US8989A - Vertical trip-hammer - Google Patents

Vertical trip-hammer Download PDF

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US8989A
US8989A US8989DA US8989A US 8989 A US8989 A US 8989A US 8989D A US8989D A US 8989DA US 8989 A US8989 A US 8989A
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Prior art keywords
rollers
hammer
recessed
shaft
plain
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/02Special design or construction
    • B21J7/10Special design or construction with both drive and hammer connected to a fulcrumed lever, e.g. tail hammers
    • B21J7/12Special design or construction with both drive and hammer connected to a fulcrumed lever, e.g. tail hammers the lever being a spring, i.e. spring hammers

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  • PETERS Phclo-Ulhugraphar. Waxhingmm 0.0.
  • Figure 1 is a front elevation of one of our improved trip hammers; this view shows the hammer in an elevated position, and ready to give a light blow. And also shows the position that the recessed rollers occupy, when it is desired to give a very powerful blow, in dotted lines.
  • Figure 1 is a front elevation of one of our improved trip hammers; this view shows the hammer in an elevated position, and ready to give a light blow. And also shows the position that the recessed rollers occupy, when it is desired to give a very powerful blow, in dotted lines.
  • Fig. 2 is a vertical transverse section of the same, taken in the line m, m, in Fig. 1.
  • Fig. 3 is a detached view showing the lifting rollers and the hammer in section, and the position that one of the rollers occupies, when thrown out by the recessed rollers, in red lines, which are somewhat exaggerated so as to show more distinctly the manner in which the hammer is allowed to fall and assume the position shown in dotted lines.
  • Fig. 4 is a detached section of one of the recessed and plain rollers that cause the lifting rollers to take hold of the handle of the hammer when it is desired to raise it, the dotted lines in the view showing the position of the revolving shaft and plain roller when the hammer is falling, and
  • Fig. 5 represents a broken vertical section, taken in the line 1, y, in
  • FIG. 1 this view shows aportion of the: frame and one of the sliding boxes and.
  • the periphery of the recessed rollers of difierent lengths or rather making the first recess extend nearly one half the distance around the circumference of the recessed rollers, the second recess one third, and the third recess one quarter the distance around the same, according to the force of blow required.
  • the recessed rollers it is necessary for the recessed rollers to be movable so as to slide on their shaft back and forth; when the lever is raised or lowered.
  • A represents the frame which may be of the form represented, or of any. other more suitable.
  • the shafts B which we will suppose to be on the front part of the machine, has its journals secured and turning in stationary bearings or boxes a, a, of the frame A, and on the first shaft the lifting roller C, is secured, near its center, and also the two recessed rollers D, D. Secured on it, near its ends, these rollers all turn with the revolving shaft B.
  • rollers D, D may each have one, two, three, or more recesses Z), c, d, out in their periphery, and that lettered b, may be double the length of that lettered (Z, and that lettered a, may be one third longer than that d; the object in making these recesses of different lengths around the periphery of the rollers, is that of regulating the blow of the hammer when it is desired to forge different kinds of work.
  • The. other horizontal shaft B which is back of that B, has its journals secured and turning in movable bearings or boxes f, and has the lifting roller C secured on it, in line with that 0, and has, also, the plain rollers D secured on it, near its ends and directlyopposite the recessed rollers, in such a position that no matter what may be the position of the reso placed or arranged that they are made to bear on, or touch one end of the sliding or movable boxes in which the journals of the shaft B are secured.
  • the object of these springs is that of forcing or pressing the shaft B, or boxes f, back to their proper position, as the hammer is being raised, and also allowing the shaft B, and boxes f, to be forced outward to the position shown in red lines in Fig. 5, so as to permit the hammer to fall to its position on the anvil at the proper time.
  • Z, m, n, 0, are rollers which serve to guide shaft I, of the hammer I, and also to diminish friction when the hammer is rising or falling.
  • This machine may be either driven by hand or steam power, motion being communicated to the pulley K, which communicates mot-ion to the cog gearing L, L, arranged on the shafts B B.
  • springs H for controlling the operation of the lifting rollers, the projections on the Y of said recessed rollers causing the shaft B, lifting roller 0, and plain rollers, D, D, to recede or move from the rollers on the shaft B, and thereby allow of the hammer fall, the whole being constructed and arranged and operating substantially as herein described.

