US242569A

US242569A - Former for arch-bars of car-trucks

Info

Publication number: US242569A
Authority: US
Publication date: 1881-06-07
Anticipated expiration: 1898-06-07

Description

(No Model.)

J. STEVENSON. Former for Arch Bars of Car Trucks.

Patented June 7,1881,

N PETERS. Pholo-l-ilhognpher. Washington. DC.

' tained thereon and secured thereto.

Urrrrnn STATES PATENT Orrrca.

JOHN STEVENSON, OF DETROIT, MICHIGAN.

FORMER FOR ARCH-BARS OF CAR-TRUCKS.

SPECIFICATION forming part of Letters Patent No. 242,569, dated June 7, 1881.

Application filed February 17, 1881.

T 0 all whom it may concern Be it known that I, JOHN STEVENSON, of Detroit, in the county of WVayne and State of Michigan, have invented an improvement in Formers for Arch-Bars of Railway-Oar Trucks, of which the following is a specification.

The nature of my invention relates to certain new and useful improvements in that class of machines which are employed to give desired form to bars of iron which form the arch in trucks for railway-ears.

The invention consists'in making such machine so adjnstablethat bars ot'dift'erentlengths and thicknesses maybe bent into the form required and that varying angles and lengths of arch and bearings may be obtained in the same machine. In machines now employed but one rigid form can be had, and working parts corresponding to the various sizes and shapes must be changed for other similar partscorresponding to the various sizes and shapes required; hence my invention consists in so constructing a machine for thepurpose that it may be readily adjusted to meet the above-named requirements and avoid the necessity of eh anging any of the operating parts for other parts of different sizes or lengths, as more fully hereinafter set forth.

In the drawings, Figure 1 is a plan View, showing the bed and the operating parts sus- Fig. 2 is a vertical longitudinal section on the line 00 a: in Fig. 1. Fig. 3 is an edge view of an archbar as formed by my machine.

In the accompanying drawings, which form a part of this specification, there is shown in Fig. 3 an arch-bar of a railway-car truck, in which a to represent the bearing-ends, I) b the diagonal risers, and c the crown of the arch, the latter being parallel to the plane of the bearings a a.

A represents the bed of the machine. It is made of iron, and its upper surface is planed perfectly flat and even.

Midway between the ends of the bed is secured the jaw B, which is made in two overlapping parts, (I d, each part having a slot, 0, through which passes the bolt f. The two parts of the jaw may be made to slide one within the other, instead of overlapping, so that the length of the jaw may be increased or risers b b of the arch-bar.

(No model.)

diminished, the movement being limited by means of the slots and bolt.

0 O are two other jaws, hinged one at each end to the jaw B. These jaws G O are each provided with a slot, h, and a bolt, g, which also passes through a curved slot, 17, in the bed. By means of these bolts 9 thejaws B and O O are secured to the bed A in such a manner that when thejaw B is increased or diminished-in length, as already described, the jaws O C will retain their relative-positions to the jaw B, while the jaws C G will also have a radial movement, controlled by the bolts g and the slots I, in the bed, by which a greater or lesser obtuseness may be given to the angles of the diagonal Additional slots 41 2' allow the jaws to be extended farther than the inner slots, 43 '1 would allow.

At the intersection of the jaws B and U 0 there are removable steel plates 7;, which form the corners at such intersections. These plates are movable laterally, in order, it required, that the angles of the risers may be adjusted with the adjustability of the jaws, as already described. When properly adjusted they are locked in place by means of the keys or wedges l l, which fit into the recesses in the jaws within which the plates are placed, the outer faces of such plates being flush with the outer faces of the jaws within which they are placed.

D D are other jaws, one end of each being hinged or pivotally secured by the bolt m to the hitherto free ends of the jaws O 0, substantially as shown, a a representing the hinges. The free ends of these'jaws D D are provided with they are operated.

F is a jaw constructed in two parts in the same manner as jaw B is constructed, each part being provided with a coincident slot, 0, through which the bolt 1) passes, so that this jaw may be extended to the length required by the extension of the jaw B, opposite to which it is placed. This jaw F is compelled to advance toward or recede from the jaw B by means of the screw E and crank or hand wheel G.

By means of the hinges q and bolts 1" the jaws H H are hinged, one at each end, to the jaw F. These jaws H H are each made in two parts, which are provided with slots 8 and bolts levers E, by means of which I t, whereby they can be adjusted in length to correspond with the jaws (J C, and, not being fastened to the bed, are at perfect liberty to follow the movement of the jaw F when the latter is extended or diminished in length.

