted to be secured to the thill-handle and provided with cheekpieces, a bolt passing through the cylinder and the cheek-pieces of the thillhandle, a springstrap having one end secured to the shoe of the thill-handle passing around the cylinder and provided With a lip at its free end, and a bent lever pivoted to the shoe of the thill -handle and engaging with its end the lip of the strap, substantially as herein shown and described.

ARABELLA JULIA MARTIN HURDLE.

In presence of- FRED C. HARRIS, J OSEPH LAKE.

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