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  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Description

STE-BBINS & HOLMES. Drop Hammer.
No. 8,989. Patented June 1, I852.
N. PETERS Phclo-Ulhugraphar. Waxhingmm 0.0.
UNITED STATES PATENT QFFTQE.
PETER STEBBINS AND JOHN HOLMES, OF SOHENEOTADY, NEW YORK.
VERTICAL TRIP-HAMMER.
Specification of Letters Patent No. 8,989, dated. June 1, 1852.
To all whom it may concern:
Be it known that we, PETER STEnnINs and JOHN HOLMES, both of Schenectady, in the county of Schenectady and State of New York, have invented certain new and useful Improvements in Trip-Hammers; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a front elevation of one of our improved trip hammers; this view shows the hammer in an elevated position, and ready to give a light blow. And also shows the position that the recessed rollers occupy, when it is desired to give a very powerful blow, in dotted lines. Fig. 2, is a vertical transverse section of the same, taken in the line m, m, in Fig. 1. Fig. 3, is a detached view showing the lifting rollers and the hammer in section, and the position that one of the rollers occupies, when thrown out by the recessed rollers, in red lines, which are somewhat exaggerated so as to show more distinctly the manner in which the hammer is allowed to fall and assume the position shown in dotted lines. Fig. 4, is a detached section of one of the recessed and plain rollers that cause the lifting rollers to take hold of the handle of the hammer when it is desired to raise it, the dotted lines in the view showing the position of the revolving shaft and plain roller when the hammer is falling, and Fig. 5, represents a broken vertical section, taken in the line 1, y, in
Fig. 1, this view shows aportion of the: frame and one of the sliding boxes and.
springs for operating upon, or causing them to slide 1n, after the hammer has fallen.
periphery of the recessed rollers of difierent lengths; or rather making the first recess extend nearly one half the distance around the circumference of the recessed rollers, the second recess one third, and the third recess one quarter the distance around the same, according to the force of blow required. To accomplish this object effectually it is necessary for the recessed rollers to be movable so as to slide on their shaft back and forth; when the lever is raised or lowered.
To enable others skilled in the art to make and use our invention we will now proceed to describe more fully its construction and operation.
A, represents the frame which may be of the form represented, or of any. other more suitable.
B, B, are the horizontal shafts on which the lifting rollers C, C recessed and plain rollers D, D, D D are hung or secured. The shafts B, which we will suppose to be on the front part of the machine, has its journals secured and turning in stationary bearings or boxes a, a, of the frame A, and on the first shaft the lifting roller C, is secured, near its center, and also the two recessed rollers D, D. Secured on it, near its ends, these rollers all turn with the revolving shaft B. By examining the drawing Figs. 1, 2, and 3, the peculiar form of the rollers D, D, will be clearly seen, these rollers may each have one, two, three, or more recesses Z), c, d, out in their periphery, and that lettered b, may be double the length of that lettered (Z, and that lettered a, may be one third longer than that d; the object in making these recesses of different lengths around the periphery of the rollers, is that of regulating the blow of the hammer when it is desired to forge different kinds of work. It will be understood if it is desired to forge light work it is not necessary to change the position of the recessed rollers D as they are now in the position to give the j lightest blow, but if it is desired to forge Similar letters of reference indicate correv sponding parts in each of the several figures.
The nature of our invention consists 1st; In the employment of recessed rollers, which operate in combination with plain rollersf springs, and sliding boxes, etc., for controlling the operation of the lifting rollers. 2nd. In regulating the force or blow of? the hammer, by making the recesses in the,