To the hitherto free end of each of the jaws H H are hinged the jaws I I, each of which is provided with a lever, J. At the intersecting ends of the jaws H H and I I are the steel plates to, similar to those already described and lettered k, and for a like purpose. These plates are secured in place by the keys or wedges '2), similar to the wedges or keys l.

KK are adjustable dogs pivoted to the bed A. In practice the machine is ready for use, as shown in Fig. 1. Thejaw F is withdrawn by means of the screw E until suflicient room is left between the jaws B and F to receive the blank bar, which, being heated, is laid upon its edge between the two jaws with one ofits ends resting against the step or gage L, which can be adjusted by any of the well-known means. The screw E is then turned to firmly clamp the blank bar between the jaws B F. and by means of the levers J J the jaws H H are then forced against the blank, pressing it against the jaws G G, the plates kk forming the upper corners of the arch. The dogs K K are then employed (as shown by dotted lines in the lower part of Fig. 1) to lock the jaws I and H in their positions, after which the levers E are employed to force the jaws D D toward the jaws I, thereby completing the formation of the risers b b and the bearin gs a a, the steel corner plates at a forming the lower corners at the base of the arch, adjustable dogs similar to K K, pivotally secured in the serrated slots M M, being employed to hold the jaws D D in place against any pressure from the opposite 40 jaws.

N N are bolts which are employed to secure the proper part of the hinges q to the jaws H H. The heads of these bolts project beyond the face of such jaws, as shown in Fig. 1, near the hinges, and being flat act upon the barblank, and prevent the faces of the jaws being worn by use, as would be the case if the jaws came in direct contact with the bar-blank at these points, and the bolts can be replaced at a small cost when the heads show signs of wear. The jaws D D are provided with similar bolts for the same purpose. The slots M are serrated, as shown, to allow the braces or dogs designed to be pivotal] y securedtherein to be adjusted to dog the jaws when in any position.

What I claim as my invention is 1. In a machine for the purpose set forth, the stationary jaw B, composed of two overlapping or interlocking parts, d d, with fastening devices, substantially as described, whereby the jaw can be extended or contracted in length, substantially as and for. the purposes specified.

2. In a machinefor the purpose set forth, the stationary jaw B, composed of two overlapping or interlocking parts, 01 (1, adapted to be ex tended or contracted, and having slots 0 and bolt f, by which their movement is limited and by which they are secured when adjusted, substantially as and for the purpose described.

3. In a machine for the purpose set forth and in combination with the jaw B, the jaws (J O, hinged or pivotally secured to the jaw B and provided with slots 2' and bolts 9, and adapted to follow the motion of said jaw when the same is extended or contracted in length, substantially as described.

4. In combination with thejaw B, constructed substantially as described, the jaws (J O, hinged or pivotally secured thereto and adapted to follow the motion of said jaw when the same is extended or contracted in length, and to have a radial movement on the bed A, both movements being limited by the slots h i and bolts g, substantially as and for the purpose specified.

5. In a machine for the purpose set forth and in combination with the adjustable jaws B and O O, the steel plates k k and keys or wedges ll, substantiallyas and for the purpose specified.

6. In a machine for the purpose set forth and in combination with thejaw B, consisting of two overlapping or interlocking parts, (I d, and adjustable in length, substantially as described, thejaws O U and D D, hinged orpivotally connected to said jaw B, substantially as and for the purpose specified.

7. In a machine for the purposes set forth and in combination with thejaws B and G 0, adjustable in length, as described, and limited in their motion by the slots 0 h and boltsfg, the hinged or pivoted jaws D D, substantial y as and for the purpose specified.

S. A machine for the purpose set forth, consisting of the jaws B F, adjustable in length and provided with slots and bolts, as described, to limit their motion, the jaws O O and H H, and thejaws D D and I I, all constructed, arranged, and operating substantially as specified, and for the purpose set forth.

9. In a machine for the purpose set forth, the adjustable plates k k, and keys I 1, adapted to allow the jaws to be placed at any desired angle and form hearings or corners at the adjacent ends of the jaws B and (J, substantially as and for the purpose described.

10. A machine for the purpose set forth, provided with jaws hinged together and made in overlappin ginterlockin g sections and provided with slots and bolts whereby they may be adjusted and secured to the various sizes desired, substantially as and for the purpose described. 11. In a machine for the purpose set forth, the bed-plateA, having curved slotsz'i, in combination with the jaw B, and slotted hinged jaws O G, and bolts 9, whereby the jaws G O can be adjusted radially and secured in position when adjusted, substantially as and for the purpose described.

JOHN STEVENSON. Witnesses:

WILLIAM H. SEXTON, GEORGE DIxoN.