US44573A

US44573A - Improvement in steam-hammers

Info

Publication number: US44573A
Authority: US
Publication date: 1864-10-04
Anticipated expiration: 1881-10-04

Description

UNITED STATES PATENT OFFICE.

CHARLES W. VVILLARD AND JOHN P. VILLARD, OF CHICAGO,V ILL.

IMPROVEMENT IN STEAM-HAMMEPLS.

Specitication forming part of Letters Patent No. 44,573, dated October 4, 1864.

To all whom t may concern.-

Be it known that we, CHARLES W. VIL- Lann and Jox-1N P. WILLAED, of Chicago, in the county ot' Cook and State of Illinois, have invented a new and Improved Steam Trip- Hammer; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this speciiication, in which- Figure l represents a side elevation of this invention. Fig. 2 is a sectional plan or top view of the same.

Similar letters of reference indicate like parts.

The object of this invention is to simplify the mechanism whereby the motion of the helve or of the hammer is transmitted to the steam-valve and the steam changed automatically at the desired moment.

The invention consists in the employment or use ot' two rollers, adjustable on the yoke in the direction in which the cross-head moves, in combination with a double-inclined cam secured to or moving with the cross-head of the steam-piston, which is connected to the lielve of the hammer in such a manner that by the action of the double-inclined cam on the rollers the steam valve is changed, and by adjusting the rollers up or down on the yoke the stroke of the hammer can be regulated with the greatest accuracy and with' little trouble or loss of time.

A represents a hammer, which is connected to the helve B, that oscillates on the trunnions C in the ordinary manner. D is the steamcylinder, which is situated under the helve, between the-trunnions C and the hammer A,

at asuitable distance from the other to iin' part to the hammer the required maximum stroke. rlhe piston-rod E is secured in the is fastened to one end of the cross head, serves to produce the change of the steam-valve. This cam forms two inclined planes, which strike against rollers b b', attached to the yoke c, and this yoke connects by suitable rods andlinks with the stem d of the valve H.

The yoke c moves between suitable ways, which are secured to one of the uprights Gr, and it is composed ot two vertical and two horizontal bars, as clearly shown in the drawings. The rollers b b are adjustable by means of spring-catches c on the upright bars of the yoke, or, instead ot' these spring-catches, ordinary set-screws or any other suitable mechanism may be employed.

The valve H shown in the drawings belongs to the class of revolving valves; but we do not wish to confine ourselves to any particular kind of valves, since our improvement is applicable to valves ot' any description, though it is desirable to use a balance-valve, which will nove easy and independent of the pressure of the steam to which it is subjected.

When the rollers b b are both at their lowest position, the cam changes the valve after the hammer has ascended a little distance, and the stroke is consequently very short; but if it is desired to increase the stroke of the hammer, the roller b is raised, or the two rollers are placed at ditterent levels, and the greater the vertical distance between said rollers the greater the stroke.

The cam a, instead of being attached to the cross-head, might be connected by suitable means with the helve of the hammer, and the result would be the same.

XVe claim as new and desire to secure by Letters Patent- The rollers b b, adjustable 011 the yoke c, and operating in combination with the cam a, steam-cylinder D, and hammer A, in the man-` ner and for the purpose substantially as herein shown and described.

CHAS. W. VILLARD. JOHN P. WILLARD. Vitnesses:

GEORGE R. H. HUenEs, J oHN l). PYNonoN.