heavy work and a very powerful blow of the hammer is required, it will be necessary for the operator to lay hold of the lever E, and pull or press it down to the position shown in dotted lines in Fig. 1; this will cause the shifting bar E, to which the lever is attached, to slide, horizontally, and assume the position shown by dotted lines in the same figure; thereby causing the recessed rollers D, D, Which are connected to this shifting bar E, by forks s, s, which fit around the collars p, p, of the said rollers in the manner represented in Figs. 1 and 2; to assume or occupy the position shown, in black dotted lines and to act in combination with the plain rollers D. When this has taken place the lever is secured under the stop or projections e, or i, and the machine is set in operation. The. other horizontal shaft B which is back of that B, has its journals secured and turning in movable bearings or boxes f, and has the lifting roller C secured on it, in line with that 0, and has, also, the plain rollers D secured on it, near its ends and directlyopposite the recessed rollers, in such a position that no matter what may be the position of the reso placed or arranged that they are made to bear on, or touch one end of the sliding or movable boxes in which the journals of the shaft B are secured. The object of these springs is that of forcing or pressing the shaft B, or boxes f, back to their proper position, as the hammer is being raised, and also allowing the shaft B, and boxes f, to be forced outward to the position shown in red lines in Fig. 5, so as to permit the hammer to fall to its position on the anvil at the proper time.
Z, m, n, 0, are rollers which serve to guide shaft I, of the hammer I, and also to diminish friction when the hammer is rising or falling.
Operation: We will suppose the hammer to be raised nearly the desired height, and that the recessed rollers, are about to assume the position shown in dotted lines in Fig. 4:; As soon as the recessed rollers have occupied the position just mentioned, the boxes 7, shaft B, lifting roller 0, and springs II, will occupy the position shown in red lines in Figs. 3, and 5; the projections of the recessed rollers having caused the lifting roller 0, and plain rollers D, D, to recede from the rollers on the shaft B, and consequently the hammer is allowed to fall. As soon as the hammer falls the springs H, expand and operate upon the shaft B, upon which the lifting roller C, and plain rollers D, D, are hung, and cause it to be thrown toward the shaft B, and also cause the lifting roller in connection with that O, to grip the handle I, of the hammer, and again raise it. As the hammer is being raised the power from the springs keep the rollers close together and cause them to grip the handle of the hammer more firmly.
The objects effected by the use of our hammer are these: 1st. This hammer can be constructed very cheap and at the same time be very durable. It is not liable to get out of order as it is very simple and compact and is very effectual in its operation. 2nd. Any degree of blow may be obtained by the use of our hammer, for by the simple manner of constructing, also regulating the position of the recessed rollers, any degree of blow required can be obtained in the shortest space of time and without much delay.
This machine may be either driven by hand or steam power, motion being communicated to the pulley K, which communicates mot-ion to the cog gearing L, L, arranged on the shafts B B.
We are aware that vertical trip hammers elevated by friction rollers are not new; neither are cams for regulating the elevation to which such hammers shall be lifted, and therefore we do not claim them, but
lVhatwe do claim as our invention and desire to secure by Letters Patent is,
1. The recessed rollers D, D, in combination with the plain rollers D, D, and
springs H, or their equivalents, for controlling the operation of the lifting rollers, the projections on the Y of said recessed rollers causing the shaft B, lifting roller 0, and plain rollers, D, D, to recede or move from the rollers on the shaft B, and thereby allow of the hammer fall, the whole being constructed and arranged and operating substantially as herein described.
2. The manner herein described of regulating the blow of the hammer by making the recesses b, 0, cl, in the periphery of the rollers D, D, ofunequal lengths, and making the said rollers movable on their shaft, so that either projection can be brought opposite to and made to act in combination with the plain rollers D, D, in the manner herein set forth.
. hi PETER sTEBBINs.
JOSEPH HENFALL, M. V. BOUCK.
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